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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/css/CSSFontFaceSource.h"
#include "core/css/CSSSegmentedFontFace.h"
#include "core/css/FontFace.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 CSSFontFace final : public NoBaseWillBeGarbageCollectedFinalized<CSSFontFace> {
public:
struct UnicodeRange;
class UnicodeRangeSet;
CSSFontFace(FontFace* fontFace, Vector<UnicodeRange>& ranges)
: m_ranges(ranges)
, m_segmentedFontFace(nullptr)
, m_fontFace(fontFace)
{
ASSERT(m_fontFace);
}
FontFace* fontFace() const { return m_fontFace; }
UnicodeRangeSet& ranges() { return m_ranges; }
void setSegmentedFontFace(CSSSegmentedFontFace*);
void clearSegmentedFontFace() { m_segmentedFontFace = nullptr; }
bool isValid() const { return !m_sources.isEmpty(); }
void addSource(PassOwnPtrWillBeRawPtr<CSSFontFaceSource>);
void didBeginLoad();
void fontLoaded(RemoteFontFaceSource*);
void fontLoadWaitLimitExceeded(RemoteFontFaceSource*);
PassRefPtr<SimpleFontData> getFontData(const FontDescription&);
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; }
bool contains(UChar32 c) const { return m_from <= c && c <= m_to; }
bool operator<(const UnicodeRange& other) const { return m_from < other.m_from; }
bool operator<(UChar32 c) const { return m_to < c; }
private:
UChar32 m_from;
UChar32 m_to;
};
class UnicodeRangeSet {
public:
explicit UnicodeRangeSet(const Vector<UnicodeRange>&);
bool contains(UChar32) const;
bool intersectsWith(const String&) const;
bool isEntireRange() const { return m_ranges.isEmpty(); }
size_t size() const { return m_ranges.size(); }
const UnicodeRange& rangeAt(size_t i) const { return m_ranges[i]; }
private:
Vector<UnicodeRange> m_ranges; // If empty, represents the whole code space.
};
FontFace::LoadStatus loadStatus() const { return m_fontFace->loadStatus(); }
bool maybeScheduleFontLoad(const FontDescription&, UChar32);
void load();
void load(const FontDescription&);
bool hadBlankText() { return isValid() && m_sources.first()->hadBlankText(); }
void trace(Visitor*);
private:
void setLoadStatus(FontFace::LoadStatus);
UnicodeRangeSet m_ranges;
RawPtrWillBeMember<CSSSegmentedFontFace> m_segmentedFontFace;
WillBeHeapDeque<OwnPtrWillBeMember<CSSFontFaceSource> > m_sources;
RawPtrWillBeMember<FontFace> m_fontFace;
};
}
#endif
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