Source/WebCore/rendering/svg/RenderSVGTransformableContainer.h

/*
 * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
 * Copyright (C) 2009 Google, 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.
 */

#pragma once

#include "RenderSVGContainer.h"
#include "SVGGraphicsElement.h"

namespace WebCore {
    
class SVGGraphicsElement;
class RenderSVGTransformableContainer final : public RenderSVGContainer {
    WTF_MAKE_ISO_ALLOCATED(RenderSVGTransformableContainer);
public:
    RenderSVGTransformableContainer(SVGGraphicsElement&, RenderStyle&&);
    SVGGraphicsElement& graphicsElement() { return downcast<SVGGraphicsElement>(RenderSVGContainer::element()); }

    bool isSVGTransformableContainer() const override { return true; }
    const AffineTransform& localToParentTransform() const override { return m_localTransform; }
    void setNeedsTransformUpdate() override { m_needsTransformUpdate = true; }
    bool didTransformToRootUpdate() override { return m_didTransformToRootUpdate; }

private:
    void element() const = delete;
    bool calculateLocalTransform() override;
    AffineTransform localTransform() const override { return m_localTransform; }

    bool m_needsTransformUpdate : 1;
    bool m_didTransformToRootUpdate : 1;
    AffineTransform m_localTransform;
    FloatSize m_lastTranslation;
};

} // namespace WebCore

SPECIALIZE_TYPE_TRAITS_RENDER_OBJECT(RenderSVGTransformableContainer, isSVGTransformableContainer())