2 * Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
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.
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.
26 #ifndef FontResource_h
27 #define FontResource_h
29 #include "core/fetch/ResourceClient.h"
30 #include "core/fetch/ResourcePtr.h"
31 #include "platform/Timer.h"
32 #include "platform/fonts/FontOrientation.h"
33 #include "platform/fonts/FontWidthVariant.h"
34 #include "wtf/OwnPtr.h"
39 class ResourceFetcher;
40 class FontPlatformData;
42 class FontCustomPlatformData;
44 class FontResource FINAL : public Resource {
46 typedef ResourceClient ClientType;
48 FontResource(const ResourceRequest&);
49 virtual ~FontResource();
51 virtual void load(ResourceFetcher*, const ResourceLoaderOptions&) OVERRIDE;
53 virtual void didAddClient(ResourceClient*) OVERRIDE;
55 virtual void allClientsRemoved() OVERRIDE;
56 void beginLoadIfNeeded(ResourceFetcher* dl);
57 virtual bool stillNeedsLoad() const OVERRIDE { return !m_loadInitiated; }
58 bool exceedsFontLoadWaitLimit() const { return m_exceedsFontLoadWaitLimit; }
60 void setCORSFailed() { m_corsFailed = true; }
61 bool isCORSFailed() const { return m_corsFailed; }
63 bool ensureCustomFontData();
64 FontPlatformData platformDataFromCustomData(float size, bool bold, bool italic, FontOrientation = Horizontal, FontWidthVariant = RegularWidth);
67 bool ensureSVGFontData();
68 SVGFontElement* getSVGFontById(const String&) const;
72 virtual bool isSafeToUnlock() const OVERRIDE;
75 virtual void checkNotify() OVERRIDE;
76 void fontLoadWaitLimitCallback(Timer<FontResource>*);
78 OwnPtr<FontCustomPlatformData> m_fontData;
80 bool m_exceedsFontLoadWaitLimit;
82 Timer<FontResource> m_fontLoadWaitLimitTimer;
85 RefPtr<WebCore::Document> m_externalSVGDocument;
88 friend class MemoryCache;
91 DEFINE_RESOURCE_TYPE_CASTS(Font);
93 class FontResourceClient : public ResourceClient {
95 virtual ~FontResourceClient() { }
96 static ResourceClientType expectedType() { return FontType; }
97 virtual ResourceClientType resourceClientType() const OVERRIDE FINAL { return expectedType(); }
98 virtual void fontLoaded(FontResource*) { }
99 virtual void didStartFontLoad(FontResource*) { }
100 virtual void fontLoadWaitLimitExceeded(FontResource*) { }
101 virtual void corsFailed(FontResource*) { }