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/*
* Copyright (C) 2007 Eric Seidel <eric@webkit.org>
* Copyright (C) 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2008 Rob Buis <buis@kde.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#if ENABLE(SVG_FONTS)
#include "SVGGlyphElement.h"
#include "Attribute.h"
#include "SVGFontData.h"
#include "SVGFontElement.h"
#include "SVGFontFaceElement.h"
#include "SVGNames.h"
#include "SVGPathParserFactory.h"
#include "SimpleFontData.h"
#include "XMLNames.h"
namespace WebCore {
using namespace SVGNames;
inline SVGGlyphElement::SVGGlyphElement(const QualifiedName& tagName, Document* document)
: SVGStyledElement(tagName, document)
{
}
PassRefPtr<SVGGlyphElement> SVGGlyphElement::create(const QualifiedName& tagName, Document* document)
{
return adoptRef(new SVGGlyphElement(tagName, document));
}
void SVGGlyphElement::invalidateGlyphCache()
{
ContainerNode* fontNode = parentNode();
if (fontNode && fontNode->hasTagName(SVGNames::fontTag)) {
if (SVGFontElement* element = static_cast<SVGFontElement*>(fontNode))
element->invalidateGlyphCache();
}
}
void SVGGlyphElement::parseMappedAttribute(Attribute* attr)
{
if (attr->name() == SVGNames::dAttr)
invalidateGlyphCache();
else
SVGStyledElement::parseMappedAttribute(attr);
}
void SVGGlyphElement::insertedIntoDocument()
{
invalidateGlyphCache();
SVGStyledElement::insertedIntoDocument();
}
void SVGGlyphElement::removedFromDocument()
{
invalidateGlyphCache();
SVGStyledElement::removedFromDocument();
}
static inline SVGGlyphIdentifier::ArabicForm parseArabicForm(const AtomicString& value)
{
if (value == "medial")
return SVGGlyphIdentifier::Medial;
else if (value == "terminal")
return SVGGlyphIdentifier::Terminal;
else if (value == "isolated")
return SVGGlyphIdentifier::Isolated;
else if (value == "initial")
return SVGGlyphIdentifier::Initial;
return SVGGlyphIdentifier::None;
}
static inline SVGGlyphIdentifier::Orientation parseOrientation(const AtomicString& value)
{
if (value == "h")
return SVGGlyphIdentifier::Horizontal;
else if (value == "v")
return SVGGlyphIdentifier::Vertical;
return SVGGlyphIdentifier::Both;
}
static inline Path parsePathData(const AtomicString& value)
{
Path result;
SVGPathParserFactory* factory = SVGPathParserFactory::self();
factory->buildPathFromString(value, result);
return result;
}
void SVGGlyphElement::inheritUnspecifiedAttributes(SVGGlyphIdentifier& identifier, const SVGFontData* svgFontData)
{
if (identifier.horizontalAdvanceX == SVGGlyphIdentifier::inheritedValue())
identifier.horizontalAdvanceX = svgFontData->horizontalAdvanceX();
if (identifier.verticalOriginX == SVGGlyphIdentifier::inheritedValue())
identifier.verticalOriginX = svgFontData->verticalOriginX();
if (identifier.verticalOriginY == SVGGlyphIdentifier::inheritedValue())
identifier.verticalOriginY = svgFontData->verticalOriginY();
if (identifier.verticalAdvanceY == SVGGlyphIdentifier::inheritedValue())
identifier.verticalAdvanceY = svgFontData->verticalAdvanceY();
}
static inline float parseSVGGlyphAttribute(const SVGElement* element, const WebCore::QualifiedName& name)
{
AtomicString value(element->getAttribute(name));
if (value.isEmpty())
return SVGGlyphIdentifier::inheritedValue();
return value.toFloat();
}
SVGGlyphIdentifier SVGGlyphElement::buildGenericGlyphIdentifier(const SVGElement* element)
{
SVGGlyphIdentifier identifier;
identifier.pathData = parsePathData(element->getAttribute(dAttr));
// Spec: The horizontal advance after rendering the glyph in horizontal orientation.
// If the attribute is not specified, the effect is as if the attribute were set to the
// value of the font's horiz-adv-x attribute. Glyph widths are required to be non-negative,
// even if the glyph is typically rendered right-to-left, as in Hebrew and Arabic scripts.
identifier.horizontalAdvanceX = parseSVGGlyphAttribute(element, horiz_adv_xAttr);
// Spec: The X-coordinate in the font coordinate system of the origin of the glyph to be
// used when drawing vertically oriented text. If the attribute is not specified, the effect
// is as if the attribute were set to the value of the font's vert-origin-x attribute.
identifier.verticalOriginX = parseSVGGlyphAttribute(element, vert_origin_xAttr);
// Spec: The Y-coordinate in the font coordinate system of the origin of a glyph to be
// used when drawing vertically oriented text. If the attribute is not specified, the effect
// is as if the attribute were set to the value of the font's vert-origin-y attribute.
identifier.verticalOriginY = parseSVGGlyphAttribute(element, vert_origin_yAttr);
// Spec: The vertical advance after rendering a glyph in vertical orientation.
// If the attribute is not specified, the effect is as if the attribute were set to the
// value of the font's vert-adv-y attribute.
identifier.verticalAdvanceY = parseSVGGlyphAttribute(element, vert_adv_yAttr);
return identifier;
}
SVGGlyphIdentifier SVGGlyphElement::buildGlyphIdentifier() const
{
SVGGlyphIdentifier identifier(buildGenericGlyphIdentifier(this));
identifier.glyphName = getAttribute(glyph_nameAttr);
identifier.orientation = parseOrientation(getAttribute(orientationAttr));
identifier.arabicForm = parseArabicForm(getAttribute(arabic_formAttr));
String language = getAttribute(SVGNames::langAttr);
if (!language.isEmpty())
identifier.languages = parseDelimitedString(language, ',');
return identifier;
}
}
#endif // ENABLE(SVG_FONTS)
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