1/*
2 * Copyright (C) 2007 Rob Buis <buis@kde.org>
3 * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
4 * Copyright (C) Research In Motion Limited 2010. All rights reserved.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 * Library General Public License for more details.
15 *
16 * You should have received a copy of the GNU Library General Public License
17 * along with this library; see the file COPYING.LIB.  If not, write to
18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
20 */
21
22#ifndef SVGInlineTextBox_h
23#define SVGInlineTextBox_h
24
25#if ENABLE(SVG)
26#include "InlineTextBox.h"
27#include "SVGTextLayoutEngine.h"
28
29namespace WebCore {
30
31class RenderSVGResource;
32class SVGRootInlineBox;
33
34class SVGInlineTextBox : public InlineTextBox {
35public:
36    SVGInlineTextBox(RenderObject*);
37
38    virtual bool isSVGInlineTextBox() const { return true; }
39
40    virtual int virtualLogicalHeight() const { return m_logicalHeight; }
41    void setLogicalHeight(int height) { m_logicalHeight = height; }
42
43    virtual int selectionTop() { return m_y; }
44    virtual int selectionHeight() { return m_logicalHeight; }
45    virtual int offsetForPosition(float x, bool includePartialGlyphs = true) const;
46    virtual float positionForOffset(int offset) const;
47
48    void paintSelectionBackground(PaintInfo&);
49    virtual void paint(PaintInfo&, int tx, int ty, int lineTop, int lineBottom);
50    virtual IntRect selectionRect(int absx, int absy, int startPosition, int endPosition);
51
52    bool mapStartEndPositionsIntoFragmentCoordinates(const SVGTextFragment&, int& startPosition, int& endPosition) const;
53
54    virtual IntRect calculateBoundaries() const;
55
56    void clearTextFragments() { m_textFragments.clear(); }
57    Vector<SVGTextFragment>& textFragments() { return m_textFragments; }
58    const Vector<SVGTextFragment>& textFragments() const { return m_textFragments; }
59
60    bool startsNewTextChunk() const { return m_startsNewTextChunk; }
61    void setStartsNewTextChunk(bool newTextChunk) { m_startsNewTextChunk = newTextChunk; }
62
63    int offsetForPositionInFragment(const SVGTextFragment&, float position, bool includePartialGlyphs) const;
64    FloatRect selectionRectForTextFragment(const SVGTextFragment&, int fragmentStartPosition, int fragmentEndPosition, RenderStyle*);
65
66private:
67    TextRun constructTextRun(RenderStyle*, const SVGTextFragment&) const;
68
69    bool acquirePaintingResource(GraphicsContext*&, float scalingFactor, RenderObject*, RenderStyle*);
70    void releasePaintingResource(GraphicsContext*&, const Path*);
71
72    bool prepareGraphicsContextForTextPainting(GraphicsContext*&, float scalingFactor, TextRun&, RenderStyle*);
73    void restoreGraphicsContextAfterTextPainting(GraphicsContext*&, TextRun&);
74
75    void paintDecoration(GraphicsContext*, ETextDecoration, const SVGTextFragment&);
76    void paintDecorationWithStyle(GraphicsContext*, ETextDecoration, const SVGTextFragment&, RenderObject* decorationRenderer);
77    void paintTextWithShadows(GraphicsContext*, RenderStyle*, TextRun&, const SVGTextFragment&, int startPosition, int endPosition);
78    void paintText(GraphicsContext*, RenderStyle*, RenderStyle* selectionStyle, const SVGTextFragment&, bool hasSelection, bool paintSelectedTextOnly);
79
80private:
81    int m_logicalHeight;
82    int m_paintingResourceMode;
83    bool m_startsNewTextChunk : 1;
84    RenderSVGResource* m_paintingResource;
85    Vector<SVGTextFragment> m_textFragments;
86};
87
88} // namespace WebCore
89
90#endif
91#endif // SVGInlineTextBox_h
92