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annotate Core/Images/Font.cpp @ 3361:ea07b29c6d0e emscripten-logging

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Merge fro default
author Benjamin Golinvaux <bgo@osimis.io>
date Tue, 07 May 2019 13:10:48 +0200
parents 4e43e67f8ecf
children 94f4a18a79cc
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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) 2017-2019 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU General Public License as
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9 * published by the Free Software Foundation, either version 3 of the
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10 * License, or (at your option) any later version.
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11 *
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12 * In addition, as a special exception, the copyright holders of this
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13 * program give permission to link the code of its release with the
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14 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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15 * that use the same license as the "OpenSSL" library), and distribute
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16 * the linked executables. You must obey the GNU General Public License
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17 * in all respects for all of the code used other than "OpenSSL". If you
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18 * modify file(s) with this exception, you may extend this exception to
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19 * your version of the file(s), but you are not obligated to do so. If
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20 * you do not wish to do so, delete this exception statement from your
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21 * version. If you delete this exception statement from all source files
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22 * in the program, then also delete it here.
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23 *
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24 * This program is distributed in the hope that it will be useful, but
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25 * WITHOUT ANY WARRANTY; without even the implied warranty of
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26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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27 * General Public License for more details.
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28 *
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29 * You should have received a copy of the GNU General Public License
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30 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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31 **/
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32
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33
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34 #include "../PrecompiledHeaders.h"
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35 #include "Font.h"
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36
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37 #if !defined(ORTHANC_ENABLE_LOCALE)
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38 # error ORTHANC_ENABLE_LOCALE must be defined to use this file
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39 #endif
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40
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41 #if ORTHANC_SANDBOXED == 0
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42 # include "../SystemToolbox.h"
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43 #endif
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44
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45 #include "../OrthancException.h"
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46 #include "../Toolbox.h"
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47 #include "Image.h"
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48 #include "ImageProcessing.h"
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49
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50 #include <stdio.h>
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51 #include <memory>
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52 #include <boost/lexical_cast.hpp>
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53
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54 namespace Orthanc
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55 {
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56 Font::~Font()
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57 {
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58 for (Characters::iterator it = characters_.begin();
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59 it != characters_.end(); ++it)
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60 {
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61 delete it->second;
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62 }
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63 }
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64
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65
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66 void Font::LoadFromMemory(const std::string& font)
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67 {
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68 Json::Value v;
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69 Json::Reader reader;
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70 if (!reader.parse(font, v) ||
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71 v.type() != Json::objectValue ||
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72 !v.isMember("Name") ||
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73 !v.isMember("Size") ||
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74 !v.isMember("Characters") ||
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75 v["Name"].type() != Json::stringValue ||
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76 v["Size"].type() != Json::intValue ||
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77 v["Characters"].type() != Json::objectValue)
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78 {
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79 throw OrthancException(ErrorCode_BadFont);
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80 }
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81
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82 name_ = v["Name"].asString();
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83 size_ = v["Size"].asUInt();
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84 maxHeight_ = 0;
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85
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86 Json::Value::Members characters = v["Characters"].getMemberNames();
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87
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88 for (size_t i = 0; i < characters.size(); i++)
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89 {
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90 const Json::Value& info = v["Characters"][characters[i]];
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91 if (info.type() != Json::objectValue ||
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92 !info.isMember("Advance") ||
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93 !info.isMember("Bitmap") ||
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94 !info.isMember("Height") ||
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95 !info.isMember("Top") ||
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96 !info.isMember("Width") ||
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97 info["Advance"].type() != Json::intValue ||
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98 info["Bitmap"].type() != Json::arrayValue ||
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99 info["Height"].type() != Json::intValue ||
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100 info["Top"].type() != Json::intValue ||
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101 info["Width"].type() != Json::intValue)
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102 {
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103 throw OrthancException(ErrorCode_BadFont);
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104 }
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105
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106 std::auto_ptr<Character> c(new Character);
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107
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108 c->advance_ = info["Advance"].asUInt();
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109 c->height_ = info["Height"].asUInt();
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110 c->top_ = info["Top"].asUInt();
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111 c->width_ = info["Width"].asUInt();
