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/*
* Copyright (C) 2006 Apple Computer, Inc.
*
* 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_BLOCK_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_SVG_LAYOUT_SVG_BLOCK_H_
#include "third_party/blink/renderer/core/layout/layout_block_flow.h"
namespace blink {
class SVGElement;
// A common class of SVG objects that delegate layout, paint, etc. tasks to
// LayoutBlockFlow. It has two coordinate spaces:
// - local SVG coordinate space: similar to LayoutSVGModelObject, the space
// that localSVGTransform() applies.
// - local HTML coordinate space: defined by frameRect() as if the local SVG
// coordinate space created a containing block. Like other LayoutBlockFlow
// objects, LayoutSVGBlock's frameRect() is also in physical coordinates with
// flipped blocks direction in the "containing block".
class LayoutSVGBlock : public LayoutBlockFlow {
public:
explicit LayoutSVGBlock(SVGElement*);
// These mapping functions map coordinates in HTML spaces.
void MapLocalToAncestor(const LayoutBoxModelObject* ancestor,
TransformState&,
MapCoordinatesFlags) const final;
void MapAncestorToLocal(const LayoutBoxModelObject* ancestor,
TransformState&,
MapCoordinatesFlags) const final;
const LayoutObject* PushMappingToContainer(
const LayoutBoxModelObject* ancestor_to_stop_at,
LayoutGeometryMap&) const final;
AffineTransform LocalSVGTransform() const final { return local_transform_; }
PaintLayerType LayerTypeRequired() const override { return kNoPaintLayer; }
SVGElement* GetElement() const;
protected:
void WillBeDestroyed() override;
bool MapToVisualRectInAncestorSpaceInternal(
const LayoutBoxModelObject* ancestor,
TransformState&,
VisualRectFlags = kDefaultVisualRectFlags) const final;
AffineTransform local_transform_;
bool IsOfType(LayoutObjectType type) const override {
return type == kLayoutObjectSVG || LayoutBlockFlow::IsOfType(type);
}
void StyleDidChange(StyleDifference, const ComputedStyle* old_style) override;
private:
// LayoutSVGBlock subclasses should use GetElement() instead.
void GetNode() const = delete;
PhysicalRect VisualRectInDocument(VisualRectFlags) const final;
void UpdateFromStyle() final;
bool NodeAtPoint(HitTestResult&,
const HitTestLocation&,
const PhysicalOffset& accumulated_offset,
HitTestAction) override;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_SVG_LAYOUT_SVG_BLOCK_H_
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