author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Fri, 19 Mar 2010 09:28:59 +0200 | |
changeset 23 | 74c9f037fd5d |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2008-2009 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: Base class for tasks which load thumbnails |
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* |
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*/ |
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#include "glxtnloadthumbnailtask.h" |
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#include <glxassert.h> |
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#include <glxtracer.h> |
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#include <glxthumbnail.h> |
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#include <imageconversion.h> |
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#include <s32mem.h> |
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#include "glxtnfileinfo.h" |
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#include "glxtnfileutility.h" |
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#include "glxtnimagedecoderfactory.h" |
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#include "glxtnthumbnailrequest.h" |
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#include "mglxtnstorage.h" |
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// --------------------------------------------------------------------------- |
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// Constructor |
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// --------------------------------------------------------------------------- |
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// |
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CGlxtnLoadThumbnailTask::CGlxtnLoadThumbnailTask( const TGlxtnTaskId& aId, |
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const TGlxThumbnailRequest& aRequestInfo, |
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CGlxtnFileUtility& aFileUtility, |
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MGlxtnThumbnailCreatorClient& aClient) : |
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CGlxtnClientTask( aId, aRequestInfo.iId, aClient ), |
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iFileUtility( aFileUtility ), iRequestedSize( aRequestInfo.iSizeClass ), |
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iDrmAllowed( aRequestInfo.iDrmAllowed ) |
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{ |
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TRACER("CGlxtnLoadThumbnailTask::CGlxtnLoadThumbnailTask()"); |
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} |
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// --------------------------------------------------------------------------- |
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// Destructor |
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// --------------------------------------------------------------------------- |
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// |
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CGlxtnLoadThumbnailTask::~CGlxtnLoadThumbnailTask() |
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{ |
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TRACER("CGlxtnLoadThumbnailTask::~CGlxtnLoadThumbnailTask()"); |
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delete iDecoder; |
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delete iThumbnail; |
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delete iThumbData; |
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delete iInfo; |
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} |
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// ----------------------------------------------------------------------------- |
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// ConstructL |
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// ----------------------------------------------------------------------------- |
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// |
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void CGlxtnLoadThumbnailTask::ConstructL( TInt aBitmapHandle ) |
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{ |
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TRACER("void CGlxtnLoadThumbnailTask::ConstructL()"); |
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// Duplicate the client's bitmap |
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iThumbnail = new (ELeave) CFbsBitmap(); |
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User::LeaveIfError( iThumbnail->Duplicate( aBitmapHandle ) ); |
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} |
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// --------------------------------------------------------------------------- |
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// DoCancel |
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// --------------------------------------------------------------------------- |
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// |
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void CGlxtnLoadThumbnailTask::DoCancel() |
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{ |
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TRACER("void CGlxtnLoadThumbnailTask::DoCancel()"); |
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if ( iDecoder ) |
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{ |
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iDecoder->Cancel(); |
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} |
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Storage()->StorageCancel(); |
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} |
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// --------------------------------------------------------------------------- |
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// LoadThumbnailL |
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// --------------------------------------------------------------------------- |
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// |
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TBool CGlxtnLoadThumbnailTask::LoadThumbnailL( TRequestStatus& aStatus ) |
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{ |
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TRACER("TBool CGlxtnLoadThumbnailTask::LoadThumbnailL()"); |
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GLX_ASSERT_DEBUG( iInfo, Panic( EGlxPanicNullPointer ), "No file info" ); |
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if ( Storage() && iFileUtility.IsPersistentSize( iRequestedSize ) ) |
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{ |
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Storage()->LoadThumbnailDataL( iThumbData, iFormat, ItemId(), |
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*iInfo, iRequestedSize, &aStatus ); |
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Revision: 201007
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parents:
diff
changeset
|
104 |
iState = EStateLoading; |
74c9f037fd5d
Revision: 201007
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parents:
diff
changeset
|
105 |
|
74c9f037fd5d
Revision: 201007
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parents:
diff
changeset
|
106 |
return ETrue; |
74c9f037fd5d
Revision: 201007
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diff
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|
107 |
} |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
108 |
|
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
109 |
return EFalse; |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
110 |
} |
74c9f037fd5d
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parents:
diff
changeset
|
111 |
|
74c9f037fd5d
Revision: 201007
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diff
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|
112 |
// --------------------------------------------------------------------------- |
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diff
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|
113 |
// HandleLoadedThumbnailL |
74c9f037fd5d
Revision: 201007
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diff
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|
114 |
// --------------------------------------------------------------------------- |
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diff
