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#include "core/rendering/InlineTextBox.h"
26#include "core/rendering/svg/RenderSVGResource.h"
27#include "core/rendering/svg/SVGTextLayoutEngine.h"
28
29namespace blink {
30
31class SVGInlineTextBox FINAL : public InlineTextBox {
32public:
33    SVGInlineTextBox(RenderObject&);
34
35    virtual bool isSVGInlineTextBox() const OVERRIDE { return true; }
36
37    virtual float virtualLogicalHeight() const OVERRIDE { return m_logicalHeight; }
38    void setLogicalHeight(float height) { m_logicalHeight = height; }
39
40    virtual int offsetForPosition(float x, bool includePartialGlyphs = true) const OVERRIDE;
41    virtual float positionForOffset(int offset) const OVERRIDE;
42
43    void paintSelectionBackground(PaintInfo&);
44    virtual void paint(PaintInfo&, const LayoutPoint&, LayoutUnit lineTop, LayoutUnit lineBottom) OVERRIDE;
45    virtual LayoutRect localSelectionRect(int startPosition, int endPosition) OVERRIDE;
46
47    bool mapStartEndPositionsIntoFragmentCoordinates(const SVGTextFragment&, int& startPosition, int& endPosition) const;
48
49    virtual FloatRect calculateBoundaries() const OVERRIDE;
50
51    void clearTextFragments() { m_textFragments.clear(); }
52    Vector<SVGTextFragment>& textFragments() { return m_textFragments; }
53    const Vector<SVGTextFragment>& textFragments() const { return m_textFragments; }
54
55    virtual void dirtyLineBoxes() OVERRIDE;
56
57    bool startsNewTextChunk() const { return m_startsNewTextChunk; }
58    void setStartsNewTextChunk(bool newTextChunk) { m_startsNewTextChunk = newTextChunk; }
59
60    int offsetForPositionInFragment(const SVGTextFragment&, float position, bool includePartialGlyphs) const;
61    FloatRect selectionRectForTextFragment(const SVGTextFragment&, int fragmentStartPosition, int fragmentEndPosition, RenderStyle*);
62
63private:
64    TextRun constructTextRun(RenderStyle*, const SVGTextFragment&) const;
65
66    void paintDecoration(GraphicsContext*, TextDecoration, const SVGTextFragment&);
67    void paintDecorationWithStyle(GraphicsContext*, TextDecoration, const SVGTextFragment&,
68        RenderObject* decorationRenderer, RenderSVGResourceModeFlags);
69    void paintTextWithShadows(GraphicsContext*, RenderStyle*, TextRun&, const SVGTextFragment&,
70        int startPosition, int endPosition, RenderSVGResourceModeFlags);
71    void paintText(GraphicsContext*, RenderStyle*, RenderStyle* selectionStyle, const SVGTextFragment&,
72        RenderSVGResourceModeFlags, bool hasSelection, bool paintSelectedTextOnly);
73
74    virtual void paintDocumentMarker(GraphicsContext*, const FloatPoint&, DocumentMarker*, RenderStyle*, const Font&, bool) OVERRIDE FINAL;
75    virtual void paintTextMatchMarker(GraphicsContext*, const FloatPoint&, DocumentMarker*, RenderStyle*, const Font&) OVERRIDE FINAL;
76
77    virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, LayoutUnit lineTop, LayoutUnit lineBottom) OVERRIDE;
78
79private:
80    float m_logicalHeight;
81    bool m_startsNewTextChunk : 1;
82    Vector<SVGTextFragment> m_textFragments;
83};
84
85DEFINE_INLINE_BOX_TYPE_CASTS(SVGInlineTextBox);
86
87} // namespace blink
88
89#endif // SVGInlineTextBox_h
90