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      1 /*
      2  * Copyright (C) 2004, 2005, 2007, 2008 Nikolas Zimmermann <zimmermann (at) kde.org>
      3  * Copyright (C) 2004, 2005, 2006, 2008 Rob Buis <buis (at) 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 #include "core/svg/SVGTextElement.h"
     24 
     25 #include "SVGNames.h"
     26 #include "core/dom/NodeRenderingContext.h"
     27 #include "core/rendering/svg/RenderSVGResource.h"
     28 #include "core/rendering/svg/RenderSVGText.h"
     29 #include "core/svg/SVGElementInstance.h"
     30 
     31 namespace WebCore {
     32 
     33 inline SVGTextElement::SVGTextElement(const QualifiedName& tagName, Document* doc)
     34     : SVGTextPositioningElement(tagName, doc)
     35 {
     36     ASSERT(hasTagName(SVGNames::textTag));
     37     ScriptWrappable::init(this);
     38 }
     39 
     40 PassRefPtr<SVGTextElement> SVGTextElement::create(const QualifiedName& tagName, Document* document)
     41 {
     42     return adoptRef(new SVGTextElement(tagName, document));
     43 }
     44 
     45 // We override SVGGraphics::animatedLocalTransform() so that the transform-origin
     46 // is not taken into account.
     47 AffineTransform SVGTextElement::animatedLocalTransform() const
     48 {
     49     AffineTransform matrix;
     50     RenderStyle* style = renderer() ? renderer()->style() : 0;
     51 
     52     // if CSS property was set, use that, otherwise fallback to attribute (if set)
     53     if (style && style->hasTransform()) {
     54         TransformationMatrix t;
     55         // For now, the transform-origin is not taken into account
     56         // Also, any percentage values will not be taken into account
     57         style->applyTransform(t, IntSize(0, 0), RenderStyle::ExcludeTransformOrigin);
     58         // Flatten any 3D transform
     59         matrix = t.toAffineTransform();
     60     } else {
     61         transformCurrentValue().concatenate(matrix);
     62     }
     63 
     64     const AffineTransform* transform = const_cast<SVGTextElement*>(this)->supplementalTransform();
     65     if (transform)
     66         return *transform * matrix;
     67     return matrix;
     68 }
     69 
     70 RenderObject* SVGTextElement::createRenderer(RenderStyle*)
     71 {
     72     return new RenderSVGText(this);
     73 }
     74 
     75 bool SVGTextElement::childShouldCreateRenderer(const NodeRenderingContext& childContext) const
     76 {
     77     if (childContext.node()->isTextNode()
     78         || childContext.node()->hasTagName(SVGNames::aTag)
     79 #if ENABLE(SVG_FONTS)
     80         || childContext.node()->hasTagName(SVGNames::altGlyphTag)
     81 #endif
     82         || childContext.node()->hasTagName(SVGNames::textPathTag)
     83         || childContext.node()->hasTagName(SVGNames::trefTag)
     84         || childContext.node()->hasTagName(SVGNames::tspanTag))
     85         return true;
     86 
     87     return false;
     88 }
     89 
     90 }
     91