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&#160;<span id="projectnumber">0.9.0</span>
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<div id="projectbrief">C++ functional terminal UI.</div>
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<a href="terminal_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="preprocessor">#include &lt;cstdlib&gt;</span> <span class="comment">// for getenv</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="preprocessor">#include &lt;string&gt;</span> <span class="comment">// for string, allocator</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span> </div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="preprocessor">#include &quot;<a class="code" href="terminal_8hpp.html">ftxui/screen/terminal.hpp</a>&quot;</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span> </div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="preprocessor">#if defined(_WIN32)</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="preprocessor">#define WIN32_LEAN_AND_MEAN</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span> </div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="preprocessor">#ifndef NOMINMAX</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="preprocessor">#define NOMINMAX</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span> </div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="preprocessor">#include &lt;Windows.h&gt;</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="preprocessor">#else</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="preprocessor">#include &lt;sys/ioctl.h&gt;</span> <span class="comment">// for winsize, ioctl, TIOCGWINSZ</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="preprocessor">#include &lt;unistd.h&gt;</span> <span class="comment">// for STDOUT_FILENO</span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span> </div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceftxui.html">ftxui</a> {</div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span> </div>
<div class="foldopen" id="foldopen00021" data-start="{" data-end="}">
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"><a class="line" href="namespaceftxui_1_1Terminal.html#ad890c37601448c82ed0d5051c29e2f0c"> 21</a></span><a class="code hl_struct" href="namespaceftxui.html#structftxui_1_1Dimensions">Dimensions</a> <a class="code hl_function" href="namespaceftxui_1_1Terminal.html#ad890c37601448c82ed0d5051c29e2f0c">Terminal::Size</a>() {</div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="preprocessor">#if defined(__EMSCRIPTEN__)</span></div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span> <span class="keywordflow">return</span> <a class="code hl_struct" href="namespaceftxui.html#structftxui_1_1Dimensions">Dimensions</a>{140, 43};</div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span><span class="preprocessor">#elif defined(_WIN32)</span></div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span> CONSOLE_SCREEN_BUFFER_INFO csbi;</div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span> </div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span> <span class="keywordflow">if</span> (GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &amp;csbi)) {</div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span> <span class="keywordflow">return</span> <a class="code hl_struct" href="namespaceftxui.html#structftxui_1_1Dimensions">Dimensions</a>{csbi.srWindow.Right - csbi.srWindow.Left + 1,</div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span> csbi.srWindow.Bottom - csbi.srWindow.Top + 1};</div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span> }</div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span> </div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> <span class="comment">// The Microsoft default &quot;cmd&quot; returns errors above.</span></div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> <span class="keywordflow">return</span> <a class="code hl_struct" href="namespaceftxui.html#structftxui_1_1Dimensions">Dimensions</a>{80, 80};</div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> </div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span><span class="preprocessor">#else</span></div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> winsize w;</div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> ioctl(STDOUT_FILENO, TIOCGWINSZ, &amp;w);</div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> <span class="keywordflow">return</span> <a class="code hl_struct" href="namespaceftxui.html#structftxui_1_1Dimensions">Dimensions</a>{w.ws_col, w.ws_row};</div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span>}</div>
</div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> </div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span><span class="keyword">namespace </span>{</div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> </div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span><span class="keyword">const</span> <span class="keywordtype">char</span>* Safe(<span class="keyword">const</span> <span class="keywordtype">char</span>* c) {</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> <span class="keywordflow">return</span> c ? c : <span class="stringliteral">&quot;&quot;</span>;</div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span>}</div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> </div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span><span class="keywordtype">bool</span> Contains(<span class="keyword">const</span> std::string&amp; s, <span class="keyword">const</span> <span class="keywordtype">char</span>* key) {</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> <span class="keywordflow">return</span> s.find(key) != std::string::npos;</div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span>}</div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> </div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span><span class="keyword">static</span> <span class="keywordtype">bool</span> cached = <span class="keyword">false</span>;</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span><a class="code hl_enumeration" href="namespaceftxui_1_1Terminal.html#ab87bacfdad76e61b9412d7124be44c1c">Terminal::Color</a> cached_supported_color;</div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span><a class="code hl_enumeration" href="namespaceftxui_1_1Terminal.html#ab87bacfdad76e61b9412d7124be44c1c">Terminal::Color</a> ComputeColorSupport() {</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span><span class="preprocessor">#if defined(__EMSCRIPTEN__)</span></div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> <span class="keywordflow">return</span> <a class="code hl_enumvalue" href="namespaceftxui_1_1Terminal.html#ab87bacfdad76e61b9412d7124be44c1ca7afd9568e82d523c91b2bfe0cc47be29">Terminal::Color::TrueColor</a>;</div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> </div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> std::string