|
1 /* |
|
2 * Copyright (c) 2006-2007 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 Image Viewer class. |
|
15 * |
|
16 */ |
|
17 |
|
18 |
|
19 // INCLUDE FILES |
|
20 #include "CIHLImageViewerExtJpg.h" |
|
21 |
|
22 #include "CIHLBitmap.h" |
|
23 #include "CIHLBitmapProcessor.h" |
|
24 #include "IHLImplementationIds.h" |
|
25 #include <IHLInterfaceIds.h> |
|
26 #include <IclExtJpegApi.h> |
|
27 #include <ImageCodecData.h> |
|
28 #include <MIHLViewerObserver.h> |
|
29 #include "MIHLFileImageExtJpg.h" |
|
30 #include <fbs.h> |
|
31 |
|
32 // Private namespace for constants and functions |
|
33 namespace |
|
34 { |
|
35 // Panic function |
|
36 _LIT( KIHLImageViewerExtJpgPanic, "IHLImageViewerExtJpg" ); |
|
37 void Panic( TInt aPanicCode ) { User::Panic( KIHLImageViewerExtJpgPanic, aPanicCode ); } |
|
38 } |
|
39 |
|
40 // ============================ MEMBER FUNCTIONS =============================== |
|
41 // ----------------------------------------------------------------------------- |
|
42 // |
|
43 // C++ constructor can NOT contain any code, that might leave. |
|
44 // ----------------------------------------------------------------------------- |
|
45 CIHLImageViewerExtJpg::CIHLImageViewerExtJpg( const TSize& aViewerSize, |
|
46 MIHLFileImageExtJpg& aSource, |
|
47 MIHLBitmap& aDestination, |
|
48 MIHLViewerObserver& aObserver, |
|
49 const TUint32 aOptions ) |
|
50 : CTimer( EPriorityNormal ), iObserver( aObserver ), |
|
51 iSource( aSource ), iDestination( aDestination ), |
|
52 iOptions( aOptions ), iViewerSize( aViewerSize ), iSrcBitmapScaleFactor(1) |
|
53 { |
|
54 |
|
55 CActiveScheduler::Add( this ); |
|
56 } |
|
57 |
|
58 // ----------------------------------------------------------------------------- |
|
59 // |
|
60 // Two-phased constructor. |
|
61 // ----------------------------------------------------------------------------- |
|
62 CIHLImageViewerExtJpg* CIHLImageViewerExtJpg::NewL( const TSize& aViewerSize, |
|
63 MIHLFileImageExtJpg& aSource, |
|
64 MIHLBitmap& aDestination, |
|
65 MIHLViewerObserver& aObserver, |
|
66 const TUint32 aOptions ) |
|
67 { |
|
68 CIHLImageViewerExtJpg* self = new( ELeave ) CIHLImageViewerExtJpg( |
|
69 aViewerSize, aSource, aDestination, aObserver, aOptions ); |
|
70 CleanupStack::PushL( self ); |
|
71 self->ConstructL(); |
|
72 CleanupStack::Pop(); // self |
|
73 return self; |
|
74 } |
|
75 |
|
76 // ----------------------------------------------------------------------------- |
|
77 // |
|
78 // Symbian constructor can leave. |
|
79 // ----------------------------------------------------------------------------- |
|
80 void CIHLImageViewerExtJpg::ConstructL() |
|
81 { |
|
82 CTimer::ConstructL(); |
|
83 |
|
84 iCacheSource = CIHLBitmap::NewL(); |
|
85 iCacheDestination = CIHLBitmap::NewL(); |
|
86 |
|
87 // Check codec capabilities |
|
88 iCapabilities = iSource.CapabilitiesL(); |
|
89 if( !( iCapabilities & ( CExtJpegDecoder::ECapRotation + |
|
90 CExtJpegDecoder::ECapMirroring + |
|
91 CExtJpegDecoder::ECapFlipping ) ) ) |
|
92 { |
|
93 iInternalProcessingNeeded = ETrue; |
|
94 iProcessor = CIHLBitmapProcessor::NewL( iOptions ); |
|
95 } |
|
96 |
|
97 // Initialize settings and start load (default is zoom to fit) |
|
98 iSourceSize = iSource.Size(); |
|
99 CalculateZoomToFitRatio(); |
|
100 User::LeaveIfError( SetZoomRatio( iZoomToFitRatio ) ); |
|
101 } |
|
102 |
|
103 // ----------------------------------------------------------------------------- |
|
104 // Destructor |
|
105 // ----------------------------------------------------------------------------- |
|
106 CIHLImageViewerExtJpg::~CIHLImageViewerExtJpg() |
|
107 { |
|
108 Cancel(); |
|
109 if( iProcessor ) |
|
110 { |
|
111 delete iProcessor; |
|
112 } |
|
113 delete iCacheSource; |
|
114 delete iCacheDestination; |
|
115 } |
|
116 |
|
117 // ----------------------------------------------------------------------------- |
|
118 // CIHLImageViewerExtJpg::Id |
|
119 // ----------------------------------------------------------------------------- |
|
120 TIHLInterfaceType CIHLImageViewerExtJpg::Type() const |
|
121 { |
|
122 return TIHLInterfaceType( KIHLInterfaceIdImageViewer, KIHLImplementationIdImageViewerExtJpg ); |
|
123 } |
|
124 |
|
125 // ----------------------------------------------------------------------------- |
|
126 // CIHLImageViewerExtJpg::IsAnimation |
|
