Merge pull request #1081 from linebender/gtk-kb-fix

Fix gtk key repeat logic

Author: raphlinus

CHANGELOG.md

@@ -31,6 +31,7 @@ You can find its changes [documented below](#060---2020-06-01).
 - GTK: Don't crash when receiving an external command while a file dialog is visible. ([#1043] by [@jneem])
 - Fix derive `Data` when type param bounds are defined ([#1058] by [@chris-zen])
 - Ensure that `update` is called after all commands. ([#1062] by [@jneem])
+- GTK: Don't interrupt `KeyEvent.repeat` when releasing another key. ([#1081] by [@raphlinus])
 
 ### Visual
 
@@ -351,6 +352,7 @@ Last release without a changelog :(
 [#1054]: https://github.com/linebender/druid/pull/1054
 [#1058]: https://github.com/linebender/druid/pull/1058
 [#1062]: https://github.com/linebender/druid/pull/1062
+[#1081]: https://github.com/linebender/druid/pull/1081
 
 [Unreleased]: https://github.com/linebender/druid/compare/v0.6.0...master
 [0.6.0]: https://github.com/linebender/druid/compare/v0.5.0...v0.6.0

druid-shell/src/platform/gtk/window.rs

@@ -119,7 +119,7 @@ pub(crate) struct WindowState {
     drawing_area: DrawingArea,
     pub(crate) handler: RefCell<Box<dyn WinHandler>>,
     idle_queue: Arc<Mutex<Vec<IdleKind>>>,
-    current_keyval: RefCell<Option<u32>>,
+    current_keycode: RefCell<Option<u16>>,
 }
 
 impl WindowBuilder {
@@ -201,7 +201,7 @@ impl WindowBuilder {
             drawing_area,
             handler: RefCell::new(handler),
             idle_queue: Arc::new(Mutex::new(vec![])),
-            current_keyval: RefCell::new(None),
+            current_keycode: RefCell::new(None),
         });
 
         self.app
@@ -475,10 +475,11 @@ impl WindowBuilder {
         win_state.drawing_area.connect_key_press_event(clone!(handle => move |_widget, key| {
             if let Some(state) = handle.state.upgrade() {
 
-                let mut current_keyval = state.current_keyval.borrow_mut();
-                let repeat = *current_keyval == Some(key.get_keyval());
+                let mut current_keycode = state.current_keycode.borrow_mut();
+                let hw_keycode = key.get_hardware_keycode();
+                let repeat = *current_keycode == Some(hw_keycode);
 
-                *current_keyval = Some(key.get_keyval());
+                *current_keycode = Some(hw_keycode);
 
                 if let Ok(mut handler) = state.handler.try_borrow_mut() {
                     handler.key_down(make_key_event(key, repeat, KeyState::Down));
@@ -493,7 +494,10 @@ impl WindowBuilder {
         win_state.drawing_area.connect_key_release_event(clone!(handle => move |_widget, key| {
             if let Some(state) = handle.state.upgrade() {
 
-                *(state.current_keyval.borrow_mut()) = None;
+                let mut current_keycode = state.current_keycode.borrow_mut();
+                if *current_keycode == Some(key.get_hardware_keycode()) {
+                    *current_keycode = None;
+                }
 
                 if let Ok(mut handler) = state.handler.try_borrow_mut() {
                     handler.key_up(make_key_event(key, false, KeyState::Up));
@@ -839,6 +843,10 @@ const MODIFIER_MAP: &[(gdk::ModifierType, Modifiers)] = &[
     (ModifierType::MOD1_MASK, Modifiers::ALT),
     (ModifierType::CONTROL_MASK, Modifiers::CONTROL),
     (ModifierType::META_MASK, Modifiers::META),
+    (ModifierType::LOCK_MASK, Modifiers::CAPS_LOCK),
+    // Note: this is the usual value on X11, not sure how consistent it is.
+    // Possibly we should use `Keymap::get_num_lock_state()` instead.
+    (ModifierType::MOD2_MASK, Modifiers::NUM_LOCK),
 ];
 
 fn get_modifiers(modifiers: gdk::ModifierType) -> Modifiers {