Add legacy animations support

README.md

@@ -12,13 +12,12 @@ A more customizable replacement for the built-in Pebble action bar.
 - Custom height
 - Custom x/y positions
 - Legacy Pebble SDK 2.X-style preset
+    - Includes corner radius, shortened height, and invert-style press animations
 ### Removed Features
 - Anything to do with back button overrides
 - Fully custom animations
-    - Built-in animations can still be customized
+    - Built-in move animations can still be customized
         - Duration, move distance/direction, and move axis are all configurable
 - Round style
     - Using a rectangular bar on a round watch saves space and IMO looks way better
         - Use custom corner radius for a nice effect on round watches!
-### Pending Features
-- Legacy (background invert) animations support

src/c/neat_bar.c

@@ -90,6 +90,12 @@ static void s_animate_icon(NeatBarLayer *neat_bar, uint8_t button_index, bool is
 		*pressed = false;
 	}
 
+	// legacy animation: no icon movement, just invert the background third
+	if (neat_bar->animations_legacy_pressed_color) {
+		layer_mark_dirty(neat_bar->main_layer);
+		return;
+	}
+
 	Layer *layer = bitmap_layer_get_layer(bitmap_layer);
 	GRect home = s_get_home_frame(neat_bar, button_index);
 
@@ -139,9 +145,28 @@ static void s_select_up_handler(ClickRecognizerRef recognizer, void *context) {
 }
 
 static void s_main_layer_update_proc(Layer *layer, GContext *ctx) {
+	NeatBarLayer *neat_bar = s_current_neat_bar;
+	GRect bounds = layer_get_bounds(layer);
+
 	graphics_context_set_antialiased(ctx, false);
-	graphics_context_set_fill_color(ctx, s_current_neat_bar->background_color);
+	graphics_context_set_fill_color(ctx, neat_bar->background_color);
-	graphics_fill_rect(ctx, layer_get_bounds(layer), s_current_neat_bar->corner_radius, s_current_neat_bar->x_offset > 0 ? GCornersAll : GCornersLeft);
+	graphics_fill_rect(ctx, bounds, neat_bar->corner_radius, neat_bar->x_offset > 0 ? GCornersAll : GCornersLeft);
+
+	// Legacy animation: invert the background third for any pressed button
+	if (neat_bar->animations_legacy_pressed_color) {
+		int16_t third_height = bounds.size.h / 3;
+		graphics_context_set_fill_color(ctx, *neat_bar->animations_legacy_pressed_color);
+
+		if (neat_bar->up_pressed) {
+			graphics_fill_rect(ctx, GRect(1, 1, bounds.size.w - 2, third_height - 2), 0, GCornerNone);
+		}
+		if (neat_bar->select_pressed) {
+			graphics_fill_rect(ctx, GRect(1, third_height + 1, bounds.size.w - 2, third_height - 2), 0, GCornerNone);
+		}
+		if (neat_bar->down_pressed) {
+			graphics_fill_rect(ctx, GRect(1, third_height * 2 + 1, bounds.size.w - 2, bounds.size.h - third_height * 2 - 2), 0, GCornerNone);
+		}
+	}
 }
 
 static void s_base_click_config_provider(void *config_context) {
@@ -301,6 +326,15 @@ void neat_bar_layer_set_background_color(NeatBarLayer *neat_bar, GColor backgrou
 	layer_mark_dirty(neat_bar->main_layer);
 }
 
+// default: NULL (null disables legacy animations)
+void neat_bar_layer_set_animations_type(NeatBarLayer *neat_bar, GColor8 *pressed_color) {
+	if (pressed_color->argb == neat_bar->animations_legacy_pressed_color->argb) {
+		return;
+	}
+	neat_bar->animations_legacy_pressed_color = pressed_color;
+	layer_mark_dirty(neat_bar->main_layer);
+}
+
 // default: 0
 void neat_bar_layer_set_spread(NeatBarLayer *neat_bar, int8_t spread) {
 	if (spread == neat_bar->spread) {
@@ -366,9 +400,10 @@ NeatBarLayer *neat_bar_layer_create() {
 	neat_bar->corner_radius = 0;
 	neat_bar->x_offset = 0;
 	neat_bar->spread = 0;
+	neat_bar->animations_duration = 144;
 	neat_bar->animations_move_on_y_axis = false;
 	neat_bar->animations_move_distance = ANIM_DISTANCE;
-	neat_bar->animations_duration = 144;
+	neat_bar->animations_legacy_pressed_color = NULL;
 	neat_bar->up_pressed = false;
 	neat_bar->select_pressed = false;
 	neat_bar->down_pressed = false;

src/c/neat_bar.h

@@ -17,10 +17,10 @@ typedef struct {
 	uint16_t corner_radius;
 	uint16_t x_offset;
 	int8_t spread;
+	uint8_t animations_duration;
 	bool animations_move_on_y_axis;
 	int8_t animations_move_distance;
-	uint8_t animations_duration;
+	GColor8 *animations_legacy_pressed_color;
-	//bool use_legacy_animations
 	bool up_pressed;
 	bool select_pressed;
 	bool down_pressed;
@@ -34,6 +34,7 @@ void neat_bar_layer_set_click_config_provider(NeatBarLayer *neat_bar, ClickConfi
 void neat_bar_layer_set_animations_move_distance(NeatBarLayer *neat_bar, int8_t distance);
 void neat_bar_layer_set_animations_move_axis(NeatBarLayer *neat_bar, bool use_y_axis);
 void neat_bar_layer_set_animations_duration(NeatBarLayer *neat_bar, uint8_t duration_ms);
+void neat_bar_layer_set_animations_type(NeatBarLayer *neat_bar, GColor8 *pressed_color);
 void neat_bar_layer_set_floating(NeatBarLayer *neat_bar, uint16_t x_offset);
 void neat_bar_layer_set_width(NeatBarLayer *neat_bar, uint16_t width);
 void neat_bar_layer_set_height(NeatBarLayer *neat_bar, uint16_t height);