/*

    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 SVGRenderStyle;

class TextRun;

struct SVGChar;

struct SVGCharacterLayoutInfo;

struct SVGInlineBoxCharacterRange;

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 calculateCSSKerning(const RenderStyle*);

bool applySVGKerning(SVGCharacterLayoutInfo&, const RenderStyle*, SVGLastGlyphInfo&, const String& unicodeString, const String& glyphName, bool isVerticalText);

}

#endif

#endif