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/*
* Copyright (C) 2007, 2008, 2011 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef CSSFontFaceSource_h
#define CSSFontFaceSource_h
#include "core/fetch/FontResource.h"
#include "core/fetch/ResourcePtr.h"
#include "platform/Timer.h"
#include "wtf/HashMap.h"
#include "wtf/text/AtomicString.h"
namespace WebCore {
class FontResource;
class CSSFontFace;
class CSSFontSelector;
class FontDescription;
class SimpleFontData;
#if ENABLE(SVG_FONTS)
class SVGFontElement;
class SVGFontFaceElement;
#endif
class CSSFontFaceSource : public FontResourceClient {
public:
CSSFontFaceSource(const String&, FontResource* = 0);
virtual ~CSSFontFaceSource();
bool isLocal() const;
bool isLoading() const;
bool isLoaded() const;
bool isValid() const;
const AtomicString& string() const { return m_string; }
void setFontFace(CSSFontFace* face) { m_face = face; }
virtual void didStartFontLoad(FontResource*) OVERRIDE;
virtual void fontLoaded(FontResource*);
PassRefPtr<SimpleFontData> getFontData(const FontDescription&, bool syntheticBold, bool syntheticItalic, CSSFontSelector*);
void pruneTable();
#if ENABLE(SVG_FONTS)
SVGFontFaceElement* svgFontFaceElement() const;
void setSVGFontFaceElement(PassRefPtr<SVGFontFaceElement>);
bool isSVGFontFaceSource() const;
void setHasExternalSVGFont(bool value) { m_hasExternalSVGFont = value; }
#endif
bool isDecodeError() const;
bool ensureFontData();
bool isLocalFontAvailable(const FontDescription&);
void willUseFontData();
void beginLoadingFontSoon();
private:
typedef HashMap<unsigned, RefPtr<SimpleFontData> > FontDataTable; // The hash key is composed of size synthetic styles.
class FontLoadHistograms {
public:
FontLoadHistograms() : m_loadStartTime(0) { }
void willUseFontData();
void loadStarted();
void recordLocalFont(bool loadSuccess);
void recordRemoteFont(const FontResource*);
private:
const char* histogramName(const FontResource*);
double m_loadStartTime;
};
void startLoadingTimerFired(Timer<CSSFontFaceSource>*);
AtomicString m_string; // URI for remote, built-in font name for local.
ResourcePtr<FontResource> m_font; // For remote fonts, a pointer to our cached resource.
CSSFontFace* m_face; // Our owning font face.
FontDataTable m_fontDataTable;
FontLoadHistograms m_histograms;
#if ENABLE(SVG_FONTS)
RefPtr<SVGFontFaceElement> m_svgFontFaceElement;
RefPtr<SVGFontElement> m_externalSVGFontElement;
bool m_hasExternalSVGFont;
#endif
};
}
#endif