Source/core/svg/SVGFilterPrimitiveStandardAttributes.h

/*
 * Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
 * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
 *
 * 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 SVGFilterPrimitiveStandardAttributes_h
#define SVGFilterPrimitiveStandardAttributes_h

#include "core/rendering/svg/RenderSVGResource.h"
#include "core/svg/SVGAnimatedLength.h"
#include "core/svg/SVGAnimatedString.h"
#include "core/svg/SVGElement.h"
#include "wtf/PassRefPtr.h"
#include "wtf/RefPtr.h"

namespace blink {

class Filter;
class FilterEffect;
class SVGFilterBuilder;

class SVGFilterPrimitiveStandardAttributes : public SVGElement {
public:
    void setStandardAttributes(FilterEffect*) const;

    virtual PassRefPtr<FilterEffect> build(SVGFilterBuilder*, Filter* filter) = 0;
    // Returns true, if the new value is different from the old one.
    virtual bool setFilterEffectAttribute(FilterEffect*, const QualifiedName&);

    // JS API
    SVGAnimatedLength* x() const { return m_x.get(); }
    SVGAnimatedLength* y() const { return m_y.get(); }
    SVGAnimatedLength* width() const { return m_width.get(); }
    SVGAnimatedLength* height() const { return m_height.get(); }
    SVGAnimatedString* result() const { return m_result.get(); }

protected:
    SVGFilterPrimitiveStandardAttributes(const QualifiedName&, Document&);

    bool isSupportedAttribute(const QualifiedName&);
    virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
    virtual void svgAttributeChanged(const QualifiedName&) OVERRIDE;
    virtual void childrenChanged(const ChildrenChange&) OVERRIDE;

    inline void invalidate()
    {
        if (RenderObject* primitiveRenderer = renderer())
            RenderSVGResource::markForLayoutAndParentResourceInvalidation(primitiveRenderer);
    }

    void primitiveAttributeChanged(const QualifiedName&);

private:
    virtual bool isFilterEffect() const OVERRIDE FINAL { return true; }

    virtual RenderObject* createRenderer(RenderStyle*) OVERRIDE FINAL;
    virtual bool rendererIsNeeded(const RenderStyle&) OVERRIDE FINAL;

    RefPtr<SVGAnimatedLength> m_x;
    RefPtr<SVGAnimatedLength> m_y;
    RefPtr<SVGAnimatedLength> m_width;
    RefPtr<SVGAnimatedLength> m_height;
    RefPtr<SVGAnimatedString> m_result;
};

void invalidateFilterPrimitiveParent(SVGElement*);

} // namespace blink

#endif