gfx/thebes/gfxFontSrcURI.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   2  * This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef MOZILLA_GFX_FONTSRCURI_H
   7 #define MOZILLA_GFX_FONTSRCURI_H
   8
   9 #include "nsCOMPtr.h"
  10 #include "nsTString.h"
  11 #include "PLDHashTable.h"
  12
  13 class nsIURI;
  14
  15 namespace mozilla {
  16 namespace net {
  17 class nsSimpleURI;
  18 }  // namespace net
  19 }  // namespace mozilla
  20
  21 /**
  22  * A wrapper for an nsIURI that can be used OMT, which has cached information
  23  * useful for the gfxUserFontSet.
  24  */
  25 class gfxFontSrcURI final {
  26  public:
  27   explicit gfxFontSrcURI(nsIURI* aURI);
  28
  29   NS_INLINE_DECL_THREADSAFE_REFCOUNTING(gfxFontSrcURI)
  30
  31   nsIURI* get() { return mURI; }
  32
  33   bool Equals(gfxFontSrcURI* aOther);
  34   nsresult GetSpec(nsACString& aResult);
  35   nsCString GetSpecOrDefault();
  36
  37   PLDHashNumber Hash() const { return mHash; }
  38
  39   bool InheritsSecurityContext() {
  40     EnsureInitialized();
  41     return mInheritsSecurityContext;
  42   }
  43
  44   bool SyncLoadIsOK() {
  45     EnsureInitialized();
  46     return mSyncLoadIsOK;
  47   }
  48
  49  private:
  50   ~gfxFontSrcURI();
  51
  52   void EnsureInitialized();
  53
  54   // The URI.
  55   nsCOMPtr<nsIURI> mURI;
  56
  57   // If the nsIURI is an nsSimpleURI for a data: URL, this is a pointer to it.
  58   // (Just a weak reference since mURI holds the strong reference.)
  59   //
  60   // We store this so that we don't duplicate the URL spec for data: URLs,
  61   // which can be much larger than other URLs.
  62   mozilla::net::nsSimpleURI* mSimpleURI;
  63
  64   // If the nsIURI is not an nsSimpleURI, this is its spec.
  65   nsCString mSpec;
  66
  67   // Precomputed hash for mURI.
  68   PLDHashNumber mHash;
  69
  70   // Whether the font has been initialized on the main thread.
  71   bool mInitialized = false;
  72
  73   // Whether the nsIURI's protocol handler has the URI_INHERITS_SECURITY_CONTEXT
  74   // flag.
  75   bool mInheritsSecurityContext = false;
  76
  77   // Whether the nsIURI's protocol handler has teh URI_SYNC_LOAD_IS_OK flag.
  78   bool mSyncLoadIsOK = false;
  79 };
  80
  81 #endif  // MOZILLA_GFX_FONTSRCURI_H