385 lines
17 KiB
C
385 lines
17 KiB
C
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#include "bt_hid_keyboard.h"
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#include <furi.h>
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#include <furi_hal_bt_hid.h>
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#include <furi_hal_usb_hid.h>
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#include <gui/elements.h>
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#include <gui/icon_i.h>
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struct BtHidKeyboard {
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View* view;
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};
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typedef struct {
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bool shift;
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bool alt;
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bool ctrl;
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bool gui;
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uint8_t x;
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uint8_t y;
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uint8_t last_key_code;
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uint16_t modifier_code;
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bool ok_pressed;
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bool back_pressed;
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bool connected;
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char key_string[5];
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} BtHidKeyboardModel;
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typedef struct {
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uint8_t width;
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char* key;
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const Icon* icon;
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char* shift_key;
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uint8_t value;
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} BtHidKeyboardKey;
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typedef struct {
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int8_t x;
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int8_t y;
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} BtHidKeyboardPoint;
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// 4 BY 12
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#define MARGIN_TOP 0
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#define MARGIN_LEFT 4
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#define KEY_WIDTH 9
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#define KEY_HEIGHT 12
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#define KEY_PADDING 1
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#define ROW_COUNT 6
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#define COLUMN_COUNT 12
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// 0 width items are not drawn, but there value is used
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const BtHidKeyboardKey bt_hid_keyboard_keyset[ROW_COUNT][COLUMN_COUNT] = {
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{
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{.width = 1, .icon = NULL, .key = "1", .shift_key = "!", .value = HID_KEYBOARD_1},
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{.width = 1, .icon = NULL, .key = "2", .shift_key = "@", .value = HID_KEYBOARD_2},
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{.width = 1, .icon = NULL, .key = "3", .shift_key = "#", .value = HID_KEYBOARD_3},
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{.width = 1, .icon = NULL, .key = "4", .shift_key = "$", .value = HID_KEYBOARD_4},
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{.width = 1, .icon = NULL, .key = "5", .shift_key = "%", .value = HID_KEYBOARD_5},
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{.width = 1, .icon = NULL, .key = "6", .shift_key = "^", .value = HID_KEYBOARD_6},
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{.width = 1, .icon = NULL, .key = "7", .shift_key = "&", .value = HID_KEYBOARD_7},
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{.width = 1, .icon = NULL, .key = "8", .shift_key = "*", .value = HID_KEYBOARD_8},
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{.width = 1, .icon = NULL, .key = "9", .shift_key = "(", .value = HID_KEYBOARD_9},
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{.width = 1, .icon = NULL, .key = "0", .shift_key = ")", .value = HID_KEYBOARD_0},
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{.width = 2, .icon = &I_Pin_arrow_left_9x7, .value = HID_KEYBOARD_DELETE},
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{.width = 0, .value = HID_KEYBOARD_DELETE},
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},
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{
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{.width = 1, .icon = NULL, .key = "q", .shift_key = "Q", .value = HID_KEYBOARD_Q},
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{.width = 1, .icon = NULL, .key = "w", .shift_key = "W", .value = HID_KEYBOARD_W},
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{.width = 1, .icon = NULL, .key = "e", .shift_key = "E", .value = HID_KEYBOARD_E},
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{.width = 1, .icon = NULL, .key = "r", .shift_key = "R", .value = HID_KEYBOARD_R},
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{.width = 1, .icon = NULL, .key = "t", .shift_key = "T", .value = HID_KEYBOARD_T},
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{.width = 1, .icon = NULL, .key = "y", .shift_key = "Y", .value = HID_KEYBOARD_Y},
