author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 02 Feb 2010 07:56:43 +0200 | |
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permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2006-2007 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: Declares the MHuiTargetBitmap interface. MHuiTargetBitmap is |
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* an interface for a writable bitmap in raw format. |
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* |
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*/ |
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#ifndef __HUITARGETBITMAP_H__ |
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#define __HUITARGETBITMAP_H__ |
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#include <e32base.h> |
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/** |
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* Interface for a bitmap that can be drawn on as a raw bitmap. CHuiBitgdiGc |
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* uses this interface for accessing the target bitmap where drawing is |
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* being done. |
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*/ |
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class MHuiTargetBitmap |
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{ |
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public: |
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virtual ~MHuiTargetBitmap() {} |
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/** |
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* Determines the size of the bitmap. |
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* |
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* @return Size of the bitmap in pixels. |
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*/ |
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virtual TSize Size() const = 0; |
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/** |
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* Determines the pixel format of the bitmap. |
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* |
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* @return Format of the bitmap as a TDisplayMode. |
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* |
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* @see TDisplayMode in the platform documentation. |
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*/ |
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virtual TDisplayMode DisplayMode() const = 0; |
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/** |
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* Locks the heap so that the memory buffer of the bitmap can be |
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* accessed directly. Prevents heap compression done by other threads. |
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* The heap must be unlocked with UnlockHeap() after the buffer |
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* processing has been completed. |
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* |
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* @see CFbsBitmap::LockHeap() |
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*/ |
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virtual void LockHeap() = 0; |
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/** |
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* Unlocks the heap. Must be called after the heap has been locked |
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* and operated on. |
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*/ |
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virtual void UnlockHeap() = 0; |
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/** |
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* Provides access to the memory buffer of the bitmap. |
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* |
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* @return Pointer to the beginning of the pixel data. |
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* |
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* @see LockHeap() |
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* @see UnlockHeap() |
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*/ |
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virtual TAny* DataAddress() = 0; |
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/** |
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* Sets the clipping rectangle for the bitmap. All drawing operations |
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* (FillRect(), BitBlt(), BitBltMasked()) are confined into this |
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* rectangle when drawn. |
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* |
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* @param aRect Clipping rectangle. |
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*/ |
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virtual void SetClippingRect(const TRect& aRect) = 0; |
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/** |
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* Sets the clipping region for the bitmap. All drawing operations |
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* (FillRect(), BitBlt(), BitBltMasked()) are confined into this |
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* region when drawn. |
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* |
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* @param aRegion Region containing clipping rectangles. |
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*/ |
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virtual void SetClippingRegion(const TRegion& aRegion) = 0; |
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/** |
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* Draws a solid-colored rectangle. Affected by the clipping rectangle. |
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* |
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* @param aRect Rectangle to fill with a solid color. |
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* @param aColor RGBA color to use for filling. Note that the alpha |
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* component of the TRgb is also valid. |
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*/ |
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virtual void FillRect(const TRect& aRect, const TRgb& aColor) = 0; |
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/** |
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* Draws a bitmap. Affected by the clipping rectangle. Analogous to |
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* the corresponding CFbsBitGc::BitBlt() method. |
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* |
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* @param aPoint Position where to draw. |
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* @param aBitmap Bitmap to draw. |
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* @param aSourceRect Rectangle within the source bitmap where to draw from. |
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*/ |
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virtual void BitBlt(const TPoint& aPoint, const CFbsBitmap *aBitmap, const TRect &aSourceRect) = 0; |
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/** |
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* Draws a masked bitmap. Affected by the clipping rectangle. |
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* Analogous to the corresponding CFbsBitGc::BitBltMasked() method. |
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* |
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* @param aPoint Position where to draw. |
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* @param aBitmap Bitmap to draw. |
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* @param aSourceRect Rectangle within the source bitmap where to draw from. |
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* @param aMaskBitmap Mask bitmap. |
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* @param aInvertMask ETrue if the mask should be inverted. |
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*/ |
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virtual void BitBltMasked(const TPoint &aPoint, const CFbsBitmap *aBitmap, const TRect &aSourceRect, const CFbsBitmap *aMaskBitmap, TBool aInvertMask) = 0; |
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/** |
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* Returns pointer to the bitmap. If the class do not have CFbsBitmap this methdod returns NULL. |
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* |
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* @return Pointer to the bitmap. |
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*/ |
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virtual CFbsBitmap* FbsBitmap() = 0; |
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/** |
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* Returns the BITGDI graphics context that is used for drawing in |
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* the back buffer. |
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* |
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* Writing a real implementation for this might not be needed if the renderer |
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* does not support symbian graphics context. |
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* |
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* @return BITGDI graphics context. |
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*/ |
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virtual CFbsBitGc* Gc() = 0; |
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}; |
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#endif // __HUITARGETBITMAP_H__ |