[FL-2627] Flipper applications: SDK, build and debug system (#1387)

* Added support for running applications from SD card (FAPs - Flipper Application Packages)
* Added plugin_dist target for fbt to build FAPs
* All apps of type FlipperAppType.EXTERNAL and FlipperAppType.PLUGIN are built as FAPs by default
* Updated VSCode configuration for new fbt features - re-deploy stock configuration to use them
* Added debugging support for FAPs with fbt debug & VSCode
* Added public firmware API with automated versioning

Co-authored-by: hedger <hedger@users.noreply.github.com>
Co-authored-by: SG <who.just.the.doctor@gmail.com>
Co-authored-by: あく <alleteam@gmail.com>

applications/services/desktop/animations/animation_manager.c

@@ -0,0 +1,575 @@
+#include <gui/view_stack.h>
+#include <stdint.h>
+#include <furi.h>
+#include <furi_hal.h>
+#include <m-string.h>
+#include <portmacro.h>
+#include <dolphin/dolphin.h>
+#include <power/power_service/power.h>
+#include <storage/storage.h>
+#include <assets_icons.h>
+
+#include "views/bubble_animation_view.h"
+#include "views/one_shot_animation_view.h"
+#include "animation_storage.h"
+#include "animation_manager.h"
+
+#define TAG "AnimationManager"
+
+#define HARDCODED_ANIMATION_NAME "L1_Tv_128x47"
+#define NO_SD_ANIMATION_NAME "L1_NoSd_128x49"
+#define BAD_BATTERY_ANIMATION_NAME "L1_BadBattery_128x47"
+
+#define NO_DB_ANIMATION_NAME "L0_NoDb_128x51"
+#define BAD_SD_ANIMATION_NAME "L0_SdBad_128x51"
+#define SD_OK_ANIMATION_NAME "L0_SdOk_128x51"
+#define URL_ANIMATION_NAME "L0_Url_128x51"
+#define NEW_MAIL_ANIMATION_NAME "L0_NewMail_128x51"
+
+typedef enum {
+    AnimationManagerStateIdle,
+    AnimationManagerStateBlocked,
+    AnimationManagerStateFreezedIdle,
+    AnimationManagerStateFreezedBlocked,
+} AnimationManagerState;
+
+struct AnimationManager {
+    bool sd_show_url;
+    bool sd_shown_no_db;
+    bool sd_shown_sd_ok;
+    bool levelup_pending;
+    bool levelup_active;
+    AnimationManagerState state;
+    FuriPubSubSubscription* pubsub_subscription_storage;
+    FuriPubSubSubscription* pubsub_subscription_dolphin;
+    BubbleAnimationView* animation_view;
+    OneShotView* one_shot_view;
+    FuriTimer* idle_animation_timer;
+    StorageAnimation* current_animation;
+    AnimationManagerInteractCallback interact_callback;
+    AnimationManagerSetNewIdleAnimationCallback new_idle_callback;
+    AnimationManagerSetNewIdleAnimationCallback check_blocking_callback;
+    void* context;
+    string_t freezed_animation_name;
+    int32_t freezed_animation_time_left;
+    ViewStack* view_stack;
+};
+
+static StorageAnimation*
+    animation_manager_select_idle_animation(AnimationManager* animation_manager);
+static void animation_manager_replace_current_animation(
+    AnimationManager* animation_manager,
+    StorageAnimation* storage_animation);
+static void animation_manager_start_new_idle(AnimationManager* animation_manager);
+static bool animation_manager_check_blocking(AnimationManager* animation_manager);
+static bool animation_manager_is_valid_idle_animation(
+    const StorageAnimationManifestInfo* info,
+    const DolphinStats* stats);
+static void animation_manager_switch_to_one_shot_view(AnimationManager* animation_manager);
+static void animation_manager_switch_to_animation_view(AnimationManager* animation_manager);
+
+void animation_manager_set_context(AnimationManager* animation_manager, void* context) {
+    furi_assert(animation_manager);
+    animation_manager->context = context;
+}
+
+void animation_manager_set_new_idle_callback(
+    AnimationManager* animation_manager,
+    AnimationManagerSetNewIdleAnimationCallback callback) {
+    furi_assert(animation_manager);
+    animation_manager->new_idle_callback = callback;
+}
+
+void animation_manager_set_check_callback(
+    AnimationManager* animation_manager,
+    AnimationManagerCheckBlockingCallback callback) {
+    furi_assert(animation_manager);
+    animation_manager->check_blocking_callback = callback;
+}
+
+void animation_manager_set_interact_callback(
+    AnimationManager* animation_manager,
+    AnimationManagerInteractCallback callback) {
+    furi_assert(animation_manager);
+    animation_manager->interact_callback = callback;
+}
+
+static void animation_manager_check_blocking_callback(const void* message, void* context) {
+    const StorageEvent* storage_event = message;
+
+    switch(storage_event->type) {
+    case StorageEventTypeCardMount:
+    case StorageEventTypeCardUnmount:
+    case StorageEventTypeCardMountError:
+        furi_assert(context);
+        AnimationManager* animation_manager = context;
+        if(animation_manager->check_blocking_callback) {
+            animation_manager->check_blocking_callback(animation_manager->context);
+        }
+        break;
+
+    default:
+        break;
+    }
+}
+
+static void animation_manager_timer_callback(void* context) {
+    furi_assert(context);
+    AnimationManager* animation_manager = context;
+    if(animation_manager->new_idle_callback) {
+        animation_manager->new_idle_callback(animation_manager->context);
+    }
+}
+
+static void animation_manager_interact_callback(void* context) {
+    furi_assert(context);
+    AnimationManager* animation_manager = context;
+    if(animation_manager->interact_callback) {
+        animation_manager->interact_callback(animation_manager->context);
+    }
+}
+
+/* reaction to animation_manager->check_blocking_callback() */
+void animation_manager_check_blocking_process(AnimationManager* animation_manager) {
+    furi_assert(animation_manager);
+
+    if(animation_manager->state == AnimationManagerStateIdle) {
+        bool blocked = animation_manager_check_blocking(animation_manager);
+
+        if(!blocked) {
+            Dolphin* dolphin = furi_record_open(RECORD_DOLPHIN);
+            DolphinStats stats = dolphin_stats(dolphin);
+            furi_record_close(RECORD_DOLPHIN);
+
+            const StorageAnimationManifestInfo* manifest_info =
+                animation_storage_get_meta(animation_manager->current_animation);
+            bool valid = animation_manager_is_valid_idle_animation(manifest_info, &stats);
+
+            if(!valid) {
+                animation_manager_start_new_idle(animation_manager);
+            }
+        }
+    }
+}
+
+/* reaction to animation_manager->new_idle_callback() */
+void animation_manager_new_idle_process(AnimationManager* animation_manager) {
+    furi_assert(animation_manager);
+
+    if(animation_manager->state == AnimationManagerStateIdle) {
+        animation_manager_start_new_idle(animation_manager);
+    }
+}
+
+/* reaction to animation_manager->interact_callback() */
+bool animation_manager_interact_process(AnimationManager* animation_manager) {
+    furi_assert(animation_manager);
+    bool consumed = true;
+
+    if(animation_manager->levelup_pending) {
+        animation_manager->levelup_pending = false;
+        animation_manager->levelup_active = true;
+        animation_manager_switch_to_one_shot_view(animation_manager);
+        Dolphin* dolphin = furi_record_open(RECORD_DOLPHIN);
+        dolphin_upgrade_level(dolphin);
+        furi_record_close(RECORD_DOLPHIN);
+    } else if(animation_manager->levelup_active) {
+        animation_manager->levelup_active = false;
+        animation_manager_start_new_idle(animation_manager);
+        animation_manager_switch_to_animation_view(animation_manager);
+    } else if(animation_manager->state == AnimationManagerStateBlocked) {
+        bool blocked = animation_manager_check_blocking(animation_manager);
+
+        if(!blocked) {
+            animation_manager_start_new_idle(animation_manager);
+        }
+    } else {
+        consumed = false;
+    }
+
+    return consumed;
+}
+
+static void animation_manager_start_new_idle(AnimationManager* animation_manager) {
+    furi_assert(animation_manager);
+
+    StorageAnimation* new_animation = animation_manager_select_idle_animation(animation_manager);
+    animation_manager_replace_current_animation(animation_manager, new_animation);
+    const BubbleAnimation* bubble_animation =
+        animation_storage_get_bubble_animation(animation_manager->current_animation);
+    animation_manager->state = AnimationManagerStateIdle;
+    furi_timer_start(animation_manager->idle_animation_timer, bubble_animation->duration * 1000);
+}
+
+static bool animation_manager_check_blocking(AnimationManager* animation_manager) {
+    furi_assert(animation_manager);
+
+    StorageAnimation* blocking_animation = NULL;
+    Storage* storage = furi_record_open(RECORD_STORAGE);
+    FS_Error sd_status = storage_sd_status(storage);
+
+    if(sd_status == FSE_INTERNAL) {
+        blocking_animation = animation_storage_find_animation(BAD_SD_ANIMATION_NAME);
+        furi_assert(blocking_animation);
+    } else if(sd_status == FSE_NOT_READY) {
+        animation_manager->sd_shown_sd_ok = false;
+        animation_manager->sd_shown_no_db = false;
+    } else if(sd_status == FSE_OK) {
+        if(!animation_manager->sd_shown_sd_ok) {
+            blocking_animation = animation_storage_find_animation(SD_OK_ANIMATION_NAME);
+            furi_assert(blocking_animation);
+            animation_manager->sd_shown_sd_ok = true;
+        } else if(!animation_manager->sd_shown_no_db) {
+            if(!storage_file_exists(storage, EXT_PATH("Manifest"))) {
+                blocking_animation = animation_storage_find_animation(NO_DB_ANIMATION_NAME);
+                furi_assert(blocking_animation);
+                animation_manager->sd_shown_no_db = true;
+                animation_manager->sd_show_url = true;
+            }
+        } else if(animation_manager->sd_show_url) {
+            blocking_animation = animation_storage_find_animation(URL_ANIMATION_NAME);
+            furi_assert(blocking_animation);
+            animation_manager->sd_show_url = false;
+        }
+    }
+
+    Dolphin* dolphin = furi_record_open(RECORD_DOLPHIN);
+    DolphinStats stats = dolphin_stats(dolphin);
+    furi_record_close(RECORD_DOLPHIN);
+    if(!blocking_animation && stats.level_up_is_pending) {
+        blocking_animation = animation_storage_find_animation(NEW_MAIL_ANIMATION_NAME);
+        furi_assert(blocking_animation);
+        if(blocking_animation) {
+            animation_manager->levelup_pending = true;
+        }
+    }
+
+    if(blocking_animation) {
+        furi_timer_stop(animation_manager->idle_animation_timer);
+        animation_manager_replace_current_animation(animation_manager, blocking_animation);
+        /* no timer starting because this is blocking animation */
+        animation_manager->state = AnimationManagerStateBlocked;
+    }
+
+    furi_record_close(RECORD_STORAGE);
+
+    return !!blocking_animation;
+}
+
+static void animation_manager_replace_current_animation(
+    AnimationManager* animation_manager,
+    StorageAnimation* storage_animation) {
+    furi_assert(storage_animation);
+    StorageAnimation* previous_animation = animation_manager->current_animation;
+
+    const BubbleAnimation* animation = animation_storage_get_bubble_animation(storage_animation);
+    bubble_animation_view_set_animation(animation_manager->animation_view, animation);
+    const char* new_name = animation_storage_get_meta(storage_animation)->name;
+    FURI_LOG_I(TAG, "Select \'%s\' animation", new_name);
+    animation_manager->current_animation = storage_animation;
+
+    if(previous_animation) {
+        animation_storage_free_storage_animation(&previous_animation);
+    }
+}
+
+AnimationManager* animation_manager_alloc(void) {
+    AnimationManager* animation_manager = malloc(sizeof(AnimationManager));
+    animation_manager->animation_view = bubble_animation_view_alloc();
+    animation_manager->view_stack = view_stack_alloc();
+    View* animation_view = bubble_animation_get_view(animation_manager->animation_view);
+    view_stack_add_view(animation_manager->view_stack, animation_view);
+    string_init(animation_manager->freezed_animation_name);
+
+    animation_manager->idle_animation_timer =
+        furi_timer_alloc(animation_manager_timer_callback, FuriTimerTypeOnce, animation_manager);
+    bubble_animation_view_set_interact_callback(
+        animation_manager->animation_view, animation_manager_interact_callback, animation_manager);
+
+    Storage* storage = furi_record_open(RECORD_STORAGE);
+    animation_manager->pubsub_subscription_storage = furi_pubsub_subscribe(
+        storage_get_pubsub(storage), animation_manager_check_blocking_callback, animation_manager);
+    furi_record_close(RECORD_STORAGE);
+
+    Dolphin* dolphin = furi_record_open(RECORD_DOLPHIN);
+    animation_manager->pubsub_subscription_dolphin = furi_pubsub_subscribe(
+        dolphin_get_pubsub(dolphin), animation_manager_check_blocking_callback, animation_manager);
+    furi_record_close(RECORD_DOLPHIN);
+
+    animation_manager->sd_shown_sd_ok = true;
+    if(!animation_manager_check_blocking(animation_manager)) {
+        animation_manager_start_new_idle(animation_manager);
+    }
+
+    return animation_manager;
+}
+
+void animation_manager_free(AnimationManager* animation_manager) {
+    furi_assert(animation_manager);
+
+    Dolphin* dolphin = furi_record_open(RECORD_DOLPHIN);
+    furi_pubsub_unsubscribe(
+        dolphin_get_pubsub(dolphin), animation_manager->pubsub_subscription_dolphin);
+    furi_record_close(RECORD_DOLPHIN);
+
+    Storage* storage = furi_record_open(RECORD_STORAGE);
+    furi_pubsub_unsubscribe(
+        storage_get_pubsub(storage), animation_manager->pubsub_subscription_storage);
+    furi_record_close(RECORD_STORAGE);
+
+    string_clear(animation_manager->freezed_animation_name);
+    View* animation_view = bubble_animation_get_view(animation_manager->animation_view);
+    view_stack_remove_view(animation_manager->view_stack, animation_view);
+    bubble_animation_view_free(animation_manager->animation_view);
+    furi_timer_free(animation_manager->idle_animation_timer);
+}
+
+View* animation_manager_get_animation_view(AnimationManager* animation_manager) {
+    furi_assert(animation_manager);
+
+    return view_stack_get_view(animation_manager->view_stack);
+}
+
+static bool animation_manager_is_valid_idle_animation(
+    const StorageAnimationManifestInfo* info,
+    const DolphinStats* stats) {
+    furi_assert(info);
+    furi_assert(info->name);
+
+    bool result = true;
+
+    if(!strcmp(info->name, BAD_BATTERY_ANIMATION_NAME)) {
+        Power* power = furi_record_open(RECORD_POWER);
+        bool battery_is_well = power_is_battery_healthy(power);
+        furi_record_close(RECORD_POWER);
+
+        result = !battery_is_well;
+    }
+    if(!strcmp(info->name, NO_SD_ANIMATION_NAME)) {
+        Storage* storage = furi_record_open(RECORD_STORAGE);
+        FS_Error sd_status = storage_sd_status(storage);
+        furi_record_close(RECORD_STORAGE);
+
+        result = (sd_status == FSE_NOT_READY);
+    }
+    if((stats->butthurt < info->min_butthurt) || (stats->butthurt > info->max_butthurt)) {
+        result = false;
+    }
+    if((stats->level < info->min_level) || (stats->level > info->max_level)) {
+        result = false;
+    }
+
+    return result;
+}
+
+static StorageAnimation*
+    animation_manager_select_idle_animation(AnimationManager* animation_manager) {
+    UNUSED(animation_manager);
+    StorageAnimationList_t animation_list;
+    StorageAnimationList_init(animation_list);
+    animation_storage_fill_animation_list(&animation_list);
+
+    Dolphin* dolphin = furi_record_open(RECORD_DOLPHIN);
+    DolphinStats stats = dolphin_stats(dolphin);
+    furi_record_close(RECORD_DOLPHIN);
+    uint32_t whole_weight = 0;
+
+    StorageAnimationList_it_t it;
+    for(StorageAnimationList_it(it, animation_list); !StorageAnimationList_end_p(it);) {
+        StorageAnimation* storage_animation = *StorageAnimationList_ref(it);
+        const StorageAnimationManifestInfo* manifest_info =
+            animation_storage_get_meta(storage_animation);
+        bool valid = animation_manager_is_valid_idle_animation(manifest_info, &stats);
+
+        if(valid) {
+            whole_weight += manifest_info->weight;
+            StorageAnimationList_next(it);
+        } else {
+            animation_storage_free_storage_animation(&storage_animation);
+            /* remove and increase iterator */
+            StorageAnimationList_remove(animation_list, it);
+        }
+    }
+
+    uint32_t lucky_number = furi_hal_random_get() % whole_weight;
+    uint32_t weight = 0;
+
+    StorageAnimation* selected = NULL;
+    for
+        M_EACH(item, animation_list, StorageAnimationList_t) {
+            if(lucky_number < weight) {
+                break;
+            }
+            weight += animation_storage_get_meta(*item)->weight;
+            selected = *item;
+        }
+
+    for
+        M_EACH(item, animation_list, StorageAnimationList_t) {
+            if(*item != selected) {
+                animation_storage_free_storage_animation(item);
+            }
+        }
+
+    StorageAnimationList_clear(animation_list);
+
+    /* cache animation, if failed - choose reliable animation */
+    if(!animation_storage_get_bubble_animation(selected)) {
+        const char* name = animation_storage_get_meta(selected)->name;
+        FURI_LOG_E(TAG, "Can't upload animation described in manifest: \'%s\'", name);
+        animation_storage_free_storage_animation(&selected);
+        selected = animation_storage_find_animation(HARDCODED_ANIMATION_NAME);
+    }
+
+    furi_assert(selected);
+    return selected;
+}
+
+bool animation_manager_is_animation_loaded(AnimationManager* animation_manager) {
+    furi_assert(animation_manager);
+    return animation_manager->current_animation;
+}
+
+void animation_manager_unload_and_stall_animation(AnimationManager* animation_manager) {
+    furi_assert(animation_manager);
+    furi_assert(animation_manager->current_animation);
+    furi_assert(!string_size(animation_manager->freezed_animation_name));
+    furi_assert(
+        (animation_manager->state == AnimationManagerStateIdle) ||
+        (animation_manager->state == AnimationManagerStateBlocked));
+
+    if(animation_manager->state == AnimationManagerStateBlocked) {
+        animation_manager->state = AnimationManagerStateFreezedBlocked;
+    } else if(animation_manager->state == AnimationManagerStateIdle) {
+        animation_manager->state = AnimationManagerStateFreezedIdle;
+
+        animation_manager->freezed_animation_time_left =
+            xTimerGetExpiryTime(animation_manager->idle_animation_timer) - xTaskGetTickCount();
+        if(animation_manager->freezed_animation_time_left < 0) {
+            animation_manager->freezed_animation_time_left = 0;
+        }
+        furi_timer_stop(animation_manager->idle_animation_timer);
+    } else {
+        furi_assert(0);
+    }
+
+    FURI_LOG_I(
+        TAG,
+        "Unload animation \'%s\'",
+        animation_storage_get_meta(animation_manager->current_animation)->name);
+
+    StorageAnimationManifestInfo* meta =
+        animation_storage_get_meta(animation_manager->current_animation);
+    /* copy str, not move, because it can be internal animation */
+    string_set_str(animation_manager->freezed_animation_name, meta->name);
+
+    bubble_animation_freeze(animation_manager->animation_view);
+    animation_storage_free_storage_animation(&animation_manager->current_animation);
+}
+
+void animation_manager_load_and_continue_animation(AnimationManager* animation_manager) {
+    furi_assert(animation_manager);
+    furi_assert(!animation_manager->current_animation);
+    furi_assert(string_size(animation_manager->freezed_animation_name));
+    furi_assert(
+        (animation_manager->state == AnimationManagerStateFreezedIdle) ||
+        (animation_manager->state == AnimationManagerStateFreezedBlocked));
+
+    if(animation_manager->state == AnimationManagerStateFreezedBlocked) {
+        StorageAnimation* restore_animation = animation_storage_find_animation(
+            string_get_cstr(animation_manager->freezed_animation_name));
+        /* all blocked animations must be in flipper -> we can
+         * always find blocking animation */
+        furi_assert(restore_animation);
+        animation_manager_replace_current_animation(animation_manager, restore_animation);
+        animation_manager->state = AnimationManagerStateBlocked;
+    } else if(animation_manager->state == AnimationManagerStateFreezedIdle) {
+        /* check if we missed some system notifications, and set current_animation */
+        bool blocked = animation_manager_check_blocking(animation_manager);
+        if(!blocked) {
+            /* if no blocking - try restore last one idle */
+            StorageAnimation* restore_animation = animation_storage_find_animation(
+                string_get_cstr(animation_manager->freezed_animation_name));
+            if(restore_animation) {
+                Dolphin* dolphin = furi_record_open(RECORD_DOLPHIN);
+                DolphinStats stats = dolphin_stats(dolphin);
+                furi_record_close(RECORD_DOLPHIN);
+                const StorageAnimationManifestInfo* manifest_info =
+                    animation_storage_get_meta(restore_animation);
+                bool valid = animation_manager_is_valid_idle_animation(manifest_info, &stats);
+                if(valid) {
+                    animation_manager_replace_current_animation(
+                        animation_manager, restore_animation);
+                    animation_manager->state = AnimationManagerStateIdle;
+
+                    if(animation_manager->freezed_animation_time_left) {
+                        furi_timer_start(
+                            animation_manager->idle_animation_timer,
+                            animation_manager->freezed_animation_time_left);
+                    } else {
+                        const BubbleAnimation* animation = animation_storage_get_bubble_animation(
+                            animation_manager->current_animation);
+                        furi_timer_start(
+                            animation_manager->idle_animation_timer, animation->duration * 1000);
+                    }
+                }
+            } else {
+                FURI_LOG_E(
+                    TAG,
+                    "Failed to restore \'%s\'",
+                    string_get_cstr(animation_manager->freezed_animation_name));
+            }
+        }
+    } else {
+        /* Unknown state is an error. But not in release version.*/
+        furi_assert(0);
+    }
+
+    /* if can't restore previous animation - select new */
+    if(!animation_manager->current_animation) {
+        animation_manager_start_new_idle(animation_manager);
+    }
+    FURI_LOG_I(
+        TAG,
+        "Load animation \'%s\'",
+        animation_storage_get_meta(animation_manager->current_animation)->name);
+
+    bubble_animation_unfreeze(animation_manager->animation_view);
+    string_reset(animation_manager->freezed_animation_name);
+    furi_assert(animation_manager->current_animation);
+}
+
+static void animation_manager_switch_to_one_shot_view(AnimationManager* animation_manager) {
+    furi_assert(animation_manager);
+    furi_assert(!animation_manager->one_shot_view);
+    Dolphin* dolphin = furi_record_open(RECORD_DOLPHIN);
+    DolphinStats stats = dolphin_stats(dolphin);
+    furi_record_close(RECORD_DOLPHIN);
+
+    animation_manager->one_shot_view = one_shot_view_alloc();
+    one_shot_view_set_interact_callback(
+        animation_manager->one_shot_view, animation_manager_interact_callback, animation_manager);
+    View* prev_view = bubble_animation_get_view(animation_manager->animation_view);
+    View* next_view = one_shot_view_get_view(animation_manager->one_shot_view);
+    view_stack_remove_view(animation_manager->view_stack, prev_view);
+    view_stack_add_view(animation_manager->view_stack, next_view);
+    if(stats.level == 1) {
+        one_shot_view_start_animation(animation_manager->one_shot_view, &A_Levelup1_128x64);
+    } else if(stats.level == 2) {
+        one_shot_view_start_animation(animation_manager->one_shot_view, &A_Levelup2_128x64);
+    } else {
+        furi_assert(0);
+    }
+}
+
+static void animation_manager_switch_to_animation_view(AnimationManager* animation_manager) {
+    furi_assert(animation_manager);
+    furi_assert(animation_manager->one_shot_view);
+
+    View* prev_view = one_shot_view_get_view(animation_manager->one_shot_view);
+    View* next_view = bubble_animation_get_view(animation_manager->animation_view);
+    view_stack_remove_view(animation_manager->view_stack, prev_view);
+    view_stack_add_view(animation_manager->view_stack, next_view);
+    one_shot_view_free(animation_manager->one_shot_view);
+    animation_manager->one_shot_view = NULL;
+}

