WebCore/SVGInlineTextBox.h

   1 /*
   2  * This file is part of the DOM implementation for KDE.
   3  *
   4  * Copyright (C) 2007 Rob Buis <buis@kde.org>
   5  *           (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Library General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Library General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Library General Public License
  18  * along with this library; see the file COPYING.LIB.  If not, write to
  19  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  20  * Boston, MA 02110-1301, USA.
  21  *
  22  */
  23
  24 #ifndef SVGInlineTextBox_h
  25 #define SVGInlineTextBox_h
  26
  27 #if ENABLE(SVG)
  28 #include "InlineTextBox.h"
  29
  30 namespace WebCore {
  31
  32     class SVGChar;
  33     class SVGRootInlineBox;
  34     class SVGTextDecorationInfo;
  35
  36     class SVGInlineTextBox : public InlineTextBox {
  37     public:
  38         SVGInlineTextBox(RenderObject* obj);
  39
  40         virtual int selectionTop();
  41         virtual int selectionHeight();
  42
  43         virtual int offsetForPosition(int x, bool includePartialGlyphs = true) const;
  44         virtual int positionForOffset(int offset) const;
  45
  46         virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, int x, int y, int tx, int ty);
  47         virtual IntRect selectionRect(int absx, int absy, int startPos, int endPos);
  48
  49         // SVGs custom paint text method
  50         void paintCharacters(RenderObject::PaintInfo&, int tx, int ty, const SVGChar&, const UChar* chars, int length, SVGPaintServer*);
  51
  52         // SVGs custom paint selection method
  53         void paintSelection(int boxStartOffset, const SVGChar&, const UChar*, int length, GraphicsContext*, RenderStyle*, const Font&);
  54
  55         // SVGs custom paint decoration method
  56         void paintDecoration(ETextDecoration, GraphicsContext*, int tx, int ty, int width, const SVGChar&, const SVGTextDecorationInfo&);
  57
  58         SVGRootInlineBox* svgRootInlineBox() const;
  59
  60         // Helper functions shared with SVGRootInlineBox
  61         float calculateGlyphWidth(RenderStyle* style, int offset, int extraCharsAvailable, int& charsConsumed, String& glyphName) const;
  62         float calculateGlyphHeight(RenderStyle*, int offset, int extraCharsAvailable) const;
  63
  64         FloatRect calculateGlyphBoundaries(RenderStyle*, int offset, const SVGChar&) const;
  65         SVGChar* closestCharacterToPosition(int x, int y, int& offset) const;
  66
  67     private:
  68         friend class RenderSVGInlineText;
  69         bool svgCharacterHitsPosition(int x, int y, int& offset) const;
  70     };
  71
  72 } // namespace WebCore
  73
  74 #endif
  75 #endif // SVGInlineTextBox_h