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annotate OrthancFramework/Sources/Images/Font.cpp @ 5476:3b45bce71fcc

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Orthanc Framework 1.12.2
author Alain Mazy <am@osimis.io>
date Tue, 19 Dec 2023 11:45:37 +0100
parents 47334eeaaa1a
children 48b8dae6dc77
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
1900
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2023 Osimis S.A., Belgium
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6 * Copyright (C) 2021-2023 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
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7 *
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8 * This program is free software: you can redistribute it and/or
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9 * modify it under the terms of the GNU Lesser General Public License
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10 * as published by the Free Software Foundation, either version 3 of
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11 * the License, or (at your option) any later version.
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12 *
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13 * This program is distributed in the hope that it will be useful, but
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14 * WITHOUT ANY WARRANTY; without even the implied warranty of
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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16 * Lesser General Public License for more details.
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17 *
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18 * You should have received a copy of the GNU Lesser General Public
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19 * License along with this program. If not, see
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20 * <http://www.gnu.org/licenses/>.
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21 **/
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22
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23
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24 #include "../PrecompiledHeaders.h"
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25 #include "Font.h"
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26
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27 #if !defined(ORTHANC_ENABLE_LOCALE)
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28 # error ORTHANC_ENABLE_LOCALE must be defined to use this file
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29 #endif
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30
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31 #if ORTHANC_SANDBOXED == 0
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32 # include "../SystemToolbox.h"
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33 #endif
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34
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35 #include "../OrthancException.h"
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36 #include "../Toolbox.h"
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37 #include "Image.h"
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38 #include "ImageProcessing.h"
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39
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40 #include <cassert>
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41 #include <stdio.h>
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42 #include <memory>
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43 #include <boost/lexical_cast.hpp>
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44
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45 namespace Orthanc
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46 {
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47 Font::Font() :
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48 size_(0),
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49 maxHeight_(0)
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50 {
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51 }
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52
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53
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54 Font::~Font()
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55 {
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56 for (Characters::iterator it = characters_.begin();
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57 it != characters_.end(); ++it)
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58 {
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59 delete it->second;
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60 }
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61 }
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62
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63
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64 void Font::LoadFromMemory(const std::string& font)
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65 {
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66 Json::Value v;
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67 if (!Toolbox::ReadJson(v, font) ||
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68 v.type() != Json::objectValue ||
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69 !v.isMember("Name") ||
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70 !v.isMember("Size") ||
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71 !v.isMember("Characters") ||
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72 v["Name"].type() != Json::stringValue ||
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73 v["Size"].type() != Json::intValue ||
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74 v["Characters"].type() != Json::objectValue)
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75 {
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76 throw OrthancException(ErrorCode_BadFont);
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77 }
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78
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79 name_ = v["Name"].asString();
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80 size_ = v["Size"].asUInt();
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81 maxHeight_ = 0;
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82
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83 Json::Value::Members characters = v["Characters"].getMemberNames();
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84
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85 for (size_t i = 0; i < characters.size(); i++)
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86 {
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87 const Json::Value& info = v["Characters"][characters[i]];
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88 if (info.type() != Json::objectValue ||
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89 !info.isMember("Advance") ||
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90 !info.isMember("Bitmap") ||
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91 !info.isMember("Height") ||
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92 !info.isMember("Top") ||
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93 !info.isMember("Width") ||
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94 info["Advance"].type() != Json::intValue ||
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95 info["Bitmap"].type() != Json::arrayValue ||
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96 info["Height"].type() != Json::intValue ||
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97 info["Top"].type() != Json::intValue ||
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98 info["Width"].type() != Json::intValue)
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99 {
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100 throw OrthancException(ErrorCode_BadFont);
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101 }
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102
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103 std::unique_ptr<Character> c(new Character);
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104
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105 c->advance_ = info["Advance"].asUInt();
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106 c->height_ = info["Height"].asUInt();
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107 c->top_ = info["Top"].asUInt();
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108 c->width_ = info["Width"].asUInt();
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109 c->bitmap_.resize(info["Bitmap"].size());
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110
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111 if (c->height_ > maxHeight_)
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112 {
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113 maxHeight_ = c->height_;
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114 }
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115