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{.width = 1, .icon = NULL, .key = "u", .shift_key = "U", .value = HID_KEYBOARD_U},
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{.width = 1, .icon = NULL, .key = "i", .shift_key = "I", .value = HID_KEYBOARD_I},
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{.width = 1, .icon = NULL, .key = "o", .shift_key = "O", .value = HID_KEYBOARD_O},
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{.width = 1, .icon = NULL, .key = "p", .shift_key = "P", .value = HID_KEYBOARD_P},
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{.width = 1, .icon = NULL, .key = "[", .shift_key = "{", .value = HID_KEYBOARD_OPEN_BRACKET},
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{.width = 1,
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.icon = NULL,
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.key = "]",
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.shift_key = "}",
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.value = HID_KEYBOARD_CLOSE_BRACKET},
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},
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{
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{.width = 1, .icon = NULL, .key = "a", .shift_key = "A", .value = HID_KEYBOARD_A},
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{.width = 1, .icon = NULL, .key = "s", .shift_key = "S", .value = HID_KEYBOARD_S},
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{.width = 1, .icon = NULL, .key = "d", .shift_key = "D", .value = HID_KEYBOARD_D},
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{.width = 1, .icon = NULL, .key = "f", .shift_key = "F", .value = HID_KEYBOARD_F},
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{.width = 1, .icon = NULL, .key = "g", .shift_key = "G", .value = HID_KEYBOARD_G},
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{.width = 1, .icon = NULL, .key = "h", .shift_key = "H", .value = HID_KEYBOARD_H},
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{.width = 1, .icon = NULL, .key = "j", .shift_key = "J", .value = HID_KEYBOARD_J},
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{.width = 1, .icon = NULL, .key = "k", .shift_key = "K", .value = HID_KEYBOARD_K},
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{.width = 1, .icon = NULL, .key = "l", .shift_key = "L", .value = HID_KEYBOARD_L},
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{.width = 1, .icon = NULL, .key = ";", .shift_key = ":", .value = HID_KEYBOARD_SEMICOLON},
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{.width = 2, .icon = &I_Pin_arrow_right_9x7, .value = HID_KEYBOARD_RETURN},
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{.width = 0, .value = HID_KEYBOARD_RETURN},
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},
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{
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{.width = 1, .icon = NULL, .key = "z", .shift_key = "Z", .value = HID_KEYBOARD_Z},
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{.width = 1, .icon = NULL, .key = "x", .shift_key = "X", .value = HID_KEYBOARD_X},
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{.width = 1, .icon = NULL, .key = "c", .shift_key = "C", .value = HID_KEYBOARD_C},
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{.width = 1, .icon = NULL, .key = "v", .shift_key = "V", .value = HID_KEYBOARD_V},
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{.width = 1, .icon = NULL, .key = "b", .shift_key = "B", .value = HID_KEYBOARD_B},
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{.width = 1, .icon = NULL, .key = "n", .shift_key = "N", .value = HID_KEYBOARD_N},
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{.width = 1, .icon = NULL, .key = "m", .shift_key = "M", .value = HID_KEYBOARD_M},
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{.width = 1, .icon = NULL, .key = "/", .shift_key = "?", .value = HID_KEYBOARD_SLASH},
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{.width = 1, .icon = NULL, .key = "\\", .shift_key = "|", .value = HID_KEYBOARD_BACKSLASH},
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{.width = 1, .icon = NULL, .key = "`", .shift_key = "~", .value = HID_KEYBOARD_GRAVE_ACCENT},
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{.width = 1, .icon = &I_ButtonUp_7x4, .value = HID_KEYBOARD_UP_ARROW},
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{.width = 1, .icon = NULL, .key = "-", .shift_key = "_", .value = HID_KEYBOARD_MINUS},
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},
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{
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{.width = 1, .icon = &I_Pin_arrow_up7x9, .value = HID_KEYBOARD_L_SHIFT},
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{.width = 1, .icon = NULL, .key = ",", .shift_key = "<", .value = HID_KEYPAD_COMMA},
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{.width = 1, .icon = NULL, .key = ".", .shift_key = ">", .value = HID_KEYBOARD_DOT},
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{.width = 4, .icon = NULL, .key = " ", .value = HID_KEYBOARD_SPACEBAR},
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{.width = 0, .value = HID_KEYBOARD_SPACEBAR},
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{.width = 0, .value = HID_KEYBOARD_SPACEBAR},
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{.width = 0, .value = HID_KEYBOARD_SPACEBAR},
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{.width = 1, .icon = NULL, .key = "'", .shift_key = "\"", .value = HID_KEYBOARD_APOSTROPHE},
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{.width = 1, .icon = NULL, .key = "=", .shift_key = "+", .value = HID_KEYBOARD_EQUAL_SIGN},
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{.width = 1, .icon = &I_ButtonLeft_4x7, .value = HID_KEYBOARD_LEFT_ARROW},
