本文整理汇总了C++中Filter::absoluteFilterRegion方法的典型用法代码示例。如果您正苦于以下问题：C++ Filter::absoluteFilterRegion方法的具体用法？C++ Filter::absoluteFilterRegion怎么用？C++ Filter::absoluteFilterRegion使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Filter的用法示例。
在下文中一共展示了Filter::absoluteFilterRegion方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: determineFilterPrimitiveSubregion
FloatRect FilterEffect::determineFilterPrimitiveSubregion(DetermineSubregionFlags flags)
{
Filter* filter = this->filter();
ASSERT(filter);
// FETile, FETurbulence, FEFlood don't have input effects, take the filter region as unite rect.
FloatRect subregion;
if (unsigned numberOfInputEffects = inputEffects().size()) {
subregion = inputEffect(0)->determineFilterPrimitiveSubregion(flags);
for (unsigned i = 1; i < numberOfInputEffects; ++i)
subregion.unite(inputEffect(i)->determineFilterPrimitiveSubregion(flags));
} else {
subregion = filter->filterRegion();
}
// After calling determineFilterPrimitiveSubregion on the target effect, reset the subregion again for <feTile>.
if (filterEffectType() == FilterEffectTypeTile)
subregion = filter->filterRegion();
if (flags & MapRectForward) {
// mapRect works on absolute rectangles.
subregion = filter->mapAbsoluteRectToLocalRect(mapRect(
filter->mapLocalRectToAbsoluteRect(subregion)));
}
FloatRect boundaries = effectBoundaries();
if (hasX())
subregion.setX(boundaries.x());
if (hasY())
subregion.setY(boundaries.y());
if (hasWidth())
subregion.setWidth(boundaries.width());
if (hasHeight())
subregion.setHeight(boundaries.height());
setFilterPrimitiveSubregion(subregion);
FloatRect absoluteSubregion = filter->mapLocalRectToAbsoluteRect(subregion);
// Clip every filter effect to the filter region.
if (flags & ClipToFilterRegion) {
absoluteSubregion.intersect(filter->absoluteFilterRegion());
}
setMaxEffectRect(absoluteSubregion);
return subregion;
}示例2: applySoftware
void FETile::applySoftware()
{
FilterEffect* in = inputEffect(0);
ImageBuffer* resultImage = createImageBufferResult();
if (!resultImage)
return;
setIsAlphaImage(in->isAlphaImage());
// Source input needs more attention. It has the size of the filterRegion but gives the
// size of the cutted sourceImage back. This is part of the specification and optimization.
FloatRect tileRect = in->maxEffectRect();
FloatPoint inMaxEffectLocation = tileRect.location();
FloatPoint maxEffectLocation = maxEffectRect().location();
if (in->filterEffectType() == FilterEffectTypeSourceInput) {
Filter* filter = this->filter();
tileRect = filter->absoluteFilterRegion();
}
OwnPtr<ImageBufferSurface> surface;
IntSize intTileSize = roundedIntSize(tileRect.size());
surface = adoptPtr(new UnacceleratedImageBufferSurface(intTileSize));
OwnPtr<ImageBuffer> tileImage = ImageBuffer::create(surface.release());
if (!tileImage)
return;
GraphicsContext* tileImageContext = tileImage->context();
tileImageContext->scale(FloatSize(intTileSize.width() / tileRect.width(), intTileSize.height() / tileRect.height()));
tileImageContext->translate(-inMaxEffectLocation.x(), -inMaxEffectLocation.y());
tileImageContext->drawImageBuffer(in->asImageBuffer(), in->absolutePaintRect().location());
RefPtr<Pattern> pattern = Pattern::create(tileImage->copyImage(CopyBackingStore), true, true);
AffineTransform patternTransform;
patternTransform.translate(inMaxEffectLocation.x() - maxEffectLocation.x(), inMaxEffectLocation.y() - maxEffectLocation.y());
pattern->setPatternSpaceTransform(patternTransform);
GraphicsContext* filterContext = resultImage->context();
filterContext->setFillPattern(pattern);
filterContext->fillRect(FloatRect(FloatPoint(), absolutePaintRect().size()));
}