Start working with LCD color inversion

applications/services/gui/canvas.c

@@ -6,6 +6,8 @@
 #include <stdint.h>
 #include <u8g2_glue.h>
 
+#include <notification/notification_app.h>
+
 const CanvasFontParameters canvas_font_params[FontTotalNumber] = {
     [FontPrimary] = {.leading_default = 12, .leading_min = 11, .height = 8, .descender = 2},
     [FontSecondary] = {.leading_default = 11, .leading_min = 9, .height = 7, .descender = 2},
@@ -141,11 +143,39 @@ const CanvasFontParameters* canvas_get_font_params(const Canvas* canvas, Font fo
 
 void canvas_clear(Canvas* canvas) {
     furi_check(canvas);
+    furi_delay_ms (500);
+    NotificationApp* app = malloc (sizeof(NotificationApp));
+    app = furi_record_open(RECORD_NOTIFICATION);
+
+    // open Notification record for access to NotificationApp settings
+    // NotificationApp* app = malloc (sizeof(NotificationApp));
+    // app = furi_record_open(RECORD_NOTIFICATION);
+    
+    if(app->settings.lcd_inverse) {
+        u8g2_FillBuffer(&canvas->fb);
+    } else {
         u8g2_ClearBuffer(&canvas->fb);
     }
 
+    u8g2_ClearBuffer(&canvas->fb);
+    // furi_record_close (RECORD_NOTIFICATION);
+    // free (app);
+}
+
 void canvas_set_color(Canvas* canvas, Color color) {
     furi_check(canvas);
+    furi_delay_ms (500);
+    // open Notification record for access to NotificationApp settings
+    NotificationApp* app = malloc (sizeof(NotificationApp));
+    app = furi_record_open(RECORD_NOTIFICATION);
+
+    if(app->settings.lcd_inverse) {
+        if(color == ColorBlack) {
+            color = ColorWhite;
+        } else if(color == ColorWhite) {
+            color = ColorBlack;
+        }
+    }
     u8g2_SetDrawColor(&canvas->fb, color);
 }
 
@@ -155,6 +185,23 @@ void canvas_set_font_direction(Canvas* canvas, CanvasDirection dir) {
 }
 
 void canvas_invert_color(Canvas* canvas) {
+
+    // // open Notification record for access to NotificationApp settings
+    // NotificationApp* app = malloc (sizeof(NotificationApp));
+    // app = furi_record_open(RECORD_NOTIFICATION);
+
+    // if((canvas->fb.draw_color == ColorXOR) && app->settings.lcd_inverse) {
+    //     // ColorXOR = 0x02, inversion change it to White = 0x00
+    //     // but if we have lcd_inverse ON then we need Black =0x01 instead White 0x00
+    //     // so we force changing color to black 
+    //     canvas->fb.draw_color = ColorBlack;
+    // } else {
+    //     canvas->fb.draw_color = !canvas->fb.draw_color;
+    // }
+
+    // furi_record_close (RECORD_NOTIFICATION);
+    // free (app);
+
     canvas->fb.draw_color = !canvas->fb.draw_color;
 }
 

applications/services/notification/notification_app.c

@@ -56,10 +56,6 @@ void night_shift_timer_callback(void* context) {
     NotificationApp* app = context;
     DateTime current_date_time;
 
-    // IN DEVELOPMENT
-    // // save current night_shift;
-    // float old_night_shift = app->current_night_shift;
-
     // take system time and convert to minutes
     furi_hal_rtc_get_datetime(&current_date_time);
     uint32_t time = current_date_time.hour * 60 + current_date_time.minute;
@@ -73,12 +69,6 @@ void night_shift_timer_callback(void* context) {
         app->current_night_shift = app->settings.night_shift;
         app->rgb_srv->current_night_shift = app->settings.night_shift;
     }
-
-    // IN DEVELOPMENT
-    // // if night shift was changed then update stock and rgb backlight to new value
-    // if(old_night_shift != app->current_night_shift) {
-    //      notification_message(app, &sequence_display_backlight_on);
-    // }
 }
 
