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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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 <span id="projectnumber">5.0.0-alpha-619-ge9db</span>
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<div class="title">pdfrenderer.cpp</div> </div>
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<div class="contents">
<a href="a00068.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// File: pdfrenderer.cpp</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// Description: PDF rendering interface to inject into TessBaseAPI</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">//</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// (C) Copyright 2011, Google Inc.</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">// Licensed under the Apache License, Version 2.0 (the "License");</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">// you may not use this file except in compliance with the License.</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// You may obtain a copy of the License at</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// http://www.apache.org/licenses/LICENSE-2.0</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">// Unless required by applicable law or agreed to in writing, software</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// distributed under the License is distributed on an "AS IS" BASIS,</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">// See the License for the specific language governing permissions and</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">// limitations under the License.</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment">//</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"></span> </div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment">// Include automatically generated configuration file if running autoconf.</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#ifdef HAVE_CONFIG_H</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#include "config_auto.h"</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  </div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include <locale></span> <span class="comment">// for std::locale::classic</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include <memory></span> <span class="comment">// std::unique_ptr</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <sstream></span> <span class="comment">// for std::stringstream</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include "allheaders.h"</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include <<a class="code" href="a00005.html">tesseract/baseapi.h</a>></span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include <cmath></span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include <<a class="code" href="a00035.html">tesseract/renderer.h</a>></span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include <cstring></span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include "<a class="code" href="a00584.html">tprintf.h</a>"</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  </div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment"></span> </div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment">Design notes from Ken Sharp, with light editing.</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment"></span> </div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment">We think one solution is a font with a single glyph (.notdef) and a</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment">CIDToGIDMap which maps all the CIDs to 0. That map would then be</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment">stored as a stream in the PDF file, and when flat compressed should</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment">be pretty small. The font, of course, will be approximately the same</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment">size as the one you currently use.</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"></span> </div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment">I'm working on such a font now, the CIDToGIDMap is trivial, you just</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment">create a stream object which contains 128k bytes (2 bytes per possible</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment">CID and your CIDs range from 0 to 65535) and where you currently have</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment">"/CIDToGIDMap /Identity" you would have "/CIDToGIDMap <object> 0 R".</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment"></span> </div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment">Note that if, in future, you were to use a different (ie not 2 byte)</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment">CMap for character codes you could trivially extend the CIDToGIDMap.</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="comment"></span> </div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="comment">The following is an explanation of how some of the font stuff works,</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="comment">this may be too simple for you in which case please accept my</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment">apologies, its hard to know how much knowledge someone has. You can</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment">skip all this anyway, its just for information.</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment"></span> </div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment">The font embedded in a PDF file is usually intended just to be</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="comment">rendered, but extensions allow for at least some ability to locate (or</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="comment">copy) text from a document. This isn't something which was an original</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="comment">goal of the PDF format, but its been retro-fitted, presumably due to</span></div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="comment">popular demand.</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="comment"></span> </div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="comment">To do this reliably the PDF file must contain a ToUnicode CMap, a</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="comment">device for mapping character codes to Unicode code points. If one of</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment">these is present, then this will be used to convert the character</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="comment">codes into Unicode values. If its not present then the reader will</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="comment">fall back through a series of heuristics to try and guess the</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="comment">result. This is, as you would expect, prone to failure.</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="comment"></span> </div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="comment">This doesn't concern you of course, since you always write a ToUnicode</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="comment">CMap, so because you are writing the text in text rendering mode 3 it</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="comment">would seem that you don't really need to worry about this, but in the</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="comment">PDF spec you cannot have an isolated ToUnicode CMap, it has to be</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="comment">attached to a font, so in order to get even copy/paste to work you</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="comment">need to define a font.</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="comment"></span> </div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="comment">This is what leads to problems, tools like pdfwrite assume that they</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="comment">are going to be able to (or even have to) modify the font entries, so</span></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="comment">they require that the font being embedded be valid, and to be honest</span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="comment">the font Tesseract embeds isn't valid (for this purpose).</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="comment"></span> </div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="comment"></span> </div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="comment">To see why lets look at how text is specified in a PDF file:</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="comment"></span> </div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="comment">(Test) Tj</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="comment"></span> </div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="comment">Now that looks like text but actually it isn't. Each of those bytes is</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="comment">a 'character code'. When it comes to rendering the text a complex</span></div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="comment">sequence of events takes place, which converts the character code into</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="comment">'something' which the font understands. Its entirely possible via</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="comment">character mappings to have that text render as 'Sftu'</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="comment"></span> </div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="comment">For simple fonts (PostScript type 1), we use the character code as the</span></div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="comment">index into an Encoding array (256 elements), each element of which is</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="comment">a glyph name, so this gives us a glyph name. We then consult the</span></div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="comment">CharStrings dictionary in the font, that's a complex object which</span></div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="comment">contains pairs of keys and values, you can use the key to retrieve a</span></div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="comment">given value. So we have a glyph name, we then use that as the key to</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="comment">the dictionary and retrieve the associated value. For a type 1 font,</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="comment">the value is a glyph program that describes how to draw the glyph.</span></div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="comment"></span> </div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="comment">For CIDFonts, its a little more complicated. Because CIDFonts can be</span></div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="comment">large, using a glyph name as the key is unreasonable (it would also</span></div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="comment">lead to unfeasibly large Encoding arrays), so instead we use a 'CID'</span></div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="comment">as the key. CIDs are just numbers.</span></div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="comment"></span> </div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="comment">But.... We don't use the character code as the CID. What we do is use</span></div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="comment">a CMap to convert the character code into a CID. We then use the CID</span></div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="comment">to key the CharStrings dictionary and proceed as before. So the 'CMap'</span></div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="comment">is the equivalent of the Encoding array, but its a more compact and</span></div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="comment">flexible representation.</span></div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="comment"></span> </div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="comment">Note that you have to use the CMap just to find out how many bytes</span></div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <span class="comment">constitute a character code, and it can be variable. For example you</span></div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="comment">can say if the first byte is 0x00->0x7f then its just one byte, if its</span></div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="comment">0x80->0xf0 then its 2 bytes and if its 0xf0->0xff then its 3 bytes. I</span></div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> <span class="comment">have seen CMaps defining character codes up to 5 bytes wide.</span></div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="comment"></span> </div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="comment">Now that's fine for 'PostScript' CIDFonts, but its not sufficient for</span></div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="comment">TrueType CIDFonts. The thing is that TrueType fonts are accessed using</span></div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="comment">a Glyph ID (GID) (and the LOCA table) which may well not be anything</span></div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="comment">like the CID. So for this case PDF includes a CIDToGIDMap. That maps</span></div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="comment">the CIDs to GIDs, and we can then use the GID to get the glyph</span></div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="comment">description from the GLYF table of the font.</span></div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="comment"></span> </div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="comment">So for a TrueType CIDFont, character-code->CID->GID->glyf-program.