1 /* |
|
2 * Copyright (c) 2008-2008 Nokia Corporation and/or its subsidiary(-ies). |
|
3 * All rights reserved. |
|
4 * This component and the accompanying materials are made available |
|
5 * under the terms of "Eclipse Public License v1.0" |
|
6 * which accompanies this distribution, and is available |
|
7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
8 * |
|
9 * Initial Contributors: |
|
10 * Nokia Corporation - initial contribution. |
|
11 * |
|
12 * Contributors: |
|
13 * |
|
14 * Description: Implementation of the utility class for asynchronously decoding the header thumbnail image |
|
15 * |
|
16 */ |
|
17 |
|
18 #include <bitmaptransforms.h> |
|
19 #include "ccappcommlauncherimagedecoding.h" |
|
20 |
|
21 const TInt KDelay = 500000; // 0.5s |
|
22 // --------------------------------------------------------------------------- |
|
23 // Two-phase construction |
|
24 // --------------------------------------------------------------------------- |
|
25 // |
|
26 CCCAppCommLauncherImageDecoding* CCCAppCommLauncherImageDecoding::NewL( |
|
27 CCCAppCommLauncherHeaderControl* aHeader, const TDesC8* aBitmapData, const TDesC* aImageFile) |
|
28 { |
|
29 CCCAppCommLauncherImageDecoding* self = new (ELeave) CCCAppCommLauncherImageDecoding(aHeader); |
|
30 CleanupStack::PushL(self); |
|
31 self->ConstructL(aBitmapData, aImageFile); |
|
32 CleanupStack::Pop(self); |
|
33 return self; |
|
34 } |
|
35 |
|
36 // --------------------------------------------------------------------------- |
|
37 // First phase (C++) constructor |
|
38 // --------------------------------------------------------------------------- |
|
39 // |
|
40 CCCAppCommLauncherImageDecoding::CCCAppCommLauncherImageDecoding(CCCAppCommLauncherHeaderControl* aHeader) : |
|
41 CActive( CActive::EPriorityStandard ), iHeader(aHeader) |
|
42 { |
|
43 CActiveScheduler::Add(this); |
|
44 } |
|
45 |
|
46 // --------------------------------------------------------------------------- |
|
47 // ConstructL, second phase constructor |
|
48 // --------------------------------------------------------------------------- |
|
49 // |
|
50 void CCCAppCommLauncherImageDecoding::ConstructL(const TDesC8* aBitmapData, const TDesC* aImageFile) |
|
51 { |
|
52 if ( aImageFile ) |
|
53 { |
|
54 iImageFullName = aImageFile->AllocL(); |
|
55 } |
|
56 if ( aBitmapData ) |
|
57 { |
|
58 iBitmapData = aBitmapData->AllocL(); |
|
59 } |
|
60 User::LeaveIfError( iFs.Connect() ); |
|
61 iTimer.CreateLocal(); |
|
62 } |
|
63 |
|
64 // --------------------------------------------------------------------------- |
|
65 // Destructor |
|
66 // --------------------------------------------------------------------------- |
|
67 // |
|
68 CCCAppCommLauncherImageDecoding::~CCCAppCommLauncherImageDecoding() |
|
69 { |
|
70 DoCancel(); |
|
71 if (iBitmap) |
|
72 { |
|
73 delete iBitmap; |
|
74 iBitmap = NULL; |
|
75 } |
|
76 if (iBitmapData) |
|
77 { |
|
78 delete iBitmapData; |
|
79 iBitmapData = NULL; |
|
80 } |
|
81 if (iImageFullName) |
|
82 { |
|
83 delete iImageFullName; |
|
84 } |
|
85 iFs.Close(); |
|
86 iTimer.Close(); |
|
87 } |
|
88 |
|
89 // --------------------------------------------------------------------------- |
|
90 // Starts the decoding process |
|
91 // --------------------------------------------------------------------------- |
|
92 // |
|
93 void CCCAppCommLauncherImageDecoding::StartL( TSize aImageSize ) |
|
94 { |
|
95 iDecoderState = ECcaConvertThumbnailImage; |
|
96 iBitmapSize = aImageSize; |
|
97 CreateBitmapL(); |
|
98 } |
|
99 |
|