127 // ----------------------------------------------------------------------------- |
|
128 TBool CIHLImageViewerExtJpg::IsAnimation() const |
|
129 { |
|
130 return EFalse; |
|
131 } |
|
132 |
|
133 // ----------------------------------------------------------------------------- |
|
134 // CIHLImageViewerExtJpg::Play |
|
135 // ----------------------------------------------------------------------------- |
|
136 void CIHLImageViewerExtJpg::Play() |
|
137 { |
|
138 |
|
139 } |
|
140 |
|
141 // ----------------------------------------------------------------------------- |
|
142 // CIHLImageViewerExtJpg::Stop |
|
143 // ----------------------------------------------------------------------------- |
|
144 void CIHLImageViewerExtJpg::Stop() |
|
145 { |
|
146 |
|
147 } |
|
148 |
|
149 // ----------------------------------------------------------------------------- |
|
150 // CIHLImageViewerExtJpg::IsPlaying |
|
151 // ----------------------------------------------------------------------------- |
|
152 TBool CIHLImageViewerExtJpg::IsPlaying() const |
|
153 { |
|
154 return EFalse; |
|
155 } |
|
156 |
|
157 // ----------------------------------------------------------------------------- |
|
158 // CIHLImageViewerExtJpg::AnimationFrameCount |
|
159 // ----------------------------------------------------------------------------- |
|
160 TInt CIHLImageViewerExtJpg::AnimationFrameCount() const |
|
161 { |
|
162 return KErrNone; |
|
163 } |
|
164 |
|
165 // ----------------------------------------------------------------------------- |
|
166 // CIHLImageViewerExtJpg::AnimationFrame |
|
167 // ----------------------------------------------------------------------------- |
|
168 TInt CIHLImageViewerExtJpg::AnimationFrame() const |
|
169 { |
|
170 return KErrNone; |
|
171 } |
|
172 |
|
173 // ----------------------------------------------------------------------------- |
|
174 // CIHLImageViewerExtJpg::SetAnimationFrame |
|
175 // ----------------------------------------------------------------------------- |
|
176 TInt CIHLImageViewerExtJpg::SetAnimationFrame( TInt /*aFrameIndex*/ ) |
|
177 { |
|
178 return KErrNone; |
|
179 } |
|
180 |
|
181 // ----------------------------------------------------------------------------- |
|
182 // CIHLImageViewerExtJpg::SetViewerSize |
|
183 // ----------------------------------------------------------------------------- |
|
184 TInt CIHLImageViewerExtJpg::SetViewerSize( const TSize& aViewerSize, int aSrcBitmapScaleFactor ) |
|
185 { |
|
186 // Public API, negative value check -> panic also on hardware |
|
187 __ASSERT_ALWAYS( aViewerSize.iWidth >= 0 && |
|
188 aViewerSize.iHeight >= 0, Panic( KErrArgument ) ); |
|
189 |
|
190 iSrcBitmapScaleFactor = aSrcBitmapScaleFactor; |
|
191 |
|
192 // Save new viewer size |
|
193 iViewerSize = aViewerSize; |
|
194 |
|
195 // Recalculate source rect and destination size |
|
196 CalculateSourceRectAndDestinationSize(); |
|
197 |
|
198 // Recalculate zoom to fit ratio |
|
199 CalculateZoomToFitRatio(); |
|
200 |
|
201 // Start load |
|
202 return ApplySettings(); |
|
203 } |
|
204 |
|
205 // ----------------------------------------------------------------------------- |
|
206 // CIHLImageViewerExtJpg::ViewerSize |
|
207 // ----------------------------------------------------------------------------- |
|
208 TSize CIHLImageViewerExtJpg::ViewerSize() const |
|
209 { |
|
210 return iViewerSize; |
|
211 } |
|
212 |
|
213 // ----------------------------------------------------------------------------- |
|
214 // CIHLImageViewerExtJpg::MoveSourceRect |
|
215 // ----------------------------------------------------------------------------- |
|
216 TInt CIHLImageViewerExtJpg::MoveSourceRect( TInt aDx, TInt aDy ) |
|
217 { |
|
218 TInt dx( aDx ); |
|
219 TInt dy( aDy ); |
|
220 switch( iRotationAngle ) |
|
221 { |
|
222 case ERotationAngle0: |
|
223 { |
|
224 break; |
|
225 } |
|
226 case ERotationAngle90: |
|
227 { |
|
228 dx = aDy; |
|
229 dy = -aDx; |
|
230 break; |
|
231 } |
|
232 case ERotationAngle180: |
|
233 { |
|
234 dx = -aDx; |
|
235 dy = -aDy; |
|
236 break; |
|
237 } |
|
238 case ERotationAngle270: |
|
239 { |
|
240 dx = -aDy; |
|
241 dy = aDx; |
|
242 break; |
|
243 } |
|
244 default: |
|
245 { |
|
246 // Internal state error, debug panic only |
|
247 #ifdef _DEBUG |
|
248 Panic( KErrGeneral ); |
|
249 #endif |
|
250 } |
|
251 } |
|
252 if( iHorizontalMirroring ) |