applications/services/desktop/animations/animation_manager.h

@@ -0,0 +1,159 @@
+#pragma once
+
+#include <gui/view.h>
+#include <gui/icon_i.h>
+#include <stdint.h>
+#include <dolphin/dolphin.h>
+
+typedef struct AnimationManager AnimationManager;
+
+typedef struct {
+    uint8_t x;
+    uint8_t y;
+    const char* text;
+    Align align_h;
+    Align align_v;
+} Bubble;
+
+typedef struct FrameBubble {
+    Bubble bubble;
+    uint8_t start_frame;
+    uint8_t end_frame;
+    const struct FrameBubble* next_bubble;
+} FrameBubble;
+
+typedef struct {
+    const FrameBubble* const* frame_bubble_sequences;
+    uint8_t frame_bubble_sequences_count;
+    const Icon icon_animation;
+    const uint8_t* frame_order;
+    uint8_t passive_frames;
+    uint8_t active_frames;
+    uint8_t active_cycles;
+    uint16_t duration;
+    uint16_t active_cooldown;
+} BubbleAnimation;
+
+typedef void (*AnimationManagerSetNewIdleAnimationCallback)(void* context);
+typedef void (*AnimationManagerCheckBlockingCallback)(void* context);
+typedef void (*AnimationManagerInteractCallback)(void*);
+
+/**
+ * Allocate Animation Manager
+ *
+ * @return animation manager instance
+ */
+AnimationManager* animation_manager_alloc(void);
+
+/**
+ * Free Animation Manager
+ *
+ * @animation_manager   instance
+ */
+void animation_manager_free(AnimationManager* animation_manager);
+
+/**
+ * Get View of Animation Manager
+ *
+ * @animation_manager   instance
+ * @return      view
+ */
+View* animation_manager_get_animation_view(AnimationManager* animation_manager);
+
+/**
+ * Set context for all callbacks for Animation Manager
+ *
+ * @animation_manager   instance
+ * @context             context
+ */
+void animation_manager_set_context(AnimationManager* animation_manager, void* context);
+
+/**
+ * Set callback for Animation Manager for defered calls
+ * for animation_manager_new_idle_process().
+ * Animation Manager doesn't have it's own thread, so main thread gives
+ * callbacks to A.M. to call when it should perform some inner manipulations.
+ * This callback is called from other threads and should notify main thread
+ * when to call animation_manager_new_idle_process().
+ * So scheme is this:
+ * A.M. sets callbacks,
+ * callbacks notifies main thread
+ * main thread in its own context calls appropriate *_process() function.
+ *
+ * @animation_manager   instance
+ * @callback            callback
+ */
+void animation_manager_set_new_idle_callback(
+    AnimationManager* animation_manager,
+    AnimationManagerSetNewIdleAnimationCallback callback);
+
+/**
+ * Function to call in main thread as a response to
+ * set_new_idle_callback's call.
+ *
+ * @animation_manager   instance
+ */
+void animation_manager_new_idle_process(AnimationManager* animation_manager);
+
+/**
+ * Set callback for Animation Manager for defered calls
+ * for animation_manager_check_blocking_process().
+ *
+ * @animation_manager   instance
+ * @callback            callback
+ */
+void animation_manager_set_check_callback(
+    AnimationManager* animation_manager,
+    AnimationManagerCheckBlockingCallback callback);
+
+/**
+ * Function to call in main thread as a response to
+ * set_new_idle_callback's call.
+ *
+ * @animation_manager   instance
+ */
+void animation_manager_check_blocking_process(AnimationManager* animation_manager);
+
+/**
+ * Set callback for Animation Manager for defered calls
+ * for animation_manager_interact_process().
+ *
+ * @animation_manager   instance
+ * @callback            callback
+ */
+void animation_manager_set_interact_callback(
+    AnimationManager* animation_manager,
+    AnimationManagerInteractCallback callback);
+
+/**
+ * Function to call in main thread as a response to
+ * set_new_idle_callback's call.
+ *
+ * @animation_manager   instance
+ * @return              true if event was consumed
+ */
+bool animation_manager_interact_process(AnimationManager* animation_manager);
+
+/** Check if animation loaded
+ *
+ * @animation_manager   instance
+ */
+bool animation_manager_is_animation_loaded(AnimationManager* animation_manager);
+
+/**
+ * Unload and Stall animation actions. Draw callback in view
+ * paints first frame of current animation until
+ * animation_manager_load_and_continue_animation() is called.
+ * Can't be called multiple times. Every Stall has to be finished
+ * with Continue.
+ *
+ * @animation_manager   instance
+ */
+void animation_manager_unload_and_stall_animation(AnimationManager* animation_manager);
+
+/**
+ * Load and Contunue execution of animation manager.
+ *
+ * @animation_manager   instance
+ */
+void animation_manager_load_and_continue_animation(AnimationManager* animation_manager);

applications/services/desktop/animations/animation_storage.c

@@ -0,0 +1,535 @@
+
+#include <stdint.h>
+#include <flipper_format/flipper_format.h>
+#include <furi.h>
+#include <core/dangerous_defines.h>
+#include <storage/storage.h>
+#include <gui/icon_i.h>
+#include <m-string.h>
+
+#include "animation_manager.h"
+#include "animation_storage.h"
+#include "animation_storage_i.h"
+#include <assets_dolphin_internal.h>
+#include <assets_dolphin_blocking.h>
+
+#define ANIMATION_META_FILE "meta.txt"
+#define ANIMATION_DIR EXT_PATH("dolphin")
+#define ANIMATION_MANIFEST_FILE ANIMATION_DIR "/manifest.txt"
+#define TAG "AnimationStorage"
+
+static void animation_storage_free_bubbles(BubbleAnimation* animation);
+static void animation_storage_free_frames(BubbleAnimation* animation);
+static void animation_storage_free_animation(BubbleAnimation** storage_animation);
+static BubbleAnimation* animation_storage_load_animation(const char* name);
+
+static bool animation_storage_load_single_manifest_info(
+    StorageAnimationManifestInfo* manifest_info,
+    const char* name) {
+    furi_assert(manifest_info);
+
+    bool result = false;
+    Storage* storage = furi_record_open(RECORD_STORAGE);
+    FlipperFormat* file = flipper_format_file_alloc(storage);
+    flipper_format_set_strict_mode(file, true);
+    string_t read_string;
+    string_init(read_string);
+
+    do {
+        uint32_t u32value;
+        if(FSE_OK != storage_sd_status(storage)) break;
+        if(!flipper_format_file_open_existing(file, ANIMATION_MANIFEST_FILE)) break;
+
+        if(!flipper_format_read_header(file, read_string, &u32value)) break;
+        if(string_cmp_str(read_string, "Flipper Animation Manifest")) break;
+
+        manifest_info->name = NULL;
+
+        /* skip other animation names */
+        flipper_format_set_strict_mode(file, false);
+        while(flipper_format_read_string(file, "Name", read_string) &&
+              string_cmp_str(read_string, name))
+            ;
+        if(string_cmp_str(read_string, name)) break;
+        flipper_format_set_strict_mode(file, true);
+
+        manifest_info->name = malloc(string_size(read_string) + 1);
+        strcpy((char*)manifest_info->name, string_get_cstr(read_string));
+
+        if(!flipper_format_read_uint32(file, "Min butthurt", &u32value, 1)) break;
+        manifest_info->min_butthurt = u32value;
+        if(!flipper_format_read_uint32(file, "Max butthurt", &u32value, 1)) break;
+        manifest_info->max_butthurt = u32value;
+        if(!flipper_format_read_uint32(file, "Min level", &u32value, 1)) break;
+        manifest_info->min_level = u32value;
+        if(!flipper_format_read_uint32(file, "Max level", &u32value, 1)) break;
+        manifest_info->max_level = u32value;
+        if(!flipper_format_read_uint32(file, "Weight", &u32value, 1)) break;
+        manifest_info->weight = u32value;
+        result = true;
+    } while(0);
+
+    if(!result && manifest_info->name) {
+        free((void*)manifest_info->name);
+    }
+    string_clear(read_string);
+    flipper_format_free(file);
+
+    furi_record_close(RECORD_STORAGE);
+
+    return result;
+}
+
+void animation_storage_fill_animation_list(StorageAnimationList_t* animation_list) {
+    furi_assert(sizeof(StorageAnimationList_t) == sizeof(void*));
+    furi_assert(!StorageAnimationList_size(*animation_list));
+
+    Storage* storage = furi_record_open(RECORD_STORAGE);
+    FlipperFormat* file = flipper_format_file_alloc(storage);
+    /* Forbid skipping fields */
+    flipper_format_set_strict_mode(file, true);
+    string_t read_string;
+    string_init(read_string);
+
+    do {
+        uint32_t u32value;
+        StorageAnimation* storage_animation = NULL;
+
+        if(FSE_OK != storage_sd_status(storage)) break;
+        if(!flipper_format_file_open_existing(file, ANIMATION_MANIFEST_FILE)) break;
+        if(!flipper_format_read_header(file, read_string, &u32value)) break;
+        if(string_cmp_str(read_string, "Flipper Animation Manifest")) break;
+        do {
+            storage_animation = malloc(sizeof(StorageAnimation));
+            storage_animation->external = true;
+            storage_animation->animation = NULL;
+            storage_animation->manifest_info.name = NULL;
+
+            if(!flipper_format_read_string(file, "Name", read_string)) break;
+            storage_animation->manifest_info.name = malloc(string_size(read_string) + 1);
+            strcpy((char*)storage_animation->manifest_info.name, string_get_cstr(read_string));
+
+            if(!flipper_format_read_uint32(file, "Min butthurt", &u32value, 1)) break;
+            storage_animation->manifest_info.min_butthurt = u32value;
+            if(!flipper_format_read_uint32(file, "Max butthurt", &u32value, 1)) break;
+            storage_animation->manifest_info.max_butthurt = u32value;
+            if(!flipper_format_read_uint32(file, "Min level", &u32value, 1)) break;
+            storage_animation->manifest_info.min_level = u32value;
+            if(!flipper_format_read_uint32(file, "Max level", &u32value, 1)) break;
+            storage_animation->manifest_info.max_level = u32value;
+            if(!flipper_format_read_uint32(file, "Weight", &u32value, 1)) break;
+            storage_animation->manifest_info.weight = u32value;
+
+            StorageAnimationList_push_back(*animation_list, storage_animation);
+        } while(1);
+
+        animation_storage_free_storage_animation(&storage_animation);
+    } while(0);
+
+    string_clear(read_string);
+    flipper_format_free(file);
+
+    // add hard-coded animations
+    for(size_t i = 0; i < dolphin_internal_size; ++i) {
+        StorageAnimationList_push_back(*animation_list, (StorageAnimation*)&dolphin_internal[i]);
+    }
+
+    furi_record_close(RECORD_STORAGE);
+}
+
+StorageAnimation* animation_storage_find_animation(const char* name) {
+    furi_assert(name);
+    furi_assert(strlen(name));
+    StorageAnimation* storage_animation = NULL;
+
+    for(size_t i = 0; i < dolphin_blocking_size; ++i) {
+        if(!strcmp(dolphin_blocking[i].manifest_info.name, name)) {
+            storage_animation = (StorageAnimation*)&dolphin_blocking[i];
+            break;
+        }
+    }
+
+    if(!storage_animation) {
+        for(size_t i = 0; i < dolphin_internal_size; ++i) {
+            if(!strcmp(dolphin_internal[i].manifest_info.name, name)) {
+                storage_animation = (StorageAnimation*)&dolphin_internal[i];
+                break;
+            }
+        }
+    }
+
+    /* look through external animations */
+    if(!storage_animation) {
+        storage_animation = malloc(sizeof(StorageAnimation));
+        storage_animation->external = true;
+
+        bool result = false;
+        result =
+            animation_storage_load_single_manifest_info(&storage_animation->manifest_info, name);
+        if(result) {
+            storage_animation->animation = animation_storage_load_animation(name);
+            result = !!storage_animation->animation;
+        }
+        if(!result) {
+            animation_storage_free_storage_animation(&storage_animation);
+        }
+    }
+
+    return storage_animation;
+}
+
+StorageAnimationManifestInfo* animation_storage_get_meta(StorageAnimation* storage_animation) {
+    furi_assert(storage_animation);
+    return &storage_animation->manifest_info;
+}
+
+const BubbleAnimation*
+    animation_storage_get_bubble_animation(StorageAnimation* storage_animation) {
+    furi_assert(storage_animation);
+    animation_storage_cache_animation(storage_animation);
+    return storage_animation->animation;
+}
+
+void animation_storage_cache_animation(StorageAnimation* storage_animation) {
+    furi_assert(storage_animation);
+
+    if(storage_animation->external) {
+        if(!storage_animation->animation) {
+            storage_animation->animation =
+                animation_storage_load_animation(storage_animation->manifest_info.name);
+        }
+    }
+}
+
+static void animation_storage_free_animation(BubbleAnimation** animation) {
+    furi_assert(animation);
+
+    if(*animation) {
+        animation_storage_free_bubbles(*animation);
+        animation_storage_free_frames(*animation);
+        if((*animation)->frame_order) {
+            free((void*)(*animation)->frame_order);
+        }
+        free(*animation);
+        *animation = NULL;
+    }
+}
+
+void animation_storage_free_storage_animation(StorageAnimation** storage_animation) {
+    furi_assert(storage_animation);
+    furi_assert(*storage_animation);
+
+    if((*storage_animation)->external) {
+        animation_storage_free_animation((BubbleAnimation**)&(*storage_animation)->animation);
+
+        if((*storage_animation)->manifest_info.name) {
+            free((void*)(*storage_animation)->manifest_info.name);
+        }
+        free(*storage_animation);
+    }
+
+    *storage_animation = NULL;
+}
+
+static bool animation_storage_cast_align(string_t align_str, Align* align) {
+    if(!string_cmp_str(align_str, "Bottom")) {
+        *align = AlignBottom;
+    } else if(!string_cmp_str(align_str, "Top")) {
+        *align = AlignTop;
+    } else if(!string_cmp_str(align_str, "Left")) {
+        *align = AlignLeft;
+    } else if(!string_cmp_str(align_str, "Right")) {
+        *align = AlignRight;
+    } else if(!string_cmp_str(align_str, "Center")) {
+        *align = AlignCenter;
+    } else {
+        return false;
+    }
+
+    return true;
+}
+
+static void animation_storage_free_frames(BubbleAnimation* animation) {
+    furi_assert(animation);
+
+    const Icon* icon = &animation->icon_animation;
+    for(int i = 0; i < icon->frame_count; ++i) {
+        if(icon->frames[i]) {
+            free((void*)icon->frames[i]);
+        }
+    }
+
+    free((void*)icon->frames);
+}
+
+static bool animation_storage_load_frames(
+    Storage* storage,
+    const char* name,
+    BubbleAnimation* animation,
+    uint32_t* frame_order,
+    uint8_t width,
+    uint8_t height) {
+    uint16_t frame_order_count = animation->passive_frames + animation->active_frames;
+
+    /* The frames should go in order (0...N), without omissions */
+    size_t max_frame_count = 0;
+    for(int i = 0; i < frame_order_count; ++i) {
+        max_frame_count = MAX(max_frame_count, frame_order[i]);
+    }
+
+    if((max_frame_count >= frame_order_count) || (max_frame_count >= 256 /* max uint8_t */)) {
+        return false;
+    }
+
+    Icon* icon = (Icon*)&animation->icon_animation;
+    FURI_CONST_ASSIGN(icon->frame_count, max_frame_count + 1);
+    FURI_CONST_ASSIGN(icon->frame_rate, 0);
+    FURI_CONST_ASSIGN(icon->height, height);
+    FURI_CONST_ASSIGN(icon->width, width);
+    icon->frames = malloc(sizeof(const uint8_t*) * icon->frame_count);
+
+    bool frames_ok = false;
+    File* file = storage_file_alloc(storage);
+    FileInfo file_info;
+    string_t filename;
+    string_init(filename);
+    size_t max_filesize = ROUND_UP_TO(width, 8) * height + 1;
+
+    for(int i = 0; i < icon->frame_count; ++i) {
+        frames_ok = false;
+        string_printf(filename, ANIMATION_DIR "/%s/frame_%d.bm", name, i);
+
+        if(storage_common_stat(storage, string_get_cstr(filename), &file_info) != FSE_OK) break;
+        if(file_info.size > max_filesize) {
+            FURI_LOG_E(
+                TAG,
+                "Filesize %d, max: %d (width %d, height %d)",
+                file_info.size,
+                max_filesize,
+                width,
+                height);
+            break;
+        }
+        if(!storage_file_open(file, string_get_cstr(filename), FSAM_READ, FSOM_OPEN_EXISTING)) {
+            FURI_LOG_E(TAG, "Can't open file \'%s\'", string_get_cstr(filename));
+            break;
+        }
+
+        FURI_CONST_ASSIGN_PTR(icon->frames[i], malloc(file_info.size));
+        if(storage_file_read(file, (void*)icon->frames[i], file_info.size) != file_info.size) {
+            FURI_LOG_E(TAG, "Read failed: \'%s\'", string_get_cstr(filename));
+            break;
+        }
+        storage_file_close(file);
+        frames_ok = true;
+    }
+
+    if(!frames_ok) {
+        FURI_LOG_E(
+            TAG,
+            "Load \'%s\' failed, %dx%d, size: %d",
+            string_get_cstr(filename),
+            width,
+            height,
+            file_info.size);
+        animation_storage_free_frames(animation);
+    } else {
+        furi_check(animation->icon_animation.frames);
+        for(int i = 0; i < animation->icon_animation.frame_count; ++i) {
+            furi_check(animation->icon_animation.frames[i]);
+        }
+    }
+
+    storage_file_free(file);
+    string_clear(filename);
+
+    return frames_ok;
+}
+
+static bool animation_storage_load_bubbles(BubbleAnimation* animation, FlipperFormat* ff) {
+    uint32_t u32value;
+    string_t str;
+    string_init(str);
+    bool success = false;
+    furi_assert(!animation->frame_bubble_sequences);
+
+    do {
+        if(!flipper_format_read_uint32(ff, "Bubble slots", &u32value, 1)) break;
+        if(u32value > 20) break;
+        animation->frame_bubble_sequences_count = u32value;
+        if(animation->frame_bubble_sequences_count == 0) {
+            animation->frame_bubble_sequences = NULL;
+            success = true;
+            break;
+        }
+        animation->frame_bubble_sequences =
+            malloc(sizeof(FrameBubble*) * animation->frame_bubble_sequences_count);
+
+        int32_t current_slot = 0;
+        for(int i = 0; i < animation->frame_bubble_sequences_count; ++i) {
+            FURI_CONST_ASSIGN_PTR(
+                animation->frame_bubble_sequences[i], malloc(sizeof(FrameBubble)));
+        }
+
+        const FrameBubble* bubble = animation->frame_bubble_sequences[0];
+        int8_t index = -1;
+        for(;;) {
+            if(!flipper_format_read_int32(ff, "Slot", &current_slot, 1)) break;
+            if((current_slot != 0) && (index == -1)) break;
+
+            if(current_slot == index) {
+                FURI_CONST_ASSIGN_PTR(bubble->next_bubble, malloc(sizeof(FrameBubble)));
+                bubble = bubble->next_bubble;
+            } else if(current_slot == index + 1) {
+                ++index;
+                bubble = animation->frame_bubble_sequences[index];
+            } else {
+                /* slots have to start from 0, be ascending sorted, and
+                 * have exact number of slots as specified in "Bubble slots" */
+                break;
+            }
+            if(index >= animation->frame_bubble_sequences_count) break;
+
+            if(!flipper_format_read_uint32(ff, "X", &u32value, 1)) break;
+            FURI_CONST_ASSIGN(bubble->bubble.x, u32value);
+            if(!flipper_format_read_uint32(ff, "Y", &u32value, 1)) break;
+            FURI_CONST_ASSIGN(bubble->bubble.y, u32value);
+
+            if(!flipper_format_read_string(ff, "Text", str)) break;
+            if(string_size(str) > 100) break;
+
+            string_replace_all_str(str, "\\n", "\n");
+
+            FURI_CONST_ASSIGN_PTR(bubble->bubble.text, malloc(string_size(str) + 1));
+            strcpy((char*)bubble->bubble.text, string_get_cstr(str));
+
+            if(!flipper_format_read_string(ff, "AlignH", str)) break;
+            if(!animation_storage_cast_align(str, (Align*)&bubble->bubble.align_h)) break;
+            if(!flipper_format_read_string(ff, "AlignV", str)) break;
+            if(!animation_storage_cast_align(str, (Align*)&bubble->bubble.align_v)) break;
+
+            if(!flipper_format_read_uint32(ff, "StartFrame", &u32value, 1)) break;
+            FURI_CONST_ASSIGN(bubble->start_frame, u32value);
+            if(!flipper_format_read_uint32(ff, "EndFrame", &u32value, 1)) break;
+            FURI_CONST_ASSIGN(bubble->end_frame, u32value);
+        }
+        success = (index + 1) == animation->frame_bubble_sequences_count;
+    } while(0);
+
+    if(!success) {
+        if(animation->frame_bubble_sequences) {
+            FURI_LOG_E(TAG, "Failed to load animation bubbles");
+            animation_storage_free_bubbles(animation);
+        }
+    }
+
+    string_clear(str);
+    return success;
+}
+
+static BubbleAnimation* animation_storage_load_animation(const char* name) {
+    furi_assert(name);
+    BubbleAnimation* animation = malloc(sizeof(BubbleAnimation));
+
+    uint32_t height = 0;
+    uint32_t width = 0;
+    uint32_t* u32array = NULL;
+    Storage* storage = furi_record_open(RECORD_STORAGE);
+    FlipperFormat* ff = flipper_format_file_alloc(storage);
+    /* Forbid skipping fields */
+    flipper_format_set_strict_mode(ff, true);
+    string_t str;
+    string_init(str);
+    animation->frame_bubble_sequences = NULL;
+
+    bool success = false;
+    do {
+        uint32_t u32value;
+
+        if(FSE_OK != storage_sd_status(storage)) break;
+
+        string_printf(str, ANIMATION_DIR "/%s/" ANIMATION_META_FILE, name);
+        if(!flipper_format_file_open_existing(ff, string_get_cstr(str))) break;
+        if(!flipper_format_read_header(ff, str, &u32value)) break;
+        if(string_cmp_str(str, "Flipper Animation")) break;
+
+        if(!flipper_format_read_uint32(ff, "Width", &width, 1)) break;
+        if(!flipper_format_read_uint32(ff, "Height", &height, 1)) break;
+
+        if(!flipper_format_read_uint32(ff, "Passive frames", &u32value, 1)) break;
+        animation->passive_frames = u32value;
+        if(!flipper_format_read_uint32(ff, "Active frames", &u32value, 1)) break;
+        animation->active_frames = u32value;
+
+        uint8_t frames = animation->passive_frames + animation->active_frames;
+        uint32_t count = 0;
+        if(!flipper_format_get_value_count(ff, "Frames order", &count)) break;
+        if(count != frames) {
+            FURI_LOG_E(TAG, "Error loading animation: frames order");
+            break;
+        }
+        u32array = malloc(sizeof(uint32_t) * frames);
+        if(!flipper_format_read_uint32(ff, "Frames order", u32array, frames)) break;
+        animation->frame_order = malloc(sizeof(uint8_t) * frames);
+        for(int i = 0; i < frames; ++i) {
+            FURI_CONST_ASSIGN(animation->frame_order[i], u32array[i]);
+        }
+
+        /* passive and active frames must be loaded up to this point */
+        if(!animation_storage_load_frames(storage, name, animation, u32array, width, height))
+            break;
+
+        if(!flipper_format_read_uint32(ff, "Active cycles", &u32value, 1)) break;
+        animation->active_cycles = u32value;
+        if(!flipper_format_read_uint32(ff, "Frame rate", &u32value, 1)) break;
+        FURI_CONST_ASSIGN(animation->icon_animation.frame_rate, u32value);
+        if(!flipper_format_read_uint32(ff, "Duration", &u32value, 1)) break;
+        animation->duration = u32value;
+        if(!flipper_format_read_uint32(ff, "Active cooldown", &u32value, 1)) break;
+        animation->active_cooldown = u32value;
+
+        if(!animation_storage_load_bubbles(animation, ff)) break;
+        success = true;
+    } while(0);
+
+    string_clear(str);
+    flipper_format_free(ff);
+    if(u32array) {
+        free(u32array);
+    }
+
+    if(!success) {
+        if(animation->frame_order) {
+            free((void*)animation->frame_order);
+        }
+        free(animation);
+        animation = NULL;
+    }
+
+    return animation;
+}
+
+static void animation_storage_free_bubbles(BubbleAnimation* animation) {
+    if(!animation->frame_bubble_sequences) return;
+
+    for(int i = 0; i < animation->frame_bubble_sequences_count;) {
+        const FrameBubble* const* bubble = &animation->frame_bubble_sequences[i];
+
+        if((*bubble) == NULL) break;
+
+        while((*bubble)->next_bubble != NULL) {
+            bubble = &(*bubble)->next_bubble;
+        }
+
+        if((*bubble)->bubble.text) {
+            free((void*)(*bubble)->bubble.text);
+        }
+        if((*bubble) == animation->frame_bubble_sequences[i]) {
+            ++i;
+        }
+        free((void*)*bubble);
+        FURI_CONST_ASSIGN_PTR(*bubble, NULL);
+    }
+    free((void*)animation->frame_bubble_sequences);
+    animation->frame_bubble_sequences = NULL;
+}

