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/*
* Copyright (C) 2000 Lars Knoll (knoll@kde.org)
* (C) 2000 Antti Koivisto (koivisto@kde.org)
* (C) 2000 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2003-2021 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#pragma once
#include "FloatSize.h"
#include "FloatSizeHash.h"
#include "StyleImage.h"
#include <wtf/HashMap.h>
#include <wtf/WeakHashCountedSet.h>
namespace WebCore {
class CSSValue;
class CachedImage;
class CachedResourceLoader;
class GeneratedImage;
class Image;
class RenderElement;
struct ResourceLoaderOptions;
class StyleGeneratedImage : public StyleImage {
public:
const SingleThreadWeakHashCountedSet<RenderElement>& clients() const { return m_clients; }
protected:
explicit StyleGeneratedImage(StyleImage::Type, bool fixedSize);
virtual ~StyleGeneratedImage();
WrappedImagePtr data() const final { return this; }
FloatSize imageSize(const RenderElement*, float multiplier) const final;
void computeIntrinsicDimensions(const RenderElement*, Length& intrinsicWidth, Length& intrinsicHeight, FloatSize& intrinsicRatio) final;
bool imageHasRelativeWidth() const final { return !m_fixedSize; }
bool imageHasRelativeHeight() const final { return !m_fixedSize; }
bool usesImageContainerSize() const final { return !m_fixedSize; }
void setContainerContextForRenderer(const RenderElement&, const FloatSize& containerSize, float) final { m_containerSize = containerSize; }
bool imageHasNaturalDimensions() const final { return !usesImageContainerSize(); }
void addClient(RenderElement&) final;
void removeClient(RenderElement&) final;
bool hasClient(RenderElement&) const final;
// Allow subclasses to react to clients being added/removed.
virtual void didAddClient(RenderElement&) = 0;
virtual void didRemoveClient(RenderElement&) = 0;
// All generated images must be able to compute their fixed size.
virtual FloatSize fixedSize(const RenderElement&) const = 0;
class CachedGeneratedImage;
GeneratedImage* cachedImageForSize(FloatSize);
void saveCachedImageForSize(FloatSize, GeneratedImage&);
void evictCachedGeneratedImage(FloatSize);
FloatSize m_containerSize;
bool m_fixedSize;
SingleThreadWeakHashCountedSet<RenderElement> m_clients;
UncheckedKeyHashMap<FloatSize, std::unique_ptr<CachedGeneratedImage>> m_images;
};
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_STYLE_IMAGE(StyleGeneratedImage, isGeneratedImage)
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