chromium/third_party/blink/renderer/platform/fonts/font_fallback_iterator.cc

// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/351564777): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif

#include "third_party/blink/renderer/platform/fonts/font_fallback_iterator.h"

#include "base/memory/values_equivalent.h"
#include "third_party/blink/renderer/platform/fonts/font_cache.h"
#include "third_party/blink/renderer/platform/fonts/font_description.h"
#include "third_party/blink/renderer/platform/fonts/font_fallback_list.h"
#include "third_party/blink/renderer/platform/fonts/segmented_font_data.h"
#include "third_party/blink/renderer/platform/fonts/shaping/harfbuzz_face.h"
#include "third_party/blink/renderer/platform/fonts/simple_font_data.h"
#include "third_party/blink/renderer/platform/runtime_enabled_features.h"

namespace blink {

FontFallbackIterator::FontFallbackIterator(
    const FontDescription& description,
    FontFallbackList* fallback_list,
    FontFallbackPriority font_fallback_priority)
    : … { … }

void FontFallbackIterator::Reset() { … }

bool FontFallbackIterator::AlreadyLoadingRangeForHintChar(UChar32 hint_char) { … }

bool FontFallbackIterator::RangeSetContributesForHint(
    const HintCharList& hint_list,
    const FontDataForRangeSet* segmented_face) { … }

void FontFallbackIterator::WillUseRange(const AtomicString& family,
                                        const FontDataForRangeSet& range_set) { … }

FontDataForRangeSet* FontFallbackIterator::UniqueOrNext(
    FontDataForRangeSet* candidate,
    const HintCharList& hint_list) { … }

bool FontFallbackIterator::NeedsHintList() const { … }

FontDataForRangeSet* FontFallbackIterator::Next(const HintCharList& hint_list) { … }

const SimpleFontData* FontFallbackIterator::FallbackPriorityFont(UChar32 hint) { … }

static inline unsigned ChooseHintIndex(
    const FontFallbackIterator::HintCharList& hint_list) { … }

const SimpleFontData* FontFallbackIterator::UniqueSystemFontForHintList(
    const HintCharList& hint_list) { … }

bool FontFallbackIterator::operator==(const FontFallbackIterator& other) const { … }

}  // namespace blink