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  36.    <div id="projectbrief">This is a minimal-state, immediate-mode graphical user interface toolkit written in ANSI C and licensed under public domain. It was designed as a simple embeddable user interface for application and does not have any dependencies, a default render backend or OS window/input handling but instead provides a highly modular, library-based approach, with simple input state for input and draw commands describing primitive shapes as output. So instead of providing a layered library that tries to abstract over a number of platform and render backends, it focuses only on the actual UI.</div>
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  100.   <div class="headertitle"><div class="title">nuklear_tooltip.c</div></div>
    101. 

  101. </div><!--header-->
    102. 

  102. <div class="contents">
    103. 

  103. <div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno">    1</span><span class="preprocessor">#include &quot;<a class="code" href="nuklear_8h.html">nuklear.h</a>&quot;</span></div>
    104. 

  104. <div class="line"><a id="l00002" name="l00002"></a><span class="lineno">    2</span><span class="preprocessor">#include &quot;nuklear_internal.h&quot;</span></div>
    105. 

  105. <div class="line"><a id="l00003" name="l00003"></a><span class="lineno">    3</span> </div>
    106. 

  106. <div class="line"><a id="l00004" name="l00004"></a><span class="lineno">    4</span><span class="comment">/* ===============================================================</span></div>
    107. 

  107. <div class="line"><a id="l00005" name="l00005"></a><span class="lineno">    5</span><span class="comment"> *</span></div>
    108. 

  108. <div class="line"><a id="l00006" name="l00006"></a><span class="lineno">    6</span><span class="comment"> *                              TOOLTIP</span></div>
    109. 

  109. <div class="line"><a id="l00007" name="l00007"></a><span class="lineno">    7</span><span class="comment"> *</span></div>
    110. 

  110. <div class="line"><a id="l00008" name="l00008"></a><span class="lineno">    8</span><span class="comment"> * ===============================================================*/</span></div>
    111. 

  111. <div class="line"><a id="l00009" name="l00009"></a><span class="lineno">    9</span>NK_API nk_bool</div>
    112. 

  112. <div class="line"><a id="l00010" name="l00010"></a><span class="lineno">   10</span>nk_tooltip_begin(<span class="keyword">struct</span> <a class="code hl_struct" href="structnk__context.html">nk_context</a> *ctx, <span class="keywordtype">float</span> width)</div>
    113. 

  113. <div class="line"><a id="l00011" name="l00011"></a><span class="lineno">   11</span>{</div>
    114. 

  114. <div class="line"><a id="l00012" name="l00012"></a><span class="lineno">   12</span>    <span class="keywordtype">int</span> x,y,w,h;</div>
    115. 

  115. <div class="line"><a id="l00013" name="l00013"></a><span class="lineno">   13</span>    <span class="keyword">struct </span><a class="code hl_struct" href="structnk__window.html">nk_window</a> *win;</div>
    116. 

  116. <div class="line"><a id="l00014" name="l00014"></a><span class="lineno">   14</span>    <span class="keyword">const</span> <span class="keyword">struct </span><a class="code hl_struct" href="structnk__input.html">nk_input</a> *in;</div>
    117. 

  117. <div class="line"><a id="l00015" name="l00015"></a><span class="lineno">   15</span>    <span class="keyword">struct </span><a class="code hl_struct" href="structnk__rect.html">nk_rect</a> bounds;</div>
    118. 

  118. <div class="line"><a id="l00016" name="l00016"></a><span class="lineno">   16</span>    <span class="keywordtype">int</span> ret;</div>
    119. 

  119. <div class="line"><a id="l00017" name="l00017"></a><span class="lineno">   17</span> </div>
    120. 

  120. <div class="line"><a id="l00018" name="l00018"></a><span class="lineno">   18</span>    NK_ASSERT(ctx);</div>
    121. 

  121. <div class="line"><a id="l00019" name="l00019"></a><span class="lineno">   19</span>    NK_ASSERT(ctx-&gt;current);</div>
    122. 

  122. <div class="line"><a id="l00020" name="l00020"></a><span class="lineno">   20</span>    NK_ASSERT(ctx-&gt;current-&gt;layout);</div>
    123. 

