Cocoa: Add setAlertState(), isAlertState(), beep() functions

Also, fix operator precedence error in QApplication::alert().

Change-Id: I140ccfba29638d24bc1c97f5f9a9611f66eb6b8f
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Morten Johan Sørvig <morten.sorvig@digia.com>

src/plugins/platforms/cocoa/qcocoanativeinterface.h

@@ -65,6 +65,8 @@ public:
 
     NativeResourceForIntegrationFunction nativeResourceFunctionForIntegration(const QByteArray &resource) Q_DECL_OVERRIDE;
 
+    Q_INVOKABLE void beep();
+
     static void *cglContextForContext(QOpenGLContext *context);
     static void *nsOpenGLContextForContext(QOpenGLContext* context);
 

src/plugins/platforms/cocoa/qcocoanativeinterface.mm

@@ -124,6 +124,11 @@ QPlatformNativeInterface::NativeResourceForIntegrationFunction QCocoaNativeInter
     return 0;
 }
 
+void QCocoaNativeInterface::beep()
+{
+    NSBeep();
+}
+
 QPlatformPrinterSupport *QCocoaNativeInterface::createPlatformPrinterSupport()
 {
 #ifndef QT_NO_WIDGETS

src/plugins/platforms/cocoa/qcocoawindow.h

@@ -106,6 +106,8 @@ public:
     void setWindowTitle(const QString &title);
     void setWindowFilePath(const QString &filePath);
     void setWindowIcon(const QIcon &icon);
+    void setAlertState(bool enabled);
+    bool isAlertState() const;
     void raise();
     void lower();
     bool isExposed() const;
@@ -190,6 +192,9 @@ public: // for QNSView
     bool m_frameStrutEventsEnabled;
     bool m_isExposed;
     int m_registerTouchCount;
+
+    static const int NoAlertRequest;
+    NSInteger m_alertRequest;
 };
 
 QT_END_NAMESPACE

src/plugins/platforms/cocoa/qcocoawindow.mm

@@ -188,6 +188,8 @@ static bool isMouseEvent(NSEvent *ev)
 
 @end
 
+const int QCocoaWindow::NoAlertRequest = -1;
+
 QCocoaWindow::QCocoaWindow(QWindow *tlw)
     : QPlatformWindow(tlw)
     , m_nsWindow(0)
@@ -202,6 +204,7 @@ QCocoaWindow::QCocoaWindow(QWindow *tlw)
     , m_frameStrutEventsEnabled(false)
     , m_isExposed(false)
     , m_registerTouchCount(0)
+    , m_alertRequest(NoAlertRequest)
 {
 #ifdef QT_COCOA_ENABLE_WINDOW_DEBUG
     qDebug() << "QCocoaWindow::QCocoaWindow" << this;
@@ -496,6 +499,21 @@ void QCocoaWindow::setWindowIcon(const QIcon &icon)
     }
 }
 
+void QCocoaWindow::setAlertState(bool enabled)
+{
+    if (m_alertRequest == NoAlertRequest && enabled) {
+        m_alertRequest = [NSApp requestUserAttention:NSCriticalRequest];
+    } else if (m_alertRequest != NoAlertRequest && !enabled) {
+        [NSApp cancelUserAttentionRequest:m_alertRequest];
+        m_alertRequest = NoAlertRequest;
+    }
+}
+
+bool QCocoaWindow::isAlertState() const
+{
+    return m_alertRequest != NoAlertRequest;
+}
+
 void QCocoaWindow::raise()
 {
     //qDebug() << "raise" << this;

src/widgets/kernel/qapplication_qpa.cpp

@@ -415,7 +415,7 @@ void QApplication::beep()
 void QApplication::alert(QWidget *widget, int duration)
 {
     if (widget) {
-       if (widget->window()->isActiveWindow()&& !widget->window()->windowState() & Qt::WindowMinimized)
+       if (widget->window()->isActiveWindow() && !(widget->window()->windowState() & Qt::WindowMinimized))
             return;
         if (QWindow *window= QApplicationPrivate::windowForWidget(widget))
             window->alert(duration);