author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 11 May 2010 16:14:23 +0300 | |
branch | RCL_3 |
changeset 17 | d8eca2b0590d |
parent 0 | 040fcad49f44 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2006 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: Takes care of storing and serving the slides |
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* to Slideshow plugin |
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* |
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*/ |
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#ifndef C_SLIDESHOWMODEL_H |
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#define C_SLIDESHOWMODEL_H |
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#include <e32base.h> |
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class CSlideshowSlide; |
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// Slide Array's size. 5 seems like a reasonable granularity |
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const TInt KSlideshowSlideArrayGranularity = 5; |
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//Slide status |
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//this is only called in startplugin, Dont call it anywhere |
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//Get next slide status |
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const TInt KStatusNoSlide = 0; //no side |
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const TInt KStatusSlideDecoded = 1; //already decoded |
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const TInt KStatusDecodingInProgress =2; //decoding in progress |
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const TInt KStatusSlideNotDecoding = 3; //slide is there but not decoded |
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const TInt KStatusSlideDecodeingFailed = 4; //could not decode the file |
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|
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// Slideshow model. |
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// Contains slideshow slides, serves the slides to Slideshow plugin |
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class CSlideshowModel : public CBase |
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{ |
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public: |
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/** |
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* Return a new CSlideshowModel object |
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*/ |
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static CSlideshowModel* NewL(); |
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/** |
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* Desconstructor |
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*/ |
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virtual ~CSlideshowModel(); |
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private: |
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/** |
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* Default constructor |
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*/ |
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CSlideshowModel(); |
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/* |
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* Two-phase constructor, initialises member arrays and stuff |
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*/ |
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virtual void ConstructL(); |
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public: // Access functions |
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/* |
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* Number of slides query. |
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*/ |
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TInt NumberOfSlides() const; |
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/* |
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* Add a slide to the end of the array. |
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* |
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* @param aSlide The new slide which will be added to the silde array. |
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*/ |
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void AppendSlideL(CSlideshowSlide* aSlide); |
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/* |
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* Insert a slide at <aIndex>. Space must be reserved. |
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* |
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* @param aIndex The postion index which the new slide will be insert to. |
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* @param aSilde The new slide which will be insert. |
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*/ |
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void InsertSlideL(TInt aIndex, CSlideshowSlide* aSlide); |
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/* |
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* Delete slide at <aIndex>. |
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* |
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* @param aIndex The slide at <aIndex> will be delete. |
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*/ |
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void DeleteSlide(TInt aIndex); |
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/* |
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* Delete all slides. |
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*/ |
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void DeleteAll(); |
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/* |
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* Get slide at position <aIndex>. |
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* |
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* @return a slide at position <aIndex>. |
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*/ |
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CSlideshowSlide* SlideAt(TInt aIndex) const; |
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/* |
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* Get current slide index. |
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* |
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* @return the current slide index. |
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*/ |
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inline TInt CurrentSlideIndex() const; |
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|
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/* |
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* Set current slide index. |
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* |
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* @param aIndex The slide index, which will be show. |
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*/ |
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inline void SetCurrentSlideIndex(TInt aIndex); |
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|
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/* |
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* Get next slide in sequence |
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* |
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* @param aRandom No used now. |
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* @return the next slide. |
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*/ |
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CSlideshowSlide* NextSlide(TBool aRandom); |
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|
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/* |
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* Get slide status: decoded, decoding ,not started,decoding failed,no slide. |
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* |
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* @param aSlide the slide which status will be detected. |
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* @return status of aSlide. |
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*/ |
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TInt SlideStatus(CSlideshowSlide* aSlide); |
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|
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/* |
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* Prepare next slide. |
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* @param aRandom Whether select next slide random.( ETrue is random, EFalse is sequential) |
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* @param aTargetSize The slide Size. |
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*/ |
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void PrepareNextSlide(TBool aRandom, const TSize& aTargetSize); |
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|
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/* |
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* Release next slide. |
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*/ |
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void ReleaseNextSlide(); |
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|
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/* |
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* Release Current slide. |
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*/ |
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void ReleaseCurrentSlide(); |
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|
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/* |
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* Get next slide index. |
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* |
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* @return the position index which slide will be on. |
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*/ |
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inline TInt NextSlideIndex() const; |
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|
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/* |
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* Reserve space for <aCount> slides. |
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* |
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* @param aCount The slide number. |
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*/ |
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void SetReserveL(TInt aCount); |
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|
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/* |
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* Query if model is busy (decoding a slide). |
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* |
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* @return status whether the model is ready.(ETrue is ready, EFalse is not) |
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*/ |
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TBool Busy(); |
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|
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/* |
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* Reset slide sequence, note that this will not release current image |
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*/ |
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inline void ResetSlideSequence(); |
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|
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private: // Utility functions |
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/* |
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* Get a random number in the range aMin - aMax (inclusive) |
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* |
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* @param aMax The upper limited. |
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* @param aMin The lower limited. |
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* @return an random number which is between aMax and aMin. |
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*/ |
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TInt Random(TInt aMax, TInt aMin = 0); |
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|
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private: |
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/* |
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* Slide array |
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*/ |
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CArrayPtrFlat<CSlideshowSlide>* iSlides; |
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|
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/* |
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* Current slide index |
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*/ |
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TInt iCurrentSlide; |
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|
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/* |
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* Next slide index |
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*/ |
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TInt iNextSlide; |
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|
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/* |
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* Random seed |
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*/ |
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TInt64 iRandSeed; |
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|
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/* |
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* Busy flag |
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*/ |
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TBool iBusy; |
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}; |
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|
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//------------------------------------------------------------------------------ |
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// CSlideshowModel::CurrentSlideIndex |
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//------------------------------------------------------------------------------ |
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// |
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TInt CSlideshowModel::CurrentSlideIndex() const |
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{ |
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return iCurrentSlide; |
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} |
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//------------------------------------------------------------------------------ |
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// CSlideshowModel::SetCurrentSlideIndex |
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//------------------------------------------------------------------------------ |
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// |
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void CSlideshowModel::SetCurrentSlideIndex(TInt aIndex) |
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{ |
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iCurrentSlide = aIndex; |
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} |
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//------------------------------------------------------------------------------ |
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// CSlideshowModel::NextSlideIndex |
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//------------------------------------------------------------------------------ |
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// |
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TInt CSlideshowModel::NextSlideIndex() const |
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{ |
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return iNextSlide; |
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} |
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//------------------------------------------------------------------------------ |
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// CSlideshowModel::ResetSlideSequence |
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//------------------------------------------------------------------------------ |
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// |
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void CSlideshowModel::ResetSlideSequence() |
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{ |
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iCurrentSlide = 0; |
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iNextSlide = -1; |
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} |
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#endif // C_CSLIDESHOWMODEL_H |
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// End of file |