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112 c->bitmap_.resize(info["Bitmap"].size());
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113
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114 if (c->height_ > maxHeight_)
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115 {
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116 maxHeight_ = c->height_;
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117 }
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118
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119 for (Json::Value::ArrayIndex j = 0; j < info["Bitmap"].size(); j++)
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120 {
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121 if (info["Bitmap"][j].type() != Json::intValue)
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122 {
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123 throw OrthancException(ErrorCode_BadFont);
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124 }
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125
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126 int value = info["Bitmap"][j].asInt();
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127 if (value < 0 || value > 255)
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128 {
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129 throw OrthancException(ErrorCode_BadFont);
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130 }
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131
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132 c->bitmap_[j] = static_cast<uint8_t>(value);
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133 }
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134
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135 int index = boost::lexical_cast<int>(characters[i]);
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136 if (index < 0 || index > 255)
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137 {
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138 throw OrthancException(ErrorCode_BadFont);
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139 }
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140
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141 characters_[static_cast<char>(index)] = c.release();
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142 }
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143 }
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144
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145
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146 #if ORTHANC_SANDBOXED == 0
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147 void Font::LoadFromFile(const std::string& path)
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148 {
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149 std::string font;
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150 SystemToolbox::ReadFile(font, path);
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151 LoadFromMemory(font);
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152 }
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153 #endif
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154
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155
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156 #if ORTHANC_HAS_EMBEDDED_RESOURCES == 1
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157 void Font::LoadFromResource(EmbeddedResources::FileResourceId resource)
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158 {
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159 std::string content;
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160 EmbeddedResources::GetFileResource(content, resource);
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161 LoadFromMemory(content);
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162 }
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163 #endif
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164
058851941abe Font::LoadFromResource()
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165
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166 static unsigned int MyMin(unsigned int a,
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167 unsigned int b)
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168 {
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169 return a < b ? a : b;
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170 }
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171
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172
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173 void Font::DrawCharacter(ImageAccessor& target,
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174 const Character& character,
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175 int x,
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176 int y,
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177 const uint8_t color[4]) const
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178 {
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179 // Compute the bounds of the character
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180 if (x >= static_cast<int>(target.GetWidth()) ||
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181 y >= static_cast<int>(target.GetHeight()))
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182 {
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183 // The character is out of the image
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184 return;
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185 }
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186
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187 unsigned int left = x < 0 ? -x : 0;
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188 unsigned int top = y < 0 ? -y : 0;
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189 unsigned int width = MyMin(character.width_, target.GetWidth() - x);
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190 unsigned int height = MyMin(character.height_, target.GetHeight() - y);
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191
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192 unsigned int bpp = target.GetBytesPerPixel();
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193
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194 // Blit the font bitmap OVER the target image
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195 // https://en.wikipedia.org/wiki/Alpha_compositing
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196
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197 for (unsigned int cy = top; cy < height; cy++)
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198 {
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199 uint8_t* p = reinterpret_cast<uint8_t*>(target.GetRow(y + cy)) + (x + left) * bpp;
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200 unsigned int pos = cy * character.width_ + left;
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201
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202 switch (target.GetFormat())
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203 {
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204 case PixelFormat_Grayscale8:
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205 {
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206 assert(bpp == 1);
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207 for (unsigned int cx = left; cx < width; cx++, pos++, p++)
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208 {
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209 uint16_t alpha = character.bitmap_[pos];
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210 uint16_t value = alpha * static_cast<uint16_t>(color[0]) + (255 - alpha) * static_cast<uint16_t>(*p);
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211 *p = static_cast<uint8_t>(value >> 8);
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212 }
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213
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214 break;
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215 }
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216
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217 case PixelFormat_RGB24:
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218 {
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219 assert(bpp == 3);
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220 for (unsigned int cx = left; cx < width; cx++, pos++, p += 3)
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221 {
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222 uint16_t alpha = character.bitmap_[pos];
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diff changeset
223 for (uint8_t i = 0; i < 3; i++)
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224 {
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225 uint16_t value = alpha * static_cast<uint16_t>(color[i]) + (255 - alpha) * static_cast<uint16_t>(p[i]);
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226 p[i] = static_cast<uint8_t>(value >> 8);
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diff changeset
227 }
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228 }
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229