 // --- NIGHT SHIFT END ---

applications/services/notification/notification_app.h

@@ -34,7 +34,7 @@ typedef struct {
     Light light;
 } NotificationLedLayer;
 
-#define NOTIFICATION_SETTINGS_VERSION 0x03
+#define NOTIFICATION_SETTINGS_VERSION 0x04
 #define NOTIFICATION_SETTINGS_PATH    INT_PATH(NOTIFICATION_SETTINGS_FILE_NAME)
 
 typedef struct {
@@ -48,8 +48,11 @@ typedef struct {
     float night_shift;
     uint32_t night_shift_start;
     uint32_t night_shift_end;
+    bool lcd_inverse;
 } NotificationSettings;
 
+//extern NotificationSettings settings;
+
 struct NotificationApp {
     FuriMessageQueue* queue;
     FuriPubSub* event_record;

applications/settings/notification_settings/notification_settings_app.c

@@ -270,6 +270,13 @@ const uint32_t night_shift_end_value[NIGHT_SHIFT_END_COUNT] = {
 
 // --- NIGHT SHIFT END ---
 
+#define LCD_INVERSE_COUNT 2
+const char* const lcd_inverse_text[LCD_INVERSE_COUNT] = {
+    "OFF",
+    "ON",
+};
+const bool lcd_inverse_value[LCD_INVERSE_COUNT] = {false, true};
+
 static void contrast_changed(VariableItem* item) {
     NotificationAppSettings* app = variable_item_get_context(item);
     uint8_t index = variable_item_get_current_value_index(item);
@@ -341,6 +348,16 @@ static void vibro_changed(VariableItem* item) {
     notification_message(app->notification, &sequence_single_vibro);
 }
 
+static void lcd_inverse_changed(VariableItem* item) {
+    NotificationAppSettings* app = variable_item_get_context(item);
+    uint8_t index = variable_item_get_current_value_index(item);
+
+    variable_item_set_current_value_text(item, lcd_inverse_text[index]);
+    app->notification->settings.lcd_inverse = lcd_inverse_value[index];
+    notification_message(app->notification, &sequence_display_backlight_on);
+
+}
+
 //--- RGB BACKLIGHT ---
 
 static void rgb_backlight_installed_changed(VariableItem* item) {
@@ -721,6 +738,13 @@ static NotificationAppSettings* alloc_settings(void) {
         variable_item_set_current_value_text(item, vibro_text[value_index]);
     }
 
+    item = variable_item_list_add(
+        app->variable_item_list, "LCD Inverse", LCD_INVERSE_COUNT, lcd_inverse_changed, app);
+    value_index = value_index_bool(
+        app->notification->settings.lcd_inverse, lcd_inverse_value, LCD_INVERSE_COUNT);
+    variable_item_set_current_value_index(item, value_index);
+    variable_item_set_current_value_text(item, lcd_inverse_text[value_index]);
+
     //--- RGB BACKLIGHT ---
 
     app->variable_item_list_rgb = variable_item_list_alloc();

lib/u8g2/u8g2.h

@@ -3548,6 +3548,7 @@ void u8g2_Setup_a2printer_384x240_f(
 
 void u8g2_SendBuffer(u8g2_t* u8g2);
 void u8g2_ClearBuffer(u8g2_t* u8g2);
+void u8g2_FillBuffer(u8g2_t* u8g2);
 
 void u8g2_SetBufferCurrTileRow(u8g2_t* u8g2, uint8_t row) U8G2_NOINLINE;
 

lib/u8g2/u8g2_buffer.c

@@ -45,6 +45,13 @@ void u8g2_ClearBuffer(u8g2_t* u8g2) {
     memset(u8g2->tile_buf_ptr, 0, cnt);
 }
 
+void u8g2_FillBuffer(u8g2_t* u8g2) {
+    size_t cnt;
+    cnt = u8g2_GetU8x8(u8g2)->display_info->tile_width;
+    cnt *= u8g2->tile_buf_height;
+    cnt *= 8;
+    memset(u8g2->tile_buf_ptr, 255, cnt);
+}
 /*============================================*/
 
 static void u8g2_send_tile_row(u8g2_t* u8g2, uint8_t src_tile_row, uint8_t dest_tile_row) {