applications/services/desktop/animations/animation_storage.h

@@ -0,0 +1,89 @@
+#pragma once
+#include <stdint.h>
+#include <m-list.h>
+#include "views/bubble_animation_view.h"
+#include <m-string.h>
+
+/** Main structure to handle animation data.
+ * Contains all, including animation playing data (BubbleAnimation),
+ * data for random animation selection (StorageAnimationMeta) and
+ * flag of location internal/external */
+typedef struct StorageAnimation StorageAnimation;
+
+typedef struct {
+    const char* name;
+    uint8_t min_butthurt;
+    uint8_t max_butthurt;
+    uint8_t min_level;
+    uint8_t max_level;
+    uint8_t weight;
+} StorageAnimationManifestInfo;
+
+/** Container to return available animations list */
+LIST_DEF(StorageAnimationList, StorageAnimation*, M_PTR_OPLIST)
+#define M_OPL_StorageAnimationList_t() LIST_OPLIST(StorageAnimationList)
+
+/**
+ * Fill list of available animations.
+ * List will contain all idle animations on inner flash
+ * and all available on SD-card, mentioned in manifest.txt.
+ * Performs caching of animation. If fail - falls back to
+ * inner animation.
+ * List has to be initialized.
+ *
+ * @list        list to fill with animations data
+ */
+void animation_storage_fill_animation_list(StorageAnimationList_t* list);
+
+/**
+ * Get bubble animation of storage animation.
+ * Bubble Animation is a structure which describes animation
+ * independent of it's place of storage and meta data.
+ * It contain all what is need to be played.
+ * If storage_animation is not cached - caches it.
+ *
+ * @storage_animation       animation from which extract bubble animation
+ * @return                  bubble_animation, NULL if failed to cache data.
+ */
+const BubbleAnimation* animation_storage_get_bubble_animation(StorageAnimation* storage_animation);
+
+/**
+ * Performs caching animation data (Bubble Animation)
+ * if this is not done yet.
+ *
+ * @storage_animation       animation to cache
+ */
+void animation_storage_cache_animation(StorageAnimation* storage_animation);
+
+/**
+ * Find animation by name.
+ * Search through the inner flash, and SD-card if has.
+ *
+ * @name        name of animation
+ * @return      found animation. NULL if nothing found.
+ */
+StorageAnimation* animation_storage_find_animation(const char* name);
+
+/**
+ * Get meta information of storage animation.
+ * This information allows to randomly select animation.
+ * Also it contains name. Never returns NULL.
+ *
+ * @storage_animation       item of whom we have to extract meta.
+ * @return                  meta itself
+ */
+StorageAnimationManifestInfo* animation_storage_get_meta(StorageAnimation* storage_animation);
+
+/**
+ * Free storage_animation, which previously acquired
+ * by Animation Storage.
+ *
+ * @storage_animation   item to free. NULL-ed after all.
+ */
+void animation_storage_free_storage_animation(StorageAnimation** storage_animation);
+
+/**
+ * Has to be called at least 1 time to initialize runtime structures
+ * of animations in inner flash.
+ */
+void animation_storage_initialize_internal_animations(void);

applications/services/desktop/animations/animation_storage_i.h

@@ -0,0 +1,9 @@
+#pragma once
+#include "animation_storage.h"
+#include "animation_manager.h"
+
+struct StorageAnimation {
+    const BubbleAnimation* animation;
+    bool external;
+    StorageAnimationManifestInfo manifest_info;
+};

applications/services/desktop/animations/views/bubble_animation_view.c

@@ -0,0 +1,409 @@
+
+#include "../animation_manager.h"
+#include "../animation_storage.h"
+#include "bubble_animation_view.h"
+
+#include <furi_hal.h>
+#include <furi.h>
+#include <gui/canvas.h>
+#include <gui/elements.h>
+#include <gui/view.h>
+#include <gui/icon_i.h>
+#include <input/input.h>
+#include <stdint.h>
+#include <core/dangerous_defines.h>
+
+#define ACTIVE_SHIFT 2
+
+typedef struct {
+    const BubbleAnimation* current;
+    const FrameBubble* current_bubble;
+    uint8_t current_frame;
+    uint8_t active_cycle;
+    uint8_t active_bubbles;
+    uint8_t passive_bubbles;
+    uint8_t active_shift;
+    TickType_t active_ended_at;
+    Icon* freeze_frame;
+} BubbleAnimationViewModel;
+
+struct BubbleAnimationView {
+    View* view;
+    FuriTimer* timer;
+    BubbleAnimationInteractCallback interact_callback;
+    void* interact_callback_context;
+};
+
+static void bubble_animation_activate(BubbleAnimationView* view, bool force);
+static void bubble_animation_activate_right_now(BubbleAnimationView* view);
+
+static uint8_t bubble_animation_get_frame_index(BubbleAnimationViewModel* model) {
+    furi_assert(model);
+    uint8_t icon_index = 0;
+    const BubbleAnimation* animation = model->current;
+
+    if(model->current_frame < animation->passive_frames) {
+        icon_index = model->current_frame;
+    } else {
+        icon_index =
+            (model->current_frame - animation->passive_frames) % animation->active_frames +
+            animation->passive_frames;
+    }
+    furi_assert(icon_index < (animation->passive_frames + animation->active_frames));
+
+    return animation->frame_order[icon_index];
+}
+
+static void bubble_animation_draw_callback(Canvas* canvas, void* model_) {
+    furi_assert(model_);
+    furi_assert(canvas);
+
+    BubbleAnimationViewModel* model = model_;
+    const BubbleAnimation* animation = model->current;
+
+    if(model->freeze_frame) {
+        uint8_t y_offset = canvas_height(canvas) - icon_get_height(model->freeze_frame);
+        canvas_draw_icon(canvas, 0, y_offset, model->freeze_frame);
+        return;
+    }
+
+    if(!animation) {
+        return;
+    }
+
+    furi_assert(model->current_frame < 255);
+
+    uint8_t index = bubble_animation_get_frame_index(model);
+    uint8_t width = icon_get_width(&animation->icon_animation);
+    uint8_t height = icon_get_height(&animation->icon_animation);
+    uint8_t y_offset = canvas_height(canvas) - height;
+    canvas_draw_bitmap(
+        canvas, 0, y_offset, width, height, animation->icon_animation.frames[index]);
+
+    const FrameBubble* bubble = model->current_bubble;
+    if(bubble) {
+        if((model->current_frame >= bubble->start_frame) &&
+           (model->current_frame <= bubble->end_frame)) {
+            const Bubble* b = &bubble->bubble;
+            elements_bubble_str(canvas, b->x, b->y, b->text, b->align_h, b->align_v);
+        }
+    }
+}
+
+static const FrameBubble*
+    bubble_animation_pick_bubble(BubbleAnimationViewModel* model, bool active) {
+    const FrameBubble* bubble = NULL;
+
+    if((model->active_bubbles == 0) && (model->passive_bubbles == 0)) {
+        return NULL;
+    }
+
+    uint8_t index =
+        furi_hal_random_get() % (active ? model->active_bubbles : model->passive_bubbles);
+    const BubbleAnimation* animation = model->current;
+
+    for(int i = 0; i < animation->frame_bubble_sequences_count; ++i) {
+        if((animation->frame_bubble_sequences[i]->start_frame < animation->passive_frames) ^
+           active) {
+            if(!index) {
+                bubble = animation->frame_bubble_sequences[i];
+            }
+            --index;
+        }
+    }
+
+    return bubble;
+}
+
+static bool bubble_animation_input_callback(InputEvent* event, void* context) {
+    furi_assert(context);
+    furi_assert(event);
+
+    BubbleAnimationView* animation_view = context;
+    bool consumed = false;
+
+    if(event->type == InputTypePress) {
+        bubble_animation_activate(animation_view, false);
+    }
+
+    if(event->key == InputKeyRight) {
+        /* Right button reserved for animation activation, so consume */
+        consumed = true;
+        if(event->type == InputTypeShort) {
+            if(animation_view->interact_callback) {
+                animation_view->interact_callback(animation_view->interact_callback_context);
+            }
+        }
+    }
+
+    return consumed;
+}
+
+static void bubble_animation_activate(BubbleAnimationView* view, bool force) {
+    furi_assert(view);
+    bool activate = true;
+    BubbleAnimationViewModel* model = view_get_model(view->view);
+    if(model->current == NULL) {
+        activate = false;
+    } else if(model->freeze_frame) {
+        activate = false;
+    } else if(model->current->active_frames == 0) {
+        activate = false;
+    }
+
+    if(model->current != NULL) {
+        if(!force) {
+            if((model->active_ended_at + model->current->active_cooldown * 1000) >
+               xTaskGetTickCount()) {
+                activate = false;
+            } else if(model->active_shift) {
+                activate = false;
+            } else if(model->current_frame >= model->current->passive_frames) {
+                activate = false;
+            }
+        }
+    }
+    view_commit_model(view->view, false);
+
+    if(!activate && !force) {
+        return;
+    }
+
+    if(ACTIVE_SHIFT > 0) {
+        BubbleAnimationViewModel* model = view_get_model(view->view);
+        model->active_shift = ACTIVE_SHIFT;
+        view_commit_model(view->view, false);
+    } else {
+        bubble_animation_activate_right_now(view);
+    }
+}
+
+static void bubble_animation_activate_right_now(BubbleAnimationView* view) {
+    furi_assert(view);
+
+    uint8_t frame_rate = 0;
+
+    BubbleAnimationViewModel* model = view_get_model(view->view);
+    if(model->current && (model->current->active_frames > 0) && (!model->freeze_frame)) {
+        model->current_frame = model->current->passive_frames;
+        model->current_bubble = bubble_animation_pick_bubble(model, true);
+        frame_rate = model->current->icon_animation.frame_rate;
+    }
+    view_commit_model(view->view, true);
+
+    if(frame_rate) {
+        furi_timer_start(view->timer, 1000 / frame_rate);
+    }
+}
+
+static void bubble_animation_next_frame(BubbleAnimationViewModel* model) {
+    furi_assert(model);
+
+    if(!model->current) {
+        return;
+    }
+
+    if(model->current_frame < model->current->passive_frames) {
+        model->current_frame = (model->current_frame + 1) % model->current->passive_frames;
+    } else {
+        ++model->current_frame;
+        model->active_cycle +=
+            !((model->current_frame - model->current->passive_frames) %
+              model->current->active_frames);
+        if(model->active_cycle >= model->current->active_cycles) {
+            // switch to passive
+            model->active_cycle = 0;
+            model->current_frame = 0;
+            model->current_bubble = bubble_animation_pick_bubble(model, false);
+            model->active_ended_at = xTaskGetTickCount();
+        }
+
+        if(model->current_bubble) {
+            if(model->current_frame > model->current_bubble->end_frame) {
+                model->current_bubble = model->current_bubble->next_bubble;
+            }
+        }
+    }
+}
+
+static void bubble_animation_timer_callback(void* context) {
+    furi_assert(context);
+    BubbleAnimationView* view = context;
+    bool activate = false;
+
+    BubbleAnimationViewModel* model = view_get_model(view->view);
+
+    if(model->active_shift > 0) {
+        activate = (--model->active_shift == 0);
+    }
+
+    if(!model->freeze_frame && !activate) {
+        bubble_animation_next_frame(model);
+    }
+
+    view_commit_model(view->view, !activate);
+
+    if(activate) {
+        bubble_animation_activate_right_now(view);
+    }
+}
+
+/* always freeze first passive frame, because
+ * animation is always activated at unfreezing and played
+ * passive frame first, and 2 frames after - active
+ */
+static Icon* bubble_animation_clone_first_frame(const Icon* icon_orig) {
+    furi_assert(icon_orig);
+    furi_assert(icon_orig->frames);
+    furi_assert(icon_orig->frames[0]);
+
+    Icon* icon_clone = malloc(sizeof(Icon));
+    memcpy(icon_clone, icon_orig, sizeof(Icon));
+
+    icon_clone->frames = malloc(sizeof(uint8_t*));
+    /* icon bitmap can be either compressed or not. It is compressed if
+     * compressed size is less than original, so max size for bitmap is
+     * uncompressed (width * height) + 1 byte (in uncompressed case)
+     * for compressed header
+     */
+    size_t max_bitmap_size = ROUND_UP_TO(icon_orig->width, 8) * icon_orig->height + 1;
+    FURI_CONST_ASSIGN_PTR(icon_clone->frames[0], malloc(max_bitmap_size));
+    memcpy((void*)icon_clone->frames[0], icon_orig->frames[0], max_bitmap_size);
+    FURI_CONST_ASSIGN(icon_clone->frame_count, 1);
+
+    return icon_clone;
+}
+
+static void bubble_animation_release_frame(Icon** icon) {
+    furi_assert(icon);
+    furi_assert(*icon);
+
+    free((void*)(*icon)->frames[0]);
+    free((void*)(*icon)->frames);
+    free(*icon);
+    *icon = NULL;
+}
+
+static void bubble_animation_enter(void* context) {
+    furi_assert(context);
+    BubbleAnimationView* view = context;
+    bubble_animation_activate(view, false);
+
+    BubbleAnimationViewModel* model = view_get_model(view->view);
+    uint8_t frame_rate = 0;
+    if(model->current != NULL) {
+        frame_rate = model->current->icon_animation.frame_rate;
+    }
+    view_commit_model(view->view, false);
+
+    if(frame_rate) {
+        furi_timer_start(view->timer, 1000 / frame_rate);
+    }
+}
+
+static void bubble_animation_exit(void* context) {
+    furi_assert(context);
+    BubbleAnimationView* view = context;
+    furi_timer_stop(view->timer);
+}
+
+BubbleAnimationView* bubble_animation_view_alloc(void) {
+    BubbleAnimationView* view = malloc(sizeof(BubbleAnimationView));
+    view->view = view_alloc();
+    view->interact_callback = NULL;
+    view->timer = furi_timer_alloc(bubble_animation_timer_callback, FuriTimerTypePeriodic, view);
+
+    view_allocate_model(view->view, ViewModelTypeLocking, sizeof(BubbleAnimationViewModel));
+    view_set_context(view->view, view);
+    view_set_draw_callback(view->view, bubble_animation_draw_callback);
+    view_set_input_callback(view->view, bubble_animation_input_callback);
+    view_set_enter_callback(view->view, bubble_animation_enter);
+    view_set_exit_callback(view->view, bubble_animation_exit);
+
+    return view;
+}
+
+void bubble_animation_view_free(BubbleAnimationView* view) {
+    furi_assert(view);
+
+    view_set_draw_callback(view->view, NULL);
+    view_set_input_callback(view->view, NULL);
+    view_set_context(view->view, NULL);
+
+    view_free(view->view);
+    view->view = NULL;
+    free(view);
+}
+
+void bubble_animation_view_set_interact_callback(
+    BubbleAnimationView* view,
+    BubbleAnimationInteractCallback callback,
+    void* context) {
+    furi_assert(view);
+
+    view->interact_callback_context = context;
+    view->interact_callback = callback;
+}
+
+void bubble_animation_view_set_animation(
+    BubbleAnimationView* view,
+    const BubbleAnimation* new_animation) {
+    furi_assert(view);
+    furi_assert(new_animation);
+
+    BubbleAnimationViewModel* model = view_get_model(view->view);
+    furi_assert(model);
+    model->current = new_animation;
+
+    model->active_ended_at = xTaskGetTickCount() - (model->current->active_cooldown * 1000);
+    model->active_bubbles = 0;
+    model->passive_bubbles = 0;
+    for(int i = 0; i < new_animation->frame_bubble_sequences_count; ++i) {
+        if(new_animation->frame_bubble_sequences[i]->start_frame < new_animation->passive_frames) {
+            ++model->passive_bubbles;
+        } else {
+            ++model->active_bubbles;
+        }
+    }
+
+    /* select bubble sequence */
+    model->current_bubble = bubble_animation_pick_bubble(model, false);
+    model->current_frame = 0;
+    model->active_cycle = 0;
+    view_commit_model(view->view, true);
+
+    furi_timer_start(view->timer, 1000 / new_animation->icon_animation.frame_rate);
+}
+
+void bubble_animation_freeze(BubbleAnimationView* view) {
+    furi_assert(view);
+
+    BubbleAnimationViewModel* model = view_get_model(view->view);
+    furi_assert(model->current);
+    furi_assert(!model->freeze_frame);
+    model->freeze_frame = bubble_animation_clone_first_frame(&model->current->icon_animation);
+    model->current = NULL;
+    view_commit_model(view->view, false);
+    furi_timer_stop(view->timer);
+}
+
+void bubble_animation_unfreeze(BubbleAnimationView* view) {
+    furi_assert(view);
+    uint8_t frame_rate;
+
+    BubbleAnimationViewModel* model = view_get_model(view->view);
+    furi_assert(model->freeze_frame);
+    bubble_animation_release_frame(&model->freeze_frame);
+    furi_assert(model->current);
+    frame_rate = model->current->icon_animation.frame_rate;
+    view_commit_model(view->view, true);
+
+    furi_timer_start(view->timer, 1000 / frame_rate);
+    bubble_animation_activate(view, false);
+}
+
+View* bubble_animation_get_view(BubbleAnimationView* view) {
+    furi_assert(view);
+
+    return view->view;
+}

applications/services/desktop/animations/views/bubble_animation_view.h

@@ -0,0 +1,89 @@
+#pragma once
+
+#include <gui/view.h>
+#include "../animation_manager.h"
+
+/** Bubble Animation instance */
+typedef struct BubbleAnimationView BubbleAnimationView;
+
+/** Callback type to be called when interact button pressed */
+typedef void (*BubbleAnimationInteractCallback)(void*);
+
+/**
+ * Allocate bubble animation view.
+ * This is animation with bubbles, and 2 phases:
+ * active and passive.
+ *
+ * @return instance of new bubble animation
+ */
+BubbleAnimationView* bubble_animation_view_alloc(void);
+
+/**
+ * Free bubble animation view.
+ *
+ * @view        bubble animation view instance
+ */
+void bubble_animation_view_free(BubbleAnimationView* view);
+
+/**
+ * Set callback for interact action for animation.
+ * Currently this is right button.
+ *
+ * @view        bubble animation view instance
+ * @callback    callback to call when button pressed
+ * @context     context
+ */
+void bubble_animation_view_set_interact_callback(
+    BubbleAnimationView* view,
+    BubbleAnimationInteractCallback callback,
+    void* context);
+
+/**
+ * Set new animation.
+ * BubbleAnimation doesn't posses Bubble Animation object
+ * so it doesn't handle any memory manipulation on Bubble Animations.
+ *
+ * @view                    bubble animation view instance
+ * @new_bubble_animation    new animation to set
+ */
+void bubble_animation_view_set_animation(
+    BubbleAnimationView* view,
+    const BubbleAnimation* new_bubble_animation);
+
+/**
+ * Get view of bubble animation.
+ *
+ * @view        bubble animation view instance
+ * @return      view
+ */
+View* bubble_animation_get_view(BubbleAnimationView* view);
+
+/**
+ * Freeze current playing animation. Saves a frame to be shown
+ * during next unfreeze called.
+ * bubble_animation_freeze() stops any reference to 'current' animation
+ * so it can be freed. Therefore lock unfreeze should be preceeded with
+ * new animation set.
+ *
+ * Freeze/Unfreeze usage example:
+ *
+ *  animation_view_alloc()
+ *  set_animation()
+ *  ...
+ *  freeze_animation()
+ *   // release animation
+ *  ...
+ *   // allocate animation
+ *  set_animation()
+ *  unfreeze()
+ *
+ * @view        bubble animation view instance
+ */
+void bubble_animation_freeze(BubbleAnimationView* view);
+
+/**
+ * Starts bubble animation after freezing.
+ *
+ * @view        bubble animation view instance
+ */
+void bubble_animation_unfreeze(BubbleAnimationView* view);

applications/services/desktop/animations/views/one_shot_animation_view.c

@@ -0,0 +1,130 @@
+
+#include "one_shot_animation_view.h"
+#include <furi.h>
+#include <portmacro.h>
+#include <gui/canvas.h>
+#include <gui/view.h>
+#include <gui/icon_i.h>
+#include <stdint.h>
+
+typedef void (*OneShotInteractCallback)(void*);
+
+struct OneShotView {
+    View* view;
+    TimerHandle_t update_timer;
+    OneShotInteractCallback interact_callback;
+    void* interact_callback_context;
+};
+
+typedef struct {
+    const Icon* icon;
+    uint32_t index;
+    bool block_input;
+} OneShotViewModel;
+
+static void one_shot_view_update_timer_callback(TimerHandle_t xTimer) {
+    OneShotView* view = (void*)pvTimerGetTimerID(xTimer);
+
+    OneShotViewModel* model = view_get_model(view->view);
+    if((model->index + 1) < model->icon->frame_count) {
+        ++model->index;
+    } else {
+        model->block_input = false;
+        model->index = model->icon->frame_count - 2;
+    }
+    view_commit_model(view->view, true);
+}
+
+static void one_shot_view_draw(Canvas* canvas, void* model_) {
+    furi_assert(canvas);
+    furi_assert(model_);
+
+    OneShotViewModel* model = model_;
+    furi_check(model->index < model->icon->frame_count);
+    uint8_t y_offset = canvas_height(canvas) - model->icon->height;
+    canvas_draw_bitmap(
+        canvas,
+        0,
+        y_offset,
+        model->icon->width,
+        model->icon->height,
+        model->icon->frames[model->index]);
+}
+
+static bool one_shot_view_input(InputEvent* event, void* context) {
+    furi_assert(context);
+    furi_assert(event);
+
+    OneShotView* view = context;
+    bool consumed = false;
+
+    OneShotViewModel* model = view_get_model(view->view);
+    consumed = model->block_input;
+    view_commit_model(view->view, false);
+
+    if(!consumed) {
+        if(event->key == InputKeyRight) {
+            /* Right button reserved for animation activation, so consume */
+            consumed = true;
+            if(event->type == InputTypeShort) {
+                if(view->interact_callback) {
+                    view->interact_callback(view->interact_callback_context);
+                }
+            }
+        }
+    }
+
+    return consumed;
+}
+
+OneShotView* one_shot_view_alloc(void) {
+    OneShotView* view = malloc(sizeof(OneShotView));
+    view->view = view_alloc();
+    view->update_timer =
+        xTimerCreate(NULL, 1000, pdTRUE, view, one_shot_view_update_timer_callback);
+
+    view_allocate_model(view->view, ViewModelTypeLocking, sizeof(OneShotViewModel));
+    view_set_context(view->view, view);
+    view_set_draw_callback(view->view, one_shot_view_draw);
+    view_set_input_callback(view->view, one_shot_view_input);
+
+    return view;
+}
+
+void one_shot_view_free(OneShotView* view) {
+    furi_assert(view);
+
+    xTimerDelete(view->update_timer, portMAX_DELAY);
+    view_free(view->view);
+    view->view = NULL;
+    free(view);
+}
+
+void one_shot_view_set_interact_callback(
+    OneShotView* view,
+    OneShotInteractCallback callback,
+    void* context) {
+    furi_assert(view);
+
+    view->interact_callback_context = context;
+    view->interact_callback = callback;
+}
+
+void one_shot_view_start_animation(OneShotView* view, const Icon* icon) {
+    furi_assert(view);
+    furi_assert(icon);
+    furi_check(icon->frame_count >= 2);
+
+    OneShotViewModel* model = view_get_model(view->view);
+    model->index = 0;
+    model->icon = icon;
+    model->block_input = true;
+    view_commit_model(view->view, true);
+    xTimerChangePeriod(view->update_timer, 1000 / model->icon->frame_rate, portMAX_DELAY);
+}
+
+View* one_shot_view_get_view(OneShotView* view) {
+    furi_assert(view);
+
+    return view->view;
+}

applications/services/desktop/animations/views/one_shot_animation_view.h

@@ -0,0 +1,17 @@
+#pragma once
+
+#include <furi.h>
+#include <gui/view.h>
+#include <stdint.h>
+
+typedef void (*OneShotInteractCallback)(void*);
+typedef struct OneShotView OneShotView;
+
+OneShotView* one_shot_view_alloc(void);
+void one_shot_view_free(OneShotView* view);
+void one_shot_view_set_interact_callback(
+    OneShotView* view,
+    OneShotInteractCallback callback,
+    void* context);
+void one_shot_view_start_animation(OneShotView* view, const Icon* icon);
+View* one_shot_view_get_view(OneShotView* view);

applications/services/desktop/application.fam

@@ -0,0 +1,17 @@
+App(
+    appid="desktop",
+    name="DesktopSrv",
+    apptype=FlipperAppType.SERVICE,
+    entry_point="desktop_srv",
+    cdefines=["SRV_DESKTOP"],
+    requires=[
+        "gui",
+        "dolphin",
+        "storage",
+        "input",
+    ],
+    provides=["desktop_settings"],
+    conflicts=["updater"],
+    stack_size=2 * 1024,
+    order=60,
+)

