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396 * |
396 * |
397 * Note that the source pixmap is not requested and the painter's |
397 * Note that the source pixmap is not requested and the painter's |
398 * world transform is not reset before calling this, in contrast to |
398 * world transform is not reset before calling this, in contrast to |
399 * performEffect(). (this means that neither d->srcPixmap nor |
399 * performEffect(). (this means that neither d->srcPixmap nor |
400 * d->worldTransform is available). |
400 * d->worldTransform is available). |
401 */ |
401 * |
402 void HbVgEffect::performEffectSw(QPainter *painter) |
402 * If the effect is able to render itself into a pixmap then it should do so |
403 { |
403 * when \a result and \a resultPos are not 0. In this case the effect should not |
404 drawSource(painter); |
404 * paint anything onto \a devicePainter but all its output should go into a |
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405 * newly created pixmap starting at position (0, 0). This pixmap is then |
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406 * returned to the caller in \a result. The offset that will be needed when |
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407 * painting the pixmap onto the devicePainter is passed back in \a resultPos. |
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408 */ |
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409 void HbVgEffect::performEffectSw(QPainter *devicePainter, QPixmap *result, QPointF *resultPos) |
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410 { |
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411 Q_UNUSED(result); |
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412 Q_UNUSED(resultPos); |
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413 drawSource(devicePainter); |
405 } |
414 } |
406 |
415 |
407 /*! |
416 /*! |
408 * \reimp |
417 * \reimp |
409 * |
418 * |
426 // is not using OpenVG. |
435 // is not using OpenVG. |
427 QPaintEngine *paintEngine = painter->paintEngine(); |
436 QPaintEngine *paintEngine = painter->paintEngine(); |
428 if (d->forceSwMode || !paintEngine || paintEngine->type() != QPaintEngine::OpenVG) { |
437 if (d->forceSwMode || !paintEngine || paintEngine->type() != QPaintEngine::OpenVG) { |
429 // No sourcePixmap() and world transform change here because |
438 // No sourcePixmap() and world transform change here because |
430 // in most cases we will just call drawSource(). |
439 // in most cases we will just call drawSource(). |
431 performEffectSw(painter); |
440 performEffectSw(painter, 0, 0); |
432 d->paramsChanged = d->cacheInvalidated = false; |
441 d->paramsChanged = d->cacheInvalidated = false; |
433 return; |
442 return; |
434 } |
443 } |
435 |
444 |
436 #ifdef HB_EFFECTS_OPENVG |
445 #ifdef HB_EFFECTS_OPENVG |
618 Q_D(const HbVgEffect); |
627 Q_D(const HbVgEffect); |
619 return d->rootEffect ? d->rootEffect->sourceBoundingRect() : sourceBoundingRect(); |
628 return d->rootEffect ? d->rootEffect->sourceBoundingRect() : sourceBoundingRect(); |
620 } |
629 } |
621 |
630 |
622 /*! |
631 /*! |
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632 * Calls sourcePixmap() for this effect, or, in case of chained effects, for the |
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633 * root of the chain. |
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634 */ |
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635 QPixmap HbVgEffect::sourcePixmapForRoot(Qt::CoordinateSystem system, QPoint *offset) |
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636 { |
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637 Q_D(HbVgEffect); |
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638 return d->rootEffect |
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639 ? d->rootEffect->sourcePixmapForRoot(system, offset) |
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640 : sourcePixmap(system, offset); |
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641 } |
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642 |
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643 /*! |
623 * Installs the effect on a given graphics item. This is merely a wrapper to |
644 * Installs the effect on a given graphics item. This is merely a wrapper to |
624 * QGraphicsItem::setGraphicsEffect(). To uninstall the effect use |
645 * QGraphicsItem::setGraphicsEffect(). To uninstall the effect use |
625 * setGraphicsEffect in the usual way (i.e. pass null). This function will do |
646 * setGraphicsEffect in the usual way (i.e. pass null). This function will do |
626 * nothing if \a item is null. |
647 * nothing if \a item is null. |
627 * |
648 * |
635 Q_D(HbVgEffect); |
656 Q_D(HbVgEffect); |
636 d->sourceGraphicsItem = item; |
657 d->sourceGraphicsItem = item; |
637 item->setGraphicsEffect(this); |
658 item->setGraphicsEffect(this); |
638 } |
659 } |
639 } |
660 } |
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661 |
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662 /*! |
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663 * A sw-based mask effect should return ChainBehavAsSource. Anything else should |
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664 * stick to the default ChainBehavNormal. There can only be 0 or 1 effect with |
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665 * ChainBehavAsSource in a chain. |
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666 */ |
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667 HbVgEffect::ChainBehavior HbVgEffect::chainBehavior() const |
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668 { |
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669 return ChainBehavNormal; |
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670 } |