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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 "CSSFontFaceRule.h"
#include "CSSFontFaceSource.h"
#include "FontTraitsMask.h"
#include <wtf/Forward.h>
#include <wtf/HashSet.h>
#include <wtf/PassRefPtr.h>
#include <wtf/RefCounted.h>
#include <wtf/Vector.h>
#include <wtf/unicode/Unicode.h>
namespace WebCore {
class CSSSegmentedFontFace;
class FontDescription;
class SimpleFontData;
class CSSFontFace : public RefCounted<CSSFontFace> {
public:
static PassRefPtr<CSSFontFace> create(FontTraitsMask traitsMask, PassRefPtr<CSSFontFaceRule> rule, bool isLocalFallback = false) { return adoptRef(new CSSFontFace(traitsMask, rule, isLocalFallback)); }
FontTraitsMask traitsMask() const { return m_traitsMask; }
struct UnicodeRange;
void addRange(UChar32 from, UChar32 to) { m_ranges.append(UnicodeRange(from, to)); }
const Vector<UnicodeRange>& ranges() const { return m_ranges; }
void addedToSegmentedFontFace(CSSSegmentedFontFace*);
void removedFromSegmentedFontFace(CSSSegmentedFontFace*);
bool isLoaded() const;
bool isValid() const;
bool isLocalFallback() const { return m_isLocalFallback; }
void addSource(PassOwnPtr<CSSFontFaceSource>);
void fontLoaded(CSSFontFaceSource*);
PassRefPtr<SimpleFontData> getFontData(const FontDescription&, bool syntheticBold, bool syntheticItalic);
struct UnicodeRange {
UnicodeRange(UChar32 from, UChar32 to)
: m_from(from)
, m_to(to)
{
}
UChar32 from() const { return m_from; }
UChar32 to() const { return m_to; }
private:
UChar32 m_from;
UChar32 m_to;
};
#if ENABLE(SVG_FONTS)
bool hasSVGFontFaceSource() const;
#endif
#if ENABLE(FONT_LOAD_EVENTS)
enum LoadState { NotLoaded, Loading, Loaded, Error };
LoadState loadState() const { return m_loadState; }
#endif
private:
CSSFontFace(FontTraitsMask traitsMask, PassRefPtr<CSSFontFaceRule> rule, bool isLocalFallback)
: m_traitsMask(traitsMask)
, m_activeSource(0)
, m_isLocalFallback(isLocalFallback)
#if ENABLE(FONT_LOAD_EVENTS)
, m_loadState(isLocalFallback ? Loaded : NotLoaded)
, m_rule(rule)
#endif
{
UNUSED_PARAM(rule);
}
FontTraitsMask m_traitsMask;
Vector<UnicodeRange> m_ranges;
HashSet<CSSSegmentedFontFace*> m_segmentedFontFaces;
Vector<OwnPtr<CSSFontFaceSource> > m_sources;
CSSFontFaceSource* m_activeSource;
bool m_isLocalFallback;
#if ENABLE(FONT_LOAD_EVENTS)
LoadState m_loadState;
RefPtr<CSSFontFaceRule> m_rule;
void notifyFontLoader(LoadState);
void notifyLoadingDone();
#endif
};
}
#endif
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