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      1 /*
      2  * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann (at) kde.org>
      3  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Rob Buis <buis (at) kde.org>
      4  * Copyright (C) 2006 Alexander Kellett <lypanov (at) kde.org>
      5  *
      6  * This library is free software; you can redistribute it and/or
      7  * modify it under the terms of the GNU Library General Public
      8  * License as published by the Free Software Foundation; either
      9  * version 2 of the License, or (at your option) any later version.
     10  *
     11  * This library is distributed in the hope that it will be useful,
     12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     14  * Library General Public License for more details.
     15  *
     16  * You should have received a copy of the GNU Library General Public License
     17  * along with this library; see the file COPYING.LIB.  If not, write to
     18  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     19  * Boston, MA 02110-1301, USA.
     20  */
     21 
     22 #include "config.h"
     23 
     24 #if ENABLE(SVG)
     25 #include "SVGImageElement.h"
     26 
     27 #include "Attribute.h"
     28 #include "CSSPropertyNames.h"
     29 #include "RenderImageResource.h"
     30 #include "RenderSVGImage.h"
     31 #include "RenderSVGResource.h"
     32 #include "SVGNames.h"
     33 #include "SVGSVGElement.h"
     34 #include "XLinkNames.h"
     35 
     36 namespace WebCore {
     37 
     38 // Animated property definitions
     39 DEFINE_ANIMATED_LENGTH(SVGImageElement, SVGNames::xAttr, X, x)
     40 DEFINE_ANIMATED_LENGTH(SVGImageElement, SVGNames::yAttr, Y, y)
     41 DEFINE_ANIMATED_LENGTH(SVGImageElement, SVGNames::widthAttr, Width, width)
     42 DEFINE_ANIMATED_LENGTH(SVGImageElement, SVGNames::heightAttr, Height, height)
     43 DEFINE_ANIMATED_PRESERVEASPECTRATIO(SVGImageElement, SVGNames::preserveAspectRatioAttr, PreserveAspectRatio, preserveAspectRatio)
     44 DEFINE_ANIMATED_STRING(SVGImageElement, XLinkNames::hrefAttr, Href, href)
     45 DEFINE_ANIMATED_BOOLEAN(SVGImageElement, SVGNames::externalResourcesRequiredAttr, ExternalResourcesRequired, externalResourcesRequired)
     46 
     47 inline SVGImageElement::SVGImageElement(const QualifiedName& tagName, Document* document)
     48     : SVGStyledTransformableElement(tagName, document)
     49     , m_x(LengthModeWidth)
     50     , m_y(LengthModeHeight)
     51     , m_width(LengthModeWidth)
     52     , m_height(LengthModeHeight)
     53     , m_imageLoader(this)
     54 {
     55 }
     56 
     57 PassRefPtr<SVGImageElement> SVGImageElement::create(const QualifiedName& tagName, Document* document)
     58 {
     59     return adoptRef(new SVGImageElement(tagName, document));
     60 }
     61 
     62 void SVGImageElement::parseMappedAttribute(Attribute* attr)
     63 {
     64     if (attr->name() == SVGNames::xAttr)
     65         setXBaseValue(SVGLength(LengthModeWidth, attr->value()));
     66     else if (attr->name() == SVGNames::yAttr)
     67         setYBaseValue(SVGLength(LengthModeHeight, attr->value()));
     68     else if (attr->name() == SVGNames::preserveAspectRatioAttr)
     69         SVGPreserveAspectRatio::parsePreserveAspectRatio(this, attr->value());
     70     else if (attr->name() == SVGNames::widthAttr) {
     71         setWidthBaseValue(SVGLength(LengthModeWidth, attr->value()));
     72         addCSSProperty(attr, CSSPropertyWidth, attr->value());
     73         if (widthBaseValue().value(this) < 0.0)
     74             document()->accessSVGExtensions()->reportError("A negative value for image attribute <width> is not allowed");
     75     } else if (attr->name() == SVGNames::heightAttr) {
     76         setHeightBaseValue(SVGLength(LengthModeHeight, attr->value()));
     77         addCSSProperty(attr, CSSPropertyHeight, attr->value());
     78         if (heightBaseValue().value(this) < 0.0)
     79             document()->accessSVGExtensions()->reportError("A negative value for image attribute <height> is not allowed");
     80     } else {
     81         if (SVGTests::parseMappedAttribute(attr))
     82             return;
     83         if (SVGLangSpace::parseMappedAttribute(attr))
     84             return;
     85         if (SVGExternalResourcesRequired::parseMappedAttribute(attr))
     86             return;
     87         if (SVGURIReference::parseMappedAttribute(attr))
     88             return;
     89         SVGStyledTransformableElement::parseMappedAttribute(attr);
     90     }
     91 }
     92 
     93 void SVGImageElement::svgAttributeChanged(const QualifiedName& attrName)
     94 {
     95     SVGStyledTransformableElement::svgAttributeChanged(attrName);
     96 
     97     if (SVGURIReference::isKnownAttribute(attrName))
     98         m_imageLoader.updateFromElementIgnoringPreviousError();
     99 
    100     bool isLengthAttribute = attrName == SVGNames::xAttr
    101                           || attrName == SVGNames::yAttr
    102                           || attrName == SVGNames::widthAttr
    103                           || attrName == SVGNames::heightAttr;
    104 
    105     if (isLengthAttribute)
    106         updateRelativeLengthsInformation();