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diff changeset
230 break;
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parents:
diff changeset
231 }
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diff changeset
232
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diff changeset
233 case PixelFormat_RGBA32:
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diff changeset
234 case PixelFormat_BGRA32:
1610
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diff changeset
235 {
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diff changeset
236 assert(bpp == 4);
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237
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diff changeset
238 for (unsigned int cx = left; cx < width; cx++, pos++, p += 4)
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diff changeset
239 {
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diff changeset
240 float alpha = static_cast<float>(character.bitmap_[pos]) / 255.0f;
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241 float beta = (1.0f - alpha) * static_cast<float>(p[3]) / 255.0f;
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diff changeset
242 float denom = 1.0f / (alpha + beta);
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diff changeset
243
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diff changeset
244 for (uint8_t i = 0; i < 3; i++)
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diff changeset
245 {
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diff changeset
246 p[i] = static_cast<uint8_t>((alpha * static_cast<float>(color[i]) +
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diff changeset
247 beta * static_cast<float>(p[i])) * denom);
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248 }
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diff changeset
249
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diff changeset
250 p[3] = static_cast<uint8_t>(255.0f * (alpha + beta));
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diff changeset
251 }
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parents:
diff changeset
252
2dff2bdffdb8 font support within Orthanc
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diff changeset
253 break;
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parents:
diff changeset
254 }
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parents:
diff changeset
255
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parents:
diff changeset
256 default:
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diff changeset
257 throw OrthancException(ErrorCode_NotImplemented);
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parents:
diff changeset
258 }
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parents:
diff changeset
259 }
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parents:
diff changeset
260
2dff2bdffdb8 font support within Orthanc
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parents:
diff changeset
261 }
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parents:
diff changeset
262
2dff2bdffdb8 font support within Orthanc
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parents:
diff changeset
263
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parents:
diff changeset
264 void Font::DrawInternal(ImageAccessor& target,
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parents:
diff changeset
265 const std::string& utf8,
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diff changeset
266 int x,
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diff changeset
267 int y,
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diff changeset
268 const uint8_t color[4]) const
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diff changeset
269 {
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diff changeset
270 if (target.GetFormat() != PixelFormat_Grayscale8 &&
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diff changeset
271 target.GetFormat() != PixelFormat_RGB24 &&
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diff changeset
272 target.GetFormat() != PixelFormat_RGBA32 &&
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diff changeset
273 target.GetFormat() != PixelFormat_BGRA32)
1610
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diff changeset
274 {
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275 throw OrthancException(ErrorCode_NotImplemented);
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diff changeset
276 }
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277
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diff changeset
278 int a = x;
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diff changeset
279
2379
4900688827a8 reorganization in CMake
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diff changeset
280 #if ORTHANC_ENABLE_LOCALE == 1
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281 std::string s = Toolbox::ConvertFromUtf8(utf8, Encoding_Latin1);
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diff changeset
282 #else
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diff changeset
283 // If the locale support is disabled, simply drop non-ASCII
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284 // characters from the source UTF-8 string
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285 std::string s = Toolbox::ConvertToAscii(utf8);
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286 #endif
1610
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287
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288 for (size_t i = 0; i < s.size(); i++)
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diff changeset
289 {
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290 if (s[i] == '\n')
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diff changeset
291 {
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292 // Go to the next line
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293 a = x;
2dff2bdffdb8 font support within Orthanc
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294 y += maxHeight_ + 1;
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diff changeset
295 }
2dff2bdffdb8 font support within Orthanc
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diff changeset
296 else
2dff2bdffdb8 font support within Orthanc
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diff changeset
297 {
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298 Characters::const_iterator c = characters_.find(s[i]);
2dff2bdffdb8 font support within Orthanc
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diff changeset
299 if (c != characters_.end())
2dff2bdffdb8 font support within Orthanc
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diff changeset
300 {
2dff2bdffdb8 font support within Orthanc
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diff changeset
301 DrawCharacter(target, *c->second, a, y + static_cast<int>(c->second->top_), color);
2dff2bdffdb8 font support within Orthanc
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diff changeset
302 a += c->second->advance_;
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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:
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305 }
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parents:
diff changeset
306 }
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parents:
diff changeset
307
2dff2bdffdb8 font support within Orthanc
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parents:
diff changeset
308
1611
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diff changeset
309 void Font::Draw(ImageAccessor& target,
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diff changeset
310 const std::string& utf8,
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diff changeset
311 int x,
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diff changeset
312 int y,
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313 uint8_t grayscale) const
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314 {
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315 uint8_t color[4] = { grayscale, grayscale, grayscale, 255 };
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316 DrawInternal(target, utf8, x, y, color);
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parents:
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317 }
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parents:
diff changeset
318
2dff2bdffdb8 font support within Orthanc
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parents:
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319
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diff changeset
320 void Font::Draw(ImageAccessor& target,
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diff changeset
321 const std::string& utf8,
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diff changeset
322 int x,
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diff changeset
323 int y,
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diff changeset
324 uint8_t r,
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diff changeset
325 uint8_t g,
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diff changeset
326 uint8_t b) const
1610
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diff changeset