|
253 { |
|
254 dx = -dx; |
|
255 } |
|
256 if( iVerticalMirroring ) |
|
257 { |
|
258 dy = -dy; |
|
259 } |
|
260 |
|
261 if( iSourceRect.iTl.iX + dx < 0 || |
|
262 iSourceRect.iBr.iX + dx > iSourceSize.iWidth || |
|
263 iSourceRect.iTl.iY + dy < 0 || |
|
264 iSourceRect.iBr.iY + dy > iSourceSize.iHeight ) |
|
265 { |
|
266 return KErrArgument; |
|
267 } |
|
268 |
|
269 iSourceRect.Move( dx, dy ); |
|
270 |
|
271 // Start load |
|
272 return ApplySettings(); |
|
273 } |
|
274 |
|
275 // ----------------------------------------------------------------------------- |
|
276 // CIHLImageViewerExtJpg::SetSourceRectPosition |
|
277 // ----------------------------------------------------------------------------- |
|
278 TInt CIHLImageViewerExtJpg::SetSourceRectPosition( const TPoint& aPosition ) |
|
279 { |
|
280 TPoint newPosition( aPosition ); |
|
281 TSize sourceRectSize( iSourceRect.Size() ); |
|
282 switch( iRotationAngle ) |
|
283 { |
|
284 case ERotationAngle0: |
|
285 { |
|
286 break; |
|
287 } |
|
288 case ERotationAngle90: |
|
289 { |
|
290 newPosition.iX = aPosition.iY; |
|
291 newPosition.iY = iSourceSize.iHeight - sourceRectSize.iHeight - aPosition.iX; |
|
292 break; |
|
293 } |
|
294 case ERotationAngle180: |
|
295 { |
|
296 newPosition.iX = iSourceSize.iWidth - sourceRectSize.iWidth - aPosition.iX; |
|
297 newPosition.iY = iSourceSize.iHeight - sourceRectSize.iHeight - aPosition.iY; |
|
298 break; |
|
299 } |
|
300 case ERotationAngle270: |
|
301 { |
|
302 newPosition.iX = iSourceSize.iWidth - sourceRectSize.iWidth - aPosition.iY; |
|
303 newPosition.iY = aPosition.iX; |
|
304 break; |
|
305 } |
|
306 default: |
|
307 { |
|
308 // Internal state error, debug panic only |
|
309 #ifdef _DEBUG |
|
310 Panic( KErrGeneral ); |
|
311 #endif |
|
312 } |
|
313 } |
|
314 if( iHorizontalMirroring ) |
|
315 { |
|
316 newPosition.iX = iSourceSize.iWidth - sourceRectSize.iWidth - newPosition.iX; |
|
317 } |
|
318 if( iVerticalMirroring ) |
|
319 { |
|
320 newPosition.iY = iSourceSize.iHeight - sourceRectSize.iHeight - newPosition.iY; |
|
321 } |
|
322 |
|
323 if( newPosition.iX < 0 || |
|
324 newPosition.iX > ( iSourceSize.iWidth - sourceRectSize.iWidth ) || |
|
325 newPosition.iY < 0 || |
|
326 newPosition.iY > ( iSourceSize.iHeight - sourceRectSize.iHeight ) ) |
|
327 { |
|
328 return KErrArgument; |
|
329 } |
|
330 |
|
331 iSourceRect = TRect( newPosition, sourceRectSize ); |
|
332 |
|
333 // Start load |
|
334 return ApplySettings(); |
|
335 } |
|
336 |
|
337 // ----------------------------------------------------------------------------- |
|
338 // CIHLImageViewerExtJpg::SourceRect |
|
339 // ----------------------------------------------------------------------------- |
|
340 TRect CIHLImageViewerExtJpg::SourceRect() const |
|
341 { |
|
342 TRect mirroredSourceRect( iSourceRect ); |
|
343 if( iHorizontalMirroring ) |
|
344 { |
|
345 mirroredSourceRect.iTl.iX = iSourceSize.iWidth - iSourceRect.iBr.iX; |
|
346 mirroredSourceRect.iBr.iX = iSourceSize.iWidth - iSourceRect.iTl.iX; |
|
347 } |
|
348 if( iVerticalMirroring ) |
|
349 { |
|
350 mirroredSourceRect.iTl.iY = iSourceSize.iHeight - iSourceRect.iBr.iY; |
|
351 mirroredSourceRect.iBr.iY = iSourceSize.iHeight - iSourceRect.iTl.iY; |
|
352 } |
|
353 |
|
354 TRect rotatedSourceRect( mirroredSourceRect ); |
|
355 switch( iRotationAngle ) |
|
356 { |
|
357 case ERotationAngle0: |
|
358 { |
|
359 break; |
|
360 } |
|
361 case ERotationAngle90: |
|
362 { |
|
363 rotatedSourceRect.iTl.iX = iSourceSize.iHeight - mirroredSourceRect.iBr.iY; |
|
364 rotatedSourceRect.iTl.iY = mirroredSourceRect.iTl.iX; |
|
365 rotatedSourceRect.iBr.iX = iSourceSize.iHeight - mirroredSourceRect.iTl.iY; |
|
366 rotatedSourceRect.iBr.iY = mirroredSourceRect.iBr.iX; |
|
367 break; |
|
368 } |
|
369 case ERotationAngle180: |
|
370 { |
|
371 rotatedSourceRect.iTl.iX = iSourceSize.iWidth - mirroredSourceRect.iBr.iX; |
|
372 rotatedSourceRect.iTl.iY = iSourceSize.iHeight - mirroredSourceRect.iBr.iY; |
|
373 rotatedSourceRect.iBr.iX = iSourceSize.iWidth - mirroredSourceRect.iTl.iX; |
|
374 rotatedSourceRect.iBr.iY = iSourceSize.iHeight - mirroredSourceRect.iTl.iY; |
|
375 break; |
|
376 } |
|
377 case ERotationAngle270: |
|
378 { |
|
379 rotatedSourceRect.iTl.iX = mirroredSourceRect.iTl.iY; |
|
380 rotatedSourceRect.iTl.iY = iSourceSize.iWidth - mirroredSourceRect.iBr.iX; |