  123. <div class="line"><a id="l00021" name="l00021"></a><span class="lineno">   21</span>    <span class="keywordflow">if</span> (!ctx || !ctx-&gt;current || !ctx-&gt;current-&gt;layout)</div>
    124. 

  124. <div class="line"><a id="l00022" name="l00022"></a><span class="lineno">   22</span>        <span class="keywordflow">return</span> 0;</div>
    125. 

  125. <div class="line"><a id="l00023" name="l00023"></a><span class="lineno">   23</span> </div>
    126. 

  126. <div class="line"><a id="l00024" name="l00024"></a><span class="lineno">   24</span>    <span class="comment">/* make sure that no nonblocking popup is currently active */</span></div>
    127. 

  127. <div class="line"><a id="l00025" name="l00025"></a><span class="lineno">   25</span>    win = ctx-&gt;current;</div>
    128. 

  128. <div class="line"><a id="l00026" name="l00026"></a><span class="lineno">   26</span>    in = &amp;ctx-&gt;input;</div>
    129. 

  129. <div class="line"><a id="l00027" name="l00027"></a><span class="lineno">   27</span>    <span class="keywordflow">if</span> (win-&gt;popup.win &amp;&amp; ((<span class="keywordtype">int</span>)win-&gt;popup.type &amp; (<span class="keywordtype">int</span>)NK_PANEL_SET_NONBLOCK))</div>
    130. 

  130. <div class="line"><a id="l00028" name="l00028"></a><span class="lineno">   28</span>        <span class="keywordflow">return</span> 0;</div>
    131. 

  131. <div class="line"><a id="l00029" name="l00029"></a><span class="lineno">   29</span> </div>
    132. 

  132. <div class="line"><a id="l00030" name="l00030"></a><span class="lineno">   30</span>    w = nk_iceilf(width);</div>
    133. 

  133. <div class="line"><a id="l00031" name="l00031"></a><span class="lineno">   31</span>    h = nk_iceilf(nk_null_rect.h);</div>
    134. 

  134. <div class="line"><a id="l00032" name="l00032"></a><span class="lineno">   32</span>    x = nk_ifloorf(in-&gt;mouse.pos.x + 1) - (int)win-&gt;layout-&gt;clip.x;</div>
    135. 

  135. <div class="line"><a id="l00033" name="l00033"></a><span class="lineno">   33</span>    y = nk_ifloorf(in-&gt;mouse.pos.y + 1) - (int)win-&gt;layout-&gt;clip.y;</div>
    136. 

  136. <div class="line"><a id="l00034" name="l00034"></a><span class="lineno">   34</span> </div>
    137. 

  137. <div class="line"><a id="l00035" name="l00035"></a><span class="lineno">   35</span>    bounds.x = (float)x;</div>
    138. 

  138. <div class="line"><a id="l00036" name="l00036"></a><span class="lineno">   36</span>    bounds.y = (float)y;</div>
    139. 

  139. <div class="line"><a id="l00037" name="l00037"></a><span class="lineno">   37</span>    bounds.w = (float)w;</div>
    140. 

  140. <div class="line"><a id="l00038" name="l00038"></a><span class="lineno">   38</span>    bounds.h = (float)h;</div>
    141. 

  141. <div class="line"><a id="l00039" name="l00039"></a><span class="lineno">   39</span> </div>
    142. 

  142. <div class="line"><a id="l00040" name="l00040"></a><span class="lineno">   40</span>    ret = nk_popup_begin(ctx, NK_POPUP_DYNAMIC,</div>
    143. 

  143. <div class="line"><a id="l00041" name="l00041"></a><span class="lineno">   41</span>        <span class="stringliteral">&quot;__##Tooltip##__&quot;</span>, NK_WINDOW_NO_SCROLLBAR|NK_WINDOW_BORDER, bounds);</div>
    144. 

  144. <div class="line"><a id="l00042" name="l00042"></a><span class="lineno">   42</span>    <span class="keywordflow">if</span> (ret) win-&gt;layout-&gt;flags &amp;= ~(nk_flags)<a class="code hl_enumvalue" href="nuklear_8h.html#a2c89a31da47e59bdfa3813d2db18dbcba8aef178528a755ee12bd36d5a4e41837">NK_WINDOW_ROM</a>;</div>
    145. 

