| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "config.h" |
| #include "core/css/FontLoader.h" |
| |
| #include "core/css/CSSFontSelector.h" |
| #include "core/fetch/FontResource.h" |
| #include "core/fetch/ResourceFetcher.h" |
| |
| namespace WebCore { |
| |
| FontLoader::FontLoader(CSSFontSelector* fontSelector, ResourceFetcher* resourceFetcher) |
| : m_beginLoadingTimer(this, &FontLoader::beginLoadTimerFired) |
| , m_fontSelector(fontSelector) |
| , m_resourceFetcher(resourceFetcher) |
| { |
| } |
| |
| FontLoader::~FontLoader() |
| { |
| #if ENABLE(OILPAN) |
| if (!m_resourceFetcher) { |
| ASSERT(m_fontsToBeginLoading.isEmpty()); |
| return; |
| } |
| m_beginLoadingTimer.stop(); |
| |
| // When the m_fontsToBeginLoading vector is destroyed it will decrement the |
| // request counts on the ResourceFetcher for all the fonts that were pending |
| // at the time the FontLoader dies. |
| #endif |
| } |
| |
| void FontLoader::addFontToBeginLoading(FontResource* fontResource) |
| { |
| if (!m_resourceFetcher || !fontResource->stillNeedsLoad()) |
| return; |
| |
| m_fontsToBeginLoading.append( |
| std::make_pair(fontResource, ResourceLoader::RequestCountTracker(m_resourceFetcher, fontResource))); |
| if (!m_beginLoadingTimer.isActive()) |
| m_beginLoadingTimer.startOneShot(0, FROM_HERE); |
| } |
| |
| void FontLoader::beginLoadTimerFired(Timer<WebCore::FontLoader>*) |
| { |
| loadPendingFonts(); |
| } |
| |
| void FontLoader::loadPendingFonts() |
| { |
| ASSERT(m_resourceFetcher); |
| |
| FontsToLoadVector fontsToBeginLoading; |
| fontsToBeginLoading.swap(m_fontsToBeginLoading); |
| for (FontsToLoadVector::iterator it = fontsToBeginLoading.begin(); it != fontsToBeginLoading.end(); ++it) { |
| FontResource* fontResource = it->first.get(); |
| fontResource->beginLoadIfNeeded(m_resourceFetcher); |
| } |
| |
| // When the local fontsToBeginLoading vector goes out of scope it will |
| // decrement the request counts on the ResourceFetcher for all the fonts |
| // that were just loaded. |
| } |
| |
| void FontLoader::fontFaceInvalidated() |
| { |
| if (m_fontSelector) |
| m_fontSelector->fontFaceInvalidated(); |
| } |
| |
| #if !ENABLE(OILPAN) |
| void FontLoader::clearResourceFetcherAndFontSelector() |
| { |
| if (!m_resourceFetcher) { |
| ASSERT(m_fontsToBeginLoading.isEmpty()); |
| return; |
| } |
| |
| m_beginLoadingTimer.stop(); |
| m_fontsToBeginLoading.clear(); |
| m_resourceFetcher = nullptr; |
| m_fontSelector = nullptr; |
| } |
| #endif |
| |
| void FontLoader::trace(Visitor* visitor) |
| { |
| visitor->trace(m_resourceFetcher); |
| visitor->trace(m_fontSelector); |
| } |
| |
| } // namespace WebCore |