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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.
#include "third_party/blink/renderer/core/css/offscreen_font_selector.h"
#include "build/build_config.h"
#include "third_party/blink/renderer/core/css/css_segmented_font_face.h"
#include "third_party/blink/renderer/core/css/css_value_list.h"
#include "third_party/blink/renderer/core/css/resolver/style_resolver.h"
#include "third_party/blink/renderer/core/frame/local_frame.h"
#include "third_party/blink/renderer/core/frame/settings.h"
#include "third_party/blink/renderer/core/loader/frame_loader.h"
#include "third_party/blink/renderer/platform/fonts/font_cache.h"
#include "third_party/blink/renderer/platform/fonts/font_matching_metrics.h"
#include "third_party/blink/renderer/platform/fonts/font_selector_client.h"
#include "third_party/blink/renderer/platform/fonts/simple_font_data.h"
#include "third_party/blink/renderer/platform/instrumentation/use_counter.h"
#include "third_party/blink/renderer/platform/wtf/text/atomic_string.h"
namespace blink {
OffscreenFontSelector::OffscreenFontSelector(WorkerGlobalScope* worker)
: font_face_cache_(MakeGarbageCollected<FontFaceCache>()), worker_(worker) {
DCHECK(worker);
FontCache::GetFontCache()->AddClient(this);
}
OffscreenFontSelector::~OffscreenFontSelector() = default;
void OffscreenFontSelector::UpdateGenericFontFamilySettings(
const GenericFontFamilySettings& settings) {
generic_font_family_settings_ = settings;
}
void OffscreenFontSelector::RegisterForInvalidationCallbacks(
FontSelectorClient* client) {}
void OffscreenFontSelector::UnregisterForInvalidationCallbacks(
FontSelectorClient* client) {}
scoped_refptr<FontData> OffscreenFontSelector::GetFontData(
const FontDescription& font_description,
const AtomicString& family_name) {
if (CSSSegmentedFontFace* face =
font_face_cache_->Get(font_description, family_name)) {
worker_->GetFontMatchingMetrics()->ReportWebFontFamily(family_name);
return face->GetFontData(font_description);
}
worker_->GetFontMatchingMetrics()->ReportSystemFontFamily(family_name);
// Try to return the correct font based off our settings, in case we were
// handed the generic font family name.
AtomicString settings_family_name = FamilyNameFromSettings(
generic_font_family_settings_, font_description, family_name);
if (settings_family_name.IsEmpty())
return nullptr;
worker_->GetFontMatchingMetrics()->ReportFontFamilyLookupByGenericFamily(
family_name, font_description.GetScript(),
font_description.GenericFamily(), settings_family_name);
auto font_data = FontCache::GetFontCache()->GetFontData(font_description,
settings_family_name);
worker_->GetFontMatchingMetrics()->ReportFontLookupByUniqueOrFamilyName(
settings_family_name, font_description, font_data.get());
return font_data;
}
void OffscreenFontSelector::WillUseFontData(
const FontDescription& font_description,
const AtomicString& family,
const String& text) {
CSSSegmentedFontFace* face = font_face_cache_->Get(font_description, family);
if (face)
face->WillUseFontData(font_description, text);
}
void OffscreenFontSelector::WillUseRange(
const FontDescription& font_description,
const AtomicString& family,
const FontDataForRangeSet& range_set) {
CSSSegmentedFontFace* face = font_face_cache_->Get(font_description, family);
if (face)
face->WillUseRange(font_description, range_set);
}
bool OffscreenFontSelector::IsPlatformFamilyMatchAvailable(
const FontDescription& font_description,
const AtomicString& passed_family) {
AtomicString family = FamilyNameFromSettings(generic_font_family_settings_,
font_description, passed_family);
if (family.IsEmpty())
family = passed_family;
return FontCache::GetFontCache()->IsPlatformFamilyMatchAvailable(
font_description, family);
}
void OffscreenFontSelector::ReportNotDefGlyph() const {}
void OffscreenFontSelector::ReportSuccessfulFontFamilyMatch(
const AtomicString& font_family_name) {
DCHECK(worker_);
worker_->GetFontMatchingMetrics()->ReportSuccessfulFontFamilyMatch(
font_family_name);
}
void OffscreenFontSelector::ReportFailedFontFamilyMatch(
const AtomicString& font_family_name) {
DCHECK(worker_);
worker_->GetFontMatchingMetrics()->ReportFailedFontFamilyMatch(
font_family_name);
}
void OffscreenFontSelector::ReportSuccessfulLocalFontMatch(
const AtomicString& font_name) {
DCHECK(worker_);
worker_->GetFontMatchingMetrics()->ReportSuccessfulLocalFontMatch(font_name);
}
void OffscreenFontSelector::ReportFailedLocalFontMatch(
const AtomicString& font_name) {
DCHECK(worker_);
worker_->GetFontMatchingMetrics()->ReportFailedLocalFontMatch(font_name);
}
void OffscreenFontSelector::ReportFontLookupByUniqueOrFamilyName(
const AtomicString& name,
const FontDescription& font_description,
SimpleFontData* resulting_font_data) {
DCHECK(worker_);
worker_->GetFontMatchingMetrics()->ReportFontLookupByUniqueOrFamilyName(
name, font_description, resulting_font_data);
}
void OffscreenFontSelector::ReportFontLookupByUniqueNameOnly(
const AtomicString& name,
const FontDescription& font_description,
SimpleFontData* resulting_font_data,
bool is_loading_fallback) {
DCHECK(worker_);
worker_->GetFontMatchingMetrics()->ReportFontLookupByUniqueNameOnly(
name, font_description, resulting_font_data, is_loading_fallback);
}
void OffscreenFontSelector::ReportFontLookupByFallbackCharacter(
UChar32 fallback_character,
FontFallbackPriority fallback_priority,
const FontDescription& font_description,
SimpleFontData* resulting_font_data) {
DCHECK(worker_);
worker_->GetFontMatchingMetrics()->ReportFontLookupByFallbackCharacter(
fallback_character, fallback_priority, font_description,
resulting_font_data);
}
void OffscreenFontSelector::ReportLastResortFallbackFontLookup(
const FontDescription& font_description,
SimpleFontData* resulting_font_data) {
DCHECK(worker_);
worker_->GetFontMatchingMetrics()->ReportLastResortFallbackFontLookup(
font_description, resulting_font_data);
}
void OffscreenFontSelector::FontCacheInvalidated() {
font_face_cache_->IncrementVersion();
}
void OffscreenFontSelector::FontFaceInvalidated(FontInvalidationReason) {
FontCacheInvalidated();
}
void OffscreenFontSelector::Trace(Visitor* visitor) const {
visitor->Trace(worker_);
visitor->Trace(font_face_cache_);
FontSelector::Trace(visitor);
}
} // namespace blink
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