</span></div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="comment"></span> </div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="comment">Looking at the PDF file I was supplied with we see that it contains</span></div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> <span class="comment">text like :</span></div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="comment"></span> </div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="comment"><0x0075> Tj</span></div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="comment"></span> </div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="comment">So we start by taking the character code (117) and look it up in the</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="comment">CMap. Well you don't supply a CMap, you just use the Identity-H one</span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="comment">which is predefined. So character code 117 maps to CID 117. Then we</span></div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> <span class="comment">use the CIDToGIDMap, again you don't supply one, you just use the</span></div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> <span class="comment">predefined 'Identity' map. So CID 117 maps to GID 117. But the font we</span></div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="comment">were supplied with only contains 116 glyphs.</span></div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span> <span class="comment"></span> </div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="comment">Now for Latin that's not a huge problem, you can just supply a bigger</span></div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="comment">font. But for more complex languages that *is* going to be more of a</span></div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="comment">problem. Either you need to supply a font which contains glyphs for</span></div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> <span class="comment">all the possible CID->GID mappings, or we need to think laterally.</span></div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> <span class="comment"></span> </div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span> <span class="comment">Our solution using a TrueType CIDFont is to intervene at the</span></div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> <span class="comment">CIDToGIDMap stage and convert all the CIDs to GID 0. Then we have a</span></div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> <span class="comment">font with just one glyph, the .notdef glyph at GID 0. This is what I'm</span></div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> <span class="comment">looking into now.</span></div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> <span class="comment"></span> </div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span> <span class="comment">It would also be possible to have a 'PostScript' (ie type 1 outlines)</span></div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span> <span class="comment">CIDFont which contained 1 glyph, and a CMap which mapped all character</span></div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span> <span class="comment">codes to CID 0. The effect would be the same.</span></div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> <span class="comment"></span> </div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> <span class="comment">Its possible (I haven't checked) that the PostScript CIDFont and</span></div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span> <span class="comment">associated CMap would be smaller than the TrueType font and associated</span></div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> <span class="comment">CIDToGIDMap.</span></div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> <span class="comment"></span> </div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> <span class="comment">--- in a followup ---</span></div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span> <span class="comment"></span> </div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span> <span class="comment">OK there is a small problem there, if I use GID 0 then Acrobat gets</span></div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> <span class="comment">upset about it and complains it cannot extract the font. If I set the</span></div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span> <span class="comment">CIDToGIDMap so that all the entries are 1 instead, it's happy. Totally</span></div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> <span class="comment">mad......</span></div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="comment"></span> </div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> <span class="comment">*/</span></div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  </div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> <span class="keyword">namespace </span><a class="code" href="a01818.html">tesseract</a> {</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  </div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> <span class="comment">// If the font is 10 pts, nominal character width is 5 pts</span></div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span> <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> kCharWidth = 2;</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  </div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span> <span class="comment">// Used for memory allocation. A codepoint must take no more than this</span></div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span> <span class="comment">// many bytes, when written in the PDF way. e.g. "<0063>" for the</span></div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> <span class="comment">// letter 'c'</span></div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span> <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> kMaxBytesPerCodepoint = 20;</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  </div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span> <span class="comment">/**********************************************************************</span></div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span> <span class="comment"> * PDF Renderer interface implementation</span></div>
<div class="line"><a name="l00178"></a><span class="lineno"><a class="line" href="a02510.html#aa2ac4ee62876b2c3efc2203415816ccc"> 178</a></span> <span class="comment"> **********************************************************************/</span></div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span> <a class="code" href="a02510.html#aa2ac4ee62876b2c3efc2203415816ccc">TessPDFRenderer::TessPDFRenderer</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *outputbase, <span class="keyword">const</span> <span class="keywordtype">char</span> *datadir,</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="keywordtype">bool</span> textonly)</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  : <a class="code" href="a02490.html">TessResultRenderer</a>(outputbase, <span class="stringliteral">"pdf"</span>),</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  datadir_(datadir) {</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  obj_ = 0;</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  textonly_ = textonly;</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  offsets_.<a class="code" href="a02434.html#a0dc89fe2a365b04a61017f9d78c1a303">push_back</a>(0);</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span> }</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  </div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span> <span class="keywordtype">void</span> TessPDFRenderer::AppendPDFObjectDIY(<span class="keywordtype">size_t</span> objectsize) {</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  offsets_.<a class="code" href="a02434.html#a0dc89fe2a365b04a61017f9d78c1a303">push_back</a>(objectsize + offsets_.<a class="code" href="a02434.html#a48b82547ebbaa5fedecfdebe7e2f155a">back</a>());</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  obj_++;</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span> }</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  </div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span> <span class="keywordtype">void</span> TessPDFRenderer::AppendPDFObject(<span class="keyword">const</span> <span class="keywordtype">char</span> *data) {</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  AppendPDFObjectDIY(strlen(data));</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <a class="code" href="a02490.html#a9d903a379bfc1467618b8ee616ba64b6">AppendString</a>(data);</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span> }</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  </div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span> <span class="comment">// Helper function to prevent us from accidentally writing</span></div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span> <span class="comment">// scientific notation to an HOCR or PDF file. Besides, three</span></div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span> <span class="comment">// decimal points are all you really need.</span></div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> <span class="keyword">static</span> <span class="keywordtype">double</span> prec(<span class="keywordtype">double</span> x) {</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="keywordtype">double</span> kPrecision = 1000.0;</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="keywordtype">double</span> a = round(x * kPrecision) / kPrecision;</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="keywordflow">if</span> (a == -0)</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <span class="keywordflow">return</span> a;</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span> }</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  </div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span> <span class="keyword">static</span> <span class="keywordtype">long</span> dist2(<span class="keywordtype">int</span> x1, <span class="keywordtype">int</span> y1, <span class="keywordtype">int</span> x2, <span class="keywordtype">int</span> y2) {</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <span class="keywordflow">return</span> (x2 - x1) * (x2 - x1) + (y2 - y1) * (y2 - y1);</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span> }</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  </div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span> <span class="comment">// Viewers like evince can get really confused during copy-paste when</span></div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span> <span class="comment">// the baseline wanders around. So I've decided to project every word</span></div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span> <span class="comment">// onto the (straight) line baseline. All numbers are in the native</span></div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span> <span class="comment">// PDF coordinate system, which has the origin in the bottom left and</span></div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span> <span class="comment">// the unit is points, which is 1/72 inch. Tesseract reports baselines</span></div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span> <span class="comment">// left-to-right no matter what the reading order is. We need the</span></div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span> <span class="comment">// word baseline in reading order, so we do that conversion here. Returns</span></div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span> <span class="comment">// the word's baseline origin and length.</span></div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span> <span class="keyword">static</span> <span class="keywordtype">void</span> GetWordBaseline(<span class="keywordtype">int</span> writing_direction, <span class="keywordtype">int</span> ppi, <span class="keywordtype">int</span> height,</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  <span class="keywordtype">int</span> word_x1, <span class="keywordtype">int</span> word_y1, <span class="keywordtype">int</span> word_x2, <span class="keywordtype">int</span> word_y2,</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="keywordtype">int</span> line_x1, <span class="keywordtype">int</span> line_y1, <span class="keywordtype">int</span> line_x2, <span class="keywordtype">int</span> line_y2,</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <span class="keywordtype">double</span> *x0, <span class="keywordtype">double</span> *y0, <span class="keywordtype">double</span> *length) {</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <span class="keywordflow">if</span> (writing_direction == <a class="code" href="a01818.html#acac5bfbc6e9f8ca26f42ea3bad95d84ea876dcb2db2ae5333ff02decbe5628b24">WRITING_DIRECTION_RIGHT_TO_LEFT</a>) {</div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <a class="code" href="a00014.html#ae8b7e3bea137bea50dc1ceb158ddf0ac">Swap</a>(&word_x1, &word_x2);</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <a class="code" href="a00014.html#ae8b7e3bea137bea50dc1ceb158ddf0ac">Swap</a>(&word_y1, &word_y2);</div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  }</div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <span class="keywordtype">double</span> word_length;</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <span class="keywordtype">double</span> x, y;</div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  {</div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="keywordtype">int</span> px = word_x1;</div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="keywordtype">int</span> py = word_y1;</div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  <span class="keywordtype">double</span> l2 = dist2(line_x1, line_y1, line_x2, line_y2);</div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="keywordflow">if</span> (l2 == 0) {</div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  x = line_x1;</div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  y = line_y1;</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="keywordtype">double</span> t = ((px - line_x2) * (line_x2 - line_x1) +</div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  (py - line_y2) * (line_y2 - line_y1)) / l2;</div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  x = line_x2 + t * (line_x2 - line_x1);</div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  y = line_y2 + t * (line_y2 - line_y1);</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  }</div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  word_length = sqrt(static_cast<double>(dist2(word_x1, word_y1,</div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  word_x2, word_y2)));</div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  word_length = word_length * 72.0 / ppi;</div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  x = x * 72 / ppi;</div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  y = height - (y * 72.0 / ppi);</div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  }</div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  *x0 = x;</div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  *y0 = y;</div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  *length = word_length;</div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span> }</div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  </div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span> <span class="comment">// Compute coefficients for an affine matrix describing the rotation</span></div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span> <span class="comment">// of the text. If the text is right-to-left such as Arabic or Hebrew,</span></div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span> <span class="comment">// we reflect over the Y-axis. This matrix will set the coordinate</span></div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span> <span class="comment">// system for placing text in the PDF file.