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/*
* Copyright (C) 2007, 2008, 2011 Apple Inc. All rights reserved.
* Copyright (C) 2013 Google 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 FontFaceCache_h
#define FontFaceCache_h
#include "platform/heap/Handle.h"
#include "wtf/Forward.h"
#include "wtf/HashMap.h"
#include "wtf/ListHashSet.h"
#include "wtf/text/StringHash.h"
namespace blink {
class FontFace;
class CSSFontSelector;
class CSSSegmentedFontFace;
class FontDescription;
class StyleRuleFontFace;
class FontFaceCache final {
DISALLOW_NEW();
public:
FontFaceCache();
// FIXME: Remove CSSFontSelector as argument. Passing CSSFontSelector here is
// a result of egregious spaghettification in FontFace/FontFaceSet.
void add(CSSFontSelector*, const StyleRuleFontFace*, FontFace*);
void remove(const StyleRuleFontFace*);
void clearCSSConnected();
void clearAll();
void addFontFace(CSSFontSelector*, FontFace*, bool cssConnected);
void removeFontFace(FontFace*, bool cssConnected);
// FIXME: It's sort of weird that add/remove uses StyleRuleFontFace* as key,
// but this function uses FontDescription/family pair.
CSSSegmentedFontFace* get(const FontDescription&, const AtomicString& family);
const HeapListHashSet<Member<FontFace>>& cssConnectedFontFaces() const {
return m_cssConnectedFontFaces;
}
unsigned version() const { return m_version; }
void incrementVersion() { ++m_version; }
DECLARE_TRACE();
private:
using TraitsMap = HeapHashMap<unsigned, Member<CSSSegmentedFontFace>>;
using FamilyToTraitsMap =
HeapHashMap<String, Member<TraitsMap>, CaseFoldingHash>;
using StyleRuleToFontFace =
HeapHashMap<Member<const StyleRuleFontFace>, Member<FontFace>>;
FamilyToTraitsMap m_fontFaces;
FamilyToTraitsMap m_fonts;
StyleRuleToFontFace m_styleRuleToFontFace;
HeapListHashSet<Member<FontFace>> m_cssConnectedFontFaces;
// FIXME: See if this could be ditched
// Used to compare Font instances, and the usage seems suspect.
unsigned m_version;
};
} // namespace blink
#endif
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