Set Qt5Widget to be a central widget of QMainWindow

this is meant to solve the problem of native menu bar overlapping
w/ non-native, as well as the inability to place an object or select
text dragging the mouse cursor w/ LMB pressed

Change-Id: I29f590ebf79d1ecc7e17b402125384cf13774bf3
Reviewed-on: https://gerrit.libreoffice.org/58171
Tested-by: Jenkins
Reviewed-by: Thorsten Behrens <Thorsten.Behrens@CIB.de>

1 files changed, 10 insertions, 2 deletions

diff --git a/vcl/inc/qt5/Qt5Frame.hxx b/vcl/inc/qt5/Qt5Frame.hxx
index 310298879e52..04ade0b38b2d 100644
--- a/vcl/inc/qt5/Qt5Frame.hxx
+++ b/vcl/inc/qt5/Qt5Frame.hxx
@@ -31,7 +31,9 @@ class Qt5Graphics;
 class Qt5Instance;
 class Qt5Menu;
 class QWidget;
+class Qt5MainWindow;
 class QPaintDevice;
+class QScreen;
 class QImage;
 class SvpSalGraphics;
 
@@ -39,7 +41,8 @@ class VCLPLUG_QT5_PUBLIC Qt5Frame : public SalFrame
 {
     friend class VclQtMixinBase;
 
-    std::unique_ptr<QWidget> m_pQWidget;
+    QWidget* m_pQWidget;
+    Qt5MainWindow* m_pTopLevel;
 
     const bool m_bUseCairo;
     std::unique_ptr<QImage> m_pQImage;
@@ -76,6 +79,10 @@ class VCLPLUG_QT5_PUBLIC Qt5Frame : public SalFrame
         return bool(m_nStyle & nMask);
     }
 
+    bool isWindow();
+    QWindow* windowHandle();
+    QScreen* screen();
+
     void TriggerPaintEvent();
     void TriggerPaintEvent(QRect aRect);
 
@@ -83,7 +90,8 @@ public:
     Qt5Frame(Qt5Frame* pParent, SalFrameStyleFlags nSalFrameStyle, bool bUseCairo);
     virtual ~Qt5Frame() override;
 
-    QWidget* GetQWidget() const { return m_pQWidget.get(); }
+    QWidget* GetQWidget() const { return m_pQWidget; }
+    Qt5MainWindow* GetTopLevelWindow() const { return m_pTopLevel; }
 
     void Damage(sal_Int32 nExtentsX, sal_Int32 nExtentsY, sal_Int32 nExtentsWidth,
                 sal_Int32 nExtentsHeight) const;