author | hgs |
Tue, 25 May 2010 17:55:19 +0300 | |
changeset 29 | ac3859d43844 |
parent 21 | 6ce30188c5bf |
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: Definition of CHuiCanvasVisual. |
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* |
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*/ |
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#ifndef __HUICANVASVISUAL_H__ |
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#define __HUICANVASVISUAL_H__ |
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#include <gdi.h> |
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#include <bitdraw.h> |
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#include <e32base.h> |
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#include <uiacceltk/HuiOwnedPointer.h> |
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#include <uiacceltk/HuiLayout.h> |
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#include <uiacceltk/HuiDisplay.h> |
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/* Forward declarations. */ |
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class CHuiControl; |
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class THuiCanvasDrawImageParams; |
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class THuiCanvasTextParameters; |
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class CHuiCanvasGc; |
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class MHuiCanvasPainter; |
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/** Public initial values for ws painter */ |
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#define KHuiWsDefaultUserClipRect TRect(0,0,0,0) |
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#define KHuiWsDefaultLastPrintPosition TPoint(0,0) |
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#define KHuiWsDefaultPenColor KRgbBlack |
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#define KHuiWsDefaultPenStyle CGraphicsContext::ESolidPen |
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#define KHuiWsDefaultPenSize TSize(1,1) |
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#define KHuiWsDefaultDrawMode CGraphicsContext::EDrawModePEN |
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#define KHuiWsDefaultLinePosition TPoint(0,0) |
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#define KHuiWsDefaultOrigin TPoint(0,0) |
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#define KHuiWsDefaultBrushUsed EFalse |
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#define KHuiWsDefaultBrushColor KRgbWhite |
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#define KHuiWsDefaultBrushOrigin TPoint(0,0) |
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#define KHuiWsDefaultBrushStyle CGraphicsContext::ENullBrush |
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#define KHuiWsDefaultCharJustExcess 0 |
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#define KHuiWsDefaultCharJustNum 0 |
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#define KHuiWsDefaultWordJustExcess 0 |
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#define KHuiWsDefaultWordJustNum 0 |
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#define KHuiWsDefaultDitherOrigin TPoint(0,0) |
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#define KHuiWsDefaultDotLength 0 |
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#define KHuiWsDefaultDotMask 0 |
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#define KHuiWsDefaultDotParam 0 |
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#define KHuiWsDefaultDotDirection 1 |
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#define KHuiWsDefaultShadowMode CFbsDrawDevice::ENoShadow |
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#define KHuiWsDefaultStrikethrough EStrikethroughOff |
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#define KHuiWsDefaultUnderline EUnderlineOff |
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#define KHuiWsDefaultUserDisplayMode ENone |
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#define KHuiWsDefaultShadowColor KRgbGray |
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#define KHuiWsDefaultFadeColor 0x80FFFFFF |
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enum THuiCanvasPaintType |
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{ |
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/** Transparent or semitransparent */ |
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EHuiCanvasPaintTypeTransparent, |
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/** Fully opaque */ |
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EHuiCanvasPaintTypeOpaque |
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}; |
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NONSHARABLE_STRUCT (THuiCanvasPaintedArea) |
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{ |
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/** Painted area in the canvas */ |
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THuiRealRect iPaintedRect; |
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/** Paint type of the area */ |
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TInt iPaintType; |
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/** Reserved for future */ |
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TInt iFlags; |
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}; |
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enum THuiCanvasFlags |
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{ |
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/** Disables canvas from drawing the canvas content */ |
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EHuiCanvasFlagDisableCanvasContent = 0x1, |
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/** Disables canvas from drawing the canvas background (if set) */ |
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EHuiCanvasFlagDisableCanvasBackground = 0x2, |
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/** Canvas is drawn with external fade effect */ |
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EHuiCanvasFlagExternalFade = 0x4, |
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/** Canvas drawing is clipped to own and parent canvas intersection */ |
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EHuiCanvasFlagEnableCanvasClipping = 0x8, |
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/** External fade effect (if enabled) is extended to children */ |
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EHuiCanvasFlagExternalFadeToChildren = 0x10, |
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/** External fade effect (if enabled) is set to a parent (or grandparent) */ |
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EHuiCanvasFlagExternalFadeByParent = 0x40, |
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/** Effect is excluded from parent (or grandparent) effect (if it has effect which is applied to children) */ |
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EHuiCanvasFlagExcludeFromParentEffect = 0x80, |
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/** Hint flag which is used for optimizations. Tells if fade effect(s) exist in visual tree */ |
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EHuiCanvasFlagExternalFadeExistsInsideVisualTree = 0x100, |
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/** Flag to indicate whether to include this visual to visibility calculation */ |
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EHuiCanvasFlagIncludeToVisibilityCalculation = 0x200, |
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/** Flag to indicate whether surface is invisible (based on visibility calculation) */ |
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EHuiCanvasFlagSurfaceInvisible = 0x400, |
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/** Flag to indicate whether surface is visible (based on visibility calculation) */ |
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EHuiCanvasFlagSurfaceVisible = 0x800, |
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/** Flag to indicate avkon clearer window. This needs to be drawn, but excluded in the heuristics determining application screen coverage */ |
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EHuiCanvasFlagDistractionWindow = 0x1000 |
