author | William Roberts <williamr@symbian.org> |
Fri, 12 Nov 2010 11:42:24 +0000 | |
branch | RCL_3 |
changeset 66 | 8ee165fddeb6 |
parent 0 | 15bf7259bb7c |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 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: |
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* |
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*/ |
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|
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|
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#include "HuiFxVg10RenderbufferBase.h" |
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VGImage CHuiFxVg10RenderbufferBase::AcquireSubImage(const TRect& aRect) |
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{ |
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TSize size = Size(); |
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TRect parentImageRect(Position(),Size()); |
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// Clip sub image rect to always be inside the buffer (to avoid error in vgChildImage) |
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TRect clippedRect(aRect); |
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clippedRect.Intersection(parentImageRect); |
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|
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if (clippedRect.iTl.iX == 0 && clippedRect.iTl.iY == 0 && clippedRect.Size() == size) |
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{ |
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return Image(); // buffer is exactly the size of the rectangle and correctly positioned --- no need for childimage. |
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} |
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else |
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{ |
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TInt x; |
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TInt y; |
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if(BufferType() == EBufferTypeOffscreen) |
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{ |
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x = 0; |
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y = 0; |
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} |
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else |
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{ |
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x = clippedRect.iTl.iX; |
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y = size.iHeight - clippedRect.iBr.iY; // Note: vertically flipped coordinate system. |
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// aRect is in Hitchcock coordinates (top-left 0,0) |
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// but y is in VG coordinates (bottom-left 0,0). |
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} |
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VGImage ret = vgChildImage(Image(), x, y, clippedRect.Size().iWidth, clippedRect.Size().iHeight); |
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|
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HUIFX_VG_INVARIANT(); |
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return ret; |
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} |
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} |
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void CHuiFxVg10RenderbufferBase::ReleaseSubImage(VGImage aImage) |
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{ |
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if (aImage != Image()) |
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{ |
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vgDestroyImage(aImage); |
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HUIFX_VG_INVARIANT(); |
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} |
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} |