</span></div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span> <span class="comment">//</span></div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span> <span class="comment">// RTL</span></div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span> <span class="comment">// [ x' ] = [ a b ][ x ] = [-1 0 ] [ cos sin ][ x ]</span></div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span> <span class="comment">// [ y' ] [ c d ][ y ] [ 0 1 ] [-sin cos ][ y ]</span></div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span> <span class="keyword">static</span> <span class="keywordtype">void</span> AffineMatrix(<span class="keywordtype">int</span> writing_direction,</div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  <span class="keywordtype">int</span> line_x1, <span class="keywordtype">int</span> line_y1, <span class="keywordtype">int</span> line_x2, <span class="keywordtype">int</span> line_y2,</div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  <span class="keywordtype">double</span> *a, <span class="keywordtype">double</span> *b, <span class="keywordtype">double</span> *c, <span class="keywordtype">double</span> *d) {</div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <span class="keywordtype">double</span> theta = atan2(static_cast<double>(line_y1 - line_y2),</div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  static_cast<double>(line_x2 - line_x1));</div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  *a = cos(theta);</div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  *b = sin(theta);</div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  *c = -sin(theta);</div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  *d = cos(theta);</div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  <span class="keywordflow">switch</span>(writing_direction) {</div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  <span class="keywordflow">case</span> <a class="code" href="a01818.html#acac5bfbc6e9f8ca26f42ea3bad95d84ea876dcb2db2ae5333ff02decbe5628b24">WRITING_DIRECTION_RIGHT_TO_LEFT</a>:</div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  *a = -*a;</div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  *b = -*b;</div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  <span class="keywordflow">case</span> <a class="code" href="a01818.html#acac5bfbc6e9f8ca26f42ea3bad95d84ea2101d1745ea753883e7cd89188fe511d">WRITING_DIRECTION_TOP_TO_BOTTOM</a>:</div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  <span class="comment">// TODO(jbreiden) Consider using the vertical PDF writing mode.</span></div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  }</div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span> }</div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  </div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span> <span class="comment">// There are some really awkward PDF viewers in the wild, such as</span></div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span> <span class="comment">// 'Preview' which ships with the Mac. They do a better job with text</span></div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span> <span class="comment">// selection and highlighting when given perfectly flat baseline</span></div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span> <span class="comment">// instead of very slightly tilted. We clip small tilts to appease</span></div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span> <span class="comment">// these viewers. I chose this threshold large enough to absorb noise,</span></div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span> <span class="comment">// but small enough that lines probably won't cross each other if the</span></div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span> <span class="comment">// whole page is tilted at almost exactly the clipping threshold.</span></div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span> <span class="keyword">static</span> <span class="keywordtype">void</span> ClipBaseline(<span class="keywordtype">int</span> ppi, <span class="keywordtype">int</span> x1, <span class="keywordtype">int</span> y1, <span class="keywordtype">int</span> x2, <span class="keywordtype">int</span> y2,</div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  <span class="keywordtype">int</span> *line_x1, <span class="keywordtype">int</span> *line_y1,</div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  <span class="keywordtype">int</span> *line_x2, <span class="keywordtype">int</span> *line_y2) {</div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  *line_x1 = x1;</div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  *line_y1 = y1;</div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  *line_x2 = x2;</div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  *line_y2 = y2;</div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  <span class="keywordtype">int</span> rise = abs(y2 - y1) * 72;</div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  <span class="keywordtype">int</span> run = abs(x2 - x1) * 72;</div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  <span class="keywordflow">if</span> (rise < 2 * ppi && 2 * ppi < run)</div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  *line_y1 = *line_y2 = (y1 + y2) / 2;</div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span> }</div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  </div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span> <span class="keyword">static</span> <span class="keywordtype">bool</span> CodepointToUtf16be(<span class="keywordtype">int</span> code, <span class="keywordtype">char</span> utf16[kMaxBytesPerCodepoint]) {</div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  <span class="keywordflow">if</span> ((code > 0xD7FF && code < 0xE000) || code > 0x10FFFF) {</div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  <a class="code" href="a00581.html#a0c2bcd4462ec67ab0971b34a0f610f55">tprintf</a>(<span class="stringliteral">"Dropping invalid codepoint %d\n"</span>, code);</div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  }</div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  <span class="keywordflow">if</span> (code < 0x10000) {</div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  snprintf(utf16, kMaxBytesPerCodepoint, <span class="stringliteral">"%04X"</span>, code);</div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  <span class="keywordtype">int</span> a = code - 0x010000;</div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  <span class="keywordtype">int</span> high_surrogate = (0x03FF & (a >> 10)) + 0xD800;</div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  <span class="keywordtype">int</span> low_surrogate = (0x03FF & a) + 0xDC00;</div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  snprintf(utf16, kMaxBytesPerCodepoint,</div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  <span class="stringliteral">"%04X%04X"</span>, high_surrogate, low_surrogate);</div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  }</div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span> }</div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  </div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span> <span class="keywordtype">char</span>* TessPDFRenderer::GetPDFTextObjects(<a class="code" href="a00008.html#a47436d31525552f08492b8dcdfc12755">TessBaseAPI</a>* api,</div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  <span class="keywordtype">double</span> width, <span class="keywordtype">double</span> height) {</div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  <span class="keywordtype">double</span> ppi = api->GetSourceYResolution();</div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  </div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  <span class="comment">// These initial conditions are all arbitrary and will be overwritten</span></div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  <span class="keywordtype">double</span> old_x = 0.0, old_y = 0.0;</div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  <span class="keywordtype">int</span> old_fontsize = 0;</div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  <a class="code" href="a01818.html#acac5bfbc6e9f8ca26f42ea3bad95d84e">tesseract::WritingDirection</a> old_writing_direction =</div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  <a class="code" href="a01818.html#acac5bfbc6e9f8ca26f42ea3bad95d84ea525638f610d97a0064cef8e3d25da586">WRITING_DIRECTION_LEFT_TO_RIGHT</a>;</div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  <span class="keywordtype">bool</span> new_block = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  <span class="keywordtype">int</span> fontsize = 0;</div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  <span class="keywordtype">double</span> a = 1;</div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  <span class="keywordtype">double</span> b = 0;</div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  <span class="keywordtype">double</span> c = 0;</div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  <span class="keywordtype">double</span> d = 1;</div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  </div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  std::stringstream pdf_str;</div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  <span class="comment">// Use "C" locale (needed for double values prec()).</span></div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  pdf_str.imbue(std::locale::classic());</div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  <span class="comment">// Use 8 digits for double values.</span></div>
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  pdf_str.precision(8);</div>
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  </div>
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  <span class="comment">// TODO(jbreiden) This marries the text and image together.</span></div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  <span class="comment">// Slightly cleaner from an abstraction standpoint if this were to</span></div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  <span class="comment">// live inside a separate text object.</span></div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  pdf_str << <span class="stringliteral">"q "</span> << prec(width) << <span class="stringliteral">" 0 0 "</span> << prec(height) << <span class="stringliteral">" 0 0 cm"</span>;</div>
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  <span class="keywordflow">if</span> (!textonly_) {</div>
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  pdf_str << <span class="stringliteral">" /Im1 Do"</span>;</div>
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  }</div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  pdf_str << <span class="stringliteral">" Q\n"</span>;</div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  </div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  <span class="keywordtype">int</span> line_x1 = 0;</div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  <span class="keywordtype">int</span> line_y1 = 0;</div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  <span class="keywordtype">int</span> line_x2 = 0;</div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  <span class="keywordtype">int</span> line_y2 = 0;</div>
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  </div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  ResultIterator *res_it = api->GetIterator();</div>
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  <span class="keywordflow">while</span> (!res_it->Empty(<a class="code" href="a01818.html#aa26c22b65cc9765a0e747120f4287fd7a2dcea8d4208c16055353029d26f9bf49">RIL_BLOCK</a>)) {</div>
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  <span class="keywordflow">if</span> (res_it->IsAtBeginningOf(<a class="code" href="a01818.html#aa26c22b65cc9765a0e747120f4287fd7a2dcea8d4208c16055353029d26f9bf49">RIL_BLOCK</a>)) {</div>
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  pdf_str << <span class="stringliteral">"BT\n3 Tr"</span>; <span class="comment">// Begin text object, use invisible ink</span></div>
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  old_fontsize = 0; <span class="comment">// Every block will declare its fontsize</span></div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  new_block = <span class="keyword">true</span>; <span class="comment">// Every block will declare its affine matrix</span></div>
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  }</div>
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  </div>
