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<div class="headertitle"><div class="title">src/ftxui/dom/focus.cpp</div></div>
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<div class="contents">
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<a href="src_2ftxui_2dom_2focus_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="comment">// Copyright 2020 Arthur Sonzogni. All rights reserved.</span></div>
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<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment">// Use of this source code is governed by the MIT license that can be found in</span></div>
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<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment">// the LICENSE file.</span></div>
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<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="preprocessor">#include <memory></span> <span class="comment">// for make_shared</span></div>
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<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="preprocessor">#include <utility></span> <span class="comment">// for move</span></div>
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<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span> </div>
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<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="preprocessor">#include "<a class="code" href="elements_8hpp.html">ftxui/dom/elements.hpp</a>"</span> <span class="comment">// for Decorator, Element, focusPosition, focusPositionRelative</span></div>
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<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="preprocessor">#include "<a class="code" href="node__decorator_8hpp.html">ftxui/dom/node_decorator.hpp</a>"</span> <span class="comment">// for NodeDecorator</span></div>
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<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="preprocessor">#include "<a class="code" href="requirement_8hpp.html">ftxui/dom/requirement.hpp</a>"</span> <span class="comment">// for Requirement, Requirement::NORMAL, Requirement::Selection</span></div>
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<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="preprocessor">#include "<a class="code" href="box_8hpp.html">ftxui/screen/box.hpp</a>"</span> <span class="comment">// for Box</span></div>
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<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span> </div>
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<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceftxui.html">ftxui</a> {</div>
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<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="comment"></span> </div>
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<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="comment">/// @brief Used inside a `frame`, this force the view to be scrolled toward a</span></div>
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<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="comment">/// a given position. The position is expressed in proportion of the requested</span></div>
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<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="comment">/// size.</span></div>
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<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="comment">///</span></div>
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<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="comment">/// For instance:</span></div>
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<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="comment">/// - (0, 0) means that the view is scrolled toward the upper left.</span></div>
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<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="comment">/// - (1, 0) means that the view is scrolled toward the upper right.</span></div>
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<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="comment">/// - (0, 1) means that the view is scrolled toward the bottom left.</span></div>
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<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="comment">/// @ingroup dom</span></div>
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<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="comment">///</span></div>
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<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span><span class="comment">/// ### Example</span></div>
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<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span><span class="comment">///</span></div>
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<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="comment">/// ```cpp</span></div>
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<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span><span class="comment">/// Element document = huge_document()</span></div>
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<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="comment">/// | focusPositionRelative(0.f, 1.f)</span></div>
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<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span><span class="comment">/// | frame;</span></div>
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<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span><span class="comment">/// ```</span></div>
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<div class="foldopen" id="foldopen00031" data-start="{" data-end="}">
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<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"><a class="line" href="group__dom.html#ga13befad33cb4125e2143f2af3eddcc71"> 31</a></span><span class="comment"></span><a class="code hl_typedef" href="namespaceftxui.html#a164021903e9ac6f1357e4186582891e3">Decorator</a> <a class="code hl_function" href="group__dom.html#ga13befad33cb4125e2143f2af3eddcc71">focusPositionRelative</a>(<span class="keywordtype">float</span> x, <span class="keywordtype">float</span> y) {</div>
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<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> <span class="keyword">class </span>Impl : <span class="keyword">public</span> <a class="code hl_class" href="classftxui_1_1NodeDecorator.html">NodeDecorator</a> {</div>
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<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> <span class="keyword">public</span>:</div>
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<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> Impl(<a class="code hl_typedef" href="namespaceftxui.html#a2bc31f2d685189e5c61d2293a1f51b4f">Element</a> child, <span class="keywordtype">float</span> x, <span class="keywordtype">float</span> y)</div>
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<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> : <a class="code hl_class" href="classftxui_1_1NodeDecorator.html">NodeDecorator</a>(std::move(child)), x_(x), y_(y) {}</div>
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<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> </div>
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<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> <span class="keywordtype">void</span> ComputeRequirement()<span class="keyword"> override </span>{</div>
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<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> NodeDecorator::ComputeRequirement();</div>
