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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 
41 namespace WebCore {
42 
43 class CachedResourceLoader;
44 class MemoryCache;
45 class FontPlatformData;
46 class SVGFontElement;
47 
48 struct FontCustomPlatformData;
49 
50 class CachedFont : public CachedResource {
51 public:
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 
75 private:
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