applications/services/desktop/desktop.c

@@ -0,0 +1,338 @@
+#include <storage/storage.h>
+#include <assets_icons.h>
+#include <gui/gui.h>
+#include <gui/view_stack.h>
+#include <notification/notification.h>
+#include <notification/notification_messages.h>
+#include <furi.h>
+#include <furi_hal.h>
+
+#include "animations/animation_manager.h"
+#include "desktop/scenes/desktop_scene.h"
+#include "desktop/scenes/desktop_scene_i.h"
+#include "desktop/views/desktop_view_locked.h"
+#include "desktop/views/desktop_view_pin_input.h"
+#include "desktop/views/desktop_view_pin_timeout.h"
+#include "desktop_i.h"
+#include "helpers/pin_lock.h"
+#include "helpers/slideshow_filename.h"
+
+static void desktop_auto_lock_arm(Desktop*);
+static void desktop_auto_lock_inhibit(Desktop*);
+static void desktop_start_auto_lock_timer(Desktop*);
+
+static void desktop_loader_callback(const void* message, void* context) {
+    furi_assert(context);
+    Desktop* desktop = context;
+    const LoaderEvent* event = message;
+
+    if(event->type == LoaderEventTypeApplicationStarted) {
+        view_dispatcher_send_custom_event(desktop->view_dispatcher, DesktopGlobalBeforeAppStarted);
+    } else if(event->type == LoaderEventTypeApplicationStopped) {
+        view_dispatcher_send_custom_event(desktop->view_dispatcher, DesktopGlobalAfterAppFinished);
+    }
+}
+
+static void desktop_lock_icon_callback(Canvas* canvas, void* context) {
+    UNUSED(context);
+    furi_assert(canvas);
+    canvas_draw_icon(canvas, 0, 0, &I_Lock_8x8);
+}
+
+static bool desktop_custom_event_callback(void* context, uint32_t event) {
+    furi_assert(context);
+    Desktop* desktop = (Desktop*)context;
+
+    switch(event) {
+    case DesktopGlobalBeforeAppStarted:
+        animation_manager_unload_and_stall_animation(desktop->animation_manager);
+        desktop_auto_lock_inhibit(desktop);
+        return true;
+    case DesktopGlobalAfterAppFinished:
+        animation_manager_load_and_continue_animation(desktop->animation_manager);
+        // TODO: Implement a message mechanism for loading settings and (optionally)
+        // locking and unlocking
+        LOAD_DESKTOP_SETTINGS(&desktop->settings);
+        desktop_auto_lock_arm(desktop);
+        return true;
+    case DesktopGlobalAutoLock:
+        if(!loader_is_locked(desktop->loader)) {
+            desktop_lock(desktop);
+        }
+        return true;
+    }
+
+    return scene_manager_handle_custom_event(desktop->scene_manager, event);
+}
+
+static bool desktop_back_event_callback(void* context) {
+    furi_assert(context);
+    Desktop* desktop = (Desktop*)context;
+    return scene_manager_handle_back_event(desktop->scene_manager);
+}
+
+static void desktop_tick_event_callback(void* context) {
+    furi_assert(context);
+    Desktop* app = context;
+    scene_manager_handle_tick_event(app->scene_manager);
+}
+
+static void desktop_input_event_callback(const void* value, void* context) {
+    furi_assert(value);
+    furi_assert(context);
+    const InputEvent* event = value;
+    Desktop* desktop = context;
+    if(event->type == InputTypePress) {
+        desktop_start_auto_lock_timer(desktop);
+    }
+}
+
+static void desktop_auto_lock_timer_callback(void* context) {
+    furi_assert(context);
+    Desktop* desktop = context;
+    view_dispatcher_send_custom_event(desktop->view_dispatcher, DesktopGlobalAutoLock);
+}
+
+static void desktop_start_auto_lock_timer(Desktop* desktop) {
+    furi_timer_start(
+        desktop->auto_lock_timer, furi_ms_to_ticks(desktop->settings.auto_lock_delay_ms));
+}
+
+static void desktop_stop_auto_lock_timer(Desktop* desktop) {
+    furi_timer_stop(desktop->auto_lock_timer);
+}
+
+static void desktop_auto_lock_arm(Desktop* desktop) {
+    if(desktop->settings.auto_lock_delay_ms) {
+        desktop->input_events_subscription = furi_pubsub_subscribe(
+            desktop->input_events_pubsub, desktop_input_event_callback, desktop);
+        desktop_start_auto_lock_timer(desktop);
+    }
+}
+
+static void desktop_auto_lock_inhibit(Desktop* desktop) {
+    desktop_stop_auto_lock_timer(desktop);
+    if(desktop->input_events_subscription) {
+        furi_pubsub_unsubscribe(desktop->input_events_pubsub, desktop->input_events_subscription);
+        desktop->input_events_subscription = NULL;
+    }
+}
+
+void desktop_lock(Desktop* desktop) {
+    desktop_auto_lock_inhibit(desktop);
+    scene_manager_set_scene_state(
+        desktop->scene_manager, DesktopSceneLocked, SCENE_LOCKED_FIRST_ENTER);
+    scene_manager_next_scene(desktop->scene_manager, DesktopSceneLocked);
+    notification_message(desktop->notification, &sequence_display_backlight_off_delay_1000);
+}
+
+void desktop_unlock(Desktop* desktop) {
+    view_port_enabled_set(desktop->lock_viewport, false);
+    Gui* gui = furi_record_open(RECORD_GUI);
+    gui_set_lockdown(gui, false);
+    furi_record_close(RECORD_GUI);
+    desktop_view_locked_unlock(desktop->locked_view);
+    scene_manager_search_and_switch_to_previous_scene(desktop->scene_manager, DesktopSceneMain);
+    desktop_auto_lock_arm(desktop);
+}
+
+Desktop* desktop_alloc() {
+    Desktop* desktop = malloc(sizeof(Desktop));
+
+    desktop->animation_manager = animation_manager_alloc();
+    desktop->gui = furi_record_open(RECORD_GUI);
+    desktop->scene_thread = furi_thread_alloc();
+    desktop->view_dispatcher = view_dispatcher_alloc();
+    desktop->scene_manager = scene_manager_alloc(&desktop_scene_handlers, desktop);
+
+    view_dispatcher_enable_queue(desktop->view_dispatcher);
+    view_dispatcher_attach_to_gui(
+        desktop->view_dispatcher, desktop->gui, ViewDispatcherTypeDesktop);
+    view_dispatcher_set_tick_event_callback(
+        desktop->view_dispatcher, desktop_tick_event_callback, 500);
+
+    view_dispatcher_set_event_callback_context(desktop->view_dispatcher, desktop);
+    view_dispatcher_set_custom_event_callback(
+        desktop->view_dispatcher, desktop_custom_event_callback);
+    view_dispatcher_set_navigation_event_callback(
+        desktop->view_dispatcher, desktop_back_event_callback);
+
+    desktop->lock_menu = desktop_lock_menu_alloc();
+    desktop->debug_view = desktop_debug_alloc();
+    desktop->hw_mismatch_popup = popup_alloc();
+    desktop->locked_view = desktop_view_locked_alloc();
+    desktop->pin_input_view = desktop_view_pin_input_alloc();
+    desktop->pin_timeout_view = desktop_view_pin_timeout_alloc();
+    desktop->slideshow_view = desktop_view_slideshow_alloc();
+
+    desktop->main_view_stack = view_stack_alloc();
+    desktop->main_view = desktop_main_alloc();
+    View* dolphin_view = animation_manager_get_animation_view(desktop->animation_manager);
+    view_stack_add_view(desktop->main_view_stack, desktop_main_get_view(desktop->main_view));
+    view_stack_add_view(desktop->main_view_stack, dolphin_view);
+    view_stack_add_view(
+        desktop->main_view_stack, desktop_view_locked_get_view(desktop->locked_view));
+
+    /* locked view (as animation view) attends in 2 scenes: main & locked,
+     * because it has to draw "Unlocked" label on main scene */
+    desktop->locked_view_stack = view_stack_alloc();
+    view_stack_add_view(desktop->locked_view_stack, dolphin_view);
+    view_stack_add_view(
+        desktop->locked_view_stack, desktop_view_locked_get_view(desktop->locked_view));
+
+    view_dispatcher_add_view(
+        desktop->view_dispatcher,
+        DesktopViewIdMain,
+        view_stack_get_view(desktop->main_view_stack));
+    view_dispatcher_add_view(
+        desktop->view_dispatcher,
+        DesktopViewIdLocked,
+        view_stack_get_view(desktop->locked_view_stack));
+    view_dispatcher_add_view(
+        desktop->view_dispatcher,
+        DesktopViewIdLockMenu,
+        desktop_lock_menu_get_view(desktop->lock_menu));
+    view_dispatcher_add_view(
+        desktop->view_dispatcher, DesktopViewIdDebug, desktop_debug_get_view(desktop->debug_view));
+    view_dispatcher_add_view(
+        desktop->view_dispatcher,
+        DesktopViewIdHwMismatch,
+        popup_get_view(desktop->hw_mismatch_popup));
+    view_dispatcher_add_view(
+        desktop->view_dispatcher,
+        DesktopViewIdPinTimeout,
+        desktop_view_pin_timeout_get_view(desktop->pin_timeout_view));
+    view_dispatcher_add_view(
+        desktop->view_dispatcher,
+        DesktopViewIdPinInput,
+        desktop_view_pin_input_get_view(desktop->pin_input_view));
+    view_dispatcher_add_view(
+        desktop->view_dispatcher,
+        DesktopViewIdSlideshow,
+        desktop_view_slideshow_get_view(desktop->slideshow_view));
+
+    // Lock icon
+    desktop->lock_viewport = view_port_alloc();
+    view_port_set_width(desktop->lock_viewport, icon_get_width(&I_Lock_8x8));
+    view_port_draw_callback_set(desktop->lock_viewport, desktop_lock_icon_callback, desktop);
+    view_port_enabled_set(desktop->lock_viewport, false);
+    gui_add_view_port(desktop->gui, desktop->lock_viewport, GuiLayerStatusBarLeft);
+
+    // Special case: autostart application is already running
+    desktop->loader = furi_record_open(RECORD_LOADER);
+    if(loader_is_locked(desktop->loader) &&
+       animation_manager_is_animation_loaded(desktop->animation_manager)) {
+        animation_manager_unload_and_stall_animation(desktop->animation_manager);
+    }
+
+    desktop->notification = furi_record_open(RECORD_NOTIFICATION);
+    desktop->app_start_stop_subscription = furi_pubsub_subscribe(
+        loader_get_pubsub(desktop->loader), desktop_loader_callback, desktop);
+
+    desktop->input_events_pubsub = furi_record_open(RECORD_INPUT_EVENTS);
+    desktop->input_events_subscription = NULL;
+
+    desktop->auto_lock_timer =
+        furi_timer_alloc(desktop_auto_lock_timer_callback, FuriTimerTypeOnce, desktop);
+
+    return desktop;
+}
+
+void desktop_free(Desktop* desktop) {
+    furi_assert(desktop);
+
+    furi_pubsub_unsubscribe(
+        loader_get_pubsub(desktop->loader), desktop->app_start_stop_subscription);
+
+    if(desktop->input_events_subscription) {
+        furi_pubsub_unsubscribe(desktop->input_events_pubsub, desktop->input_events_subscription);
+        desktop->input_events_subscription = NULL;
+    }
+
+    desktop->loader = NULL;
+    desktop->input_events_pubsub = NULL;
+    furi_record_close(RECORD_LOADER);
+    furi_record_close(RECORD_NOTIFICATION);
+    furi_record_close(RECORD_INPUT_EVENTS);
+
+    view_dispatcher_remove_view(desktop->view_dispatcher, DesktopViewIdMain);
+    view_dispatcher_remove_view(desktop->view_dispatcher, DesktopViewIdLockMenu);
+    view_dispatcher_remove_view(desktop->view_dispatcher, DesktopViewIdLocked);
+    view_dispatcher_remove_view(desktop->view_dispatcher, DesktopViewIdDebug);
+    view_dispatcher_remove_view(desktop->view_dispatcher, DesktopViewIdHwMismatch);
+    view_dispatcher_remove_view(desktop->view_dispatcher, DesktopViewIdPinInput);
+    view_dispatcher_remove_view(desktop->view_dispatcher, DesktopViewIdPinTimeout);
+
+    view_dispatcher_free(desktop->view_dispatcher);
+    scene_manager_free(desktop->scene_manager);
+
+    animation_manager_free(desktop->animation_manager);
+    view_stack_free(desktop->main_view_stack);
+    desktop_main_free(desktop->main_view);
+    view_stack_free(desktop->locked_view_stack);
+    desktop_view_locked_free(desktop->locked_view);
+    desktop_lock_menu_free(desktop->lock_menu);
+    desktop_view_locked_free(desktop->locked_view);
+    desktop_debug_free(desktop->debug_view);
+    popup_free(desktop->hw_mismatch_popup);
+    desktop_view_pin_timeout_free(desktop->pin_timeout_view);
+
+    furi_record_close(RECORD_GUI);
+    desktop->gui = NULL;
+
+    furi_thread_free(desktop->scene_thread);
+
+    furi_record_close("menu");
+
+    furi_timer_free(desktop->auto_lock_timer);
+
+    free(desktop);
+}
+
+static bool desktop_check_file_flag(const char* flag_path) {
+    Storage* storage = furi_record_open(RECORD_STORAGE);
+    bool exists = storage_common_stat(storage, flag_path, NULL) == FSE_OK;
+    furi_record_close(RECORD_STORAGE);
+
+    return exists;
+}
+
+int32_t desktop_srv(void* p) {
+    UNUSED(p);
+    Desktop* desktop = desktop_alloc();
+
+    bool loaded = LOAD_DESKTOP_SETTINGS(&desktop->settings);
+    if(!loaded) {
+        memset(&desktop->settings, 0, sizeof(desktop->settings));
+        SAVE_DESKTOP_SETTINGS(&desktop->settings);
+    }
+
+    scene_manager_next_scene(desktop->scene_manager, DesktopSceneMain);
+
+    desktop_pin_lock_init(&desktop->settings);
+
+    if(!desktop_pin_lock_is_locked()) {
+        if(!loader_is_locked(desktop->loader)) {
+            desktop_auto_lock_arm(desktop);
+        }
+    } else {
+        desktop_lock(desktop);
+    }
+
+    if(desktop_check_file_flag(SLIDESHOW_FS_PATH)) {
+        scene_manager_next_scene(desktop->scene_manager, DesktopSceneSlideshow);
+    }
+
+    if(!furi_hal_version_do_i_belong_here()) {
+        scene_manager_next_scene(desktop->scene_manager, DesktopSceneHwMismatch);
+    }
+
+    if(furi_hal_rtc_get_fault_data()) {
+        scene_manager_next_scene(desktop->scene_manager, DesktopSceneFault);
+    }
+
+    view_dispatcher_run(desktop->view_dispatcher);
+    desktop_free(desktop);
+
+    return 0;
+}

applications/services/desktop/desktop.h

@@ -0,0 +1,3 @@
+#pragma once
+
+typedef struct Desktop Desktop;

applications/services/desktop/desktop_i.h

@@ -0,0 +1,77 @@
+#pragma once
+
+#include "desktop.h"
+#include "animations/animation_manager.h"
+#include "views/desktop_view_pin_timeout.h"
+#include "views/desktop_view_pin_input.h"
+#include "views/desktop_view_locked.h"
+#include "views/desktop_view_main.h"
+#include "views/desktop_view_lock_menu.h"
+#include "views/desktop_view_debug.h"
+#include "views/desktop_view_slideshow.h"
+#include <desktop/desktop_settings.h>
+
+#include <furi.h>
+#include <gui/gui.h>
+#include <gui/view_stack.h>
+#include <gui/view_dispatcher.h>
+#include <gui/modules/popup.h>
+#include <gui/scene_manager.h>
+
+#include <loader/loader.h>
+#include <notification/notification_app.h>
+
+#define STATUS_BAR_Y_SHIFT 13
+
+typedef enum {
+    DesktopViewIdMain,
+    DesktopViewIdLockMenu,
+    DesktopViewIdLocked,
+    DesktopViewIdDebug,
+    DesktopViewIdHwMismatch,
+    DesktopViewIdPinInput,
+    DesktopViewIdPinTimeout,
+    DesktopViewIdSlideshow,
+    DesktopViewIdTotal,
+} DesktopViewId;
+
+struct Desktop {
+    // Scene
+    FuriThread* scene_thread;
+    // GUI
+    Gui* gui;
+    ViewDispatcher* view_dispatcher;
+    SceneManager* scene_manager;
+
+    Popup* hw_mismatch_popup;
+    DesktopLockMenuView* lock_menu;
+    DesktopDebugView* debug_view;
+    DesktopViewLocked* locked_view;
+    DesktopMainView* main_view;
+    DesktopViewPinTimeout* pin_timeout_view;
+    DesktopSlideshowView* slideshow_view;
+
+    ViewStack* main_view_stack;
+    ViewStack* locked_view_stack;
+
+    DesktopSettings settings;
+    DesktopViewPinInput* pin_input_view;
+
+    ViewPort* lock_viewport;
+
+    AnimationManager* animation_manager;
+
+    Loader* loader;
+    NotificationApp* notification;
+
+    FuriPubSubSubscription* app_start_stop_subscription;
+    FuriPubSub* input_events_pubsub;
+    FuriPubSubSubscription* input_events_subscription;
+    FuriTimer* auto_lock_timer;
+};
+
+Desktop* desktop_alloc();
+
+void desktop_free(Desktop* desktop);
+void desktop_lock(Desktop* desktop);
+void desktop_unlock(Desktop* desktop);

applications/services/desktop/desktop_settings.h

@@ -0,0 +1,49 @@
+#pragma once
+
+#include "desktop_settings_filename.h"
+
+#include <furi_hal.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <toolbox/saved_struct.h>
+#include <storage/storage.h>
+
+#define DESKTOP_SETTINGS_VER (4)
+
+#define DESKTOP_SETTINGS_PATH INT_PATH(DESKTOP_SETTINGS_FILE_NAME)
+#define DESKTOP_SETTINGS_MAGIC (0x17)
+#define PIN_MAX_LENGTH 12
+
+#define DESKTOP_SETTINGS_RUN_PIN_SETUP_ARG "run_pin_setup"
+
+#define SAVE_DESKTOP_SETTINGS(x) \
+    saved_struct_save(           \
+        DESKTOP_SETTINGS_PATH,   \
+        (x),                     \
+        sizeof(DesktopSettings), \
+        DESKTOP_SETTINGS_MAGIC,  \
+        DESKTOP_SETTINGS_VER)
+
+#define LOAD_DESKTOP_SETTINGS(x) \
+    saved_struct_load(           \
+        DESKTOP_SETTINGS_PATH,   \
+        (x),                     \
+        sizeof(DesktopSettings), \
+        DESKTOP_SETTINGS_MAGIC,  \
+        DESKTOP_SETTINGS_VER)
+
+#define MAX_PIN_SIZE 10
+#define MIN_PIN_SIZE 4
+
+typedef struct {
+    InputKey data[MAX_PIN_SIZE];
+    uint8_t length;
+} PinCode;
+
+typedef struct {
+    uint16_t favorite_primary;
+    uint16_t favorite_secondary;
+    PinCode pin_code;
+    uint8_t is_locked;
+    uint32_t auto_lock_delay_ms;
+} DesktopSettings;

applications/services/desktop/desktop_settings_filename.h

@@ -0,0 +1,3 @@
+#pragma once
+
+#define DESKTOP_SETTINGS_FILE_NAME ".desktop.settings"

applications/services/desktop/helpers/pin_lock.c

@@ -0,0 +1,140 @@
+
+#include <notification/notification.h>
+#include <notification/notification_messages.h>
+#include <stddef.h>
+#include <furi.h>
+#include <furi_hal.h>
+#include <gui/gui.h>
+
+#include "../helpers/pin_lock.h"
+#include "../desktop_i.h"
+#include <cli/cli.h>
+#include <cli/cli_vcp.h>
+
+static const NotificationSequence sequence_pin_fail = {
+    &message_display_backlight_on,
+
+    &message_red_255,
+    &message_vibro_on,
+    &message_delay_100,
+    &message_vibro_off,
+    &message_red_0,
+
+    &message_delay_250,
+
+    &message_red_255,
+    &message_vibro_on,
+    &message_delay_100,
+    &message_vibro_off,
+    &message_red_0,
+    NULL,
+};
+
+static const uint8_t desktop_helpers_fails_timeout[] = {
+    0,
+    0,
+    0,
+    0,
+    30,
+    60,
+    90,
+    120,
+    150,
+    180,
+    /* +60 for every next fail */
+};
+
+void desktop_pin_lock_error_notify() {
+    NotificationApp* notification = furi_record_open(RECORD_NOTIFICATION);
+    notification_message(notification, &sequence_pin_fail);
+    furi_record_close(RECORD_NOTIFICATION);
+}
+
+uint32_t desktop_pin_lock_get_fail_timeout() {
+    uint32_t pin_fails = furi_hal_rtc_get_pin_fails();
+    uint32_t pin_timeout = 0;
+    uint32_t max_index = COUNT_OF(desktop_helpers_fails_timeout) - 1;
+    if(pin_fails <= max_index) {
+        pin_timeout = desktop_helpers_fails_timeout[pin_fails];
+    } else {
+        pin_timeout = desktop_helpers_fails_timeout[max_index] + (pin_fails - max_index) * 60;
+    }
+
+    return pin_timeout;
+}
+
+void desktop_pin_lock(DesktopSettings* settings) {
+    furi_assert(settings);
+
+    furi_hal_rtc_set_pin_fails(0);
+    furi_hal_rtc_set_flag(FuriHalRtcFlagLock);
+    Cli* cli = furi_record_open(RECORD_CLI);
+    cli_session_close(cli);
+    furi_record_close(RECORD_CLI);
+    settings->is_locked = 1;
+    SAVE_DESKTOP_SETTINGS(settings);
+}
+
+void desktop_pin_unlock(DesktopSettings* settings) {
+    furi_assert(settings);
+
+    furi_hal_rtc_reset_flag(FuriHalRtcFlagLock);
+    Cli* cli = furi_record_open(RECORD_CLI);
+    cli_session_open(cli, &cli_vcp);
+    furi_record_close(RECORD_CLI);
+    settings->is_locked = 0;
+    SAVE_DESKTOP_SETTINGS(settings);
+}
+
+void desktop_pin_lock_init(DesktopSettings* settings) {
+    furi_assert(settings);
+
+    if(settings->pin_code.length > 0) {
+        if(settings->is_locked == 1) {
+            furi_hal_rtc_set_flag(FuriHalRtcFlagLock);
+        } else {
+            if(desktop_pin_lock_is_locked()) {
+                settings->is_locked = 1;
+                SAVE_DESKTOP_SETTINGS(settings);
+            }
+        }
+    } else {
+        furi_hal_rtc_set_pin_fails(0);
+        furi_hal_rtc_reset_flag(FuriHalRtcFlagLock);
+    }
+
+    if(desktop_pin_lock_is_locked()) {
+        Cli* cli = furi_record_open(RECORD_CLI);
+        cli_session_close(cli);
+        furi_record_close(RECORD_CLI);
+    }
+}
+
+bool desktop_pin_lock_verify(const PinCode* pin_set, const PinCode* pin_entered) {
+    bool result = false;
+    if(desktop_pins_are_equal(pin_set, pin_entered)) {
+        furi_hal_rtc_set_pin_fails(0);
+        result = true;
+    } else {
+        uint32_t pin_fails = furi_hal_rtc_get_pin_fails();
+        furi_hal_rtc_set_pin_fails(pin_fails + 1);
+        result = false;
+    }
+    return result;
+}
+
+bool desktop_pin_lock_is_locked() {
+    return furi_hal_rtc_is_flag_set(FuriHalRtcFlagLock);
+}
+
+bool desktop_pins_are_equal(const PinCode* pin_code1, const PinCode* pin_code2) {
+    furi_assert(pin_code1);
+    furi_assert(pin_code2);
+    bool result = false;
+
+    if(pin_code1->length == pin_code2->length) {
+        result = !memcmp(pin_code1->data, pin_code2->data, pin_code1->length);
+    }
+
+    return result;
+}

applications/services/desktop/helpers/pin_lock.h

@@ -0,0 +1,21 @@
+#pragma once
+#include <stdbool.h>
+#include <stdint.h>
+#include "../desktop.h"
+#include <desktop/desktop_settings.h>
+
+void desktop_pin_lock_error_notify();
+
+uint32_t desktop_pin_lock_get_fail_timeout();
+
+void desktop_pin_lock(DesktopSettings* settings);
+
+void desktop_pin_unlock(DesktopSettings* settings);
+
+bool desktop_pin_lock_is_locked();
+
+void desktop_pin_lock_init(DesktopSettings* settings);
+
+bool desktop_pin_lock_verify(const PinCode* pin_set, const PinCode* pin_entered);
+
+bool desktop_pins_are_equal(const PinCode* pin_code1, const PinCode* pin_code2);