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}; |
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|
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/** |
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* This class is used internally by the toolkit and thus should |
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* not be used by the applications directly. |
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*/ |
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class CHuiCanvasVisual : public CHuiLayout |
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{ |
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public: |
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|
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enum |
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{ |
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/** @deprecated */ |
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ECommandBufferHui, |
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/** @deprecated */ |
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ECommandBufferSgc |
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}; |
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|
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enum |
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{ |
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ECommandBufferAlf, |
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ECommandBufferWs |
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}; |
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|
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/* Constructors and destructor. */ |
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|
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/** |
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* Constructs and appends a new Canvas visual to the owner control. |
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* |
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* @param aOwnerControl Control that will own the new visual. |
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* |
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* @param aCanvasType The enumerator describing the type of concrete Canvas |
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* to be created. |
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* |
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* @return The new visual. |
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*/ |
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IMPORT_C static CHuiCanvasVisual* AddNewL(CHuiControl& aOwnerControl, |
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CHuiLayout* aParentLayout = 0); |
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|
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/** |
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* Constructor. |
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*/ |
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CHuiCanvasVisual(MHuiVisualOwner& aOwner); |
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|
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/** |
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* Second-phase constructor. |
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*/ |
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void ConstructL(); |
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|
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/** |
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* Destructor. |
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*/ |
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~CHuiCanvasVisual(); |
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|
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/** |
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* Sets buffer that contains canvas drawing commands. This |
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* method clears previous buffer(s). |
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* |
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* @param aCommands Commanbuffer |
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*/ |
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IMPORT_C void SetCommandSetL( const TDesC8& aCommands ); |
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|
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/** |
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* Sets the type of commands in the buffer. |
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* |
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* @param aCommandType Type of the command buffer, either |
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* ECommandBufferHui or ECommandBufferSgc. In the future |
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* more command set types may be supported. |
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* |
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*/ |
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IMPORT_C void SetCommandType( TInt aCommandType ); |
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|
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/** |
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* Clears buffer(s) that contains canvas drawing commands. |
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*/ |
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IMPORT_C void ClearCommandSet(); |
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|
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IMPORT_C void SetTrackCommandSet( TFileName& aFileName, TBool aTrack ); |
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|
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/** |
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* Adds buffer that contains more canvas drawing commands, |
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* those will be executed after the buffers that has been |
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* added previously. |
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* @param aMoreCommands Commanbuffer |
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*/ |
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IMPORT_C void AddCommandSetL( const TDesC8& aMoreCommands ); |
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|
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/** |
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* Adds partial buffer that contains more canvas drawing commands. These |
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* commands are appended to the commands set previously with this method |
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* until param aLastPart has value ETrue. After that whole command set |
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* will be added among possibly already existing command sets and |
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* it will be drawable. |
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* |
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* @param aMoreCommands Commanbuffer |
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* @param aLastPart EFalse if there are more commands to be added into this |
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* command set before it is wanted to be available for drawing. ETrue if |
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* command set is ready and no more parts are expected. |
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*/ |
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IMPORT_C void AddPartialCommandSetL( const TDesC8& aMoreCommands, TBool aLastPart ); |
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/** |
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* Clears internal cached texts and images. |
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*/ |
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IMPORT_C void ClearCache(); |
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/** |
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* Prepares internal cached texts and images. |
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*/ |