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116 for (Json::Value::ArrayIndex j = 0; j < info["Bitmap"].size(); j++)
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117 {
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118 if (info["Bitmap"][j].type() != Json::intValue)
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119 {
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120 throw OrthancException(ErrorCode_BadFont);
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121 }
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122
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123 int value = info["Bitmap"][j].asInt();
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124 if (value < 0 || value > 255)
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125 {
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126 throw OrthancException(ErrorCode_BadFont);
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127 }
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128
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129 c->bitmap_[j] = static_cast<uint8_t>(value);
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130 }
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131
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132 int index = boost::lexical_cast<int>(characters[i]);
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133 if (index < 0 || index > 255)
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134 {
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135 throw OrthancException(ErrorCode_BadFont);
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136 }
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137
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138 characters_[static_cast<char>(index)] = c.release();
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139 }
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140 }
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141
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142
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143 #if ORTHANC_SANDBOXED == 0
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144 void Font::LoadFromFile(const std::string& path)
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145 {
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146 std::string font;
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147 SystemToolbox::ReadFile(font, path);
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148 LoadFromMemory(font);
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149 }
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150 #endif
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151
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152 const std::string &Font::GetName() const
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153 {
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154 return name_;
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155 }
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156
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157 unsigned int Font::GetSize() const
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158 {
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159 return size_;
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160 }
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161
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162
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163 static unsigned int MyMin(unsigned int a,
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164 unsigned int b)
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165 {
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166 return a < b ? a : b;
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167 }
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168
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169
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170 void Font::DrawCharacter(ImageAccessor& target,
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171 const Character& character,
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172 int x,
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173 int y,
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174 const uint8_t color[4]) const
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175 {
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176 // Compute the bounds of the character
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177 if (x >= static_cast<int>(target.GetWidth()) ||
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178 y >= static_cast<int>(target.GetHeight()))
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179 {
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180 // The character is out of the image
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181 return;
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182 }
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183
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184 unsigned int left = x < 0 ? -x : 0;
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185 unsigned int top = y < 0 ? -y : 0;
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186 unsigned int width = MyMin(character.width_, target.GetWidth() - x);
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187 unsigned int height = MyMin(character.height_, target.GetHeight() - y);
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188
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189 unsigned int bpp = target.GetBytesPerPixel();
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190
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191 // Blit the font bitmap OVER the target image
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192 // https://en.wikipedia.org/wiki/Alpha_compositing
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193
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194 for (unsigned int cy = top; cy < height; cy++)
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195 {
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196 uint8_t* p = reinterpret_cast<uint8_t*>(target.GetRow(y + cy)) + (x + left) * bpp;
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197 unsigned int pos = cy * character.width_ + left;
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198
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199 switch (target.GetFormat())
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200 {
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201 case PixelFormat_Grayscale8:
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202 {
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203 assert(bpp == 1);
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204 for (unsigned int cx = left; cx < width; cx++, pos++, p++)
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205 {
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206 uint16_t alpha = character.bitmap_[pos];
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207 uint16_t value = alpha * static_cast<uint16_t>(color[0]) + (255 - alpha) * static_cast<uint16_t>(*p);
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208 *p = static_cast<uint8_t>(value >> 8);
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209 }
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210
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211 break;
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212 }
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213
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214 case PixelFormat_RGB24:
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215 {
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216 assert(bpp == 3);
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217 for (unsigned int cx = left; cx < width; cx++, pos++, p += 3)
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218 {
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219 uint16_t alpha = character.bitmap_[pos];
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220 for (uint8_t i = 0; i < 3; i++)
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221 {
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222 uint16_t value = alpha * static_cast<uint16_t>(color[i]) + (255 - alpha) * static_cast<uint16_t>(p[i]);
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223 p[i] = static_cast<uint8_t>(value >> 8);
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224 }
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225 }
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226
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227 break;
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228 }
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229
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230 case PixelFormat_RGBA32:
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231 case PixelFormat_BGRA32:
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232 {
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233 assert(bpp == 4);
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234
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235 for (unsigned int cx = left; cx < width; cx++, pos++, p += 4)