applications/services/desktop/helpers/slideshow.c

@@ -0,0 +1,125 @@
+#include "slideshow.h"
+
+#include <stddef.h>
+#include <storage/storage.h>
+#include <gui/icon.h>
+#include <gui/icon_i.h>
+#include <core/dangerous_defines.h>
+
+#define SLIDESHOW_MAGIC 0x72676468
+#define SLIDESHOW_MAX_SUPPORTED_VERSION 1
+
+struct Slideshow {
+    Icon icon;
+    uint32_t current_frame;
+    bool loaded;
+};
+
+#pragma pack(push, 1)
+
+typedef struct {
+    uint32_t magic;
+    uint8_t version;
+    uint8_t width;
+    uint8_t height;
+    uint8_t frame_count;
+} SlideshowFileHeader;
+_Static_assert(sizeof(SlideshowFileHeader) == 8, "Incorrect SlideshowFileHeader size");
+
+typedef struct {
+    uint16_t size;
+} SlideshowFrameHeader;
+_Static_assert(sizeof(SlideshowFrameHeader) == 2, "Incorrect SlideshowFrameHeader size");
+
+#pragma pack(pop)
+
+Slideshow* slideshow_alloc() {
+    Slideshow* ret = malloc(sizeof(Slideshow));
+    ret->loaded = false;
+    return ret;
+}
+
+void slideshow_free(Slideshow* slideshow) {
+    Icon* icon = &slideshow->icon;
+    if(icon) {
+        for(int frame_idx = 0; frame_idx < icon->frame_count; ++frame_idx) {
+            uint8_t* frame_data = (uint8_t*)icon->frames[frame_idx];
+            free(frame_data);
+        }
+        free((uint8_t**)icon->frames);
+    }
+    free(slideshow);
+}
+
+bool slideshow_load(Slideshow* slideshow, const char* fspath) {
+    Storage* storage = furi_record_open(RECORD_STORAGE);
+    File* slideshow_file = storage_file_alloc(storage);
+    slideshow->loaded = false;
+    do {
+        if(!storage_file_open(slideshow_file, fspath, FSAM_READ, FSOM_OPEN_EXISTING)) {
+            break;
+        }
+        SlideshowFileHeader header;
+        if((storage_file_read(slideshow_file, &header, sizeof(header)) != sizeof(header)) ||
+           (header.magic != SLIDESHOW_MAGIC) ||
+           (header.version > SLIDESHOW_MAX_SUPPORTED_VERSION)) {
+            break;
+        }
+        Icon* icon = &slideshow->icon;
+        FURI_CONST_ASSIGN(icon->frame_count, header.frame_count);
+        FURI_CONST_ASSIGN(icon->width, header.width);
+        FURI_CONST_ASSIGN(icon->height, header.height);
+        icon->frames = malloc(header.frame_count * sizeof(uint8_t*));
+        for(int frame_idx = 0; frame_idx < header.frame_count; ++frame_idx) {
+            SlideshowFrameHeader frame_header;
+            if(storage_file_read(slideshow_file, &frame_header, sizeof(frame_header)) !=
+               sizeof(frame_header)) {
+                break;
+            }
+            FURI_CONST_ASSIGN_PTR(icon->frames[frame_idx], malloc(frame_header.size));
+            uint8_t* frame_data = (uint8_t*)icon->frames[frame_idx];
+            if(storage_file_read(slideshow_file, frame_data, frame_header.size) !=
+               frame_header.size) {
+                break;
+            }
+            slideshow->loaded = (frame_idx + 1) == header.frame_count;
+        }
+    } while(false);
+    storage_file_free(slideshow_file);
+    furi_record_close(RECORD_STORAGE);
+    return slideshow->loaded;
+}
+
+bool slideshow_is_loaded(Slideshow* slideshow) {
+    return slideshow->loaded;
+}
+
+bool slideshow_is_one_page(Slideshow* slideshow) {
+    return slideshow->loaded && (slideshow->icon.frame_count == 1);
+}
+
+bool slideshow_advance(Slideshow* slideshow) {
+    uint8_t next_frame = slideshow->current_frame + 1;
+    if(next_frame < slideshow->icon.frame_count) {
+        slideshow->current_frame = next_frame;
+        return true;
+    }
+    return false;
+}
+
+void slideshow_goback(Slideshow* slideshow) {
+    if(slideshow->current_frame > 0) {
+        slideshow->current_frame--;
+    }
+}
+
+void slideshow_draw(Slideshow* slideshow, Canvas* canvas, uint8_t x, uint8_t y) {
+    furi_assert(slideshow->current_frame < slideshow->icon.frame_count);
+    canvas_draw_bitmap(
+        canvas,
+        x,
+        y,
+        slideshow->icon.width,
+        slideshow->icon.height,
+        slideshow->icon.frames[slideshow->current_frame]);
+}

applications/services/desktop/helpers/slideshow.h

@@ -0,0 +1,15 @@
+#pragma once
+
+#include <gui/canvas.h>
+
+typedef struct Slideshow Slideshow;
+
+Slideshow* slideshow_alloc();
+
+void slideshow_free(Slideshow* slideshow);
+bool slideshow_load(Slideshow* slideshow, const char* fspath);
+bool slideshow_is_loaded(Slideshow* slideshow);
+bool slideshow_is_one_page(Slideshow* slideshow);
+void slideshow_goback(Slideshow* slideshow);
+bool slideshow_advance(Slideshow* slideshow);
+void slideshow_draw(Slideshow* slideshow, Canvas* canvas, uint8_t x, uint8_t y);

applications/services/desktop/helpers/slideshow_filename.h

@@ -0,0 +1,3 @@
+#pragma once
+
+#define SLIDESHOW_FILE_NAME ".slideshow"

applications/services/desktop/scenes/desktop_scene.c

@@ -0,0 +1,30 @@
+#include "desktop_scene.h"
+
+// Generate scene on_enter handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_enter,
+void (*const desktop_on_enter_handlers[])(void*) = {
+#include "desktop_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Generate scene on_event handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_event,
+bool (*const desktop_on_event_handlers[])(void* context, SceneManagerEvent event) = {
+#include "desktop_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Generate scene on_exit handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_exit,
+void (*const desktop_on_exit_handlers[])(void* context) = {
+#include "desktop_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Initialize scene handlers configuration structure
+const SceneManagerHandlers desktop_scene_handlers = {
+    .on_enter_handlers = desktop_on_enter_handlers,
+    .on_event_handlers = desktop_on_event_handlers,
+    .on_exit_handlers = desktop_on_exit_handlers,
+    .scene_num = DesktopSceneNum,
+};

applications/services/desktop/scenes/desktop_scene.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include <gui/scene_manager.h>
+
+// Generate scene id and total number
+#define ADD_SCENE(prefix, name, id) DesktopScene##id,
+typedef enum {
+#include "desktop_scene_config.h"
+    DesktopSceneNum,
+} DesktopScene;
+#undef ADD_SCENE
+
+extern const SceneManagerHandlers desktop_scene_handlers;
+
+// Generate scene on_enter handlers declaration
+#define ADD_SCENE(prefix, name, id) void prefix##_scene_##name##_on_enter(void*);
+#include "desktop_scene_config.h"
+#undef ADD_SCENE
+
+// Generate scene on_event handlers declaration
+#define ADD_SCENE(prefix, name, id) \
+    bool prefix##_scene_##name##_on_event(void* context, SceneManagerEvent event);
+#include "desktop_scene_config.h"
+#undef ADD_SCENE
+
+// Generate scene on_exit handlers declaration
+#define ADD_SCENE(prefix, name, id) void prefix##_scene_##name##_on_exit(void* context);
+#include "desktop_scene_config.h"
+#undef ADD_SCENE

applications/services/desktop/scenes/desktop_scene_config.h

@@ -0,0 +1,9 @@
+ADD_SCENE(desktop, main, Main)
+ADD_SCENE(desktop, lock_menu, LockMenu)
+ADD_SCENE(desktop, debug, Debug)
+ADD_SCENE(desktop, hw_mismatch, HwMismatch)
+ADD_SCENE(desktop, fault, Fault)
+ADD_SCENE(desktop, locked, Locked)
+ADD_SCENE(desktop, pin_input, PinInput)
+ADD_SCENE(desktop, pin_timeout, PinTimeout)
+ADD_SCENE(desktop, slideshow, Slideshow)

applications/services/desktop/scenes/desktop_scene_debug.c

@@ -0,0 +1,65 @@
+
+#include <dolphin/dolphin.h>
+#include <dolphin/helpers/dolphin_deed.h>
+
+#include "../desktop_i.h"
+#include "../views/desktop_view_debug.h"
+#include "desktop_scene.h"
+
+void desktop_scene_debug_callback(DesktopEvent event, void* context) {
+    Desktop* desktop = (Desktop*)context;
+    view_dispatcher_send_custom_event(desktop->view_dispatcher, event);
+}
+
+void desktop_scene_debug_on_enter(void* context) {
+    Desktop* desktop = (Desktop*)context;
+
+    desktop_debug_get_dolphin_data(desktop->debug_view);
+
+    desktop_debug_set_callback(desktop->debug_view, desktop_scene_debug_callback, desktop);
+    view_dispatcher_switch_to_view(desktop->view_dispatcher, DesktopViewIdDebug);
+}
+
+bool desktop_scene_debug_on_event(void* context, SceneManagerEvent event) {
+    Desktop* desktop = (Desktop*)context;
+    Dolphin* dolphin = furi_record_open(RECORD_DOLPHIN);
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        switch(event.event) {
+        case DesktopDebugEventExit:
+            scene_manager_next_scene(desktop->scene_manager, DesktopSceneMain);
+            dolphin_flush(dolphin);
+            consumed = true;
+            break;
+
+        case DesktopDebugEventDeed:
+            dolphin_deed(dolphin, DolphinDeedTestRight);
+            desktop_debug_get_dolphin_data(desktop->debug_view);
+            consumed = true;
+            break;
+
+        case DesktopDebugEventWrongDeed:
+            dolphin_deed(dolphin, DolphinDeedTestLeft);
+            desktop_debug_get_dolphin_data(desktop->debug_view);
+            consumed = true;
+            break;
+
+        case DesktopDebugEventSaveState:
+            dolphin_flush(dolphin);
+            consumed = true;
+            break;
+
+        default:
+            break;
+        }
+    }
+
+    furi_record_close(RECORD_DOLPHIN);
+    return consumed;
+}
+
+void desktop_scene_debug_on_exit(void* context) {
+    Desktop* desktop = (Desktop*)context;
+    desktop_debug_reset_screen_idx(desktop->debug_view);
+}

applications/services/desktop/scenes/desktop_scene_fault.c

@@ -0,0 +1,52 @@
+#include <furi_hal.h>
+
+#include "../desktop_i.h"
+
+#define DesktopFaultEventExit 0x00FF00FF
+
+void desktop_scene_fault_callback(void* context) {
+    Desktop* desktop = (Desktop*)context;
+    view_dispatcher_send_custom_event(desktop->view_dispatcher, DesktopFaultEventExit);
+}
+
+void desktop_scene_fault_on_enter(void* context) {
+    Desktop* desktop = (Desktop*)context;
+
+    Popup* popup = desktop->hw_mismatch_popup;
+    popup_set_context(popup, desktop);
+    popup_set_header(
+        popup,
+        "Flipper crashed\n and was rebooted",
+        60,
+        14 + STATUS_BAR_Y_SHIFT,
+        AlignCenter,
+        AlignCenter);
+
+    char* message = (char*)furi_hal_rtc_get_fault_data();
+    popup_set_text(popup, message, 60, 37 + STATUS_BAR_Y_SHIFT, AlignCenter, AlignCenter);
+    popup_set_callback(popup, desktop_scene_fault_callback);
+    view_dispatcher_switch_to_view(desktop->view_dispatcher, DesktopViewIdHwMismatch);
+}
+
+bool desktop_scene_fault_on_event(void* context, SceneManagerEvent event) {
+    Desktop* desktop = (Desktop*)context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        switch(event.event) {
+        case DesktopFaultEventExit:
+            scene_manager_previous_scene(desktop->scene_manager);
+            consumed = true;
+            break;
+        default:
+            break;
+        }
+    }
+
+    return consumed;
+}
+
+void desktop_scene_fault_on_exit(void* context) {
+    UNUSED(context);
+    furi_hal_rtc_set_fault_data(0);
+}

applications/services/desktop/scenes/desktop_scene_hw_mismatch.c

@@ -0,0 +1,67 @@
+#include <gui/scene_manager.h>
+#include <furi_hal.h>
+
+#include "desktop_scene.h"
+#include "../desktop_i.h"
+
+#define HW_MISMATCH_BACK_EVENT (0UL)
+
+void desktop_scene_hw_mismatch_callback(void* context) {
+    Desktop* desktop = (Desktop*)context;
+    view_dispatcher_send_custom_event(desktop->view_dispatcher, HW_MISMATCH_BACK_EVENT);
+}
+
+void desktop_scene_hw_mismatch_on_enter(void* context) {
+    Desktop* desktop = (Desktop*)context;
+    furi_assert(desktop);
+    Popup* popup = desktop->hw_mismatch_popup;
+
+    char* text_buffer = malloc(256);
+    scene_manager_set_scene_state(
+        desktop->scene_manager, DesktopSceneHwMismatch, (uint32_t)text_buffer);
+
+    snprintf(
+        text_buffer,
+        256,
+        "HW target: %d\nFW target: %d",
+        furi_hal_version_get_hw_target(),
+        version_get_target(NULL));
+    popup_set_context(popup, desktop);
+    popup_set_header(
+        popup, "!!!! HW Mismatch !!!!", 60, 14 + STATUS_BAR_Y_SHIFT, AlignCenter, AlignCenter);
+    popup_set_text(popup, text_buffer, 60, 37 + STATUS_BAR_Y_SHIFT, AlignCenter, AlignCenter);
+    popup_set_callback(popup, desktop_scene_hw_mismatch_callback);
+    view_dispatcher_switch_to_view(desktop->view_dispatcher, DesktopViewIdHwMismatch);
+}
+
+bool desktop_scene_hw_mismatch_on_event(void* context, SceneManagerEvent event) {
+    Desktop* desktop = (Desktop*)context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        switch(event.event) {
+        case HW_MISMATCH_BACK_EVENT:
+            scene_manager_previous_scene(desktop->scene_manager);
+            consumed = true;
+            break;
+
+        default:
+            break;
+        }
+    }
+    return consumed;
+}
+
+void desktop_scene_hw_mismatch_on_exit(void* context) {
+    Desktop* desktop = (Desktop*)context;
+    furi_assert(desktop);
+    Popup* popup = desktop->hw_mismatch_popup;
+    popup_set_header(popup, NULL, 0, 0, AlignCenter, AlignBottom);
+    popup_set_text(popup, NULL, 0, 0, AlignCenter, AlignTop);
+    popup_set_callback(popup, NULL);
+    popup_set_context(popup, NULL);
+    char* text_buffer =
+        (char*)scene_manager_get_scene_state(desktop->scene_manager, DesktopSceneHwMismatch);
+    free(text_buffer);
+    scene_manager_set_scene_state(desktop->scene_manager, DesktopSceneHwMismatch, 0);
+}

applications/services/desktop/scenes/desktop_scene_i.h

@@ -0,0 +1,4 @@
+#pragma once
+
+#define SCENE_LOCKED_FIRST_ENTER 0
+#define SCENE_LOCKED_REPEAT_ENTER 1

applications/services/desktop/scenes/desktop_scene_lock_menu.c

@@ -0,0 +1,85 @@
+#include <gui/scene_manager.h>
+#include <applications.h>
+#include <furi_hal.h>
+#include <toolbox/saved_struct.h>
+#include <stdbool.h>
+#include <loader/loader.h>
+
+#include "../desktop_i.h"
+#include <desktop/desktop_settings.h>
+#include "../views/desktop_view_lock_menu.h"
+#include "desktop_scene_i.h"
+#include "desktop_scene.h"
+#include "../helpers/pin_lock.h"
+
+#define TAG "DesktopSceneLock"
+
+void desktop_scene_lock_menu_callback(DesktopEvent event, void* context) {
+    Desktop* desktop = (Desktop*)context;
+    view_dispatcher_send_custom_event(desktop->view_dispatcher, event);
+}
+
+void desktop_scene_lock_menu_on_enter(void* context) {
+    Desktop* desktop = (Desktop*)context;
+
+    LOAD_DESKTOP_SETTINGS(&desktop->settings);
+    scene_manager_set_scene_state(desktop->scene_manager, DesktopSceneLockMenu, 0);
+    desktop_lock_menu_set_callback(desktop->lock_menu, desktop_scene_lock_menu_callback, desktop);
+    desktop_lock_menu_pin_set(desktop->lock_menu, desktop->settings.pin_code.length > 0);
+    desktop_lock_menu_set_idx(desktop->lock_menu, 0);
+
+    view_dispatcher_switch_to_view(desktop->view_dispatcher, DesktopViewIdLockMenu);
+}
+
+bool desktop_scene_lock_menu_on_event(void* context, SceneManagerEvent event) {
+    Desktop* desktop = (Desktop*)context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeTick) {
+        bool check_pin_changed =
+            scene_manager_get_scene_state(desktop->scene_manager, DesktopSceneLockMenu);
+        if(check_pin_changed) {
+            LOAD_DESKTOP_SETTINGS(&desktop->settings);
+            if(desktop->settings.pin_code.length > 0) {
+                desktop_lock_menu_pin_set(desktop->lock_menu, 1);
+                scene_manager_set_scene_state(desktop->scene_manager, DesktopSceneLockMenu, 0);
+            }
+        }
+    } else if(event.type == SceneManagerEventTypeCustom) {
+        switch(event.event) {
+        case DesktopLockMenuEventLock:
+            scene_manager_set_scene_state(desktop->scene_manager, DesktopSceneLockMenu, 0);
+            desktop_lock(desktop);
+            consumed = true;
+            break;
+        case DesktopLockMenuEventPinLock:
+            if(desktop->settings.pin_code.length > 0) {
+                desktop_pin_lock(&desktop->settings);
+                desktop_lock(desktop);
+            } else {
+                LoaderStatus status =
+                    loader_start(desktop->loader, "Desktop", DESKTOP_SETTINGS_RUN_PIN_SETUP_ARG);
+                if(status == LoaderStatusOk) {
+                    scene_manager_set_scene_state(desktop->scene_manager, DesktopSceneLockMenu, 1);
+                } else {
+                    FURI_LOG_E(TAG, "Unable to start desktop settings");
+                }
+            }
+            consumed = true;
+            break;
+        case DesktopLockMenuEventExit:
+            scene_manager_set_scene_state(desktop->scene_manager, DesktopSceneLockMenu, 0);
+            scene_manager_search_and_switch_to_previous_scene(
+                desktop->scene_manager, DesktopSceneMain);
+            consumed = true;
+            break;
+        default:
+            break;
+        }
+    }
+    return consumed;
+}
+
+void desktop_scene_lock_menu_on_exit(void* context) {
+    UNUSED(context);
+}

applications/services/desktop/scenes/desktop_scene_locked.c

@@ -0,0 +1,113 @@
+#include <furi.h>
+#include <furi_hal.h>
+#include <gui/scene_manager.h>
+#include <gui/view_stack.h>
+#include <stdint.h>
+#include <portmacro.h>
+
+#include "../desktop.h"
+#include "../desktop_i.h"
+#include "../helpers/pin_lock.h"
+#include "../animations/animation_manager.h"
+#include "../views/desktop_events.h"
+#include "../views/desktop_view_pin_input.h"
+#include "../views/desktop_view_locked.h"
+#include "desktop_scene.h"
+#include "desktop_scene_i.h"
+
+#define WRONG_PIN_HEADER_TIMEOUT 3000
+#define INPUT_PIN_VIEW_TIMEOUT 15000
+
+static void desktop_scene_locked_callback(DesktopEvent event, void* context) {
+    Desktop* desktop = (Desktop*)context;
+    view_dispatcher_send_custom_event(desktop->view_dispatcher, event);
+}
+
+static void desktop_scene_locked_new_idle_animation_callback(void* context) {
+    furi_assert(context);
+    Desktop* desktop = context;
+    view_dispatcher_send_custom_event(
+        desktop->view_dispatcher, DesktopAnimationEventNewIdleAnimation);
+}
+
+void desktop_scene_locked_on_enter(void* context) {
+    Desktop* desktop = (Desktop*)context;
+
+    // callbacks for 1-st layer
+    animation_manager_set_new_idle_callback(
+        desktop->animation_manager, desktop_scene_locked_new_idle_animation_callback);
+    animation_manager_set_check_callback(desktop->animation_manager, NULL);
+    animation_manager_set_interact_callback(desktop->animation_manager, NULL);
+
+    // callbacks for 2-nd layer
+    desktop_view_locked_set_callback(desktop->locked_view, desktop_scene_locked_callback, desktop);
+
+    bool switch_to_timeout_scene = false;
+    uint32_t state = scene_manager_get_scene_state(desktop->scene_manager, DesktopSceneLocked);
+    if(state == SCENE_LOCKED_FIRST_ENTER) {
+        bool pin_locked = desktop_pin_lock_is_locked();
+        view_port_enabled_set(desktop->lock_viewport, true);
+        Gui* gui = furi_record_open(RECORD_GUI);
+        gui_set_lockdown(gui, true);
+        furi_record_close(RECORD_GUI);
+
+        if(pin_locked) {
+            LOAD_DESKTOP_SETTINGS(&desktop->settings);
+            desktop_view_locked_lock(desktop->locked_view, true);
+            uint32_t pin_timeout = desktop_pin_lock_get_fail_timeout();
+            if(pin_timeout > 0) {
+                scene_manager_set_scene_state(
+                    desktop->scene_manager, DesktopScenePinTimeout, pin_timeout);
+                switch_to_timeout_scene = true;
+            } else {
+                desktop_view_locked_close_doors(desktop->locked_view);
+            }
+        } else {
+            desktop_view_locked_lock(desktop->locked_view, false);
+            desktop_view_locked_close_doors(desktop->locked_view);
+        }
+        scene_manager_set_scene_state(
+            desktop->scene_manager, DesktopSceneLocked, SCENE_LOCKED_REPEAT_ENTER);
+    }
+
+    if(switch_to_timeout_scene) {
+        scene_manager_next_scene(desktop->scene_manager, DesktopScenePinTimeout);
+    } else {
+        view_dispatcher_switch_to_view(desktop->view_dispatcher, DesktopViewIdLocked);
+    }
+}
+
+bool desktop_scene_locked_on_event(void* context, SceneManagerEvent event) {
+    Desktop* desktop = (Desktop*)context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        switch(event.event) {
+        case DesktopLockedEventUnlocked:
+            desktop_unlock(desktop);
+            consumed = true;
+            break;
+        case DesktopLockedEventUpdate:
+            if(desktop_view_locked_is_locked_hint_visible(desktop->locked_view)) {
+                notification_message(desktop->notification, &sequence_display_backlight_off);
+            }
+            desktop_view_locked_update(desktop->locked_view);
+            consumed = true;
+            break;
+        case DesktopLockedEventShowPinInput:
+            scene_manager_next_scene(desktop->scene_manager, DesktopScenePinInput);
+            consumed = true;
+            break;
+        case DesktopAnimationEventNewIdleAnimation:
+            animation_manager_new_idle_process(desktop->animation_manager);
+            consumed = true;
+            break;
+        }
+    }
+
+    return consumed;
+}
+
+void desktop_scene_locked_on_exit(void* context) {
+    UNUSED(context);
+}

applications/services/desktop/scenes/desktop_scene_main.c

@@ -0,0 +1,180 @@
+#include <furi.h>
+#include <furi_hal.h>
+#include <applications.h>
+#include <assets_icons.h>
+#include <loader/loader.h>
+
+#include "../desktop_i.h"
+#include "../views/desktop_events.h"
+#include "../views/desktop_view_main.h"
+#include "desktop_scene.h"
+#include "desktop_scene_i.h"
+
+#define TAG "DesktopSrv"
+
+static void desktop_scene_main_new_idle_animation_callback(void* context) {
+    furi_assert(context);
+    Desktop* desktop = context;
+    view_dispatcher_send_custom_event(
+        desktop->view_dispatcher, DesktopAnimationEventNewIdleAnimation);
+}
+
+static void desktop_scene_main_check_animation_callback(void* context) {
+    furi_assert(context);
+    Desktop* desktop = context;
+    view_dispatcher_send_custom_event(
+        desktop->view_dispatcher, DesktopAnimationEventCheckAnimation);
+}
+
+static void desktop_scene_main_interact_animation_callback(void* context) {
+    furi_assert(context);
+    Desktop* desktop = context;
+    view_dispatcher_send_custom_event(
+        desktop->view_dispatcher, DesktopAnimationEventInteractAnimation);
+}
+
+#ifdef APP_ARCHIVE
+static void desktop_switch_to_app(Desktop* desktop, const FlipperApplication* flipper_app) {
+    furi_assert(desktop);
+    furi_assert(flipper_app);
+    furi_assert(flipper_app->app);
+    furi_assert(flipper_app->name);
+
+    if(furi_thread_get_state(desktop->scene_thread) != FuriThreadStateStopped) {
+        FURI_LOG_E("Desktop", "Thread is already running");
+        return;
+    }
+
+    furi_thread_set_name(desktop->scene_thread, flipper_app->name);
+    furi_thread_set_stack_size(desktop->scene_thread, flipper_app->stack_size);
+    furi_thread_set_callback(desktop->scene_thread, flipper_app->app);
+
+    furi_thread_start(desktop->scene_thread);
+}
+#endif
+
+void desktop_scene_main_callback(DesktopEvent event, void* context) {
+    Desktop* desktop = (Desktop*)context;
+    view_dispatcher_send_custom_event(desktop->view_dispatcher, event);
+}
+
+void desktop_scene_main_on_enter(void* context) {
+    Desktop* desktop = (Desktop*)context;
+    DesktopMainView* main_view = desktop->main_view;
+
+    animation_manager_set_context(desktop->animation_manager, desktop);
+    animation_manager_set_new_idle_callback(
+        desktop->animation_manager, desktop_scene_main_new_idle_animation_callback);
+    animation_manager_set_check_callback(
+        desktop->animation_manager, desktop_scene_main_check_animation_callback);
+    animation_manager_set_interact_callback(
+        desktop->animation_manager, desktop_scene_main_interact_animation_callback);
+
+    desktop_main_set_callback(main_view, desktop_scene_main_callback, desktop);
+
+    view_dispatcher_switch_to_view(desktop->view_dispatcher, DesktopViewIdMain);
+}
+
+bool desktop_scene_main_on_event(void* context, SceneManagerEvent event) {
+    Desktop* desktop = (Desktop*)context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        switch(event.event) {
+        case DesktopMainEventOpenMenu:
+            loader_show_menu();
+            consumed = true;
+            break;
+
+        case DesktopMainEventOpenLockMenu:
+            scene_manager_next_scene(desktop->scene_manager, DesktopSceneLockMenu);
+            consumed = true;
+            break;
+
+        case DesktopMainEventOpenDebug:
+            scene_manager_next_scene(desktop->scene_manager, DesktopSceneDebug);
+            consumed = true;
+            break;
+
+        case DesktopMainEventOpenArchive:
+#ifdef APP_ARCHIVE
+            desktop_switch_to_app(desktop, &FLIPPER_ARCHIVE);
+#endif
+            consumed = true;
+            break;
+
+        case DesktopMainEventOpenPowerOff: {
+            LoaderStatus status = loader_start(desktop->loader, "Power", "off");
+            if(status != LoaderStatusOk) {
+                FURI_LOG_E(TAG, "loader_start failed: %d", status);
+            }
+            consumed = true;
+            break;
+        }
+
+        case DesktopMainEventOpenFavoritePrimary:
+            LOAD_DESKTOP_SETTINGS(&desktop->settings);
+            if(desktop->settings.favorite_primary < FLIPPER_APPS_COUNT) {
+                LoaderStatus status = loader_start(
+                    desktop->loader, FLIPPER_APPS[desktop->settings.favorite_primary].name, NULL);
+                if(status != LoaderStatusOk) {
+                    FURI_LOG_E(TAG, "loader_start failed: %d", status);
+                }
+            } else {
+                FURI_LOG_E(TAG, "Can't find primary favorite application");
+            }
+            consumed = true;
+            break;
+        case DesktopMainEventOpenFavoriteSecondary:
+            LOAD_DESKTOP_SETTINGS(&desktop->settings);
+            if(desktop->settings.favorite_secondary < FLIPPER_APPS_COUNT) {
+                LoaderStatus status = loader_start(
+                    desktop->loader,
+                    FLIPPER_APPS[desktop->settings.favorite_secondary].name,
+                    NULL);
+                if(status != LoaderStatusOk) {
+                    FURI_LOG_E(TAG, "loader_start failed: %d", status);
+                }
+            } else {
+                FURI_LOG_E(TAG, "Can't find secondary favorite application");
+            }
+            consumed = true;
+            break;
+        case DesktopAnimationEventCheckAnimation:
+            animation_manager_check_blocking_process(desktop->animation_manager);
+            consumed = true;
+            break;
+        case DesktopAnimationEventNewIdleAnimation:
+            animation_manager_new_idle_process(desktop->animation_manager);
+            consumed = true;
+            break;
+        case DesktopAnimationEventInteractAnimation:
+            if(!animation_manager_interact_process(desktop->animation_manager)) {
+                LoaderStatus status = loader_start(desktop->loader, "Passport", NULL);
+                if(status != LoaderStatusOk) {
+                    FURI_LOG_E(TAG, "loader_start failed: %d", status);
+                }
+            }
+            consumed = true;
+            break;
+        case DesktopLockedEventUpdate:
+            desktop_view_locked_update(desktop->locked_view);
+            consumed = true;
+            break;
+
+        default:
+            break;
+        }
+    }
+
+    return consumed;
+}
+
+void desktop_scene_main_on_exit(void* context) {
+    Desktop* desktop = (Desktop*)context;
+
+    animation_manager_set_new_idle_callback(desktop->animation_manager, NULL);
+    animation_manager_set_check_callback(desktop->animation_manager, NULL);
+    animation_manager_set_interact_callback(desktop->animation_manager, NULL);
+    animation_manager_set_context(desktop->animation_manager, desktop);
+}

