|
1 /* |
|
2 * Copyright (c) 2010 Ixonos Plc. |
|
3 * All rights reserved. |
|
4 * This component and the accompanying materials are made available |
|
5 * under the terms of the "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 * Ixonos Plc |
|
14 * |
|
15 * Description: |
|
16 * |
|
17 */ |
|
18 |
|
19 |
|
20 |
|
21 #ifndef IMAGEEDITORIMAGECONTROLLER_H |
|
22 #define IMAGEEDITORIMAGECONTROLLER_H |
|
23 |
|
24 // INCLUDES |
|
25 #include <e32base.h> |
|
26 #include <fbs.h> |
|
27 |
|
28 #include "ImageControllerObserver.h" |
|
29 |
|
30 |
|
31 // FORWARD DECLARATIONS |
|
32 class CImageEditorPluginManager; |
|
33 class CImageEditorImageHandler; |
|
34 |
|
35 /* CLASS: CImageController |
|
36 * |
|
37 * CImageController is an active object controlling asynchronous saving |
|
38 * and loading of images. Also, synchronous methods for renaming and deleting |
|
39 * images can be found. |
|
40 */ |
|
41 class CImageController : public CActive |
|
42 { |
|
43 |
|
44 public: |
|
45 |
|
46 /** @name Methods:*/ |
|
47 //@{ |
|
48 |
|
49 /** NewL factory method, pops cleanupstack |
|
50 * |
|
51 * @param aObserver - CImageController observer instance, ownership not changed |
|
52 * @param aManager - CImageEditorPluginManager instance |
|
53 * @return pointer to created CImageController object |
|
54 */ |
|
55 static CImageController * NewL ( |
|
56 MImageControllerObserver * aObserver, |
|
57 CImageEditorPluginManager * aManager |
|
58 ); |
|
59 |
|
60 /** Destructor |
|
61 * |
|
62 * @param - |
|
63 * @return - |
|
64 */ |
|
65 virtual ~CImageController (); |
|
66 |
|
67 /** LoadImage |
|
68 * |
|
69 * Loads image. |
|
70 * |
|
71 * @param aFileName - name of the image file to be loaded |
|
72 * @return - |
|
73 */ |
|
74 void LoadImageL (const TDesC & aFileName); |
|
75 |
|
76 /** SaveImage |
|
77 * |
|
78 * Saves image |
|
79 * |
|
80 * @param aFileName - saved image name |
|
81 * @param aProgressCount - On return, contains the number of blocks to progress |
|
82 * @return - |
|
83 */ |
|
84 void SaveImageL (const TDesC & aFileName); |
|
85 |
|
86 /** RenameImage |
|
87 * |
|
88 * Renames image. |
|
89 * |
|
90 * @param aFileNameSrc - source image name |
|
91 * @param aFileNameDst - destination image name |
|
92 * @return KErrNone if no errors, system wide error otherwise |
|
93 */ |
|
94 TInt RenameImage ( |
|
95 const TDesC & aFileNameSrc, |
|
96 const TDesC & aFileNameDst |
|
97 ) const; |
|
98 |
|
99 /** DeleteImage |
|
100 * |
|
101 * Deletes image. |
|
102 * |
|
103 * @param aFileName - image name to be deleted |
|
104 * @return KErrNone if no errors, system wide error otherwise |
|
105 */ |
|
106 TInt DeleteImage (const TDesC & aFileName) const; |
|
107 |
|
108 /** CreatePreviewBitmapL |
|
109 * |
|
110 * Creates the preview bitmap. |
|
111 * |
|
112 * @param - |
|
113 * @return - |
|
114 */ |
|
115 void CreatePreviewBitmapL (); |
|
116 |
|
117 /** DeletePreviewBitmap |
|
118 * |
|
119 * Deletes the preview bitmap. |
|
120 * |
|
121 * @param - |
|
122 * @return - |
|
123 */ |
|
124 void DeletePreviewBitmap (); |
|
125 |
|
126 /** CancelOperation |
|
127 * |
|
128 * Cancels loading, saving or processing operation. |
|
129 * This does not call the AO's Cancel(), but rather waits for the nexts RunL() |
|