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{.width = 1, .icon = &I_ButtonDown_7x4, .value = HID_KEYBOARD_DOWN_ARROW},
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{.width = 1, .icon = &I_ButtonRight_4x7, .value = HID_KEYBOARD_RIGHT_ARROW},
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},
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{
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{.width = 3, .icon = NULL, .key = "Ctrl", .value = HID_KEYBOARD_L_CTRL},
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{.width = 0, .icon = NULL, .value = HID_KEYBOARD_L_CTRL},
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{.width = 0, .icon = NULL, .value = HID_KEYBOARD_L_CTRL},
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{.width = 3, .icon = NULL, .key = "Alt", .value = HID_KEYBOARD_L_ALT},
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{.width = 0, .icon = NULL, .value = HID_KEYBOARD_L_ALT},
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{.width = 0, .icon = NULL, .value = HID_KEYBOARD_L_ALT},
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{.width = 3, .icon = NULL, .key = "Cmd", .value = HID_KEYBOARD_L_GUI},
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{.width = 0, .icon = NULL, .value = HID_KEYBOARD_L_GUI},
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{.width = 0, .icon = NULL, .value = HID_KEYBOARD_L_GUI},
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{.width = 3, .icon = NULL, .key = "Tab", .value = HID_KEYBOARD_TAB},
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{.width = 0, .icon = NULL, .value = HID_KEYBOARD_TAB},
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{.width = 0, .icon = NULL, .value = HID_KEYBOARD_TAB},
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},
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};
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static void bt_hid_keyboard_to_upper(char* str) {
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while(*str) {
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*str = toupper((unsigned char)*str);
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str++;
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}
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}
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static void bt_hid_keyboard_draw_key(
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Canvas* canvas,
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BtHidKeyboardModel* model,
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uint8_t x,
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uint8_t y,
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BtHidKeyboardKey key,
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bool selected) {
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if(!key.width) return;
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canvas_set_color(canvas, ColorBlack);
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uint8_t keyWidth = KEY_WIDTH * key.width + KEY_PADDING * (key.width - 1);
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if(selected) {
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// Draw a filled box
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elements_slightly_rounded_box(
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canvas,
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MARGIN_LEFT + x * (KEY_WIDTH + KEY_PADDING),
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MARGIN_TOP + y * (KEY_HEIGHT + KEY_PADDING),
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keyWidth,
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KEY_HEIGHT);
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canvas_set_color(canvas, ColorWhite);
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} else {
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// Draw a framed box
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elements_slightly_rounded_frame(
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canvas,
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MARGIN_LEFT + x * (KEY_WIDTH + KEY_PADDING),
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MARGIN_TOP + y * (KEY_HEIGHT + KEY_PADDING),
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keyWidth,
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KEY_HEIGHT);
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}
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if(key.icon != NULL) {
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// Draw the icon centered on the button
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canvas_draw_icon(
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canvas,
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MARGIN_LEFT + x * (KEY_WIDTH + KEY_PADDING) + keyWidth / 2 - key.icon->width / 2,
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MARGIN_TOP + y * (KEY_HEIGHT + KEY_PADDING) + KEY_HEIGHT / 2 - key.icon->height / 2,
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key.icon);
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} else {
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// If shift is toggled use the shift key when available
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strcpy(model->key_string, (model->shift && key.shift_key != 0) ? key.shift_key : key.key);
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// Upper case if ctrl or alt was toggled true
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if((model->ctrl && key.value == HID_KEYBOARD_L_CTRL) ||
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(model->alt && key.value == HID_KEYBOARD_L_ALT) ||
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(model->gui && key.value == HID_KEYBOARD_L_GUI)) {
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bt_hid_keyboard_to_upper(model->key_string);