|
381 rotatedSourceRect.iBr.iX = mirroredSourceRect.iBr.iY; |
|
382 rotatedSourceRect.iBr.iY = iSourceSize.iWidth - mirroredSourceRect.iTl.iX; |
|
383 break; |
|
384 } |
|
385 default: |
|
386 { |
|
387 // Internal state error, debug panic only |
|
388 #ifdef _DEBUG |
|
389 Panic( KErrGeneral ); |
|
390 #endif |
|
391 } |
|
392 } |
|
393 |
|
394 return rotatedSourceRect; |
|
395 } |
|
396 |
|
397 // ----------------------------------------------------------------------------- |
|
398 // CIHLImageViewerExtJpg::SourceSize |
|
399 // ----------------------------------------------------------------------------- |
|
400 TSize CIHLImageViewerExtJpg::SourceSize() const |
|
401 { |
|
402 if( iRotationAngle == ERotationAngle90 || |
|
403 iRotationAngle == ERotationAngle270 ) |
|
404 { |
|
405 return TSize( iSourceSize.iHeight, iSourceSize.iWidth ); |
|
406 } |
|
407 else |
|
408 { |
|
409 return iSourceSize; |
|
410 } |
|
411 } |
|
412 |
|
413 // ----------------------------------------------------------------------------- |
|
414 // CIHLImageViewerExtJpg::SetZoomRatio |
|
415 // ----------------------------------------------------------------------------- |
|
416 TInt CIHLImageViewerExtJpg::SetZoomRatio( TReal aZoomRatio ) |
|
417 { |
|
418 if( aZoomRatio <= 0 ) |
|
419 { |
|
420 return KErrArgument; |
|
421 } |
|
422 |
|
423 iZoomRatio = aZoomRatio; |
|
424 |
|
425 // Recalculate source rect and destination size |
|
426 CalculateSourceRectAndDestinationSize(); |
|
427 |
|
428 // Start load |
|
429 return ApplySettings(); |
|
430 } |
|
431 |
|
432 // ----------------------------------------------------------------------------- |
|
433 // CIHLImageViewerExtJpg::ZoomRatio |
|
434 // ----------------------------------------------------------------------------- |
|
435 TReal CIHLImageViewerExtJpg::ZoomRatio() const |
|
436 { |
|
437 return iZoomRatio; |
|
438 } |
|
439 |
|
440 // ----------------------------------------------------------------------------- |
|
441 // CIHLImageViewerExtJpg::ZoomToFitRatio |
|
442 // ----------------------------------------------------------------------------- |
|
443 TReal CIHLImageViewerExtJpg::ZoomToFitRatio() const |
|
444 { |
|
445 return iZoomToFitRatio; |
|
446 } |
|
447 |
|
448 // ----------------------------------------------------------------------------- |
|
449 // CIHLImageViewerExtJpg::RotateClockwise |
|
450 // ----------------------------------------------------------------------------- |
|
451 TInt CIHLImageViewerExtJpg::RotateClockwise() |
|
452 { |
|
453 TInt rotationAngle( iRotationAngle + ERotationAngle90 ); |
|
454 if( rotationAngle > ERotationAngle270 ) |
|
455 { |
|
456 rotationAngle = ERotationAngle0; |
|
457 } |
|
458 |
|
459 return SetRotationAngle( rotationAngle ); |
|
460 } |
|
461 |
|
462 // ----------------------------------------------------------------------------- |
|
463 // CIHLImageViewerExtJpg::RotateCounterClockwise |
|
464 // ----------------------------------------------------------------------------- |
|
465 TInt CIHLImageViewerExtJpg::RotateCounterClockwise() |
|
466 { |
|
467 TInt rotationAngle( iRotationAngle - ERotationAngle90 ); |
|
468 if( rotationAngle < ERotationAngle0 ) |
|
469 { |
|
470 rotationAngle = ERotationAngle270; |
|
471 } |
|
472 |
|
473 return SetRotationAngle( rotationAngle ); |
|
474 } |
|
475 |
|
476 // ----------------------------------------------------------------------------- |
|
477 // CIHLImageViewerExtJpg::SetRotationAngle |
|
478 // ----------------------------------------------------------------------------- |
|
479 TInt CIHLImageViewerExtJpg::SetRotationAngle( TInt aRotationAngle ) |
|
480 { |
|
481 if( aRotationAngle != ERotationAngle0 && |
|
482 aRotationAngle != ERotationAngle90 && |
|
483 aRotationAngle != ERotationAngle180 && |
|
484 aRotationAngle != ERotationAngle270 ) |
|
485 { |
|
486 return KErrArgument; |
|
487 } |
|
488 |
|
489 iRotationAngle = aRotationAngle; |
|
490 |
|
491 // Recalculate source rect and destination size |
|
492 CalculateSourceRectAndDestinationSize(); |
|
493 |
|
494 // Recalculate zoom to fit ratio |
|
495 CalculateZoomToFitRatio(); |
|
496 |
|
497 // Start load |
|
498 return ApplySettings(); |
|
499 } |
|
500 |
|
501 // ----------------------------------------------------------------------------- |
|
502 // CIHLImageViewerExtJpg::RotationAngle |
|
