QT5 implement some mouse handling

Scrollwheel handling seems to work with mouse, but not correct
when using a touchpad - at least for me.

Change-Id: I4f1b32205516912e31f9c52605ba2bf4ec6059a8

vcl/qt5/Qt5Frame.cxx

@@ -30,6 +30,8 @@
 #include <QtGui/QIcon>
 #include <QtGui/QWindow>
 #include <QtGui/QScreen>
+#include <QtGui/QWindow>
+#include <QtWidgets/QApplication>
 
 #include <saldatabasic.hxx>
 #include <vcl/layout.hxx>
@@ -490,7 +492,12 @@ const SystemEnvData* Qt5Frame::GetSystemData() const
 
 SalFrame::SalPointerState Qt5Frame::GetPointerState()
 {
-    return SalPointerState();
+    SalPointerState aState;
+    QPoint pos = QCursor::pos();
+    aState.maPos = Point( pos.x(), pos.y() );
+    aState.mnState = GetMouseModCode( qApp->mouseButtons() ) |
+                     GetKeyModCode( qApp->keyboardModifiers() );
+    return aState;
 }
 
 KeyIndicatorState Qt5Frame::GetIndicatorState()

vcl/qt5/Qt5Tools.cxx

@@ -21,8 +21,37 @@
 
 #include <cairo.h>
 
+#include <vcl/event.hxx>
+
 void CairoDeleter::operator()(cairo_surface_t *pSurface) const
 {
     cairo_surface_destroy( pSurface );
 }
 
+sal_uInt16 GetKeyModCode( Qt::KeyboardModifiers eKeyModifiers )
+{
+    sal_uInt16 nCode = 0;
+    if( eKeyModifiers & Qt::ShiftModifier )
+        nCode |= KEY_SHIFT;
+    if( eKeyModifiers & Qt::ControlModifier )
+        nCode |= KEY_MOD1;
+    if( eKeyModifiers & Qt::AltModifier )
+        nCode |= KEY_MOD2;
+    if( eKeyModifiers & Qt::MetaModifier )
+        nCode |= KEY_MOD3;
+    return nCode;
+}
+
+sal_uInt16 GetMouseModCode( Qt::MouseButtons eButtons )
+{
+    sal_uInt16 nCode = 0;
+    if( eButtons & Qt::LeftButton )
+        nCode |= MOUSE_LEFT;
+    if( eButtons & Qt::MidButton )
+        nCode |= MOUSE_MIDDLE;
+    if( eButtons & Qt::RightButton )
+        nCode |= MOUSE_RIGHT;
+    return nCode;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */

vcl/qt5/Qt5Tools.hxx

@@ -99,4 +99,7 @@ struct CairoDeleter
 
 typedef std::unique_ptr<cairo_surface_t, CairoDeleter> UniqueCairoSurface;
 
+sal_uInt16 GetKeyModCode( Qt::KeyboardModifiers eKeyModifiers );
+sal_uInt16 GetMouseModCode( Qt::MouseButtons eButtons );
+
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

vcl/qt5/Qt5Widget.cxx

@@ -25,8 +25,10 @@
 #include "Qt5Tools.hxx"
 
 #include <QtGui/QImage>
+#include <QtGui/QMouseEvent>
 #include <QtGui/QPainter>
 #include <QtGui/QPaintEvent>
+#include <QtGui/QWheelEvent>
 
 #include <cairo.h>
 #include <headless/svpgdi.hxx>
@@ -36,6 +38,7 @@ Qt5Widget::Qt5Widget( Qt5Frame &rFrame, QWidget *parent, Qt::WindowFlags f )
     , m_pFrame( &rFrame )
 {
     create();
+    setMouseTracking( true );
 }
 
 Qt5Widget::~Qt5Widget()
@@ -82,4 +85,88 @@ void Qt5Widget::resizeEvent( QResizeEvent* )
     m_pFrame->CallCallback( SalEvent::Resize, nullptr );
 }
 