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}
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canvas_draw_str_aligned(
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canvas,
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MARGIN_LEFT + x * (KEY_WIDTH + KEY_PADDING) + keyWidth / 2 + 1,
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MARGIN_TOP + y * (KEY_HEIGHT + KEY_PADDING) + KEY_HEIGHT / 2,
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AlignCenter,
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AlignCenter,
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model->key_string);
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}
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}
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static void bt_hid_keyboard_draw_callback(Canvas* canvas, void* context) {
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furi_assert(context);
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BtHidKeyboardModel* model = context;
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// Header
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if(!model->connected) {
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canvas_draw_icon(canvas, 0, 0, &I_Ble_disconnected_15x15);
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canvas_set_font(canvas, FontPrimary);
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elements_multiline_text_aligned(canvas, 17, 3, AlignLeft, AlignTop, "Keyboard");
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elements_multiline_text_aligned(
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canvas, 4, 60, AlignLeft, AlignBottom, "Waiting for Connection...");
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return; // Dont render the keyboard if we are not yet connected
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}
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canvas_set_font(canvas, FontKeyboard);
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// Start shifting the all keys up if on the next row (Scrolling)
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uint8_t initY = model->y - 4 > 0 ? model->y - 4 : 0;
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for(uint8_t y = initY; y < ROW_COUNT; y++) {
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const BtHidKeyboardKey* keyboardKeyRow = bt_hid_keyboard_keyset[y];
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uint8_t x = 0;
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for(uint8_t i = 0; i < COLUMN_COUNT; i++) {
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BtHidKeyboardKey key = keyboardKeyRow[i];
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// Select when the button is hovered
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// Select if the button is hovered within its width
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// Select if back is clicked and its the backspace key
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// Deselect when the button clicked or not hovered
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bool keySelected = (x <= model->x && model->x < (x + key.width)) && y == model->y;
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bool backSelected = model->back_pressed && key.value == HID_KEYBOARD_DELETE;
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bt_hid_keyboard_draw_key(
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canvas,
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model,
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x,
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y - initY,
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key,
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(!model->ok_pressed && keySelected) || backSelected);
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x += key.width;
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}
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}
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}
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static uint8_t bt_hid_keyboard_get_selected_key(BtHidKeyboardModel* model) {
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BtHidKeyboardKey key = bt_hid_keyboard_keyset[model->y][model->x];
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// Use upper case if shift is toggled
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bool useUppercase = model->shift;
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// Check if the key has an upper case version
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bool hasUppercase = key.shift_key != 0;
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if(useUppercase && hasUppercase)
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return key.value;
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else
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return key.value;
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}
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static void bt_hid_keyboard_get_select_key(BtHidKeyboardModel* model, BtHidKeyboardPoint delta) {
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// Keep going until a valid spot is found, this allows for nulls and zero width keys in the map
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do {
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if(((int8_t)model->y) + delta.y < 0)
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model->y = ROW_COUNT - 1;
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else
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model->y = (model->y + delta.y) % ROW_COUNT;
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} while(delta.y != 0 && bt_hid_keyboard_keyset[model->y][model->x].value == 0);
