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/*
* Copyright (C) 2017 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. AND ITS CONTRIBUTORS ``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 ITS 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 "CanvasRenderingContext.h"
#include "ExceptionOr.h"
#include "ImageBitmapRenderingContextSettings.h"
#include <memory>
#include <wtf/RefPtr.h>
namespace WebCore {
class ImageBitmap;
class ImageBuffer;
class OffscreenCanvas;
#if ENABLE(OFFSCREEN_CANVAS)
using ImageBitmapCanvas = std::variant<RefPtr<HTMLCanvasElement>, RefPtr<OffscreenCanvas>>;
#else
using ImageBitmapCanvas = std::variant<RefPtr<HTMLCanvasElement>>;
#endif
class ImageBitmapRenderingContext final : public CanvasRenderingContext {
WTF_MAKE_ISO_ALLOCATED(ImageBitmapRenderingContext);
public:
static std::unique_ptr<ImageBitmapRenderingContext> create(CanvasBase&, ImageBitmapRenderingContextSettings&&);
enum class BitmapMode {
Valid,
Blank
};
~ImageBitmapRenderingContext();
ImageBitmapCanvas canvas();
ExceptionOr<void> transferFromImageBitmap(RefPtr<ImageBitmap>);
BitmapMode bitmapMode() { return m_bitmapMode; }
bool hasAlpha() { return m_settings.alpha; }
private:
ImageBitmapRenderingContext(CanvasBase&, ImageBitmapRenderingContextSettings&&);
bool isBitmapRenderer() const final { return true; }
bool isAccelerated() const override;
void setOutputBitmap(RefPtr<ImageBitmap>);
BitmapMode m_bitmapMode { BitmapMode::Blank };
ImageBitmapRenderingContextSettings m_settings;
};
}
SPECIALIZE_TYPE_TRAITS_CANVASRENDERINGCONTEXT(WebCore::ImageBitmapRenderingContext, isBitmapRenderer())
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