Introduce native Symbian bitmap support to QPixmap

This is done to reduce heap consumption and to give
a possibility to share bitmaps across process. QPixmap
maps to Symbian CFbsBitmap which is stored in Symbian
font and bitmap server.

Reviewed-by: Jason Barron

1 files changed, 97 insertions, 0 deletions

diff --git a/src/gui/image/qpixmap_s60_p.h b/src/gui/image/qpixmap_s60_p.h
new file mode 100644
index 0000000000..b56b27041e
--- /dev/null
+++ b/src/gui/image/qpixmap_s60_p.h
@@ -0,0 +1,97 @@
+/****************************************************************************
+**
+** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the $MODULE$ of the Qt Toolkit.
+**
+** $TROLLTECH_DUAL_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QPIXMAPDATA_S60_P_H
+#define QPIXMAPDATA_S60_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtGui/private/qpixmap_raster_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class CFbsBitmap;
+class CFbsBitmapDevice;
+class CBitmapContext;
+
+class QSymbianBitmapDataAccess;
+
+class QSymbianFbsHeapLock
+{
+public:
+    
+    enum LockAction {
+        Unlock
+    };
+    
+    explicit QSymbianFbsHeapLock(LockAction a);
+    ~QSymbianFbsHeapLock();
+    void relock();	
+    
+private:
+    
+    LockAction action;
+    bool wasLocked;
+};
+
+class QS60PixmapData : public QRasterPixmapData
+{
+public:
+    QS60PixmapData(PixelType type);
+    ~QS60PixmapData();
+
+    void resize(int width, int height);
+    void fromImage(const QImage &image, Qt::ImageConversionFlags flags);
+    void copy(const QPixmapData *data, const QRect &rect);
+    bool scroll(int dx, int dy, const QRect &rect);
+
+    int metric(QPaintDevice::PaintDeviceMetric metric) const;
+    void fill(const QColor &color);
+    void setMask(const QBitmap &mask);
+    void setAlphaChannel(const QPixmap &alphaChannel);
+    QImage toImage() const;
+    QPaintEngine* paintEngine() const;
+
+    void beginDataAccess();
+    void endDataAccess(bool readOnly=false) const;
+
+private:
+	void release();
+	void fromSymbianBitmap(CFbsBitmap* bitmap);
+	bool initSymbianBitmapContext();
+
+    QSymbianBitmapDataAccess *symbianBitmapDataAccess;
+    
+    CFbsBitmap *cfbsBitmap;
+    CFbsBitmapDevice *bitmapDevice;
+    CBitmapContext *bitmapContext;
+    QPaintEngine *pengine;
+    uchar* bytes;
+
+    friend class QPixmap;
+    friend class QS60WindowSurface;
+    friend class QS60PaintEngine;
+    friend class QS60Data;
+};
+
+QT_END_NAMESPACE
+
+#endif // QPIXMAPDATA_S60_P_H
+