Introduce SVGGraphicsElement IDL interface

Source/core/svg/SVGStyledTransformableElement.cpp

-/*
- * Copyright (C) 2004, 2005, 2008 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.
- */
-
-#include "config.h"
-
-#include "core/svg/SVGStyledTransformableElement.h"
-
-#include "SVGNames.h"
-#include "core/platform/graphics/transforms/AffineTransform.h"
-#include "core/rendering/svg/RenderSVGPath.h"
-#include "core/rendering/svg/RenderSVGResource.h"
-#include "core/rendering/svg/SVGPathData.h"
-#include "core/svg/SVGElementInstance.h"
-
-namespace WebCore {
-
-// Animated property definitions
-DEFINE_ANIMATED_TRANSFORM_LIST(SVGStyledTransformableElement, SVGNames::transformAttr, Transform, transform)
-
-BEGIN_REGISTER_ANIMATED_PROPERTIES(SVGStyledTransformableElement)
-    REGISTER_LOCAL_ANIMATED_PROPERTY(transform)
-    REGISTER_PARENT_ANIMATED_PROPERTIES(SVGStyledLocatableElement)
-END_REGISTER_ANIMATED_PROPERTIES
-
-SVGStyledTransformableElement::SVGStyledTransformableElement(const QualifiedName& tagName, Document* document, ConstructionType constructionType)
-    : SVGStyledLocatableElement(tagName, document, constructionType)
-{
-    registerAnimatedPropertiesForSVGStyledTransformableElement();
-}
-
-SVGStyledTransformableElement::~SVGStyledTransformableElement()
-{
-}
-
-AffineTransform SVGStyledTransformableElement::getCTM(StyleUpdateStrategy styleUpdateStrategy)
-{
-    return SVGLocatable::computeCTM(this, SVGLocatable::NearestViewportScope, styleUpdateStrategy);
-}
-
-AffineTransform SVGStyledTransformableElement::getScreenCTM(StyleUpdateStrategy styleUpdateStrategy)
-{
-    return SVGLocatable::computeCTM(this, SVGLocatable::ScreenScope, styleUpdateStrategy);
-}
-
-AffineTransform SVGStyledTransformableElement::animatedLocalTransform() const
-{
-    AffineTransform matrix;
-    RenderStyle* style = renderer() ? renderer()->style() : 0;
-
-    // If CSS property was set, use that, otherwise fallback to attribute (if set).
-    if (style && style->hasTransform()) {
-        // Note: objectBoundingBox is an emptyRect for elements like pattern or clipPath.
-        // See the "Object bounding box units" section of http://dev.w3.org/csswg/css3-transforms/
-        TransformationMatrix transform;
-        style->applyTransform(transform, renderer()->objectBoundingBox());
-
-        // Flatten any 3D transform.
-        matrix = transform.toAffineTransform();
-    } else
-        transform().concatenate(matrix);
-
-    if (m_supplementalTransform)
-        return *m_supplementalTransform * matrix;
-    return matrix;
-}
-
-AffineTransform* SVGStyledTransformableElement::supplementalTransform()
-{
-    if (!m_supplementalTransform)
-        m_supplementalTransform = adoptPtr(new AffineTransform);
-    return m_supplementalTransform.get();
-}
-
-bool SVGStyledTransformableElement::isSupportedAttribute(const QualifiedName& attrName)
-{
-    DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
-    if (supportedAttributes.isEmpty())
-        supportedAttributes.add(SVGNames::transformAttr);
-    return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName);
-}
-
-void SVGStyledTransformableElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
-{
-    if (!isSupportedAttribute(name)) {
-        SVGStyledLocatableElement::parseAttribute(name, value);
-        return;
-    }
-
-    if (name == SVGNames::transformAttr) {
-        SVGTransformList newList;
-        newList.parse(value);
-        detachAnimatedTransformListWrappers(newList.size());
-        setTransformBaseValue(newList);
-        return;
-    }
-
-    ASSERT_NOT_REACHED();
-}
-
-void SVGStyledTransformableElement::svgAttributeChanged(const QualifiedName& attrName)
-{
-    if (!isSupportedAttribute(attrName)) {
-        SVGStyledLocatableElement::svgAttributeChanged(attrName);
-        return;
-    }
-
-    SVGElementInstance::InvalidationGuard invalidationGuard(this);
-
-    RenderObject* object = renderer();
-    if (!object)
-        return;
-
-    if (attrName == SVGNames::transformAttr) {
-        object->setNeedsTransformUpdate();
-        RenderSVGResource::markForLayoutAndParentResourceInvalidation(object);
-        return;
-    }
-
-    ASSERT_NOT_REACHED();
-}
-
-SVGElement* SVGStyledTransformableElement::nearestViewportElement() const
-{
-    return SVGTransformable::nearestViewportElement(this);
-}
-
-SVGElement* SVGStyledTransformableElement::farthestViewportElement() const
-{
-    return SVGTransformable::farthestViewportElement(this);
-}
-
-FloatRect SVGStyledTransformableElement::getBBox(StyleUpdateStrategy styleUpdateStrategy)
-{
-    return SVGTransformable::getBBox(this, styleUpdateStrategy);
-}
-
-RenderObject* SVGStyledTransformableElement::createRenderer(RenderStyle*)
-{
-    // By default, any subclass is expected to do path-based drawing
-    return new (document()->renderArena()) RenderSVGPath(this);
-}
-
-void SVGStyledTransformableElement::toClipPath(Path& path)
-{
-    updatePathFromGraphicsElement(this, path);
-    // FIXME: How do we know the element has done a layout?
-    path.transform(animatedLocalTransform());
-}
-
-}