void BitmapImage::draw(GraphicsContext& context, const FloatRect& dst, const FloatRect& src, CompositeOperator op,
BlendMode blendMode, ImageOrientationDescription description)
{
if (!dst.width() || !dst.height() || !src.width() || !src.height())
return;
startAnimation();
auto surface = frameImageAtIndex(m_currentFrame);
if (!surface) // If it's too early we won't have an image yet.
return;
Color color = singlePixelSolidColor();
if (color.isValid()) {
fillWithSolidColor(context, dst, color, op);
return;
}
context.save();
// Set the compositing operation.
if (op == CompositeSourceOver && blendMode == BlendModeNormal && !frameHasAlphaAtIndex(m_currentFrame))
context.setCompositeOperation(CompositeCopy);
else
context.setCompositeOperation(op, blendMode);
#if ENABLE(IMAGE_DECODER_DOWN_SAMPLING)
IntSize scaledSize = cairoSurfaceSize(surface.get());
FloatRect adjustedSrcRect = adjustSourceRectForDownSampling(src, scaledSize);
#else
FloatRect adjustedSrcRect(src);
#endif
ImageOrientation frameOrientation(description.imageOrientation());
if (description.respectImageOrientation() == RespectImageOrientation)
frameOrientation = frameOrientationAtIndex(m_currentFrame);
FloatRect dstRect = dst;
if (frameOrientation != DefaultImageOrientation) {
// ImageOrientation expects the origin to be at (0, 0).
context.translate(dstRect.x(), dstRect.y());
dstRect.setLocation(FloatPoint());
context.concatCTM(frameOrientation.transformFromDefault(dstRect.size()));
if (frameOrientation.usesWidthAsHeight()) {
// The destination rectangle will have it's width and height already reversed for the orientation of
// the image, as it was needed for page layout, so we need to reverse it back here.
dstRect = FloatRect(dstRect.x(), dstRect.y(), dstRect.height(), dstRect.width());
}
}
context.platformContext()->drawSurfaceToContext(surface.get(), dstRect, adjustedSrcRect, context);
context.restore();
if (imageObserver())
imageObserver()->didDraw(this);
}
CGImageRef BitmapImage::getFirstCGImageRefOfSize(const IntSize& size)
{
size_t count = frameCount();
for (size_t i = 0; i < count; ++i) {
CGImageRef cgImage = frameImageAtIndex(i).get();
if (cgImage && IntSize(CGImageGetWidth(cgImage), CGImageGetHeight(cgImage)) == size)
return cgImage;
}
// Fallback to the default CGImageRef if we can't find the right size
return getCGImageRef();
}
RetainPtr<CFArrayRef> BitmapImage::getCGImageArray()
{
size_t count = frameCount();
if (!count)
return nullptr;
CFMutableArrayRef array = CFArrayCreateMutable(NULL, count, &kCFTypeArrayCallBacks);
for (size_t i = 0; i < count; ++i) {
if (CGImageRef currFrame = frameImageAtIndex(i).get())
CFArrayAppendValue(array, currFrame);
}
return adoptCF(array);
}
void BitmapImage::draw(GraphicsContext& ctxt, const FloatRect& destRect, const FloatRect& srcRect, CompositeOperator compositeOp, BlendMode blendMode, ImageOrientationDescription description)
{
#if PLATFORM(IOS)
startAnimation(DoNotCatchUp);
#else
startAnimation();
#endif
RetainPtr<CGImageRef> image;
// Never use subsampled images for drawing into PDF contexts.
if (wkCGContextIsPDFContext(ctxt.platformContext()))
image = copyUnscaledFrameImageAtIndex(m_currentFrame);
else {
CGRect transformedDestinationRect = CGRectApplyAffineTransform(destRect, CGContextGetCTM(ctxt.platformContext()));
float subsamplingScale = std::min<float>(1, std::max(transformedDestinationRect.size.width / srcRect.width(), transformedDestinationRect.size.height / srcRect.height()));
image = frameImageAtIndex(m_currentFrame, subsamplingScale);
}
if (!image) // If it's too early we won't have an image yet.
return;
if (mayFillWithSolidColor()) {
fillWithSolidColor(ctxt, destRect, solidColor(), compositeOp);
return;
}
// Subsampling may have given us an image that is smaller than size().
IntSize imageSize(CGImageGetWidth(image.get()), CGImageGetHeight(image.get()));
// srcRect is in the coordinates of the unsubsampled image, so we have to map it to the subsampled image.
FloatRect scaledSrcRect = srcRect;
if (imageSize != m_size) {
FloatRect originalImageBounds(FloatPoint(), m_size);
FloatRect subsampledImageBounds(FloatPoint(), imageSize);
scaledSrcRect = mapRect(srcRect, originalImageBounds, subsampledImageBounds);
}
ImageOrientation orientation;
if (description.respectImageOrientation() == RespectImageOrientation)
orientation = frameOrientationAtIndex(m_currentFrame);
ctxt.drawNativeImage(image, imageSize, destRect, scaledSrcRect, compositeOp, blendMode, orientation);
if (imageObserver())
imageObserver()->didDraw(this);
}
void BitmapImage::drawFrameMatchingSourceSize(GraphicsContext& ctxt, const FloatRect& dstRect, const IntSize& srcSize, CompositeOperator compositeOp)
{
size_t frames = frameCount();
for (size_t i = 0; i < frames; ++i) {
CGImageRef image = frameImageAtIndex(i).get();
if (image && CGImageGetHeight(image) == static_cast<size_t>(srcSize.height()) && CGImageGetWidth(image) == static_cast<size_t>(srcSize.width())) {
size_t currentFrame = m_currentFrame;
m_currentFrame = i;
draw(ctxt, dstRect, FloatRect(0.0f, 0.0f, srcSize.width(), srcSize.height()), compositeOp, BlendModeNormal, ImageOrientationDescription());
m_currentFrame = currentFrame;
return;
}
}
// No image of the correct size was found, fallback to drawing the current frame
FloatSize imageSize = BitmapImage::size();
draw(ctxt, dstRect, FloatRect(0.0f, 0.0f, imageSize.width(), imageSize.height()), compositeOp, BlendModeNormal, ImageOrientationDescription());
}
NativeImagePtr BitmapImage::nativeImageForCurrentFrame()
{
return frameImageAtIndex(currentFrame());
}
CGImageRef BitmapImage::getCGImageRef()
{
return frameImageAtIndex(0).get();
}
