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) 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: |
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* |
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*/ |
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#ifndef __HUICANVASBACKGROUND_H__ |
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#define __HUICANVASBACKGROUND_H__ |
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#include <e32base.h> |
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#include <uiacceltk/HuiDisplay.h> |
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class CHuiCanvasGc; |
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class CHuiCanvasVisual; |
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class CHuiCanvasBackground : public CBase |
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{ |
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public: |
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/** |
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* Constructor. |
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*/ |
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CHuiCanvasBackground(); |
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/** |
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* Destructor. |
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*/ |
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~CHuiCanvasBackground(); |
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/** |
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* Constructor. |
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*/ |
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static CHuiCanvasBackground* NewL(); |
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/** |
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* Constructor. |
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*/ |
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static CHuiCanvasBackground* NewLC(); |
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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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* Sets visual which is using this background. |
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*/ |
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void SetVisual(CHuiCanvasVisual* aVisual); |
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/** |
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* Drawing. |
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*/ |
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void DrawSelf(CHuiGc& aGc, const TRect& aDisplayRect); |
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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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* @param aClearBackground Background clearing mode. |
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* @see SetBackgroundColor() |
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*/ |
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void SetClearBackground(CHuiDisplay::TClearMode aClearBackground); |
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/** |
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* Gets 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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* @return Background clearing mode. |
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*/ |
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TInt ClearBackground(); |
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/** |
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* Sets the background color of the display, 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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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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void SetBackgroundItems(const RArray<THuiDisplayBackgroundItem>& aItems); |
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/** |
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* Gets the number of THuiDisplayBackground items set, for the canvas visual |
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* |
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* @return Number of background items |
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*/ |
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TInt BackgroundItemsCount(); |
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/** |
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* Gets the items that specify how to clear display before display refresh. |
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* @param aItems Returned items are written into the array. |
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*/ |
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void GetBackgroundItems(RArray<THuiDisplayBackgroundItem>& aItems); |
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/** |
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* Gets the background color of the display, if background clearing has |
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* been enabled. |
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* |
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* @return The color to set the background to. |
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*/ |
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TRgb BackgroundColor() const; |
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private: |
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void ClearWithColor(CHuiGc& aGc, const TRect& aDisplayRect); |
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void ClearWithSkinBackground(const TRect& aDisplayRect); |
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void ClearWithBackgroundItems(const TRect& aDisplayRect); |
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private: |
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/** Canavas visual which uses this background */ |
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CHuiCanvasVisual* iCanvasVisual; |
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/** Determines if the background should be cleared before drawing. */ |
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TInt iClearBackground; |
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/** Background color for the display, if clearing enabled. */ |
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TRgb iBackgroundColor; |
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/** Array of background items */ |
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RArray<THuiDisplayBackgroundItem> iBackgroundItems; |
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}; |
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#endif |
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