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  <span class="keywordflow">if</span> (res_it->IsAtBeginningOf(<a class="code" href="a01818.html#aa26c22b65cc9765a0e747120f4287fd7a5e87a35f16de644593c353159ede11d1">RIL_TEXTLINE</a>)) {</div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  <span class="keywordtype">int</span> x1, y1, x2, y2;</div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  res_it->Baseline(<a class="code" href="a01818.html#aa26c22b65cc9765a0e747120f4287fd7a5e87a35f16de644593c353159ede11d1">RIL_TEXTLINE</a>, &x1, &y1, &x2, &y2);</div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  ClipBaseline(ppi, x1, y1, x2, y2, &line_x1, &line_y1, &line_x2, &line_y2);</div>
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  }</div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  </div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  <span class="keywordflow">if</span> (res_it->Empty(<a class="code" href="a01818.html#aa26c22b65cc9765a0e747120f4287fd7afd466aec253e5daa6f0c112b0f0e0610">RIL_WORD</a>)) {</div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  res_it->Next(<a class="code" href="a01818.html#aa26c22b65cc9765a0e747120f4287fd7afd466aec253e5daa6f0c112b0f0e0610">RIL_WORD</a>);</div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  }</div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  </div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  <span class="comment">// Writing direction changes at a per-word granularity</span></div>
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  <a class="code" href="a01818.html#acac5bfbc6e9f8ca26f42ea3bad95d84e">tesseract::WritingDirection</a> writing_direction;</div>
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  {</div>
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  <a class="code" href="a01818.html#a76ce0248fd3ba576ca053e9bb82e492f">tesseract::Orientation</a> orientation;</div>
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  <a class="code" href="a01818.html#a28b14f9ab9d686fb45e130abc15c1781">tesseract::TextlineOrder</a> textline_order;</div>
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  <span class="keywordtype">float</span> deskew_angle;</div>
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  res_it->Orientation(&orientation, &writing_direction,</div>
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  &textline_order, &deskew_angle);</div>
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  <span class="keywordflow">if</span> (writing_direction != <a class="code" href="a01818.html#acac5bfbc6e9f8ca26f42ea3bad95d84ea2101d1745ea753883e7cd89188fe511d">WRITING_DIRECTION_TOP_TO_BOTTOM</a>) {</div>
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  <span class="keywordflow">switch</span> (res_it->WordDirection()) {</div>
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  <span class="keywordflow">case</span> <a class="code" href="a00050.html#abc3119a959ecd5cffc1d9b9d57479dbaa5978cd698552a6106db1bf6528617317">DIR_LEFT_TO_RIGHT</a>:</div>
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  writing_direction = <a class="code" href="a01818.html#acac5bfbc6e9f8ca26f42ea3bad95d84ea525638f610d97a0064cef8e3d25da586">WRITING_DIRECTION_LEFT_TO_RIGHT</a>;</div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  <span class="keywordflow">case</span> <a class="code" href="a00050.html#abc3119a959ecd5cffc1d9b9d57479dbaa3c6da23f98ab8ac48598c21583d9297e">DIR_RIGHT_TO_LEFT</a>:</div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  writing_direction = <a class="code" href="a01818.html#acac5bfbc6e9f8ca26f42ea3bad95d84ea876dcb2db2ae5333ff02decbe5628b24">WRITING_DIRECTION_RIGHT_TO_LEFT</a>;</div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  writing_direction = old_writing_direction;</div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  }</div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  }</div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  }</div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  </div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  <span class="comment">// Where is word origin and how long is it?</span></div>
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  <span class="keywordtype">double</span> x, y, word_length;</div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  {</div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  <span class="keywordtype">int</span> word_x1, word_y1, word_x2, word_y2;</div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  res_it->Baseline(<a class="code" href="a01818.html#aa26c22b65cc9765a0e747120f4287fd7afd466aec253e5daa6f0c112b0f0e0610">RIL_WORD</a>, &word_x1, &word_y1, &word_x2, &word_y2);</div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  GetWordBaseline(writing_direction, ppi, height,</div>
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span>  word_x1, word_y1, word_x2, word_y2,</div>
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  line_x1, line_y1, line_x2, line_y2,</div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  &x, &y, &word_length);</div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  }</div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  </div>
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  <span class="keywordflow">if</span> (writing_direction != old_writing_direction || new_block) {</div>
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  AffineMatrix(writing_direction,</div>
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  line_x1, line_y1, line_x2, line_y2, &a, &b, &c, &d);</div>
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  pdf_str << <span class="stringliteral">" "</span> << prec(a) <span class="comment">// . This affine matrix</span></div>
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  << <span class="stringliteral">" "</span> << prec(b) <span class="comment">// . sets the coordinate</span></div>
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  << <span class="stringliteral">" "</span> << prec(c) <span class="comment">// . system for all</span></div>
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span>  << <span class="stringliteral">" "</span> << prec(d) <span class="comment">// . text that follows.</span></div>
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  << <span class="stringliteral">" "</span> << prec(x) <span class="comment">// .</span></div>
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  << <span class="stringliteral">" "</span> << prec(y) <span class="comment">// .</span></div>
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span>  << (<span class="stringliteral">" Tm "</span>); <span class="comment">// Place cursor absolutely</span></div>
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  new_block = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  <span class="keywordtype">double</span> dx = x - old_x;</div>
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span>  <span class="keywordtype">double</span> dy = y - old_y;</div>
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  pdf_str << <span class="stringliteral">" "</span> << prec(dx * a + dy * b)</div>
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  << <span class="stringliteral">" "</span> << prec(dx * c + dy * d)</div>
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  << (<span class="stringliteral">" Td "</span>); <span class="comment">// Relative moveto</span></div>
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  }</div>
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  old_x = x;</div>
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  old_y = y;</div>
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  old_writing_direction = writing_direction;</div>
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  </div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  <span class="comment">// Adjust font size on a per word granularity. Pay attention to</span></div>
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  <span class="comment">// fontsize, old_fontsize, and pdf_str. We've found that for</span></div>
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  <span class="comment">// in Arabic, Tesseract will happily return a fontsize of zero,</span></div>
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  <span class="comment">// so we make up a default number to protect ourselves.</span></div>
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  {</div>
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  <span class="keywordtype">bool</span> bold, italic, underlined, monospace, serif, smallcaps;</div>
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span>  <span class="keywordtype">int</span> font_id;</div>
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  res_it->WordFontAttributes(&bold, &italic, &underlined, &monospace,</div>
<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  &serif, &smallcaps, &fontsize, &font_id);</div>
<div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> kDefaultFontsize = 8;</div>
<div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  <span class="keywordflow">if</span> (fontsize <= 0)</div>
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  fontsize = kDefaultFontsize;</div>
<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  <span class="keywordflow">if</span> (fontsize != old_fontsize) {</div>
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  pdf_str << <span class="stringliteral">"/f-0-0 "</span> << fontsize << <span class="stringliteral">" Tf "</span>;</div>
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  old_fontsize = fontsize;</div>
<div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  }</div>
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  }</div>
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span>  </div>
<div class="line"><a name="l00450"></a><span class="lineno"> 450</span>  <span class="keywordtype">bool</span> last_word_in_line = res_it->IsAtFinalElement(<a class="code" href="a01818.html#aa26c22b65cc9765a0e747120f4287fd7a5e87a35f16de644593c353159ede11d1">RIL_TEXTLINE</a>, <a class="code" href="a01818.html#aa26c22b65cc9765a0e747120f4287fd7afd466aec253e5daa6f0c112b0f0e0610">RIL_WORD</a>);</div>
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  <span class="keywordtype">bool</span> last_word_in_block = res_it->IsAtFinalElement(<a class="code" href="a01818.html#aa26c22b65cc9765a0e747120f4287fd7a2dcea8d4208c16055353029d26f9bf49">RIL_BLOCK</a>, <a class="code" href="a01818.html#aa26c22b65cc9765a0e747120f4287fd7afd466aec253e5daa6f0c112b0f0e0610">RIL_WORD</a>);</div>
<div class="line"><a name="l00452"></a><span class="lineno"> 452</span>  <a class="code" href="a01622.html#aca454f84dd198a937af6499dd758aa3d">std::string</a> pdf_word;</div>
<div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  <span class="keywordtype">int</span> pdf_word_len = 0;</div>
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  <span class="keywordflow">do</span> {</div>
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  <span class="keyword">const</span> std::unique_ptr<const char[]> grapheme(</div>
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  res_it->GetUTF8Text(<a class="code" href="a01818.html#aa26c22b65cc9765a0e747120f4287fd7adbd62c7f34a9ebdd6e3b813a34cd812d">RIL_SYMBOL</a>));</div>
<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  <span class="keywordflow">if</span> (grapheme && grapheme[0] != <span class="charliteral">'\0'</span>) {</div>
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  std::vector<char32> unicodes = <a class="code" href="a02554.html#aaf9abe60ed0d8b36b5efb00119637485">UNICHAR::UTF8ToUTF32</a>(grapheme.get());</div>
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  <span class="keywordtype">char</span> utf16[kMaxBytesPerCodepoint];</div>
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  <span class="keywordflow">for</span> (<a class="code" href="a01367.html#aecc7a1742fed875e05210e995739f10c">char32</a> code : unicodes) {</div>
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  <span class="keywordflow">if</span> (CodepointToUtf16be(code, utf16)) {</div>
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span>  pdf_word += utf16;</div>
<div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  pdf_word_len++;</div>
<div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  }</div>
<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  }</div>
<div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  }</div>
<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  res_it->Next(<a class="code" href="a01818.html#aa26c22b65cc9765a0e747120f4287fd7adbd62c7f34a9ebdd6e3b813a34cd812d">RIL_SYMBOL</a>);</div>
<div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  } <span class="keywordflow">while</span> (!res_it->Empty(<a class="code" href="a01818.html#aa26c22b65cc9765a0e747120f4287fd7a2dcea8d4208c16055353029d26f9bf49">RIL_BLOCK</a>) && !res_it->IsAtBeginningOf(<a class="code" href="a01818.html#aa26c22b65cc9765a0e747120f4287fd7afd466aec253e5daa6f0c112b0f0e0610">RIL_WORD</a>));</div>
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  <span class="keywordflow">if</span> (res_it->IsAtBeginningOf(<a class="code" href="a01818.html#aa26c22b65cc9765a0e747120f4287fd7afd466aec253e5daa6f0c112b0f0e0610">RIL_WORD</a>)) {</div>
<div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  pdf_word += <span class="stringliteral">"0020"</span>;</div>
<div class="line"><a name="l00471"></a><span class="lineno"> 471</span>  pdf_word_len++;</div>
<div class="line"><a name="l00472"></a><span class="lineno"> 472</span>  }</div>
<div class="line"><a name="l00473"></a><span class="lineno"> 473</span>  <span class="keywordflow">if</span> (word_length > 0 && pdf_word_len > 0) {</div>
<div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  <span class="keywordtype">double</span> h_stretch =</div>
<div class="line"><a name="l00475"></a><span class="lineno"> 475</span>  kCharWidth * prec(100.0 * word_length / (fontsize * pdf_word_len));</div>
<div class="line"><a name="l00476"></a><span class="lineno"> 476</span>  pdf_str << h_stretch << <span class="stringliteral">" Tz"</span> <span class="comment">// horizontal stretch</span></div>
<div class="line"><a name="l00477"></a><span class="lineno"> 477</span>  << <span class="stringliteral">" [ <"</span> << pdf_word <span class="comment">// UTF-16BE representation</span></div>
<div class="line"><a name="l00478"></a><span class="lineno"> 478</span>  << <span class="stringliteral">"> ] TJ"</span>; <span class="comment">// show the text</span></div>