+void Qt5Widget::mouseButtonEvent( QMouseEvent *pEvent, bool bReleased )
+{
+    SalMouseEvent aEvent;
+    switch( pEvent->button() )
+    {
+    case Qt::LeftButton: aEvent.mnButton = MOUSE_LEFT; break;
+    case Qt::MidButton: aEvent.mnButton = MOUSE_MIDDLE; break;
+    case Qt::RightButton: aEvent.mnButton = MOUSE_RIGHT; break;
+    default: return;
+    }
+
+    aEvent.mnTime   = pEvent->timestamp();
+    aEvent.mnX      = (long) pEvent->pos().x();
+    aEvent.mnY      = (long) pEvent->pos().y();
+    aEvent.mnCode   = GetKeyModCode( pEvent->modifiers() ) |
+                      GetMouseModCode( pEvent->buttons() );
+
+    SalEvent nEventType;
+    if ( bReleased )
+        nEventType = SalEvent::MouseButtonUp;
+    else
+        nEventType = SalEvent::MouseButtonDown;
+    m_pFrame->CallCallback( nEventType, &aEvent );
+}
+
+void Qt5Widget::mousePressEvent( QMouseEvent *pEvent )
+{
+    mouseButtonEvent( pEvent, false );
+}
+
+void Qt5Widget::mouseReleaseEvent( QMouseEvent *pEvent )
+{
+    mouseButtonEvent( pEvent, true );
+}
+
+void Qt5Widget::mouseMoveEvent( QMouseEvent *pEvent )
+{
+    SalMouseEvent aEvent;
+    aEvent.mnTime = pEvent->timestamp();
+    aEvent.mnX    = pEvent->pos().x();
+    aEvent.mnY    = pEvent->pos().y();
+    aEvent.mnCode = GetKeyModCode( pEvent->modifiers() ) |
+                    GetMouseModCode( pEvent->buttons() );
+    aEvent.mnButton = 0;
+
+    m_pFrame->CallCallback( SalEvent::MouseMove, &aEvent );
+    pEvent->accept();
+}
+
+void Qt5Widget::wheelEvent( QWheelEvent *pEvent )
+{
+    SalWheelMouseEvent aEvent;
+
+    aEvent.mnTime = pEvent->timestamp();
+    aEvent.mnX    = pEvent->pos().x();
+    aEvent.mnY    = pEvent->pos().y();
+    aEvent.mnCode = GetKeyModCode( pEvent->modifiers() ) |
+                    GetMouseModCode( pEvent->buttons() );
+
+    int nDelta = pEvent->angleDelta().x();
+    aEvent.mbHorz = true;
+    if ( !nDelta )
+    {
+        nDelta = pEvent->angleDelta().y();
+        aEvent.mbHorz = false;
+    }
+    if ( !nDelta )
+        return;
+    nDelta /= 8;
+
+    aEvent.mnDelta = nDelta;
+    aEvent.mnNotchDelta = nDelta > 0 ? 1 : -1;
+    aEvent.mnScrollLines = 3;
+
+    m_pFrame->CallCallback( SalEvent::WheelMouse, &aEvent );
+    pEvent->accept();
+}
+
+void Qt5Widget::moveEvent( QMoveEvent* )
+{
+    m_pFrame->CallCallback( SalEvent::Move, nullptr );
+}
+
+
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

vcl/qt5/Qt5Widget.hxx

@@ -23,8 +23,11 @@
 
 class Qt5Frame;
 class Qt5Object;
+class QMouseEvent;
+class QMoveEvent;
 class QPaintEvent;
 class QResizeEvent;
+class QWheelEvent;
 
 class Qt5Widget
     : public QWidget
@@ -33,8 +36,15 @@ class Qt5Widget
 
     Qt5Frame  *m_pFrame;
 
+    void mouseButtonEvent( QMouseEvent*, bool );
+
     void paintEvent( QPaintEvent* ) override;
     void resizeEvent( QResizeEvent* ) override;
+    void moveEvent( QMoveEvent* ) override;
+    void mouseMoveEvent( QMouseEvent*) override;
+    void mousePressEvent( QMouseEvent*) override;
+    void mouseReleaseEvent( QMouseEvent*) override;
+    void wheelEvent( QWheelEvent* ) override;
 
 public:
     Qt5Widget( Qt5Frame &rFrame,