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do {
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if(((int8_t)model->x) + delta.x < 0)
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model->x = COLUMN_COUNT - 1;
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else
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model->x = (model->x + delta.x) % COLUMN_COUNT;
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} while(delta.x != 0 && bt_hid_keyboard_keyset[model->y][model->x].width ==
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0); // Skip zero width keys, pretend they are one key
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}
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static void bt_hid_keyboard_process(BtHidKeyboard* bt_hid_keyboard, InputEvent* event) {
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with_view_model(
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bt_hid_keyboard->view, (BtHidKeyboardModel * model) {
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if(event->key == InputKeyOk) {
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if(event->type == InputTypePress) {
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model->ok_pressed = true;
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} else if(event->type == InputTypeLong || event->type == InputTypeShort) {
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model->last_key_code = bt_hid_keyboard_get_selected_key(model);
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// Toggle the modifier key when clicked, and click the key
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if(model->last_key_code == HID_KEYBOARD_L_SHIFT) {
|
||
|
|
model->shift = !model->shift;
|
||
|
|
if(model->shift)
|
||
|
|
model->modifier_code |= KEY_MOD_LEFT_SHIFT;
|
||
|
|
else
|
||
|
|
model->modifier_code &= ~KEY_MOD_LEFT_SHIFT;
|
||
|
|
} else if(model->last_key_code == HID_KEYBOARD_L_ALT) {
|
||
|
|
model->alt = !model->alt;
|
||
|
|
if(model->alt)
|
||
|
|
model->modifier_code |= KEY_MOD_LEFT_ALT;
|
||
|
|
else
|
||
|
|
model->modifier_code &= ~KEY_MOD_LEFT_ALT;
|
||
|
|
} else if(model->last_key_code == HID_KEYBOARD_L_CTRL) {
|
||
|
|
model->ctrl = !model->ctrl;
|
||
|
|
if(model->ctrl)
|
||
|
|
model->modifier_code |= KEY_MOD_LEFT_CTRL;
|
||
|
|
else
|
||
|
|
model->modifier_code &= ~KEY_MOD_LEFT_CTRL;
|
||
|
|
} else if(model->last_key_code == HID_KEYBOARD_L_GUI) {
|
||
|
|
model->gui = !model->gui;
|
||
|
|
if(model->gui)
|
||
|
|
model->modifier_code |= KEY_MOD_LEFT_GUI;
|
||
|
|
else
|
||
|
|
model->modifier_code &= ~KEY_MOD_LEFT_GUI;
|
||
|
|
}
|
||
|
|
furi_hal_bt_hid_kb_press(model->modifier_code | model->last_key_code);
|
||
|
|
} else if(event->type == InputTypeRelease) {
|
||
|
|
// Release happens after short and long presses
|
||
|
|
furi_hal_bt_hid_kb_release(model->modifier_code | model->last_key_code);
|
||
|
|
model->ok_pressed = false;
|
||
|
|
}
|
||
|
|
} else if(event->key == InputKeyBack) {
|
||
|
|
// If back is pressed for a short time, backspace
|
||
|
|
if(event->type == InputTypePress) {
|
||
|
|
model->back_pressed = true;
|
||
|
|
} else if(event->type == InputTypeShort) {
|
||
|
|
furi_hal_bt_hid_kb_press(HID_KEYBOARD_DELETE);
|
||
|
|
furi_hal_bt_hid_kb_release(HID_KEYBOARD_DELETE);
|
||
|
|
} else if(event->type == InputTypeRelease) {
|
||
|
|
model->back_pressed = false;
|
||
|
|
}
|
||
|
|
} else if(event->type == InputTypePress || event->type == InputTypeRepeat) {
|
||
|
|
// Cycle the selected keys
|
||
|
|
if(event->key == InputKeyUp) {
|
||
|
|
bt_hid_keyboard_get_select_key(model, (BtHidKeyboardPoint){.x = 0, .y = -1});
|
||
|
|
} else if(event->key == InputKeyDown) {
|
||
|
|
bt_hid_keyboard_get_select_key(model, (BtHidKeyboardPoint){.x = 0, .y = 1});
|
||
|
|
} else if(event->key == InputKeyLeft) {
|
||
|
|
bt_hid_keyboard_get_select_key(model, (BtHidKeyboardPoint){.x = -1, .y = 0});
|
||
|
|
} else if(event->key == InputKeyRight) {
|
||
|
|
bt_hid_keyboard_get_select_key(model, (BtHidKeyboardPoint){.x = 1, .y = 0});
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
static bool bt_hid_keyboard_input_callback(InputEvent* event, void* context) {
|
||
|
|
furi_assert(context);
|
||
|
|
BtHidKeyboard* bt_hid_keyboard = context;
|
||
|
|
bool consumed = false;
|
||
|
|
|
||
|
|
if(event->type == InputTypeLong && event->key == InputKeyBack) {
|
||
|
|
furi_hal_bt_hid_kb_release_all();
|
||
|
|
} else {
|
||
|
|
bt_hid_keyboard_process(bt_hid_keyboard, event);
|
||
|
|
consumed = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
return consumed;
|
||
|
|
}
|
||
|
|
|
||
|
|
BtHidKeyboard* bt_hid_keyboard_alloc() {
|
||
|
|
BtHidKeyboard* bt_hid_keyboard = malloc(sizeof(BtHidKeyboard));
|
||
|
|
bt_hid_keyboard->view = view_alloc();
|
||
|
|
view_set_context(bt_hid_keyboard->view, bt_hid_keyboard);
|
||
|
|
view_allocate_model(bt_hid_keyboard->view, ViewModelTypeLocking, sizeof(BtHidKeyboardModel));
|
||
|
|
view_set_draw_callback(bt_hid_keyboard->view, bt_hid_keyboard_draw_callback);
|
||
|
|
view_set_input_callback(bt_hid_keyboard->view, bt_hid_keyboard_input_callback);
|
||
|
|
|
||
|
|
return bt_hid_keyboard;
|
||
|
|
}
|
||
|
|
|
||
|
|
void bt_hid_keyboard_free(BtHidKeyboard* bt_hid_keyboard) {
|
||
|
|
furi_assert(bt_hid_keyboard);
|
||
|
|
view_free(bt_hid_keyboard->view);
|
||
|
|
free(bt_hid_keyboard);
|
||
|
|
}
|
||
|
|
|
||
|
|
View* bt_hid_keyboard_get_view(BtHidKeyboard* bt_hid_keyboard) {
|
||
|
|
furi_assert(bt_hid_keyboard);
|
||
|
|
return bt_hid_keyboard->view;
|
||
|
|
}
|
||
|
|
|
||
|
|
void bt_hid_keyboard_set_connected_status(BtHidKeyboard* bt_hid_keyboard, bool connected) {
|
||
|
|
furi_assert(bt_hid_keyboard);
|
||
|
|
with_view_model(
|
||
|
|
bt_hid_keyboard->view, (BtHidKeyboardModel * model) {
|
||
|
|
model->connected = connected;
|
||
|
|
return true;
|
||
|
|
});
|
||
|
|
}
|