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/*
* Copyright (C) 2007 Eric Seidel <eric@webkit.org>
* Copyright (C) 2007 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.
*/
#ifndef SVGGlyphElement_h
#define SVGGlyphElement_h
#if ENABLE(SVG_FONTS)
#include "Path.h"
#include "SVGStyledElement.h"
#include <limits>
#include <wtf/Forward.h>
namespace WebCore {
class SVGFontData;
// Describe a SVG <glyph> element
struct SVGGlyphIdentifier {
enum Orientation {
Vertical,
Horizontal,
Both
};
// SVG Font depends on exactly this order.
enum ArabicForm {
None = 0,
Isolated,
Terminal,
Initial,
Medial
};
SVGGlyphIdentifier()
: isValid(false)
, orientation(Both)
, arabicForm(None)
, priority(0)
, nameLength(0)
, horizontalAdvanceX(0.0f)
, verticalOriginX(0.0f)
, verticalOriginY(0.0f)
, verticalAdvanceY(0.0f)
{
}
// Used to mark our float properties as "to be inherited from SVGFontData"
static float inheritedValue()
{
static float s_inheritedValue = std::numeric_limits<float>::infinity();
return s_inheritedValue;
}
bool operator==(const SVGGlyphIdentifier& other) const
{
return isValid == other.isValid
&& orientation == other.orientation
&& arabicForm == other.arabicForm
&& glyphName == other.glyphName
&& horizontalAdvanceX == other.horizontalAdvanceX
&& verticalOriginX == other.verticalOriginX
&& verticalOriginY == other.verticalOriginY
&& verticalAdvanceY == other.verticalAdvanceY
&& languages == other.languages;
}
bool isValid : 1;
unsigned orientation : 2; // Orientation
unsigned arabicForm : 3; // ArabicForm
int priority;
size_t nameLength;
String glyphName;
float horizontalAdvanceX;
float verticalOriginX;
float verticalOriginY;
float verticalAdvanceY;
Path pathData;
Vector<String> languages;
};
class SVGGlyphElement : public SVGStyledElement {
public:
static PassRefPtr<SVGGlyphElement> create(const QualifiedName&, Document*);
SVGGlyphIdentifier buildGlyphIdentifier() const;
// Helper function used by SVGFont
static void inheritUnspecifiedAttributes(SVGGlyphIdentifier&, const SVGFontData*);
static String querySVGFontLanguage(const SVGElement*);
// Helper function shared between SVGGlyphElement & SVGMissingGlyphElement
static SVGGlyphIdentifier buildGenericGlyphIdentifier(const SVGElement*);
private:
SVGGlyphElement(const QualifiedName&, Document*);
virtual void parseMappedAttribute(Attribute*);
virtual void fillAttributeToPropertyTypeMap();
virtual AttributeToPropertyTypeMap& attributeToPropertyTypeMap();
virtual void insertedIntoDocument();
virtual void removedFromDocument();
virtual bool rendererIsNeeded(RenderStyle*) { return false; }
void invalidateGlyphCache();
};
} // namespace WebCore
#endif // ENABLE(SVG_FONTS)
#endif
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