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|
115 |
// |
74c9f037fd5d
Revision: 201007
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diff
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|
116 |
TBool CGlxtnLoadThumbnailTask::HandleLoadedThumbnailL(TRequestStatus& aStatus) |
74c9f037fd5d
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|
117 |
{ |
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diff
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|
118 |
TRACER("CGlxtnLoadThumbnailTask::HandleLoadedThumbnailL()"); |
74c9f037fd5d
Revision: 201007
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parents:
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|
119 |
TBool active = EFalse; |
74c9f037fd5d
Revision: 201007
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diff
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|
120 |
|
74c9f037fd5d
Revision: 201007
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diff
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|
121 |
User::LeaveIfNull( iThumbData ); |
74c9f037fd5d
Revision: 201007
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|
122 |
|
74c9f037fd5d
Revision: 201007
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|
123 |
switch ( iFormat ) |
74c9f037fd5d
Revision: 201007
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|
124 |
{ |
74c9f037fd5d
Revision: 201007
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|
125 |
case EGlxIDF_Bitmap: |
74c9f037fd5d
Revision: 201007
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|
126 |
{ |
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Revision: 201007
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|
127 |
CFbsBitmap* bitmap = new (ELeave) CFbsBitmap; |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
128 |
CleanupStack::PushL( bitmap ); |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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|
129 |
|
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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diff
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|
130 |
RDesReadStream stream( *iThumbData ); |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
131 |
CleanupClosePushL( stream ); |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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|
132 |
stream >> *bitmap; |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
133 |
CleanupStack::PopAndDestroy( &stream ); |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
134 |
|
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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diff
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|
135 |
User::LeaveIfError( iThumbnail->Resize( bitmap->SizeInPixels() ) ); |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
136 |
|
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
137 |
CFbsBitmapDevice* device = CFbsBitmapDevice::NewL( iThumbnail ); |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
138 |
CleanupStack::PushL( device ); |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
139 |
CFbsBitGc* context = NULL; |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
140 |
User::LeaveIfError( device->CreateContext( context ) ); |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
141 |
CleanupStack::PushL( context ); |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
142 |
|
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
143 |
context->BitBlt( TPoint(), bitmap ); |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
144 |
|
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
145 |
CleanupStack::PopAndDestroy( context ); |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
146 |
CleanupStack::PopAndDestroy( device ); |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
147 |
|
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
148 |
CleanupStack::PopAndDestroy( bitmap ); |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
149 |
} |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
150 |
break; |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
151 |
|
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
152 |
case EGlxIDF_JPEG: |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
153 |
iDecoder = GlxtnImageDecoderFactory::NewL( |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
154 |
iFileUtility.FsSession(), *iThumbData ); |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
155 |
DecodeThumbnailL( aStatus, EFalse ); |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
156 |
active = ETrue; |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
157 |
break; |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
158 |
|
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
159 |
default: |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
160 |
User::Leave( KErrNotSupported ); |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
161 |
break; |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
162 |
} |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
163 |
|
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
164 |
return active; |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
165 |
} |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
166 |
|
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
167 |
// --------------------------------------------------------------------------- |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
168 |
// DecodeThumbnailL |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
169 |
// --------------------------------------------------------------------------- |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
170 |
// |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
171 |
void CGlxtnLoadThumbnailTask::DecodeThumbnailL( TRequestStatus& aStatus, |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
172 |
TBool aScaleBitmap ) |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
173 |
{ |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
174 |
TRACER("CGlxtnLoadThumbnailTask::DecodeThumbnailL()"); |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
175 |
GLX_ASSERT_DEBUG( iDecoder, Panic( EGlxPanicNullPointer ), "No decoder" ); |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
176 |
|
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
177 |
// Resize empty bitmap to required size |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
178 |
TSize thumbSize( iDecoder->FrameInfo().iOverallSizeInPixels ); |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
179 |
if ( aScaleBitmap ) |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
180 |
{ |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
181 |
// Find scaling factor which makes the image closest to requested size |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
182 |
// Use biggest size less than 150% of the requested size |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
183 |
TInt maxWidth = iRequestedSize.iWidth * 3 / 2; |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
184 |
TInt maxHeight = iRequestedSize.iHeight * 3 / 2; |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
185 |
TInt shift = 0; |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
186 |
while ( shift < 3 |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
187 |
&& ((thumbSize.iWidth >> shift) > maxWidth |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
188 |
|| (thumbSize.iHeight >> shift) > maxHeight) ) |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
189 |
{ |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
190 |
shift++; |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
191 |
} |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
192 |
TInt fudge = (1 << shift) - 1; // Used to "round up" the scaled values |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
193 |
thumbSize.SetSize((thumbSize.iWidth + fudge) >> shift, |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
194 |
(thumbSize.iHeight + fudge) >> shift); |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
195 |
} |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
196 |
User::LeaveIfError( iThumbnail->Resize(thumbSize) ); |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
197 |
|
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
198 |
iDecoder->Convert( &aStatus, *iThumbnail ); |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
199 |
iState = EStateDecodingThumbnail; |
74c9f037fd5d
Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
200 |
} |