<div class="line"><a name="l00479"></a><span class="lineno"> 479</span>  }</div>
<div class="line"><a name="l00480"></a><span class="lineno"> 480</span>  <span class="keywordflow">if</span> (last_word_in_line) {</div>
<div class="line"><a name="l00481"></a><span class="lineno"> 481</span>  pdf_str << <span class="stringliteral">" \n"</span>;</div>
<div class="line"><a name="l00482"></a><span class="lineno"> 482</span>  }</div>
<div class="line"><a name="l00483"></a><span class="lineno"> 483</span>  <span class="keywordflow">if</span> (last_word_in_block) {</div>
<div class="line"><a name="l00484"></a><span class="lineno"> 484</span>  pdf_str << <span class="stringliteral">"ET\n"</span>; <span class="comment">// end the text object</span></div>
<div class="line"><a name="l00485"></a><span class="lineno"> 485</span>  }</div>
<div class="line"><a name="l00486"></a><span class="lineno"> 486</span>  }</div>
<div class="line"><a name="l00487"></a><span class="lineno"> 487</span>  <span class="keyword">const</span> <a class="code" href="a01622.html#aca454f84dd198a937af6499dd758aa3d">std::string</a>& text = pdf_str.str();</div>
<div class="line"><a name="l00488"></a><span class="lineno"> 488</span>  <span class="keywordtype">char</span>* result = <span class="keyword">new</span> <span class="keywordtype">char</span>[text.length() + 1];</div>
<div class="line"><a name="l00489"></a><span class="lineno"> 489</span>  strcpy(result, text.c_str());</div>
<div class="line"><a name="l00490"></a><span class="lineno"> 490</span>  <span class="keyword">delete</span> res_it;</div>
<div class="line"><a name="l00491"></a><span class="lineno"> 491</span>  <span class="keywordflow">return</span> result;</div>
<div class="line"><a name="l00492"></a><span class="lineno"> 492</span> }</div>
<div class="line"><a name="l00493"></a><span class="lineno"><a class="line" href="a02510.html#a6ad370626e6e1cd559702ce718aa696b"> 493</a></span>  </div>
<div class="line"><a name="l00494"></a><span class="lineno"> 494</span> <span class="keywordtype">bool</span> <a class="code" href="a02510.html#a6ad370626e6e1cd559702ce718aa696b">TessPDFRenderer::BeginDocumentHandler</a>() {</div>
<div class="line"><a name="l00495"></a><span class="lineno"> 495</span>  AppendPDFObject(<span class="stringliteral">"%PDF-1.5\n%\xDE\xAD\xBE\xEB\n"</span>);</div>
<div class="line"><a name="l00496"></a><span class="lineno"> 496</span>  </div>
<div class="line"><a name="l00497"></a><span class="lineno"> 497</span>  <span class="comment">// CATALOG</span></div>
<div class="line"><a name="l00498"></a><span class="lineno"> 498</span>  AppendPDFObject(<span class="stringliteral">"1 0 obj\n"</span></div>
<div class="line"><a name="l00499"></a><span class="lineno"> 499</span>  <span class="stringliteral">"<<\n"</span></div>
<div class="line"><a name="l00500"></a><span class="lineno"> 500</span>  <span class="stringliteral">" /Type /Catalog\n"</span></div>
<div class="line"><a name="l00501"></a><span class="lineno"> 501</span>  <span class="stringliteral">" /Pages 2 0 R\n"</span></div>
<div class="line"><a name="l00502"></a><span class="lineno"> 502</span>  <span class="stringliteral">">>\nendobj\n"</span>);</div>
<div class="line"><a name="l00503"></a><span class="lineno"> 503</span>  </div>
<div class="line"><a name="l00504"></a><span class="lineno"> 504</span>  <span class="comment">// We are reserving object #2 for the /Pages</span></div>
<div class="line"><a name="l00505"></a><span class="lineno"> 505</span>  <span class="comment">// object, which I am going to create and write</span></div>
<div class="line"><a name="l00506"></a><span class="lineno"> 506</span>  <span class="comment">// at the end of the PDF file.</span></div>
<div class="line"><a name="l00507"></a><span class="lineno"> 507</span>  AppendPDFObject(<span class="stringliteral">""</span>);</div>
<div class="line"><a name="l00508"></a><span class="lineno"> 508</span>  </div>
<div class="line"><a name="l00509"></a><span class="lineno"> 509</span>  <span class="comment">// TYPE0 FONT</span></div>
<div class="line"><a name="l00510"></a><span class="lineno"> 510</span>  AppendPDFObject(<span class="stringliteral">"3 0 obj\n"</span></div>
<div class="line"><a name="l00511"></a><span class="lineno"> 511</span>  <span class="stringliteral">"<<\n"</span></div>
<div class="line"><a name="l00512"></a><span class="lineno"> 512</span>  <span class="stringliteral">" /BaseFont /GlyphLessFont\n"</span></div>
<div class="line"><a name="l00513"></a><span class="lineno"> 513</span>  <span class="stringliteral">" /DescendantFonts [ 4 0 R ]\n"</span> <span class="comment">// CIDFontType2 font</span></div>
<div class="line"><a name="l00514"></a><span class="lineno"> 514</span>  <span class="stringliteral">" /Encoding /Identity-H\n"</span></div>
<div class="line"><a name="l00515"></a><span class="lineno"> 515</span>  <span class="stringliteral">" /Subtype /Type0\n"</span></div>
<div class="line"><a name="l00516"></a><span class="lineno"> 516</span>  <span class="stringliteral">" /ToUnicode 6 0 R\n"</span> <span class="comment">// ToUnicode</span></div>
<div class="line"><a name="l00517"></a><span class="lineno"> 517</span>  <span class="stringliteral">" /Type /Font\n"</span></div>
<div class="line"><a name="l00518"></a><span class="lineno"> 518</span>  <span class="stringliteral">">>\n"</span></div>
<div class="line"><a name="l00519"></a><span class="lineno"> 519</span>  <span class="stringliteral">"endobj\n"</span>);</div>
<div class="line"><a name="l00520"></a><span class="lineno"> 520</span>  </div>
<div class="line"><a name="l00521"></a><span class="lineno"> 521</span>  <span class="comment">// CIDFONTTYPE2</span></div>
<div class="line"><a name="l00522"></a><span class="lineno"> 522</span>  std::stringstream stream;</div>
<div class="line"><a name="l00523"></a><span class="lineno"> 523</span>  <span class="comment">// Use "C" locale (needed for int values larger than 999).</span></div>
<div class="line"><a name="l00524"></a><span class="lineno"> 524</span>  stream.imbue(std::locale::classic());</div>
<div class="line"><a name="l00525"></a><span class="lineno"> 525</span>  stream <<</div>
<div class="line"><a name="l00526"></a><span class="lineno"> 526</span>  <span class="stringliteral">"4 0 obj\n"</span></div>
<div class="line"><a name="l00527"></a><span class="lineno"> 527</span>  <span class="stringliteral">"<<\n"</span></div>
<div class="line"><a name="l00528"></a><span class="lineno"> 528</span>  <span class="stringliteral">" /BaseFont /GlyphLessFont\n"</span></div>
<div class="line"><a name="l00529"></a><span class="lineno"> 529</span>  <span class="stringliteral">" /CIDToGIDMap 5 0 R\n"</span> <span class="comment">// CIDToGIDMap</span></div>
<div class="line"><a name="l00530"></a><span class="lineno"> 530</span>  <span class="stringliteral">" /CIDSystemInfo\n"</span></div>
<div class="line"><a name="l00531"></a><span class="lineno"> 531</span>  <span class="stringliteral">" <<\n"</span></div>
<div class="line"><a name="l00532"></a><span class="lineno"> 532</span>  <span class="stringliteral">" /Ordering (Identity)\n"</span></div>
<div class="line"><a name="l00533"></a><span class="lineno"> 533</span>  <span class="stringliteral">" /Registry (Adobe)\n"</span></div>
<div class="line"><a name="l00534"></a><span class="lineno"> 534</span>  <span class="stringliteral">" /Supplement 0\n"</span></div>
<div class="line"><a name="l00535"></a><span class="lineno"> 535</span>  <span class="stringliteral">" >>\n"</span></div>
<div class="line"><a name="l00536"></a><span class="lineno"> 536</span>  <span class="stringliteral">" /FontDescriptor 7 0 R\n"</span> <span class="comment">// Font descriptor</span></div>
<div class="line"><a name="l00537"></a><span class="lineno"> 537</span>  <span class="stringliteral">" /Subtype /CIDFontType2\n"</span></div>
<div class="line"><a name="l00538"></a><span class="lineno"> 538</span>  <span class="stringliteral">" /Type /Font\n"</span></div>
<div class="line"><a name="l00539"></a><span class="lineno"> 539</span>  <span class="stringliteral">" /DW "</span> << (1000 / kCharWidth) << <span class="stringliteral">"\n"</span></div>
<div class="line"><a name="l00540"></a><span class="lineno"> 540</span>  <span class="stringliteral">">>\n"</span></div>
<div class="line"><a name="l00541"></a><span class="lineno"> 541</span>  <span class="stringliteral">"endobj\n"</span>;</div>
<div class="line"><a name="l00542"></a><span class="lineno"> 542</span>  AppendPDFObject(stream.str().c_str());</div>
<div class="line"><a name="l00543"></a><span class="lineno"> 543</span>  </div>
<div class="line"><a name="l00544"></a><span class="lineno"> 544</span>  <span class="comment">// CIDTOGIDMAP</span></div>
<div class="line"><a name="l00545"></a><span class="lineno"> 545</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> kCIDToGIDMapSize = 2 * (1 << 16);</div>
<div class="line"><a name="l00546"></a><span class="lineno"> 546</span>  <span class="keyword">const</span> std::unique_ptr<unsigned char[]> cidtogidmap(</div>
<div class="line"><a name="l00547"></a><span class="lineno"> 547</span>  <span class="keyword">new</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>[kCIDToGIDMapSize]);</div>
<div class="line"><a name="l00548"></a><span class="lineno"> 548</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < kCIDToGIDMapSize; i++) {</div>
<div class="line"><a name="l00549"></a><span class="lineno"> 549</span>  cidtogidmap[i] = (i % 2) ? 1 : 0;</div>
<div class="line"><a name="l00550"></a><span class="lineno"> 550</span>  }</div>
<div class="line"><a name="l00551"></a><span class="lineno"> 551</span>  <span class="keywordtype">size_t</span> len;</div>
<div class="line"><a name="l00552"></a><span class="lineno"> 552</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *comp = zlibCompress(cidtogidmap.get(), kCIDToGIDMapSize, &len);</div>
<div class="line"><a name="l00553"></a><span class="lineno"> 553</span>  stream.str(<span class="stringliteral">""</span>);</div>
<div class="line"><a name="l00554"></a><span class="lineno"> 554</span>  stream <<</div>
<div class="line"><a name="l00555"></a><span class="lineno"> 555</span>  <span class="stringliteral">"5 0 obj\n"</span></div>
<div class="line"><a name="l00556"></a><span class="lineno"> 556</span>  <span class="stringliteral">"<<\n"</span></div>
<div class="line"><a name="l00557"></a><span class="lineno"> 557</span>  <span class="stringliteral">" /Length "</span> << len << <span class="stringliteral">" /Filter /FlateDecode\n"</span></div>
<div class="line"><a name="l00558"></a><span class="lineno"> 558</span>  <span class="stringliteral">">>\n"</span></div>
<div class="line"><a name="l00559"></a><span class="lineno"> 559</span>  <span class="stringliteral">"stream\n"</span>;</div>
<div class="line"><a name="l00560"></a><span class="lineno"> 560</span>  <a class="code" href="a02490.html#a9d903a379bfc1467618b8ee616ba64b6">AppendString</a>(stream.str().c_str());</div>
<div class="line"><a name="l00561"></a><span class="lineno"> 561</span>  <span class="keywordtype">long</span> objsize = stream.str().size();</div>
<div class="line"><a name="l00562"></a><span class="lineno"> 562</span>  <a class="code" href="a02490.html#adfd158aaf385d1410d65ec01d1a62145">AppendData</a>(reinterpret_cast<char *>(comp), len);</div>
<div class="line"><a name="l00563"></a><span class="lineno"> 563</span>  objsize += len;</div>
<div class="line"><a name="l00564"></a><span class="lineno"> 564</span>  lept_free(comp);</div>
<div class="line"><a name="l00565"></a><span class="lineno"> 565</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> *endstream_endobj =</div>
<div class="line"><a name="l00566"></a><span class="lineno"> 566</span>  <span class="stringliteral">"endstream\n"</span></div>
<div class="line"><a name="l00567"></a><span class="lineno"> 567</span>  <span class="stringliteral">"endobj\n"</span>;</div>
<div class="line"><a name="l00568"></a><span class="lineno"> 568</span>  <a class="code" href="a02490.html#a9d903a379bfc1467618b8ee616ba64b6">AppendString</a>(endstream_endobj);</div>
<div class="line"><a name="l00569"></a><span class="lineno"> 569</span>  objsize += strlen(endstream_endobj);</div>
<div class="line"><a name="l00570"></a><span class="lineno"> 570</span>  AppendPDFObjectDIY(objsize);</div>
<div class="line"><a name="l00571"></a><span class="lineno"> 571</span>  </div>
<div class="line"><a name="l00572"></a><span class="lineno"> 572</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> stream2[] =</div>
<div class="line"><a name="l00573"></a><span class="lineno"> 573</span>  <span class="stringliteral">"/CIDInit /ProcSet findresource begin\n"</span></div>
<div class="line"><a name="l00574"></a><span class="lineno"> 574</span>  <span class="stringliteral">"12 dict begin\n"</span></div>
<div class="line"><a name="l00575"></a><span class="lineno"> 575</span>  <span class="stringliteral">"begincmap\n"</span></div>
<div class="line"><a name="l00576"></a><span class="lineno"> 576</span>  <span class="stringliteral">"/CIDSystemInfo\n"</span></div>
<div class="line"><a name="l00577"></a><span class="lineno"> 577</span>  <span class="stringliteral">"<<\n"</span></div>
<div class="line"><a name="l00578"></a><span class="lineno"> 578</span>  <span class="stringliteral">" /Registry (Adobe)\n"</span></div>
<div class="line"><a name="l00579"></a><span class="lineno"> 579</span>  <span class="stringliteral">" /Ordering (UCS)\n"</span></div>
<div class="line"><a name="l00580"></a><span class="lineno"> 580</span>  <span class="stringliteral">" /Supplement 0\n"</span></div>
<div class="line"><a name="l00581"></a><span class="lineno"> 581</span>  <span class="stringliteral">">> def\n"</span></div>
<div class="line"><a name="l00582"></a><span class="lineno"> 582</span>  <span class="stringliteral">"/CMapName /Adobe-Identify-UCS def\n"</span></div>
<div class="line"><a name="l00583"></a><span class="lineno"> 583</span>  <span class="stringliteral">"/CMapType 2 def\n"</span></div>
<div class="line"><a name="l00584"></a><span class="lineno"> 584</span>  <span class="stringliteral">"1 begincodespacerange\n"</span></div>
<div class="line"><a name="l00585"></a><span class="lineno"> 585</span>  <span class="stringliteral">"<0000> <FFFF>\n"</span></div>
<div class="line"><a name="l00586"></a><span class="lineno"> 586</span>  <span class="stringliteral">"endcodespacerange\n"</span></div>
