The Tor Browser / file comparison
comparison: layout/style/nsFontFaceLoader.h
layout/style/nsFontFaceLoader.h
- branch
- TOR_BUG_9701
- changeset 11
- deefc01c0e14
equal
deleted
inserted
replaced
| -1:000000000000 | 0:98dacc136f00 |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 // vim:cindent:ts=2:et:sw=2: | |
| 3 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 /* code for loading in @font-face defined font data */ | |
| 8 | |
| 9 #ifndef nsFontFaceLoader_h_ | |
| 10 #define nsFontFaceLoader_h_ | |
| 11 | |
| 12 #include "mozilla/Attributes.h" | |
| 13 #include "nsCOMPtr.h" | |
| 14 #include "nsIStreamLoader.h" | |
| 15 #include "nsIChannel.h" | |
| 16 #include "gfxUserFontSet.h" | |
| 17 #include "nsHashKeys.h" | |
| 18 #include "nsTHashtable.h" | |
| 19 #include "nsCSSRules.h" | |
| 20 | |
| 21 class nsPresContext; | |
| 22 class nsIPrincipal; | |
| 23 | |
| 24 class nsFontFaceLoader; | |
| 25 | |
| 26 // nsUserFontSet - defines the loading mechanism for downloadable fonts | |
| 27 class nsUserFontSet : public gfxUserFontSet | |
| 28 { | |
| 29 public: | |
| 30 nsUserFontSet(nsPresContext* aContext); | |
| 31 | |
| 32 // Called when this font set is no longer associated with a presentation. | |
| 33 void Destroy(); | |
| 34 | |
| 35 // starts loading process, creating and initializing a nsFontFaceLoader obj | |
| 36 // returns whether load process successfully started or not | |
| 37 nsresult StartLoad(gfxMixedFontFamily* aFamily, | |
| 38 gfxProxyFontEntry* aFontToLoad, | |
| 39 const gfxFontFaceSrc* aFontFaceSrc) MOZ_OVERRIDE; | |
| 40 | |
| 41 // Called by nsFontFaceLoader when the loader has completed normally. | |
| 42 // It's removed from the mLoaders set. | |
| 43 void RemoveLoader(nsFontFaceLoader* aLoader); | |
| 44 | |
| 45 bool UpdateRules(const nsTArray<nsFontFaceRuleContainer>& aRules); | |
| 46 | |
| 47 virtual nsPresContext* GetPresContext() { return mPresContext; } | |
| 48 | |
| 49 virtual void ReplaceFontEntry(gfxMixedFontFamily* aFamily, | |
| 50 gfxProxyFontEntry* aProxy, | |
| 51 gfxFontEntry* aFontEntry) MOZ_OVERRIDE; | |
| 52 | |
| 53 nsCSSFontFaceRule* FindRuleForEntry(gfxFontEntry* aFontEntry); | |
| 54 | |
| 55 protected: | |
| 56 // Protected destructor, to discourage deletion outside of Release() | |
| 57 // (since we inherit from refcounted class gfxUserFontSet): | |
| 58 ~nsUserFontSet(); | |
| 59 | |
| 60 // The font-set keeps track of the collection of rules, and their | |
| 61 // corresponding font entries (whether proxies or real entries), | |
| 62 // so that we can update the set without having to throw away | |
| 63 // all the existing fonts. | |
| 64 struct FontFaceRuleRecord { | |
| 65 nsRefPtr<gfxFontEntry> mFontEntry; | |
| 66 nsFontFaceRuleContainer mContainer; | |
| 67 }; | |
| 68 | |
| 69 void InsertRule(nsCSSFontFaceRule* aRule, uint8_t aSheetType, | |
| 70 nsTArray<FontFaceRuleRecord>& oldRules, | |
| 71 bool& aFontSetModified); | |
| 72 | |
| 73 virtual nsresult LogMessage(gfxMixedFontFamily* aFamily, | |
| 74 gfxProxyFontEntry* aProxy, | |
| 75 const char* aMessage, | |
| 76 uint32_t aFlags = nsIScriptError::errorFlag, | |
| 77 nsresult aStatus = NS_OK) MOZ_OVERRIDE; | |
| 78 | |
| 79 virtual nsresult CheckFontLoad(const gfxFontFaceSrc* aFontFaceSrc, | |
| 80 nsIPrincipal** aPrincipal, | |
| 81 bool* aBypassCache) MOZ_OVERRIDE; | |
| 82 | |
| 83 virtual nsresult SyncLoadFontData(gfxProxyFontEntry* aFontToLoad, | |
| 84 const gfxFontFaceSrc* aFontFaceSrc, | |
| 85 uint8_t*& aBuffer, | |
| 86 uint32_t& aBufferLength) MOZ_OVERRIDE; | |
| 87 | |
| 88 virtual bool GetPrivateBrowsing() MOZ_OVERRIDE; | |
| 89 | |
| 90 virtual void DoRebuildUserFontSet() MOZ_OVERRIDE; | |
| 91 | |
| 92 nsPresContext* mPresContext; // weak reference | |
| 93 | |
| 94 // Set of all loaders pointing to us. These are not strong pointers, | |
| 95 // but that's OK because nsFontFaceLoader always calls RemoveLoader on | |
| 96 // us before it dies (unless we die first). | |
| 97 nsTHashtable< nsPtrHashKey<nsFontFaceLoader> > mLoaders; | |
| 98 | |
| 99 nsTArray<FontFaceRuleRecord> mRules; | |
| 100 }; | |
| 101 | |
| 102 class nsFontFaceLoader : public nsIStreamLoaderObserver | |
| 103 { | |
| 104 public: | |
| 105 nsFontFaceLoader(gfxMixedFontFamily* aFontFamily, | |
| 106 gfxProxyFontEntry* aFontToLoad, nsIURI* aFontURI, | |
| 107 nsUserFontSet* aFontSet, nsIChannel* aChannel); | |
| 108 | |
| 109 virtual ~nsFontFaceLoader(); | |
| 110 | |
| 111 NS_DECL_ISUPPORTS | |
| 112 NS_DECL_NSISTREAMLOADEROBSERVER | |
| 113 | |
| 114 // initiate the load | |
| 115 nsresult Init(); | |
| 116 // cancel the load and remove its reference to mFontSet | |
| 117 void Cancel(); | |
| 118 | |
| 119 void DropChannel() { mChannel = nullptr; } | |
| 120 | |
| 121 void StartedLoading(nsIStreamLoader* aStreamLoader); | |
| 122 | |
| 123 static void LoadTimerCallback(nsITimer* aTimer, void* aClosure); | |
| 124 | |
| 125 static nsresult CheckLoadAllowed(nsIPrincipal* aSourcePrincipal, | |
| 126 nsIURI* aTargetURI, | |
| 127 nsISupports* aContext); | |
| 128 | |
| 129 private: | |
| 130 nsRefPtr<gfxMixedFontFamily> mFontFamily; | |
| 131 nsRefPtr<gfxProxyFontEntry> mFontEntry; | |
| 132 nsCOMPtr<nsIURI> mFontURI; | |
| 133 nsRefPtr<nsUserFontSet> mFontSet; | |
| 134 nsCOMPtr<nsIChannel> mChannel; | |
| 135 nsCOMPtr<nsITimer> mLoadTimer; | |
| 136 | |
| 137 nsIStreamLoader* mStreamLoader; | |
| 138 }; | |
| 139 | |
| 140 #endif /* !defined(nsFontFaceLoader_h_) */ |
