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 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#pragma once
27
28#include "CachedFontClient.h"
29#include "CachedResourceHandle.h"
30#include <JavaScriptCore/ArrayBufferView.h>
31#include <wtf/WeakPtr.h>
32#include <wtf/text/AtomicString.h>
33
34namespace WebCore {
35
36class CSSFontFace;
37class CSSFontSelector;
38class Font;
39struct FontCustomPlatformData;
40class FontDescription;
41struct FontSelectionSpecifiedCapabilities;
42struct FontVariantSettings;
43class SVGFontFaceElement;
44class SharedBuffer;
45
46template <typename T> class FontTaggedSettings;
47typedef FontTaggedSettings<int> FontFeatureSettings;
48
49class CSSFontFaceSource final : public CachedFontClient {
50 WTF_MAKE_FAST_ALLOCATED;
51public:
52 CSSFontFaceSource(CSSFontFace& owner, const String& familyNameOrURI, CachedFont* = nullptr, SVGFontFaceElement* = nullptr, RefPtr<JSC::ArrayBufferView>&& = nullptr);
53 virtual ~CSSFontFaceSource();
54
55 // => Success
56 // //
57 // Pending => Loading
58 // \\.
59 // => Failure
60 enum class Status {
61 Pending,
62 Loading,
63 Success,
64 Failure
65 };
66 Status status() const { return m_status; }
67
68 const AtomicString& familyNameOrURI() const { return m_familyNameOrURI; }
69
70 void opportunisticallyStartFontDataURLLoading(CSSFontSelector&);
71
72 void load(CSSFontSelector*);
73 RefPtr<Font> font(const FontDescription&, bool syntheticBold, bool syntheticItalic, const FontFeatureSettings&, const FontVariantSettings&, FontSelectionSpecifiedCapabilities);
74
75 bool requiresExternalResource() const { return m_font; }
76
77#if ENABLE(SVG_FONTS)
78 bool isSVGFontFaceSource() const;
79#endif
80
81private:
82 bool shouldIgnoreFontLoadCompletions() const;
83
84 void fontLoaded(CachedFont&) override;
85
86 void setStatus(Status);
87
88 AtomicString m_familyNameOrURI; // URI for remote, built-in font name for local.
89 CachedResourceHandle<CachedFont> m_font; // For remote fonts, a pointer to our cached resource.
90 CSSFontFace& m_face; // Our owning font face.
91
92 RefPtr<SharedBuffer> m_generatedOTFBuffer;
93 RefPtr<JSC::ArrayBufferView> m_immediateSource;
94 std::unique_ptr<FontCustomPlatformData> m_immediateFontCustomPlatformData;
95
96#if ENABLE(SVG_FONTS)
97 WeakPtr<SVGFontFaceElement> m_svgFontFaceElement;
98#endif
99 std::unique_ptr<FontCustomPlatformData> m_inDocumentCustomPlatformData;
100
101 Status m_status { Status::Pending };
102#if ENABLE(SVG_FONTS)
103 bool m_hasSVGFontFaceElement;
104#endif
105};
106
107} // namespace WebCore
108