author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Wed, 15 Sep 2010 12:00:00 +0300 | |
branch | RCL_3 |
changeset 93 | b01126ce0bec |
parent 88 | 3321d3e205b6 |
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: Fast swap area utilities classes |
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* |
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*/ |
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|
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#ifndef TSFASTSWAPAREAUTILS_H_ |
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#define TSFASTSWAPAREAUTILS_H_ |
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#include <e32base.h> |
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// Forwar class declarations |
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class CEikonEnv; |
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class TAknLayoutRect; |
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class CTsFastSwapTimer; |
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class CTsFastSwapArea; |
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class CTsFastSwapGrid; |
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class CTsFswEntry; |
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class CBitmapScaler; |
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class CTsFastSwapAreaExtension; |
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/** |
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* Interface for observing timer class. |
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*/ |
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class MTsFastSwapTimerObserver |
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{ |
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public: |
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/** |
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* Called when timer is completed |
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*/ |
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virtual void TimerCompletedL( CTsFastSwapTimer* aSource ) = 0; |
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}; |
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/** |
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* Timer class for handling timed events |
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*/ |
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class CTsFastSwapTimer : public CTimer |
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{ |
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public: |
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// Constructor |
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CTsFastSwapTimer( MTsFastSwapTimerObserver& aObserver ); |
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// Destructor |
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~CTsFastSwapTimer(); |
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// 2nd phase constructor |
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void ConstructL(); |
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private: // From CTimer |
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void RunL(); |
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private: // Data |
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MTsFastSwapTimerObserver* iObserver; // not own |
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}; |
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/** |
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* Asynchronous class for handling screenshots loading |
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* and rescaling to achieve better quality. |
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*/ |
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class CTsBitmapScaleTask : public CActive |
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{ |
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public: |
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CTsBitmapScaleTask( CTsFastSwapAreaExtension& aObserver ); |
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~CTsBitmapScaleTask(); |
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void StartLD( CFbsBitmap* aSourceBitmap, |
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CFbsBitmap* aTargetBitmap ); |
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private: |
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void RunL(); |
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void DoCancel(); |
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private: |
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// Data |
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CTsFastSwapAreaExtension& iObserver; |
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CBitmapScaler* iScaler; // owned |
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CFbsBitmap* iSourceBmp; // owned |
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}; |
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/** |
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* Utility class containg methods for fast swap area handling. |
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*/ |
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class CTsFastSwapAreaExtension: public CBase |
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{ |
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public: |
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/** |
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* Two-phase constructor. |
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* |
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* @param aRect Area where fast swap info & list should draw itself. |
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* @param aParent Parent CoeControl. |
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*/ |
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static CTsFastSwapAreaExtension* NewL( CTsFastSwapArea& aFastSwapArea, |
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CEikonEnv& aEnv); |
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/** |
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* @copydoc NewL |
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*/ |
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static CTsFastSwapAreaExtension* NewLC( CTsFastSwapArea& aFastSwapArea, |
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CEikonEnv& aEnv ); |
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/** |
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* Destructor. |
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*/ |
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~CTsFastSwapAreaExtension(); |
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private: |
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/** |
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* @copydoc NewL |
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*/ |
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void ConstructL(); |
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/** |
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* C++ constructor. |
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*/ |
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CTsFastSwapAreaExtension( CTsFastSwapArea& aFastSwapArea, |
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CEikonEnv& aEnv ); |
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public: |
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/** |
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* Returns current screen orientation: |
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* |
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* @return 1 if landscape, 0 if portait |
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*/ |
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TInt GetCurrentScreenOrientation(); |
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/** |
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* Retrieves variety value, based on current screen resolution. |
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* |
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* @param aVariety result of the function, 0 value means portrait |
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* value of 1 indicates landscape |
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* @return ETrue if screen resolution differs from vale returned by |
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* layout meta data functions. |
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*/ |
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TBool GetVariety( TInt& aVariety ); |
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/** |
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* Returns rectangles for fast swap area controls |
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*/ |
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void GetFastSwapAreaRects( RArray<TAknLayoutRect>& aRects ); |
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/** |
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* Returns the position of the given item inside grid world rect. |
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* Returns point in the middle of the view rectangle. |
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* |
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* @param aItemIdx index of the item for which calculation will be done |
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*/ |
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TPoint ItemViewPosition( TInt aItemIdx ); |
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/** |
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* Returns index of the shown item, based on the logical |
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* position of the grids view. Item that is closest to the |
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* middle of screen is returned. |
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* |
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* @param aViewPos grids view position. This must be point in |
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* the middle of the view rectangle |
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* @return index of the item |
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*/ |
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TInt ViewToVisibleItem( const TPoint aViewPos ); |
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/** |
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* Launches increasing pop-up feedback. |
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*/ |
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void LaunchPopupFeedback(); |
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/** |
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* Retrieves and returns size for image graphics. |
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*/ |
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TSize PreferredImageSize(); |
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|
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/** |
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* Calculates the correct size if aspect ratio needs to be preserved. |
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*/ |
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TSize CalculateSizePreserveRatio(const TSize& aTargetAreaSize, |
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const TSize& aSourceSize); |
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/** |
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* Makes a copy of the given bitmap. |
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* Also scaled to the given size, but maintains aspect ratio, |
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* so the size of the returned bitmap may be less then aSize. |
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*/ |
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CFbsBitmap* CopyBitmapL( TInt aFbsHandle, TSize aSize, TBool aIsScreenshot ); |
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/** |
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* Duplicates handle to bitmap. |
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*/ |
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CFbsBitmap* DuplicateBitmapLC( TInt aFbsHandle ); |
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/** |
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* Duplicates handle to bitmap. |
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*/ |
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void ScaleBitmapL( CFbsBitmap* aSourceBitmap, |
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CFbsBitmap* aTargetBitmap ); |
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/** |
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* Cancels ongoing scale tasks |
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*/ |
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void CancelScaleTasks(); |
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/** |
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* Callback for updating task list. |
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*/ |
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void ScaleFinished( CTsBitmapScaleTask* iFinishedTask ); |
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private: // Data |
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CTsFastSwapArea& iFastSwapArea; |
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CEikonEnv& iEnv; |
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RPointerArray<CTsBitmapScaleTask> iScaleTasks; |
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}; |
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#endif /* TSFASTSWAPAREAUTILS_H_ */ |