applications/services/desktop/scenes/desktop_scene_pin_input.c

@@ -0,0 +1,157 @@
+#include <furi.h>
+#include <furi_hal.h>
+#include <gui/scene_manager.h>
+#include <gui/view_stack.h>
+#include <stdint.h>
+#include <portmacro.h>
+#include <notification/notification.h>
+#include <notification/notification_messages.h>
+
+#include "../desktop.h"
+#include "../desktop_i.h"
+#include "../animations/animation_manager.h"
+#include "../views/desktop_events.h"
+#include "../views/desktop_view_pin_input.h"
+#include "../helpers/pin_lock.h"
+#include "desktop_scene.h"
+#include "desktop_scene_i.h"
+
+#define WRONG_PIN_HEADER_TIMEOUT 3000
+#define INPUT_PIN_VIEW_TIMEOUT 15000
+
+typedef struct {
+    TimerHandle_t timer;
+} DesktopScenePinInputState;
+
+static void desktop_scene_locked_light_red(bool value) {
+    NotificationApp* app = furi_record_open(RECORD_NOTIFICATION);
+    if(value) {
+        notification_message(app, &sequence_set_only_red_255);
+    } else {
+        notification_message(app, &sequence_reset_red);
+    }
+    furi_record_close(RECORD_NOTIFICATION);
+}
+
+static void
+    desktop_scene_pin_input_set_timer(Desktop* desktop, bool enable, TickType_t new_period) {
+    furi_assert(desktop);
+
+    DesktopScenePinInputState* state = (DesktopScenePinInputState*)scene_manager_get_scene_state(
+        desktop->scene_manager, DesktopScenePinInput);
+    furi_assert(state);
+    if(enable) {
+        xTimerChangePeriod(state->timer, new_period, portMAX_DELAY);
+    } else {
+        xTimerStop(state->timer, portMAX_DELAY);
+    }
+}
+
+static void desktop_scene_pin_input_back_callback(void* context) {
+    Desktop* desktop = (Desktop*)context;
+    view_dispatcher_send_custom_event(desktop->view_dispatcher, DesktopPinInputEventBack);
+}
+
+static void desktop_scene_pin_input_done_callback(const PinCode* pin_code, void* context) {
+    Desktop* desktop = (Desktop*)context;
+    if(desktop_pin_lock_verify(&desktop->settings.pin_code, pin_code)) {
+        view_dispatcher_send_custom_event(desktop->view_dispatcher, DesktopPinInputEventUnlocked);
+    } else {
+        view_dispatcher_send_custom_event(
+            desktop->view_dispatcher, DesktopPinInputEventUnlockFailed);
+    }
+}
+
+static void desktop_scene_pin_input_timer_callback(TimerHandle_t timer) {
+    Desktop* desktop = pvTimerGetTimerID(timer);
+
+    view_dispatcher_send_custom_event(
+        desktop->view_dispatcher, DesktopPinInputEventResetWrongPinLabel);
+}
+
+void desktop_scene_pin_input_on_enter(void* context) {
+    Desktop* desktop = (Desktop*)context;
+
+    desktop_view_pin_input_set_context(desktop->pin_input_view, desktop);
+    desktop_view_pin_input_set_back_callback(
+        desktop->pin_input_view, desktop_scene_pin_input_back_callback);
+    desktop_view_pin_input_set_timeout_callback(
+        desktop->pin_input_view, desktop_scene_pin_input_back_callback);
+    desktop_view_pin_input_set_done_callback(
+        desktop->pin_input_view, desktop_scene_pin_input_done_callback);
+
+    DesktopScenePinInputState* state = malloc(sizeof(DesktopScenePinInputState));
+    state->timer =
+        xTimerCreate(NULL, 10000, pdFALSE, desktop, desktop_scene_pin_input_timer_callback);
+    scene_manager_set_scene_state(desktop->scene_manager, DesktopScenePinInput, (uint32_t)state);
+
+    desktop_view_pin_input_hide_pin(desktop->pin_input_view, true);
+    desktop_view_pin_input_set_label_button(desktop->pin_input_view, "OK");
+    desktop_view_pin_input_set_label_secondary(desktop->pin_input_view, 44, 25, "Enter PIN:");
+    desktop_view_pin_input_set_pin_position(desktop->pin_input_view, 64, 37);
+    desktop_view_pin_input_reset_pin(desktop->pin_input_view);
+
+    view_dispatcher_switch_to_view(desktop->view_dispatcher, DesktopViewIdPinInput);
+}
+
+bool desktop_scene_pin_input_on_event(void* context, SceneManagerEvent event) {
+    Desktop* desktop = (Desktop*)context;
+    bool consumed = false;
+    uint32_t pin_timeout = 0;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        switch(event.event) {
+        case DesktopPinInputEventUnlockFailed:
+            pin_timeout = desktop_pin_lock_get_fail_timeout();
+            if(pin_timeout > 0) {
+                desktop_pin_lock_error_notify();
+                scene_manager_set_scene_state(
+                    desktop->scene_manager, DesktopScenePinTimeout, pin_timeout);
+                scene_manager_next_scene(desktop->scene_manager, DesktopScenePinTimeout);
+            } else {
+                desktop_scene_locked_light_red(true);
+                desktop_view_pin_input_set_label_primary(desktop->pin_input_view, 0, 0, NULL);
+                desktop_view_pin_input_set_label_secondary(
+                    desktop->pin_input_view, 25, 25, "Wrong PIN try again:");
+                desktop_scene_pin_input_set_timer(desktop, true, WRONG_PIN_HEADER_TIMEOUT);
+                desktop_view_pin_input_reset_pin(desktop->pin_input_view);
+            }
+            consumed = true;
+            break;
+        case DesktopPinInputEventResetWrongPinLabel:
+            desktop_scene_locked_light_red(false);
+            desktop_view_pin_input_set_label_primary(desktop->pin_input_view, 0, 0, NULL);
+            desktop_view_pin_input_set_label_secondary(
+                desktop->pin_input_view, 44, 25, "Enter PIN:");
+            consumed = true;
+            break;
+        case DesktopPinInputEventUnlocked:
+            desktop_pin_unlock(&desktop->settings);
+            desktop_unlock(desktop);
+            consumed = true;
+            break;
+        case DesktopPinInputEventBack:
+            scene_manager_search_and_switch_to_previous_scene(
+                desktop->scene_manager, DesktopSceneLocked);
+            notification_message(desktop->notification, &sequence_display_backlight_off);
+            consumed = true;
+            break;
+        }
+    }
+
+    return consumed;
+}
+
+void desktop_scene_pin_input_on_exit(void* context) {
+    Desktop* desktop = (Desktop*)context;
+    desktop_scene_locked_light_red(false);
+
+    DesktopScenePinInputState* state = (DesktopScenePinInputState*)scene_manager_get_scene_state(
+        desktop->scene_manager, DesktopScenePinInput);
+    xTimerStop(state->timer, portMAX_DELAY);
+    while(xTimerIsTimerActive(state->timer)) {
+        furi_delay_tick(1);
+    }
+    xTimerDelete(state->timer, portMAX_DELAY);
+    free(state);
+}

applications/services/desktop/scenes/desktop_scene_pin_timeout.c

@@ -0,0 +1,47 @@
+#include <furi.h>
+#include <FreeRTOS.h>
+#include <portmacro.h>
+#include <timer.h>
+#include <gui/scene_manager.h>
+
+#include "../desktop_i.h"
+#include "../views/desktop_view_pin_timeout.h"
+#include "desktop_scene.h"
+#include "desktop_scene_i.h"
+
+static void desktop_scene_pin_timeout_callback(void* context) {
+    Desktop* desktop = (Desktop*)context;
+    view_dispatcher_send_custom_event(desktop->view_dispatcher, DesktopPinTimeoutExit);
+}
+
+void desktop_scene_pin_timeout_on_enter(void* context) {
+    Desktop* desktop = (Desktop*)context;
+
+    uint32_t timeout =
+        scene_manager_get_scene_state(desktop->scene_manager, DesktopScenePinTimeout);
+    desktop_view_pin_timeout_start(desktop->pin_timeout_view, timeout);
+    desktop_view_pin_timeout_set_callback(
+        desktop->pin_timeout_view, desktop_scene_pin_timeout_callback, desktop);
+
+    view_dispatcher_switch_to_view(desktop->view_dispatcher, DesktopViewIdPinTimeout);
+}
+
+bool desktop_scene_pin_timeout_on_event(void* context, SceneManagerEvent event) {
+    Desktop* desktop = (Desktop*)context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        switch(event.event) {
+        case DesktopPinTimeoutExit:
+            scene_manager_previous_scene(desktop->scene_manager);
+            consumed = true;
+            break;
+        }
+    }
+
+    return consumed;
+}
+
+void desktop_scene_pin_timeout_on_exit(void* context) {
+    UNUSED(context);
+}

applications/services/desktop/scenes/desktop_scene_slideshow.c

@@ -0,0 +1,53 @@
+#include <storage/storage.h>
+
+#include "../desktop_i.h"
+#include "../views/desktop_view_slideshow.h"
+#include "../views/desktop_events.h"
+#include <power/power_service/power.h>
+
+void desktop_scene_slideshow_callback(DesktopEvent event, void* context) {
+    Desktop* desktop = (Desktop*)context;
+    view_dispatcher_send_custom_event(desktop->view_dispatcher, event);
+}
+
+void desktop_scene_slideshow_on_enter(void* context) {
+    Desktop* desktop = (Desktop*)context;
+    DesktopSlideshowView* slideshow_view = desktop->slideshow_view;
+
+    desktop_view_slideshow_set_callback(slideshow_view, desktop_scene_slideshow_callback, desktop);
+
+    view_dispatcher_switch_to_view(desktop->view_dispatcher, DesktopViewIdSlideshow);
+}
+
+bool desktop_scene_slideshow_on_event(void* context, SceneManagerEvent event) {
+    Desktop* desktop = (Desktop*)context;
+    bool consumed = false;
+    Storage* storage = NULL;
+    Power* power = NULL;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        switch(event.event) {
+        case DesktopSlideshowCompleted:
+            storage = furi_record_open(RECORD_STORAGE);
+            storage_common_remove(storage, SLIDESHOW_FS_PATH);
+            furi_record_close(RECORD_STORAGE);
+            scene_manager_previous_scene(desktop->scene_manager);
+            consumed = true;
+            break;
+        case DesktopSlideshowPoweroff:
+            power = furi_record_open(RECORD_POWER);
+            power_off(power);
+            furi_record_close(RECORD_POWER);
+            consumed = true;
+            break;
+
+        default:
+            break;
+        }
+    }
+    return consumed;
+}
+
+void desktop_scene_slideshow_on_exit(void* context) {
+    UNUSED(context);
+}

applications/services/desktop/views/desktop_events.h

@@ -0,0 +1,44 @@
+#pragma once
+
+typedef enum {
+    DesktopMainEventOpenLockMenu,
+    DesktopMainEventOpenArchive,
+    DesktopMainEventOpenFavoritePrimary,
+    DesktopMainEventOpenFavoriteSecondary,
+    DesktopMainEventOpenMenu,
+    DesktopMainEventOpenDebug,
+    DesktopMainEventOpenPassport, /**< Broken, don't use it */
+    DesktopMainEventOpenPowerOff,
+
+    DesktopLockedEventUnlocked,
+    DesktopLockedEventUpdate,
+    DesktopLockedEventShowPinInput,
+
+    DesktopPinInputEventResetWrongPinLabel,
+    DesktopPinInputEventUnlocked,
+    DesktopPinInputEventUnlockFailed,
+    DesktopPinInputEventBack,
+
+    DesktopPinTimeoutExit,
+
+    DesktopDebugEventDeed,
+    DesktopDebugEventWrongDeed,
+    DesktopDebugEventSaveState,
+    DesktopDebugEventExit,
+
+    DesktopLockMenuEventLock,
+    DesktopLockMenuEventPinLock,
+    DesktopLockMenuEventExit,
+
+    DesktopAnimationEventCheckAnimation,
+    DesktopAnimationEventNewIdleAnimation,
+    DesktopAnimationEventInteractAnimation,
+
+    DesktopSlideshowCompleted,
+    DesktopSlideshowPoweroff,
+
+    // Global events
+    DesktopGlobalBeforeAppStarted,
+    DesktopGlobalAfterAppFinished,
+    DesktopGlobalAutoLock,
+} DesktopEvent;

applications/services/desktop/views/desktop_view_debug.c

@@ -0,0 +1,200 @@
+#include <toolbox/version.h>
+#include <furi.h>
+#include <furi_hal.h>
+#include <dolphin/helpers/dolphin_state.h>
+#include <dolphin/dolphin.h>
+
+#include "../desktop_i.h"
+#include "desktop_view_debug.h"
+
+void desktop_debug_set_callback(
+    DesktopDebugView* debug_view,
+    DesktopDebugViewCallback callback,
+    void* context) {
+    furi_assert(debug_view);
+    furi_assert(callback);
+    debug_view->callback = callback;
+    debug_view->context = context;
+}
+
+void desktop_debug_render(Canvas* canvas, void* model) {
+    canvas_clear(canvas);
+    DesktopDebugViewModel* m = model;
+    const Version* ver;
+    char buffer[64];
+
+    static const char* headers[] = {"Device Info:", "Dolphin Info:"};
+
+    canvas_set_color(canvas, ColorBlack);
+    canvas_set_font(canvas, FontPrimary);
+    canvas_draw_str_aligned(
+        canvas, 64, 1 + STATUS_BAR_Y_SHIFT, AlignCenter, AlignTop, headers[m->screen]);
+    canvas_set_font(canvas, FontSecondary);
+
+    if(m->screen != DesktopViewStatsMeta) {
+        // Hardware version
+        const char* my_name = furi_hal_version_get_name_ptr();
+        snprintf(
+            buffer,
+            sizeof(buffer),
+            "%d.F%dB%dC%d %s:%s %s",
+            furi_hal_version_get_hw_version(),
+            furi_hal_version_get_hw_target(),
+            furi_hal_version_get_hw_body(),
+            furi_hal_version_get_hw_connect(),
+            furi_hal_version_get_hw_region_name(),
+            furi_hal_region_get_name(),
+            my_name ? my_name : "Unknown");
+        canvas_draw_str(canvas, 0, 19 + STATUS_BAR_Y_SHIFT, buffer);
+
+        ver = furi_hal_version_get_firmware_version();
+        const BleGlueC2Info* c2_ver = NULL;
+#ifdef SRV_BT
+        c2_ver = ble_glue_get_c2_info();
+#endif
+        if(!ver) {
+            canvas_draw_str(canvas, 0, 30 + STATUS_BAR_Y_SHIFT, "No info");
+            return;
+        }
+
+        snprintf(
+            buffer,
+            sizeof(buffer),
+            "%s [%s]",
+            version_get_version(ver),
+            version_get_builddate(ver));
+        canvas_draw_str(canvas, 0, 30 + STATUS_BAR_Y_SHIFT, buffer);
+
+        snprintf(
+            buffer,
+            sizeof(buffer),
+            "%s%s [%s] %s",
+            version_get_dirty_flag(ver) ? "[!] " : "",
+            version_get_githash(ver),
+            version_get_gitbranchnum(ver),
+            c2_ver ? c2_ver->StackTypeString : "<none>");
+        canvas_draw_str(canvas, 0, 40 + STATUS_BAR_Y_SHIFT, buffer);
+
+        snprintf(
+            buffer, sizeof(buffer), "[%d] %s", version_get_target(ver), version_get_gitbranch(ver));
+        canvas_draw_str(canvas, 0, 50 + STATUS_BAR_Y_SHIFT, buffer);
+
+    } else {
+        Dolphin* dolphin = furi_record_open(RECORD_DOLPHIN);
+        DolphinStats stats = dolphin_stats(dolphin);
+        furi_record_close(RECORD_DOLPHIN);
+
+        uint32_t current_lvl = stats.level;
+        uint32_t remaining = dolphin_state_xp_to_levelup(m->icounter);
+
+        canvas_set_font(canvas, FontSecondary);
+        snprintf(buffer, sizeof(buffer), "Icounter: %ld  Butthurt %ld", m->icounter, m->butthurt);
+        canvas_draw_str(canvas, 5, 19 + STATUS_BAR_Y_SHIFT, buffer);
+
+        snprintf(
+            buffer,
+            sizeof(buffer),
+            "Level: %ld  To level up: %ld",
+            current_lvl,
+            (remaining == (uint32_t)(-1) ? remaining : 0));
+        canvas_draw_str(canvas, 5, 29 + STATUS_BAR_Y_SHIFT, buffer);
+
+        // even if timestamp is uint64_t, it's safe to cast it to uint32_t, because furi_hal_rtc_datetime_to_timestamp only returns uint32_t
+        snprintf(buffer, sizeof(buffer), "%ld", (uint32_t)m->timestamp);
+
+        canvas_draw_str(canvas, 5, 39 + STATUS_BAR_Y_SHIFT, buffer);
+        canvas_draw_str(canvas, 0, 49 + STATUS_BAR_Y_SHIFT, "[< >] icounter value   [ok] save");
+    }
+}
+
+View* desktop_debug_get_view(DesktopDebugView* debug_view) {
+    furi_assert(debug_view);
+    return debug_view->view;
+}
+
+bool desktop_debug_input(InputEvent* event, void* context) {
+    furi_assert(event);
+    furi_assert(context);
+
+    DesktopDebugView* debug_view = context;
+
+    if(event->type != InputTypeShort && event->type != InputTypeRepeat) {
+        return false;
+    }
+
+    DesktopViewStatsScreens current = 0;
+    with_view_model(
+        debug_view->view, (DesktopDebugViewModel * model) {
+
+#ifdef SRV_DOLPHIN_STATE_DEBUG
+            if((event->key == InputKeyDown) || (event->key == InputKeyUp)) {
+                model->screen = !model->screen;
+            }
+#endif
+            current = model->screen;
+            return true;
+        });
+
+    size_t count = (event->type == InputTypeRepeat) ? 10 : 1;
+    if(current == DesktopViewStatsMeta) {
+        if(event->key == InputKeyLeft) {
+            while(count-- > 0) {
+                debug_view->callback(DesktopDebugEventWrongDeed, debug_view->context);
+            }
+        } else if(event->key == InputKeyRight) {
+            while(count-- > 0) {
+                debug_view->callback(DesktopDebugEventDeed, debug_view->context);
+            }
+        } else if(event->key == InputKeyOk) {
+            debug_view->callback(DesktopDebugEventSaveState, debug_view->context);
+        } else {
+            return false;
+        }
+    }
+
+    if(event->key == InputKeyBack) {
+        debug_view->callback(DesktopDebugEventExit, debug_view->context);
+    }
+
+    return true;
+}
+
+DesktopDebugView* desktop_debug_alloc() {
+    DesktopDebugView* debug_view = malloc(sizeof(DesktopDebugView));
+    debug_view->view = view_alloc();
+    view_allocate_model(debug_view->view, ViewModelTypeLocking, sizeof(DesktopDebugViewModel));
+    view_set_context(debug_view->view, debug_view);
+    view_set_draw_callback(debug_view->view, (ViewDrawCallback)desktop_debug_render);
+    view_set_input_callback(debug_view->view, desktop_debug_input);
+
+    return debug_view;
+}
+
+void desktop_debug_free(DesktopDebugView* debug_view) {
+    furi_assert(debug_view);
+
+    view_free(debug_view->view);
+    free(debug_view);
+}
+
+void desktop_debug_get_dolphin_data(DesktopDebugView* debug_view) {
+    Dolphin* dolphin = furi_record_open(RECORD_DOLPHIN);
+    DolphinStats stats = dolphin_stats(dolphin);
+    with_view_model(
+        debug_view->view, (DesktopDebugViewModel * model) {
+            model->icounter = stats.icounter;
+            model->butthurt = stats.butthurt;
+            model->timestamp = stats.timestamp;
+            return true;
+        });
+
+    furi_record_close(RECORD_DOLPHIN);
+}
+
+void desktop_debug_reset_screen_idx(DesktopDebugView* debug_view) {
+    with_view_model(
+        debug_view->view, (DesktopDebugViewModel * model) {
+            model->screen = 0;
+            return true;
+        });
+}

applications/services/desktop/views/desktop_view_debug.h

@@ -0,0 +1,42 @@
+#pragma once
+
+#include <stdint.h>
+#include <gui/view.h>
+#include "desktop_events.h"
+
+typedef struct DesktopDebugView DesktopDebugView;
+
+typedef void (*DesktopDebugViewCallback)(DesktopEvent event, void* context);
+
+// Debug info
+typedef enum {
+    DesktopViewStatsFw,
+    DesktopViewStatsMeta,
+    DesktopViewStatsTotalCount,
+} DesktopViewStatsScreens;
+
+struct DesktopDebugView {
+    View* view;
+    DesktopDebugViewCallback callback;
+    void* context;
+};
+
+typedef struct {
+    uint32_t icounter;
+    uint32_t butthurt;
+    uint64_t timestamp;
+    DesktopViewStatsScreens screen;
+} DesktopDebugViewModel;
+
+void desktop_debug_set_callback(
+    DesktopDebugView* debug_view,
+    DesktopDebugViewCallback callback,
+    void* context);
+
+View* desktop_debug_get_view(DesktopDebugView* debug_view);
+
+DesktopDebugView* desktop_debug_alloc();
+void desktop_debug_free(DesktopDebugView* debug_view);
+
+void desktop_debug_get_dolphin_data(DesktopDebugView* debug_view);
+void desktop_debug_reset_screen_idx(DesktopDebugView* debug_view);

