Source/WebCore/svg/SVGLineElement.cpp

   1 /*
   2  * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
   3  * Copyright (C) 2004, 2005, 2006, 2007 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 "SVGLineElement.h"
  25
  26 #include "Attribute.h"
  27 #include "FloatPoint.h"
  28 #include "RenderSVGPath.h"
  29 #include "RenderSVGResource.h"
  30 #include "SVGElementInstance.h"
  31 #include "SVGLength.h"
  32 #include "SVGNames.h"
  33
  34 namespace WebCore {
  35
  36 // Animated property definitions
  37 DEFINE_ANIMATED_LENGTH(SVGLineElement, SVGNames::x1Attr, X1, x1)
  38 DEFINE_ANIMATED_LENGTH(SVGLineElement, SVGNames::y1Attr, Y1, y1)
  39 DEFINE_ANIMATED_LENGTH(SVGLineElement, SVGNames::x2Attr, X2, x2)
  40 DEFINE_ANIMATED_LENGTH(SVGLineElement, SVGNames::y2Attr, Y2, y2)
  41 DEFINE_ANIMATED_BOOLEAN(SVGLineElement, SVGNames::externalResourcesRequiredAttr, ExternalResourcesRequired, externalResourcesRequired)
  42
  43 BEGIN_REGISTER_ANIMATED_PROPERTIES(SVGLineElement)
  44     REGISTER_LOCAL_ANIMATED_PROPERTY(x1)
  45     REGISTER_LOCAL_ANIMATED_PROPERTY(y1)
  46     REGISTER_LOCAL_ANIMATED_PROPERTY(x2)
  47     REGISTER_LOCAL_ANIMATED_PROPERTY(y2)
  48     REGISTER_LOCAL_ANIMATED_PROPERTY(externalResourcesRequired)
  49     REGISTER_PARENT_ANIMATED_PROPERTIES(SVGStyledTransformableElement)
  50     REGISTER_PARENT_ANIMATED_PROPERTIES(SVGTests)
  51 END_REGISTER_ANIMATED_PROPERTIES
  52
  53 inline SVGLineElement::SVGLineElement(const QualifiedName& tagName, Document* document)
  54     : SVGStyledTransformableElement(tagName, document)
  55     , m_x1(LengthModeWidth)
  56     , m_y1(LengthModeHeight)
  57     , m_x2(LengthModeWidth)
  58     , m_y2(LengthModeHeight)
  59 {
  60     ASSERT(hasTagName(SVGNames::lineTag));
  61     registerAnimatedPropertiesForSVGLineElement();
  62 }
  63
  64 PassRefPtr<SVGLineElement> SVGLineElement::create(const QualifiedName& tagName, Document* document)
  65 {
  66     return adoptRef(new SVGLineElement(tagName, document));
  67 }
  68
  69 bool SVGLineElement::isSupportedAttribute(const QualifiedName& attrName)
  70 {
  71     DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
  72     if (supportedAttributes.isEmpty()) {
  73         SVGTests::addSupportedAttributes(supportedAttributes);
  74         SVGLangSpace::addSupportedAttributes(supportedAttributes);
  75         SVGExternalResourcesRequired::addSupportedAttributes(supportedAttributes);
  76         supportedAttributes.add(SVGNames::x1Attr);
  77         supportedAttributes.add(SVGNames::x2Attr);
  78         supportedAttributes.add(SVGNames::y1Attr);
  79         supportedAttributes.add(SVGNames::y2Attr);
  80     }
  81     return supportedAttributes.contains<QualifiedName, SVGAttributeHashTranslator>(attrName);
  82 }
  83
  84 void SVGLineElement::parseMappedAttribute(Attribute* attr)
  85 {
  86     SVGParsingError parseError = NoError;
  87
  88     if (!isSupportedAttribute(attr->name()))
  89         SVGStyledTransformableElement::parseMappedAttribute(attr);
  90     else if (attr->name() == SVGNames::x1Attr)
  91         setX1BaseValue(SVGLength::construct(LengthModeWidth, attr->value(), parseError));
  92     else if (attr->name() == SVGNames::y1Attr)
  93         setY1BaseValue(SVGLength::construct(LengthModeHeight, attr->value(), parseError));
  94     else if (attr->name() == SVGNames::x2Attr)
  95         setX2BaseValue(SVGLength::construct(LengthModeWidth, attr->value(), parseError));
  96     else if (attr->name() == SVGNames::y2Attr)
  97         setY2BaseValue(SVGLength::construct(LengthModeHeight, attr->value(), parseError));
  98     else if (SVGTests::parseMappedAttribute(attr)
  99              || SVGLangSpace::parseMappedAttribute(attr)
 100              || SVGExternalResourcesRequired::parseMappedAttribute(attr)) {
 101     } else
 102         ASSERT_NOT_REACHED();
 103
 104     reportAttributeParsingError(parseError, attr);
 105 }
 106
 107 void SVGLineElement::svgAttributeChanged(const QualifiedName& attrName)
 108 {
 109     if (!isSupportedAttribute(attrName)) {
 110         SVGStyledTransformableElement::svgAttributeChanged(attrName);
 111         return;
 112     }
 113
 114     SVGElementInstance::InvalidationGuard invalidationGuard(this);
 115
 116     bool isLengthAttribute = attrName == SVGNames::x1Attr
 117                           || attrName == SVGNames::y1Attr
 118                           || attrName == SVGNames::x2Attr
 119                           || attrName == SVGNames::y2Attr;
 120
 121     if (isLengthAttribute)
 122         updateRelativeLengthsInformation();
 123
 124     if (SVGTests::handleAttributeChange(this, attrName))
 125         return;
 126
 127     RenderSVGPath* renderer = static_cast<RenderSVGPath*>(this->renderer());
 128     if (!renderer)
 129         return;
 130
 131     if (isLengthAttribute) {
 132         renderer->setNeedsShapeUpdate();
 133         RenderSVGResource::markForLayoutAndParentResourceInvalidation(renderer);
 134         return;
 135     }
 136
 137     if (SVGLangSpace::isKnownAttribute(attrName) || SVGExternalResourcesRequired::isKnownAttribute(attrName)) {
 138         RenderSVGResource::markForLayoutAndParentResourceInvalidation(renderer);
 139         return;
 140     }
 141
 142     ASSERT_NOT_REACHED();
 143 }
 144
 145 bool SVGLineElement::selfHasRelativeLengths() const
 146 {
 147     return x1().isRelative()
 148         || y1().isRelative()
 149         || x2().isRelative()
 150         || y2().isRelative();
 151 }
 152
 153 }
 154
 155 #endif // ENABLE(SVG)