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38 * \class HbVgEffect |
38 * \class HbVgEffect |
39 * |
39 * |
40 * \brief Abstract base class for OpenVG effects. |
40 * \brief Abstract base class for OpenVG effects. |
41 * |
41 * |
42 * \internal |
42 * \internal |
43 * |
43 * |
44 * Brief guide for creating new effects: |
44 * Brief guide for creating new effects: |
45 * <ul> |
45 * <ul> |
46 * |
46 * |
47 * <li>Derive from HbVgEffect. |
47 * <li>Derive from HbVgEffect. |
48 * |
48 * |
120 * the underlying VGImage handle. Typically used with dstPixmap and |
120 * the underlying VGImage handle. Typically used with dstPixmap and |
121 * tmpPixmap. |
121 * tmpPixmap. |
122 * |
122 * |
123 * \internal |
123 * \internal |
124 */ |
124 */ |
125 VGImage HbVgEffectPrivate::ensurePixmap(QPixmap *pixmap, const QSize& size) |
125 VGImage HbVgEffectPrivate::ensurePixmap(QPixmap *pixmap, const QSize &size) |
126 { |
126 { |
127 if (pixmap->size() != size) |
127 if (pixmap->size() != size) { |
128 *pixmap = QPixmap(size); |
128 *pixmap = QPixmap(size); |
|
129 } |
129 return qPixmapToVGImage(*pixmap); |
130 return qPixmapToVGImage(*pixmap); |
130 } |
131 } |
131 #endif |
132 #endif |
132 |
133 |
133 /*! |
134 /*! |
163 const QGraphicsItem *srcItem = q->sourceItemForRoot(); |
164 const QGraphicsItem *srcItem = q->sourceItemForRoot(); |
164 if (srcItem) { |
165 if (srcItem) { |
165 QGraphicsScene *scene = srcItem->scene(); |
166 QGraphicsScene *scene = srcItem->scene(); |
166 if (scene) { |
167 if (scene) { |
167 QList<QGraphicsView *> views = scene->views(); |
168 QList<QGraphicsView *> views = scene->views(); |
168 foreach (QGraphicsView *view, views) { |
169 foreach(QGraphicsView * view, views) { |
169 mainWindow = qobject_cast<HbMainWindow *>(view); |
170 mainWindow = qobject_cast<HbMainWindow *>(view); |
170 if (mainWindow) |
171 if (mainWindow) { |
171 break; |
172 break; |
|
173 } |
172 } |
174 } |
173 } |
175 } |
174 } |
176 } |
175 } |
177 } |
176 return mainWindow ? HbMainWindowPrivate::d_ptr(mainWindow)->rotation() : 0; |
178 return mainWindow ? HbMainWindowPrivate::d_ptr(mainWindow)->rotation() : 0; |
188 lastRotationTransformAngle = rotation; |
190 lastRotationTransformAngle = rotation; |
189 lastRotationTransform = QTransform().rotate(rotation); |
191 lastRotationTransform = QTransform().rotate(rotation); |
190 } |
192 } |
191 return lastRotationTransform; |
193 return lastRotationTransform; |
192 } |
194 } |
193 |
195 |
194 /*! |
196 /*! |
195 * Maps the given translation offset to an offset that is based on the current |
197 * Maps the given translation offset to an offset that is based on the current |
196 * rotation of the graphics view. Effects are drawing directly, in device |
198 * rotation of the graphics view. Effects are drawing directly, in device |
197 * coordinates, however they must take into account the rotation of the graphics |
199 * coordinates, however they must take into account the rotation of the graphics |
198 * view too. Therefore any translation they use must be mapped using this |
200 * view too. Therefore any translation they use must be mapped using this |
347 * \sa opacity() |
349 * \sa opacity() |
348 */ |
350 */ |
349 void HbVgEffect::setOpacity(qreal opacity) |
351 void HbVgEffect::setOpacity(qreal opacity) |
350 { |
352 { |
351 Q_D(HbVgEffect); |
353 Q_D(HbVgEffect); |
352 if (d->opacity == opacity) |
354 if (d->opacity == opacity) { |
353 return; |
355 return; |
|
356 } |
354 d->opacity = opacity; |
357 d->opacity = opacity; |
355 updateEffect(); |
358 updateEffect(); |
356 emit opacityChanged(opacity); |
359 emit opacityChanged(opacity); |
357 } |
360 } |
358 |
361 |
365 */ |
368 */ |
366 void HbVgEffect::draw(QPainter *painter) |
369 void HbVgEffect::draw(QPainter *painter) |
367 { |
370 { |
368 // Just draw the source without effects if the painter's paint engine |
371 // Just draw the source without effects if the painter's paint engine |
369 // is not using OpenVG. |
372 // is not using OpenVG. |
370 if (painter->paintEngine()->type() != QPaintEngine::OpenVG) { |
373 QPaintEngine *paintEngine = painter->paintEngine(); |
|
374 if (!paintEngine || paintEngine->type() != QPaintEngine::OpenVG) { |
371 drawSource(painter); |
375 drawSource(painter); |
372 return; |
376 return; |
373 } |
377 } |
374 |
378 |
375 #ifdef HB_EFFECTS_OPENVG |
379 #ifdef HB_EFFECTS_OPENVG |
460 * \sa caching() |
464 * \sa caching() |
461 */ |
465 */ |
462 void HbVgEffect::setCaching(bool caching) |
466 void HbVgEffect::setCaching(bool caching) |
463 { |
467 { |
464 Q_D(HbVgEffect); |
468 Q_D(HbVgEffect); |
465 if (d->caching == caching) |
469 if (d->caching == caching) { |
466 return; |
470 return; |
|
471 } |
467 d->caching = caching; |
472 d->caching = caching; |
468 emit cachingChanged(caching); |
473 emit cachingChanged(caching); |
469 } |
474 } |
470 |
475 |
471 /*! |
476 /*! |
490 // too. The size check is important because the effects will |
495 // too. The size check is important because the effects will |
491 // typically render their source using device coordinates which |
496 // typically render their source using device coordinates which |
492 // causes a clipping to the device viewport, therefore the cached |
497 // causes a clipping to the device viewport, therefore the cached |
493 // pixmap for an item that was/is clipped should not be used. |
498 // pixmap for an item that was/is clipped should not be used. |
494 if (QPixmapCache::find(key, &cachedPm) |
499 if (QPixmapCache::find(key, &cachedPm) |
495 && (size.isNull() || cachedPm.size() == size)) |
500 && (size.isNull() || cachedPm.size() == size)) { |
496 { |
|
497 #ifdef HBVG_TRACES |
501 #ifdef HBVG_TRACES |
498 qDebug("HbVgEffect [%x]: cache hit", (int) this); |
502 qDebug("HbVgEffect [%x]: cache hit", (int) this); |
499 #endif |
503 #endif |
500 return cachedPm; |
504 return cachedPm; |
501 } |
505 } |
532 * (not related to effects) are left intact in the global pixmap cache. |
536 * (not related to effects) are left intact in the global pixmap cache. |
533 */ |
537 */ |
534 void HbVgEffect::releaseCachedResources() |
538 void HbVgEffect::releaseCachedResources() |
535 { |
539 { |
536 QSet<QString> *keys = cacheKeys(); |
540 QSet<QString> *keys = cacheKeys(); |
537 foreach (const QString &key, *keys) { |
541 foreach(const QString & key, *keys) { |
538 QPixmapCache::remove(key); |
542 QPixmapCache::remove(key); |
539 } |
543 } |
540 keys->clear(); |
544 keys->clear(); |
541 } |
545 } |
542 |
546 |