110     /** Flag to indicate whether surface is invisible (based on visibility calculation) */

   110     /** Flag to indicate whether surface is invisible (based on visibility calculation) */

   111     EHuiCanvasFlagSurfaceInvisible = 0x400,

   111     EHuiCanvasFlagSurfaceInvisible = 0x400,

   112     /** Flag to indicate whether surface is visible (based on visibility calculation) */

   112     /** Flag to indicate whether surface is visible (based on visibility calculation) */

   113     EHuiCanvasFlagSurfaceVisible = 0x800,

   113     EHuiCanvasFlagSurfaceVisible = 0x800,

   114     /** Flag to indicate avkon clearer window. This needs to be drawn, but excluded in the heuristics determining application screen coverage */

   114     /** Flag to indicate avkon clearer window. This needs to be drawn, but excluded in the heuristics determining application screen coverage */

   118     };

   116     };

   119 

   117 

   120 /**

   118 /**

   121  * This class is used internally by the toolkit and thus should

   119  * This class is used internally by the toolkit and thus should

   122  * not be used by the applications directly.

   120  * not be used by the applications directly.

   454     TBool CollectPaintedRegion(TRegion& aRecursivePaintRegion, TInt aExcludeCanvasFlags) const;

   452     TBool CollectPaintedRegion(TRegion& aRecursivePaintRegion, TInt aExcludeCanvasFlags) const;

   455     TBool CollectRecursivePaintedRegion(TRegion& aRecursivePaintRegion, TInt aExcludeCanvasFlags) const;

   453     TBool CollectRecursivePaintedRegion(TRegion& aRecursivePaintRegion, TInt aExcludeCanvasFlags) const;

   456     

   454     

   457     TBool CanSkipDrawing() const;

   455     TBool CanSkipDrawing() const;

   458     TBool KeepNoCache() const;

   456     TBool KeepNoCache() const;

   460 

   457 

   461 private: 

   458 private: 

   462 

   459 

   463     struct THuiCanvasVisualData;

   460     struct THuiCanvasVisualData;

   464     THuiCanvasVisualData* iCanvasVisualData;

   461     THuiCanvasVisualData* iCanvasVisualData;