Added workable QScreen API on top of QPlatformScreen.

QPlatformIntegration::screens() no longer has to be implemented,
implementations should call QPlatformIntegration::screenAdded() for each
screen instead. This is for being able to support adding screens at
run-time later on, by connecting it to a signal in QGuiApplication.

The QGuiGLContext API has changed a bit, by not sending in all the
parameters in the constructor but instead having a create() function.
The createPlatformGLContext() factory in QPlatformIntegration takes a
QGuiGLContext * instead of a QSurfaceFormat and a share context, similar
to how the window and backing store factory functions work.

The XCB plugin has experimental support for connecting to multiple X
displays simultaneously, creating one or more QScreen for each.

Change-Id: I248a22a4fd3481280710110272c04a30a8021e8f
Reviewed-on: http://codereview.qt.nokia.com/2103
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Jørgen Lind <jorgen.lind@nokia.com>

1 files changed, 28 insertions, 5 deletions

diff --git a/src/gui/kernel/qplatformscreen_qpa.h b/src/gui/kernel/qplatformscreen_qpa.h
index 16e62dd6c6..8d3dd4cc71 100644
--- a/src/gui/kernel/qplatformscreen_qpa.h
+++ b/src/gui/kernel/qplatformscreen_qpa.h
@@ -52,6 +52,7 @@
 #include <QtGui/qcursor.h>
 #include <QtGui/qimage.h>
 #include <QtGui/qwindowdefs.h>
+#include <QtGui/qplatformpixmap_qpa.h>
 
 QT_BEGIN_HEADER
 
@@ -59,24 +60,46 @@ QT_BEGIN_NAMESPACE
 
 QT_MODULE(Gui)
 
-class Q_GUI_EXPORT QPlatformScreen : public QObject
+class QPlatformBackingStore;
+class QPlatformGLContext;
+class QPlatformScreenPrivate;
+class QPlatformWindow;
+class QScreen;
+class QSurfaceFormat;
+
+class Q_GUI_EXPORT QPlatformScreen
 {
-    Q_OBJECT
+    Q_DECLARE_PRIVATE(QPlatformScreen)
+
 public:
-    virtual ~QPlatformScreen() { }
+    QPlatformScreen();
+    virtual ~QPlatformScreen();
+
+    virtual QPixmap grabWindow(WId window, int x, int y, int width, int height) const;
 
     virtual QRect geometry() const = 0;
     virtual QRect availableGeometry() const {return geometry();}
+
     virtual int depth() const = 0;
     virtual QImage::Format format() const = 0;
     virtual QSize physicalSize() const;
-    //jl: should setDirty be removed.
-    virtual void setDirty(const QRect &) {}
+
     virtual QWindow *topLevelAt(const QPoint &point) const;
+    virtual QList<QPlatformScreen *> virtualSiblings() const;
+
+    QScreen *screen() const;
 
     //jl: should this function be in QPlatformIntegration
     //jl: maybe screenForWindow is a better name?
     static QPlatformScreen *platformScreenForWindow(const QWindow *window);
+
+    virtual QString name() const { return QString(); }
+
+protected:
+    QScopedPointer<QPlatformScreenPrivate> d_ptr;
+
+private:
+    Q_DISABLE_COPY(QPlatformScreen)
 };
 
 QT_END_NAMESPACE