503 // ----------------------------------------------------------------------------- |
|
504 TInt CIHLImageViewerExtJpg::RotationAngle() const |
|
505 { |
|
506 return iRotationAngle; |
|
507 } |
|
508 |
|
509 // ----------------------------------------------------------------------------- |
|
510 // CIHLImageViewerExtJpg::SetVerticalMirroring |
|
511 // ----------------------------------------------------------------------------- |
|
512 TInt CIHLImageViewerExtJpg::SetVerticalMirroring( TBool aValue ) |
|
513 { |
|
514 if( iVerticalMirroring != aValue ) |
|
515 { |
|
516 iVerticalMirroring = aValue; |
|
517 |
|
518 // Start load |
|
519 return ApplySettings(); |
|
520 } |
|
521 return KErrNone; |
|
522 } |
|
523 |
|
524 // ----------------------------------------------------------------------------- |
|
525 // CIHLImageViewerExtJpg::VerticalMirroring |
|
526 // ----------------------------------------------------------------------------- |
|
527 TBool CIHLImageViewerExtJpg::VerticalMirroring() const |
|
528 { |
|
529 return iVerticalMirroring; |
|
530 } |
|
531 |
|
532 // ----------------------------------------------------------------------------- |
|
533 // CIHLImageViewerExtJpg::SetHorizontalMirroring |
|
534 // ----------------------------------------------------------------------------- |
|
535 TInt CIHLImageViewerExtJpg::SetHorizontalMirroring( TBool aValue ) |
|
536 { |
|
537 if( iHorizontalMirroring != aValue ) |
|
538 { |
|
539 iHorizontalMirroring = aValue; |
|
540 return ApplySettings(); |
|
541 } |
|
542 return KErrNone; |
|
543 } |
|
544 |
|
545 // ----------------------------------------------------------------------------- |
|
546 // CIHLImageViewerExtJpg::HorizontalMirroring |
|
547 // ----------------------------------------------------------------------------- |
|
548 TBool CIHLImageViewerExtJpg::HorizontalMirroring() const |
|
549 { |
|
550 return iHorizontalMirroring; |
|
551 } |
|
552 |
|
553 // ----------------------------------------------------------------------------- |
|
554 // CIHLImageViewerExtJpg::SetFilter |
|
555 // ----------------------------------------------------------------------------- |
|
556 void CIHLImageViewerExtJpg::SetFilter( MIHLFilter* /*aFilter*/ ) |
|
557 { |
|
558 // Not in use |
|
559 } |
|
560 |
|
561 |
|
562 |
|
563 // Private methods |
|
564 // ----------------------------------------------------------------------------- |
|
565 // CIHLImageViewerExtJpg::DoCancel |
|
566 // ----------------------------------------------------------------------------- |
|
567 void CIHLImageViewerExtJpg::DoCancel() |
|
568 { |
|
569 CTimer::DoCancel(); |
|
570 // Set state to inactive |
|
571 switch( iViewerState ) |
|
572 { |
|
573 case ELoad: |
|
574 { |
|
575 // Cancel asynchronous source loading |
|
576 iSource.CancelLoad(); |
|
577 iCacheSource->Reset(); |
|
578 break; |
|
579 } |
|
580 case EProcess: |
|
581 { |
|
582 // Cancel asynchronous processing |
|
583 iProcessor->CancelProcess(); |
|
584 iCacheDestination->Reset(); |
|
585 break; |
|
586 } |
|
587 default: |
|
588 { |
|
589 break; |
|
590 } |
|
591 } |
|
592 } |
|
593 |
|
594 // ----------------------------------------------------------------------------- |
|
595 // CIHLImageViewerExtJpg::RunL |
|
596 // ----------------------------------------------------------------------------- |
|
597 void CIHLImageViewerExtJpg::RunL() |
|
598 { |
|
599 User::LeaveIfError( iStatus.Int() ); |
|
600 |
|
601 // Save previous state and set current state immediately |
|
602 // to inactive to keep state up-to-date |
|
603 TViewerState prevState( iViewerState ); |
|
604 iViewerState = EInactive; |
|
605 |
|
606 switch( prevState ) |
|
607 { |
|
608 case ELoad: |
|
609 { |
|
610 //Use the internal processor if the codec is lacking some processing capability |
|
611 if( iInternalProcessingNeeded ) |
|
612 { |
|
613 const CFbsBitmap& srcBitmap = iCacheSource->Bitmap(); |
|
614 User::LeaveIfError( iCacheDestination->Create( iDestinationSize, srcBitmap.DisplayMode() ) ); |
|
615 TRect processSourceRect( CalculateProcessSourceRect( iCacheSource->Bitmap().SizeInPixels() ) ); |
|
616 TRect destinationRect( CalculateProcessDestinationRect() ); |
|
617 |
|
618 User::LeaveIfError( iProcessor->Process( iStatus, *iCacheSource, processSourceRect, |
|
619 *iCacheDestination, destinationRect ) ); |
|
620 |
|
621 iViewerState = EProcess; |
|
622 SetActive(); |
|
623 } |
