Line data    Source code

       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 "mozilla/TimeStamp.h"
      14             : #include "nsCOMPtr.h"
      15             : #include "nsIStreamLoader.h"
      16             : #include "nsIChannel.h"
      17             : #include "gfxUserFontSet.h"
      18             : #include "nsHashKeys.h"
      19             : #include "nsTHashtable.h"
      20             : #include "nsCSSRules.h"
      21             : 
      22             : class nsIPrincipal;
      23             : 
      24             : class nsFontFaceLoader : public nsIStreamLoaderObserver
      25             : {
      26             : public:
      27             :   nsFontFaceLoader(gfxUserFontEntry* aFontToLoad, nsIURI* aFontURI,
      28             :                    mozilla::dom::FontFaceSet* aFontFaceSet,
      29             :                    nsIChannel* aChannel);
      30             : 
      31             :   NS_DECL_ISUPPORTS
      32             :   NS_DECL_NSISTREAMLOADEROBSERVER
      33             : 
      34             :   // initiate the load
      35             :   nsresult Init();
      36             :   // cancel the load and remove its reference to mFontFaceSet
      37             :   void Cancel();
      38             : 
      39           0 :   void DropChannel() { mChannel = nullptr; }
      40             : 
      41             :   void StartedLoading(nsIStreamLoader* aStreamLoader);
      42             : 
      43             :   static void LoadTimerCallback(nsITimer* aTimer, void* aClosure);
      44             : 
      45             :   gfxUserFontEntry* GetUserFontEntry() const { return mUserFontEntry; }
      46             : 
      47             : protected:
      48             :   virtual ~nsFontFaceLoader();
      49             : 
      50             :   // helper method for determining the font-display value
      51             :   uint8_t GetFontDisplay();
      52             : 
      53             : private:
      54             :   RefPtr<gfxUserFontEntry>  mUserFontEntry;
      55             :   nsCOMPtr<nsIURI>        mFontURI;
      56             :   RefPtr<mozilla::dom::FontFaceSet> mFontFaceSet;
      57             :   nsCOMPtr<nsIChannel>    mChannel;
      58             :   nsCOMPtr<nsITimer>      mLoadTimer;
      59             :   mozilla::TimeStamp      mStartTime;
      60             :   nsIStreamLoader*        mStreamLoader;
      61             : };
      62             : 
      63             : #endif /* !defined(nsFontFaceLoader_h_) */