Add experimental dark mode setting

applications/services/gui/canvas.c

@@ -6,6 +6,7 @@
 #include <furi_hal.h>
 #include <stdint.h>
 #include <u8g2_glue.h>
+#include <xtreme/settings.h>
 
 const CanvasFontParameters canvas_font_params[FontTotalNumber] = {
     [FontPrimary] = {.leading_default = 12, .leading_min = 11, .height = 8, .descender = 2},
@@ -105,11 +106,22 @@ CanvasFontParameters* canvas_get_font_params(Canvas* canvas, Font font) {
 
 void canvas_clear(Canvas* canvas) {
     furi_assert(canvas);
-    u8g2_ClearBuffer(&canvas->fb);
+    if(XTREME_SETTINGS()->dark_mode) {
+        u8g2_FillBuffer(&canvas->fb);
+    } else {
+        u8g2_ClearBuffer(&canvas->fb);
+    }
 }
 
 void canvas_set_color(Canvas* canvas, Color color) {
     furi_assert(canvas);
+    if(XTREME_SETTINGS()->dark_mode) {
+        if(color == ColorBlack) {
+            color = ColorWhite;
+        } else if(color == ColorWhite) {
+            color = ColorBlack;
+        }
+    }
     u8g2_SetDrawColor(&canvas->fb, color);
 }
 

applications/services/xtreme/settings.c

@@ -39,8 +39,9 @@ void XTREME_SETTINGS_LOAD() {
             xtreme_settings->bar_borders = true; // ON
             xtreme_settings->bar_background = false; // OFF
             xtreme_settings->bad_bt = false; // USB
-            xtreme_settings->sort_dirs_first = true; // ON
             xtreme_settings->butthurt_timer = 43200; // 12 H
+            xtreme_settings->sort_dirs_first = true; // ON
+            xtreme_settings->dark_mode = false; // OFF
         }
     }
 }

applications/services/xtreme/settings.h

@@ -11,7 +11,7 @@
 
 #define MAX_PACK_NAME_LEN 32
 
-#define XTREME_SETTINGS_VERSION (3)
+#define XTREME_SETTINGS_VERSION (4)
 #define XTREME_SETTINGS_PATH INT_PATH(XTREME_SETTINGS_FILE_NAME)
 #define XTREME_SETTINGS_MAGIC (0x69)
 
@@ -28,8 +28,9 @@ typedef struct {
     bool bar_borders;
     bool bar_background;
     bool bad_bt;
-    bool sort_dirs_first;
     int32_t butthurt_timer;
+    bool sort_dirs_first;
+    bool dark_mode;
 } XtremeSettings;
 
 XtremeSettings* XTREME_SETTINGS();