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236 {
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237 float alpha = static_cast<float>(character.bitmap_[pos]) / 255.0f;
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238 float beta = (1.0f - alpha) * static_cast<float>(p[3]) / 255.0f;
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239 float denom = 1.0f / (alpha + beta);
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240
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241 for (uint8_t i = 0; i < 3; i++)
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242 {
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243 p[i] = static_cast<uint8_t>((alpha * static_cast<float>(color[i]) +
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244 beta * static_cast<float>(p[i])) * denom);
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245 }
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246
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247 p[3] = static_cast<uint8_t>(255.0f * (alpha + beta));
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248 }
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diff changeset
249
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250 break;
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251 }
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252
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253 default:
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254 throw OrthancException(ErrorCode_NotImplemented);
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diff changeset
255 }
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256 }
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257
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parents:
diff changeset
258 }
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259
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260
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261 void Font::DrawInternal(ImageAccessor& target,
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262 const std::string& utf8,
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diff changeset
263 int x,
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diff changeset
264 int y,
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265 const uint8_t color[4]) const
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266 {
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267 if (target.GetFormat() != PixelFormat_Grayscale8 &&
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268 target.GetFormat() != PixelFormat_RGB24 &&
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diff changeset
269 target.GetFormat() != PixelFormat_RGBA32 &&
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diff changeset
270 target.GetFormat() != PixelFormat_BGRA32)
1610
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271 {
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272 throw OrthancException(ErrorCode_NotImplemented);
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273 }
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274
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275 int a = x;
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276
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277 #if ORTHANC_ENABLE_LOCALE == 1
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278 std::string s = Toolbox::ConvertFromUtf8(utf8, Encoding_Latin1);
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diff changeset
279 #else
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280 // If the locale support is disabled, simply drop non-ASCII
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281 // characters from the source UTF-8 string
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diff changeset
282 std::string s = Toolbox::ConvertToAscii(utf8);
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diff changeset
283 #endif
1610
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284
2dff2bdffdb8 font support within Orthanc
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diff changeset
285 for (size_t i = 0; i < s.size(); i++)
2dff2bdffdb8 font support within Orthanc
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diff changeset
286 {
2dff2bdffdb8 font support within Orthanc
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diff changeset
287 if (s[i] == '\n')
2dff2bdffdb8 font support within Orthanc
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diff changeset
288 {
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diff changeset
289 // Go to the next line
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290 a = x;
2dff2bdffdb8 font support within Orthanc
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291 y += maxHeight_ + 1;
2dff2bdffdb8 font support within Orthanc
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diff changeset
292 }
2dff2bdffdb8 font support within Orthanc
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diff changeset
293 else
2dff2bdffdb8 font support within Orthanc
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diff changeset
294 {
2dff2bdffdb8 font support within Orthanc
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diff changeset
295 Characters::const_iterator c = characters_.find(s[i]);
2dff2bdffdb8 font support within Orthanc
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diff changeset
296 if (c != characters_.end())
2dff2bdffdb8 font support within Orthanc
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diff changeset
297 {
2dff2bdffdb8 font support within Orthanc
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diff changeset
298 DrawCharacter(target, *c->second, a, y + static_cast<int>(c->second->top_), color);
2dff2bdffdb8 font support within Orthanc
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diff changeset
299 a += c->second->advance_;
2dff2bdffdb8 font support within Orthanc
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diff changeset
300 }
2dff2bdffdb8 font support within Orthanc
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parents:
diff changeset
301 }
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parents:
diff changeset
302 }
2dff2bdffdb8 font support within Orthanc
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parents:
diff changeset
303 }
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parents:
diff changeset
304
2dff2bdffdb8 font support within Orthanc
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parents:
diff changeset
305
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diff changeset
306 void Font::Draw(ImageAccessor& target,
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diff changeset
307 const std::string& utf8,
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diff changeset
308 int x,
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diff changeset
309 int y,
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diff changeset
310 uint8_t grayscale) const
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311 {
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312 uint8_t color[4] = { grayscale, grayscale, grayscale, 255 };
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diff changeset
313 DrawInternal(target, utf8, x, y, color);
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314 }
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parents:
diff changeset
315
2dff2bdffdb8 font support within Orthanc
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parents:
diff changeset
316
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diff changeset
317 void Font::Draw(ImageAccessor& target,
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diff changeset
318 const std::string& utf8,
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diff changeset
319 int x,
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diff changeset
320 int y,
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diff changeset
321 uint8_t r,
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diff changeset
322 uint8_t g,
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diff changeset
323 uint8_t b) const
1610
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parents:
diff changeset
324 {
2853
52b017d22a4f New URI: "/studies/.../merge" to merge a study
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diff changeset
325 uint8_t color[4];
52b017d22a4f New URI: "/studies/.../merge" to merge a study
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diff changeset
326
52b017d22a4f New URI: "/studies/.../merge" to merge a study
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2447
diff changeset
327 switch (target.GetFormat())
52b017d22a4f New URI: "/studies/.../merge" to merge a study
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2447
diff changeset
328 {
52b017d22a4f New URI: "/studies/.../merge" to merge a study
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
329 case PixelFormat_BGRA32:
52b017d22a4f New URI: "/studies/.../merge" to merge a study
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
330 color[0] = b;
52b017d22a4f New URI: "/studies/.../merge" to merge a study