|
624 else |
|
625 { |
|
626 User::LeaveIfError( Finish() ); |
|
627 iObserver.ViewerBitmapChangedL(); |
|
628 } |
|
629 break; |
|
630 } |
|
631 case EProcess: |
|
632 { |
|
633 User::LeaveIfError( Finish() ); |
|
634 iObserver.ViewerBitmapChangedL(); |
|
635 break; |
|
636 } |
|
637 default: |
|
638 { |
|
639 // Internal state error, debug panic only |
|
640 #ifdef _DEBUG |
|
641 Panic( KErrGeneral ); |
|
642 #endif |
|
643 } |
|
644 } |
|
645 } |
|
646 |
|
647 // ----------------------------------------------------------------------------- |
|
648 // CIHLImageViewerExtJpg::RunError |
|
649 // ----------------------------------------------------------------------------- |
|
650 TInt CIHLImageViewerExtJpg::RunError( TInt aError ) |
|
651 { |
|
652 switch( iViewerState ) |
|
653 { |
|
654 case ELoad: |
|
655 { |
|
656 // Cleanup cached source if load has been failed |
|
657 iCacheSource->Reset(); |
|
658 break; |
|
659 } |
|
660 case EProcess: |
|
661 { |
|
662 // Cleanup cached destination if process has been failed |
|
663 iCacheDestination->Reset(); |
|
664 break; |
|
665 } |
|
666 default: |
|
667 { |
|
668 break; |
|
669 } |
|
670 } |
|
671 |
|
672 iViewerState = EInactive; |
|
673 iObserver.ViewerError( aError ); |
|
674 return KErrNone; |
|
675 } |
|
676 |
|
677 // ----------------------------------------------------------------------------- |
|
678 // CIHLImageViewerExtJpg::ApplySettings |
|
679 // ----------------------------------------------------------------------------- |
|
680 TInt CIHLImageViewerExtJpg::ApplySettings() |
|
681 { |
|
682 // Assert source rect and destination, debug build only |
|
683 #ifdef _DEBUG |
|
684 AssertSourceRectAndDestinationSize(); |
|
685 #endif |
|
686 |
|
687 // Cancel current process if any |
|
688 Cancel(); |
|
689 |
|
690 // Perform processing if supported by codec |
|
691 if( !iInternalProcessingNeeded ) |
|
692 { |
|
693 TRAPD( err, iSource.SetRotationL( iRotationAngle ) ); |
|
694 if( !err && iHorizontalMirroring ) |
|
695 { |
|
696 TRAP( err, iSource.SetFlippingL() ); |
|
697 } |
|
698 if( !err && iVerticalMirroring ) |
|
699 { |
|
700 TRAP( err, iSource.SetMirroringL() ); |
|
701 } |
|
702 if( err ) |
|
703 { |
|
704 return err; |
|
705 } |
|
706 } |
|
707 |
|
708 // Start async load/process. |
|
709 TInt err( KErrNone ); |
|
710 |
|
711 err = AsyncLoad(); |
|
712 if( !err ) |
|
713 { |
|
714 iViewerState = ELoad; |
|
715 SetActive(); |
|
716 } |
|
717 |
|
718 return err; |
|
719 } |
|
720 |
|
721 // ----------------------------------------------------------------------------- |
|
722 // CIHLImageViewerExtJpg::AsyncLoad |
|
723 // ----------------------------------------------------------------------------- |
|
724 TInt CIHLImageViewerExtJpg::AsyncLoad() |
|
725 { |
|
726 // Internal state check, debug panic only |
|
727 __ASSERT_DEBUG( !iCacheDestination->Bitmap().Handle(), Panic( KErrGeneral ) ); |
|
728 |
|
729 TInt err( KErrNone ); |
|
730 |
|
731 // Load source bitmap |
|
732 |
|
733 iCacheSource->Reset(); |
|
734 |
|
735 err = iCacheSource->Create( iDestinationSize, iSource.DisplayMode() ); |
|
736 |
|
737 if( !err ) |
|
738 { |
|
739 err = iSource.Load( iSourceRect, iStatus, *iCacheSource ); |
|
740 } |
|
741 |
|
742 // Error cleanup if needed |
|
743 if( err ) |
|
744 { |
|
745 iCacheSource->Reset(); |
|
746 } |
|
747 return err; |
|
748 } |
|
749 |
|
750 |
|
751 |
|
752 // ----------------------------------------------------------------------------- |
|
753 // CIHLImageViewerExtJpg::Finish |
|
754 // ----------------------------------------------------------------------------- |
|
755 TInt CIHLImageViewerExtJpg::Finish() |
|
756 { |
|
757 // Internal state check, debug panic only |
|
758 __ASSERT_DEBUG( iCacheSource->Bitmap().Handle(), Panic( KErrGeneral ) ); |
|
759 |
|
760 TInt err( KErrNone ); |
|
761 |
|
762 // Check if internal processor was used |
|
763 if( iInternalProcessingNeeded ) |
|
764 { |
|
765 err = iDestination.Copy( *iCacheDestination, ETrue ); |
|
766 iCacheDestination->Reset(); |
|
767 } |
|
768 else |
|
769 { |
|
770 err = iDestination.Copy( *iCacheSource, ETrue ); |
|
771 iCacheSource->Reset(); |
|
772 } |
|
773 |
|
774 // Error cleanup if needed |
|
775 if( err ) |
|
776 { |
|
777 iDestination.Reset(); |
|
778 } |
|
779 |
|
780 return err; |
|
781 } |
|
782 |
|
783 |
|
784 // ----------------------------------------------------------------------------- |
