init implementation of MacOS window btn location

examples/mainwindow/TitleBar.ui

@@ -126,7 +126,7 @@
      </property>
      <property name="font">
       <font>
-       <family>Segoe UI</family>
+       <family>Arial</family>
        <pointsize>9</pointsize>
       </font>
      </property>
@@ -283,6 +283,8 @@
  <layoutdefault spacing="6" margin="11"/>
  <resources>
   <include location="../images.qrc"/>
+  <include location="../images.qrc"/>
+  <include location="../images.qrc"/>
  </resources>
  <connections/>
 </ui>

examples/mainwindow/mainwindow.cpp

@@ -107,6 +107,7 @@ void MainWindow::showEvent(QShowEvent *event)
             titleBarWidget->maximizeButton->hide();
             titleBarWidget->closeButton->hide();
             Utilities::showMacWindowButton(windowHandle());
+            Utilities::setStandardWindowButtonsOffset(win, QPoint(0, -5));
 #endif // Q_OS_MAC
             inited = true;
         }

examples/minimal/flwindow.cpp

@@ -37,6 +37,7 @@ void FLWindow::initFramelessWindow()
     m_maximizeButton->hide();
     m_closeButton->hide();
     Utilities::showMacWindowButton(windowHandle());
+    Utilities::setStandardWindowButtonsOffset(windowHandle(), QPoint(10, 10));
 #endif
 }
 
@@ -64,6 +65,18 @@ bool FLWindow::nativeEvent(const QByteArray &eventType, void *message, long *res
 }
 #endif // Q_OS_WIN
 
+#ifdef Q_OS_MAC
+void FLWindow::resizeEvent(QResizeEvent *event)
+{
+    auto win = windowHandle();
+    if (win) {
+        Utilities::setStandardWindowButtonsOffset(win, QPoint(10, 10));
+    }
+
+    QWidget::resizeEvent(event);
+}
+#endif // Q_OS_MAC
+
 void FLWindow::setupUi()
 {
     resize(800, 600);

examples/minimal/flwindow.h

@@ -18,6 +18,10 @@ protected:
 	bool nativeEvent(const QByteArray &eventType, void *message, long *result) override;
 #endif // Q_OS_WIN
 
+#ifdef Q_OS_MAC
+    void resizeEvent(QResizeEvent *event) override;
+#endif // Q_OS_MAC
+
 private:
 	void initFramelessWindow();
 	void setupUi();

src/core/framelesshelper.cpp

@@ -496,7 +496,6 @@ bool FramelessHelper::eventFilter(QObject *object, QEvent *event)
             resizeWindow(re->size());
             break;
         }
-
         case QEvent::NonClientAreaMouseMove:
         case QEvent::MouseMove:
         {

src/core/utilities.h

@@ -76,6 +76,11 @@ FRAMELESSHELPER_API bool unsetMacWindowFrameless(QWindow* w);
 FRAMELESSHELPER_API bool startMacDrag(QWindow* w, const QPoint& pos);
 FRAMELESSHELPER_API Qt::MouseButtons getMacMouseButtons();
 FRAMELESSHELPER_API bool showMacWindowButton(QWindow *w);
+FRAMELESSHELPER_API bool isMacKeyWindow(QWindow *w);
+FRAMELESSHELPER_API bool isMacMainWindow(QWindow *w);
+FRAMELESSHELPER_API bool makeMacKeyWindow(QWindow *w);
+FRAMELESSHELPER_API bool makeMacMainWindow(QWindow *w);
+FRAMELESSHELPER_API bool setStandardWindowButtonsOffset(QWindow *w, const QPoint &offset);
 #endif // Q_OS_MAC
 
 }

src/core/utilities_macos.mm

@@ -30,6 +30,7 @@
 
 #include <QtGui/qguiapplication.h>
 #include <QtCore/qlist.h>
+#include <QtCore/qdebug.h>
 
 FRAMELESSHELPER_BEGIN_NAMESPACE
 
@@ -191,6 +192,19 @@ static void __sendEvent(id obj, SEL sel, NSEvent* event)
         QGuiApplication::processEvents();
 }
 
+typedef BOOL (*isFlippedType)(id, SEL);
+static isFlippedType gOrigIsFlipped = nullptr;
+static BOOL __isFlipped(id obj, SEL sel)
+{
+    if (!gFlsWindows.contains(reinterpret_cast<NSWindow *>(obj)))
+        return true;
+
+    if (gOrigIsFlipped != nullptr)
+        return gOrigIsFlipped(obj, sel);
+
+    return false;
+}
+
 /*!
     Replace origin method \a origSEL of class \a cls with new one \a newIMP ,
     then return old method as function pointer.
@@ -227,6 +241,8 @@ static void overrideNSWindowMethods(NSWindow* window)
                     cls, @selector(canBecomeMainWindow), (IMP) __canBecomeMainWindow);
         gOrigSendEvent = (sendEventType) replaceMethod(
                     cls, @selector(sendEvent:), (IMP) __sendEvent);
+        gOrigIsFlipped = (isFlippedType) replaceMethod(
+                    cls, @selector (isFlipped), (IMP) __isFlipped);
 
         gNSWindowOverrode = true;
     }
@@ -255,6 +271,9 @@ static void restoreNSWindowMethods(NSWindow* window)
         restoreMethod(cls, @selector(sendEvent:), (IMP) gOrigSendEvent);
         gOrigSendEvent = nullptr;
 
