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/*
* Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005, 2007 Rob Buis <buis@kde.org>
* Copyright (C) 2009 Google, Inc. All rights reserved.
* Copyright (C) 2009 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.
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_SVG_LAYOUT_SVG_CONTAINER_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_SVG_LAYOUT_SVG_CONTAINER_H_
#include "third_party/blink/renderer/core/layout/svg/layout_svg_model_object.h"
#include "third_party/blink/renderer/platform/wtf/casting.h"
namespace blink {
class SVGElement;
enum class SVGTransformChange;
class LayoutSVGContainer : public LayoutSVGModelObject {
public:
explicit LayoutSVGContainer(SVGElement*);
~LayoutSVGContainer() override;
// If you have a LayoutSVGContainer, use firstChild or lastChild instead.
void SlowFirstChild() const = delete;
void SlowLastChild() const = delete;
LayoutObject* FirstChild() const {
DCHECK_EQ(Children(), VirtualChildren());
return Children()->FirstChild();
}
LayoutObject* LastChild() const {
DCHECK_EQ(Children(), VirtualChildren());
return Children()->LastChild();
}
void Paint(const PaintInfo&) const override;
void StyleDidChange(StyleDifference, const ComputedStyle* old_style) override;
void SetNeedsBoundariesUpdate() final { needs_boundaries_update_ = true; }
bool DidScreenScaleFactorChange() const {
return did_screen_scale_factor_change_;
}
bool IsObjectBoundingBoxValid() const { return object_bounding_box_valid_; }
bool SelfWillPaint() const;
bool HasNonIsolatedBlendingDescendants() const final;
const char* GetName() const override { return "LayoutSVGContainer"; }
FloatRect ObjectBoundingBox() const final { return object_bounding_box_; }
protected:
LayoutObjectChildList* VirtualChildren() final { return Children(); }
const LayoutObjectChildList* VirtualChildren() const final {
return Children();
}
bool IsOfType(LayoutObjectType type) const override {
return type == kLayoutObjectSVGContainer ||
LayoutSVGModelObject::IsOfType(type);
}
void UpdateLayout() override;
void AddChild(LayoutObject* child,
LayoutObject* before_child = nullptr) final;
void RemoveChild(LayoutObject*) final;
FloatRect StrokeBoundingBox() const final { return stroke_bounding_box_; }
bool NodeAtPoint(HitTestResult&,
const HitTestLocation&,
const PhysicalOffset& accumulated_offset,
HitTestAction) override;
// Called during layout to update the local transform.
virtual SVGTransformChange CalculateLocalTransform(bool bounds_changed);
void UpdateCachedBoundaries();
void DescendantIsolationRequirementsChanged(DescendantIsolationState) final;
private:
const LayoutObjectChildList* Children() const { return &children_; }
LayoutObjectChildList* Children() { return &children_; }
LayoutObjectChildList children_;
FloatRect object_bounding_box_;
FloatRect stroke_bounding_box_;
bool object_bounding_box_valid_;
bool needs_boundaries_update_ : 1;
bool did_screen_scale_factor_change_ : 1;
mutable bool has_non_isolated_blending_descendants_ : 1;
mutable bool has_non_isolated_blending_descendants_dirty_ : 1;
};
template <>
struct DowncastTraits<LayoutSVGContainer> {
static bool AllowFrom(const LayoutObject& object) {
return object.IsSVGContainer();
}
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_SVG_LAYOUT_SVG_CONTAINER_H_
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