PassRefPtr<Image> ImageBuffer::copyImage(BackingStoreCopy copyBehavior) const
{
RetainPtr<CGImageRef> image;
if (m_resolutionScale == 1)
image = copyNativeImage(copyBehavior);
else {
image.adoptCF(copyNativeImage(DontCopyBackingStore));
RetainPtr<CGContextRef> context(AdoptCF, CGBitmapContextCreate(0, logicalSize().width(), logicalSize().height(), 8, 4 * logicalSize().width(), deviceRGBColorSpaceRef(), kCGImageAlphaPremultipliedLast));
CGContextSetBlendMode(context.get(), kCGBlendModeCopy);
CGContextDrawImage(context.get(), CGRectMake(0, 0, logicalSize().width(), logicalSize().height()), image.get());
image = CGBitmapContextCreateImage(context.get());
}
if (!image)
return 0;
return BitmapImage::create(image.get());
}
void FilterEffectRenderer::allocateBackingStoreIfNeeded()
{
// At this point the effect chain has been built, and the
// source image sizes set. We just need to attach the graphic
// buffer if we have not yet done so.
if (!m_graphicsBufferAttached) {
IntSize logicalSize(m_sourceDrawingRegion.width(), m_sourceDrawingRegion.height());
if (!sourceImage() || sourceImage()->logicalSize() != logicalSize)
setSourceImage(ImageBuffer::create(logicalSize, 1, ColorSpaceDeviceRGB, renderingMode()));
m_graphicsBufferAttached = true;
}
}
RefPtr<Image> ImageBuffer::copyImage(BackingStoreCopy copyBehavior, ScaleBehavior scaleBehavior) const
{
RetainPtr<CGImageRef> image;
if (m_resolutionScale == 1 || scaleBehavior == Unscaled) {
image = copyNativeImage(copyBehavior);
image = createCroppedImageIfNecessary(image.get(), internalSize());
} else {
image = copyNativeImage(DontCopyBackingStore);
RetainPtr<CGContextRef> context = adoptCF(CGBitmapContextCreate(0, logicalSize().width(), logicalSize().height(), 8, 4 * logicalSize().width(), deviceRGBColorSpaceRef(), kCGImageAlphaPremultipliedLast));
CGContextSetBlendMode(context.get(), kCGBlendModeCopy);
CGContextClipToRect(context.get(), FloatRect(FloatPoint::zero(), logicalSize()));
FloatSize imageSizeInUserSpace = scaleSizeToUserSpace(logicalSize(), m_data.backingStoreSize, internalSize());
CGContextDrawImage(context.get(), FloatRect(FloatPoint::zero(), imageSizeInUserSpace), image.get());
image = adoptCF(CGBitmapContextCreateImage(context.get()));
}
if (!image)
return nullptr;
return BitmapImage::create(image.get());
}
void FilterEffectRenderer::allocateBackingStoreIfNeeded()
{
// At this point the effect chain has been built, and the
// source image sizes set. We just need to attach the graphic
// buffer if we have not yet done so.
if (!m_graphicsBufferAttached) {
IntSize logicalSize(m_sourceDrawingRegion.width(), m_sourceDrawingRegion.height());
if (!sourceImage() || sourceImage()->size() != logicalSize) {
OwnPtr<ImageBufferSurface> surface = adoptPtr(new UnacceleratedImageBufferSurface(logicalSize));
setSourceImage(ImageBuffer::create(surface.release()));
}
m_graphicsBufferAttached = true;
}
}
void FilterEffectRenderer::prepare()
{
// At this point the effect chain has been built, and the
// source image sizes set. We just need to attach the graphic
// buffer if we have not yet done so.