  145. <div class="line"><a id="l00043" name="l00043"></a><span class="lineno">   43</span>    win-&gt;popup.type = NK_PANEL_TOOLTIP;</div>
    146. 

  146. <div class="line"><a id="l00044" name="l00044"></a><span class="lineno">   44</span>    ctx-&gt;current-&gt;layout-&gt;type = NK_PANEL_TOOLTIP;</div>
    147. 

  147. <div class="line"><a id="l00045" name="l00045"></a><span class="lineno">   45</span>    <span class="keywordflow">return</span> ret;</div>
    148. 

  148. <div class="line"><a id="l00046" name="l00046"></a><span class="lineno">   46</span>}</div>
    149. 

  149. <div class="line"><a id="l00047" name="l00047"></a><span class="lineno">   47</span> </div>
    150. 

  150. <div class="line"><a id="l00048" name="l00048"></a><span class="lineno">   48</span>NK_API <span class="keywordtype">void</span></div>
    151. 

  151. <div class="line"><a id="l00049" name="l00049"></a><span class="lineno">   49</span>nk_tooltip_end(<span class="keyword">struct</span> <a class="code hl_struct" href="structnk__context.html">nk_context</a> *ctx)</div>
    152. 

  152. <div class="line"><a id="l00050" name="l00050"></a><span class="lineno">   50</span>{</div>
    153. 

  153. <div class="line"><a id="l00051" name="l00051"></a><span class="lineno">   51</span>    NK_ASSERT(ctx);</div>
    154. 

  154. <div class="line"><a id="l00052" name="l00052"></a><span class="lineno">   52</span>    NK_ASSERT(ctx-&gt;current);</div>
    155. 

  155. <div class="line"><a id="l00053" name="l00053"></a><span class="lineno">   53</span>    <span class="keywordflow">if</span> (!ctx || !ctx-&gt;current) <span class="keywordflow">return</span>;</div>
    156. 

  156. <div class="line"><a id="l00054" name="l00054"></a><span class="lineno">   54</span>    ctx-&gt;current-&gt;seq--;</div>
    157. 

  157. <div class="line"><a id="l00055" name="l00055"></a><span class="lineno">   55</span>    nk_popup_close(ctx);</div>
    158. 

  158. <div class="line"><a id="l00056" name="l00056"></a><span class="lineno">   56</span>    nk_popup_end(ctx);</div>
    159. 

  159. <div class="line"><a id="l00057" name="l00057"></a><span class="lineno">   57</span>}</div>
    160. 

  160. <div class="line"><a id="l00058" name="l00058"></a><span class="lineno">   58</span>NK_API <span class="keywordtype">void</span></div>
    161. 

  161. <div class="line"><a id="l00059" name="l00059"></a><span class="lineno">   59</span>nk_tooltip(<span class="keyword">struct</span> <a class="code hl_struct" href="structnk__context.html">nk_context</a> *ctx, <span class="keyword">const</span> <span class="keywordtype">char</span> *text)</div>
    162. 

  162. <div class="line"><a id="l00060" name="l00060"></a><span class="lineno">   60</span>{</div>
    163. 

  163. <div class="line"><a id="l00061" name="l00061"></a><span class="lineno">   61</span>    <span class="keyword">const</span> <span class="keyword">struct </span><a class="code hl_struct" href="structnk__style.html">nk_style</a> *style;</div>
    164. 

  164. <div class="line"><a id="l00062" name="l00062"></a><span class="lineno">   62</span>    <span class="keyword">struct </span><a class="code hl_struct" href="structnk__vec2.html">nk_vec2</a> padding;</div>
    165. 

  165. <div class="line"><a id="l00063" name="l00063"></a><span class="lineno">   63</span> </div>
    166. 

  166. <div class="line"><a id="l00064" name="l00064"></a><span class="lineno">   64</span>    <span class="keywordtype">int</span> text_len;</div>
    167. 

  167. <div class="line"><a id="l00065" name="l00065"></a><span class="lineno">   65</span>    <span class="keywordtype">float</span> text_width;</div>
    168. 

  168. <div class="line"><a id="l00066" name="l00066"></a><span class="lineno">   66</span>    <span class="keywordtype">float</span> text_height;</div>
    169. 

  169. <div class="line"><a id="l00067" name="l00067"></a><span class="lineno">   67</span> </div>
    170. 

