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/*
Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
Copyright (C) Research In Motion Limited 2010. All rights reserved.
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 SVGTextLayoutUtilities_h
#define SVGTextLayoutUtilities_h
#if ENABLE(SVG)
#include <wtf/Vector.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
class FloatPoint;
class Font;
class InlineTextBox;
class RenderObject;
class RenderStyle;
class RenderSVGResource;
class SVGRenderStyle;
class TextRun;
struct SVGChar;
struct SVGCharacterLayoutInfo;
struct SVGInlineBoxCharacterRange;
enum SVGTextPaintSubphase {
SVGTextPaintSubphaseBackground,
SVGTextPaintSubphaseGlyphFill,
SVGTextPaintSubphaseGlyphFillSelection,
SVGTextPaintSubphaseGlyphStroke,
SVGTextPaintSubphaseGlyphStrokeSelection,
SVGTextPaintSubphaseForeground
};
struct SVGTextPaintInfo {
SVGTextPaintInfo()
: activePaintingResource(0)
, subphase(SVGTextPaintSubphaseBackground)
{
}
RenderSVGResource* activePaintingResource;
SVGTextPaintSubphase subphase;
};
struct SVGLastGlyphInfo {
SVGLastGlyphInfo()
: isValid(false)
{
}
bool isValid;
String unicode;
String glyphName;
};
bool isVerticalWritingMode(const SVGRenderStyle*);
float alignmentBaselineToShift(bool isVerticalText, const RenderObject* text, const Font&);
float glyphOrientationToAngle(const SVGRenderStyle*, bool isVerticalText, const UChar&);
float applyGlyphAdvanceAndShiftRespectingOrientation(bool isVerticalText, float orientationAngle, float glyphWidth, float glyphHeight, const Font&,
SVGChar&, float& xOrientationShift, float& yOrientationShift);
FloatPoint topLeftPositionOfCharacterRange(Vector<SVGChar>::iterator start, Vector<SVGChar>::iterator end);
float cummulatedWidthOfInlineBoxCharacterRange(SVGInlineBoxCharacterRange&);
float cummulatedHeightOfInlineBoxCharacterRange(SVGInlineBoxCharacterRange&);
TextRun svgTextRunForInlineTextBox(const UChar*, int length, const RenderStyle*, const InlineTextBox*, float xPos);
float calculateCSSKerning(const RenderStyle*);
bool applySVGKerning(SVGCharacterLayoutInfo&, const RenderStyle*, SVGLastGlyphInfo&, const String& unicodeString, const String& glyphName, bool isVerticalText);
}
#endif
#endif
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