wgui: event results/blocking for overlapping content, rev iterate events for root node

wgui/src/components/button.rs

@@ -11,7 +11,7 @@ use crate::{
 		util::centered_matrix,
 	},
 	widget::{
-		WidgetData,
+		EventResult, WidgetData,
 		label::{WidgetLabel, WidgetLabelParams},
 		rectangle::{WidgetRectangle, WidgetRectangleParams},
 		util::WLength,
@@ -159,7 +159,7 @@ fn register_event_mouse_enter<U1, U2>(
 				true,
 			));
 			state.borrow_mut().hovered = true;
-			Ok(())
+			Ok(EventResult::Pass)
 		}),
 	);
 }
@@ -183,7 +183,7 @@ fn register_event_mouse_leave<U1, U2>(
 				false,
 			));
 			state.borrow_mut().hovered = false;
-			Ok(())
+			Ok(EventResult::Pass)
 		}),
 	);
 }
@@ -211,14 +211,15 @@ fn register_event_mouse_press<U1, U2>(
 				true,
 			);
 
-			if state.hovered {
-				state.down = true;
-			}
-
 			common.alterables.trigger_haptics();
 			common.alterables.mark_redraw();
 
-			Ok(())
+			if state.hovered {
+				state.down = true;
+				Ok(EventResult::Consumed)
+			} else {
+				Ok(EventResult::Pass)
+			}
 		}),
 	);
 }
@@ -244,6 +245,9 @@ fn register_event_mouse_release<U1, U2>(
 				false,
 			);
 
+			common.alterables.trigger_haptics();
+			common.alterables.mark_redraw();
+
 			let mut state = state.borrow_mut();
 			if state.down {
 				state.down = false;
@@ -253,12 +257,10 @@ fn register_event_mouse_release<U1, U2>(
 				{
 					on_click(common, ButtonClickEvent {})?;
 				}
+				Ok(EventResult::Consumed)
+			} else {
+				Ok(EventResult::Pass)
 			}
-
-			common.alterables.trigger_haptics();
-			common.alterables.mark_redraw();
-
-			Ok(())
 		}),
 	);
 }