|
785 // CIHLImageViewerExtJpg::SelfComplete |
|
786 // ----------------------------------------------------------------------------- |
|
787 void CIHLImageViewerExtJpg::SelfComplete() |
|
788 { |
|
789 SetActive(); |
|
790 iStatus = KRequestPending; |
|
791 TRequestStatus* status = &iStatus; |
|
792 User::RequestComplete( status, KErrNone ); |
|
793 } |
|
794 |
|
795 // ----------------------------------------------------------------------------- |
|
796 // CIHLImageViewerExtJpg::CalculateProcessSourceRect |
|
797 // ----------------------------------------------------------------------------- |
|
798 TRect CIHLImageViewerExtJpg::CalculateProcessSourceRect( const TSize& aSourceCacheSize ) |
|
799 { |
|
800 |
|
801 TRect loadRect( aSourceCacheSize ); |
|
802 |
|
803 switch( iRotationAngle ) |
|
804 { |
|
805 case ERotationAngle0: |
|
806 { |
|
807 break; |
|
808 } |
|
809 case ERotationAngle90: |
|
810 { |
|
811 TInt tmp( loadRect.iTl.iY ); |
|
812 loadRect.iTl.iY = loadRect.iBr.iY; |
|
813 loadRect.iBr.iY = tmp; |
|
814 break; |
|
815 } |
|
816 case ERotationAngle180: |
|
817 { |
|
818 TPoint tmp( loadRect.iTl ); |
|
819 loadRect.iTl = loadRect.iBr; |
|
820 loadRect.iBr = tmp; |
|
821 break; |
|
822 } |
|
823 case ERotationAngle270: |
|
824 { |
|
825 TInt tmp( loadRect.iTl.iX ); |
|
826 loadRect.iTl.iX = loadRect.iBr.iX; |
|
827 loadRect.iBr.iX = tmp; |
|
828 break; |
|
829 } |
|
830 default: |
|
831 { |
|
832 // Internal state error, debug panic only |
|
833 #ifdef _DEBUG |
|
834 Panic( KErrGeneral ); |
|
835 #endif |
|
836 } |
|
837 } |
|
838 |
|
839 return loadRect; |
|
840 } |
|
841 |
|
842 // ----------------------------------------------------------------------------- |
|
843 // CIHLImageViewerExtJpg::CalculateProcessDestinationRect |
|
844 // ----------------------------------------------------------------------------- |
|
845 TRect CIHLImageViewerExtJpg::CalculateProcessDestinationRect() |
|
846 { |
|
847 TRect dstRect( iDestinationSize ); |
|
848 switch( iRotationAngle ) |
|
849 { |
|
850 case ERotationAngle0: |
|
851 case ERotationAngle180: |
|
852 { |
|
853 if( iHorizontalMirroring ) |
|
854 { |
|
855 TInt tmp( dstRect.iTl.iX ); |
|
856 dstRect.iTl.iX = dstRect.iBr.iX; |
|
857 dstRect.iBr.iX = tmp; |
|
858 } |
|
859 if( iVerticalMirroring ) |
|
860 { |
|
861 TInt tmp( dstRect.iTl.iY ); |
|
862 dstRect.iTl.iY = dstRect.iBr.iY; |
|
863 dstRect.iBr.iY = tmp; |
|
864 } |
|
865 break; |
|
866 } |
|
867 case ERotationAngle90: |
|
868 case ERotationAngle270: |
|
869 { |
|
870 if( iHorizontalMirroring ) |
|
871 { |
|
872 TInt tmp( dstRect.iTl.iY ); |
|
873 dstRect.iTl.iY = dstRect.iBr.iY; |
|
874 dstRect.iBr.iY = tmp; |
|
875 } |
|
876 if( iVerticalMirroring ) |
|
877 { |
|
878 TInt tmp( dstRect.iTl.iX ); |
|
879 dstRect.iTl.iX = dstRect.iBr.iX; |
|
880 dstRect.iBr.iX = tmp; |
|
881 } |
|
882 break; |
|
883 } |
|
884 default: |
|
885 { |
|
886 // Internal state error, debug panic only |
|
887 #ifdef _DEBUG |
|
888 Panic( KErrGeneral ); |
|
889 #endif |
|
890 } |
|
891 } |
|
892 return dstRect; |
|
893 } |
|
894 |
|
895 // ----------------------------------------------------------------------------- |
|
896 // CIHLImageViewerExtJpg::CalculateZoomToFitRatio |
|
897 // ----------------------------------------------------------------------------- |
|
898 void CIHLImageViewerExtJpg::CalculateZoomToFitRatio() |
|
899 { |
|
900 TSize sourceSize( SourceSize() ); |
|
901 TReal widthRatio( TReal( iViewerSize.iWidth ) / TReal( sourceSize.iWidth ) ); |
|
902 TReal heightRatio( TReal( iViewerSize.iHeight ) / TReal( sourceSize.iHeight ) ); |
|
903 |
|
904 if( iOptions & MIHLImageViewer::EOptionIgnoreAspectRatio ) |
|
905 { |
|
906 iZoomToFitRatio = ( widthRatio > heightRatio ) ? widthRatio : heightRatio; |
|
907 } |
|
908 else |
|
909 { |
|
910 iZoomToFitRatio = ( widthRatio < heightRatio ) ? widthRatio : heightRatio; |
|
911 } |
|
912 } |
|
913 |
|
914 // ----------------------------------------------------------------------------- |
|
915 // CIHLImageViewerExtJpg::CalculateSourceRectAndDestinationSize |
|
916 // ----------------------------------------------------------------------------- |
|
917 void CIHLImageViewerExtJpg::CalculateSourceRectAndDestinationSize() |
|
918 { |
|
919 // Calculate new source rect |
|
920 TSize oldSourceRectSize( iSourceRect.Size() ); |
|
921 |
