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https://github.com/mozilla/gecko-dev.git
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3b93e0e5f8
Dynamically toggle support for displaying image/webp and image/avif according to the values of the image.webp.enabled and image.avif.enabled prefs. Differential Revision: https://phabricator.services.mozilla.com/D76977
86 lines
2.5 KiB
C++
86 lines
2.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsImageModule.h"
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#include "mozilla/ModuleUtils.h"
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#include "mozilla/StaticPrefs_image.h"
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#include "DecodePool.h"
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#include "ImageFactory.h"
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#include "nsICategoryManager.h"
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#include "ShutdownTracker.h"
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#include "SurfaceCache.h"
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#include "imgLoader.h"
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using namespace mozilla::image;
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struct ImageEnablementCookie {
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bool (*mIsEnabled)();
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const nsLiteralCString mMimeType;
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};
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static void UpdateContentViewerRegistration(const char* aPref, void* aData) {
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auto* cookie = static_cast<ImageEnablementCookie*>(aData);
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nsCOMPtr<nsICategoryManager> catMan =
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do_GetService(NS_CATEGORYMANAGER_CONTRACTID);
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if (!catMan) {
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return;
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}
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static nsLiteralCString kCategory =
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NS_LITERAL_CSTRING("Gecko-Content-Viewers");
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static nsLiteralCString kContractId = NS_LITERAL_CSTRING(
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"@mozilla.org/content/plugin/document-loader-factory;1");
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if (cookie->mIsEnabled()) {
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catMan->AddCategoryEntry(kCategory, cookie->mMimeType, kContractId,
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false /* aPersist */, true /* aReplace */);
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} else {
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catMan->DeleteCategoryEntry(
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kCategory, cookie->mMimeType, false /* aPersist */
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);
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}
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}
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static bool sInitialized = false;
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nsresult mozilla::image::EnsureModuleInitialized() {
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MOZ_ASSERT(NS_IsMainThread());
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if (sInitialized) {
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return NS_OK;
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}
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static ImageEnablementCookie kAVIFCookie = {
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mozilla::StaticPrefs::image_avif_enabled,
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NS_LITERAL_CSTRING("image/avif")};
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static ImageEnablementCookie kWebPCookie = {
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mozilla::StaticPrefs::image_webp_enabled,
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NS_LITERAL_CSTRING("image/webp")};
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Preferences::RegisterCallbackAndCall(UpdateContentViewerRegistration,
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"image.avif.enabled", &kAVIFCookie);
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Preferences::RegisterCallbackAndCall(UpdateContentViewerRegistration,
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"image.webp.enabled", &kWebPCookie);
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mozilla::image::ShutdownTracker::Initialize();
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mozilla::image::ImageFactory::Initialize();
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mozilla::image::DecodePool::Initialize();
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mozilla::image::SurfaceCache::Initialize();
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imgLoader::GlobalInit();
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sInitialized = true;
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return NS_OK;
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}
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void mozilla::image::ShutdownModule() {
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if (!sInitialized) {
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return;
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}
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imgLoader::Shutdown();
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mozilla::image::SurfaceCache::Shutdown();
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sInitialized = false;
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}
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