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/*
* Copyright (C) Research In Motion Limited 2009-2010. 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.
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_SVG_LAYOUT_SVG_RESOURCE_CLIPPER_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_SVG_LAYOUT_SVG_RESOURCE_CLIPPER_H_
#include "third_party/blink/renderer/core/layout/svg/layout_svg_resource_container.h"
#include "third_party/blink/renderer/core/style/reference_clip_path_operation.h"
#include "third_party/blink/renderer/core/svg/svg_unit_types.h"
#include "third_party/skia/include/core/SkRefCnt.h"
namespace blink {
class SVGClipPathElement;
class LayoutSVGResourceClipper final : public LayoutSVGResourceContainer {
public:
explicit LayoutSVGResourceClipper(SVGClipPathElement*);
~LayoutSVGResourceClipper() override;
const char* GetName() const override { return "LayoutSVGResourceClipper"; }
void RemoveAllClientsFromCache() override;
FloatRect ResourceBoundingBox(const FloatRect& reference_box);
static const LayoutSVGResourceType kResourceType = kClipperResourceType;
LayoutSVGResourceType ResourceType() const override { return kResourceType; }
bool HitTestClipContent(const FloatRect&, const HitTestLocation&) const;
SVGUnitTypes::SVGUnitType ClipPathUnits() const;
AffineTransform CalculateClipTransform(const FloatRect& reference_box) const;
base::Optional<Path> AsPath();
sk_sp<const PaintRecord> CreatePaintRecord();
protected:
void StyleDidChange(StyleDifference, const ComputedStyle* old_style) override;
void WillBeDestroyed() override;
private:
void CalculateLocalClipBounds();
// Cache of the clip path when using path clipping.
enum ClipContentPathValidity {
kClipContentPathUnknown,
kClipContentPathValid,
kClipContentPathInvalid
} clip_content_path_validity_ = kClipContentPathUnknown;
Path clip_content_path_;
// Cache of the clip path paint record when falling back to masking for
// clipping.
sk_sp<const PaintRecord> cached_paint_record_;
FloatRect local_clip_bounds_;
};
DEFINE_LAYOUT_SVG_RESOURCE_TYPE_CASTS(LayoutSVGResourceClipper,
kClipperResourceType);
inline LayoutSVGResourceClipper* GetSVGResourceAsType(
const ClipPathOperation* clip_path_operation) {
const auto* reference_clip =
DynamicTo<ReferenceClipPathOperation>(clip_path_operation);
if (!reference_clip)
return nullptr;
return GetSVGResourceAsType<LayoutSVGResourceClipper>(
reference_clip->Resource());
}
} // namespace blink
#endif
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