Merge pull request #12635 from ctrlaltdavid/21776

Fix Window hasFocus(), setFocus(), and raiseMainWindow()

interface/src/Application.cpp

@@ -7347,10 +7347,35 @@ bool Application::isThrottleRendering() const {
 }
 
 bool Application::hasFocus() const {
-    if (_displayPlugin) {
-        return getActiveDisplayPlugin()->hasFocus();
+    bool result = (QApplication::activeWindow() != nullptr);
+#if defined(Q_OS_WIN)
+    // On Windows, QWidget::activateWindow() - as called in setFocus() - makes the application's taskbar icon flash but doesn't 
+    // take user focus away from their current window. So also check whether the application is the user's current foreground 
+    // window.
+    result = result && (HWND)QApplication::activeWindow()->winId() == GetForegroundWindow();
+#endif
+    return result;
+}
+
+void Application::setFocus() {
+    // Note: Windows doesn't allow a user focus to be taken away from another application. Instead, it changes the color of and 
+    // flashes the taskbar icon.
+    auto window = qApp->getWindow();
+    window->activateWindow();
+}
+
+void Application::raise() {
+    auto windowState = qApp->getWindow()->windowState();
+    if (windowState & Qt::WindowMinimized) {
+        if (windowState & Qt::WindowMaximized) {
+            qApp->getWindow()->showMaximized();
+        } else if (windowState & Qt::WindowFullScreen) {
+            qApp->getWindow()->showFullScreen();
+        } else {
+            qApp->getWindow()->showNormal();
+        }
     }
-    return (QApplication::activeWindow() != nullptr);
+    qApp->getWindow()->raise();
 }
 
 void Application::setMaxOctreePacketsPerSecond(int maxOctreePPS) {

interface/src/Application.h

@@ -161,6 +161,8 @@ public:
     QRect getRecommendedHUDRect() const;
     glm::vec2 getDeviceSize() const;
     bool hasFocus() const;
+    void setFocus();
+    void raise();
 
     void showCursor(const Cursor::Icon& cursor);
 

interface/src/scripting/WindowScriptingInterface.cpp

@@ -74,16 +74,14 @@ QScriptValue WindowScriptingInterface::hasFocus() {
 void WindowScriptingInterface::setFocus() {
     // It's forbidden to call focus() from another thread.
     qApp->postLambdaEvent([] {
-        auto window = qApp->getWindow();
-        window->activateWindow();
-        window->setFocus();
+        qApp->setFocus();
     });
 }
 
 void WindowScriptingInterface::raiseMainWindow() {
     // It's forbidden to call raise() from another thread.
     qApp->postLambdaEvent([] {
-        qApp->getWindow()->raise();
+        qApp->raise();
     });
 }
 

interface/src/scripting/WindowScriptingInterface.h

@@ -62,13 +62,14 @@ public slots:
     QScriptValue hasFocus();
 
     /**jsdoc
-     * Make the Interface window have focus.
+     * Make the Interface window have focus. On Windows, if Interface doesn't already have focus, the task bar icon flashes to 
+     * indicate that Interface wants attention but focus isn't taken away from the application that the user is using.
      * @function Window.setFocus
      */
     void setFocus();
 
     /**jsdoc
-     * Raise the Interface window if it is minimized, and give it focus.
+     * Raise the Interface window if it is minimized. If raised, the window gains focus.
      * @function Window.raiseMainWindow
      */
     void raiseMainWindow();

libraries/display-plugins/src/display-plugins/NullDisplayPlugin.cpp

@@ -21,10 +21,6 @@ glm::uvec2 NullDisplayPlugin::getRecommendedRenderSize() const {
     return glm::uvec2(100, 100);
 }
 
-bool NullDisplayPlugin::hasFocus() const {
-    return false;
-}
-
 void NullDisplayPlugin::submitFrame(const gpu::FramePointer& frame) {
     if (frame) {
         _gpuContext->consumeFrameUpdates(frame);

libraries/display-plugins/src/display-plugins/NullDisplayPlugin.h

@@ -16,7 +16,6 @@ public:
     grouping getGrouping() const override { return DEVELOPER; }
 
     glm::uvec2 getRecommendedRenderSize() const override;
-    bool hasFocus() const override;
     void submitFrame(const gpu::FramePointer& newFrame) override;
     QImage getScreenshot(float aspectRatio = 0.0f) const override;
     QImage getSecondaryCameraScreenshot() const override;

libraries/display-plugins/src/display-plugins/OpenGLDisplayPlugin.cpp

@@ -831,11 +831,6 @@ glm::uvec2 OpenGLDisplayPlugin::getSurfaceSize() const {
     return result;
 }
 
-bool OpenGLDisplayPlugin::hasFocus() const {
-    auto window = _container->getPrimaryWidget();
-    return window ? window->hasFocus() : false;
-}
-
 void OpenGLDisplayPlugin::assertNotPresentThread() const {
     Q_ASSERT(QThread::currentThread() != _presentThread);
 }

libraries/display-plugins/src/display-plugins/OpenGLDisplayPlugin.h

@@ -98,8 +98,6 @@ protected:
     virtual void compositePointer();
     virtual void compositeExtra() {};
 
-    virtual bool hasFocus() const override;
-
     // These functions must only be called on the presentation thread
     virtual void customizeContext();
     virtual void uncustomizeContext();

libraries/plugins/src/plugins/DisplayPlugin.h

@@ -140,9 +140,6 @@ public:
     virtual void setContext(const gpu::ContextPointer& context) final { _gpuContext = context; }
     virtual void submitFrame(const gpu::FramePointer& newFrame) = 0;
 
-    // Does the rendering surface have current focus?
-    virtual bool hasFocus() const = 0;
-
     // The size of the rendering target (may be larger than the device size due to distortion)
     virtual glm::uvec2 getRecommendedRenderSize() const = 0;