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/*
* Copyright (C) 2007, 2008, 2016 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 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 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 "FontFeatureSettings.h"
#include "TextFlags.h"
#include <memory>
#include <wtf/Forward.h>
#include <wtf/HashSet.h>
#include <wtf/PassRefPtr.h>
#include <wtf/RefCounted.h>
#include <wtf/Vector.h>
namespace WebCore {
class CSSSegmentedFontFace;
class CSSValue;
class CSSValueList;
class FontDescription;
class Font;
class FontFace;
// FIXME: This class does not need to be reference counted.
class CSSFontFace final : public RefCounted<CSSFontFace> {
public:
static Ref<CSSFontFace> create(CSSFontSelector& fontSelector, FontFace* wrapper = nullptr, bool isLocalFallback = false)
{
return adoptRef(*new CSSFontFace(fontSelector, wrapper, isLocalFallback));
}
virtual ~CSSFontFace();
bool setFamilies(CSSValue&);
bool setStyle(CSSValue&);
bool setWeight(CSSValue&);
bool setUnicodeRange(CSSValue&);
bool setVariantLigatures(CSSValue&);
bool setVariantPosition(CSSValue&);
bool setVariantCaps(CSSValue&);
bool setVariantNumeric(CSSValue&);
bool setVariantAlternates(CSSValue&);
bool setVariantEastAsian(CSSValue&);
bool setFeatureSettings(CSSValue&);
enum class Status;
struct UnicodeRange;
const CSSValueList* families() const { return m_families.get(); }
FontTraitsMask traitsMask() const { return m_traitsMask; }
const Vector<UnicodeRange>& ranges() const { return m_ranges; }
const FontFeatureSettings& featureSettings() const { return m_featureSettings; }
const FontVariantSettings& variantSettings() const { return m_variantSettings; }
void setVariantSettings(const FontVariantSettings& variantSettings) { m_variantSettings = variantSettings; }
void setTraitsMask(FontTraitsMask traitsMask) { m_traitsMask = traitsMask; }
bool isLocalFallback() const { return m_isLocalFallback; }
Status status() const { return m_status; }
class Client;
void addClient(Client&);
void removeClient(Client&);
bool allSourcesFailed() const;
void adoptSource(std::unique_ptr<CSSFontFaceSource>&&);
void sourcesPopulated() { m_sourcesPopulated = true; }
void fontLoaded(CSSFontFaceSource&);
void load();
RefPtr<Font> font(const FontDescription&, bool syntheticBold, bool syntheticItalic);
class Client {
public:
virtual ~Client() { }
virtual void fontLoaded(CSSFontFace&) { };
virtual void stateChanged(CSSFontFace&, Status oldState, Status newState) { UNUSED_PARAM(oldState); UNUSED_PARAM(newState); };
};
// Pending => Loading => TimedOut
// || \\ // ||
// || \\ // ||
// || \\// ||
// || // ||
// || //\\ ||
// || // \\ ||
// \/ \/ \/ \/
// Success Failure
enum class Status {
Pending,
Loading,
TimedOut,
Success,
Failure
};
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;
};
FontFace* wrapper() const { return m_wrapper; }
#if ENABLE(SVG_FONTS)
bool hasSVGFontFaceSource() const;
#endif
private:
CSSFontFace(CSSFontSelector&, FontFace*, bool isLocalFallback);
size_t pump();
void setStatus(Status);
RefPtr<CSSValueList> m_families;
FontTraitsMask m_traitsMask { static_cast<FontTraitsMask>(FontStyleNormalMask | FontWeight400Mask) };
Vector<UnicodeRange> m_ranges;
HashSet<Client*> m_clients;
Ref<CSSFontSelector> m_fontSelector;
FontFace* m_wrapper;
FontFeatureSettings m_featureSettings;
FontVariantSettings m_variantSettings;
Vector<std::unique_ptr<CSSFontFaceSource>> m_sources;
Status m_status { Status::Pending };
bool m_isLocalFallback { false };
bool m_sourcesPopulated { false };
};
}
#endif
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