  170. <div class="line"><a id="l00068" name="l00068"></a><span class="lineno">   68</span>    NK_ASSERT(ctx);</div>
    171. 

  171. <div class="line"><a id="l00069" name="l00069"></a><span class="lineno">   69</span>    NK_ASSERT(ctx-&gt;current);</div>
    172. 

  172. <div class="line"><a id="l00070" name="l00070"></a><span class="lineno">   70</span>    NK_ASSERT(ctx-&gt;current-&gt;layout);</div>
    173. 

  173. <div class="line"><a id="l00071" name="l00071"></a><span class="lineno">   71</span>    NK_ASSERT(text);</div>
    174. 

  174. <div class="line"><a id="l00072" name="l00072"></a><span class="lineno">   72</span>    <span class="keywordflow">if</span> (!ctx || !ctx-&gt;current || !ctx-&gt;current-&gt;layout || !text)</div>
    175. 

  175. <div class="line"><a id="l00073" name="l00073"></a><span class="lineno">   73</span>        <span class="keywordflow">return</span>;</div>
    176. 

  176. <div class="line"><a id="l00074" name="l00074"></a><span class="lineno">   74</span> </div>
    177. 

  177. <div class="line"><a id="l00075" name="l00075"></a><span class="lineno">   75</span>    <span class="comment">/* fetch configuration data */</span></div>
    178. 

  178. <div class="line"><a id="l00076" name="l00076"></a><span class="lineno">   76</span>    style = &amp;ctx-&gt;style;</div>
    179. 

  179. <div class="line"><a id="l00077" name="l00077"></a><span class="lineno">   77</span>    padding = style-&gt;window.padding;</div>
    180. 

  180. <div class="line"><a id="l00078" name="l00078"></a><span class="lineno">   78</span> </div>
    181. 

  181. <div class="line"><a id="l00079" name="l00079"></a><span class="lineno">   79</span>    <span class="comment">/* calculate size of the text and tooltip */</span></div>
    182. 

  182. <div class="line"><a id="l00080" name="l00080"></a><span class="lineno">   80</span>    text_len = nk_strlen(text);</div>
    183. 

  183. <div class="line"><a id="l00081" name="l00081"></a><span class="lineno">   81</span>    text_width = style-&gt;font-&gt;<a class="code hl_variable" href="structnk__user__font.html#aac686ca3e72208ddfb982caa7c89293a">width</a>(style-&gt;font-&gt;userdata,</div>
    184. 

  184. <div class="line"><a id="l00082" name="l00082"></a><span class="lineno">   82</span>                    style-&gt;font-&gt;<a class="code hl_variable" href="structnk__user__font.html#ab98ed37df408e0c2febfe448897ccf82">height</a>, text, text_len);</div>
    185. 

  185. <div class="line"><a id="l00083" name="l00083"></a><span class="lineno">   83</span>    text_width += (4 * padding.x);</div>
    186. 

  186. <div class="line"><a id="l00084" name="l00084"></a><span class="lineno">   84</span>    text_height = (style-&gt;font-&gt;<a class="code hl_variable" href="structnk__user__font.html#ab98ed37df408e0c2febfe448897ccf82">height</a> + 2 * padding.y);</div>
    187. 

  187. <div class="line"><a id="l00085" name="l00085"></a><span class="lineno">   85</span> </div>
    188. 

  188. <div class="line"><a id="l00086" name="l00086"></a><span class="lineno">   86</span>    <span class="comment">/* execute tooltip and fill with text */</span></div>
    189. 

  189. <div class="line"><a id="l00087" name="l00087"></a><span class="lineno">   87</span>    <span class="keywordflow">if</span> (nk_tooltip_begin(ctx, (<span class="keywordtype">float</span>)text_width)) {</div>
    190. 

  190. <div class="line"><a id="l00088" name="l00088"></a><span class="lineno">   88</span>        <a class="code hl_function" href="nuklear_8h.html#a76e65dc775c0bd5efaa3c8f38f96823f">nk_layout_row_dynamic</a>(ctx, (<span class="keywordtype">float</span>)text_height, 1);</div>
    191. 

  191. <div class="line"><a id="l00089" name="l00089"></a><span class="lineno">   89</span>        <a class="code hl_struct" href="structnk__text.html">nk_text</a>(ctx, text, text_len, NK_TEXT_LEFT);</div>
    192. 

