示例#1
0
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
0
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()));
}
示例#3
0
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();
        tileRect.scale(filter->filterResolution().width(), filter->filterResolution().height());
    }

    OwnPtr<ImageBuffer> tileImage;
    if (!SVGRenderingContext::createImageBufferForPattern(tileRect, tileRect, tileImage, ColorSpaceDeviceRGB, filter()->renderingMode()))
        return;

    GraphicsContext* tileImageContext = tileImage->context();
    tileImageContext->translate(-inMaxEffectLocation.x(), -inMaxEffectLocation.y());
    tileImageContext->drawImageBuffer(in->asImageBuffer(), ColorSpaceDeviceRGB, 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()));
}