author | Pat Downey <patd@symbian.org> |
Wed, 01 Sep 2010 12:16:53 +0100 | |
branch | RCL_3 |
changeset 52 | 31fccae4f8a7 |
parent 3 | d8a3531bc6b8 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2006-2008 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: OpenVG 1.0 render surface. |
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* |
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*/ |
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#ifndef __HUIVG10RENDERSURFACE_H__ |
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#define __HUIVG10RENDERSURFACE_H__ |
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#include <e32base.h> |
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#include <EGL/egl.h> |
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#include "HuiRenderSurface.h" |
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#include "uiacceltk/HuiSessionObject.h" |
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/* Forward declarations. */ |
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class CHuiDisplay; |
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/** |
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* The render surface is a destination where rendered graphics will ultimately |
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* end up. This may be, e.g., the display frame buffer or a bitmap in memory. |
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*/ |
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NONSHARABLE_CLASS(CHuiVg10RenderSurface) : public CBase, public MHuiRenderSurface, |
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public MHuiSessionObject |
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{ |
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public: |
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/* Constructors and destructor. */ |
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static CHuiVg10RenderSurface* NewL(CHuiDisplay& aDisplay); |
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static CHuiVg10RenderSurface* NewLC(CHuiDisplay& aDisplay); |
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virtual ~CHuiVg10RenderSurface(); |
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/* Methods, implemets MHuiRenderSurface interface. */ |
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TUint Flags() const; |
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TBool GetScreenOrigin(TPoint& aOrigin) const; |
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TSize Size() const; |
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void SetSizeL(const TSize& aSize); |
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virtual void MakeCurrent(); |
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virtual void SwapBuffers(); |
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virtual void Finish(); |
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virtual void BindTexture(TInt aTextureUnit, |
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const MHuiSegmentedTexture& aTexture, |
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TInt aSegment); |
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/** |
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* Handles change in surface visibility. This method is called if surface is either |
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* hidden or shown. This default implementation ignores visibility events. |
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* |
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* @param aIsVisible ETrue if surface becomes visible. EFalse if surface is hidden. |
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*/ |
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virtual void HandleVisibilityEvent(TBool aIsVisible); |
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virtual void Release(); |
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virtual void RestoreL(); |
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virtual void HandleDisplayUsageChangeL(); |
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// These methods are not really used, since opengles renderer doesn't |
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// support dirty region handling or symbian graphics context! |
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virtual void SetDirtyRect(const TRect& aRect); |
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virtual MHuiTargetBitmap* BackBuffer(); |
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virtual CFbsBitGc* Gc(); |
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/** |
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* Provides expandability, helps keeping the binary compatibility. Since virtual |
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* table is now exported and this class is dll derivable and the implementation |
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* is more difficult to change, hence this method, which can provide additional |
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* extension APIs. |
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* |
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* @param aExtensionUid UID, which is being used for recognizing the extension |
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* @param aExtensionParams Return pointer to the extension API, once recognized from the extension uid |
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*/ |
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virtual void RenderSurfaceExtension(const TUid& aExtensionUid, TAny** aExtensionParams); |
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/** |
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* Static method for returning verbose error message strings according to the given |
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* EGL error value. This can be used to create meaningful error messages in |
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* HUIToolkit environments that use OpenVG rendering. |
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* |
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* @param aErrorCode EGL Error code retrieved by eglGetError - method. |
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* @return Verbose error message as a TDesC reference object. |
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*/ |
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static const TDesC& EglErrorMessage(TInt aErrorCode); |
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// Implementation of MHuiSessionObject |
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/** |
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* Gets the object type. |
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*/ |
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TType Type() const; |
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/** |
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* Gets the session id for object. |
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*/ |
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TInt SessionId() const; |
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/** |
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* Sets the session id for object. |
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*/ |
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void SetSessionId(TInt aSessionId); |
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/** |
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* @return the currently bound texture image. |
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*/ |
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const MHuiSegmentedTexture* BoundTexture() const; |
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protected: |
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/* Constructors. */ |
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CHuiVg10RenderSurface(CHuiDisplay& aDisplay); |
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void ConstructL(); |
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/** |
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* Determines the display to which this rendering surface is attached. |
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* |
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* @return Display. |
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*/ |
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CHuiDisplay& Display() const; |
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/** |
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* Determine config for the owner display. |
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*/ |
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EGLConfig DetermineConfig(); |
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/** |
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* Create an EGL rendering surface. |
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*/ |
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EGLSurface CreateSurface(EGLConfig aConfig); |
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protected: |
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/** Display that owns the surface. */ |
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CHuiDisplay* iDisplay; |
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/** The display. */ |
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EGLDisplay iEglDisplay; |
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/** The rendering context. */ |
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EGLContext iEglContext; |
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/** The window where the graphics are drawn. */ |
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EGLSurface iEglSurface; |
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/** Size of the rendering surface. */ |
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TSize iSize; |
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/** The currently bound texture */ |
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const MHuiSegmentedTexture* iBoundTexture; |
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private: |
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/** Session id */ |
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TInt iSessionId; |
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}; |
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#endif // __HUIVG10RENDERSURFACE_H__ |