+        restoreMethod(cls, @selector(isFlipped), (IMP) gOrigIsFlipped);
+        gOrigIsFlipped = nullptr;
+
         gNSWindowOverrode = false;
     }
 
@@ -265,9 +284,17 @@ static QHash<QWindow*, NSWindow*> gQWindowToNSWindow;
 static NSWindow* getNSWindow(QWindow* w)
 {
     NSView* view = reinterpret_cast<NSView *>(w->winId());
-    if (view == nullptr)
+    if (view == nullptr) {
+        qWarning() << "Unable to get NSView.";
         return nullptr;
-    return [view window];
+    }
+    NSWindow* nswindow = [view window];
+    if (nswindow == nullptr) {
+        qWarning() << "Unable to get NSWindow.";
+        return nullptr;
+    }
+
+    return nswindow;
 }
 
 bool setMacWindowHook(QWindow* w)
@@ -350,10 +377,7 @@ bool unsetMacWindowFrameless(QWindow* w)
 
 bool showMacWindowButton(QWindow *w)
 {
-    NSView* view = reinterpret_cast<NSView *>(w->winId());
+    NSWindow* nswindow = getNSWindow(w);
-    if (view == nullptr)
-        return false;
-    NSWindow* nswindow = [view window];
     if (nswindow == nullptr)
         return false;
 
@@ -367,10 +391,7 @@ bool showMacWindowButton(QWindow *w)
 
 bool startMacDrag(QWindow* w, const QPoint& pos)
 {
-    NSView* view = reinterpret_cast<NSView *>(w->winId());
+    NSWindow* nswindow = getNSWindow(w);
-    if (view == nullptr)
-        return false;
-    NSWindow* nswindow = [view window];
     if (nswindow == nullptr)
         return false;
 
@@ -387,6 +408,85 @@ Qt::MouseButtons getMacMouseButtons()
     return static_cast<Qt::MouseButtons>((uint)(NSEvent.pressedMouseButtons & Qt::MouseButtonMask));
 }
 
+bool isMacKeyWindow(QWindow *w)
+{
+    NSWindow* nswindow = getNSWindow(w);
+    if (nswindow == nullptr) {
+        qWarning() << "Unable to get NSView.";
+        return false;
+    }
+
+    return [nswindow isKeyWindow];
+}
+
+bool isMacMainWindow(QWindow *w)
+{
+    NSWindow* nswindow = getNSWindow(w);
+    if (nswindow == nullptr)
+        return false;
+
+    return [nswindow isMainWindow];
+}
+
+bool makeMacKeyWindow(QWindow *w)
+{
+    NSWindow* nswindow = getNSWindow(w);
+    if (nswindow == nullptr)
+        return false;
+
+    [nswindow makeKeyWindow];
+    return true;
+}
+
+bool makeMacMainWindow(QWindow *w)
+{
+    NSWindow* nswindow = getNSWindow(w);
+    if (nswindow == nullptr)
+        return false;
+
+    [nswindow makeMainWindow];
+    return true;
+}
+
+static void setButtonLocation(NSButton * btn, const QPoint &offset, NSView *contentview)
+{
+    if (btn.superview != contentview) {
+        [btn.superview willRemoveSubview:btn];
+        [btn removeFromSuperview];
+        [btn viewWillMoveToSuperview:contentview];
+        [contentview addSubview:btn];
+        [btn viewDidMoveToSuperview];
+    }
+
+    auto frame = btn.frame;
+    btn.frame = NSMakeRect(
+        frame.origin.x + offset.x(),
+        frame.origin.y + offset.y(),
+        frame.size.width, frame.size.height);
+}
+
+/*! The origin of AppKit coordinate system is bottom-left. */
+bool setStandardWindowButtonsOffset(QWindow *w, const QPoint &offset)
+{
+    NSWindow* nswindow = getNSWindow(w);
+    if (nswindow == nullptr)
+        return false;
+
+    NSView* contentview = nswindow.contentView;
+    if (contentview == nullptr)
+        return false;
+
+    auto close = [nswindow standardWindowButton:NSWindowCloseButton];
+    auto min = [nswindow standardWindowButton:NSWindowMiniaturizeButton];
+    auto zoom = [nswindow standardWindowButton:NSWindowZoomButton];
+
+    setButtonLocation(close, offset, contentview);
+    setButtonLocation(min, offset, contentview);
+    setButtonLocation(zoom, offset, contentview);
+
+    return true;
+}
+
 } // namespace Utilities
 
 FRAMELESSHELPER_END_NAMESPACE