100 // --------------------------------------------------------------------------- |
|
101 // Called by the active object framework when the decoding (request) is |
|
102 // completed. |
|
103 // --------------------------------------------------------------------------- |
|
104 // |
|
105 void CCCAppCommLauncherImageDecoding::RunL() |
|
106 { |
|
107 User::LeaveIfError( iStatus.Int() ); |
|
108 switch ( iDecoderState ) |
|
109 { |
|
110 case ECcaConvertThumbnailImage: |
|
111 { |
|
112 iDecoderState = ECcaScaleThumbnail; |
|
113 ScaleBitmapL(); |
|
114 break; |
|
115 } |
|
116 |
|
117 case ECcaScaleThumbnail: |
|
118 { |
|
119 if ( iImageFullName ) |
|
120 { |
|
121 iDecoderState = ECcaReadImageFromFile; |
|
122 SetPriority( EPriorityIdle ); |
|
123 iTimer.After( iStatus, KDelay ); |
|
124 SetActive(); |
|
125 } |
|
126 // don't break here |
|
127 } |
|
128 |
|
129 case ECcaScaleImage: |
|
130 { |
|
131 // Ownership of the bitmap is transferred |
|
132 iHeader->SetBitmap( iBitmap ); |
|
133 iBitmap = NULL; |
|
134 delete iBitmapScaler; |
|
135 iBitmapScaler = NULL; |
|
136 delete iImgDecoder; |
|
137 iImgDecoder = NULL; |
|
138 break; |
|
139 } |
|
140 |
|
141 case ECcaReadImageFromFile: |
|
142 { |
|
143 if ( iImageFullName ) |
|
144 { |
|
145 iDecoderState = ECcaConvertImageFromFile; |
|
146 CreateBitmapL(); |
|
147 } |
|
148 break; |
|
149 } |
|
150 |
|
151 case ECcaConvertImageFromFile: |
|
152 { |
|
153 iDecoderState = ECcaScaleImage; |
|
154 SetPriority( EPriorityStandard ); |
|
155 ScaleBitmapL(); |
|
156 break; |
|
157 } |
|
158 |
|
159 default: |
|
160 break; |
|
161 } |
|
162 } |
|
163 // --------------------------------------------------------------------------- |
|
164 // Called when the decoding (request) is cancelled for some reason. |
|
165 // --------------------------------------------------------------------------- |
|
166 // |
|
167 void CCCAppCommLauncherImageDecoding::DoCancel() |
|
168 { |
|
169 if (iImgDecoder) |
|
170 { |
|
171 iImgDecoder->Cancel(); |
|
172 delete iImgDecoder; |
|
173 iImgDecoder = NULL; |
|
174 } |
|
175 if ( iBitmapScaler ) |
|
176 { |
|
177 iBitmapScaler->Cancel(); |
|
178 delete iBitmapScaler; |
|
179 iBitmapScaler = NULL; |
|
180 } |
|
181 iTimer.Cancel(); |
|
182 } |
|
183 |
|
184 void CCCAppCommLauncherImageDecoding::ScaleBitmapL() |
|
185 { |
|
186 iBitmapScaler = CBitmapScaler::NewL(); |
|
187 iBitmapScaler->Scale( &iStatus, *iBitmap, iBitmapSize ); |
|
188 SetActive(); |
|
189 } |
|
190 |
|
191 void CCCAppCommLauncherImageDecoding::CreateBitmapL() |
|
192 { |
|
193 if ( iDecoderState == ECcaConvertThumbnailImage ) |
|
194 { |
|
195 iImgDecoder = CImageDecoder::DataNewL( iFs, *iBitmapData, CImageDecoder::EOptionAlwaysThread ); |
|
196 } |
|
197 else if ( iDecoderState == ECcaConvertImageFromFile ) |
|
198 { |
|
199 // leaaves if file doesn't exist |
|
200 TRAPD ( initDecoder, iImgDecoder = CImageDecoder::FileNewL( iFs, *iImageFullName, CImageDecoder::EOptionAlwaysThread ) ); |
|
201 if ( initDecoder ) |
|
202 { |
|
203 delete iBitmapScaler; |
|
204 iBitmapScaler = NULL; |
|
205 delete iImgDecoder; |
|
206 iImgDecoder = NULL; |
|
207 return; |
|
208 } |
|
209 } |
|
210 |
|
211 if ( !iBitmap ) |
|
212 { |
|
213 TFrameInfo info = iImgDecoder->FrameInfo(); |
|
214 iBitmap = new ( ELeave ) CFbsBitmap; |
|
215 User::LeaveIfError( iBitmap->Create( info.iOverallSizeInPixels, info.iFrameDisplayMode )); |
|
216 } |
|
217 |
|
218 iStatus = KRequestPending; |
|
219 iImgDecoder->Convert( &iStatus, *iBitmap ); |
|
220 SetActive(); |
|
221 } |
|