    107 
    108     if (SVGTests::handleAttributeChange(this, attrName))
    109         return;
    110 
    111     RenderObject* renderer = this->renderer();
    112     if (!renderer)
    113         return;
    114 
    115     if (isLengthAttribute) {
    116         renderer->updateFromElement();
    117         RenderSVGResource::markForLayoutAndParentResourceInvalidation(renderer, false);
    118         return;
    119     }
    120 
    121     if (attrName == SVGNames::preserveAspectRatioAttr
    122         || SVGLangSpace::isKnownAttribute(attrName)
    123         || SVGExternalResourcesRequired::isKnownAttribute(attrName))
    124         RenderSVGResource::markForLayoutAndParentResourceInvalidation(renderer);
    125 }
    126 
    127 void SVGImageElement::synchronizeProperty(const QualifiedName& attrName)
    128 {
    129     SVGStyledTransformableElement::synchronizeProperty(attrName);
    130 
    131     if (attrName == anyQName()) {
    132         synchronizeX();
    133         synchronizeY();
    134         synchronizeWidth();
    135         synchronizeHeight();
    136         synchronizePreserveAspectRatio();
    137         synchronizeExternalResourcesRequired();
    138         synchronizeHref();
    139         SVGTests::synchronizeProperties(this, attrName);
    140         return;
    141     }
    142 
    143     if (attrName == SVGNames::xAttr)
    144         synchronizeX();
    145     else if (attrName == SVGNames::yAttr)
    146         synchronizeY();
    147     else if (attrName == SVGNames::widthAttr)
    148         synchronizeWidth();
    149     else if (attrName == SVGNames::heightAttr)
    150         synchronizeHeight();
    151     else if (attrName == SVGNames::preserveAspectRatioAttr)
    152         synchronizePreserveAspectRatio();
    153     else if (SVGExternalResourcesRequired::isKnownAttribute(attrName))
    154         synchronizeExternalResourcesRequired();
    155     else if (SVGURIReference::isKnownAttribute(attrName))
    156         synchronizeHref();
    157     else if (SVGTests::isKnownAttribute(attrName))
    158         SVGTests::synchronizeProperties(this, attrName);
    159 }
    160 
    161 AttributeToPropertyTypeMap& SVGImageElement::attributeToPropertyTypeMap()
    162 {
    163     DEFINE_STATIC_LOCAL(AttributeToPropertyTypeMap, s_attributeToPropertyTypeMap, ());
    164     return s_attributeToPropertyTypeMap;
    165 }
    166 
    167 void SVGImageElement::fillAttributeToPropertyTypeMap()
    168 {
    169     AttributeToPropertyTypeMap& attributeToPropertyTypeMap = this->attributeToPropertyTypeMap();
    170 
    171     SVGStyledTransformableElement::fillPassedAttributeToPropertyTypeMap(attributeToPropertyTypeMap);
    172     attributeToPropertyTypeMap.set(SVGNames::xAttr, AnimatedLength);
    173     attributeToPropertyTypeMap.set(SVGNames::yAttr, AnimatedLength);
    174     attributeToPropertyTypeMap.set(SVGNames::widthAttr, AnimatedLength);
    175     attributeToPropertyTypeMap.set(SVGNames::heightAttr, AnimatedLength);
    176     attributeToPropertyTypeMap.set(SVGNames::preserveAspectRatioAttr, AnimatedPreserveAspectRatio);
    177     attributeToPropertyTypeMap.set(XLinkNames::hrefAttr, AnimatedString);
    178 }
    179 
    180 bool SVGImageElement::selfHasRelativeLengths() const
    181 {
    182     return x().isRelative()
    183         || y().isRelative()
    184         || width().isRelative()
    185         || height().isRelative();
    186 }
    187 
    188 RenderObject* SVGImageElement::createRenderer(RenderArena* arena, RenderStyle*)
    189 {
    190     return new (arena) RenderSVGImage(this);
    191 }
    192 
    193 bool SVGImageElement::haveLoadedRequiredResources()
    194 {
    195     return !externalResourcesRequiredBaseValue() || m_imageLoader.haveFiredLoadEvent();
    196 }
    197 
    198 void SVGImageElement::attach()
    199 {
    200     SVGStyledTransformableElement::attach();
    201 
    202     if (RenderSVGImage* imageObj = toRenderSVGImage(renderer())) {
    203         if (imageObj->imageResource()->hasImage())
    204             return;
    205 
    206         imageObj->imageResource()->setCachedImage(m_imageLoader.image());
    207     }
    208 }
    209 
    210 void SVGImageElement::insertedIntoDocument()
    211 {
    212     SVGStyledTransformableElement::insertedIntoDocument();
    213 
    214     // Update image loader, as soon as we're living in the tree.
    215     // We can only resolve base URIs properly, after that!
    216     m_imageLoader.updateFromElement();
    217 }
    218 
    219 const QualifiedName& SVGImageElement::imageSourceAttributeName() const
    220 {
    221     return XLinkNames::hrefAttr;
    222 }
    223 
    224 void SVGImageElement::addSubresourceAttributeURLs(ListHashSet<KURL>& urls) const
    225 {
    226     SVGStyledTransformableElement::addSubresourceAttributeURLs(urls);
    227 
    228     addSubresourceURL(urls, document()->completeURL(href()));
    229 }
    230 
    231 void SVGImageElement::willMoveToNewOwnerDocument()
    232 {
    233     m_imageLoader.elementWillMoveToNewOwnerDocument();
    234     SVGStyledTransformableElement::willMoveToNewOwnerDocument();
    235 }
    236 
    237 }
    238 
    239 #endif // ENABLE(SVG)
    240