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
331 color[1] = g;
52b017d22a4f New URI: "/studies/.../merge" to merge a study
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2447
diff changeset
332 color[2] = r;
52b017d22a4f New URI: "/studies/.../merge" to merge a study
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2447
diff changeset
333 color[3] = 255;
52b017d22a4f New URI: "/studies/.../merge" to merge a study
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2447
diff changeset
334 break;
52b017d22a4f New URI: "/studies/.../merge" to merge a study
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2447
diff changeset
335
52b017d22a4f New URI: "/studies/.../merge" to merge a study
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2447
diff changeset
336 default:
52b017d22a4f New URI: "/studies/.../merge" to merge a study
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2447
diff changeset
337 color[0] = r;
52b017d22a4f New URI: "/studies/.../merge" to merge a study
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2447
diff changeset
338 color[1] = g;
52b017d22a4f New URI: "/studies/.../merge" to merge a study
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2447
diff changeset
339 color[2] = b;
52b017d22a4f New URI: "/studies/.../merge" to merge a study
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2447
diff changeset
340 color[3] = 255;
52b017d22a4f New URI: "/studies/.../merge" to merge a study
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2447
diff changeset
341 break;
52b017d22a4f New URI: "/studies/.../merge" to merge a study
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2447
diff changeset
342 }
52b017d22a4f New URI: "/studies/.../merge" to merge a study
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2447
diff changeset
343
1610
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diff changeset
344 DrawInternal(target, utf8, x, y, color);
2dff2bdffdb8 font support within Orthanc
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parents:
diff changeset
345 }
2dff2bdffdb8 font support within Orthanc
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diff changeset
346
2900
668d5ad73c74 Font::Render()
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diff changeset
347
668d5ad73c74 Font::Render()
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diff changeset
348 void Font::ComputeTextExtent(unsigned int& width,
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
349 unsigned int& height,
668d5ad73c74 Font::Render()
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diff changeset
350 const std::string& utf8) const
668d5ad73c74 Font::Render()
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diff changeset
351 {
668d5ad73c74 Font::Render()
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diff changeset
352 width = 0;
2914
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parents: 2913
diff changeset
353 height = 0;
2900
668d5ad73c74 Font::Render()
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diff changeset
354
668d5ad73c74 Font::Render()
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diff changeset
355 #if ORTHANC_ENABLE_LOCALE == 1
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
356 std::string s = Toolbox::ConvertFromUtf8(utf8, Encoding_Latin1);
668d5ad73c74 Font::Render()
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parents: 2853
diff changeset
357 #else
668d5ad73c74 Font::Render()
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parents: 2853
diff changeset
358 // If the locale support is disabled, simply drop non-ASCII
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
359 // characters from the source UTF-8 string
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
360 std::string s = Toolbox::ConvertToAscii(utf8);
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
361 #endif
668d5ad73c74 Font::Render()
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parents: 2853
diff changeset
362
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
363 // Compute the text extent
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
364 unsigned int x = 0;
2901
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2900
diff changeset
365 unsigned int y = 0;
2900
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
366
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
367 for (size_t i = 0; i < s.size(); i++)
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
368 {
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
369 if (s[i] == '\n')
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
370 {
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
371 // Go to the next line
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
372 x = 0;
2901
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2900
diff changeset
373 y += (maxHeight_ + 1);
2900
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
374 }
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
375 else
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
376 {
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
377 Characters::const_iterator c = characters_.find(s[i]);
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
378 if (c != characters_.end())
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
379 {
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
380 x += c->second->advance_;
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
381
2901
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2900
diff changeset
382 unsigned int bottom = y + c->second->top_ + c->second->height_;
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2900
diff changeset
383 if (bottom > height)
2900
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
384 {
2901
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2900
diff changeset
385 height = bottom;
2900
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
386 }
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
387
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
388 if (x > width)
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
389 {
668d5ad73c74 Font::Render()
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parents: 2853
diff changeset
390 width = x;
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
391 }
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
392 }
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
393 }
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
394 }
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
395 }
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
396
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
397
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
398 ImageAccessor* Font::Render(const std::string& utf8,
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
399 PixelFormat format,
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
400 uint8_t r,
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
401 uint8_t g,
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
402 uint8_t b) const
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
403 {
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
404 unsigned int width, height;
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
405 ComputeTextExtent(width, height, utf8);
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
406
3712
2a170a8f1faf replacing std::auto_ptr by std::unique_ptr
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3640
diff changeset
407 std::unique_ptr<ImageAccessor> target(new Image(format, width, height, false));
2900
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
408 ImageProcessing::Set(*target, 0, 0, 0, 255);
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
409 Draw(*target, utf8, 0, 0, r, g, b);
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
410
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
411 return target.release();
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
412 }
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
413
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
414
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
415 ImageAccessor* Font::RenderAlpha(const std::string& utf8) const
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
416 {
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
417 unsigned int width, height;
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
418 ComputeTextExtent(width, height, utf8);
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
419
3712
2a170a8f1faf replacing std::auto_ptr by std::unique_ptr
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3640
diff changeset
420 std::unique_ptr<ImageAccessor> target(new Image(PixelFormat_Grayscale8, width, height, false));
2900
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
421 ImageProcessing::Set(*target, 0);
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
422 Draw(*target, utf8, 0, 0, 255);
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
423
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
424 return target.release();
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
425 }
1610
2dff2bdffdb8 font support within Orthanc
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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