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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;
41 class FontCustomPlatformData;
43 class FontResource final : public Resource {
45 typedef ResourceClient ClientType;
47 FontResource(const ResourceRequest&);
48 virtual ~FontResource();
50 virtual void load(ResourceFetcher*, const ResourceLoaderOptions&) override;
52 virtual void didAddClient(ResourceClient*) override;
54 virtual void allClientsRemoved() override;
55 void beginLoadIfNeeded(ResourceFetcher* dl);
56 virtual bool stillNeedsLoad() const override { return m_state != LoadInitiated; }
57 bool exceedsFontLoadWaitLimit() const { return m_exceedsFontLoadWaitLimit; }
59 bool loadScheduled() const { return m_state != Unloaded; }
60 void didScheduleLoad();
61 void didUnscheduleLoad();
63 void setCORSFailed() { m_corsFailed = true; }
64 bool isCORSFailed() const { return m_corsFailed; }
66 bool ensureCustomFontData();
67 FontPlatformData platformDataFromCustomData(float size, bool bold, bool italic, FontOrientation = Horizontal, FontWidthVariant = RegularWidth);
70 virtual bool isSafeToUnlock() const override;
73 virtual void checkNotify() override;
74 void fontLoadWaitLimitCallback(Timer<FontResource>*);
76 enum State { Unloaded, LoadScheduled, LoadInitiated };
78 OwnPtr<FontCustomPlatformData> m_fontData;
80 bool m_exceedsFontLoadWaitLimit;
82 Timer<FontResource> m_fontLoadWaitLimitTimer;
84 friend class MemoryCache;
87 DEFINE_RESOURCE_TYPE_CASTS(Font);
89 class FontResourceClient : public ResourceClient {
91 virtual ~FontResourceClient() { }
92 static ResourceClientType expectedType() { return FontType; }
93 virtual ResourceClientType resourceClientType() const override final { return expectedType(); }
94 virtual void fontLoaded(FontResource*) { }
95 virtual void didStartFontLoad(FontResource*) { }
96 virtual void fontLoadWaitLimitExceeded(FontResource*) { }