<div class="line"><a name="l00587"></a><span class="lineno"> 587</span>  <span class="stringliteral">"1 beginbfrange\n"</span></div>
<div class="line"><a name="l00588"></a><span class="lineno"> 588</span>  <span class="stringliteral">"<0000> <FFFF> <0000>\n"</span></div>
<div class="line"><a name="l00589"></a><span class="lineno"> 589</span>  <span class="stringliteral">"endbfrange\n"</span></div>
<div class="line"><a name="l00590"></a><span class="lineno"> 590</span>  <span class="stringliteral">"endcmap\n"</span></div>
<div class="line"><a name="l00591"></a><span class="lineno"> 591</span>  <span class="stringliteral">"CMapName currentdict /CMap defineresource pop\n"</span></div>
<div class="line"><a name="l00592"></a><span class="lineno"> 592</span>  <span class="stringliteral">"end\n"</span></div>
<div class="line"><a name="l00593"></a><span class="lineno"> 593</span>  <span class="stringliteral">"end\n"</span>;</div>
<div class="line"><a name="l00594"></a><span class="lineno"> 594</span>  </div>
<div class="line"><a name="l00595"></a><span class="lineno"> 595</span>  <span class="comment">// TOUNICODE</span></div>
<div class="line"><a name="l00596"></a><span class="lineno"> 596</span>  stream.str(<span class="stringliteral">""</span>);</div>
<div class="line"><a name="l00597"></a><span class="lineno"> 597</span>  stream <<</div>
<div class="line"><a name="l00598"></a><span class="lineno"> 598</span>  <span class="stringliteral">"6 0 obj\n"</span></div>
<div class="line"><a name="l00599"></a><span class="lineno"> 599</span>  <span class="stringliteral">"<< /Length "</span> << (<span class="keyword">sizeof</span>(stream2) - 1) << <span class="stringliteral">" >>\n"</span></div>
<div class="line"><a name="l00600"></a><span class="lineno"> 600</span>  <span class="stringliteral">"stream\n"</span> << stream2 <<</div>
<div class="line"><a name="l00601"></a><span class="lineno"> 601</span>  <span class="stringliteral">"endstream\n"</span></div>
<div class="line"><a name="l00602"></a><span class="lineno"> 602</span>  <span class="stringliteral">"endobj\n"</span>;</div>
<div class="line"><a name="l00603"></a><span class="lineno"> 603</span>  AppendPDFObject(stream.str().c_str());</div>
<div class="line"><a name="l00604"></a><span class="lineno"> 604</span>  </div>
<div class="line"><a name="l00605"></a><span class="lineno"> 605</span>  <span class="comment">// FONT DESCRIPTOR</span></div>
<div class="line"><a name="l00606"></a><span class="lineno"> 606</span>  stream.str(<span class="stringliteral">""</span>);</div>
<div class="line"><a name="l00607"></a><span class="lineno"> 607</span>  stream <<</div>
<div class="line"><a name="l00608"></a><span class="lineno"> 608</span>  <span class="stringliteral">"7 0 obj\n"</span></div>
<div class="line"><a name="l00609"></a><span class="lineno"> 609</span>  <span class="stringliteral">"<<\n"</span></div>
<div class="line"><a name="l00610"></a><span class="lineno"> 610</span>  <span class="stringliteral">" /Ascent 1000\n"</span></div>
<div class="line"><a name="l00611"></a><span class="lineno"> 611</span>  <span class="stringliteral">" /CapHeight 1000\n"</span></div>
<div class="line"><a name="l00612"></a><span class="lineno"> 612</span>  <span class="stringliteral">" /Descent -1\n"</span> <span class="comment">// Spec says must be negative</span></div>
<div class="line"><a name="l00613"></a><span class="lineno"> 613</span>  <span class="stringliteral">" /Flags 5\n"</span> <span class="comment">// FixedPitch + Symbolic</span></div>
<div class="line"><a name="l00614"></a><span class="lineno"> 614</span>  <span class="stringliteral">" /FontBBox [ 0 0 "</span> << (1000 / kCharWidth) << <span class="stringliteral">" 1000 ]\n"</span></div>
<div class="line"><a name="l00615"></a><span class="lineno"> 615</span>  <span class="stringliteral">" /FontFile2 8 0 R\n"</span></div>
<div class="line"><a name="l00616"></a><span class="lineno"> 616</span>  <span class="stringliteral">" /FontName /GlyphLessFont\n"</span></div>
<div class="line"><a name="l00617"></a><span class="lineno"> 617</span>  <span class="stringliteral">" /ItalicAngle 0\n"</span></div>
<div class="line"><a name="l00618"></a><span class="lineno"> 618</span>  <span class="stringliteral">" /StemV 80\n"</span></div>
<div class="line"><a name="l00619"></a><span class="lineno"> 619</span>  <span class="stringliteral">" /Type /FontDescriptor\n"</span></div>
<div class="line"><a name="l00620"></a><span class="lineno"> 620</span>  <span class="stringliteral">">>\n"</span></div>
<div class="line"><a name="l00621"></a><span class="lineno"> 621</span>  <span class="stringliteral">"endobj\n"</span>;</div>
<div class="line"><a name="l00622"></a><span class="lineno"> 622</span>  AppendPDFObject(stream.str().c_str());</div>
<div class="line"><a name="l00623"></a><span class="lineno"> 623</span>  </div>
<div class="line"><a name="l00624"></a><span class="lineno"> 624</span>  stream.str(<span class="stringliteral">""</span>);</div>
<div class="line"><a name="l00625"></a><span class="lineno"> 625</span>  stream << datadir_.c_str() << <span class="stringliteral">"/pdf.ttf"</span>;</div>
<div class="line"><a name="l00626"></a><span class="lineno"> 626</span>  FILE *fp = fopen(stream.str().c_str(), <span class="stringliteral">"rb"</span>);</div>
<div class="line"><a name="l00627"></a><span class="lineno"> 627</span>  <span class="keywordflow">if</span> (!fp) {</div>
<div class="line"><a name="l00628"></a><span class="lineno"> 628</span>  <a class="code" href="a00581.html#a0c2bcd4462ec67ab0971b34a0f610f55">tprintf</a>(<span class="stringliteral">"Cannot open file \"%s\"!\n"</span>, stream.str().c_str());</div>
<div class="line"><a name="l00629"></a><span class="lineno"> 629</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00630"></a><span class="lineno"> 630</span>  }</div>
<div class="line"><a name="l00631"></a><span class="lineno"> 631</span>  fseek(fp, 0, SEEK_END);</div>
<div class="line"><a name="l00632"></a><span class="lineno"> 632</span>  <span class="keyword">auto</span> size = std::ftell(fp);</div>
<div class="line"><a name="l00633"></a><span class="lineno"> 633</span>  <span class="keywordflow">if</span> (size < 0) {</div>
<div class="line"><a name="l00634"></a><span class="lineno"> 634</span>  fclose(fp);</div>
<div class="line"><a name="l00635"></a><span class="lineno"> 635</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00636"></a><span class="lineno"> 636</span>  }</div>
<div class="line"><a name="l00637"></a><span class="lineno"> 637</span>  fseek(fp, 0, SEEK_SET);</div>
<div class="line"><a name="l00638"></a><span class="lineno"> 638</span>  <span class="keyword">const</span> std::unique_ptr<char[]> buffer(<span class="keyword">new</span> <span class="keywordtype">char</span>[size]);</div>
<div class="line"><a name="l00639"></a><span class="lineno"> 639</span>  <span class="keywordflow">if</span> (!<a class="code" href="a01818.html#a522554508e3ceb96201f3f3f697df7ae">tesseract::DeSerialize</a>(fp, buffer.get(), size)) {</div>
<div class="line"><a name="l00640"></a><span class="lineno"> 640</span>  fclose(fp);</div>
<div class="line"><a name="l00641"></a><span class="lineno"> 641</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00642"></a><span class="lineno"> 642</span>  }</div>
<div class="line"><a name="l00643"></a><span class="lineno"> 643</span>  fclose(fp);</div>
<div class="line"><a name="l00644"></a><span class="lineno"> 644</span>  <span class="comment">// FONTFILE2</span></div>
<div class="line"><a name="l00645"></a><span class="lineno"> 645</span>  stream.str(<span class="stringliteral">""</span>);</div>
<div class="line"><a name="l00646"></a><span class="lineno"> 646</span>  stream <<</div>
<div class="line"><a name="l00647"></a><span class="lineno"> 647</span>  <span class="stringliteral">"8 0 obj\n"</span></div>
<div class="line"><a name="l00648"></a><span class="lineno"> 648</span>  <span class="stringliteral">"<<\n"</span></div>
<div class="line"><a name="l00649"></a><span class="lineno"> 649</span>  <span class="stringliteral">" /Length "</span> << size << <span class="stringliteral">"\n"</span></div>
<div class="line"><a name="l00650"></a><span class="lineno"> 650</span>  <span class="stringliteral">" /Length1 "</span> << size << <span class="stringliteral">"\n"</span></div>
<div class="line"><a name="l00651"></a><span class="lineno"> 651</span>  <span class="stringliteral">">>\n"</span></div>
<div class="line"><a name="l00652"></a><span class="lineno"> 652</span>  <span class="stringliteral">"stream\n"</span>;</div>
<div class="line"><a name="l00653"></a><span class="lineno"> 653</span>  <a class="code" href="a02490.html#a9d903a379bfc1467618b8ee616ba64b6">AppendString</a>(stream.str().c_str());</div>
<div class="line"><a name="l00654"></a><span class="lineno"> 654</span>  objsize = stream.str().size();</div>
<div class="line"><a name="l00655"></a><span class="lineno"> 655</span>  <a class="code" href="a02490.html#adfd158aaf385d1410d65ec01d1a62145">AppendData</a>(buffer.get(), size);</div>
<div class="line"><a name="l00656"></a><span class="lineno"> 656</span>  objsize += size;</div>
<div class="line"><a name="l00657"></a><span class="lineno"> 657</span>  <a class="code" href="a02490.html#a9d903a379bfc1467618b8ee616ba64b6">AppendString</a>(endstream_endobj);</div>
<div class="line"><a name="l00658"></a><span class="lineno"> 658</span>  objsize += strlen(endstream_endobj);</div>
<div class="line"><a name="l00659"></a><span class="lineno"> 659</span>  AppendPDFObjectDIY(objsize);</div>
<div class="line"><a name="l00660"></a><span class="lineno"> 660</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00661"></a><span class="lineno"> 661</span> }</div>
<div class="line"><a name="l00662"></a><span class="lineno"> 662</span>  </div>
<div class="line"><a name="l00663"></a><span class="lineno"> 663</span> <span class="keywordtype">bool</span> TessPDFRenderer::imageToPDFObj(Pix *pix,</div>
<div class="line"><a name="l00664"></a><span class="lineno"> 664</span>  <span class="keyword">const</span> <span class="keywordtype">char</span>* filename,</div>
<div class="line"><a name="l00665"></a><span class="lineno"> 665</span>  <span class="keywordtype">long</span> <span class="keywordtype">int</span> objnum,</div>
<div class="line"><a name="l00666"></a><span class="lineno"> 666</span>  <span class="keywordtype">char</span> **pdf_object,</div>
<div class="line"><a name="l00667"></a><span class="lineno"> 667</span>  <span class="keywordtype">long</span> <span class="keywordtype">int</span>* pdf_object_size,</div>
<div class="line"><a name="l00668"></a><span class="lineno"> 668</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> jpg_quality) {</div>
<div class="line"><a name="l00669"></a><span class="lineno"> 669</span>  <span class="keywordflow">if</span> (!pdf_object_size || !pdf_object)</div>
<div class="line"><a name="l00670"></a><span class="lineno"> 670</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00671"></a><span class="lineno"> 671</span>  *pdf_object = <span class="keyword">nullptr</span>;</div>
<div class="line"><a name="l00672"></a><span class="lineno"> 672</span>  *pdf_object_size = 0;</div>
<div class="line"><a name="l00673"></a><span class="lineno"> 673</span>  <span class="keywordflow">if</span> (!filename && !pix)</div>
<div class="line"><a name="l00674"></a><span class="lineno"> 674</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00675"></a><span class="lineno"> 675</span>  </div>
<div class="line"><a name="l00676"></a><span class="lineno"> 676</span>  L_Compressed_Data *cid = <span class="keyword">nullptr</span>;</div>
<div class="line"><a name="l00677"></a><span class="lineno"> 677</span>  </div>
<div class="line"><a name="l00678"></a><span class="lineno"> 678</span>  <span class="keywordtype">int</span> sad = 0;</div>
<div class="line"><a name="l00679"></a><span class="lineno"> 679</span>  <span class="keywordflow">if</span> (pixGetInputFormat(pix) == IFF_PNG)</div>
<div class="line"><a name="l00680"></a><span class="lineno"> 680</span>  sad = pixGenerateCIData(pix, L_FLATE_ENCODE, 0, 0, &cid);</div>
<div class="line"><a name="l00681"></a><span class="lineno"> 681</span>  <span class="keywordflow">if</span> (!cid) {</div>
<div class="line"><a name="l00682"></a><span class="lineno"> 682</span>  sad = l_generateCIDataForPdf(filename, pix, jpg_quality, &cid);</div>
<div class="line"><a name="l00683"></a><span class="lineno"> 683</span>  }</div>
<div class="line"><a name="l00684"></a><span class="lineno"> 684</span>  </div>
<div class="line"><a name="l00685"></a><span class="lineno"> 685</span>  <span class="keywordflow">if</span> (sad || !cid) {</div>
<div class="line"><a name="l00686"></a><span class="lineno"> 686</span>  l_CIDataDestroy(&cid);</div>
<div class="line"><a name="l00687"></a><span class="lineno"> 687</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00688"></a><span class="lineno"> 688</span>  }</div>
<div class="line"><a name="l00689"></a><span class="lineno"> 689</span>  </div>
<div class="line"><a name="l00690"></a><span class="lineno"> 690</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> *group4 = <span class="stringliteral">""</span>;</div>
<div class="line"><a name="l00691"></a><span class="lineno"> 691</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> *filter;</div>
<div class="line"><a name="l00692"></a><span class="lineno"> 692</span>  <span class="keywordflow">switch</span>(cid->type) {</div>
<div class="line"><a name="l00693"></a><span class="lineno"> 693</span>  <span class="keywordflow">case</span> L_FLATE_ENCODE:</div>
<div class="line"><a name="l00694"></a><span class="lineno"> 694</span>  filter = <span class="stringliteral">"/FlateDecode"</span>;</div>
<div class="line"><a name="l00695"></a><span class="lineno"> 695</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00696"></a><span class="lineno"> 696</span>  <span class="keywordflow">case</span> L_JPEG_ENCODE:</div>
<div class="line"><a name="l00697"></a><span class="lineno"> 697</span>  filter = <span class="stringliteral">"/DCTDecode"</span>;</div>
<div class="line"><a name="l00698"></a><span class="lineno"> 698</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00699"></a><span class="lineno"> 699</span>  <span class="keywordflow">case</span> L_G4_ENCODE:</div>
