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// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_CSS_OFFSCREEN_FONT_SELECTOR_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_CSS_OFFSCREEN_FONT_SELECTOR_H_
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/css/font_face_cache.h"
#include "third_party/blink/renderer/platform/fonts/font_selector.h"
#include "third_party/blink/renderer/platform/fonts/generic_font_family_settings.h"
#include "third_party/blink/renderer/platform/heap/handle.h"
#include "third_party/blink/renderer/platform/wtf/forward.h"
#include "third_party/blink/renderer/platform/wtf/hash_map.h"
#include "third_party/blink/renderer/platform/wtf/hash_set.h"
namespace blink {
class ExecutionContext;
class FontDescription;
class CORE_EXPORT OffscreenFontSelector : public FontSelector {
public:
static OffscreenFontSelector* Create(ExecutionContext* context) {
return new OffscreenFontSelector(context);
}
~OffscreenFontSelector() override;
unsigned Version() const override { return 1; }
void ReportNotDefGlyph() const override;
scoped_refptr<FontData> GetFontData(const FontDescription&,
const AtomicString&) override;
void WillUseFontData(const FontDescription&,
const AtomicString& family,
const String& text) override;
void WillUseRange(const FontDescription&,
const AtomicString& family_name,
const FontDataForRangeSet&) override;
void RegisterForInvalidationCallbacks(FontSelectorClient*) override;
void UnregisterForInvalidationCallbacks(FontSelectorClient*) override;
const GenericFontFamilySettings& GetGenericFontFamilySettings() const {
return generic_font_family_settings_;
}
void FontCacheInvalidated() override;
void FontFaceInvalidated() override;
void UpdateGenericFontFamilySettings(const GenericFontFamilySettings&);
FontFaceCache* GetFontFaceCache() override { return &font_face_cache_; }
bool IsPlatformFamilyMatchAvailable(
const FontDescription&,
const AtomicString& passed_family) override;
ExecutionContext* GetExecutionContext() const override {
return execution_context_;
}
void Trace(blink::Visitor*) override;
protected:
explicit OffscreenFontSelector(ExecutionContext*);
void DispatchInvalidationCallbacks();
private:
GenericFontFamilySettings generic_font_family_settings_;
FontFaceCache font_face_cache_;
Member<ExecutionContext> execution_context_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_CSS_OFFSCREEN_FONT_SELECTOR_H_