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IMPORT_C void PrepareCache(); |
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/** |
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* Sets the flag that tells the canvas to clear the background before |
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* doing a refresh. |
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* |
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* Note1: EClearWithSkinBackground is not (yet) supported. |
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* Note2: EClearWithColor does not do alphablending, it just clears the area |
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* and writes alpha values to the rendering surface. |
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* |
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* @param aClearBackground Background clearing mode. |
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* @see SetBackgroundColor() |
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*/ |
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IMPORT_C void SetClearBackground(CHuiDisplay::TClearMode aClearBackground); |
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/** |
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* Sets the background color, if background clearing has |
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* been enabled. |
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* |
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* @param aBackgroundColor The color to set the background to. |
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* @see SetClearBackgroundL() |
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*/ |
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IMPORT_C void SetBackgroundColor(const TRgb& aBackgroundColor); |
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/** |
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* Sets the items that specify how to clear display before display refresh. |
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* Items may have overlapping rectangles, drawing order is same as item order |
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* in the parameter array. But having lots of overlapping drawing |
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* causes negative performance impact. |
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* |
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* This method is alternative to SetClearBackgroundL and SetBackgroundColor |
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* methods. |
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* |
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* @see SetBackgroundColor() |
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* @see SetClearBackgroundL() |
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* @param aItems Array of items that specify how to clear the background. |
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*/ |
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IMPORT_C void SetBackgroundItems(const RArray<THuiDisplayBackgroundItem>& aItems); |
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/** |
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* Returns the number of rectangular areas which contain something that is |
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* drawn by the visual. |
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* |
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* @return number of painted areas. |
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* @see PaintedArea() |
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*/ |
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IMPORT_C TInt PaintedAreaCount() const; |
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/** |
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* Returns information of the painted area at given index. |
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* |
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* @param aIndex Index of the painted area. |
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* @return Painted area info. |
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* @see PaintedAreaCount()() |
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*/ |
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IMPORT_C THuiCanvasPaintedArea PaintedArea(TInt aIndex); |
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|
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/** |
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* Draws content of the window in pixel format to the given bitmap. |
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* This method may not be supported in all commanbuffertype/renderer combinations. |
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* |
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* @param aTargetBuffer where content of the window is to be drawn. NULL if the drawing |
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* is to be stopped. |
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* |
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* @return KErrNotSupported if the current renderer/painter does not support the |
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* feature. Leave happens in other unexpected error situtations. |
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* |
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*/ |
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IMPORT_C TInt SetCapturingBufferL(CFbsBitmap* aTargetBuffer); |
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/** |
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* Sets canvas flags |
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* @param aCanvasFlags flags to be set |
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* |
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*/ |
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IMPORT_C void SetCanvasFlags(TInt aCanvasFlags); |
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/** |
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* Clears canvas flags |
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* @param aCanvasFlags flags to be cleared. |
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* |
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*/ |
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IMPORT_C void ClearCanvasFlags(TInt aCanvasFlags); |
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/** |
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* Gets canvas flags |
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* @return flags |
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* |
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*/ |
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IMPORT_C TInt CanvasFlags(); |
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/** |
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* Set external content visual to be drawn to the canvas visual. |
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* Giving a NULL pointer as a parameter removes the external content. |
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* @param aVisual the visual that is used as external content |
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* |
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*/ |
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IMPORT_C void SetExternalContentL(CHuiVisual* aVisual); |
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/** |
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* Return external content visual of the canvas visual. |
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* NULL return value means there is no external content. |
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* @return NULL or the visual that is used as external content |
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*/ |
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IMPORT_C CHuiVisual* ExternalContent(); |
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/** |
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* Set parent canvas visual. Parent is used for determining clipping |
