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<div id="projectbrief">C++ functional terminal UI.</div>
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<a href="vbox_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 <algorithm></span> <span class="comment">// for max</span></div>
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<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="preprocessor">#include <cstddef></span> <span class="comment">// for size_t</span></div>
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<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="preprocessor">#include <memory></span> <span class="comment">// for __shared_ptr_access, shared_ptr, make_shared, allocator_traits<>::value_type</span></div>
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<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="preprocessor">#include <utility></span> <span class="comment">// for move</span></div>
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<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="preprocessor">#include <vector></span> <span class="comment">// for vector, __alloc_traits<>::value_type</span></div>
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<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</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__helper_8hpp.html">ftxui/dom/box_helper.hpp</a>"</span> <span class="comment">// for Element, Compute</span></div>
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<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="preprocessor">#include "<a class="code" href="elements_8hpp.html">ftxui/dom/elements.hpp</a>"</span> <span class="comment">// for Element, Elements, vbox</span></div>
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<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="preprocessor">#include "<a class="code" href="node_8hpp.html">ftxui/dom/node.hpp</a>"</span> <span class="comment">// for Node, Elements</span></div>
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<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="preprocessor">#include "<a class="code" href="requirement_8hpp.html">ftxui/dom/requirement.hpp</a>"</span> <span class="comment">// for Requirement</span></div>
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<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="preprocessor">#include "<a class="code" href="selection_8hpp.html">ftxui/dom/selection.hpp</a>"</span> <span class="comment">// for Selection</span></div>
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<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</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="l00016" name="l00016"></a><span class="lineno"> 16</span> </div>
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<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</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="l00018" name="l00018"></a><span class="lineno"> 18</span> </div>
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<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="keyword">namespace </span>{</div>
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<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="keyword">class </span>VBox : <span class="keyword">public</span> Node {</div>
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<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span> <span class="keyword">public</span>:</div>
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<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span> <span class="keyword">explicit</span> VBox(<a class="code hl_typedef" href="namespaceftxui.html#a5d4aa06ca6cc6a72e981bd5386f93f0a">Elements</a> children) : Node(std::move(children)) {}</div>
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<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span> </div>
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<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span> <span class="keyword">private</span>:</div>
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<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span> <span class="keywordtype">void</span> ComputeRequirement()<span class="keyword"> override </span>{</div>
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<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span> requirement_ = Requirement{};</div>
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<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span> </div>
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<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span> <span class="keywordflow">for</span> (<span class="keyword">auto</span>& child : children_) {</div>
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<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span> child->ComputeRequirement();</div>
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<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span> </div>
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<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span> <span class="comment">// Propagate the focused requirement.</span></div>
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<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> <span class="keywordflow">if</span> (requirement_.focused.Prefer(child->requirement().focused)) {</div>
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<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> requirement_.focused = child->requirement().focused;</div>
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<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> requirement_.focused.box.Shift(0, requirement_.min_y);</div>
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<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> }</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="comment">// Extend the min_x and min_y to contain all the children</span></div>
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<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> requirement_.min_y += child->requirement().min_y;</div>
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<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> requirement_.min_x =</div>
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<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> std::max(requirement_.min_x, child->requirement().min_x);</div>
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<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> }</div>
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<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> }</div>
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<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> </div>
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<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> <span class="keywordtype">void</span> SetBox(Box box)<span class="keyword"> override </span>{</div>
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<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> <a class="code hl_function" href="group__dom.html#a2ed318aaadb07efc50e76fce1ccf9637">Node::SetBox</a>(box);</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> std::vector<box_helper::Element> elements(children_.size());</div>
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<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < children_.size(); ++i) {</div>
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<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> <span class="keyword">auto</span>& element = elements[i];</div>
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<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> <span class="keyword">const</span> <span class="keyword">auto</span>& requirement = children_[i]->requirement();</div>
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<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> element.min_size = requirement.min_y;</div>
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<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> element.flex_grow = requirement.flex_grow_y;</div>
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<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> element.flex_shrink = requirement.flex_shrink_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> <span class="keyword">const</span> <span class="keywordtype">int</span> target_size = box.y_max - box.y_min + 1;</div>
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<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> <a class="code hl_function" href="namespaceftxui_1_1box__helper.html#aede4ed6e71fbe0689a500ff8db06f3a3">box_helper::Compute</a>(&elements, target_size);</div>
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<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> </div>
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<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> <span class="keywordtype">int</span> y = box.y_min;</div>
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<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < children_.size(); ++i) {</div>
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<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> box.y_min = y;</div>
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<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> box.y_max = y + elements[i].size - 1;</div>
