wgui: MouseCancel event couldn't propagate all the way down (Closes #588)

wgui/src/components/button.rs

@@ -508,11 +508,11 @@ fn register_event_mouse_release(
 				state.sticky_down = !state.sticky_down;
 			}
 
-			common.alterables.trigger_haptics();
-			common.alterables.play_sound(WguiSoundType::ButtonRelease);
-			common.alterables.mark_redraw();
-
 			if state.down {
+				common.alterables.trigger_haptics();
+				common.alterables.play_sound(WguiSoundType::ButtonRelease);
+				common.alterables.mark_redraw();
+
 				state.down = false;
 				if state.hovered {
 					anim_hover(

wgui/src/layout.rs

@@ -471,6 +471,7 @@ impl Layout {
 				&mut self.get_event_params(l, node_id, style, alterables),
 				widget_id,
 				event,
+				event_result,
 			)?;
 
 			if res_priority.can_propagate() {

wgui/src/widget/mod.rs

@@ -561,13 +561,17 @@ impl WidgetState {
 	}
 
 	// this is called before calling children of this widget
-	pub fn process_event_priority(
+	pub fn process_event_priority<'a>(
 		&mut self,
 		params: &mut EventParams,
 		widget_id: WidgetID,
 		event: &Event,
+		event_result: &'a mut EventResult,
 	) -> anyhow::Result<EventResult> {
 		match &event {
+			Event::MouseCancel => {
+				*event_result = EventResult::Pass;
+			}
 			Event::MouseUp(_e) => {
 				if self.data.swipe_running {
 					self.data.swipe_running = false;