applications/services/desktop/views/desktop_view_lock_menu.c

@@ -0,0 +1,130 @@
+#include <furi.h>
+#include <gui/elements.h>
+
+#include "../desktop_i.h"
+#include "desktop_view_lock_menu.h"
+
+#define LOCK_MENU_ITEMS_NB 3
+
+void desktop_lock_menu_set_callback(
+    DesktopLockMenuView* lock_menu,
+    DesktopLockMenuViewCallback callback,
+    void* context) {
+    furi_assert(lock_menu);
+    furi_assert(callback);
+    lock_menu->callback = callback;
+    lock_menu->context = context;
+}
+
+void desktop_lock_menu_pin_set(DesktopLockMenuView* lock_menu, bool pin_is_set) {
+    with_view_model(
+        lock_menu->view, (DesktopLockMenuViewModel * model) {
+            model->pin_set = pin_is_set;
+            return true;
+        });
+}
+
+void desktop_lock_menu_set_idx(DesktopLockMenuView* lock_menu, uint8_t idx) {
+    furi_assert(idx < LOCK_MENU_ITEMS_NB);
+    with_view_model(
+        lock_menu->view, (DesktopLockMenuViewModel * model) {
+            model->idx = idx;
+            return true;
+        });
+}
+
+static void lock_menu_callback(void* context, uint8_t index) {
+    furi_assert(context);
+    DesktopLockMenuView* lock_menu = context;
+    switch(index) {
+    case 0: // lock
+        lock_menu->callback(DesktopLockMenuEventLock, lock_menu->context);
+        break;
+    case 1: // lock
+        lock_menu->callback(DesktopLockMenuEventPinLock, lock_menu->context);
+        break;
+    default: // wip message
+        with_view_model(
+            lock_menu->view, (DesktopLockMenuViewModel * model) {
+                model->hint_timeout = HINT_TIMEOUT;
+                return true;
+            });
+        break;
+    }
+}
+
+void desktop_lock_menu_render(Canvas* canvas, void* model) {
+    const char* Lockmenu_Items[LOCK_MENU_ITEMS_NB] = {"Lock", "Lock with PIN", "DUMB mode"};
+
+    DesktopLockMenuViewModel* m = model;
+    canvas_clear(canvas);
+    canvas_set_color(canvas, ColorBlack);
+    canvas_draw_icon(canvas, -57, 0 + STATUS_BAR_Y_SHIFT, &I_DoorLeft_70x55);
+    canvas_draw_icon(canvas, 116, 0 + STATUS_BAR_Y_SHIFT, &I_DoorRight_70x55);
+    canvas_set_font(canvas, FontSecondary);
+
+    for(uint8_t i = 0; i < LOCK_MENU_ITEMS_NB; ++i) {
+        const char* str = Lockmenu_Items[i];
+
+        if(i == 1 && !m->pin_set) str = "Set PIN";
+        if(m->hint_timeout && m->idx == 2 && m->idx == i) str = "Not Implemented";
+
+        if(str != NULL)
+            canvas_draw_str_aligned(
+                canvas, 64, 9 + (i * 17) + STATUS_BAR_Y_SHIFT, AlignCenter, AlignCenter, str);
+
+        if(m->idx == i) elements_frame(canvas, 15, 1 + (i * 17) + STATUS_BAR_Y_SHIFT, 98, 15);
+    }
+}
+
+View* desktop_lock_menu_get_view(DesktopLockMenuView* lock_menu) {
+    furi_assert(lock_menu);
+    return lock_menu->view;
+}
+
+bool desktop_lock_menu_input(InputEvent* event, void* context) {
+    furi_assert(event);
+    furi_assert(context);
+
+    DesktopLockMenuView* lock_menu = context;
+    uint8_t idx;
+
+    if(event->type != InputTypeShort) return false;
+    with_view_model(
+        lock_menu->view, (DesktopLockMenuViewModel * model) {
+            model->hint_timeout = 0; // clear hint timeout
+            if(event->key == InputKeyUp) {
+                model->idx = CLAMP(model->idx - 1, LOCK_MENU_ITEMS_NB - 1, 0);
+            } else if(event->key == InputKeyDown) {
+                model->idx = CLAMP(model->idx + 1, LOCK_MENU_ITEMS_NB - 1, 0);
+            }
+            idx = model->idx;
+            return true;
+        });
+
+    if(event->key == InputKeyBack) {
+        lock_menu->callback(DesktopLockMenuEventExit, lock_menu->context);
+    } else if(event->key == InputKeyOk) {
+        lock_menu_callback(lock_menu, idx);
+    }
+
+    return true;
+}
+
+DesktopLockMenuView* desktop_lock_menu_alloc() {
+    DesktopLockMenuView* lock_menu = malloc(sizeof(DesktopLockMenuView));
+    lock_menu->view = view_alloc();
+    view_allocate_model(lock_menu->view, ViewModelTypeLocking, sizeof(DesktopLockMenuViewModel));
+    view_set_context(lock_menu->view, lock_menu);
+    view_set_draw_callback(lock_menu->view, (ViewDrawCallback)desktop_lock_menu_render);
+    view_set_input_callback(lock_menu->view, desktop_lock_menu_input);
+
+    return lock_menu;
+}
+
+void desktop_lock_menu_free(DesktopLockMenuView* lock_menu_view) {
+    furi_assert(lock_menu_view);
+
+    view_free(lock_menu_view->view);
+    free(lock_menu_view);
+}

applications/services/desktop/views/desktop_view_lock_menu.h

@@ -0,0 +1,33 @@
+#pragma once
+
+#include <gui/view.h>
+#include "desktop_events.h"
+
+#define HINT_TIMEOUT 2
+
+typedef struct DesktopLockMenuView DesktopLockMenuView;
+
+typedef void (*DesktopLockMenuViewCallback)(DesktopEvent event, void* context);
+
+struct DesktopLockMenuView {
+    View* view;
+    DesktopLockMenuViewCallback callback;
+    void* context;
+};
+
+typedef struct {
+    uint8_t idx;
+    uint8_t hint_timeout;
+    bool pin_set;
+} DesktopLockMenuViewModel;
+
+void desktop_lock_menu_set_callback(
+    DesktopLockMenuView* lock_menu,
+    DesktopLockMenuViewCallback callback,
+    void* context);
+
+View* desktop_lock_menu_get_view(DesktopLockMenuView* lock_menu);
+void desktop_lock_menu_pin_set(DesktopLockMenuView* lock_menu, bool pin_is_set);
+void desktop_lock_menu_set_idx(DesktopLockMenuView* lock_menu, uint8_t idx);
+DesktopLockMenuView* desktop_lock_menu_alloc();
+void desktop_lock_menu_free(DesktopLockMenuView* lock_menu);

applications/services/desktop/views/desktop_view_locked.c

@@ -0,0 +1,245 @@
+#include <projdefs.h>
+#include <stdint.h>
+#include <furi.h>
+#include <gui/elements.h>
+#include <gui/icon.h>
+#include <gui/view.h>
+#include <portmacro.h>
+
+#include <desktop/desktop_settings.h>
+#include "../desktop_i.h"
+#include "desktop_view_locked.h"
+
+#define DOOR_MOVING_INTERVAL_MS (1000 / 16)
+#define LOCKED_HINT_TIMEOUT_MS (1000)
+#define UNLOCKED_HINT_TIMEOUT_MS (2000)
+
+#define DOOR_OFFSET_START -55
+#define DOOR_OFFSET_END 0
+
+#define DOOR_L_FINAL_POS 0
+#define DOOR_R_FINAL_POS 60
+
+#define UNLOCK_CNT 3
+#define UNLOCK_RST_TIMEOUT 600
+
+struct DesktopViewLocked {
+    View* view;
+    DesktopViewLockedCallback callback;
+    void* context;
+
+    TimerHandle_t timer;
+    uint8_t lock_count;
+    uint32_t lock_lastpress;
+};
+
+typedef enum {
+    DesktopViewLockedStateUnlocked,
+    DesktopViewLockedStateLocked,
+    DesktopViewLockedStateDoorsClosing,
+    DesktopViewLockedStateLockedHintShown,
+    DesktopViewLockedStateUnlockedHintShown
+} DesktopViewLockedState;
+
+typedef struct {
+    bool pin_locked;
+    int8_t door_offset;
+    DesktopViewLockedState view_state;
+} DesktopViewLockedModel;
+
+void desktop_view_locked_set_callback(
+    DesktopViewLocked* locked_view,
+    DesktopViewLockedCallback callback,
+    void* context) {
+    furi_assert(locked_view);
+    furi_assert(callback);
+    locked_view->callback = callback;
+    locked_view->context = context;
+}
+
+static void locked_view_timer_callback(TimerHandle_t timer) {
+    DesktopViewLocked* locked_view = pvTimerGetTimerID(timer);
+    locked_view->callback(DesktopLockedEventUpdate, locked_view->context);
+}
+
+static void desktop_view_locked_doors_draw(Canvas* canvas, DesktopViewLockedModel* model) {
+    int8_t offset = model->door_offset;
+    uint8_t door_left_x = DOOR_L_FINAL_POS + offset;
+    uint8_t door_right_x = DOOR_R_FINAL_POS - offset;
+    uint8_t height = icon_get_height(&I_DoorLeft_70x55);
+    canvas_draw_icon(canvas, door_left_x, canvas_height(canvas) - height, &I_DoorLeft_70x55);
+    canvas_draw_icon(canvas, door_right_x, canvas_height(canvas) - height, &I_DoorRight_70x55);
+}
+
+static bool desktop_view_locked_doors_move(DesktopViewLockedModel* model) {
+    bool stop = false;
+    if(model->door_offset < DOOR_OFFSET_END) {
+        model->door_offset = CLAMP(model->door_offset + 5, DOOR_OFFSET_END, DOOR_OFFSET_START);
+        stop = true;
+    }
+
+    return stop;
+}
+
+static void desktop_view_locked_update_hint_icon_timeout(DesktopViewLocked* locked_view) {
+    DesktopViewLockedModel* model = view_get_model(locked_view->view);
+    const bool change_state = (model->view_state == DesktopViewLockedStateLocked) &&
+                              !model->pin_locked;
+    if(change_state) {
+        model->view_state = DesktopViewLockedStateLockedHintShown;
+    }
+    view_commit_model(locked_view->view, change_state);
+    xTimerChangePeriod(locked_view->timer, pdMS_TO_TICKS(LOCKED_HINT_TIMEOUT_MS), portMAX_DELAY);
+}
+
+void desktop_view_locked_update(DesktopViewLocked* locked_view) {
+    DesktopViewLockedModel* model = view_get_model(locked_view->view);
+    DesktopViewLockedState view_state = model->view_state;
+
+    if(view_state == DesktopViewLockedStateDoorsClosing &&
+       !desktop_view_locked_doors_move(model)) {
+        model->view_state = DesktopViewLockedStateLocked;
+    } else if(view_state == DesktopViewLockedStateLockedHintShown) {
+        model->view_state = DesktopViewLockedStateLocked;
+    } else if(view_state == DesktopViewLockedStateUnlockedHintShown) {
+        model->view_state = DesktopViewLockedStateUnlocked;
+    }
+
+    view_commit_model(locked_view->view, true);
+
+    if(view_state != DesktopViewLockedStateDoorsClosing) {
+        xTimerStop(locked_view->timer, portMAX_DELAY);
+    }
+}
+
+static void desktop_view_locked_draw(Canvas* canvas, void* model) {
+    DesktopViewLockedModel* m = model;
+    DesktopViewLockedState view_state = m->view_state;
+    canvas_set_color(canvas, ColorBlack);
+
+    if(view_state == DesktopViewLockedStateDoorsClosing) {
+        desktop_view_locked_doors_draw(canvas, m);
+        canvas_set_font(canvas, FontPrimary);
+        elements_multiline_text_framed(canvas, 42, 30 + STATUS_BAR_Y_SHIFT, "Locked");
+    } else if(view_state == DesktopViewLockedStateLockedHintShown) {
+        canvas_set_font(canvas, FontSecondary);
+        elements_bold_rounded_frame(canvas, 14, 2 + STATUS_BAR_Y_SHIFT, 99, 48);
+        elements_multiline_text(canvas, 65, 20 + STATUS_BAR_Y_SHIFT, "To unlock\npress:");
+        canvas_draw_icon(canvas, 65, 36 + STATUS_BAR_Y_SHIFT, &I_Pin_back_arrow_10x8);
+        canvas_draw_icon(canvas, 80, 36 + STATUS_BAR_Y_SHIFT, &I_Pin_back_arrow_10x8);
+        canvas_draw_icon(canvas, 95, 36 + STATUS_BAR_Y_SHIFT, &I_Pin_back_arrow_10x8);
+        canvas_draw_icon(canvas, 16, 7 + STATUS_BAR_Y_SHIFT, &I_WarningDolphin_45x42);
+        canvas_draw_dot(canvas, 17, 61);
+    } else if(view_state == DesktopViewLockedStateUnlockedHintShown) {
+        canvas_set_font(canvas, FontPrimary);
+        elements_multiline_text_framed(canvas, 42, 30 + STATUS_BAR_Y_SHIFT, "Unlocked");
+    }
+}
+
+View* desktop_view_locked_get_view(DesktopViewLocked* locked_view) {
+    furi_assert(locked_view);
+    return locked_view->view;
+}
+
+static bool desktop_view_locked_input(InputEvent* event, void* context) {
+    furi_assert(event);
+    furi_assert(context);
+
+    bool is_changed = false;
+    const uint32_t press_time = xTaskGetTickCount();
+    DesktopViewLocked* locked_view = context;
+    DesktopViewLockedModel* model = view_get_model(locked_view->view);
+    if(model->view_state == DesktopViewLockedStateUnlockedHintShown &&
+       event->type == InputTypePress) {
+        model->view_state = DesktopViewLockedStateUnlocked;
+        is_changed = true;
+    }
+    const DesktopViewLockedState view_state = model->view_state;
+    const bool pin_locked = model->pin_locked;
+    view_commit_model(locked_view->view, is_changed);
+
+    if(view_state == DesktopViewLockedStateUnlocked) {
+        return view_state != DesktopViewLockedStateUnlocked;
+    } else if(view_state == DesktopViewLockedStateLocked && pin_locked) {
+        locked_view->callback(DesktopLockedEventShowPinInput, locked_view->context);
+    } else if(
+        view_state == DesktopViewLockedStateLocked ||
+        view_state == DesktopViewLockedStateLockedHintShown) {
+        if(press_time - locked_view->lock_lastpress > UNLOCK_RST_TIMEOUT) {
+            locked_view->lock_lastpress = press_time;
+            locked_view->lock_count = 0;
+        }
+
+        desktop_view_locked_update_hint_icon_timeout(locked_view);
+
+        if(event->key == InputKeyBack) {
+            if(event->type == InputTypeShort) {
+                locked_view->lock_lastpress = press_time;
+                locked_view->lock_count++;
+                if(locked_view->lock_count == UNLOCK_CNT) {
+                    locked_view->callback(DesktopLockedEventUnlocked, locked_view->context);
+                }
+            }
+        } else {
+            locked_view->lock_count = 0;
+        }
+
+        locked_view->lock_lastpress = press_time;
+    }
+
+    return true;
+}
+
+DesktopViewLocked* desktop_view_locked_alloc() {
+    DesktopViewLocked* locked_view = malloc(sizeof(DesktopViewLocked));
+    locked_view->view = view_alloc();
+    locked_view->timer =
+        xTimerCreate(NULL, 1000 / 16, pdTRUE, locked_view, locked_view_timer_callback);
+
+    view_allocate_model(locked_view->view, ViewModelTypeLocking, sizeof(DesktopViewLockedModel));
+    view_set_context(locked_view->view, locked_view);
+    view_set_draw_callback(locked_view->view, desktop_view_locked_draw);
+    view_set_input_callback(locked_view->view, desktop_view_locked_input);
+
+    return locked_view;
+}
+
+void desktop_view_locked_free(DesktopViewLocked* locked_view) {
+    furi_assert(locked_view);
+    furi_timer_free(locked_view->timer);
+    view_free(locked_view->view);
+    free(locked_view);
+}
+
+void desktop_view_locked_close_doors(DesktopViewLocked* locked_view) {
+    DesktopViewLockedModel* model = view_get_model(locked_view->view);
+    furi_assert(model->view_state == DesktopViewLockedStateLocked);
+    model->view_state = DesktopViewLockedStateDoorsClosing;
+    model->door_offset = DOOR_OFFSET_START;
+    view_commit_model(locked_view->view, true);
+    xTimerChangePeriod(locked_view->timer, pdMS_TO_TICKS(DOOR_MOVING_INTERVAL_MS), portMAX_DELAY);
+}
+
+void desktop_view_locked_lock(DesktopViewLocked* locked_view, bool pin_locked) {
+    DesktopViewLockedModel* model = view_get_model(locked_view->view);
+    furi_assert(model->view_state == DesktopViewLockedStateUnlocked);
+    model->view_state = DesktopViewLockedStateLocked;
+    model->pin_locked = pin_locked;
+    view_commit_model(locked_view->view, true);
+}
+
+void desktop_view_locked_unlock(DesktopViewLocked* locked_view) {
+    locked_view->lock_count = 0;
+    DesktopViewLockedModel* model = view_get_model(locked_view->view);
+    model->view_state = DesktopViewLockedStateUnlockedHintShown;
+    model->pin_locked = false;
+    view_commit_model(locked_view->view, true);
+    xTimerChangePeriod(locked_view->timer, pdMS_TO_TICKS(UNLOCKED_HINT_TIMEOUT_MS), portMAX_DELAY);
+}
+
+bool desktop_view_locked_is_locked_hint_visible(DesktopViewLocked* locked_view) {
+    DesktopViewLockedModel* model = view_get_model(locked_view->view);
+    const DesktopViewLockedState view_state = model->view_state;
+    view_commit_model(locked_view->view, false);
+    return view_state == DesktopViewLockedStateLockedHintShown;
+}

applications/services/desktop/views/desktop_view_locked.h

@@ -0,0 +1,22 @@
+#pragma once
+
+#include <desktop/desktop_settings.h>
+#include "../views/desktop_events.h"
+#include <gui/view.h>
+
+typedef struct DesktopViewLocked DesktopViewLocked;
+
+typedef void (*DesktopViewLockedCallback)(DesktopEvent event, void* context);
+
+void desktop_view_locked_set_callback(
+    DesktopViewLocked* locked_view,
+    DesktopViewLockedCallback callback,
+    void* context);
+void desktop_view_locked_update(DesktopViewLocked* locked_view);
+View* desktop_view_locked_get_view(DesktopViewLocked* locked_view);
+DesktopViewLocked* desktop_view_locked_alloc();
+void desktop_view_locked_free(DesktopViewLocked* locked_view);
+void desktop_view_locked_lock(DesktopViewLocked* locked_view, bool pin_locked);
+void desktop_view_locked_unlock(DesktopViewLocked* locked_view);
+void desktop_view_locked_close_doors(DesktopViewLocked* locked_view);
+bool desktop_view_locked_is_locked_hint_visible(DesktopViewLocked* locked_view);

applications/services/desktop/views/desktop_view_main.c

@@ -0,0 +1,104 @@
+#include <gui/gui_i.h>
+#include <gui/view.h>
+#include <gui/elements.h>
+#include <gui/canvas.h>
+#include <furi.h>
+#include <input/input.h>
+#include <dolphin/dolphin.h>
+
+#include "../desktop_i.h"
+#include "desktop_view_main.h"
+
+struct DesktopMainView {
+    View* view;
+    DesktopMainViewCallback callback;
+    void* context;
+    TimerHandle_t poweroff_timer;
+};
+
+#define DESKTOP_MAIN_VIEW_POWEROFF_TIMEOUT 5000
+
+static void desktop_main_poweroff_timer_callback(TimerHandle_t timer) {
+    DesktopMainView* main_view = pvTimerGetTimerID(timer);
+    main_view->callback(DesktopMainEventOpenPowerOff, main_view->context);
+}
+
+void desktop_main_set_callback(
+    DesktopMainView* main_view,
+    DesktopMainViewCallback callback,
+    void* context) {
+    furi_assert(main_view);
+    furi_assert(callback);
+    main_view->callback = callback;
+    main_view->context = context;
+}
+
+View* desktop_main_get_view(DesktopMainView* main_view) {
+    furi_assert(main_view);
+    return main_view->view;
+}
+
+bool desktop_main_input(InputEvent* event, void* context) {
+    furi_assert(event);
+    furi_assert(context);
+
+    DesktopMainView* main_view = context;
+
+    if(event->type == InputTypeShort) {
+        if(event->key == InputKeyOk) {
+            main_view->callback(DesktopMainEventOpenMenu, main_view->context);
+        } else if(event->key == InputKeyUp) {
+            main_view->callback(DesktopMainEventOpenLockMenu, main_view->context);
+        } else if(event->key == InputKeyDown) {
+            main_view->callback(DesktopMainEventOpenArchive, main_view->context);
+        } else if(event->key == InputKeyLeft) {
+            main_view->callback(DesktopMainEventOpenFavoritePrimary, main_view->context);
+        } else if(event->key == InputKeyRight) {
+            main_view->callback(DesktopMainEventOpenPassport, main_view->context);
+        }
+    } else if(event->type == InputTypeLong) {
+        if(event->key == InputKeyDown) {
+            main_view->callback(DesktopMainEventOpenDebug, main_view->context);
+        } else if(event->key == InputKeyLeft) {
+            main_view->callback(DesktopMainEventOpenFavoriteSecondary, main_view->context);
+        }
+    }
+
+    if(event->key == InputKeyBack) {
+        if(event->type == InputTypePress) {
+            xTimerChangePeriod(
+                main_view->poweroff_timer,
+                pdMS_TO_TICKS(DESKTOP_MAIN_VIEW_POWEROFF_TIMEOUT),
+                portMAX_DELAY);
+        } else if(event->type == InputTypeRelease) {
+            xTimerStop(main_view->poweroff_timer, portMAX_DELAY);
+        }
+    }
+
+    return true;
+}
+
+DesktopMainView* desktop_main_alloc() {
+    DesktopMainView* main_view = malloc(sizeof(DesktopMainView));
+
+    main_view->view = view_alloc();
+    view_allocate_model(main_view->view, ViewModelTypeLockFree, 1);
+    view_set_context(main_view->view, main_view);
+    view_set_input_callback(main_view->view, desktop_main_input);
+
+    main_view->poweroff_timer = xTimerCreate(
+        NULL,
+        pdMS_TO_TICKS(DESKTOP_MAIN_VIEW_POWEROFF_TIMEOUT),
+        pdFALSE,
+        main_view,
+        desktop_main_poweroff_timer_callback);
+
+    return main_view;
+}
+
+void desktop_main_free(DesktopMainView* main_view) {
+    furi_assert(main_view);
+    view_free(main_view->view);
+    furi_timer_free(main_view->poweroff_timer);
+    free(main_view);
+}

applications/services/desktop/views/desktop_view_main.h

@@ -0,0 +1,17 @@
+#pragma once
+
+#include <gui/view.h>
+#include "desktop_events.h"
+
+typedef struct DesktopMainView DesktopMainView;
+
+typedef void (*DesktopMainViewCallback)(DesktopEvent event, void* context);
+
+void desktop_main_set_callback(
+    DesktopMainView* main_view,
+    DesktopMainViewCallback callback,
+    void* context);
+
+View* desktop_main_get_view(DesktopMainView* main_view);
+DesktopMainView* desktop_main_alloc();
+void desktop_main_free(DesktopMainView* main_view);