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<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> children_[i]->SetBox(box);</div>
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<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> y = box.y_max + 1;</div>
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<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> }</div>
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<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> }</div>
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<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> </div>
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<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> <span class="keywordtype">void</span> Select(Selection& selection)<span class="keyword"> override </span>{</div>
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<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> <span class="comment">// If this Node box_ doesn't intersect with the selection, then no</span></div>
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<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> <span class="comment">// selection.</span></div>
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<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> <span class="keywordflow">if</span> (<a class="code hl_function" href="group__screen.html#a83d40499d9e8740c35dc2352c2ac84a8">Box::Intersection</a>(selection.GetBox(), box_).IsEmpty()) {</div>
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<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> <span class="keywordflow">return</span>;</div>
|
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<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> }</div>
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<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> </div>
|
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<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> Selection selection_saturated = selection.SaturateVertical(box_);</div>
|
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<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> </div>
|
||
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<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> <span class="keywordflow">for</span> (<span class="keyword">auto</span>& child : children_) {</div>
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<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> child->Select(selection_saturated);</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> }</div>
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<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span>};</div>
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<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span>} <span class="comment">// namespace</span></div>
|
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<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span><span class="comment"></span> </div>
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<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span><span class="comment">/// @brief A container displaying elements vertically one by one.</span></div>
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||
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<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span><span class="comment">/// @param children The elements in the container</span></div>
|
||
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<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span><span class="comment">/// @return The container.</span></div>
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<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span><span class="comment">/// @ingroup dom</span></div>
|
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<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span><span class="comment">///</span></div>
|
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<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span><span class="comment">/// #### Example</span></div>
|
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<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span><span class="comment">///</span></div>
|
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<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span><span class="comment">/// ```cpp</span></div>
|
||
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<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span><span class="comment">/// vbox({</span></div>
|
||
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<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span><span class="comment">/// text("Up"),</span></div>
|
||
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<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span><span class="comment">/// text("Down"),</span></div>
|
||
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<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span><span class="comment">/// });</span></div>
|
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<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span><span class="comment">/// ```</span></div>
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<div class="foldopen" id="foldopen00096" data-start="{" data-end="}">
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<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"><a class="line" href="group__dom.html#gafd28058f0ccbbdf34691a85a7cc9b2e3"> 96</a></span><span class="comment"></span><a class="code hl_typedef" href="namespaceftxui.html#a2bc31f2d685189e5c61d2293a1f51b4f">Element</a> <a class="code hl_function" href="group__dom.html#gafd28058f0ccbbdf34691a85a7cc9b2e3">vbox</a>(<a class="code hl_typedef" href="namespaceftxui.html#a5d4aa06ca6cc6a72e981bd5386f93f0a">Elements</a> children) {</div>
|
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<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> <span class="keywordflow">return</span> std::make_shared<VBox>(std::move(children));</div>
|
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<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span>}</div>
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</div>
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<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> </div>
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<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</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="abox__helper_8hpp_html"><div class="ttname"><a href="box__helper_8hpp.html">box_helper.hpp</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_a2ed318aaadb07efc50e76fce1ccf9637"><div class="ttname"><a href="group__dom.html#a2ed318aaadb07efc50e76fce1ccf9637">ftxui::Node::SetBox</a></div><div class="ttdeci">virtual void SetBox(Box box)</div><div class="ttdoc">Assign a position and a dimension to an element for drawing.</div><div class="ttdef"><b>Definition</b> <a href="node_8cpp_source.html#l00041">node.cpp:41</a></div></div>
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<div class="ttc" id="agroup__dom_html_gafd28058f0ccbbdf34691a85a7cc9b2e3"><div class="ttname"><a href="group__dom.html#gafd28058f0ccbbdf34691a85a7cc9b2e3">ftxui::vbox</a></div><div class="ttdeci">Element vbox(Elements)</div><div class="ttdoc">A container displaying elements vertically one by one.</div><div class="ttdef"><b>Definition</b> <a href="#l00096">vbox.cpp:96</a></div></div>
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<div class="ttc" id="agroup__screen_html_a83d40499d9e8740c35dc2352c2ac84a8"><div class="ttname"><a href="group__screen.html#a83d40499d9e8740c35dc2352c2ac84a8">ftxui::Box::Intersection</a></div><div class="ttdeci">static auto Intersection(Box a, Box b) -> Box</div><div class="ttdef"><b>Definition</b> <a href="box_8cpp_source.html#l00011">box.cpp:11</a></div></div>
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<div class="ttc" id="anamespaceftxui_1_1box__helper_html_aede4ed6e71fbe0689a500ff8db06f3a3"><div class="ttname"><a href="namespaceftxui_1_1box__helper.html#aede4ed6e71fbe0689a500ff8db06f3a3">ftxui::box_helper::Compute</a></div><div class="ttdeci">void Compute(std::vector< Element > *elements, int target_size)</div><div class="ttdef"><b>Definition</b> <a href="box__helper_8cpp_source.html#l00065">box_helper.cpp:65</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_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="anamespaceftxui_html_a5d4aa06ca6cc6a72e981bd5386f93f0a"><div class="ttname"><a href="namespaceftxui.html#a5d4aa06ca6cc6a72e981bd5386f93f0a">ftxui::Elements</a></div><div class="ttdeci">std::vector< Element > Elements</div><div class="ttdef"><b>Definition</b> <a href="elements_8hpp_source.html#l00023">elements.hpp:23</a></div></div>
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<div class="ttc" id="anode_8hpp_html"><div class="ttname"><a href="node_8hpp.html">node.hpp</a></div></div>
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<div class="ttc" id="arequirement_8hpp_html"><div class="ttname"><a href="requirement_8hpp.html">requirement.hpp</a></div></div>
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<div class="ttc" id="aselection_8hpp_html"><div class="ttname"><a href="selection_8hpp.html">selection.hpp</a></div></div>
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