Send a MouseExit event when the mouse leaves the window

Fixes #989

CHANGELOG.md

@@ -6,6 +6,11 @@ All notable changes to this project will be documented in this file.
 ### Added
 
  - C++ interpreter API: added a `Value::Value(int)` constructor
+ - Globals Singleton may now refer to other global singletons
+
+### Fixed
+
+ - `TouchArea::has-hover` is now properly set to false when the mouse leaves the window.
 
 ## [0.2.0] - 2022-02-10
 

internal/backends/gl/event_loop.rs

@@ -459,8 +459,7 @@ fn process_window_event(
         }
         WindowEvent::CursorLeft { .. } => {
             // On the html canvas, we don't get the mouse move or release event when outside the canvas. So we have no choice but canceling the event
-            #[cfg(target_arch = "wasm32")]
-            if *pressed {
+            if cfg!(target_arch = "wasm32") || !*pressed {
                 corelib::animations::update_animations();
                 *pressed = false;
                 runtime_window.process_mouse_input(MouseEvent::MouseExit);

internal/backends/qt/qt_window.rs

@@ -138,6 +138,11 @@ cpp! {{
                 rust_window.mouse_event(MouseEvent::MouseWheel{pos, delta})
             });
         }
+        void leaveEvent(QEvent *) override {
+            rust!(Slint_mouseLeaveEvent [rust_window: &QtWindow as "void*"] {
+                rust_window.mouse_event(MouseEvent::MouseExit)
+            });
+        }
 
         void keyPressEvent(QKeyEvent *event) override {
             uint modifiers = uint(event->modifiers());