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<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> requirement_.focused.enabled = <span class="keyword">true</span>;</div>
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<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> requirement_.focused.node = <span class="keyword">this</span>;</div>
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<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> requirement_.focused.box.x_min = int(<span class="keywordtype">float</span>(requirement_.min_x) * x_);</div>
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<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> requirement_.focused.box.y_min = int(<span class="keywordtype">float</span>(requirement_.min_y) * y_);</div>
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<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> requirement_.focused.box.x_max = int(<span class="keywordtype">float</span>(requirement_.min_x) * x_);</div>
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<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> requirement_.focused.box.y_max = int(<span class="keywordtype">float</span>(requirement_.min_y) * y_);</div>
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<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> }</div>
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<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> </div>
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<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> <span class="keyword">private</span>:</div>
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<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> <span class="keyword">const</span> <span class="keywordtype">float</span> x_;</div>
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<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> <span class="keyword">const</span> <span class="keywordtype">float</span> y_;</div>
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<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> };</div>
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<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> </div>
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<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> <span class="keywordflow">return</span> [x, y](<a class="code hl_typedef" href="namespaceftxui.html#a2bc31f2d685189e5c61d2293a1f51b4f">Element</a> child) {</div>
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<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> <span class="keywordflow">return</span> std::make_shared<Impl>(std::move(child), x, y);</div>
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<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> };</div>
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<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span>}</div>
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</div>
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<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span><span class="comment"></span> </div>
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<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span><span class="comment">/// @brief Used inside a `frame`, this force the view to be scrolled toward a</span></div>
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<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span><span class="comment">/// a given position. The position is expressed in the numbers of cells.</span></div>
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<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span><span class="comment">///</span></div>
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<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span><span class="comment">/// @ingroup dom</span></div>
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<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span><span class="comment">///</span></div>
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<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span><span class="comment">/// ### Example</span></div>
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<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span><span class="comment">///</span></div>
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<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span><span class="comment">/// ```cpp</span></div>
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<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span><span class="comment">/// Element document = huge_document()</span></div>
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<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span><span class="comment">/// | focusPosition(10, 10)</span></div>
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<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span><span class="comment">/// | frame;</span></div>
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<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span><span class="comment">/// ```</span></div>
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<div class="foldopen" id="foldopen00069" data-start="{" data-end="}">
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<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"><a class="line" href="group__dom.html#ga78447ba1ccb792963ad6d306f4ed1256"> 69</a></span><span class="comment"></span><a class="code hl_typedef" href="namespaceftxui.html#a164021903e9ac6f1357e4186582891e3">Decorator</a> <a class="code hl_function" href="group__dom.html#ga78447ba1ccb792963ad6d306f4ed1256">focusPosition</a>(<span class="keywordtype">int</span> x, <span class="keywordtype">int</span> y) {</div>
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<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> <span class="keyword">class </span>Impl : <span class="keyword">public</span> <a class="code hl_class" href="classftxui_1_1NodeDecorator.html">NodeDecorator</a> {</div>
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<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> <span class="keyword">public</span>:</div>
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<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> Impl(<a class="code hl_typedef" href="namespaceftxui.html#a2bc31f2d685189e5c61d2293a1f51b4f">Element</a> child, <span class="keywordtype">int</span> x, <span class="keywordtype">int</span> y)</div>
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<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> : <a class="code hl_class" href="classftxui_1_1NodeDecorator.html">NodeDecorator</a>(std::move(child)), x_(x), y_(y) {}</div>
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<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> </div>
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<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> <span class="keywordtype">void</span> ComputeRequirement()<span class="keyword"> override </span>{</div>
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<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> NodeDecorator::ComputeRequirement();</div>
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<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> requirement_.focused.enabled = <span class="keyword">false</span>;</div>
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<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> </div>
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<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> <a class="code hl_struct" href="group__screen.html#structftxui_1_1Box">Box</a>& box = requirement_.focused.box;</div>