if (!m_graphicsBufferAttached) {
IntSize logicalSize(m_sourceDrawingRegion.width(), m_sourceDrawingRegion.height());
setSourceImage(ImageBuffer::create(logicalSize, 1, ColorSpaceDeviceRGB, renderingMode()));
m_graphicsBufferAttached = true;
}
m_sourceGraphic->clearResult();
for (size_t i = 0; i < m_effects.size(); ++i)
m_effects[i]->clearResult();
}
String ImageBuffer::toDataURL(const String& mimeType, const double* quality, CoordinateSystem) const
{
ASSERT(MIMETypeRegistry::isSupportedImageMIMETypeForEncoding(mimeType));
if (context().isAcceleratedContext())
flushContext();
RetainPtr<CFStringRef> uti = utiFromMIMEType(mimeType);
ASSERT(uti);
RefPtr<Uint8ClampedArray> premultipliedData;
RetainPtr<CGImageRef> image;
if (CFEqual(uti.get(), jpegUTI())) {
// JPEGs don't have an alpha channel, so we have to manually composite on top of black.
premultipliedData = getPremultipliedImageData(IntRect(IntPoint(0, 0), logicalSize()));
if (!premultipliedData)
return "data:,";
RetainPtr<CGDataProviderRef> dataProvider;
dataProvider = adoptCF(CGDataProviderCreateWithData(0, premultipliedData->data(), 4 * logicalSize().width() * logicalSize().height(), 0));
if (!dataProvider)
return "data:,";
image = adoptCF(CGImageCreate(logicalSize().width(), logicalSize().height(), 8, 32, 4 * logicalSize().width(),
deviceRGBColorSpaceRef(), kCGBitmapByteOrderDefault | kCGImageAlphaNoneSkipLast,
dataProvider.get(), 0, false, kCGRenderingIntentDefault));
} else if (m_resolutionScale == 1) {
image = copyNativeImage(CopyBackingStore);
image = createCroppedImageIfNecessary(image.get(), internalSize());
} else {
image = copyNativeImage(DontCopyBackingStore);
RetainPtr<CGContextRef> context = adoptCF(CGBitmapContextCreate(0, logicalSize().width(), logicalSize().height(), 8, 4 * logicalSize().width(), deviceRGBColorSpaceRef(), kCGImageAlphaPremultipliedLast));
CGContextSetBlendMode(context.get(), kCGBlendModeCopy);
CGContextClipToRect(context.get(), CGRectMake(0, 0, logicalSize().width(), logicalSize().height()));
FloatSize imageSizeInUserSpace = scaleSizeToUserSpace(logicalSize(), m_data.backingStoreSize, internalSize());
CGContextDrawImage(context.get(), CGRectMake(0, 0, imageSizeInUserSpace.width(), imageSizeInUserSpace.height()), image.get());
image = adoptCF(CGBitmapContextCreateImage(context.get()));
}
return CGImageToDataURL(image.get(), mimeType, quality);
}
PatternData* RenderSVGResourcePattern::buildPattern(RenderElement& renderer, unsigned short resourceMode, GraphicsContext& context)
{
PatternData* currentData = m_patternMap.get(&renderer);
if (currentData && currentData->pattern)
return currentData;
if (m_shouldCollectPatternAttributes) {
patternElement().synchronizeAnimatedSVGAttribute(anyQName());
m_attributes = PatternAttributes();
patternElement().collectPatternAttributes(m_attributes);
m_shouldCollectPatternAttributes = false;
}
// If we couldn't determine the pattern content element root, stop here.
if (!m_attributes.patternContentElement())
return nullptr;
// An empty viewBox disables rendering.
if (m_attributes.hasViewBox() && m_attributes.viewBox().isEmpty())
return nullptr;
// Compute all necessary transformations to build the tile image & the pattern.
FloatRect tileBoundaries;
AffineTransform tileImageTransform;
if (!buildTileImageTransform(renderer, m_attributes, patternElement(), tileBoundaries, tileImageTransform))
return nullptr;
AffineTransform absoluteTransformIgnoringRotation = SVGRenderingContext::calculateTransformationToOutermostCoordinateSystem(renderer);
// Ignore 2D rotation, as it doesn't affect the size of the tile.
