1 /*

     2     Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>

     3                   2004, 2005, 2006 Rob Buis <buis@kde.org>

     4 

     5     This library is free software; you can redistribute it and/or

     6     modify it under the terms of the GNU Library General Public

     7     License as published by the Free Software Foundation; either

     8     version 2 of the License, or (at your option) any later version.

     9 

    10     This library is distributed in the hope that it will be useful,

    11     but WITHOUT ANY WARRANTY; without even the implied warranty of

    12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    13     Library General Public License for more details.

    14 

    15     You should have received a copy of the GNU Library General Public License

    16     along with this library; see the file COPYING.LIB.  If not, write to

    17     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,

    18     Boston, MA 02110-1301, USA.

    19 */

    20 

    21 #include "config.h"

    22 

    23 #if ENABLE(SVG)

    24 #include "SVGStyledTransformableElement.h"

    25 

    26 #include "AffineTransform.h"

    27 #include "Attr.h"

    28 #include "RenderPath.h"

    29 #include "SVGDocument.h"

    30 #include "SVGStyledElement.h"

    31 #include "SVGTransformList.h"

    32 

    33 namespace WebCore {

    34 

    35 SVGStyledTransformableElement::SVGStyledTransformableElement(const QualifiedName& tagName, Document* doc)

    36     : SVGStyledLocatableElement(tagName, doc)

    37     , SVGTransformable()

    38     , m_transform(SVGTransformList::create(SVGNames::transformAttr))

    39 {

    40 }

    41 

    42 SVGStyledTransformableElement::~SVGStyledTransformableElement()

    43 {

    44 }

    45 

    46 AffineTransform SVGStyledTransformableElement::getCTM() const

    47 {

    48     return SVGLocatable::computeCTM(this, SVGLocatable::NearestViewportScope);

    49 }

    50 

    51 AffineTransform SVGStyledTransformableElement::getScreenCTM() const

    52 {

    53     return SVGLocatable::computeCTM(this, SVGLocatable::ScreenScope);

    54 }

    55 

    56 AffineTransform SVGStyledTransformableElement::animatedLocalTransform() const

    57 {

    58     return m_supplementalTransform ? transform()->concatenate().matrix() * *m_supplementalTransform : transform()->concatenate().matrix();

    59 }

    60     

    61 AffineTransform* SVGStyledTransformableElement::supplementalTransform()

    62 {

    63     if (!m_supplementalTransform)

    64         m_supplementalTransform.set(new AffineTransform());

    65     return m_supplementalTransform.get();

    66 }

    67 

    68 void SVGStyledTransformableElement::parseMappedAttribute(Attribute* attr)

    69 {

    70     if (SVGTransformable::isKnownAttribute(attr->name())) {

    71         SVGTransformList* localTransforms = transformBaseValue();

    72         if (!SVGTransformable::parseTransformAttribute(localTransforms, attr->value())) {

    73             ExceptionCode ec = 0;

    74             localTransforms->clear(ec);

    75         }

    76     } else 

    77         SVGStyledLocatableElement::parseMappedAttribute(attr);

    78 }

    79 

    80 void SVGStyledTransformableElement::synchronizeProperty(const QualifiedName& attrName)

    81 {

    82     SVGStyledLocatableElement::synchronizeProperty(attrName);

    83 

    84     if (attrName == anyQName() || SVGTransformable::isKnownAttribute(attrName))

    85         synchronizeTransform();

    86 }

    87 

    88 bool SVGStyledTransformableElement::isKnownAttribute(const QualifiedName& attrName)

    89 {

    90     return SVGTransformable::isKnownAttribute(attrName) ||

    91            SVGStyledLocatableElement::isKnownAttribute(attrName);

    92 }

    93 

    94 SVGElement* SVGStyledTransformableElement::nearestViewportElement() const

    95 {

    96     return SVGTransformable::nearestViewportElement(this);

    97 }

    98 

    99 SVGElement* SVGStyledTransformableElement::farthestViewportElement() const

   100 {

   101     return SVGTransformable::farthestViewportElement(this);

   102 }

   103 

   104 FloatRect SVGStyledTransformableElement::getBBox() const

   105 {

   106     return SVGTransformable::getBBox(this);

   107 }

   108 

   109 RenderObject* SVGStyledTransformableElement::createRenderer(RenderArena* arena, RenderStyle*)

   110 {

   111     // By default, any subclass is expected to do path-based drawing

   112     return new (arena) RenderPath(this);

   113 }

   114 

   115 Path SVGStyledTransformableElement::toClipPath() const

   116 {

   117     Path pathData = toPathData();

   118     // FIXME: How do we know the element has done a layout?

   119     pathData.transform(animatedLocalTransform());

   120     return pathData;

   121 }

   122 

   123 }

   124 

   125 #endif // ENABLE(SVG)