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* region incase canvasflag EHuiCanvasFlagEnableCanvasClipping is set. |
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* |
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* @param aParent Canvas visual which is used to determine effective |
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* clipregion. |
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*/ |
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IMPORT_C void SetParentCanvas(CHuiCanvasVisual* aParent); |
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/** |
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* Gets reference to canvas gc |
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*/ |
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CHuiCanvasGc& CanvasGc() const; |
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IMPORT_C TBool IsBackgroundDrawingEnabled() const; |
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const TRegion& ClipRegion() const; |
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void AddChildCanvas(CHuiCanvasVisual* aChild); |
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void RemoveChildCanvas(CHuiCanvasVisual* aChild); |
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IMPORT_C TBool HasCommandBuffers(TBool aAskFromChildren = ETrue) const; |
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14
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IMPORT_C TBool HasTransParentClear() const; |
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0
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// to handle background surface that may be set to the Window |
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public: |
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IMPORT_C TBool LayerUsesAlphaFlag(); |
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IMPORT_C void SetLayerUsesAlphaFlag(TBool aEnabled); |
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IMPORT_C TRect& LayerExtent(); |
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IMPORT_C void SetLayerExtent(TRect& aExtent); |
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// window area |
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public: |
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/** |
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* Sets shape. This affects only visible area calculation. |
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*/ |
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IMPORT_C void SetShape(const TPoint& aOrigin, const TRegion& aRegion); |
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/** |
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* Returns true if shape is different than display rect. |
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*/ |
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IMPORT_C TBool HasCustomShape() const; |
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/** |
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* Returns origin of window shape. |
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*/ |
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IMPORT_C TPoint ShapeOrigin() const; |
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/** |
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* Returns shape as region. |
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*/ |
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IMPORT_C const TRegion& ShapeRegion() const; |
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public: |
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void SetSize(const THuiRealSize& aSize, TInt aTransitionTime=0); |
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TBool ChildSize(TInt aOrdinal, TSize& aSize); |
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TBool ChildPos(TInt aOrdinal, TPoint& aPos); |
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TInt ChildRect(TInt aOrdinal, THuiRealRect& aRect); |
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private: |
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void HandleBuffer(TRect& aDisplayRect, TInt aAction, CHuiGc* aGc) const; |
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void SetCommandTypeL(TInt aCommandType); |
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TBool IsContentDrawingLayered() const; |
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TBool IsContentDrawingEnabled() const; |
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TBool IsExternalContentDrawingEnabled(TBool aIncludeChildren = EFalse) const; |
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TBool IsCanvasClippingEnabled() const; |
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TBool EffectActive() const; |
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public: // From CHuiVisual |
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TBool PrepareDrawL(); |
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void Draw(CHuiGc& aGc) const; |
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/** |
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* Draw the visual. |
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*/ |
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void DrawSelf(CHuiGc& aGc, const TRect& aDisplayRect) const; |
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TBool Changed() const; |
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IMPORT_C void SetChanged(); |
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IMPORT_C void ClearChanged(); |
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void ExpandRectWithContent(TRect& aRect) const; |
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THuiRealPoint ConvertPoint(const THuiRealPoint& aPointInUnits) const; |
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void ExpandRect(TRect& aRectToExpand, const TRect& aNewRect) const; |
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public: |
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IMPORT_C void StoreRenderBufferL(); |
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void DrawStoredVisualRenderBuffer(TInt aCanvasDrawMode) const; |
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void DrawStoredFullScreenRenderBuffer(TInt aCanvasDrawMode, CHuiGc& aGc) const; |
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IMPORT_C void FreeRenderBuffer(); |
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IMPORT_C TRect CommandBufferCoverage(TInt aOrientation); |
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protected: |
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virtual void VisualExtension(const TUid& aExtensionUid, TAny** aExtensionParams); |
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THuiCanvasPaintedArea CanvasPaintedArea(TInt aIndex) const; |
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void DrawChildren(CHuiGc& aGc) const; |
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void DrawCanvasChildren(CHuiGc& aGc, TInt aIncludeCanvasFlags, TInt aExcludeCanvasFlags) const; |
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TBool ChildTreeChanged(TInt aExcludeCanvasFlags) const; |
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static TBool RecursiveChildTreeChanged(CHuiVisual* aVisual, TInt aExcludeCanvasFlags); |
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static TBool RecursiveIsExternalContentDrawingEnabled(CHuiVisual* aVisual); |
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static TBool RecursiveHasCommandBuffers(CHuiVisual* aVisual); |
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TBool CollectPaintedRegion(TRegion& aRecursivePaintRegion, TInt aExcludeCanvasFlags) const; |
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TBool CollectRecursivePaintedRegion(TRegion& aRecursivePaintRegion, TInt aExcludeCanvasFlags) const; |
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TBool CanSkipDrawing() const; |
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TBool KeepNoCache() const; |
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struct THuiCanvasVisualData; |
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THuiCanvasVisualData* iCanvasVisualData; |
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}; |
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#endif // __HUICANVASVISUAL_H__ |