applications/services/desktop/views/desktop_view_pin_input.c

@@ -0,0 +1,340 @@
+#include <gui/canvas.h>
+#include <furi.h>
+#include <gui/view.h>
+#include <gui/elements.h>
+#include <stdint.h>
+#include <portmacro.h>
+
+#include "desktop_view_pin_input.h"
+#include <desktop/desktop_settings.h>
+
+#define NO_ACTIVITY_TIMEOUT 15000
+
+#define PIN_CELL_WIDTH 13
+#define DEFAULT_PIN_X 64
+#define DEFAULT_PIN_Y 32
+
+struct DesktopViewPinInput {
+    View* view;
+    DesktopViewPinInputCallback back_callback;
+    DesktopViewPinInputCallback timeout_callback;
+    DesktopViewPinInputDoneCallback done_callback;
+    void* context;
+    TimerHandle_t timer;
+};
+
+typedef struct {
+    PinCode pin;
+    bool pin_hidden;
+    bool locked_input;
+    uint8_t pin_x;
+    uint8_t pin_y;
+    const char* primary_str;
+    uint8_t primary_str_x;
+    uint8_t primary_str_y;
+    const char* secondary_str;
+    uint8_t secondary_str_x;
+    uint8_t secondary_str_y;
+    const char* button_label;
+} DesktopViewPinInputModel;
+
+static bool desktop_view_pin_input_input(InputEvent* event, void* context) {
+    furi_assert(event);
+    furi_assert(context);
+
+    DesktopViewPinInput* pin_input = context;
+    DesktopViewPinInputModel* model = view_get_model(pin_input->view);
+
+    bool call_back_callback = false;
+    bool call_done_callback = false;
+    PinCode pin_code = {0};
+
+    if(event->type == InputTypeShort) {
+        switch(event->key) {
+        case InputKeyRight:
+        case InputKeyLeft:
+        case InputKeyDown:
+        case InputKeyUp:
+            if(!model->locked_input) {
+                if(model->pin.length < MAX_PIN_SIZE) {
+                    model->pin.data[model->pin.length++] = event->key;
+                }
+            }
+            break;
+        case InputKeyOk:
+            if(model->pin.length >= MIN_PIN_SIZE) {
+                call_done_callback = true;
+                pin_code = model->pin;
+            }
+            break;
+        case InputKeyBack:
+            if(!model->locked_input) {
+                if(model->pin.length > 0) {
+                    model->pin.length = 0;
+                } else {
+                    call_back_callback = true;
+                }
+            }
+            break;
+        default:
+            furi_assert(0);
+            break;
+        }
+    }
+    view_commit_model(pin_input->view, true);
+
+    if(call_done_callback && pin_input->done_callback) {
+        pin_input->done_callback(&pin_code, pin_input->context);
+    } else if(call_back_callback && pin_input->back_callback) {
+        pin_input->back_callback(pin_input->context);
+    }
+
+    xTimerStart(pin_input->timer, 0);
+
+    return true;
+}
+
+static void desktop_view_pin_input_draw_cells(Canvas* canvas, DesktopViewPinInputModel* model) {
+    furi_assert(canvas);
+    furi_assert(model);
+
+    uint8_t draw_pin_size = MAX(4, model->pin.length + 1);
+    if(model->locked_input || (model->pin.length == MAX_PIN_SIZE)) {
+        draw_pin_size = model->pin.length;
+    }
+
+    uint8_t x = model->pin_x - (draw_pin_size * (PIN_CELL_WIDTH - 1)) / 2;
+    uint8_t y = model->pin_y - (PIN_CELL_WIDTH / 2);
+
+    for(int i = 0; i < draw_pin_size; ++i) {
+        canvas_draw_frame(canvas, x, y, PIN_CELL_WIDTH, PIN_CELL_WIDTH);
+        if(i < model->pin.length) {
+            if(model->pin_hidden) {
+                canvas_draw_icon(canvas, x + 3, y + 3, &I_Pin_star_7x7);
+            } else {
+                switch(model->pin.data[i]) {
+                case InputKeyDown:
+                    canvas_draw_icon(canvas, x + 3, y + 2, &I_Pin_arrow_down_7x9);
+                    break;
+                case InputKeyUp:
+                    canvas_draw_icon(canvas, x + 3, y + 2, &I_Pin_arrow_up7x9);
+                    break;
+                case InputKeyLeft:
+                    canvas_draw_icon(canvas, x + 2, y + 3, &I_Pin_arrow_left_9x7);
+                    break;
+                case InputKeyRight:
+                    canvas_draw_icon(canvas, x + 2, y + 3, &I_Pin_arrow_right_9x7);
+                    break;
+                default:
+                    furi_assert(0);
+                    break;
+                }
+            }
+        } else if(i == model->pin.length) {
+            canvas_draw_icon(canvas, x + 4, y + PIN_CELL_WIDTH + 1, &I_Pin_pointer_5x3);
+        }
+        x += PIN_CELL_WIDTH - 1;
+    }
+}
+
+static void desktop_view_pin_input_draw(Canvas* canvas, void* context) {
+    furi_assert(canvas);
+    furi_assert(context);
+
+    canvas_set_font(canvas, FontSecondary);
+    DesktopViewPinInputModel* model = context;
+    desktop_view_pin_input_draw_cells(canvas, model);
+
+    if((model->pin.length > 0) && !model->locked_input) {
+        canvas_draw_icon(canvas, 4, 53, &I_Pin_back_full_40x8);
+    }
+
+    if(model->button_label && ((model->pin.length >= MIN_PIN_SIZE) || model->locked_input)) {
+        elements_button_center(canvas, model->button_label);
+    }
+
+    if(model->primary_str) {
+        canvas_set_font(canvas, FontPrimary);
+        canvas_draw_str(canvas, model->primary_str_x, model->primary_str_y, model->primary_str);
+        canvas_set_font(canvas, FontSecondary);
+    }
+
+    if(model->secondary_str) {
+        canvas_set_font(canvas, FontSecondary);
+        canvas_draw_str(
+            canvas, model->secondary_str_x, model->secondary_str_y, model->secondary_str);
+    }
+}
+
+void desktop_view_pin_input_timer_callback(TimerHandle_t timer) {
+    DesktopViewPinInput* pin_input = pvTimerGetTimerID(timer);
+
+    if(pin_input->timeout_callback) {
+        pin_input->timeout_callback(pin_input->context);
+    }
+}
+
+static void desktop_view_pin_input_enter(void* context) {
+    DesktopViewPinInput* pin_input = context;
+    xTimerStart(pin_input->timer, portMAX_DELAY);
+}
+
+static void desktop_view_pin_input_exit(void* context) {
+    DesktopViewPinInput* pin_input = context;
+    xTimerStop(pin_input->timer, portMAX_DELAY);
+}
+
+DesktopViewPinInput* desktop_view_pin_input_alloc(void) {
+    DesktopViewPinInput* pin_input = malloc(sizeof(DesktopViewPinInput));
+    pin_input->view = view_alloc();
+    view_allocate_model(pin_input->view, ViewModelTypeLocking, sizeof(DesktopViewPinInputModel));
+    view_set_context(pin_input->view, pin_input);
+    view_set_draw_callback(pin_input->view, desktop_view_pin_input_draw);
+    view_set_input_callback(pin_input->view, desktop_view_pin_input_input);
+    pin_input->timer = xTimerCreate(
+        NULL,
+        pdMS_TO_TICKS(NO_ACTIVITY_TIMEOUT),
+        pdFALSE,
+        pin_input,
+        desktop_view_pin_input_timer_callback);
+    view_set_enter_callback(pin_input->view, desktop_view_pin_input_enter);
+    view_set_exit_callback(pin_input->view, desktop_view_pin_input_exit);
+
+    DesktopViewPinInputModel* model = view_get_model(pin_input->view);
+    model->pin_x = DEFAULT_PIN_X;
+    model->pin_y = DEFAULT_PIN_Y;
+    model->pin.length = 0;
+    view_commit_model(pin_input->view, false);
+
+    return pin_input;
+}
+
+void desktop_view_pin_input_free(DesktopViewPinInput* pin_input) {
+    furi_assert(pin_input);
+
+    xTimerStop(pin_input->timer, portMAX_DELAY);
+    while(xTimerIsTimerActive(pin_input->timer)) {
+        furi_delay_tick(1);
+    }
+    xTimerDelete(pin_input->timer, portMAX_DELAY);
+
+    view_free(pin_input->view);
+    free(pin_input);
+}
+
+void desktop_view_pin_input_lock_input(DesktopViewPinInput* pin_input) {
+    furi_assert(pin_input);
+
+    DesktopViewPinInputModel* model = view_get_model(pin_input->view);
+    model->locked_input = true;
+    view_commit_model(pin_input->view, true);
+}
+
+void desktop_view_pin_input_unlock_input(DesktopViewPinInput* pin_input) {
+    furi_assert(pin_input);
+
+    DesktopViewPinInputModel* model = view_get_model(pin_input->view);
+    model->locked_input = false;
+    view_commit_model(pin_input->view, true);
+}
+
+void desktop_view_pin_input_set_pin(DesktopViewPinInput* pin_input, const PinCode* pin) {
+    furi_assert(pin_input);
+    furi_assert(pin);
+
+    DesktopViewPinInputModel* model = view_get_model(pin_input->view);
+    model->pin = *pin;
+    view_commit_model(pin_input->view, true);
+}
+
+void desktop_view_pin_input_reset_pin(DesktopViewPinInput* pin_input) {
+    furi_assert(pin_input);
+
+    DesktopViewPinInputModel* model = view_get_model(pin_input->view);
+    model->pin.length = 0;
+    view_commit_model(pin_input->view, true);
+}
+
+void desktop_view_pin_input_hide_pin(DesktopViewPinInput* pin_input, bool pin_hidden) {
+    furi_assert(pin_input);
+
+    DesktopViewPinInputModel* model = view_get_model(pin_input->view);
+    model->pin_hidden = pin_hidden;
+    view_commit_model(pin_input->view, true);
+}
+
+void desktop_view_pin_input_set_label_button(DesktopViewPinInput* pin_input, const char* label) {
+    furi_assert(pin_input);
+
+    DesktopViewPinInputModel* model = view_get_model(pin_input->view);
+    model->button_label = label;
+    view_commit_model(pin_input->view, true);
+}
+
+void desktop_view_pin_input_set_label_primary(
+    DesktopViewPinInput* pin_input,
+    uint8_t x,
+    uint8_t y,
+    const char* label) {
+    furi_assert(pin_input);
+
+    DesktopViewPinInputModel* model = view_get_model(pin_input->view);
+    model->primary_str = label;
+    model->primary_str_x = x;
+    model->primary_str_y = y;
+    view_commit_model(pin_input->view, true);
+}
+
+void desktop_view_pin_input_set_label_secondary(
+    DesktopViewPinInput* pin_input,
+    uint8_t x,
+    uint8_t y,
+    const char* label) {
+    furi_assert(pin_input);
+
+    DesktopViewPinInputModel* model = view_get_model(pin_input->view);
+    model->secondary_str = label;
+    model->secondary_str_x = x;
+    model->secondary_str_y = y;
+    view_commit_model(pin_input->view, true);
+}
+
+void desktop_view_pin_input_set_pin_position(DesktopViewPinInput* pin_input, uint8_t x, uint8_t y) {
+    furi_assert(pin_input);
+
+    DesktopViewPinInputModel* model = view_get_model(pin_input->view);
+    model->pin_x = x;
+    model->pin_y = y;
+    view_commit_model(pin_input->view, true);
+}
+
+void desktop_view_pin_input_set_context(DesktopViewPinInput* pin_input, void* context) {
+    furi_assert(pin_input);
+    pin_input->context = context;
+}
+
+void desktop_view_pin_input_set_timeout_callback(
+    DesktopViewPinInput* pin_input,
+    DesktopViewPinInputCallback callback) {
+    furi_assert(pin_input);
+    pin_input->timeout_callback = callback;
+}
+
+void desktop_view_pin_input_set_back_callback(
+    DesktopViewPinInput* pin_input,
+    DesktopViewPinInputCallback callback) {
+    furi_assert(pin_input);
+    pin_input->back_callback = callback;
+}
+
+void desktop_view_pin_input_set_done_callback(
+    DesktopViewPinInput* pin_input,
+    DesktopViewPinInputDoneCallback callback) {
+    furi_assert(pin_input);
+    pin_input->done_callback = callback;
+}
+
+View* desktop_view_pin_input_get_view(DesktopViewPinInput* pin_input) {
+    furi_assert(pin_input);
+    return pin_input->view;
+}

applications/services/desktop/views/desktop_view_pin_input.h

@@ -0,0 +1,40 @@
+#pragma once
+
+#include <gui/view.h>
+#include <desktop/desktop_settings.h>
+
+typedef void (*DesktopViewPinInputCallback)(void*);
+typedef void (*DesktopViewPinInputDoneCallback)(const PinCode* pin_code, void*);
+typedef struct DesktopViewPinInput DesktopViewPinInput;
+
+DesktopViewPinInput* desktop_view_pin_input_alloc(void);
+void desktop_view_pin_input_free(DesktopViewPinInput*);
+
+void desktop_view_pin_input_set_pin(DesktopViewPinInput* pin_input, const PinCode* pin);
+void desktop_view_pin_input_reset_pin(DesktopViewPinInput* pin_input);
+void desktop_view_pin_input_hide_pin(DesktopViewPinInput* pin_input, bool pin_hidden);
+void desktop_view_pin_input_set_label_button(DesktopViewPinInput* pin_input, const char* label);
+void desktop_view_pin_input_set_label_primary(
+    DesktopViewPinInput* pin_input,
+    uint8_t x,
+    uint8_t y,
+    const char* label);
+void desktop_view_pin_input_set_label_secondary(
+    DesktopViewPinInput* pin_input,
+    uint8_t x,
+    uint8_t y,
+    const char* label);
+void desktop_view_pin_input_set_pin_position(DesktopViewPinInput* pin_input, uint8_t x, uint8_t y);
+View* desktop_view_pin_input_get_view(DesktopViewPinInput*);
+void desktop_view_pin_input_set_done_callback(
+    DesktopViewPinInput* pin_input,
+    DesktopViewPinInputDoneCallback callback);
+void desktop_view_pin_input_set_back_callback(
+    DesktopViewPinInput* pin_input,
+    DesktopViewPinInputCallback callback);
+void desktop_view_pin_input_set_timeout_callback(
+    DesktopViewPinInput* pin_input,
+    DesktopViewPinInputCallback callback);
+void desktop_view_pin_input_set_context(DesktopViewPinInput* pin_input, void* context);
+void desktop_view_pin_input_lock_input(DesktopViewPinInput* pin_input);
+void desktop_view_pin_input_unlock_input(DesktopViewPinInput* pin_input);

applications/services/desktop/views/desktop_view_pin_setup_done.c

@@ -0,0 +1,80 @@
+#include <furi.h>
+#include <furi_hal.h>
+#include <gui/elements.h>
+#include <gui/canvas.h>
+#include <toolbox/version.h>
+#include <assets_icons.h>
+#include <dolphin/helpers/dolphin_state.h>
+#include <dolphin/dolphin.h>
+
+#include "../desktop_i.h"
+#include "desktop_view_pin_setup_done.h"
+
+struct DesktopViewPinSetupDone {
+    View* view;
+    DesktopViewPinSetupDoneDoneCallback callback;
+    void* context;
+};
+
+static void desktop_view_pin_done_draw(Canvas* canvas, void* model) {
+    furi_assert(canvas);
+    furi_assert(model);
+
+    canvas_set_font(canvas, FontPrimary);
+    elements_multiline_text_aligned(
+        canvas, 64, 0, AlignCenter, AlignTop, "Prepare to use\narrows as\nPIN symbols");
+
+    canvas_set_font(canvas, FontSecondary);
+    elements_multiline_text(canvas, 58, 24, "Prepare to use\narrows as\nPIN symbols");
+
+    canvas_draw_icon(canvas, 16, 18, &I_Pin_attention_dpad_29x29);
+    elements_button_right(canvas, "Next");
+}
+
+static bool desktop_view_pin_done_input(InputEvent* event, void* context) {
+    furi_assert(event);
+    furi_assert(context);
+
+    DesktopViewPinSetupDone* instance = context;
+    bool consumed = false;
+
+    if((event->key == InputKeyRight) && (event->type == InputTypeShort)) {
+        instance->callback(instance->context);
+        consumed = true;
+    }
+
+    return consumed;
+}
+
+void desktop_view_pin_done_set_callback(
+    DesktopViewPinSetupDone* instance,
+    DesktopViewPinSetupDoneDoneCallback callback,
+    void* context) {
+    furi_assert(instance);
+    furi_assert(callback);
+    instance->callback = callback;
+    instance->context = context;
+}
+
+DesktopViewPinSetupDone* desktop_view_pin_done_alloc() {
+    DesktopViewPinSetupDone* view = malloc(sizeof(DesktopViewPinSetupDone));
+    view->view = view_alloc();
+    view_allocate_model(view->view, ViewModelTypeLockFree, 1);
+    view_set_context(view->view, view);
+    view_set_draw_callback(view->view, desktop_view_pin_done_draw);
+    view_set_input_callback(view->view, desktop_view_pin_done_input);
+
+    return view;
+}
+
+void desktop_view_pin_done_free(DesktopViewPinSetupDone* instance) {
+    furi_assert(instance);
+
+    view_free(instance->view);
+    free(instance);
+}
+
+View* desktop_view_pin_done_get_view(DesktopViewPinSetupDone* instance) {
+    furi_assert(instance);
+    return instance->view;
+}

applications/services/desktop/views/desktop_view_pin_setup_done.h

@@ -0,0 +1,15 @@
+#pragma once
+
+#include <gui/view.h>
+
+typedef struct DesktopViewPinSetupDone DesktopViewPinSetupDone;
+
+typedef void (*DesktopViewPinSetupDoneDoneCallback)(void*);
+
+void desktop_view_pin_done_set_callback(
+    DesktopViewPinSetupDone* instance,
+    DesktopViewPinSetupDoneDoneCallback callback,
+    void* context);
+DesktopViewPinSetupDone* desktop_view_pin_done_alloc();
+void desktop_view_pin_done_free(DesktopViewPinSetupDone* instance);
+View* desktop_view_pin_done_get_view(DesktopViewPinSetupDone* instance);

applications/services/desktop/views/desktop_view_pin_timeout.c

@@ -0,0 +1,111 @@
+
+#include <furi.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <FreeRTOS.h>
+#include <portmacro.h>
+#include <projdefs.h>
+#include <input/input.h>
+#include <gui/canvas.h>
+#include <gui/view.h>
+
+#include "desktop_view_pin_timeout.h"
+
+struct DesktopViewPinTimeout {
+    View* view;
+    TimerHandle_t timer;
+    DesktopViewPinTimeoutDoneCallback callback;
+    void* context;
+};
+
+typedef struct {
+    uint32_t time_left;
+} DesktopViewPinTimeoutModel;
+
+void desktop_view_pin_timeout_set_callback(
+    DesktopViewPinTimeout* instance,
+    DesktopViewPinTimeoutDoneCallback callback,
+    void* context) {
+    furi_assert(instance);
+
+    instance->callback = callback;
+    instance->context = context;
+}
+
+static void desktop_view_pin_timeout_timer_callback(TimerHandle_t timer) {
+    DesktopViewPinTimeout* instance = pvTimerGetTimerID(timer);
+    bool stop = false;
+
+    DesktopViewPinTimeoutModel* model = view_get_model(instance->view);
+    if(model->time_left > 0) {
+        --model->time_left;
+    } else {
+        stop = true;
+    }
+    view_commit_model(instance->view, true);
+
+    if(stop) {
+        xTimerStop(instance->timer, portMAX_DELAY);
+        instance->callback(instance->context);
+    }
+}
+
+static bool desktop_view_pin_timeout_input(InputEvent* event, void* context) {
+    UNUSED(event);
+    UNUSED(context);
+    return true;
+}
+
+static void desktop_view_pin_timeout_draw(Canvas* canvas, void* _model) {
+    furi_assert(canvas);
+    furi_assert(_model);
+
+    DesktopViewPinTimeoutModel* model = _model;
+
+    canvas_set_font(canvas, FontPrimary);
+    canvas_draw_str(canvas, 36, 31, "Wrong PIN!");
+
+    canvas_set_font(canvas, FontSecondary);
+    char str[30] = {0};
+    snprintf(str, sizeof(str), "Timeout: %lds", model->time_left);
+    canvas_draw_str_aligned(canvas, 64, 38, AlignCenter, AlignCenter, str);
+}
+
+void desktop_view_pin_timeout_free(DesktopViewPinTimeout* instance) {
+    view_free(instance->view);
+    xTimerDelete(instance->timer, portMAX_DELAY);
+
+    free(instance);
+}
+
+DesktopViewPinTimeout* desktop_view_pin_timeout_alloc(void) {
+    DesktopViewPinTimeout* instance = malloc(sizeof(DesktopViewPinTimeout));
+    instance->timer = xTimerCreate(
+        NULL, pdMS_TO_TICKS(1000), pdTRUE, instance, desktop_view_pin_timeout_timer_callback);
+
+    instance->view = view_alloc();
+    view_allocate_model(instance->view, ViewModelTypeLockFree, sizeof(DesktopViewPinTimeoutModel));
+
+    view_set_context(instance->view, instance);
+    view_set_draw_callback(instance->view, desktop_view_pin_timeout_draw);
+    view_set_input_callback(instance->view, desktop_view_pin_timeout_input);
+
+    return instance;
+}
+
+void desktop_view_pin_timeout_start(DesktopViewPinTimeout* instance, uint32_t time_left) {
+    furi_assert(instance);
+
+    DesktopViewPinTimeoutModel* model = view_get_model(instance->view);
+    // no race - always called when timer is stopped
+    model->time_left = time_left;
+    view_commit_model(instance->view, true);
+
+    xTimerStart(instance->timer, portMAX_DELAY);
+}
+
+View* desktop_view_pin_timeout_get_view(DesktopViewPinTimeout* instance) {
+    furi_assert(instance);
+
+    return instance->view;
+}

applications/services/desktop/views/desktop_view_pin_timeout.h

@@ -0,0 +1,16 @@
+#pragma once
+
+#include <stdint.h>
+#include <gui/view.h>
+
+typedef void (*DesktopViewPinTimeoutDoneCallback)(void*);
+typedef struct DesktopViewPinTimeout DesktopViewPinTimeout;
+
+void desktop_view_pin_timeout_set_callback(
+    DesktopViewPinTimeout* instance,
+    DesktopViewPinTimeoutDoneCallback callback,
+    void* context);
+DesktopViewPinTimeout* desktop_view_pin_timeout_alloc(void);
+void desktop_view_pin_timeout_free(DesktopViewPinTimeout*);
+void desktop_view_pin_timeout_start(DesktopViewPinTimeout* instance, uint32_t time_left);
+View* desktop_view_pin_timeout_get_view(DesktopViewPinTimeout* instance);

applications/services/desktop/views/desktop_view_slideshow.c

@@ -0,0 +1,141 @@
+#include <furi.h>
+#include <furi_hal.h>
+#include <gui/elements.h>
+
+#include "desktop_view_slideshow.h"
+#include "../desktop_i.h"
+#include "../helpers/slideshow.h"
+#include "../helpers/slideshow_filename.h"
+
+#define DESKTOP_SLIDESHOW_POWEROFF_SHORT 5000
+#define DESKTOP_SLIDESHOW_POWEROFF_LONG (60 * 60 * 1000)
+
+struct DesktopSlideshowView {
+    View* view;
+    DesktopSlideshowViewCallback callback;
+    void* context;
+    FuriTimer* timer;
+};
+
+typedef struct {
+    uint8_t page;
+    Slideshow* slideshow;
+} DesktopSlideshowViewModel;
+
+static void desktop_view_slideshow_draw(Canvas* canvas, void* model) {
+    DesktopSlideshowViewModel* m = model;
+
+    canvas_clear(canvas);
+    if(slideshow_is_loaded(m->slideshow)) {
+        slideshow_draw(m->slideshow, canvas, 0, 0);
+    }
+}
+
+static bool desktop_view_slideshow_input(InputEvent* event, void* context) {
+    furi_assert(event);
+    DesktopSlideshowView* instance = context;
+
+    DesktopSlideshowViewModel* model = view_get_model(instance->view);
+    bool update_view = false;
+    if(event->type == InputTypeShort) {
+        bool end_slideshow = false;
+        switch(event->key) {
+        case InputKeyLeft:
+            slideshow_goback(model->slideshow);
+            break;
+        case InputKeyRight:
+        case InputKeyOk:
+            end_slideshow = !slideshow_advance(model->slideshow);
+            break;
+        case InputKeyBack:
+            end_slideshow = true;
+        default:
+            break;
+        }
+        if(end_slideshow) {
+            instance->callback(DesktopSlideshowCompleted, instance->context);
+        }
+        update_view = true;
+    } else if(event->key == InputKeyOk) {
+        if(event->type == InputTypePress) {
+            furi_timer_start(instance->timer, DESKTOP_SLIDESHOW_POWEROFF_SHORT);
+        } else if(event->type == InputTypeRelease) {
+            furi_timer_stop(instance->timer);
+            if(!slideshow_is_one_page(model->slideshow)) {
+                furi_timer_start(instance->timer, DESKTOP_SLIDESHOW_POWEROFF_LONG);
+            }
+        }
+    }
+    view_commit_model(instance->view, update_view);
+
+    return true;
+}
+
+static void desktop_first_start_timer_callback(void* context) {
+    DesktopSlideshowView* instance = context;
+    instance->callback(DesktopSlideshowPoweroff, instance->context);
+}
+
+static void desktop_view_slideshow_enter(void* context) {
+    DesktopSlideshowView* instance = context;
+
+    furi_assert(instance->timer == NULL);
+    instance->timer =
+        furi_timer_alloc(desktop_first_start_timer_callback, FuriTimerTypeOnce, instance);
+
+    DesktopSlideshowViewModel* model = view_get_model(instance->view);
+    model->slideshow = slideshow_alloc();
+    if(!slideshow_load(model->slideshow, SLIDESHOW_FS_PATH)) {
+        instance->callback(DesktopSlideshowCompleted, instance->context);
+    } else if(!slideshow_is_one_page(model->slideshow)) {
+        furi_timer_start(instance->timer, DESKTOP_SLIDESHOW_POWEROFF_LONG);
+    }
+    view_commit_model(instance->view, false);
+}
+
+static void desktop_view_slideshow_exit(void* context) {
+    DesktopSlideshowView* instance = context;
+
+    furi_timer_stop(instance->timer);
+    furi_timer_free(instance->timer);
+    instance->timer = NULL;
+
+    DesktopSlideshowViewModel* model = view_get_model(instance->view);
+    slideshow_free(model->slideshow);
+    view_commit_model(instance->view, false);
+}
+
+DesktopSlideshowView* desktop_view_slideshow_alloc() {
+    DesktopSlideshowView* instance = malloc(sizeof(DesktopSlideshowView));
+    instance->view = view_alloc();
+    view_allocate_model(instance->view, ViewModelTypeLocking, sizeof(DesktopSlideshowViewModel));
+    view_set_context(instance->view, instance);
+    view_set_draw_callback(instance->view, (ViewDrawCallback)desktop_view_slideshow_draw);
+    view_set_input_callback(instance->view, desktop_view_slideshow_input);
+    view_set_enter_callback(instance->view, desktop_view_slideshow_enter);
+    view_set_exit_callback(instance->view, desktop_view_slideshow_exit);
+
+    return instance;
+}
+
+void desktop_view_slideshow_free(DesktopSlideshowView* instance) {
+    furi_assert(instance);
+
+    view_free(instance->view);
+    free(instance);
+}
+
+View* desktop_view_slideshow_get_view(DesktopSlideshowView* instance) {
+    furi_assert(instance);
+    return instance->view;
+}
+
+void desktop_view_slideshow_set_callback(
+    DesktopSlideshowView* instance,
+    DesktopSlideshowViewCallback callback,
+    void* context) {
+    furi_assert(instance);
+    furi_assert(callback);
+    instance->callback = callback;
+    instance->context = context;
+}

applications/services/desktop/views/desktop_view_slideshow.h

@@ -0,0 +1,23 @@
+#pragma once
+
+#include <gui/view.h>
+
+#include "desktop_events.h"
+#include "../helpers/slideshow_filename.h"
+
+#define SLIDESHOW_FS_PATH INT_PATH(SLIDESHOW_FILE_NAME)
+
+typedef struct DesktopSlideshowView DesktopSlideshowView;
+
+typedef void (*DesktopSlideshowViewCallback)(DesktopEvent event, void* context);
+
+DesktopSlideshowView* desktop_view_slideshow_alloc();
+
+void desktop_view_slideshow_free(DesktopSlideshowView* main_view);
+
+View* desktop_view_slideshow_get_view(DesktopSlideshowView* main_view);
+
+void desktop_view_slideshow_set_callback(
+    DesktopSlideshowView* main_view,
+    DesktopSlideshowViewCallback callback,
+    void* context);