327 {
2853
52b017d22a4f New URI: "/studies/.../merge" to merge a study
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diff changeset
328 uint8_t color[4];
52b017d22a4f New URI: "/studies/.../merge" to merge a study
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diff changeset
329
52b017d22a4f New URI: "/studies/.../merge" to merge a study
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2447
diff changeset
330 switch (target.GetFormat())
52b017d22a4f New URI: "/studies/.../merge" to merge a study
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2447
diff changeset
331 {
52b017d22a4f New URI: "/studies/.../merge" to merge a study
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
332 case PixelFormat_BGRA32:
52b017d22a4f New URI: "/studies/.../merge" to merge a study
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2447
diff changeset
333 color[0] = b;
52b017d22a4f New URI: "/studies/.../merge" to merge a study
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2447
diff changeset
334 color[1] = g;
52b017d22a4f New URI: "/studies/.../merge" to merge a study
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2447
diff changeset
335 color[2] = r;
52b017d22a4f New URI: "/studies/.../merge" to merge a study
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2447
diff changeset
336 color[3] = 255;
52b017d22a4f New URI: "/studies/.../merge" to merge a study
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2447
diff changeset
337 break;
52b017d22a4f New URI: "/studies/.../merge" to merge a study
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2447
diff changeset
338
52b017d22a4f New URI: "/studies/.../merge" to merge a study
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2447
diff changeset
339 default:
52b017d22a4f New URI: "/studies/.../merge" to merge a study
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2447
diff changeset
340 color[0] = r;
52b017d22a4f New URI: "/studies/.../merge" to merge a study
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2447
diff changeset
341 color[1] = g;
52b017d22a4f New URI: "/studies/.../merge" to merge a study
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2447
diff changeset
342 color[2] = b;
52b017d22a4f New URI: "/studies/.../merge" to merge a study
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2447
diff changeset
343 color[3] = 255;
52b017d22a4f New URI: "/studies/.../merge" to merge a study
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2447
diff changeset
344 break;
52b017d22a4f New URI: "/studies/.../merge" to merge a study
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2447
diff changeset
345 }
52b017d22a4f New URI: "/studies/.../merge" to merge a study
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2447
diff changeset
346
1610
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diff changeset
347 DrawInternal(target, utf8, x, y, color);
2dff2bdffdb8 font support within Orthanc
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
348 }
2dff2bdffdb8 font support within Orthanc
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parents:
diff changeset
349
2900
668d5ad73c74 Font::Render()
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diff changeset
350
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
351 void Font::ComputeTextExtent(unsigned int& width,
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
352 unsigned int& height,
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
353 const std::string& utf8) const
668d5ad73c74 Font::Render()
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diff changeset
354 {
668d5ad73c74 Font::Render()
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parents: 2853
diff changeset
355 width = 0;
2914
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parents: 2913
diff changeset
356 height = 0;
2900
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
357
668d5ad73c74 Font::Render()
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diff changeset
358 #if ORTHANC_ENABLE_LOCALE == 1
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
359 std::string s = Toolbox::ConvertFromUtf8(utf8, Encoding_Latin1);
668d5ad73c74 Font::Render()
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diff changeset
360 #else
668d5ad73c74 Font::Render()
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parents: 2853
diff changeset
361 // If the locale support is disabled, simply drop non-ASCII
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
362 // characters from the source UTF-8 string
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
363 std::string s = Toolbox::ConvertToAscii(utf8);
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
364 #endif
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
365
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
366 // Compute the text extent
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
367 unsigned int x = 0;
2901
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2900
diff changeset
368 unsigned int y = 0;
2900
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
369
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
370 for (size_t i = 0; i < s.size(); i++)
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
371 {
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
372 if (s[i] == '\n')
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
373 {
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
374 // Go to the next line
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
375 x = 0;
2901
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2900
diff changeset
376 y += (maxHeight_ + 1);
2900
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
377 }
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
378 else
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 Characters::const_iterator c = characters_.find(s[i]);
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
381 if (c != characters_.end())
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
382 {
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
383 x += c->second->advance_;
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 unsigned int bottom = y + c->second->top_ + c->second->height_;
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2900
diff changeset
386 if (bottom > height)
2900
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
387 {
2901
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2900
diff changeset
388 height = bottom;
2900
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
389 }
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
390
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
391 if (x > width)
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 width = x;
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 }
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
399
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
400
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
401 ImageAccessor* Font::Render(const std::string& utf8,
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
402 PixelFormat format,
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
403 uint8_t r,
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
404 uint8_t g,
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
405 uint8_t b) const
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
406 {
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
407 unsigned int width, height;
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
408 ComputeTextExtent(width, height, utf8);
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
409
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
410 std::auto_ptr<ImageAccessor> target(new Image(format, width, height, false));
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
411 ImageProcessing::Set(*target, 0, 0, 0, 255);
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
412 Draw(*target, utf8, 0, 0, r, g, b);
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 return target.release();
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
415 }
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
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
418 ImageAccessor* Font::RenderAlpha(const std::string& utf8) const
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
419 {
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
420 unsigned int width, height;
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
421 ComputeTextExtent(width, height, utf8);
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
422
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
423 std::auto_ptr<ImageAccessor> target(new Image(PixelFormat_Grayscale8, width, height, false));
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
424 ImageProcessing::Set(*target, 0);
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
425 Draw(*target, utf8, 0, 0, 255);
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
426
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
diff changeset
427 return target.release();
668d5ad73c74 Font::Render()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 2853
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428 }
1610
2dff2bdffdb8 font support within Orthanc
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
429 }