<div class="line"><a name="l00700"></a><span class="lineno"> 700</span>  filter = <span class="stringliteral">"/CCITTFaxDecode"</span>;</div>
<div class="line"><a name="l00701"></a><span class="lineno"> 701</span>  group4 = <span class="stringliteral">" /K -1\n"</span>;</div>
<div class="line"><a name="l00702"></a><span class="lineno"> 702</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00703"></a><span class="lineno"> 703</span>  <span class="keywordflow">case</span> L_JP2K_ENCODE:</div>
<div class="line"><a name="l00704"></a><span class="lineno"> 704</span>  filter = <span class="stringliteral">"/JPXDecode"</span>;</div>
<div class="line"><a name="l00705"></a><span class="lineno"> 705</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00706"></a><span class="lineno"> 706</span>  <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00707"></a><span class="lineno"> 707</span>  l_CIDataDestroy(&cid);</div>
<div class="line"><a name="l00708"></a><span class="lineno"> 708</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00709"></a><span class="lineno"> 709</span>  }</div>
<div class="line"><a name="l00710"></a><span class="lineno"> 710</span>  </div>
<div class="line"><a name="l00711"></a><span class="lineno"> 711</span>  <span class="comment">// Maybe someday we will accept RGBA but today is not that day.</span></div>
<div class="line"><a name="l00712"></a><span class="lineno"> 712</span>  <span class="comment">// It requires creating an /SMask for the alpha channel.</span></div>
<div class="line"><a name="l00713"></a><span class="lineno"> 713</span>  <span class="comment">// http://stackoverflow.com/questions/14220221</span></div>
<div class="line"><a name="l00714"></a><span class="lineno"> 714</span>  std::stringstream colorspace;</div>
<div class="line"><a name="l00715"></a><span class="lineno"> 715</span>  <span class="comment">// Use "C" locale (needed for int values larger than 999).</span></div>
<div class="line"><a name="l00716"></a><span class="lineno"> 716</span>  colorspace.imbue(std::locale::classic());</div>
<div class="line"><a name="l00717"></a><span class="lineno"> 717</span>  <span class="keywordflow">if</span> (cid->ncolors > 0) {</div>
<div class="line"><a name="l00718"></a><span class="lineno"> 718</span>  colorspace</div>
<div class="line"><a name="l00719"></a><span class="lineno"> 719</span>  << <span class="stringliteral">" /ColorSpace [ /Indexed /DeviceRGB "</span> << (cid->ncolors - 1)</div>
<div class="line"><a name="l00720"></a><span class="lineno"> 720</span>  << <span class="stringliteral">" "</span> << cid->cmapdatahex << <span class="stringliteral">" ]\n"</span>;</div>
<div class="line"><a name="l00721"></a><span class="lineno"> 721</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00722"></a><span class="lineno"> 722</span>  <span class="keywordflow">switch</span> (cid->spp) {</div>
<div class="line"><a name="l00723"></a><span class="lineno"> 723</span>  <span class="keywordflow">case</span> 1:</div>
<div class="line"><a name="l00724"></a><span class="lineno"> 724</span>  <span class="keywordflow">if</span> (cid->bps == 1 && pixGetInputFormat(pix) == IFF_PNG) {</div>
<div class="line"><a name="l00725"></a><span class="lineno"> 725</span>  colorspace.str(<span class="stringliteral">" /ColorSpace /DeviceGray\n"</span></div>
<div class="line"><a name="l00726"></a><span class="lineno"> 726</span>  <span class="stringliteral">" /Decode [1 0]\n"</span>);</div>
<div class="line"><a name="l00727"></a><span class="lineno"> 727</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00728"></a><span class="lineno"> 728</span>  colorspace.str(<span class="stringliteral">" /ColorSpace /DeviceGray\n"</span>);</div>
<div class="line"><a name="l00729"></a><span class="lineno"> 729</span>  }</div>
<div class="line"><a name="l00730"></a><span class="lineno"> 730</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00731"></a><span class="lineno"> 731</span>  <span class="keywordflow">case</span> 3:</div>
<div class="line"><a name="l00732"></a><span class="lineno"> 732</span>  colorspace.str(<span class="stringliteral">" /ColorSpace /DeviceRGB\n"</span>);</div>
<div class="line"><a name="l00733"></a><span class="lineno"> 733</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00734"></a><span class="lineno"> 734</span>  <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00735"></a><span class="lineno"> 735</span>  l_CIDataDestroy(&cid);</div>
<div class="line"><a name="l00736"></a><span class="lineno"> 736</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00737"></a><span class="lineno"> 737</span>  }</div>
<div class="line"><a name="l00738"></a><span class="lineno"> 738</span>  }</div>
<div class="line"><a name="l00739"></a><span class="lineno"> 739</span>  </div>
<div class="line"><a name="l00740"></a><span class="lineno"> 740</span>  <span class="keywordtype">int</span> predictor = (cid->predictor) ? 14 : 1;</div>
<div class="line"><a name="l00741"></a><span class="lineno"> 741</span>  </div>
<div class="line"><a name="l00742"></a><span class="lineno"> 742</span>  <span class="comment">// IMAGE</span></div>
<div class="line"><a name="l00743"></a><span class="lineno"> 743</span>  std::stringstream b1;</div>
<div class="line"><a name="l00744"></a><span class="lineno"> 744</span>  <span class="comment">// Use "C" locale (needed for int values larger than 999).</span></div>
<div class="line"><a name="l00745"></a><span class="lineno"> 745</span>  b1.imbue(std::locale::classic());</div>
<div class="line"><a name="l00746"></a><span class="lineno"> 746</span>  b1 <<</div>
<div class="line"><a name="l00747"></a><span class="lineno"> 747</span>  objnum << <span class="stringliteral">" 0 obj\n"</span></div>
<div class="line"><a name="l00748"></a><span class="lineno"> 748</span>  <span class="stringliteral">"<<\n"</span></div>
<div class="line"><a name="l00749"></a><span class="lineno"> 749</span>  <span class="stringliteral">" /Length "</span> << cid->nbytescomp << <span class="stringliteral">"\n"</span></div>
<div class="line"><a name="l00750"></a><span class="lineno"> 750</span>  <span class="stringliteral">" /Subtype /Image\n"</span>;</div>
<div class="line"><a name="l00751"></a><span class="lineno"> 751</span>  </div>
<div class="line"><a name="l00752"></a><span class="lineno"> 752</span>  std::stringstream b2;</div>
<div class="line"><a name="l00753"></a><span class="lineno"> 753</span>  <span class="comment">// Use "C" locale (needed for int values larger than 999).</span></div>
<div class="line"><a name="l00754"></a><span class="lineno"> 754</span>  b2.imbue(std::locale::classic());</div>
<div class="line"><a name="l00755"></a><span class="lineno"> 755</span>  b2 <<</div>
<div class="line"><a name="l00756"></a><span class="lineno"> 756</span>  <span class="stringliteral">" /Width "</span> << cid->w << <span class="stringliteral">"\n"</span></div>
<div class="line"><a name="l00757"></a><span class="lineno"> 757</span>  <span class="stringliteral">" /Height "</span> << cid->h << <span class="stringliteral">"\n"</span></div>
<div class="line"><a name="l00758"></a><span class="lineno"> 758</span>  <span class="stringliteral">" /BitsPerComponent "</span> << cid->bps << <span class="stringliteral">"\n"</span></div>
<div class="line"><a name="l00759"></a><span class="lineno"> 759</span>  <span class="stringliteral">" /Filter "</span> << filter << <span class="stringliteral">"\n"</span></div>
<div class="line"><a name="l00760"></a><span class="lineno"> 760</span>  <span class="stringliteral">" /DecodeParms\n"</span></div>
<div class="line"><a name="l00761"></a><span class="lineno"> 761</span>  <span class="stringliteral">" <<\n"</span></div>
<div class="line"><a name="l00762"></a><span class="lineno"> 762</span>  <span class="stringliteral">" /Predictor "</span> << predictor << <span class="stringliteral">"\n"</span></div>
<div class="line"><a name="l00763"></a><span class="lineno"> 763</span>  <span class="stringliteral">" /Colors "</span> << cid->spp << <span class="stringliteral">"\n"</span> << group4 <<</div>
<div class="line"><a name="l00764"></a><span class="lineno"> 764</span>  <span class="stringliteral">" /Columns "</span> << cid->w << <span class="stringliteral">"\n"</span></div>
<div class="line"><a name="l00765"></a><span class="lineno"> 765</span>  <span class="stringliteral">" /BitsPerComponent "</span> << cid->bps << <span class="stringliteral">"\n"</span></div>
<div class="line"><a name="l00766"></a><span class="lineno"> 766</span>  <span class="stringliteral">" >>\n"</span></div>
<div class="line"><a name="l00767"></a><span class="lineno"> 767</span>  <span class="stringliteral">">>\n"</span></div>
<div class="line"><a name="l00768"></a><span class="lineno"> 768</span>  <span class="stringliteral">"stream\n"</span>;</div>
<div class="line"><a name="l00769"></a><span class="lineno"> 769</span>  </div>
<div class="line"><a name="l00770"></a><span class="lineno"> 770</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> *b3 =</div>
<div class="line"><a name="l00771"></a><span class="lineno"> 771</span>  <span class="stringliteral">"endstream\n"</span></div>
<div class="line"><a name="l00772"></a><span class="lineno"> 772</span>  <span class="stringliteral">"endobj\n"</span>;</div>
<div class="line"><a name="l00773"></a><span class="lineno"> 773</span>  </div>
<div class="line"><a name="l00774"></a><span class="lineno"> 774</span>  <span class="keywordtype">size_t</span> b1_len = b1.str().size();</div>
<div class="line"><a name="l00775"></a><span class="lineno"> 775</span>  <span class="keywordtype">size_t</span> b2_len = b2.str().size();</div>
<div class="line"><a name="l00776"></a><span class="lineno"> 776</span>  <span class="keywordtype">size_t</span> b3_len = strlen(b3);</div>
<div class="line"><a name="l00777"></a><span class="lineno"> 777</span>  <span class="keywordtype">size_t</span> colorspace_len = colorspace.str().size();</div>
<div class="line"><a name="l00778"></a><span class="lineno"> 778</span>  </div>
<div class="line"><a name="l00779"></a><span class="lineno"> 779</span>  *pdf_object_size =</div>
<div class="line"><a name="l00780"></a><span class="lineno"> 780</span>  b1_len + colorspace_len + b2_len + cid->nbytescomp + b3_len;</div>
<div class="line"><a name="l00781"></a><span class="lineno"> 781</span>  *pdf_object = <span class="keyword">new</span> <span class="keywordtype">char</span>[*pdf_object_size];</div>
<div class="line"><a name="l00782"></a><span class="lineno"> 782</span>  </div>
<div class="line"><a name="l00783"></a><span class="lineno"> 783</span>  <span class="keywordtype">char</span> *p = *pdf_object;</div>
<div class="line"><a name="l00784"></a><span class="lineno"> 784</span>  memcpy(p, b1.str().c_str(), b1_len);</div>
<div class="line"><a name="l00785"></a><span class="lineno"> 785</span>  p += b1_len;</div>
<div class="line"><a name="l00786"></a><span class="lineno"> 786</span>  memcpy(p, colorspace.str().c_str(), colorspace_len);</div>
<div class="line"><a name="l00787"></a><span class="lineno"> 787</span>  p += colorspace_len;</div>
<div class="line"><a name="l00788"></a><span class="lineno"> 788</span>  memcpy(p, b2.str().c_str(), b2_len);</div>
<div class="line"><a name="l00789"></a><span class="lineno"> 789</span>  p += b2_len;</div>
<div class="line"><a name="l00790"></a><span class="lineno"> 790</span>  memcpy(p, cid->datacomp, cid->nbytescomp);</div>
<div class="line"><a name="l00791"></a><span class="lineno"> 791</span>  p += cid->nbytescomp;</div>
<div class="line"><a name="l00792"></a><span class="lineno"> 792</span>  memcpy(p, b3, b3_len);</div>
<div class="line"><a name="l00793"></a><span class="lineno"> 793</span>  l_CIDataDestroy(&cid);</div>
<div class="line"><a name="l00794"></a><span class="lineno"> 794</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00795"></a><span class="lineno"> 795</span> }</div>
<div class="line"><a name="l00796"></a><span class="lineno"><a class="line" href="a02510.html#af7ab80bee872e7507f232ff270c34a8c"> 796</a></span>  </div>
<div class="line"><a name="l00797"></a><span class="lineno"> 797</span> <span class="keywordtype">bool</span> <a class="code" href="a02510.html#af7ab80bee872e7507f232ff270c34a8c">TessPDFRenderer::AddImageHandler</a>(<a class="code" href="a02438.html">TessBaseAPI</a>* api) {</div>
<div class="line"><a name="l00798"></a><span class="lineno"> 798</span>  Pix *pix = api-><a class="code" href="a02438.html#ab0cb619ceec1ca8872621399f8238d58">GetInputImage</a>();</div>
<div class="line"><a name="l00799"></a><span class="lineno"> 799</span>  <span class="keyword">const</span> <span class="keywordtype">char</span>* filename = api-><a class="code" href="a02438.html#a0a1d63bf472c0c2fd3d2b82f5aba6ebb">GetInputName</a>();</div>
<div class="line"><a name="l00800"></a><span class="lineno"> 800</span>  <span class="keywordtype">int</span> ppi = api-><a class="code" href="a02438.html#a4adb0aa43b90fad6c7c0d36b4d88ee29">GetSourceYResolution</a>();</div>
<div class="line"><a name="l00801"></a><span class="lineno"> 801</span>  <span class="keywordflow">if</span> (!pix || ppi <= 0)</div>
<div class="line"><a name="l00802"></a><span class="lineno"> 802</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00803"></a><span class="lineno"> 803</span>  <span class="keywordtype">double</span> width = pixGetWidth(pix) * 72.0 / ppi;</div>
<div class="line"><a name="l00804"></a><span class="lineno"> 804</span>  <span class="keywordtype">double</span> height = pixGetHeight(pix) * 72.0 / ppi;</div>
<div class="line"><a name="l00805"></a><span class="lineno"> 805</span>  </div>
<div class="line"><a name="l00806"></a><span class="lineno"> 806</span>  std::stringstream xobject;</div>
<div class="line"><a name="l00807"></a><span class="lineno"> 807</span>  <span class="comment">// Use "C" locale (needed for int values larger than 999).</span></div>
<div class="line"><a name="l00808"></a><span class="lineno"> 808</span>  xobject.imbue(std::locale::classic());</div>
<div class="line"><a name="l00809"></a><span class="lineno"> 809</span>  <span class="keywordflow">if</span> (!textonly_) {</div>
<div class="line"><a name="l00810"></a><span class="lineno"> 810</span>  xobject << <span class="stringliteral">"/XObject << /Im1 "</span> << (obj_ + 2) << <span class="stringliteral">" 0 R >>\n"</span>;</div>
<div class="line"><a name="l00811"></a><span class="lineno"> 811</span>  }</div>