  192. <div class="line"><a id="l00090" name="l00090"></a><span class="lineno">   90</span>        nk_tooltip_end(ctx);</div>
    193. 

  193. <div class="line"><a id="l00091" name="l00091"></a><span class="lineno">   91</span>    }</div>
    194. 

  194. <div class="line"><a id="l00092" name="l00092"></a><span class="lineno">   92</span>}</div>
    195. 

  195. <div class="line"><a id="l00093" name="l00093"></a><span class="lineno">   93</span><span class="preprocessor">#ifdef NK_INCLUDE_STANDARD_VARARGS</span></div>
    196. 

  196. <div class="line"><a id="l00094" name="l00094"></a><span class="lineno">   94</span>NK_API <span class="keywordtype">void</span></div>
    197. 

  197. <div class="line"><a id="l00095" name="l00095"></a><span class="lineno">   95</span>nk_tooltipf(<span class="keyword">struct</span> <a class="code hl_struct" href="structnk__context.html">nk_context</a> *ctx, <span class="keyword">const</span> <span class="keywordtype">char</span> *fmt, ...)</div>
    198. 

  198. <div class="line"><a id="l00096" name="l00096"></a><span class="lineno">   96</span>{</div>
    199. 

  199. <div class="line"><a id="l00097" name="l00097"></a><span class="lineno">   97</span>    va_list args;</div>
    200. 

  200. <div class="line"><a id="l00098" name="l00098"></a><span class="lineno">   98</span>    va_start(args, fmt);</div>
    201. 

  201. <div class="line"><a id="l00099" name="l00099"></a><span class="lineno">   99</span>    nk_tooltipfv(ctx, fmt, args);</div>
    202. 

  202. <div class="line"><a id="l00100" name="l00100"></a><span class="lineno">  100</span>    va_end(args);</div>
    203. 

  203. <div class="line"><a id="l00101" name="l00101"></a><span class="lineno">  101</span>}</div>
    204. 

  204. <div class="line"><a id="l00102" name="l00102"></a><span class="lineno">  102</span>NK_API <span class="keywordtype">void</span></div>
    205. 

  205. <div class="line"><a id="l00103" name="l00103"></a><span class="lineno">  103</span>nk_tooltipfv(<span class="keyword">struct</span> <a class="code hl_struct" href="structnk__context.html">nk_context</a> *ctx, <span class="keyword">const</span> <span class="keywordtype">char</span> *fmt, va_list args)</div>
    206. 

  206. <div class="line"><a id="l00104" name="l00104"></a><span class="lineno">  104</span>{</div>
    207. 

  207. <div class="line"><a id="l00105" name="l00105"></a><span class="lineno">  105</span>    <span class="keywordtype">char</span> buf[256];</div>
    208. 

  208. <div class="line"><a id="l00106" name="l00106"></a><span class="lineno">  106</span>    nk_strfmt(buf, NK_LEN(buf), fmt, args);</div>
    209. 

  209. <div class="line"><a id="l00107" name="l00107"></a><span class="lineno">  107</span>    nk_tooltip(ctx, buf);</div>
    210. 

  210. <div class="line"><a id="l00108" name="l00108"></a><span class="lineno">  108</span>}</div>
    211. 

  211. <div class="line"><a id="l00109" name="l00109"></a><span class="lineno">  109</span><span class="preprocessor">#endif</span></div>
    212. 

  212. <div class="line"><a id="l00110" name="l00110"></a><span class="lineno">  110</span> </div>
    213. 

  213. <div class="line"><a id="l00111" name="l00111"></a><span class="lineno">  111</span> </div>
    214. 

  214. <div class="ttc" id="anuklear_8h_html"><div class="ttname"><a href="nuklear_8h.html">nuklear.h</a></div><div class="ttdoc">main API and documentation file</div></div>
    215. 