SVGRenderingContext::clear2DRotation(absoluteTransformIgnoringRotation);
FloatRect absoluteTileBoundaries = absoluteTransformIgnoringRotation.mapRect(tileBoundaries);
FloatRect clampedAbsoluteTileBoundaries;
// Scale the tile size to match the scale level of the patternTransform.
absoluteTileBoundaries.scale(static_cast<float>(m_attributes.patternTransform().xScale()),
static_cast<float>(m_attributes.patternTransform().yScale()));
// Build tile image.
auto tileImage = createTileImage(m_attributes, tileBoundaries, absoluteTileBoundaries, tileImageTransform, clampedAbsoluteTileBoundaries, context.isAcceleratedContext() ? Accelerated : Unaccelerated);
if (!tileImage)
return nullptr;
RefPtr<Image> copiedImage = tileImage->copyImage(CopyBackingStore);
if (!copiedImage)
return nullptr;
// Build pattern.
auto patternData = std::make_unique<PatternData>();
patternData->pattern = Pattern::create(copiedImage, true, true);
// Compute pattern space transformation.
const IntSize tileImageSize = tileImage->logicalSize();
patternData->transform.translate(tileBoundaries.x(), tileBoundaries.y());
patternData->transform.scale(tileBoundaries.width() / tileImageSize.width(), tileBoundaries.height() / tileImageSize.height());
AffineTransform patternTransform = m_attributes.patternTransform();
if (!patternTransform.isIdentity())
patternData->transform = patternTransform * patternData->transform;
// Account for text drawing resetting the context to non-scaled, see SVGInlineTextBox::paintTextWithShadows.
if (resourceMode & ApplyToTextMode) {
AffineTransform additionalTextTransformation;
if (shouldTransformOnTextPainting(renderer, additionalTextTransformation))
patternData->transform *= additionalTextTransformation;
}
patternData->pattern->setPatternSpaceTransform(patternData->transform);
// Various calls above may trigger invalidations in some fringe cases (ImageBuffer allocation
// failures in the SVG image cache for example). To avoid having our PatternData deleted by
// removeAllClientsFromCache(), we only make it visible in the cache at the very end.
return m_patternMap.set(&renderer, WTF::move(patternData)).iterator->value.get();
}
void ImageBuffer::putByteArray(Multiply multiplied, Uint8ClampedArray* source, const IntSize& sourceSize, const IntRect& sourceRect, const IntPoint& destPoint, CoordinateSystem coordinateSystem)
{
if (!context().isAcceleratedContext()) {
IntRect scaledSourceRect = sourceRect;
IntSize scaledSourceSize = sourceSize;
if (coordinateSystem == LogicalCoordinateSystem) {
scaledSourceRect.scale(m_resolutionScale);
scaledSourceSize.scale(m_resolutionScale);
}
m_data.putData(source, scaledSourceSize, scaledSourceRect, destPoint, internalSize(), false, multiplied == Unmultiplied, 1);
return;
}
#if USE(IOSURFACE_CANVAS_BACKING_STORE)
// Make a copy of the source to ensure the bits don't change before being drawn
IntSize sourceCopySize(sourceRect.width(), sourceRect.height());
// FIXME (149431): Should this ImageBuffer be unconditionally unaccelerated? Making it match the context seems to break putData().
