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 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 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 "CachedResourceClient.h"
31#include "FontOrientation.h"
32#include "FontRenderingMode.h"
33#include "FontWidthVariant.h"
34
35namespace WebCore {
36
37class CachedResourceLoader;
38class FontPlatformData;
39class SVGDocument;
40class SVGFontElement;
41struct FontCustomPlatformData;
42
43class CachedFont final : public CachedResource {
44public:
45    CachedFont(const ResourceRequest&, SessionID);
46    virtual ~CachedFont();
47
48    void beginLoadIfNeeded(CachedResourceLoader* dl);
49    virtual bool stillNeedsLoad() const override { return !m_loadInitiated; }
50
51    bool ensureCustomFontData();
52    FontPlatformData platformDataFromCustomData(float size, bool bold, bool italic, FontOrientation = Horizontal, FontWidthVariant = RegularWidth, FontRenderingMode = NormalRenderingMode);
53
54#if ENABLE(SVG_FONTS)
55    bool ensureSVGFontData();
56    SVGFontElement* getSVGFontById(const String&) const;
57#endif
58
59private:
60    virtual void checkNotify() override;
61    virtual bool mayTryReplaceEncodedData() const override;
62
63    virtual void load(CachedResourceLoader*, const ResourceLoaderOptions&) override;
64
65    virtual void didAddClient(CachedResourceClient*) override;
66    virtual void finishLoading(ResourceBuffer*) override;
67
68    virtual void allClientsRemoved() override;
69
70    std::unique_ptr<FontCustomPlatformData> m_fontData;
71    bool m_loadInitiated;
72    bool m_hasCreatedFontDataWrappingResource;
73
74#if ENABLE(SVG_FONTS)
75    RefPtr<SVGDocument> m_externalSVGDocument;
76#endif
77
78    friend class MemoryCache;
79};
80
81CACHED_RESOURCE_TYPE_CASTS(CachedFont, CachedResource, CachedResource::FontResource)
82
83} // namespace WebCore
84
85#endif // CachedFont_h
86