  215. <div class="ttc" id="anuklear_8h_html_a2c89a31da47e59bdfa3813d2db18dbcba8aef178528a755ee12bd36d5a4e41837"><div class="ttname"><a href="nuklear_8h.html#a2c89a31da47e59bdfa3813d2db18dbcba8aef178528a755ee12bd36d5a4e41837">NK_WINDOW_ROM</a></div><div class="ttdeci">@ NK_WINDOW_ROM</div><div class="ttdoc">sets window widgets into a read only mode and does not allow input changes</div><div class="ttdef"><b>Definition</b> <a href="nuklear_8h_source.html#l05493">nuklear.h:5493</a></div></div>
    216. 

  216. <div class="ttc" id="anuklear_8h_html_a76e65dc775c0bd5efaa3c8f38f96823f"><div class="ttname"><a href="nuklear_8h.html#a76e65dc775c0bd5efaa3c8f38f96823f">nk_layout_row_dynamic</a></div><div class="ttdeci">NK_API void nk_layout_row_dynamic(struct nk_context *ctx, float height, int cols)</div><div class="ttdoc">Sets current row layout to share horizontal space between @cols number of widgets evenly.</div><div class="ttdef"><b>Definition</b> <a href="nuklear__layout_8c_source.html#l00147">nuklear_layout.c:147</a></div></div>
    217. 

  217. <div class="ttc" id="astructnk__context_html"><div class="ttname"><a href="structnk__context.html">nk_context</a></div><div class="ttdef"><b>Definition</b> <a href="nuklear_8h_source.html#l05705">nuklear.h:5705</a></div></div>
    218. 

  218. <div class="ttc" id="astructnk__input_html"><div class="ttname"><a href="structnk__input.html">nk_input</a></div><div class="ttdef"><b>Definition</b> <a href="nuklear_8h_source.html#l04699">nuklear.h:4699</a></div></div>
    219. 

  219. <div class="ttc" id="astructnk__rect_html"><div class="ttname"><a href="structnk__rect.html">nk_rect</a></div><div class="ttdef"><b>Definition</b> <a href="nuklear_8h_source.html#l00265">nuklear.h:265</a></div></div>
    220. 

  220. <div class="ttc" id="astructnk__style_html"><div class="ttname"><a href="structnk__style.html">nk_style</a></div><div class="ttdef"><b>Definition</b> <a href="nuklear_8h_source.html#l05347">nuklear.h:5347</a></div></div>
    221. 

  221. <div class="ttc" id="astructnk__text_html"><div class="ttname"><a href="structnk__text.html">nk_text</a></div><div class="ttdef"><b>Definition</b> <a href="nuklear__internal_8h_source.html#l00236">nuklear_internal.h:236</a></div></div>
    222. 

  222. <div class="ttc" id="astructnk__user__font_html_aac686ca3e72208ddfb982caa7c89293a"><div class="ttname"><a href="structnk__user__font.html#aac686ca3e72208ddfb982caa7c89293a">nk_user_font::width</a></div><div class="ttdeci">nk_text_width_f width</div><div class="ttdoc">!&lt; max height of the font</div><div class="ttdef"><b>Definition</b> <a href="nuklear_8h_source.html#l04009">nuklear.h:4009</a></div></div>
    223. 

  223. <div class="ttc" id="astructnk__user__font_html_ab98ed37df408e0c2febfe448897ccf82"><div class="ttname"><a href="structnk__user__font.html#ab98ed37df408e0c2febfe448897ccf82">nk_user_font::height</a></div><div class="ttdeci">float height</div><div class="ttdoc">!&lt; user provided font handle</div><div class="ttdef"><b>Definition</b> <a href="nuklear_8h_source.html#l04008">nuklear.h:4008</a></div></div>
    224. 

  224. <div class="ttc" id="astructnk__vec2_html"><div class="ttname"><a href="structnk__vec2.html">nk_vec2</a></div><div class="ttdef"><b>Definition</b> <a href="nuklear_8h_source.html#l00263">nuklear.h:263</a></div></div>
    225. 

  225. <div class="ttc" id="astructnk__window_html"><div class="ttname"><a href="structnk__window.html">nk_window</a></div><div class="ttdef"><b>Definition</b> <a href="nuklear_8h_source.html#l05539">nuklear.h:5539</a></div></div>
    226. 

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    227. 

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    229. 

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    230. 

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    231. 

  231.     <li class="navelem"><a class="el" href="dir_68267d1309a1af8e8297ef4c3efbcdba.html">src</a></li><li class="navelem"><b>nuklear_tooltip.c</b></li>
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