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, 84 insertions, 0 deletions

diff --git a/src/gui/kernel/qt_s60_p.h b/src/gui/kernel/qt_s60_p.h
index 1e9967f..3bb27c3 100644
--- a/src/gui/kernel/qt_s60_p.h
+++ b/src/gui/kernel/qt_s60_p.h
@@ -64,6 +64,7 @@
 #include "qapplication.h"
 #include "qelapsedtimer.h"
 #include "QtCore/qthreadstorage.h"
+#include "qwidget_p.h"
 #include <w32std.h>
 #include <coecntrl.h>
 #include <eikenv.h>
@@ -84,6 +85,8 @@ QT_BEGIN_NAMESPACE
 // system events seems to start with 0x10
 const TInt KInternalStatusPaneChange = 0x50000000;
 
+static const int qt_symbian_max_screens = 4;
+
 //this macro exists because EColor16MAP enum value doesn't exist in Symbian OS 9.2
 #define Q_SYMBIAN_ECOLOR16MAP TDisplayMode(13)
 
@@ -157,8 +160,14 @@ public:
 
     static inline void updateScreenSize();
     inline RWsSession& wsSession();
+    static inline int screenCount();
     static inline RWindowGroup& windowGroup();
+    static inline RWindowGroup& windowGroup(const QWidget *widget);
+    static inline RWindowGroup& windowGroup(int screenNumber);
     inline CWsScreenDevice* screenDevice();
+    inline CWsScreenDevice* screenDevice(const QWidget *widget);
+    inline CWsScreenDevice* screenDevice(int screenNumber);
+    static inline int screenNumberForWidget(const QWidget *widget);
     static inline CCoeAppUi* appUi();
     static inline CEikMenuBar* menuBar();
 #ifdef Q_WS_S60
@@ -175,6 +184,11 @@ public:
 #ifdef Q_OS_SYMBIAN
     TTrapHandler *s60InstalledTrapHandler;
 #endif
+
+    int screenWidthInPixelsForScreen[qt_symbian_max_screens];
+    int screenHeightInPixelsForScreen[qt_symbian_max_screens];
+    int screenWidthInTwipsForScreen[qt_symbian_max_screens];
+    int screenHeightInTwipsForScreen[qt_symbian_max_screens];
 };
 
 Q_AUTOTEST_EXPORT QS60Data* qGlobalS60Data();
@@ -274,6 +288,8 @@ private:
     // Fader object used to fade everything except this menu and the CBA.
     TAknPopupFader popupFader;
 #endif
+
+    bool m_inExternalScreenOverride : 1;
 };
 
 inline QS60Data::QS60Data()
@@ -325,6 +341,17 @@ inline void QS60Data::updateScreenSize()
     S60->defaultDpiY = S60->screenHeightInPixels / inches;
     inches = S60->screenWidthInTwips / (TReal)KTwipsPerInch;
     S60->defaultDpiX = S60->screenWidthInPixels / inches;
+
+    int screens = S60->screenCount();
+    for (int i = 0; i < screens; ++i) {
+        CWsScreenDevice *dev = S60->screenDevice(i);
+        mode = dev->CurrentScreenMode();
+        dev->GetScreenModeSizeAndRotation(mode, params);
+        S60->screenWidthInPixelsForScreen[i] = params.iPixelSize.iWidth;
+        S60->screenHeightInPixelsForScreen[i] = params.iPixelSize.iHeight;
+        S60->screenWidthInTwipsForScreen[i] = params.iTwipsSize.iWidth;
+        S60->screenHeightInTwipsForScreen[i] = params.iTwipsSize.iHeight;
+    }
 }
 
 inline RWsSession& QS60Data::wsSession()
@@ -335,11 +362,38 @@ inline RWsSession& QS60Data::wsSession()
     return tls.localData()->wsSession;
 }
 
+inline int QS60Data::screenCount()
+{
+#if defined(Q_SYMBIAN_SUPPORTS_MULTIPLE_SCREENS)
+    CCoeEnv *env = CCoeEnv::Static();
+    if (env) {
+        return qMin(env->WsSession().NumberOfScreens(), qt_symbian_max_screens);
+    }
+#endif
+    return 1;
+}
+
 inline RWindowGroup& QS60Data::windowGroup()
 {
     return CCoeEnv::Static()->RootWin();
 }
 
+inline RWindowGroup& QS60Data::windowGroup(const QWidget *widget)
+{
+    return windowGroup(screenNumberForWidget(widget));
+}
+
+inline RWindowGroup& QS60Data::windowGroup(int screenNumber)
+{
+#if defined(Q_SYMBIAN_SUPPORTS_MULTIPLE_SCREENS)
+    RWindowGroup *wg = CCoeEnv::Static()->RootWin(screenNumber);
+    return wg ? *wg : windowGroup();
+#else
+    Q_UNUSED(screenNumber);
+    return windowGroup();
+#endif
+}
+
 inline CWsScreenDevice* QS60Data::screenDevice()
 {
     if(!tls.hasLocalData()) {
@@ -348,6 +402,36 @@ inline CWsScreenDevice* QS60Data::screenDevice()
     return tls.localData()->screenDevice;
 }
 
+inline CWsScreenDevice* QS60Data::screenDevice(const QWidget *widget)
+{
+    return screenDevice(screenNumberForWidget(widget));
+}
+
+inline CWsScreenDevice* QS60Data::screenDevice(int screenNumber)
+{
+#if defined(Q_SYMBIAN_SUPPORTS_MULTIPLE_SCREENS)
+    CCoeEnv *env = CCoeEnv::Static();
+    if (env) {
+        CWsScreenDevice *dev = env->ScreenDevice(screenNumber);
+        return dev ? dev : screenDevice();
+    } else {
+        return screenDevice();
+    }
+#else
+    return screenDevice();
+#endif
+}
+
+inline int QS60Data::screenNumberForWidget(const QWidget *widget)
+{
+    if (!widget)
+        return 0;
+    const QWidget *w = widget;
+    while (w->parentWidget())
+        w = w->parentWidget();
+    return qt_widget_private(const_cast<QWidget *>(w))->symbianScreenNumber;
+}
+
 inline CCoeAppUi* QS60Data::appUi()
 {
     return CCoeEnv::Static()-> AppUi();