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/*
* Copyright (C) 2022 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 THE COPYRIGHT HOLDER "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 THE COPYRIGHT HOLDER 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 "CanvasObserver.h"
#include "HTMLCanvasElement.h"
#include "StyleGeneratedImage.h"
#include <wtf/WeakPtr.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
class Document;
class StyleCanvasImage final : public StyleGeneratedImage, public CanvasObserver {
public:
static Ref<StyleCanvasImage> create(String name)
{
return adoptRef(*new StyleCanvasImage(WTFMove(name)));
}
virtual ~StyleCanvasImage();
bool operator==(const StyleImage&) const final;
bool equals(const StyleCanvasImage&) const;
static constexpr bool isFixedSize = true;
private:
explicit StyleCanvasImage(String&&);
Ref<CSSValue> computedStyleValue(const RenderStyle&) const final;
bool isPending() const final;
void load(CachedResourceLoader&, const ResourceLoaderOptions&) final;
RefPtr<Image> image(const RenderElement*, const FloatSize&, bool isForFirstLine) const final;
bool knownToBeOpaque(const RenderElement&) const final;
FloatSize fixedSize(const RenderElement&) const final;
void didAddClient(RenderElement&) final;
void didRemoveClient(RenderElement&) final;
// CanvasObserver.
bool isStyleCanvasImage() const final { return true; }
void canvasChanged(CanvasBase&, const FloatRect&) final;
void canvasResized(CanvasBase&) final;
void canvasDestroyed(CanvasBase&) final;
HTMLCanvasElement* element(Document&) const;
// The name of the canvas.
String m_name;
// The document supplies the element and owns it.
mutable WeakPtr<HTMLCanvasElement, WeakPtrImplWithEventTargetData> m_element;
};
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::StyleCanvasImage)
static bool isType(const WebCore::StyleImage& image) { return image.isCanvasImage(); }
static bool isType(const WebCore::CanvasObserver& canvasObserver) { return canvasObserver.isStyleCanvasImage(); }
SPECIALIZE_TYPE_TRAITS_END()
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