|
922 TReal newSourceRectWidth; |
|
923 TReal newSourceRectHeight; |
|
924 TReal widthZoomRatio( iZoomRatio ); |
|
925 TReal heightZoomRatio( iZoomRatio ); |
|
926 |
|
927 if( iOptions & MIHLImageViewer::EOptionIgnoreAspectRatio ) |
|
928 { |
|
929 TReal widthRatio( TReal( iViewerSize.iWidth ) / TReal( iSourceSize.iWidth ) ); |
|
930 TReal heightRatio( TReal( iViewerSize.iHeight ) / TReal( iSourceSize.iHeight ) ); |
|
931 if( widthRatio < heightRatio ) |
|
932 { |
|
933 widthZoomRatio = widthZoomRatio * widthRatio / heightRatio; |
|
934 } |
|
935 else |
|
936 { |
|
937 heightZoomRatio = heightZoomRatio * heightRatio / widthRatio; |
|
938 } |
|
939 } |
|
940 |
|
941 if( iRotationAngle == ERotationAngle90 || |
|
942 iRotationAngle == ERotationAngle270 ) |
|
943 { |
|
944 newSourceRectWidth = iSrcBitmapScaleFactor * iViewerSize.iHeight / heightZoomRatio; //widthZoomRatio |
|
945 newSourceRectHeight = iSrcBitmapScaleFactor * iViewerSize.iWidth / widthZoomRatio; //heightZoomRatio |
|
946 } |
|
947 else |
|
948 { |
|
949 newSourceRectWidth = iSrcBitmapScaleFactor * iViewerSize.iWidth / widthZoomRatio; |
|
950 newSourceRectHeight = iSrcBitmapScaleFactor * iViewerSize.iHeight / heightZoomRatio; |
|
951 } |
|
952 |
|
953 // Check if source rect is not larger than source area |
|
954 if( newSourceRectWidth > iSourceSize.iWidth ) |
|
955 { |
|
956 newSourceRectWidth = iSourceSize.iWidth; |
|
957 } |
|
958 if( newSourceRectHeight > iSourceSize.iHeight ) |
|
959 { |
|
960 newSourceRectHeight = iSourceSize.iHeight; |
|
961 } |
|
962 iSourceRect.SetWidth( (TInt)newSourceRectWidth ); |
|
963 iSourceRect.SetHeight( (TInt)newSourceRectHeight ); |
|
964 |
|
965 // Calculate actual destination size (always same or smaller than iViewerSize !) |
|
966 if( iRotationAngle == ERotationAngle90 || |
|
967 iRotationAngle == ERotationAngle270 ) |
|
968 { |
|
969 iDestinationSize.iWidth = (TInt)( newSourceRectHeight * widthZoomRatio ); //heightZoomRatio |
|
970 iDestinationSize.iHeight = (TInt)( newSourceRectWidth * heightZoomRatio ); //widthZoomRatio |
|
971 } |
|
972 else |
|
973 { |
|
974 iDestinationSize.iWidth = (TInt)( newSourceRectWidth * widthZoomRatio ); |
|
975 iDestinationSize.iHeight = (TInt)( newSourceRectHeight * heightZoomRatio ); |
|
976 } |
|
977 // Check that destination size is not rounded to zero |
|
978 if( iDestinationSize.iWidth == 0 ) |
|
979 { |
|
980 iDestinationSize.iWidth = 1; |
|
981 } |
|
982 if( iDestinationSize.iHeight == 0 ) |
|
983 { |
|
984 iDestinationSize.iHeight = 1; |
|
985 } |
|
986 |
|
987 // Move source rect keeping center point in same location |
|
988 iSourceRect.Move( ( oldSourceRectSize.iWidth - (TInt)newSourceRectWidth ) / 2, |
|
989 ( oldSourceRectSize.iHeight - (TInt)newSourceRectHeight ) / 2 ); |
|
990 |
|
991 // Move rect if partially out of source area |
|
992 TPoint moveOffset( 0, 0 ); |
|
993 if( iSourceRect.iTl.iX < 0 ) |
|
994 { |
|
995 moveOffset.iX = -iSourceRect.iTl.iX; |
|
996 } |
|
997 else if( iSourceRect.iBr.iX > iSourceSize.iWidth ) |
|
998 { |
|
999 moveOffset.iX = iSourceSize.iWidth - iSourceRect.iBr.iX; |
|
1000 } |
|
1001 if( iSourceRect.iTl.iY < 0 ) //lint !e961 |
|
1002 { |
|
1003 moveOffset.iY = -iSourceRect.iTl.iY; |
|
1004 } |
|
1005 else if( iSourceRect.iBr.iY > iSourceSize.iHeight ) |
|
1006 { |
|
1007 moveOffset.iY = iSourceSize.iHeight - iSourceRect.iBr.iY; |
|
1008 } |
|
1009 iSourceRect.Move( moveOffset ); //lint !e961 |
|
1010 |
|
1011 // Assert that rectangle is valid, debug build only |
|
1012 #ifdef _DEBUG |
|
1013 AssertSourceRectAndDestinationSize(); |
|
1014 #endif |
|
1015 } |
|
1016 |
|
1017 // ----------------------------------------------------------------------------- |
|
1018 // CIHLImageViewerExtJpg::AssertSourceRectAndDestinationSize |
|
1019 // Used in debug build only |
|
1020 // ----------------------------------------------------------------------------- |
|
1021 #ifdef _DEBUG |
|
1022 void CIHLImageViewerExtJpg::AssertSourceRectAndDestinationSize() |
|
1023 { |
|
1024 if( iSourceRect.iTl.iX < 0 || |
|
1025 iSourceRect.iBr.iX > iSourceSize.iWidth || |
|
1026 iSourceRect.iTl.iY < 0 || |
|
1027 iSourceRect.iBr.iY > iSourceSize.iHeight || |
|
1028 iDestinationSize.iWidth <= 0 || iDestinationSize.iHeight <= 0 ) |
|
1029 { |
|
1030 Panic( KErrGeneral ); |
|
1031 } |
|
1032 } |
|
1033 #endif |
|
1034 |
|
1035 // End of File |
|
1036 |
|
1037 |