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/*
* 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 THE COPYRIGHT
* OWNER 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 FontFace_h
#define FontFace_h
#include "bindings/core/v8/ActiveScriptWrappable.h"
#include "bindings/core/v8/ScriptPromise.h"
#include "bindings/core/v8/ScriptPromiseProperty.h"
#include "bindings/core/v8/ScriptWrappable.h"
#include "core/CSSPropertyNames.h"
#include "core/css/CSSValue.h"
#include "core/dom/ContextLifecycleObserver.h"
#include "core/dom/DOMException.h"
#include "platform/fonts/FontTraits.h"
#include "wtf/text/WTFString.h"
namespace blink {
class CSSFontFace;
class CSSValue;
class DOMArrayBuffer;
class DOMArrayBufferView;
class Document;
class ExceptionState;
class FontFaceDescriptors;
class StringOrArrayBufferOrArrayBufferView;
class StylePropertySet;
class StyleRuleFontFace;
class WebTaskRunner;
class FontFace : public GarbageCollectedFinalized<FontFace>,
public ScriptWrappable,
public ActiveScriptWrappable<FontFace>,
public ContextLifecycleObserver {
DEFINE_WRAPPERTYPEINFO();
USING_GARBAGE_COLLECTED_MIXIN(FontFace);
WTF_MAKE_NONCOPYABLE(FontFace);
public:
enum LoadStatusType { Unloaded, Loading, Loaded, Error };
static FontFace* create(ExecutionContext*,
const AtomicString& family,
StringOrArrayBufferOrArrayBufferView&,
const FontFaceDescriptors&);
static FontFace* create(Document*, const StyleRuleFontFace*);
virtual ~FontFace();
const AtomicString& family() const { return m_family; }
String style() const;
String weight() const;
String stretch() const;
String unicodeRange() const;
String variant() const;
String featureSettings() const;
String display() const;
// FIXME: Changing these attributes should affect font matching.
void setFamily(ExecutionContext*, const AtomicString& s, ExceptionState&) {
m_family = s;
}
void setStyle(ExecutionContext*, const String&, ExceptionState&);
void setWeight(ExecutionContext*, const String&, ExceptionState&);
void setStretch(ExecutionContext*, const String&, ExceptionState&);
void setUnicodeRange(ExecutionContext*, const String&, ExceptionState&);
void setVariant(ExecutionContext*, const String&, ExceptionState&);
void setFeatureSettings(ExecutionContext*, const String&, ExceptionState&);
void setDisplay(ExecutionContext*, const String&, ExceptionState&);
String status() const;
ScriptPromise loaded(ScriptState* scriptState) {
return fontStatusPromise(scriptState);
}
ScriptPromise load(ScriptState*);
LoadStatusType loadStatus() const { return m_status; }
void setLoadStatus(LoadStatusType);
void setError(DOMException* = nullptr);
DOMException* error() const { return m_error; }
FontTraits traits() const;
CSSFontFace* cssFontFace() { return m_cssFontFace.get(); }
size_t approximateBlankCharacterCount() const;
DECLARE_VIRTUAL_TRACE();
bool hadBlankText() const;
class LoadFontCallback : public GarbageCollectedMixin {
public:
virtual ~LoadFontCallback() {}
virtual void notifyLoaded(FontFace*) = 0;
virtual void notifyError(FontFace*) = 0;
DEFINE_INLINE_VIRTUAL_TRACE() {}
};
void loadWithCallback(LoadFontCallback*);
void addCallback(LoadFontCallback*);
// ScriptWrappable:
bool hasPendingActivity() const final;
private:
static FontFace* create(ExecutionContext*,
const AtomicString& family,
DOMArrayBuffer* source,
const FontFaceDescriptors&);
static FontFace* create(ExecutionContext*,
const AtomicString& family,
DOMArrayBufferView*,
const FontFaceDescriptors&);
static FontFace* create(ExecutionContext*,
const AtomicString& family,
const String& source,
const FontFaceDescriptors&);
explicit FontFace(ExecutionContext*);
FontFace(ExecutionContext*,
const AtomicString& family,
const FontFaceDescriptors&);
void initCSSFontFace(Document*, const CSSValue* src);
void initCSSFontFace(const unsigned char* data, size_t);
void setPropertyFromString(const Document*,
const String&,
CSSPropertyID,
ExceptionState* = 0);
bool setPropertyFromStyle(const StylePropertySet&, CSSPropertyID);
bool setPropertyValue(const CSSValue*, CSSPropertyID);
bool setFamilyValue(const CSSValue&);
ScriptPromise fontStatusPromise(ScriptState*);
WebTaskRunner* getTaskRunner();
void runCallbacks();
using LoadedProperty = ScriptPromiseProperty<Member<FontFace>,
Member<FontFace>,
Member<DOMException>>;
AtomicString m_family;
String m_otsParseMessage;
Member<const CSSValue> m_style;
Member<const CSSValue> m_weight;
Member<const CSSValue> m_stretch;
Member<const CSSValue> m_unicodeRange;
Member<const CSSValue> m_variant;
Member<const CSSValue> m_featureSettings;
Member<const CSSValue> m_display;
LoadStatusType m_status;
Member<DOMException> m_error;
Member<LoadedProperty> m_loadedProperty;
Member<CSSFontFace> m_cssFontFace;
HeapVector<Member<LoadFontCallback>> m_callbacks;
};
using FontFaceArray = HeapVector<Member<FontFace>>;
} // namespace blink
#endif // FontFace_h
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