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/*
* Copyright (C) 2020 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.
*/
#pragma once
#include "ImageBuffer.h"
#include "ImageData.h"
namespace WebCore {
template<typename BackendType>
class ConcreteImageBuffer : public ImageBuffer {
public:
template<typename ImageBufferType = ConcreteImageBuffer, typename... Arguments>
static std::unique_ptr<ImageBufferType> create(const FloatSize& size, float resolutionScale, ColorSpace colorSpace, const HostWindow* hostWindow, Arguments&&... arguments)
{
auto backend = BackendType::create(size, resolutionScale, colorSpace, hostWindow);
if (!backend)
return nullptr;
return std::unique_ptr<ImageBufferType>(new ImageBufferType(WTFMove(backend), std::forward<Arguments>(arguments)...));
}
template<typename ImageBufferType = ConcreteImageBuffer, typename... Arguments>
static std::unique_ptr<ImageBufferType> create(const FloatSize& size, const GraphicsContext& context, Arguments&&... arguments)
{
auto backend = BackendType::create(size, context);
if (!backend)
return nullptr;
return std::unique_ptr<ImageBufferType>(new ImageBufferType(WTFMove(backend), std::forward<Arguments>(arguments)...));
}
protected:
ConcreteImageBuffer(std::unique_ptr<BackendType>&& backend)
: m_backend(WTFMove(backend))
{
}
ConcreteImageBuffer() = default;
virtual BackendType* ensureBackendCreated() const { return m_backend.get(); }
GraphicsContext& context() const override
{
ASSERT(m_backend);
return m_backend->context();
}
void flushContext() override
{
if (auto* backend = ensureBackendCreated()) {
flushDrawingContext();
backend->flushContext();
}
}
AffineTransform baseTransform() const override
{
if (auto* backend = ensureBackendCreated())
return backend->baseTransform();
return { };
}
IntSize logicalSize() const override
{
if (auto* backend = ensureBackendCreated())
return backend->logicalSize();
return { };
}
IntSize backendSize() const override
{
if (auto* backend = ensureBackendCreated())
return backend->backendSize();
return { };
}
float resolutionScale() const override
{
if (auto* backend = ensureBackendCreated())
return backend->resolutionScale();
return 1;
}
size_t memoryCost() const override
{
if (auto* backend = ensureBackendCreated())
return backend->memoryCost();
return 0;
}
size_t externalMemoryCost() const override
{
if (auto* backend = ensureBackendCreated())
return backend->externalMemoryCost();
return 0;
}
NativeImagePtr copyNativeImage(BackingStoreCopy copyBehavior = CopyBackingStore) const override
{
if (auto* backend = ensureBackendCreated()) {
const_cast<ConcreteImageBuffer&>(*this).flushDrawingContext();
return backend->copyNativeImage(copyBehavior);
}
return nullptr;
}
RefPtr<Image> copyImage(BackingStoreCopy copyBehavior = CopyBackingStore, PreserveResolution preserveResolution = PreserveResolution::No) const override
{
if (auto* backend = ensureBackendCreated()) {
const_cast<ConcreteImageBuffer&>(*this).flushDrawingContext();
return backend->copyImage(copyBehavior, preserveResolution);
}
return nullptr;
}
void draw(GraphicsContext& destContext, const FloatRect& destRect, const FloatRect& srcRect, const ImagePaintingOptions& options) override
{
if (auto* backend = ensureBackendCreated()) {
flushDrawingContext();
backend->draw(destContext, destRect, srcRect, options);
}
}
void drawPattern(GraphicsContext& destContext, const FloatRect& destRect, const FloatRect& srcRect, const AffineTransform& patternTransform, const FloatPoint& phase, const FloatSize& spacing, const ImagePaintingOptions& options) override
{
if (auto* backend = ensureBackendCreated()) {
flushDrawingContext();
backend->drawPattern(destContext, destRect, srcRect, patternTransform, phase, spacing, options);
}
}
NativeImagePtr sinkIntoNativeImage() override
{
if (auto* backend = ensureBackendCreated()) {
flushDrawingContext();
return backend->sinkIntoNativeImage();
}
return nullptr;
}
RefPtr<Image> sinkIntoImage(PreserveResolution preserveResolution = PreserveResolution::No) override
{
if (auto* backend = ensureBackendCreated()) {
flushDrawingContext();
return backend->sinkIntoImage(preserveResolution);
}
return nullptr;
}
void drawConsuming(GraphicsContext& destContext, const FloatRect& destRect, const FloatRect& srcRect, const ImagePaintingOptions& options) override
{
if (auto* backend = ensureBackendCreated()) {
flushDrawingContext();
backend->drawConsuming(destContext, destRect, srcRect, options);
}
}
void convertToLuminanceMask() override
{
if (auto* backend = ensureBackendCreated()) {
flushDrawingContext();
backend->convertToLuminanceMask();
}
}
void transformColorSpace(ColorSpace srcColorSpace, ColorSpace destColorSpace) override
{
if (auto* backend = ensureBackendCreated()) {
flushDrawingContext();
backend->transformColorSpace(srcColorSpace, destColorSpace);
}
}
String toDataURL(const String& mimeType, Optional<double> quality, PreserveResolution preserveResolution) const override
{
if (auto* backend = ensureBackendCreated()) {
const_cast<ConcreteImageBuffer&>(*this).flushContext();
return backend->toDataURL(mimeType, quality, preserveResolution);
}
return String();
}
Vector<uint8_t> toData(const String& mimeType, Optional<double> quality = WTF::nullopt) const override
{
if (auto* backend = ensureBackendCreated()) {
const_cast<ConcreteImageBuffer&>(*this).flushContext();
return backend->toData(mimeType, quality);
}
return { };
}
Vector<uint8_t> toBGRAData() const override
{
if (auto* backend = ensureBackendCreated()) {
const_cast<ConcreteImageBuffer&>(*this).flushContext();
return backend->toBGRAData();
}
return { };
}
RefPtr<ImageData> getImageData(AlphaPremultiplication outputFormat, const IntRect& srcRect) const override
{
if (auto* backend = ensureBackendCreated()) {
const_cast<ConcreteImageBuffer&>(*this).flushContext();
return backend->getImageData(outputFormat, srcRect);
}
return nullptr;
}
void putImageData(AlphaPremultiplication inputFormat, const ImageData& imageData, const IntRect& srcRect, const IntPoint& destPoint = { }) override
{
if (auto* backend = ensureBackendCreated()) {
flushContext();
backend->putImageData(inputFormat, imageData, srcRect, destPoint);
}
}
PlatformLayer* platformLayer() const override
{
if (auto* backend = ensureBackendCreated())
return backend->platformLayer();
return nullptr;
}
bool copyToPlatformTexture(GraphicsContextGLOpenGL& context, GCGLenum target, PlatformGLObject destinationTexture, GCGLenum internalformat, bool premultiplyAlpha, bool flipY) const override
{
if (auto* backend = ensureBackendCreated())
return backend->copyToPlatformTexture(context, target, destinationTexture, internalformat, premultiplyAlpha, flipY);
return false;
}
std::unique_ptr<BackendType> m_backend;
};
} // namespace WebCore