khtml/svg/SVGImageElement.cpp

   1 /*
   2     Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
   3                   2004, 2005, 2006, 2007, 2008 Rob Buis <buis@kde.org>
   4                   2006 Alexander Kellett <lypanov@kde.org>
   5
   6     This file is part of the KDE project
   7
   8     This library is free software; you can redistribute it and/or
   9     modify it under the terms of the GNU Library General Public
  10     License as published by the Free Software Foundation; either
  11     version 2 of the License, or (at your option) any later version.
  12
  13     This library is distributed in the hope that it will be useful,
  14     but WITHOUT ANY WARRANTY; without even the implied warranty of
  15     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16     Library General Public License for more details.
  17
  18     You should have received a copy of the GNU Library General Public License
  19     along with this library; see the file COPYING.LIB.  If not, write to
  20     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  21     Boston, MA 02110-1301, USA.
  22 */
  23
  24 #include "config.h"
  25
  26 #if ENABLE(SVG)
  27 #include "SVGImageElement.h"
  28
  29 #include "CSSPropertyNames.h"
  30 #include "RenderSVGImage.h"
  31 #include "SVGDocument.h"
  32 #include "SVGLength.h"
  33 #include "SVGNames.h"
  34 #include "SVGPreserveAspectRatio.h"
  35 #include "SVGSVGElement.h"
  36 #include "XLinkNames.h"
  37
  38 namespace WebCore {
  39
  40 SVGImageElement::SVGImageElement(const QualifiedName& tagName, Document* doc)
  41     : SVGStyledTransformableElement(tagName, doc)
  42     , SVGTests()
  43     , SVGLangSpace()
  44     , SVGExternalResourcesRequired()
  45     , SVGURIReference()
  46     , m_x(this, LengthModeWidth)
  47     , m_y(this, LengthModeHeight)
  48     , m_width(this, LengthModeWidth)
  49     , m_height(this, LengthModeHeight)
  50     , m_preserveAspectRatio(SVGPreserveAspectRatio::create())
  51     , m_imageLoader(this)
  52 {
  53 }
  54
  55 SVGImageElement::~SVGImageElement()
  56 {
  57 }
  58
  59 ANIMATED_PROPERTY_DEFINITIONS(SVGImageElement, SVGLength, Length, length, X, x, SVGNames::xAttr, m_x)
  60 ANIMATED_PROPERTY_DEFINITIONS(SVGImageElement, SVGLength, Length, length, Y, y, SVGNames::yAttr, m_y)
  61 ANIMATED_PROPERTY_DEFINITIONS(SVGImageElement, SVGLength, Length, length, Width, width, SVGNames::widthAttr, m_width)
  62 ANIMATED_PROPERTY_DEFINITIONS(SVGImageElement, SVGLength, Length, length, Height, height, SVGNames::heightAttr, m_height)
  63 ANIMATED_PROPERTY_DEFINITIONS(SVGImageElement, SVGPreserveAspectRatio*, PreserveAspectRatio, preserveAspectRatio, PreserveAspectRatio, preserveAspectRatio, SVGNames::preserveAspectRatioAttr, m_preserveAspectRatio.get())
  64
  65 void SVGImageElement::parseMappedAttribute(MappedAttribute *attr)
  66 {
  67     if (attr->name() == SVGNames::xAttr)
  68         setXBaseValue(SVGLength(this, LengthModeWidth, attr->value()));
  69     else if (attr->name() == SVGNames::yAttr)
  70         setYBaseValue(SVGLength(this, LengthModeHeight, attr->value()));
  71     else if (attr->name() == SVGNames::preserveAspectRatioAttr) {
  72         const UChar* c = attr->value().characters();
  73         const UChar* end = c + attr->value().length();
  74         preserveAspectRatioBaseValue()->parsePreserveAspectRatio(c, end);
  75     } else if (attr->name() == SVGNames::widthAttr) {
  76         setWidthBaseValue(SVGLength(this, LengthModeWidth, attr->value()));
  77         addCSSProperty(attr, CSSPropertyWidth, attr->value());
  78         if (width().value() < 0.0)
  79             document()->accessSVGExtensions()->reportError("A negative value for image attribute <width> is not allowed");
  80     } else if (attr->name() == SVGNames::heightAttr) {
  81         setHeightBaseValue(SVGLength(this, LengthModeHeight, attr->value()));
  82         addCSSProperty(attr, CSSPropertyHeight, attr->value());
  83         if (height().value() < 0.0)
  84             document()->accessSVGExtensions()->reportError("A negative value for image attribute <height> is not allowed");
  85     } else {
  86         if (SVGTests::parseMappedAttribute(attr))
  87             return;
  88         if (SVGLangSpace::parseMappedAttribute(attr))
  89             return;
  90         if (SVGExternalResourcesRequired::parseMappedAttribute(attr))
  91             return;
  92         if (SVGURIReference::parseMappedAttribute(attr))
  93             return;
  94         SVGStyledTransformableElement::parseMappedAttribute(attr);
  95     }
  96 }
  97
  98 void SVGImageElement::svgAttributeChanged(const QualifiedName& attrName)
  99 {
 100     SVGStyledTransformableElement::svgAttributeChanged(attrName);
 101
 102     if (!renderer())
 103         return;
 104
 105     bool isURIAttribute = SVGURIReference::isKnownAttribute(attrName);
 106
 107     if (attrName == SVGNames::xAttr || attrName == SVGNames::yAttr ||
 108         attrName == SVGNames::widthAttr || attrName == SVGNames::heightAttr ||
 109         SVGTests::isKnownAttribute(attrName) ||
 110         SVGLangSpace::isKnownAttribute(attrName) ||
 111         SVGExternalResourcesRequired::isKnownAttribute(attrName) ||
 112         isURIAttribute ||
 113         SVGStyledTransformableElement::isKnownAttribute(attrName)) {
 114         renderer()->setNeedsLayout(true);
 115
 116         if (isURIAttribute)
 117             m_imageLoader.updateFromElement();
 118     }
 119 }
 120
 121 bool SVGImageElement::hasRelativeValues() const
 122 {
 123     return (x().isRelative() || width().isRelative() ||
 124             y().isRelative() || height().isRelative());
 125 }
 126
 127 RenderObject* SVGImageElement::createRenderer(RenderArena* arena, RenderStyle* style)
 128 {
 129     return new (arena) RenderSVGImage(this);
 130 }
 131
 132 bool SVGImageElement::haveLoadedRequiredResources()
 133 {
 134     return !externalResourcesRequiredBaseValue() || m_imageLoader.haveFiredLoadEvent();
 135 }
 136
 137 void SVGImageElement::attach()
 138 {
 139     SVGStyledTransformableElement::attach();
 140     m_imageLoader.updateFromElement();
 141     if (RenderSVGImage* imageObj = static_cast<RenderSVGImage*>(renderer()))
 142         imageObj->setCachedImage(m_imageLoader.image());
 143 }
 144
 145 void SVGImageElement::getSubresourceAttributeStrings(Vector<String>& urls) const
 146 {
 147     urls.append(href());
 148 }
 149
 150 }
 151
 152 #endif // ENABLE(SVG)