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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* code for loading in @font-face defined font data */
#ifndef nsFontFaceLoader_h_
#define nsFontFaceLoader_h_
#include "mozilla/Attributes.h"
#include "mozilla/TimeStamp.h"
#include "mozilla/dom/FontFaceSet.h"
#include "nsCOMPtr.h"
#include "nsIFontLoadCompleteCallback.h"
#include "nsIStreamLoader.h"
#include "nsIChannel.h"
#include "nsIRequestObserver.h"
#include "gfxUserFontSet.h"
#include "nsHashKeys.h"
#include "nsTHashtable.h"
class nsIPrincipal;
class nsFontFaceLoader final : public nsIStreamLoaderObserver,
public nsIRequestObserver,
public nsIFontLoadCompleteCallback {
public:
nsFontFaceLoader(gfxUserFontEntry* aFontToLoad, nsIURI* aFontURI,
mozilla::dom::FontFaceSet* aFontFaceSet,
nsIChannel* aChannel);
NS_DECL_ISUPPORTS
NS_DECL_NSISTREAMLOADEROBSERVER
NS_DECL_NSIREQUESTOBSERVER
// cancel the load and remove its reference to mFontFaceSet
void Cancel();
void DropChannel() { mChannel = nullptr; }
void StartedLoading(nsIStreamLoader* aStreamLoader);
static void LoadTimerCallback(nsITimer* aTimer, void* aClosure);
gfxUserFontEntry* GetUserFontEntry() const { return mUserFontEntry; }
// Called by the gfxUserFontEntry once it has finished the platform font
// loading.
NS_IMETHODIMP FontLoadComplete() final;
protected:
virtual ~nsFontFaceLoader();
// helper method for determining the font-display value
mozilla::StyleFontDisplay GetFontDisplay();
private:
RefPtr<gfxUserFontEntry> mUserFontEntry;
nsCOMPtr<nsIURI> mFontURI;
// Cleared in FontFaceSet::~FontFaceSet, and on cancelation and such too.
mozilla::dom::FontFaceSet* MOZ_NON_OWNING_REF mFontFaceSet;
nsCOMPtr<nsIChannel> mChannel;
nsCOMPtr<nsITimer> mLoadTimer;
mozilla::TimeStamp mStartTime;
nsIStreamLoader* mStreamLoader;
bool mInStreamComplete = false;
bool mInLoadTimerCallback = false;
};
#endif /* !defined(nsFontFaceLoader_h_) */
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