std::unique_ptr<ImageBuffer> sourceCopy = ImageBuffer::create(sourceCopySize, Unaccelerated, 1, ColorSpaceDeviceRGB);
if (!sourceCopy)
return;
sourceCopy->m_data.putData(source, sourceSize, sourceRect, IntPoint(-sourceRect.x(), -sourceRect.y()), sourceCopy->internalSize(), sourceCopy->context().isAcceleratedContext(), multiplied == Unmultiplied, 1);
// Set up context for using drawImage as a direct bit copy
CGContextRef destContext = context().platformContext();
CGContextSaveGState(destContext);
if (coordinateSystem == LogicalCoordinateSystem)
CGContextConcatCTM(destContext, AffineTransform(wkGetUserToBaseCTM(destContext)).inverse());
else
CGContextConcatCTM(destContext, AffineTransform(CGContextGetCTM(destContext)).inverse());
CGContextResetClip(destContext);
CGContextSetInterpolationQuality(destContext, kCGInterpolationNone);
CGContextSetAlpha(destContext, 1.0);
CGContextSetBlendMode(destContext, kCGBlendModeCopy);
CGContextSetShadowWithColor(destContext, CGSizeZero, 0, 0);
// Draw the image in CG coordinate space
FloatSize scaledDestSize = scaleSizeToUserSpace(coordinateSystem == LogicalCoordinateSystem ? logicalSize() : internalSize(), m_data.backingStoreSize, internalSize());
IntPoint destPointInCGCoords(destPoint.x() + sourceRect.x(), scaledDestSize.height() - (destPoint.y() + sourceRect.y()) - sourceRect.height());
IntRect destRectInCGCoords(destPointInCGCoords, sourceCopySize);
CGContextClipToRect(destContext, destRectInCGCoords);
RetainPtr<CGImageRef> sourceCopyImage = sourceCopy->copyNativeImage();
FloatRect backingStoreInDestRect = FloatRect(FloatPoint(destPointInCGCoords.x(), destPointInCGCoords.y() + sourceCopySize.height() - (int)CGImageGetHeight(sourceCopyImage.get())), FloatSize(CGImageGetWidth(sourceCopyImage.get()), CGImageGetHeight(sourceCopyImage.get())));
CGContextDrawImage(destContext, backingStoreInDestRect, sourceCopyImage.get());
CGContextRestoreGState(destContext);
#endif
}
void ImageBuffer::putByteArray(Multiply multiplied, Uint8ClampedArray* source, const IntSize& sourceSize, const IntRect& sourceRect, const IntPoint& destPoint, CoordinateSystem coordinateSystem)
{
if (!m_context->isAcceleratedContext()) {
m_data.putData(source, sourceSize, sourceRect, destPoint, internalSize(), m_context->isAcceleratedContext(), multiplied == Unmultiplied, coordinateSystem == LogicalCoordinateSystem ? m_resolutionScale : 1);
return;
}
#if USE(IOSURFACE_CANVAS_BACKING_STORE)
// Make a copy of the source to ensure the bits don't change before being drawn
IntSize sourceCopySize(sourceRect.width(), sourceRect.height());
OwnPtr<ImageBuffer> sourceCopy = ImageBuffer::create(sourceCopySize, 1, ColorSpaceDeviceRGB, Unaccelerated);
if (!sourceCopy)
return;
sourceCopy->m_data.putData(source, sourceSize, sourceRect, IntPoint(-sourceRect.x(), -sourceRect.y()), sourceCopy->internalSize(), sourceCopy->context()->isAcceleratedContext(), multiplied == Unmultiplied, 1);
// Set up context for using drawImage as a direct bit copy
CGContextRef destContext = context()->platformContext();
CGContextSaveGState(destContext);
if (coordinateSystem == LogicalCoordinateSystem)
CGContextConcatCTM(destContext, AffineTransform(wkGetUserToBaseCTM(destContext)).inverse());
else
CGContextConcatCTM(destContext, AffineTransform(CGContextGetCTM(destContext)).inverse());
wkCGContextResetClip(destContext);
CGContextSetInterpolationQuality(destContext, kCGInterpolationNone);
CGContextSetAlpha(destContext, 1.0);
CGContextSetBlendMode(destContext, kCGBlendModeCopy);
CGContextSetShadowWithColor(destContext, CGSizeZero, 0, 0);
// Draw the image in CG coordinate space
IntPoint destPointInCGCoords(destPoint.x() + sourceRect.x(), (coordinateSystem == LogicalCoordinateSystem ? logicalSize() : internalSize()).height() - (destPoint.y() + sourceRect.y()) - sourceRect.height());
IntRect destRectInCGCoords(destPointInCGCoords, sourceCopySize);
RetainPtr<CGImageRef> sourceCopyImage(AdoptCF, sourceCopy->copyNativeImage());
CGContextDrawImage(destContext, destRectInCGCoords, sourceCopyImage.get());
CGContextRestoreGState(destContext);
#endif
}
