refactor canvas

applications/gui/canvas.c

@@ -6,74 +6,104 @@
 #include <u8g2.h>
 
 struct Canvas {
-    FuriRecordSubscriber* fb_record;
-    u8g2_t* fb;
+    u8g2_t fb;
     uint8_t offset_x;
     uint8_t offset_y;
     uint8_t width;
     uint8_t height;
 };
 
-Canvas* canvas_alloc() {
-    Canvas* canvas = furi_alloc(sizeof(Canvas));
-    canvas->fb_record = furi_open_deprecated("u8g2_fb", false, false, NULL, NULL, NULL);
-    assert(canvas->fb_record);
-    return canvas;
+uint8_t canvas_width(CanvasApi* api);
+uint8_t canvas_height(CanvasApi* api);
+void canvas_clear(CanvasApi* api);
+void canvas_color_set(CanvasApi* api, uint8_t color);
+void canvas_font_set(CanvasApi* api, Font font);
+void canvas_str_draw(CanvasApi* api, uint8_t x, uint8_t y, const char* str);
+
+CanvasApi* canvas_api_init() {
+    CanvasApi* api = furi_alloc(sizeof(CanvasApi));
+
+    u8g2_t _u8g2;
+    u8g2_Setup_st7565_erc12864_alt_f(
+        &api->canvas.fb, U8G2_R0, u8x8_hw_spi_stm32, u8g2_gpio_and_delay_stm32);
+    u8g2_InitDisplay(
+        &canvas->fb); // send init sequence to the display, display is in sleep mode after this
+    u8g2_SetContrast(&api->canvas.fb, 36);
+
+    u8g2_SetPowerSave(&api->canvas.fb, 0); // wake up display
+    u8g2_SendBuffer(&api->canvas.fb);
+
+    api->width = canvas_width;
+    api->height = canvas_height;
+    api->clear = canvas_clear;
+    api->canvas_color_set = canvas_color_set;
+    api->canvas_font_set = canvas_font_set;
+    api->draw_str = canvas_str_draw;
+
+    api->fonts = {
+        .primary = u8g2_font_Born2bSportyV2_tr,
+        .secondary = u8g2_font_HelvetiPixel_tr,
+    };
+
+    return api;
 }
 
-void canvas_free(Canvas* canvas) {
-    assert(canvas);
-    free(canvas);
+void canvas_api_free(CanvasApi* api) {
+    assert(api);
+    free(api);
 }
 
-void canvas_commit(Canvas* canvas) {
-    assert(canvas);
-    if(canvas->fb) {
-        furi_commit(canvas->fb_record);
-        canvas->fb = NULL;
-    }
+void canvas_commit(CanvasApi* api) {
+    assert(api);
+
+    u8g2_SetPowerSave(&api->canvas.fb, 0); // wake up display
+    u8g2_SendBuffer(&api->canvas.fb);
 }
 
 void canvas_frame_set(
-    Canvas* canvas,
+    CanvasApi* api,
     uint8_t offset_x,
     uint8_t offset_y,
     uint8_t width,
     uint8_t height) {
-    assert(canvas);
-    canvas->offset_x = offset_x;
-    canvas->offset_y = offset_y;
-    canvas->width = width;
-    canvas->height = height;
+    assert(api);
+    api->canvas.offset_x = offset_x;
+    api->canvas.offset_y = offset_y;
+    api->canvas.width = width;
+    api->canvas.height = height;
 }
 
-u8g2_t* canvas_fb(Canvas* canvas) {
-    if(!canvas->fb) {
-        canvas->fb = furi_take(canvas->fb_record);
-        assert(canvas->fb);
-    }
-    return canvas->fb;
+uint8_t canvas_width(CanvasApi* api) {
+    assert(api);
+
+    return api->canvas.width;
 }
 
-void canvas_clear(Canvas* canvas) {
-    u8g2_t* fb = canvas_fb(canvas);
-    u8g2_ClearBuffer(fb);
+uint8_t canvas_height(CanvasApi* api) {
+    assert(api);
+
+    return api->canvas.height;
 }
 
-void canvas_color_set(Canvas* canvas, uint8_t color) {
-    u8g2_t* fb = canvas_fb(canvas);
-    u8g2_SetDrawColor(fb, 1);
+void canvas_clear(CanvasApi* api) {
+    assert(api);
+    u8g2_ClearBuffer(&api->canvas.fb);
 }
 
-void canvas_font_set(Canvas* canvas, font_t font) {
-    u8g2_t* fb = canvas_fb(canvas);
-    u8g2_SetFontMode(fb, 1);
-    u8g2_SetFont(fb, font);
+void canvas_color_set(CanvasApi* api, Color color) {
+    assert(api);
+    u8g2_SetDrawColor(&api->canvas.fb, color);
 }
 
-void canvas_str_draw(Canvas* canvas, uint8_t x, uint8_t y, const char* str) {
-    x += canvas->offset_x;
-    y += canvas->offset_y;
-    u8g2_t* fb = canvas_fb(canvas);
-    u8g2_DrawStr(fb, x, y, str);
+void canvas_font_set(CanvasApi* api, Font font) {
+    assert(api);
+    u8g2_SetFontMode(&api->canvas.fb, 1);
+    u8g2_SetFont(&api->canvas.fb, font);
+}
+
+void canvas_str_draw(CanvasApi* api, uint8_t x, uint8_t y, const char* str) {
+    assert(api);
+    x += api->canvas.offset_x;
+    y += api->canvas.offset_y;
+    u8g2_DrawStr(&api->canvas.fb, x, y, str);
 }