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, 29 insertions, 9 deletions

diff --git a/src/gui/kernel/qapplication_s60.cpp b/src/gui/kernel/qapplication_s60.cpp
index 02560b3..86d4fcf 100644
--- a/src/gui/kernel/qapplication_s60.cpp
+++ b/src/gui/kernel/qapplication_s60.cpp
@@ -405,6 +405,7 @@ QSymbianControl::QSymbianControl(QWidget *w)
     , m_longTapDetector(0)
     , m_ignoreFocusChanged(0)
     , m_symbianPopupIsOpen(0)
+    , m_inExternalScreenOverride(false)
 {
 }
 
@@ -412,9 +413,11 @@ void QSymbianControl::ConstructL(bool isWindowOwning, bool desktop)
 {
     if (!desktop)
     {
-        if (isWindowOwning || !qwidget->parentWidget())
-            CreateWindowL(S60->windowGroup());
-        else
+        if (isWindowOwning || !qwidget->parentWidget()
+            || qwidget->parentWidget()->windowType() == Qt::Desktop) {
+            RWindowGroup &wg(S60->windowGroup(qwidget));
+            CreateWindowL(wg);
+        } else {
             /**
              * TODO: in order to avoid creating windows for all ancestors of
              * this widget up to the root window, the parameter passed to
@@ -424,6 +427,7 @@ void QSymbianControl::ConstructL(bool isWindowOwning, bool desktop)
              * is created for a widget between this one and the root window.
              */
             CreateWindowL(qwidget->parentWidget()->winId());
+        }
 
         // Necessary in order to be able to track the activation status of
         // the control's window
@@ -456,7 +460,7 @@ void QSymbianControl::ConstructL(bool isWindowOwning, bool desktop)
             windowPurpose = ETfxPurposeSplashScreenWindow;
             break;
         default:
-            windowPurpose = (isWindowOwning || !qwidget->parentWidget())
+            windowPurpose = (isWindowOwning || !qwidget->parentWidget() || qwidget->parentWidget()->windowType() == Qt::Desktop)
                             ? ETfxPurposeWindow : ETfxPurposeChildWindow;
             break;
         }
@@ -987,14 +991,15 @@ TKeyResponse QSymbianControl::handleVirtualMouse(const TKeyEvent& keyEvent,TEven
                 }
             }
             //clip to screen size (window server allows a sprite hotspot to be outside the screen)
+            int screenNumber = S60->screenNumberForWidget(qwidget);
             if (x < 0)
                 x = 0;
-            else if (x >= S60->screenWidthInPixels)
-                x = S60->screenWidthInPixels - 1;
+            else if (x >= S60->screenWidthInPixelsForScreen[screenNumber])
+                x = S60->screenWidthInPixelsForScreen[screenNumber] - 1;
             if (y < 0)
                 y = 0;
-            else if (y >= S60->screenHeightInPixels)
-                y = S60->screenHeightInPixels - 1;
+            else if (y >= S60->screenHeightInPixelsForScreen[screenNumber])
+                y = S60->screenHeightInPixelsForScreen[screenNumber] - 1;
             TPoint epos(x, y);
             TPoint cpos = epos - PositionRelativeToScreen();
             fakeEvent.iPosition = cpos;
@@ -1171,6 +1176,18 @@ void QSymbianControl::SizeChanged()
     QSize newSize(Size().iWidth, Size().iHeight);
 
     if (oldSize != newSize) {
+        const bool isFullscreen = qwidget->windowState() & Qt::WindowFullScreen;
+        const int screenNumber = S60->screenNumberForWidget(qwidget);
+        if (!m_inExternalScreenOverride && isFullscreen && screenNumber > 0) {
+            int screenWidth = S60->screenWidthInPixelsForScreen[screenNumber];
+            int screenHeight = S60->screenHeightInPixelsForScreen[screenNumber];
+            TSize screenSize(screenWidth, screenHeight);
+            if (screenWidth > 0 && screenHeight > 0 && screenSize != Size()) {
+                m_inExternalScreenOverride = true;
+                SetExtent(TPoint(0, 0), screenSize);
+                return;
+            }
+        }
         QRect cr = qwidget->geometry();
         cr.setSize(newSize);
         qwidget->data->crect = cr;
@@ -1193,6 +1210,8 @@ void QSymbianControl::SizeChanged()
         }
     }
 
+    m_inExternalScreenOverride = false;
+
     // CCoeControl::SetExtent calls SizeChanged, but does not call
     // PositionChanged, so we call it here to ensure that the widget's
     // position is updated.
@@ -2035,7 +2054,8 @@ int QApplicationPrivate::symbianProcessWsEvent(const QSymbianEvent *symbianEvent
             return 1;
         }
         break;
-    case EEventScreenDeviceChanged:
+    case EEventScreenDeviceChanged: // fallthrough
+    case EEventDisplayChanged:
         if (callSymbianEventFilters(symbianEvent))
             return 1;
         if (S60)