COLORTERM = Safe(std::getenv(<span class="stringliteral">&quot;COLORTERM&quot;</span>));</div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> <span class="keywordflow">if</span> (Contains(COLORTERM, <span class="stringliteral">&quot;24bit&quot;</span>) || Contains(COLORTERM, <span class="stringliteral">&quot;truecolor&quot;</span>))</div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> <span class="keywordflow">return</span> <a class="code hl_enumvalue" href="namespaceftxui_1_1Terminal.html#ab87bacfdad76e61b9412d7124be44c1ca7afd9568e82d523c91b2bfe0cc47be29">Terminal::Color::TrueColor</a>;</div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> </div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> std::string TERM = Safe(std::getenv(<span class="stringliteral">&quot;TERM&quot;</span>));</div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> <span class="keywordflow">if</span> (Contains(COLORTERM, <span class="stringliteral">&quot;256&quot;</span>) || Contains(TERM, <span class="stringliteral">&quot;256&quot;</span>))</div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> <span class="keywordflow">return</span> <a class="code hl_enumvalue" href="namespaceftxui_1_1Terminal.html#ab87bacfdad76e61b9412d7124be44c1ca7b88ab2a5c8fe8866c96ea4acb623876">Terminal::Color::Palette256</a>;</div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> </div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span><span class="preprocessor">#if defined(FTXUI_MICROSOFT_TERMINAL_FALLBACK)</span></div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> <span class="comment">// Microsoft terminals do not properly declare themselve supporting true</span></div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> <span class="comment">// colors: https://github.com/microsoft/terminal/issues/1040</span></div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> <span class="comment">// As a fallback, assume microsoft terminal are the ones not setting those</span></div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> <span class="comment">// variables, and enable true colors.</span></div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> <span class="keywordflow">if</span> (TERM == <span class="stringliteral">&quot;&quot;</span> &amp;&amp; COLORTERM == <span class="stringliteral">&quot;&quot;</span>)</div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> <span class="keywordflow">return</span> <a class="code hl_enumvalue" href="namespaceftxui_1_1Terminal.html#ab87bacfdad76e61b9412d7124be44c1ca7afd9568e82d523c91b2bfe0cc47be29">Terminal::Color::TrueColor</a>;</div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> </div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> <span class="keywordflow">return</span> <a class="code hl_enumvalue" href="namespaceftxui_1_1Terminal.html#ab87bacfdad76e61b9412d7124be44c1cae5a76102d821ec8233fee04273c60349">Terminal::Color::Palette16</a>;</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span>}</div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> </div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span>} <span class="comment">// namespace</span></div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> </div>
<div class="foldopen" id="foldopen00081" data-start="{" data-end="}">
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"><a class="line" href="namespaceftxui_1_1Terminal.html#a3234ad23a91535555e90dd3681848122"> 81</a></span><a class="code hl_enumeration" href="namespaceftxui_1_1Terminal.html#ab87bacfdad76e61b9412d7124be44c1c">Terminal::Color</a> <a class="code hl_function" href="namespaceftxui_1_1Terminal.html#a3234ad23a91535555e90dd3681848122">Terminal::ColorSupport</a>() {</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> <span class="keywordflow">if</span> (!cached) {</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> cached = <span class="keyword">true</span>;</div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> cached_supported_color = ComputeColorSupport();</div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> }</div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> <span class="keywordflow">return</span> cached_supported_color;</div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span>}</div>
</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> </div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span>} <span class="comment">// namespace ftxui</span></div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> </div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span><span class="comment">// Copyright 2020 Arthur Sonzogni. All rights reserved.</span></div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span><span class="comment">// Use of this source code is governed by the MIT license that can be found in</span></div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span><span class="comment">// the LICENSE file.</span></div>
<div class="ttc" id="anamespaceftxui_1_1Terminal_html_a3234ad23a91535555e90dd3681848122"><div class="ttname"><a href="namespaceftxui_1_1Terminal.html#a3234ad23a91535555e90dd3681848122">ftxui::Terminal::ColorSupport</a></div><div class="ttdeci">Color ColorSupport()</div><div class="ttdef"><b>Definition</b> <a href="#l00081">terminal.cpp:81</a></div></div>
<div class="ttc" id="anamespaceftxui_1_1Terminal_html_ab87bacfdad76e61b9412d7124be44c1c"><div class="ttname"><a href="namespaceftxui_1_1Terminal.html#ab87bacfdad76e61b9412d7124be44c1c">ftxui::Terminal::Color</a></div><div class="ttdeci">Color</div><div class="ttdef"><b>Definition</b> <a href="terminal_8hpp_source.html#l00013">terminal.hpp:13</a></div></div>
<div class="ttc" id="anamespaceftxui_1_1Terminal_html_ab87bacfdad76e61b9412d7124be44c1ca7afd9568e82d523c91b2bfe0cc47be29"><div class="ttname"><a href="namespaceftxui_1_1Terminal.html#ab87bacfdad76e61b9412d7124be44c1ca7afd9568e82d523c91b2bfe0cc47be29">ftxui::Terminal::TrueColor</a></div><div class="ttdeci">@ TrueColor</div><div class="ttdef"><b>Definition</b> <a href="terminal_8hpp_source.html#l00017">terminal.hpp:17</a></div></div>
<div class="ttc" id="anamespaceftxui_1_1Terminal_html_ab87bacfdad76e61b9412d7124be44c1ca7b88ab2a5c8fe8866c96ea4acb623876"><div class="ttname"><a href="namespaceftxui_1_1Terminal.html#ab87bacfdad76e61b9412d7124be44c1ca7b88ab2a5c8fe8866c96ea4acb623876">ftxui::Terminal::Palette256</a></div><div class="ttdeci">@ Palette256</div><div class="ttdef"><b>Definition</b> <a href="terminal_8hpp_source.html#l00016">terminal.hpp:16</a></div></div>
<div class="ttc" id="anamespaceftxui_1_1Terminal_html_ab87bacfdad76e61b9412d7124be44c1cae5a76102d821ec8233fee04273c60349"><div class="ttname"><a href="namespaceftxui_1_1Terminal.html#ab87bacfdad76e61b9412d7124be44c1cae5a76102d821ec8233fee04273c60349">ftxui::Terminal::Palette16</a></div><div class="ttdeci">@ Palette16</div><div class="ttdef"><b>Definition</b> <a href="terminal_8hpp_source.html#l00015">terminal.hpp:15</a></div></div>
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