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// 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.
#ifndef RemoteFontFaceSource_h
#define RemoteFontFaceSource_h
#include "core/css/CSSFontFaceSource.h"
#include "core/fetch/FontResource.h"
#include "core/fetch/ResourcePtr.h"
namespace WebCore {
class FontLoader;
class RemoteFontFaceSource : public CSSFontFaceSource, public FontResourceClient {
public:
explicit RemoteFontFaceSource(FontResource*, PassRefPtrWillBeRawPtr<FontLoader>);
virtual ~RemoteFontFaceSource();
virtual FontResource* resource() OVERRIDE { return m_font.get(); }
virtual bool isLoading() const OVERRIDE;
virtual bool isLoaded() const OVERRIDE;
virtual bool isValid() const OVERRIDE;
void beginLoadIfNeeded() OVERRIDE;
virtual bool ensureFontData();
#if ENABLE(SVG_FONTS)
virtual bool isSVGFontFaceSource() const { return false; }
#endif
virtual void didStartFontLoad(FontResource*) OVERRIDE;
virtual void fontLoaded(FontResource*) OVERRIDE;
virtual void fontLoadWaitLimitExceeded(FontResource*) OVERRIDE;
// For UMA reporting
virtual bool hadBlankText() OVERRIDE { return m_histograms.hadBlankText(); }
void paintRequested() { m_histograms.fallbackFontPainted(); }
virtual void trace(Visitor*) OVERRIDE;
protected:
virtual PassRefPtr<SimpleFontData> createFontData(const FontDescription&) OVERRIDE;
PassRefPtr<SimpleFontData> createLoadingFallbackFontData(const FontDescription&);
void pruneTable();
private:
class FontLoadHistograms {
public:
FontLoadHistograms() : m_loadStartTime(0), m_fallbackPaintTime(0) { }
void loadStarted();
void fallbackFontPainted();
void recordRemoteFont(const FontResource*);
void recordFallbackTime(const FontResource*);
bool hadBlankText() { return m_fallbackPaintTime; }
private:
const char* histogramName(const FontResource*);
double m_loadStartTime;
double m_fallbackPaintTime;
};
ResourcePtr<FontResource> m_font;
RefPtrWillBeMember<FontLoader> m_fontLoader;
FontLoadHistograms m_histograms;
};
} // namespace WebCore
#endif
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