1/*
2 * Copyright (C) 2007, 2008 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 CachedFont_h
27#define CachedFont_h
28
29#include "CachedResource.h"
30#include "FontOrientation.h"
31#include "FontRenderingMode.h"
32#include "FontWidthVariant.h"
33#include "TextOrientation.h"
34#include <wtf/Vector.h>
35
36#if ENABLE(SVG_FONTS)
37#include "SVGElement.h"
38#include "SVGDocument.h"
39#endif
40
41namespace WebCore {
42
43class CachedResourceLoader;
44class MemoryCache;
45class FontPlatformData;
46class SVGFontElement;
47
48struct FontCustomPlatformData;
49
50class CachedFont : public CachedResource {
51public:
52    CachedFont(const String& url);
53    virtual ~CachedFont();
54
55    virtual void load(CachedResourceLoader* cachedResourceLoader);
56
57    virtual void didAddClient(CachedResourceClient*);
58    virtual void data(PassRefPtr<SharedBuffer> data, bool allDataReceived);
59    virtual void error(CachedResource::Status);
60
61    virtual void allClientsRemoved();
62
63    void checkNotify();
64
65    void beginLoadIfNeeded(CachedResourceLoader* dl);
66
67    bool ensureCustomFontData();
68    FontPlatformData platformDataFromCustomData(float size, bool bold, bool italic, FontOrientation = Horizontal, TextOrientation = TextOrientationVerticalRight, FontWidthVariant = RegularWidth, FontRenderingMode = NormalRenderingMode);
69
70#if ENABLE(SVG_FONTS)
71    bool ensureSVGFontData();
72    SVGFontElement* getSVGFontById(const String&) const;
73#endif
74
75private:
76    FontCustomPlatformData* m_fontData;
77    bool m_loadInitiated;
78
79#if ENABLE(SVG_FONTS)
80    RefPtr<SVGDocument> m_externalSVGDocument;
81#endif
82
83    friend class MemoryCache;
84};
85
86}
87
88#endif
89