1/*
2 * Copyright (C) 2007, 2008, 2011 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef CSSFontFaceSource_h
27#define CSSFontFaceSource_h
28
29#include "CachedFontClient.h"
30#include "CachedResourceHandle.h"
31#include "Timer.h"
32#include <wtf/HashMap.h>
33#include <wtf/text/AtomicString.h>
34
35namespace WebCore {
36
37class CachedFont;
38class CSSFontFace;
39class CSSFontSelector;
40class FontDescription;
41class SimpleFontData;
42#if ENABLE(SVG_FONTS)
43class SVGFontElement;
44class SVGFontFaceElement;
45#endif
46
47class CSSFontFaceSource : public CachedFontClient {
48public:
49    CSSFontFaceSource(const String&, CachedFont* = 0);
50    virtual ~CSSFontFaceSource();
51
52    bool isLoaded() const;
53    bool isValid() const;
54
55    const AtomicString& string() const { return m_string; }
56
57    void setFontFace(CSSFontFace* face) { m_face = face; }
58
59    virtual void fontLoaded(CachedFont*);
60
61    PassRefPtr<SimpleFontData> getFontData(const FontDescription&, bool syntheticBold, bool syntheticItalic, CSSFontSelector*);
62
63    void pruneTable();
64
65#if ENABLE(SVG_FONTS)
66    SVGFontFaceElement* svgFontFaceElement() const;
67    void setSVGFontFaceElement(PassRefPtr<SVGFontFaceElement>);
68    bool isSVGFontFaceSource() const;
69    void setHasExternalSVGFont(bool value) { m_hasExternalSVGFont = value; }
70#endif
71
72#if ENABLE(FONT_LOAD_EVENTS)
73    bool isDecodeError() const;
74    bool ensureFontData();
75#endif
76
77private:
78    void startLoadingTimerFired(Timer<CSSFontFaceSource>*);
79
80    AtomicString m_string; // URI for remote, built-in font name for local.
81    CachedResourceHandle<CachedFont> m_font; // For remote fonts, a pointer to our cached resource.
82    CSSFontFace* m_face; // Our owning font face.
83    HashMap<unsigned, RefPtr<SimpleFontData> > m_fontDataTable; // The hash key is composed of size synthetic styles.
84
85#if ENABLE(SVG_FONTS)
86    RefPtr<SVGFontFaceElement> m_svgFontFaceElement;
87    RefPtr<SVGFontElement> m_externalSVGFontElement;
88    bool m_hasExternalSVGFont;
89#endif
90};
91
92}
93
94#endif
95