Multiple screen support for Symbian in QDeskopWidget.

When using TV-out, the TV display can be used as an independent screen.
By default the content shown there is a clone of the device screen,
however from now on parenting a widget to QDesktopWidget::screen(1)
and calling show() will turn off cloning and have the widget shown
instead. screenCount() and the screenCountChanged signal can be used
to detect the availability of the secondary display, just like on other
platforms.

Task-number: QT-830

Reviewed-by: Sami Merila
Reviewed-by: Jani Hautakangas

1 files changed, 27 insertions, 5 deletions

diff --git a/src/gui/kernel/qwidget_s60.cpp b/src/gui/kernel/qwidget_s60.cpp
index af9ae47..be212fb 100644
--- a/src/gui/kernel/qwidget_s60.cpp
+++ b/src/gui/kernel/qwidget_s60.cpp
@@ -84,6 +84,8 @@ QWidget *QWidgetPrivate::mouseGrabber = 0;
 QWidget *QWidgetPrivate::keyboardGrabber = 0;
 CEikButtonGroupContainer *QS60Data::cba = 0;
 
+int qt_symbian_create_desktop_on_screen = -1;
+
 static bool isEqual(const QList<QAction*>& a, const QList<QAction*>& b)
 {
     if ( a.count() != b.count())
@@ -349,12 +351,18 @@ void QWidgetPrivate::create_sys(WId window, bool /* initializeWindow */, bool de
     int sh = clientRect.Height();
 
     if (desktop) {
-        TSize screenSize = S60->screenDevice()->SizeInPixels();
+        symbianScreenNumber = qMax(qt_symbian_create_desktop_on_screen, 0);
+        TSize screenSize = S60->screenDevice(symbianScreenNumber)->SizeInPixels();
         data.crect.setRect(0, 0, screenSize.iWidth, screenSize.iHeight);
         q->setAttribute(Qt::WA_DontShowOnScreen);
     } else if (topLevel && !q->testAttribute(Qt::WA_Resized)){
         int width = sw;
         int height = sh;
+        if (symbianScreenNumber > 0) {
+            TSize screenSize = S60->screenDevice(symbianScreenNumber)->SizeInPixels();
+            width = screenSize.iWidth;
+            height = screenSize.iHeight;
+        }
         if (extra) {
             width = qMax(qMin(width, extra->maxw), extra->minw);
             height = qMax(qMin(height, extra->maxh), extra->minh);
@@ -640,7 +648,7 @@ void QWidgetPrivate::raise_sys()
 
         // If toplevel widget, raise app to foreground
         if (q->isWindow())
-            S60->wsSession().SetWindowGroupOrdinalPosition(S60->windowGroup().Identifier(), 0);
+            S60->wsSession().SetWindowGroupOrdinalPosition(S60->windowGroup(q).Identifier(), 0);
     }
 }
 
@@ -652,7 +660,7 @@ void QWidgetPrivate::lower_sys()
     if (q->internalWinId()) {
         // If toplevel widget, lower app to background
         if (q->isWindow())
-            S60->wsSession().SetWindowGroupOrdinalPosition(S60->windowGroup().Identifier(), -1);
+            S60->wsSession().SetWindowGroupOrdinalPosition(S60->windowGroup(q).Identifier(), -1);
         else
             q->internalWinId()->DrawableWindow()->SetOrdinalPosition(-1);
     }
@@ -722,6 +730,11 @@ void QWidgetPrivate::setParent_sys(QWidget *parent, Qt::WindowFlags f)
 {
     Q_Q(QWidget);
 
+    if (parent && parent->windowType() == Qt::Desktop) {
+        symbianScreenNumber = qt_widget_private(parent)->symbianScreenNumber;
+        parent = 0;
+    }
+
     bool wasCreated = q->testAttribute(Qt::WA_WState_Created);
 
     if (q->isVisible() && q->parentWidget() && parent != q->parentWidget())
@@ -1037,7 +1050,7 @@ int QWidget::metric(PaintDeviceMetric m) const
     } else if (m == PdmHeight) {
         val = data->crect.height();
     } else {
-        CWsScreenDevice *scr = S60->screenDevice();
+        CWsScreenDevice *scr = S60->screenDevice(this);
         switch(m) {
         case PdmDpiX:
         case PdmPhysicalDpiX:
@@ -1207,7 +1220,16 @@ void QWidget::setWindowState(Qt::WindowStates newstate)
         const bool cbaVisibilityHint = windowFlags() & Qt::WindowSoftkeysVisibleHint;
         if (newstate & Qt::WindowFullScreen && !cbaVisibilityHint) {
             setAttribute(Qt::WA_OutsideWSRange, false);
-            window->SetExtentToWholeScreen();
+            if (d->symbianScreenNumber > 0) {
+                int w = S60->screenWidthInPixelsForScreen[d->symbianScreenNumber];
+                int h = S60->screenHeightInPixelsForScreen[d->symbianScreenNumber];
+                if (w <= 0 || h <= 0)
+                    window->SetExtentToWholeScreen();
+                else
+                    window->SetExtent(TPoint(0, 0), TSize(w, h));
+            } else {
+                window->SetExtentToWholeScreen();
+            }
         } else if (newstate & Qt::WindowMaximized || ((newstate & Qt::WindowFullScreen) && cbaVisibilityHint)) {
             setAttribute(Qt::WA_OutsideWSRange, false);
             TRect maxExtent = qt_QRect2TRect(qApp->desktop()->availableGeometry(this));