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/**
* Copyright (C) 2021, 2022 Igalia S.L.
*
* 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 "RenderLayerModelObject.h"
#include <wtf/Noncopyable.h>
#include <wtf/OptionSet.h>
namespace WebCore {
class FloatRect;
class SVGBoundingBoxComputation {
WTF_MAKE_NONCOPYABLE(SVGBoundingBoxComputation);
public:
explicit SVGBoundingBoxComputation(const RenderLayerModelObject&);
~SVGBoundingBoxComputation() = default;
enum class DecorationOption : uint16_t {
IncludeFillShape = 1 << 0, /* corresponds to 'bool fill' */
IncludeStrokeShape = 1 << 1, /* corresponds to 'bool stroke' */
IncludeMarkers = 1 << 2, /* corresponds to 'bool markers' */
IncludeClippers = 1 << 3, /* corresponds to 'bool clippers' */
IncludeMaskers = 1 << 4, /* WebKit extension - internal */
IncludeOutline = 1 << 5, /* WebKit extension - internal */
IgnoreTransformations = 1 << 6, /* WebKit extension - internal */
OverrideBoxWithFilterBox = 1 << 7, /* WebKit extension - internal */
OverrideBoxWithFilterBoxForChildren = 1 << 8, /* WebKit extension - internal */
CalculateFastRepaintRect = 1 << 9, /* WebKit extension - internal */
UseFilterBoxOnEmptyRect = 1 << 10 /* WebKit extension - internal */
};
using DecorationOptions = OptionSet<DecorationOption>;
static constexpr DecorationOptions objectBoundingBoxDecoration = { DecorationOption::IncludeFillShape };
static constexpr DecorationOptions strokeBoundingBoxDecoration = { DecorationOption::IncludeFillShape, DecorationOption::IncludeStrokeShape };
static constexpr DecorationOptions filterBoundingBoxDecoration = { DecorationOption::OverrideBoxWithFilterBox, DecorationOption::OverrideBoxWithFilterBoxForChildren };
static constexpr DecorationOptions repaintBoundingBoxDecoration = { DecorationOption::IncludeFillShape, DecorationOption::IncludeStrokeShape, DecorationOption::IncludeMarkers, DecorationOption::IncludeClippers, DecorationOption::IncludeMaskers, DecorationOption::OverrideBoxWithFilterBox, DecorationOption::CalculateFastRepaintRect };
FloatRect computeDecoratedBoundingBox(const DecorationOptions&, bool* boundingBoxValid = nullptr) const;
static FloatRect computeDecoratedBoundingBox(const RenderLayerModelObject& renderer, const DecorationOptions& options)
{
SVGBoundingBoxComputation boundingBoxComputation(renderer);
return boundingBoxComputation.computeDecoratedBoundingBox(options);
}
static FloatRect computeRepaintBoundingBox(const RenderLayerModelObject& renderer)
{
return computeDecoratedBoundingBox(renderer, repaintBoundingBoxDecoration);
}
static LayoutRect computeVisualOverflowRect(const RenderLayerModelObject&);
private:
FloatRect handleShapeOrTextOrInline(const DecorationOptions&, bool* boundingBoxValid = nullptr) const;
FloatRect handleRootOrContainer(const DecorationOptions&, bool* boundingBoxValid = nullptr) const;
FloatRect handleForeignObjectOrImage(const DecorationOptions&, bool* boundingBoxValid = nullptr) const;
void adjustBoxForClippingAndEffects(const DecorationOptions&, FloatRect& box, const DecorationOptions& optionsToCheckForFilters = filterBoundingBoxDecoration) const;
SingleThreadWeakRef<const RenderLayerModelObject> m_renderer;
};
} // namespace WebCore
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