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nsDrawingSurfaceQt.h
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00002 /* ***** BEGIN LICENSE BLOCK *****
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00015  * The Original Code is mozilla.org code.
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00017  * The Initial Developer of the Original Code is
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00022  * Contributor(s):
00023  *   Lars Knoll <knoll@kde.org>
00024  *   Zack Rusin <zack@kde.org>
00025  *   John C. Griggs <johng@corel.com>
00026  *
00027  * Alternatively, the contents of this file may be used under the terms of
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00040 
00041 #ifndef nsDrawingSurfaceQt_h___
00042 #define nsDrawingSurfaceQt_h___
00043 
00044 #include "nsIDrawingSurface.h"
00045 
00046 #include <qpainter.h>
00047 #include <qimage.h>
00048 
00049 class QPixmap;
00050 
00051 class nsDrawingSurfaceQt : public nsIDrawingSurface
00052 {
00053 public:
00054     nsDrawingSurfaceQt();
00055     virtual ~nsDrawingSurfaceQt();
00056 
00057     NS_DECL_ISUPPORTS
00058 
00059     //nsIDrawingSurface interface
00060     NS_IMETHOD Lock(PRInt32 aX,PRInt32 aY,
00061                     PRUint32 aWidth,PRUint32 aHeight,
00062                     void **aBits,PRInt32 *aStride,
00063                     PRInt32 *aWidthBytes,PRUint32 aFlags);
00064     NS_IMETHOD Unlock(void);
00065     NS_IMETHOD GetDimensions(PRUint32 *aWidth, PRUint32 *aHeight);
00066     NS_IMETHOD IsOffscreen(PRBool *aOffScreen);
00067     NS_IMETHOD IsPixelAddressable(PRBool *aAddressable);
00068     NS_IMETHOD GetPixelFormat(nsPixelFormat *aFormat);
00069 
00078     NS_IMETHOD Init(QPaintDevice * aPaintDevice, QPainter *aGC);
00079 
00093     NS_IMETHOD Init(QPainter *aGC,PRUint32 aWidth,PRUint32 aHeight,
00094                     PRUint32 aFlags);
00095 
00096     // utility functions.
00097     PRInt32 GetDepth() { return mDepth; }
00098     // These two are only virtual so that they can be called from outside of
00099     // this DSO
00100     virtual QPainter *GetGC(void);
00101     virtual QPaintDevice  *GetPaintDevice(void);
00102 
00103 protected:
00104     NS_IMETHOD CommonInit();
00105 
00106 private:
00107     /* general */
00108     QPaintDevice  *mPaintDevice;
00109     QPixmap       mPixmap;
00110     QPainter      *mGC;
00111     int           mDepth;
00112     nsPixelFormat mPixFormat;
00113     PRUint32      mWidth;
00114     PRUint32      mHeight;
00115     PRUint32      mFlags;
00116     PRBool        mIsOffscreen;
00117 
00118     /* for locks */
00119     QImage        mImage;
00120     PRInt32       mLockX;
00121     PRInt32       mLockY;
00122     PRUint32      mLockWidth;
00123     PRUint32      mLockHeight;
00124     PRUint32      mLockFlags;
00125     PRBool        mLocked;
00126 };
00127 
00128 #endif