flipperzero-firmware/applications/gui/modules/text_box.c
SG 274c12fc56
[FL-2274] Inventing streams and moving FFF to them (#981)
* Streams: string stream
* String stream: updated insert/delete api
* Streams: generic stream interface and string stream implementation
* Streams: helpers for insert and delete_and_insert
* FFF: now compatible with streams
* MinUnit: introduced tests with arguments
* FFF: stream access violation
* Streams: copy data between streams
* Streams: file stream
* FFF: documentation
* FFStream: documentation
* FFF: alloc as file
* MinUnit: support for nested tests
* Streams: changed delete_and_insert, now it returns success flag. Added ability dump stream inner parameters and data to cout.
* FFF: simplified file open function
* Streams: unit tests
* FFF: tests
* Streams: declare cache_size constant as define, to allow variable modified arrays
* FFF: lib moved to a separate folder
* iButton: new FFF
* RFID: new FFF
* Animations: new FFF
* IR: new FFF
* NFC: new FFF
* Flipper file format: delete lib
* U2F: new FFF
* Subghz: new FFF and streams
* Streams: read line
* Streams: split
* FuriCore: implement memset with extra asserts
* FuriCore: implement extra heap asserts without inventing memset
* Scene manager: protected access to the scene id stack with a size check
* NFC worker: dirty fix for issue where hal_nfc was busy on app start
* Furi: update allocator to erase memory on allocation. Replace furi_alloc with malloc.
* FuriCore: cleanup memmgr code.
* Furi HAL: furi_hal_init is split into critical and non-critical parts. The critical part is currently clock and console.
* Memmgr: added ability to track allocations and deallocations through console.
* FFStream: some speedup
* Streams, FF: minor fixes
* Tests: restore
* File stream: a slightly more thread-safe version of file_stream_delete_and_insert

Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com>
2022-02-18 22:53:46 +03:00

213 lines
5.9 KiB
C
Executable File

#include "text_box.h"
#include "gui/canvas.h"
#include <m-string.h>
#include <furi.h>
#include <gui/elements.h>
#include <stdint.h>
struct TextBox {
View* view;
};
typedef struct {
const char* text;
char* text_pos;
string_t text_formatted;
int32_t scroll_pos;
int32_t scroll_num;
TextBoxFont font;
TextBoxFocus focus;
bool formatted;
} TextBoxModel;
static void text_box_process_down(TextBox* text_box) {
with_view_model(
text_box->view, (TextBoxModel * model) {
if(model->scroll_pos < model->scroll_num - 1) {
model->scroll_pos++;
// Search next line start
while(*model->text_pos++ != '\n')
;
}
return true;
});
}
static void text_box_process_up(TextBox* text_box) {
with_view_model(
text_box->view, (TextBoxModel * model) {
if(model->scroll_pos > 0) {
model->scroll_pos--;
// Reach last symbol of previous line
model->text_pos--;
// Search prevous line start
while((model->text_pos != model->text) && (*(--model->text_pos) != '\n'))
;
if(*model->text_pos == '\n') {
model->text_pos++;
}
}
return true;
});
}
static void text_box_insert_endline(Canvas* canvas, TextBoxModel* model) {
size_t i = 0;
size_t line_width = 0;
const char* str = model->text;
size_t line_num = 0;
const size_t text_width = 140;
while(str[i] != '\0') {
char symb = str[i++];
if(symb != '\n') {
line_width += canvas_glyph_width(canvas, symb) + 1;
if(line_width > text_width) {
line_num++;
line_width = 0;
string_push_back(model->text_formatted, '\n');
}
} else {
line_num++;
line_width = 0;
}
string_push_back(model->text_formatted, symb);
}
line_num++;
model->text = string_get_cstr(model->text_formatted);
model->text_pos = (char*)model->text;
if(model->focus == TextBoxFocusEnd && line_num > 5) {
// Set text position to 5th line from the end
for(uint8_t i = 0; i < line_num - 5; i++) {
while(*model->text_pos++ != '\n') {
};
}
model->scroll_num = line_num - 4;
model->scroll_pos = line_num - 5;
} else {
model->scroll_num = MAX(line_num - 4, 0);
model->scroll_pos = 0;
}
}
static void text_box_view_draw_callback(Canvas* canvas, void* _model) {
TextBoxModel* model = _model;
if(!model->formatted) {
text_box_insert_endline(canvas, model);
model->formatted = true;
}
canvas_clear(canvas);
elements_slightly_rounded_frame(canvas, 0, 0, 124, 64);
if(model->font == TextBoxFontText) {
canvas_set_font(canvas, FontSecondary);
} else if(model->font == TextBoxFontHex) {
canvas_set_font(canvas, FontKeyboard);
}
elements_multiline_text(canvas, 3, 11, model->text_pos);
elements_scrollbar(canvas, model->scroll_pos, model->scroll_num);
}
static bool text_box_view_input_callback(InputEvent* event, void* context) {
furi_assert(context);
TextBox* text_box = context;
bool consumed = false;
if(event->type == InputTypeShort) {
if(event->key == InputKeyDown) {
text_box_process_down(text_box);
consumed = true;
} else if(event->key == InputKeyUp) {
text_box_process_up(text_box);
consumed = true;
}
}
return consumed;
}
TextBox* text_box_alloc() {
TextBox* text_box = malloc(sizeof(TextBox));
text_box->view = view_alloc();
view_set_context(text_box->view, text_box);
view_allocate_model(text_box->view, ViewModelTypeLocking, sizeof(TextBoxModel));
view_set_draw_callback(text_box->view, text_box_view_draw_callback);
view_set_input_callback(text_box->view, text_box_view_input_callback);
with_view_model(
text_box->view, (TextBoxModel * model) {
model->text = NULL;
string_init_set_str(model->text_formatted, "");
model->formatted = false;
model->font = TextBoxFontText;
return true;
});
return text_box;
}
void text_box_free(TextBox* text_box) {
furi_assert(text_box);
with_view_model(
text_box->view, (TextBoxModel * model) {
string_clear(model->text_formatted);
return true;
});
view_free(text_box->view);
free(text_box);
}
View* text_box_get_view(TextBox* text_box) {
furi_assert(text_box);
return text_box->view;
}
void text_box_reset(TextBox* text_box) {
furi_assert(text_box);
with_view_model(
text_box->view, (TextBoxModel * model) {
model->text = NULL;
string_set_str(model->text_formatted, "");
model->font = TextBoxFontText;
model->focus = TextBoxFocusStart;
return true;
});
}
void text_box_set_text(TextBox* text_box, const char* text) {
furi_assert(text_box);
furi_assert(text);
with_view_model(
text_box->view, (TextBoxModel * model) {
model->text = text;
string_reset(model->text_formatted);
string_reserve(model->text_formatted, strlen(text));
model->formatted = false;
return true;
});
}
void text_box_set_font(TextBox* text_box, TextBoxFont font) {
furi_assert(text_box);
with_view_model(
text_box->view, (TextBoxModel * model) {
model->font = font;
return true;
});
}
void text_box_set_focus(TextBox* text_box, TextBoxFocus focus) {
furi_assert(text_box);
with_view_model(
text_box->view, (TextBoxModel * model) {
model->focus = focus;
return true;
});
}