1/*
2 * Copyright (C) 2006 Oliver Hunt <ojh16@student.canterbury.ac.nz>
3 * Copyright (C) 2006, 2008 Apple Inc. All rights reserved.
4 * Copyright (C) 2008 Rob Buis <buis@kde.org>
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 RenderSVGInlineText_h
23#define RenderSVGInlineText_h
24
25#include "core/rendering/RenderText.h"
26#include "core/rendering/svg/SVGTextLayoutAttributes.h"
27
28namespace blink {
29
30class RenderSVGInlineText FINAL : public RenderText {
31public:
32    RenderSVGInlineText(Node*, PassRefPtr<StringImpl>);
33
34    bool characterStartsNewTextChunk(int position) const;
35    SVGTextLayoutAttributes* layoutAttributes() { return &m_layoutAttributes; }
36    const SVGTextLayoutAttributes* layoutAttributes() const { return &m_layoutAttributes; }
37
38    float scalingFactor() const { return m_scalingFactor; }
39    const Font& scaledFont() const { return m_scaledFont; }
40    void updateScaledFont();
41    static void computeNewScaledFontForStyle(RenderObject*, const RenderStyle*, float& scalingFactor, Font& scaledFont);
42
43    // Preserves floating point precision for the use in DRT. It knows how to round and does a better job than enclosingIntRect.
44    FloatRect floatLinesBoundingBox() const;
45
46private:
47    virtual const char* renderName() const OVERRIDE { return "RenderSVGInlineText"; }
48
49    virtual void setTextInternal(PassRefPtr<StringImpl>) OVERRIDE;
50    virtual void styleDidChange(StyleDifference, const RenderStyle*) OVERRIDE;
51
52    virtual FloatRect objectBoundingBox() const OVERRIDE { return floatLinesBoundingBox(); }
53
54    virtual bool isSVGInlineText() const OVERRIDE { return true; }
55    virtual bool isSVG() const OVERRIDE { return true; }
56
57    virtual PositionWithAffinity positionForPoint(const LayoutPoint&) OVERRIDE;
58    virtual LayoutRect localCaretRect(InlineBox*, int caretOffset, LayoutUnit* extraWidthToEndOfLine = 0) OVERRIDE;
59    virtual IntRect linesBoundingBox() const OVERRIDE;
60    virtual InlineTextBox* createTextBox() OVERRIDE;
61
62    float m_scalingFactor;
63    Font m_scaledFont;
64    SVGTextLayoutAttributes m_layoutAttributes;
65};
66
67DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderSVGInlineText, isSVGInlineText());
68
69}
70
71#endif // RenderSVGInlineText_h
72