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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 THIRD_PARTY_BLINK_RENDERER_CORE_CSS_FONT_FACE_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_CSS_FONT_FACE_H_
#include "third_party/blink/renderer/bindings/core/v8/active_script_wrappable.h"
#include "third_party/blink/renderer/bindings/core/v8/script_promise.h"
#include "third_party/blink/renderer/bindings/core/v8/script_promise_property.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/css/css_value.h"
#include "third_party/blink/renderer/core/css/font_display.h"
#include "third_party/blink/renderer/core/css/parser/at_rule_descriptors.h"
#include "third_party/blink/renderer/core/dom/dom_exception.h"
#include "third_party/blink/renderer/core/execution_context/execution_context_lifecycle_observer.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
#include "third_party/blink/renderer/platform/fonts/font_selection_types.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
namespace blink {
class CSSFontFace;
class CSSFontFamilyValue;
class CSSPropertyValueSet;
class CSSValue;
class Document;
class CSSLengthResolver;
class ExceptionState;
class MediaValues;
class FontFaceDescriptors;
class StyleRuleFontFace;
class V8FontFaceLoadStatus;
class V8UnionArrayBufferOrArrayBufferViewOrString;
struct FontMetricsOverride;
class CORE_EXPORT FontFace : public ScriptWrappable,
public ActiveScriptWrappable<FontFace>,
public ExecutionContextClient {
DEFINE_WRAPPERTYPEINFO();
public:
enum LoadStatusType : uint8_t { kUnloaded, kLoading, kLoaded, kError };
static FontFace* Create(
ExecutionContext* execution_context,
const AtomicString& family,
const V8UnionArrayBufferOrArrayBufferViewOrString* source,
const FontFaceDescriptors* descriptors);
static FontFace* Create(Document*,
const StyleRuleFontFace*,
bool is_user_style);
FontFace(ExecutionContext*, const StyleRuleFontFace*, bool is_user_style);
FontFace(ExecutionContext*,
const AtomicString& family,
const FontFaceDescriptors*);
FontFace(const FontFace&) = delete;
FontFace& operator=(const FontFace&) = delete;
~FontFace() override;
const AtomicString& family() const { return family_; }
String style() const;
String weight() const;
String stretch() const;
String unicodeRange() const;
String variant() const;
String featureSettings() const;
String display() const;
String ascentOverride() const;
String descentOverride() const;
String lineGapOverride() const;
String sizeAdjust() const;
// FIXME: Changing these attributes should affect font matching.
void setFamily(ExecutionContext*, const AtomicString& s, ExceptionState&) {
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&);
void setAscentOverride(ExecutionContext*, const String&, ExceptionState&);
void setDescentOverride(ExecutionContext*, const String&, ExceptionState&);
void setLineGapOverride(ExecutionContext*, const String&, ExceptionState&);
void setSizeAdjust(ExecutionContext*, const String&, ExceptionState&);
V8FontFaceLoadStatus status() const;
ScriptPromise<FontFace> loaded(ScriptState* script_state) {
return FontStatusPromise(script_state);
}
ScriptPromise<FontFace> load(ScriptState*);
LoadStatusType LoadStatus() const { return status_; }
void SetLoadStatus(LoadStatusType);
void SetError(DOMException* = nullptr);
DOMException* GetError() const { return error_.Get(); }
FontSelectionCapabilities GetFontSelectionCapabilities() const;
CSSFontFace* CssFontFace() { return css_font_face_.Get(); }
size_t ApproximateBlankCharacterCount() const;
FontDisplay GetFontDisplay() const;
void Trace(Visitor*) const override;
bool HadBlankText() const;
class CORE_EXPORT LoadFontCallback : public GarbageCollectedMixin {
public:
virtual ~LoadFontCallback() = default;
virtual void NotifyLoaded(FontFace*) = 0;
virtual void NotifyError(FontFace*) = 0;
void Trace(Visitor* visitor) const override {}
};
void LoadWithCallback(LoadFontCallback*);
void AddCallback(LoadFontCallback*);
void DidBeginImperativeLoad();
// ScriptWrappable:
bool HasPendingActivity() const final;
bool HasFontMetricsOverride() const {
return ascent_override_ || descent_override_ || line_gap_override_ ||
advance_override_;
}
FontMetricsOverride GetFontMetricsOverride() const;
bool HasSizeAdjust() const { return size_adjust_ != nullptr; }
float GetSizeAdjust() const;
Document* GetDocument() const;
const StyleRuleFontFace* GetStyleRule() const { return style_rule_.Get(); }
bool IsUserStyle() const { return is_user_style_; }
const CSSLengthResolver& EnsureLengthResolver() const;
private:
static FontFace* Create(ExecutionContext*,
const AtomicString& family,
base::span<const uint8_t> data,
const FontFaceDescriptors*);
static FontFace* Create(ExecutionContext*,
const AtomicString& family,
const String& source,
const FontFaceDescriptors*);
void InitCSSFontFace(ExecutionContext*, const CSSValue& src);
void InitCSSFontFace(ExecutionContext*, base::span<const uint8_t> data);
void SetPropertyFromString(const ExecutionContext*,
const String&,
AtRuleDescriptorID,
ExceptionState* = nullptr);
bool SetPropertyFromStyle(const CSSPropertyValueSet&, AtRuleDescriptorID);
bool SetPropertyValue(const CSSValue*, AtRuleDescriptorID);
void SetFamilyValue(const CSSFontFamilyValue&);
ScriptPromise<FontFace> FontStatusPromise(ScriptState*);
void RunCallbacks();
using LoadedProperty = ScriptPromiseProperty<FontFace, DOMException>;
HeapVector<Member<LoadFontCallback>> callbacks_;
AtomicString family_;
String ots_parse_message_;
Member<const CSSValue> style_;
Member<const CSSValue> weight_;
Member<const CSSValue> stretch_;
Member<const CSSValue> unicode_range_;
Member<const CSSValue> variant_;
Member<const CSSValue> feature_settings_;
Member<const CSSValue> display_;
Member<const CSSValue> ascent_override_;
Member<const CSSValue> descent_override_;
Member<const CSSValue> line_gap_override_;
Member<const CSSValue> advance_override_;
Member<const CSSValue> size_adjust_;
Member<DOMException> error_;
Member<LoadedProperty> loaded_property_;
Member<CSSFontFace> css_font_face_;
Member<const StyleRuleFontFace> style_rule_;
LoadStatusType status_;
// Note that we will also need to distinguish font faces in different tree
// scopes when we allow @font-face in shadow DOM. See crbug.com/336876.
bool is_user_style_ = false;
// Global media values to resolve calc().
mutable Member<const MediaValues> media_values_;
};
using FontFaceArray = HeapVector<Member<FontFace>>;
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_CSS_FONT_FACE_H_
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