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/*
* Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
* Copyright (C) 2004-2024 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "BitmapImage.h"
#include "BitmapImageSource.h"
#include "GeometryUtilities.h"
#include "GraphicsContext.h"
#include "ImageBuffer.h"
#include "ImageObserver.h"
#include "NativeImageSource.h"
namespace WebCore {
Ref<BitmapImage> BitmapImage::create(ImageObserver* observer, AlphaOption alphaOption, GammaAndColorProfileOption gammaAndColorProfileOption)
{
return adoptRef(*new BitmapImage(observer, alphaOption, gammaAndColorProfileOption));
}
Ref<BitmapImage> BitmapImage::create(Ref<NativeImage>&& nativeImage)
{
return adoptRef(*new BitmapImage(WTFMove(nativeImage)));
}
RefPtr<BitmapImage> BitmapImage::create(RefPtr<NativeImage>&& nativeImage)
{
if (!nativeImage)
return nullptr;
return adoptRef(*new BitmapImage(nativeImage.releaseNonNull()));
}
RefPtr<BitmapImage> BitmapImage::create(PlatformImagePtr&& platformImage)
{
return create(NativeImage::create(WTFMove(platformImage)));
}
BitmapImage::BitmapImage(ImageObserver* observer, AlphaOption alphaOption, GammaAndColorProfileOption gammaAndColorProfileOption)
: Image(observer)
, m_source(BitmapImageSource::create(*this, alphaOption, gammaAndColorProfileOption))
{
}
BitmapImage::BitmapImage(Ref<NativeImage>&& image)
: m_source(NativeImageSource::create(WTFMove(image)))
{
}
EncodedDataStatus BitmapImage::dataChanged(bool allDataReceived)
{
return m_source->dataChanged(data(), allDataReceived);
}
void BitmapImage::destroyDecodedData(bool destroyAll)
{
m_source->destroyDecodedData(destroyAll);
invalidateAdapter();
}
ImageDrawResult BitmapImage::draw(GraphicsContext& context, const FloatRect& destinationRect, const FloatRect& sourceRect, ImagePaintingOptions options)
{
if (destinationRect.isEmpty() || sourceRect.isEmpty())
return ImageDrawResult::DidNothing;
auto size = m_source->size(ImageOrientation::Orientation::None);
auto sourceSize = m_source->sourceSize(ImageOrientation::Orientation::None);
// adjustedSourceRect is in the coordinates of densityCorrectedSize, so map it to the sourceSize.
auto adjustedSourceRect = sourceRect;
if (sourceSize != size)
adjustedSourceRect.scale(sourceSize / size);
auto scaleFactorForDrawing = context.scaleFactorForDrawing(destinationRect, adjustedSourceRect);
auto sizeForDrawing = expandedIntSize(sourceSize * scaleFactorForDrawing);
auto subsamplingLevel = m_source->subsamplingLevelForScaleFactor(context, scaleFactorForDrawing, options.allowImageSubsampling());
auto nativeImage = m_source->currentNativeImageForDrawing(subsamplingLevel, { options.decodingMode(), sizeForDrawing });
if (!nativeImage) {
// The decoder has not returned a frame. Fill the image rectangle with a debugging color to show what has happened.
if (options.showDebugBackground() == ShowDebugBackground::Yes) {
if (nativeImage.error() == DecodingStatus::Decoding)
fillWithSolidColor(context, destinationRect, Color::yellow.colorWithAlphaByte(128), options.compositeOperator());
else if (nativeImage.error() == DecodingStatus::Invalid)
fillWithSolidColor(context, destinationRect, Color::red.colorWithAlphaByte(128), options.compositeOperator());
}
return nativeImage.error() == DecodingStatus::Decoding ? ImageDrawResult::DidRequestDecoding : ImageDrawResult::DidNothing;
}
if (auto color = (*nativeImage)->singlePixelSolidColor())
fillWithSolidColor(context, destinationRect, *color, options.compositeOperator());
else {
// adjustedSourceRect is in the coordinates of the unsubsampled image, so map it to the subsampled image.
auto imageSize = (*nativeImage)->size();
if (imageSize != sourceSize)
adjustedSourceRect.scale(imageSize / sourceSize);
auto orientation = options.orientation();
if (orientation == ImageOrientation::Orientation::FromImage)
orientation = currentFrameOrientation();
auto headroom = options.headroom();
if (headroom == Headroom::FromImage && headroomForTesting().value_or(Headroom::None) > Headroom::None)
fillWithSolidColor(context, destinationRect, Color::gold, options.compositeOperator());
else {
if (headroom == Headroom::FromImage)
headroom = currentFrameHeadroom();
context.drawNativeImage(*nativeImage, destinationRect, adjustedSourceRect, { options, orientation, headroom });
}
}
if (auto observer = imageObserver())
observer->didDraw(*this);
return ImageDrawResult::DidDraw;
}
void BitmapImage::drawPattern(GraphicsContext& context, const FloatRect& destinationRect, const FloatRect& tileRect, const AffineTransform& transform, const FloatPoint& phase, const FloatSize& spacing, ImagePaintingOptions options)
{
if (tileRect.isEmpty())
return;
if (context.drawLuminanceMask())
drawLuminanceMaskPattern(context, destinationRect, tileRect, transform, phase, spacing, options);
else
Image::drawPattern(context, destinationRect, tileRect, transform, phase, spacing, { options, ImageOrientation::Orientation::FromImage });
}
void BitmapImage::drawLuminanceMaskPattern(GraphicsContext& context, const FloatRect& destinationRect, const FloatRect& tileRect, const AffineTransform& transform, const FloatPoint& phase, const FloatSize& spacing, ImagePaintingOptions options)
{
ASSERT(!tileRect.isEmpty());
ASSERT(context.drawLuminanceMask());
auto buffer = context.createImageBuffer(expandedIntSize(tileRect.size()));
if (!buffer)
return;
auto observer = imageObserver();
// Temporarily reset image observer, we don't want to receive any changeInRect() calls due to this relayout.
setImageObserver(nullptr);
auto bufferRect = FloatRect { { }, buffer->logicalSize() };
draw(buffer->context(), bufferRect, tileRect, { options, DecodingMode::Synchronous, ImageOrientation::Orientation::FromImage });
setImageObserver(WTFMove(observer));
buffer->convertToLuminanceMask();
context.setDrawLuminanceMask(false);
context.drawPattern(*buffer, destinationRect, bufferRect, transform, phase, spacing, { options, ImageOrientation::Orientation::FromImage });
}
void BitmapImage::dump(TextStream& ts) const
{
Image::dump(ts);
m_source->dump(ts);
}
} // namespace WebCore
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