1/*
2 * Copyright (C) 2011 Apple Inc. All rights reserved.
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public License
15 * along with this library; see the file COPYING.LIB.  If not, write to
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
18 *
19 */
20
21#ifndef RenderCombineText_h
22#define RenderCombineText_h
23
24#include "core/rendering/RenderText.h"
25#include "platform/fonts/Font.h"
26
27namespace blink {
28
29class RenderCombineText FINAL : public RenderText {
30public:
31    RenderCombineText(Node*, PassRefPtr<StringImpl>);
32
33    void combineText();
34    void adjustTextOrigin(FloatPoint& textOrigin, const FloatRect& boxRect) const;
35    void getStringToRender(int, StringView&, int& length) const;
36    bool isCombined() const { return m_isCombined; }
37    float combinedTextWidth(const Font& font) const { return font.fontDescription().computedSize(); }
38    const Font& originalFont() const { return parent()->style()->font(); }
39
40private:
41    virtual bool isCombineText() const OVERRIDE { return true; }
42    virtual float width(unsigned from, unsigned length, const Font&, float xPosition, TextDirection, HashSet<const SimpleFontData*>* fallbackFonts = 0, GlyphOverflow* = 0) const OVERRIDE;
43    virtual const char* renderName() const OVERRIDE { return "RenderCombineText"; }
44    virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle) OVERRIDE;
45    virtual void setTextInternal(PassRefPtr<StringImpl>) OVERRIDE;
46
47    float m_combinedTextWidth;
48    String m_renderingText;
49    bool m_isCombined : 1;
50    bool m_needsFontUpdate : 1;
51};
52
53DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderCombineText, isCombineText());
54
55} // namespace blink
56
57#endif // RenderCombineText_h
58