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<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> box.<a class="code hl_variable" href="group__screen.html#ae0951dcafafdc96ac1d8361c672d47e2">x_min</a> = x_;</div>
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<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> box.<a class="code hl_variable" href="group__screen.html#a7941ddc7e35fffb8864af1e922814401">y_min</a> = y_;</div>
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<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> box.<a class="code hl_variable" href="group__screen.html#a5f0bb6d8a3e66525c3e6264cb8288e43">x_max</a> = x_;</div>
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<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> box.<a class="code hl_variable" href="group__screen.html#ad033aea530fbbcf5bcd6cd98d882e3a5">y_max</a> = y_;</div>
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<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> }</div>
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<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> </div>
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<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> <span class="keyword">private</span>:</div>
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<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> <span class="keyword">const</span> <span class="keywordtype">int</span> x_;</div>
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<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> <span class="keyword">const</span> <span class="keywordtype">int</span> y_;</div>
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<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> };</div>
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<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> </div>
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<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> <span class="keywordflow">return</span> [x, y](<a class="code hl_typedef" href="namespaceftxui.html#a2bc31f2d685189e5c61d2293a1f51b4f">Element</a> child) {</div>
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<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> <span class="keywordflow">return</span> std::make_shared<Impl>(std::move(child), x, y);</div>
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<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> };</div>
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<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span>}</div>
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</div>
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<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> </div>
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<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span>} <span class="comment">// namespace ftxui</span></div>
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<div class="ttc" id="abox_8hpp_html"><div class="ttname"><a href="box_8hpp.html">box.hpp</a></div></div>
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<div class="ttc" id="aclassftxui_1_1NodeDecorator_html"><div class="ttname"><a href="classftxui_1_1NodeDecorator.html">ftxui::NodeDecorator</a></div><div class="ttdef"><b>Definition</b> <a href="node__decorator_8hpp_source.html#l00016">node_decorator.hpp:16</a></div></div>
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<div class="ttc" id="aelements_8hpp_html"><div class="ttname"><a href="elements_8hpp.html">elements.hpp</a></div></div>
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<div class="ttc" id="agroup__dom_html_ga13befad33cb4125e2143f2af3eddcc71"><div class="ttname"><a href="group__dom.html#ga13befad33cb4125e2143f2af3eddcc71">ftxui::focusPositionRelative</a></div><div class="ttdeci">Decorator focusPositionRelative(float x, float y)</div><div class="ttdoc">Used inside a frame, this force the view to be scrolled toward a a given position....</div><div class="ttdef"><b>Definition</b> <a href="#l00031">src/ftxui/dom/focus.cpp:31</a></div></div>
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<div class="ttc" id="agroup__dom_html_ga78447ba1ccb792963ad6d306f4ed1256"><div class="ttname"><a href="group__dom.html#ga78447ba1ccb792963ad6d306f4ed1256">ftxui::focusPosition</a></div><div class="ttdeci">Decorator focusPosition(int x, int y)</div><div class="ttdoc">Used inside a frame, this force the view to be scrolled toward a a given position....</div><div class="ttdef"><b>Definition</b> <a href="#l00069">src/ftxui/dom/focus.cpp:69</a></div></div>
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<div class="ttc" id="agroup__screen_html_a5f0bb6d8a3e66525c3e6264cb8288e43"><div class="ttname"><a href="group__screen.html#a5f0bb6d8a3e66525c3e6264cb8288e43">ftxui::Box::x_max</a></div><div class="ttdeci">int x_max</div><div class="ttdef"><b>Definition</b> <a href="box_8hpp_source.html#l00018">box.hpp:18</a></div></div>
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<div class="ttc" id="agroup__screen_html_a7941ddc7e35fffb8864af1e922814401"><div class="ttname"><a href="group__screen.html#a7941ddc7e35fffb8864af1e922814401">ftxui::Box::y_min</a></div><div class="ttdeci">int y_min</div><div class="ttdef"><b>Definition</b> <a href="box_8hpp_source.html#l00019">box.hpp:19</a></div></div>
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<div class="ttc" id="agroup__screen_html_ad033aea530fbbcf5bcd6cd98d882e3a5"><div class="ttname"><a href="group__screen.html#ad033aea530fbbcf5bcd6cd98d882e3a5">ftxui::Box::y_max</a></div><div class="ttdeci">int y_max</div><div class="ttdef"><b>Definition</b> <a href="box_8hpp_source.html#l00020">box.hpp:20</a></div></div>
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<div class="ttc" id="agroup__screen_html_ae0951dcafafdc96ac1d8361c672d47e2"><div class="ttname"><a href="group__screen.html#ae0951dcafafdc96ac1d8361c672d47e2">ftxui::Box::x_min</a></div><div class="ttdeci">int x_min</div><div class="ttdef"><b>Definition</b> <a href="box_8hpp_source.html#l00017">box.hpp:17</a></div></div>
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<div class="ttc" id="agroup__screen_html_structftxui_1_1Box"><div class="ttname"><a href="group__screen.html#structftxui_1_1Box">ftxui::Box</a></div><div class="ttdoc">Box is a structure that represents a rectangular area in a 2D space.</div><div class="ttdef"><b>Definition</b> <a href="box_8hpp_source.html#l00016">box.hpp:16</a></div></div>
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<div class="ttc" id="anamespaceftxui_html"><div class="ttname"><a href="namespaceftxui.html">ftxui</a></div><div class="ttdoc">The FTXUI ftxui:: namespace.</div><div class="ttdef"><b>Definition</b> <a href="animation_8hpp_source.html#l00010">animation.hpp:10</a></div></div>
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<div class="ttc" id="anamespaceftxui_html_a164021903e9ac6f1357e4186582891e3"><div class="ttname"><a href="namespaceftxui.html#a164021903e9ac6f1357e4186582891e3">ftxui::Decorator</a></div><div class="ttdeci">std::function< Element(Element)> Decorator</div><div class="ttdef"><b>Definition</b> <a href="elements_8hpp_source.html#l00024">elements.hpp:24</a></div></div>
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<div class="ttc" id="anamespaceftxui_html_a2bc31f2d685189e5c61d2293a1f51b4f"><div class="ttname"><a href="namespaceftxui.html#a2bc31f2d685189e5c61d2293a1f51b4f">ftxui::Element</a></div><div class="ttdeci">std::shared_ptr< Node > Element</div><div class="ttdef"><b>Definition</b> <a href="elements_8hpp_source.html#l00022">elements.hpp:22</a></div></div>
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<div class="ttc" id="anode__decorator_8hpp_html"><div class="ttname"><a href="node__decorator_8hpp.html">node_decorator.hpp</a></div></div>
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