line_metrics.cc

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// Copyright 2013 The Flutter 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 "flutter/impeller/toolkit/interop/line_metrics.h"
 
namespace impeller::interop {
 
LineMetrics::LineMetrics(const std::vector<txt::LineMetrics>& metrics) {
  // There aren't any guarantees (documented or otherwise) that metrics will
  // have line numbers that are sorted or contiguous.
  for (const auto& metric : metrics) {
    metrics_[metric.line_number] = metric;
  }
}
 
LineMetrics::~LineMetrics() = default;
 
double LineMetrics::GetAscent(size_t line) const {
  return GetLine(line).ascent;
}
 
double LineMetrics::GetUnscaledAscent(size_t line) const {
  return GetLine(line).unscaled_ascent;
}
 
double LineMetrics::GetDescent(size_t line) const {
  return GetLine(line).descent;
}
 
double LineMetrics::GetBaseline(size_t line) const {
  return GetLine(line).baseline;
}
 
bool LineMetrics::IsHardbreak(size_t line) const {
  return GetLine(line).hard_break;
}
 
double LineMetrics::GetWidth(size_t line) const {
  return GetLine(line).width;
}
 
double LineMetrics::GetHeight(size_t line) const {
  return GetLine(line).height;
}
 
double LineMetrics::GetLeft(size_t line) const {
  return GetLine(line).left;
}
 
size_t LineMetrics::GetCodeUnitStartIndex(size_t line) const {
  return GetLine(line).start_index;
}
 
size_t LineMetrics::GetCodeUnitEndIndex(size_t line) const {
  return GetLine(line).end_index;
}
 
size_t LineMetrics::GetCodeUnitEndIndexExcludingWhitespace(size_t line) const {
  return GetLine(line).end_excluding_whitespace;
}
 
size_t LineMetrics::GetCodeUnitEndIndexIncludingNewline(size_t line) const {
  return GetLine(line).end_including_newline;
}
 
const txt::LineMetrics& LineMetrics::GetLine(size_t line) const {
  auto found = metrics_.find(line);
  if (found != metrics_.end()) {
    return found->second;
  }
  static txt::LineMetrics kDefaultMetrics = {};
  return kDefaultMetrics;
}
 
}  // namespace impeller::interop