chromium/third_party/blink/renderer/core/html/canvas/text_metrics.cc

// Copyright 2017 The Chromium Authors
// 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/html/canvas/text_metrics.h"

#include "base/numerics/checked_math.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_baselines.h"
#include "third_party/blink/renderer/core/geometry/dom_rect_read_only.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
#include "third_party/blink/renderer/platform/fonts/character_range.h"
#include "third_party/blink/renderer/platform/fonts/font.h"
#include "third_party/blink/renderer/platform/fonts/font_metrics.h"
#include "third_party/blink/renderer/platform/fonts/shaping/harfbuzz_shaper.h"
#include "third_party/blink/renderer/platform/fonts/shaping/shape_result.h"
#include "third_party/blink/renderer/platform/fonts/shaping/shape_result_spacing.h"
#include "third_party/blink/renderer/platform/fonts/shaping/shape_result_view.h"
#include "third_party/blink/renderer/platform/runtime_enabled_features.h"
#include "third_party/blink/renderer/platform/text/bidi_paragraph.h"

namespace blink {

constexpr int kHangingAsPercentOfAscent = …;

float TextMetrics::GetFontBaseline(const TextBaseline& text_baseline,
                                   const SimpleFontData& font_data) { … }

void TextMetrics::Trace(Visitor* visitor) const { … }

TextMetrics::TextMetrics() : … { … }

TextMetrics::TextMetrics(const Font& font,
                         const TextDirection& direction,
                         const TextBaseline& baseline,
                         const TextAlign& align,
                         const String& text)
    : … { … }

namespace {
const ShapeResult* ShapeWord(const TextRun& word_run, const Font& font) { … }
}  // namespace

void TextMetrics::Update(const Font& font,
                         const TextDirection& direction,
                         const TextBaseline& baseline,
                         const TextAlign& align,
                         const String& text) { … }

void TextMetrics::ShapeTextIfNeeded() { … }

const HeapVector<Member<DOMRectReadOnly>> TextMetrics::getSelectionRects(
    uint32_t start,
    uint32_t end,
    ExceptionState& exception_state) { … }

const DOMRectReadOnly* TextMetrics::getActualBoundingBox(
    uint32_t start,
    uint32_t end,
    ExceptionState& exception_state) { … }

unsigned TextMetrics::caretPositionFromPoint(double x) { … }

}  // namespace blink