1// Copyright 2016 PDFium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6
7#include "core/fpdfapi/render/cpdf_type3glyphs.h"
8
9#include <map>
10
11#include "core/fxge/fx_font.h"
12
13CPDF_Type3Glyphs::CPDF_Type3Glyphs()
14    : m_TopBlueCount(0), m_BottomBlueCount(0) {}
15
16CPDF_Type3Glyphs::~CPDF_Type3Glyphs() {}
17
18static int _AdjustBlue(float pos, int& count, int blues[]) {
19  float min_distance = 1000000.0f;
20  int closest_pos = -1;
21  for (int i = 0; i < count; i++) {
22    float distance = fabs(pos - static_cast<float>(blues[i]));
23    if (distance < 1.0f * 80.0f / 100.0f && distance < min_distance) {
24      min_distance = distance;
25      closest_pos = i;
26    }
27  }
28  if (closest_pos >= 0)
29    return blues[closest_pos];
30  int new_pos = FXSYS_round(pos);
31  if (count == TYPE3_MAX_BLUES)
32    return new_pos;
33  blues[count++] = new_pos;
34  return new_pos;
35}
36
37void CPDF_Type3Glyphs::AdjustBlue(float top,
38                                  float bottom,
39                                  int& top_line,
40                                  int& bottom_line) {
41  top_line = _AdjustBlue(top, m_TopBlueCount, m_TopBlue);
42  bottom_line = _AdjustBlue(bottom, m_BottomBlueCount, m_BottomBlue);
43}
44