130 * to finish, and finishes after that. |
|
131 * |
|
132 * @param aOperation - the on-going operation |
|
133 * @return - |
|
134 */ |
|
135 void CancelOperation(TBool aForce = EFalse); |
|
136 |
|
137 |
|
138 //@} |
|
139 |
|
140 protected: |
|
141 |
|
142 /** @name Methods:*/ |
|
143 //@{ |
|
144 |
|
145 /** DoCancel |
|
146 * |
|
147 * Implements cancellation of outstanding request. This method is |
|
148 * called from Cancel() of active object. Cancels asynchronous request |
|
149 * and returns. DOES NOT WAIT THE REQUEST TO COMPLETE. |
|
150 * |
|
151 * @param - |
|
152 * @return - |
|
153 * @see CActive |
|
154 */ |
|
155 virtual void DoCancel(); |
|
156 |
|
157 /** RunL |
|
158 * |
|
159 * Active object's request completion handler. |
|
160 * |
|
161 * Active scheduler selects this class based on class priority and |
|
162 * marks the status completed before calling this method. This method |
|
163 * should handle the completion as fast as possible and return or issue |
|
164 * another request. |
|
165 * |
|
166 * @param - |
|
167 * @return - |
|
168 * @see CActive |
|
169 */ |
|
170 virtual void RunL (); |
|
171 |
|
172 |
|
173 //@} |
|
174 |
|
175 /** @name Members:*/ |
|
176 //@{ |
|
177 |
|
178 //@} |
|
179 |
|
180 private: |
|
181 |
|
182 /** @name Methods:*/ |
|
183 //@{ |
|
184 |
|
185 /** Default constructor |
|
186 * |
|
187 * @param - |
|
188 * @return - |
|
189 */ |
|
190 CImageController (); |
|
191 |
|
192 /** Second phase constructor, may leave |
|
193 * |
|
194 * @param aObserver - CImageController observer instance, ownership not changed |
|
195 * @param aManager - CImageEditorPluginManager instance |
|
196 * @return - |
|
197 */ |
|
198 void ConstructL ( |
|
199 MImageControllerObserver * aObserver, |
|
200 CImageEditorPluginManager * aManager |
|
201 ); |
|
202 |
|
203 /** CompleteRequest |
|
204 * |
|
205 * Force RunL |
|
206 * |
|
207 * @param - |
|
208 * @return - |
|
209 */ |
|
210 void CompleteRequest(); |
|
211 |
|
212 /** CalculateProgressInterval |
|
213 * |
|
214 * The saving operation typically consists of thousands of blocks. |
|
215 * It makes no sense to update the progress bar that often. |
|
216 * |
|
217 * @param - |
|
218 * @return - |
|
219 */ |
|
220 void CalculateProgressInterval (TInt aBlockCount); |
|
221 //@} |
|
222 |
|
223 /** @name Members:*/ |
|
224 //@{ |
|
225 /// Image Handler |
|
226 CImageEditorImageHandler * iImageHandler; |
|
227 |
|
228 /// Plug-in Manager |
|
229 CImageEditorPluginManager * iManager; |
|
230 |
|
231 /// CImageController observer instance |
|
232 MImageControllerObserver * iObserver; |
|
233 |
|
234 /// Preview bitmap |
|
235 CFbsBitmap * iPreview; |
|
236 |
|
237 /// Jpeg Image |
|
238 TBool iJpegImage; |
|
239 |
|
240 /// JPEG quality |
|
241 TInt iQuality; |
|
242 |
|
243 /// Last operation |
|
244 MImageControllerObserver::TOperationCode iOperation; |
|
245 |
|
246 /// Progress bar update interval (number of blocks) |
|
247 TInt iProgressBarInterval; |
|
248 |
|
249 // Current save progress in percentage |
|
250 TInt iSavedPercentage; |
|
251 |
|
252 // Previous save progress in percentage |
|
253 TInt iSavedPercentageOld; |
|
254 |
|
255 /// Is operation cancelled |
|
256 TBool iIsCancelled; |
|
257 |
|
258 //@} |
|
259 |
|
260 }; |
|
261 |
|
262 |
|
263 #endif |