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/*
* Copyright (C) 2007, 2008 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 CSSFontFace_h
#define CSSFontFace_h
#include "core/CoreExport.h"
#include "core/css/CSSFontFaceSource.h"
#include "core/css/CSSSegmentedFontFace.h"
#include "core/css/FontFace.h"
#include "platform/fonts/SegmentedFontData.h"
#include "platform/fonts/UnicodeRangeSet.h"
#include "wtf/Deque.h"
#include "wtf/Forward.h"
#include "wtf/PassRefPtr.h"
#include "wtf/Vector.h"
namespace blink {
class FontDescription;
class RemoteFontFaceSource;
class SimpleFontData;
class CORE_EXPORT CSSFontFace final
: public GarbageCollectedFinalized<CSSFontFace> {
WTF_MAKE_NONCOPYABLE(CSSFontFace);
public:
CSSFontFace(FontFace* fontFace, Vector<UnicodeRange>& ranges)
: m_ranges(adoptRef(new UnicodeRangeSet(ranges))),
m_segmentedFontFace(nullptr),
m_fontFace(fontFace) {
ASSERT(m_fontFace);
}
FontFace* fontFace() const { return m_fontFace; }
PassRefPtr<UnicodeRangeSet> ranges() { return m_ranges; }
void setSegmentedFontFace(CSSSegmentedFontFace*);
void clearSegmentedFontFace() { m_segmentedFontFace = nullptr; }
bool isValid() const { return !m_sources.isEmpty(); }
size_t approximateBlankCharacterCount() const;
void addSource(CSSFontFaceSource*);
void didBeginLoad();
void fontLoaded(RemoteFontFaceSource*);
void didBecomeVisibleFallback(RemoteFontFaceSource*);
PassRefPtr<SimpleFontData> getFontData(const FontDescription&);
FontFace::LoadStatusType loadStatus() const {
return m_fontFace->loadStatus();
}
bool maybeLoadFont(const FontDescription&, const String&);
bool maybeLoadFont(const FontDescription&, const FontDataForRangeSet&);
void load();
void load(const FontDescription&);
bool hadBlankText() { return isValid() && m_sources.first()->hadBlankText(); }
DECLARE_TRACE();
private:
void setLoadStatus(FontFace::LoadStatusType);
RefPtr<UnicodeRangeSet> m_ranges;
Member<CSSSegmentedFontFace> m_segmentedFontFace;
HeapDeque<Member<CSSFontFaceSource>> m_sources;
Member<FontFace> m_fontFace;
};
} // namespace blink
#endif
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