<div class="line"><a name="l00812"></a><span class="lineno"> 812</span>  </div>
<div class="line"><a name="l00813"></a><span class="lineno"> 813</span>  <span class="comment">// PAGE</span></div>
<div class="line"><a name="l00814"></a><span class="lineno"> 814</span>  std::stringstream stream;</div>
<div class="line"><a name="l00815"></a><span class="lineno"> 815</span>  <span class="comment">// Use "C" locale (needed for double values width and height).</span></div>
<div class="line"><a name="l00816"></a><span class="lineno"> 816</span>  stream.imbue(std::locale::classic());</div>
<div class="line"><a name="l00817"></a><span class="lineno"> 817</span>  stream.precision(2);</div>
<div class="line"><a name="l00818"></a><span class="lineno"> 818</span>  stream << std::fixed <<</div>
<div class="line"><a name="l00819"></a><span class="lineno"> 819</span>  obj_ << <span class="stringliteral">" 0 obj\n"</span></div>
<div class="line"><a name="l00820"></a><span class="lineno"> 820</span>  <span class="stringliteral">"<<\n"</span></div>
<div class="line"><a name="l00821"></a><span class="lineno"> 821</span>  <span class="stringliteral">" /Type /Page\n"</span></div>
<div class="line"><a name="l00822"></a><span class="lineno"> 822</span>  <span class="stringliteral">" /Parent 2 0 R\n"</span> <span class="comment">// Pages object</span></div>
<div class="line"><a name="l00823"></a><span class="lineno"> 823</span>  <span class="stringliteral">" /MediaBox [0 0 "</span> << width << <span class="stringliteral">" "</span> << height << <span class="stringliteral">"]\n"</span></div>
<div class="line"><a name="l00824"></a><span class="lineno"> 824</span>  <span class="stringliteral">" /Contents "</span> << (obj_ + 1) << <span class="stringliteral">" 0 R\n"</span> <span class="comment">// Contents object</span></div>
<div class="line"><a name="l00825"></a><span class="lineno"> 825</span>  <span class="stringliteral">" /Resources\n"</span></div>
<div class="line"><a name="l00826"></a><span class="lineno"> 826</span>  <span class="stringliteral">" <<\n"</span></div>
<div class="line"><a name="l00827"></a><span class="lineno"> 827</span>  <span class="stringliteral">" "</span> << xobject.str() << <span class="comment">// Image object</span></div>
<div class="line"><a name="l00828"></a><span class="lineno"> 828</span>  <span class="stringliteral">" /ProcSet [ /PDF /Text /ImageB /ImageI /ImageC ]\n"</span></div>
<div class="line"><a name="l00829"></a><span class="lineno"> 829</span>  <span class="stringliteral">" /Font << /f-0-0 3 0 R >>\n"</span> <span class="comment">// Type0 Font</span></div>
<div class="line"><a name="l00830"></a><span class="lineno"> 830</span>  <span class="stringliteral">" >>\n"</span></div>
<div class="line"><a name="l00831"></a><span class="lineno"> 831</span>  <span class="stringliteral">">>\n"</span></div>
<div class="line"><a name="l00832"></a><span class="lineno"> 832</span>  <span class="stringliteral">"endobj\n"</span>;</div>
<div class="line"><a name="l00833"></a><span class="lineno"> 833</span>  pages_.<a class="code" href="a02434.html#a0dc89fe2a365b04a61017f9d78c1a303">push_back</a>(obj_);</div>
<div class="line"><a name="l00834"></a><span class="lineno"> 834</span>  AppendPDFObject(stream.str().c_str());</div>
<div class="line"><a name="l00835"></a><span class="lineno"> 835</span>  </div>
<div class="line"><a name="l00836"></a><span class="lineno"> 836</span>  <span class="comment">// CONTENTS</span></div>
<div class="line"><a name="l00837"></a><span class="lineno"> 837</span>  <span class="keyword">const</span> std::unique_ptr<char[]> pdftext(GetPDFTextObjects(api, width, height));</div>
<div class="line"><a name="l00838"></a><span class="lineno"> 838</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> pdftext_len = strlen(pdftext.get());</div>
<div class="line"><a name="l00839"></a><span class="lineno"> 839</span>  <span class="keywordtype">size_t</span> len;</div>
<div class="line"><a name="l00840"></a><span class="lineno"> 840</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *comp_pdftext = zlibCompress(</div>
<div class="line"><a name="l00841"></a><span class="lineno"> 841</span>  reinterpret_cast<unsigned char *>(pdftext.get()), pdftext_len, &len);</div>
<div class="line"><a name="l00842"></a><span class="lineno"> 842</span>  <span class="keywordtype">long</span> comp_pdftext_len = len;</div>
<div class="line"><a name="l00843"></a><span class="lineno"> 843</span>  stream.str(<span class="stringliteral">""</span>);</div>
<div class="line"><a name="l00844"></a><span class="lineno"> 844</span>  stream <<</div>
<div class="line"><a name="l00845"></a><span class="lineno"> 845</span>  obj_ << <span class="stringliteral">" 0 obj\n"</span></div>
<div class="line"><a name="l00846"></a><span class="lineno"> 846</span>  <span class="stringliteral">"<<\n"</span></div>
<div class="line"><a name="l00847"></a><span class="lineno"> 847</span>  <span class="stringliteral">" /Length "</span> << comp_pdftext_len << <span class="stringliteral">" /Filter /FlateDecode\n"</span></div>
<div class="line"><a name="l00848"></a><span class="lineno"> 848</span>  <span class="stringliteral">">>\n"</span></div>
<div class="line"><a name="l00849"></a><span class="lineno"> 849</span>  <span class="stringliteral">"stream\n"</span>;</div>
<div class="line"><a name="l00850"></a><span class="lineno"> 850</span>  <a class="code" href="a02490.html#a9d903a379bfc1467618b8ee616ba64b6">AppendString</a>(stream.str().c_str());</div>
<div class="line"><a name="l00851"></a><span class="lineno"> 851</span>  <span class="keywordtype">long</span> objsize = stream.str().size();</div>
<div class="line"><a name="l00852"></a><span class="lineno"> 852</span>  <a class="code" href="a02490.html#adfd158aaf385d1410d65ec01d1a62145">AppendData</a>(reinterpret_cast<char *>(comp_pdftext), comp_pdftext_len);</div>
<div class="line"><a name="l00853"></a><span class="lineno"> 853</span>  objsize += comp_pdftext_len;</div>
<div class="line"><a name="l00854"></a><span class="lineno"> 854</span>  lept_free(comp_pdftext);</div>
<div class="line"><a name="l00855"></a><span class="lineno"> 855</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> *b2 =</div>
<div class="line"><a name="l00856"></a><span class="lineno"> 856</span>  <span class="stringliteral">"endstream\n"</span></div>
<div class="line"><a name="l00857"></a><span class="lineno"> 857</span>  <span class="stringliteral">"endobj\n"</span>;</div>
<div class="line"><a name="l00858"></a><span class="lineno"> 858</span>  <a class="code" href="a02490.html#a9d903a379bfc1467618b8ee616ba64b6">AppendString</a>(b2);</div>
<div class="line"><a name="l00859"></a><span class="lineno"> 859</span>  objsize += strlen(b2);</div>
<div class="line"><a name="l00860"></a><span class="lineno"> 860</span>  AppendPDFObjectDIY(objsize);</div>
<div class="line"><a name="l00861"></a><span class="lineno"> 861</span>  </div>
<div class="line"><a name="l00862"></a><span class="lineno"> 862</span>  <span class="keywordflow">if</span> (!textonly_) {</div>
<div class="line"><a name="l00863"></a><span class="lineno"> 863</span>  <span class="keywordtype">char</span> *pdf_object = <span class="keyword">nullptr</span>;</div>
<div class="line"><a name="l00864"></a><span class="lineno"> 864</span>  <span class="keywordtype">int</span> jpg_quality;</div>
<div class="line"><a name="l00865"></a><span class="lineno"> 865</span>  api-><a class="code" href="a02438.html#a25d71dd25faea83cc91db902f2997297">GetIntVariable</a>(<span class="stringliteral">"jpg_quality"</span>, &jpg_quality);</div>
<div class="line"><a name="l00866"></a><span class="lineno"> 866</span>  <span class="keywordflow">if</span> (!imageToPDFObj(pix, filename, obj_, &pdf_object, &objsize,</div>
<div class="line"><a name="l00867"></a><span class="lineno"> 867</span>  jpg_quality)) {</div>
<div class="line"><a name="l00868"></a><span class="lineno"> 868</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00869"></a><span class="lineno"> 869</span>  }</div>
<div class="line"><a name="l00870"></a><span class="lineno"> 870</span>  <a class="code" href="a02490.html#adfd158aaf385d1410d65ec01d1a62145">AppendData</a>(pdf_object, objsize);</div>
<div class="line"><a name="l00871"></a><span class="lineno"> 871</span>  AppendPDFObjectDIY(objsize);</div>
<div class="line"><a name="l00872"></a><span class="lineno"> 872</span>  <span class="keyword">delete</span>[] pdf_object;</div>
<div class="line"><a name="l00873"></a><span class="lineno"> 873</span>  }</div>
<div class="line"><a name="l00874"></a><span class="lineno"> 874</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00875"></a><span class="lineno"> 875</span> }</div>
<div class="line"><a name="l00876"></a><span class="lineno"> 876</span>  </div>
<div class="line"><a name="l00877"></a><span class="lineno"><a class="line" href="a02510.html#a408d9db25315a89d17eb69d220d59d6b"> 877</a></span>  </div>
<div class="line"><a name="l00878"></a><span class="lineno"> 878</span> <span class="keywordtype">bool</span> <a class="code" href="a02510.html#a408d9db25315a89d17eb69d220d59d6b">TessPDFRenderer::EndDocumentHandler</a>() {</div>
<div class="line"><a name="l00879"></a><span class="lineno"> 879</span>  <span class="comment">// We reserved the /Pages object number early, so that the /Page</span></div>
<div class="line"><a name="l00880"></a><span class="lineno"> 880</span>  <span class="comment">// objects could refer to their parent. We finally have enough</span></div>
<div class="line"><a name="l00881"></a><span class="lineno"> 881</span>  <span class="comment">// information to go fill it in. Using lower level calls to manipulate</span></div>
<div class="line"><a name="l00882"></a><span class="lineno"> 882</span>  <span class="comment">// the offset record in two spots, because we are placing objects</span></div>
<div class="line"><a name="l00883"></a><span class="lineno"> 883</span>  <span class="comment">// out of order in the file.</span></div>
<div class="line"><a name="l00884"></a><span class="lineno"> 884</span>  </div>
<div class="line"><a name="l00885"></a><span class="lineno"> 885</span>  <span class="comment">// PAGES</span></div>
<div class="line"><a name="l00886"></a><span class="lineno"> 886</span>  <span class="keyword">const</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> kPagesObjectNumber = 2;</div>
<div class="line"><a name="l00887"></a><span class="lineno"> 887</span>  offsets_[kPagesObjectNumber] = offsets_.<a class="code" href="a02434.html#a48b82547ebbaa5fedecfdebe7e2f155a">back</a>(); <span class="comment">// manipulation #1</span></div>
<div class="line"><a name="l00888"></a><span class="lineno"> 888</span>  std::stringstream stream;</div>
<div class="line"><a name="l00889"></a><span class="lineno"> 889</span>  <span class="comment">// Use "C" locale (needed for int values larger than 999).</span></div>
<div class="line"><a name="l00890"></a><span class="lineno"> 890</span>  stream.imbue(std::locale::classic());</div>
<div class="line"><a name="l00891"></a><span class="lineno"> 891</span>  stream << kPagesObjectNumber << <span class="stringliteral">" 0 obj\n<<\n /Type /Pages\n /Kids [ "</span>;</div>
<div class="line"><a name="l00892"></a><span class="lineno"> 892</span>  <a class="code" href="a02490.html#a9d903a379bfc1467618b8ee616ba64b6">AppendString</a>(stream.str().c_str());</div>
<div class="line"><a name="l00893"></a><span class="lineno"> 893</span>  <span class="keywordtype">size_t</span> pages_objsize = stream.str().size();</div>
<div class="line"><a name="l00894"></a><span class="lineno"> 894</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < pages_.<a class="code" href="a02434.html#a47bd2385b28d536e8b6e87b689d61ede">unsigned_size</a>(); i++) {</div>
<div class="line"><a name="l00895"></a><span class="lineno"> 895</span>  stream.str(<span class="stringliteral">""</span>);</div>
<div class="line"><a name="l00896"></a><span class="lineno"> 896</span>  stream << pages_[i] << <span class="stringliteral">" 0 R "</span>;</div>
<div class="line"><a name="l00897"></a><span class="lineno"> 897</span>  <a class="code" href="a02490.html#a9d903a379bfc1467618b8ee616ba64b6">AppendString</a>(stream.str().c_str());</div>
<div class="line"><a name="l00898"></a><span class="lineno"> 898</span>  pages_objsize += stream.str().size();</div>
<div class="line"><a name="l00899"></a><span class="lineno"> 899</span>  }</div>
<div class="line"><a name="l00900"></a><span class="lineno"> 900</span>  stream.str(<span class="stringliteral">""</span>);</div>
<div class="line"><a name="l00901"></a><span class="lineno"> 901</span>  stream << <span class="stringliteral">"]\n /Count "</span> << pages_.<a class="code" href="a02434.html#a20cfad5c58c50cb85a9529d8ddbd96af">size</a>() << <span class="stringliteral">"\n>>\nendobj\n"</span>;</div>
<div class="line"><a name="l00902"></a><span class="lineno"> 902</span>  <a class="code" href="a02490.html#a9d903a379bfc1467618b8ee616ba64b6">AppendString</a>(stream.str().c_str());</div>
<div class="line"><a name="l00903"></a><span class="lineno"> 903</span>  pages_objsize += stream.str().size();</div>
<div class="line"><a name="l00904"></a><span class="lineno"> 904</span>  offsets_.<a class="code" href="a02434.html#a48b82547ebbaa5fedecfdebe7e2f155a">back</a>() += pages_objsize; <span class="comment">// manipulation #2</span></div>
<div class="line"><a name="l00905"></a><span class="lineno"> 905</span>  </div>
<div class="line"><a name="l00906"></a><span class="lineno"> 906</span>  <span class="comment">// INFO</span></div>
<div class="line"><a name="l00907"></a><span class="lineno"> 907</span>  <a class="code" href="a02542.html">STRING</a> utf16_title = <span class="stringliteral">"FEFF"</span>; <span class="comment">// byte_order_marker</span></div>
<div class="line"><a name="l00908"></a><span class="lineno"> 908</span>  std::vector<char32> unicodes = <a class="code" href="a02554.html#aaf9abe60ed0d8b36b5efb00119637485">UNICHAR::UTF8ToUTF32</a>(<a class="code" href="a02490.html#a8f231200d397cd24e2d9642f4306a9f0">title</a>());</div>
<div class="line"><a name="l00909"></a><span class="lineno"> 909</span>  <span class="keywordtype">char</span> utf16[kMaxBytesPerCodepoint];</div>
<div class="line"><a name="l00910"></a><span class="lineno"> 910</span>  <span class="keywordflow">for</span> (<a class="code" href="a01818.html#a445c8390d18d4299d6a46de3a0d2fb63">char32</a> code : unicodes) {</div>