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  100.   <div class="headertitle"><div class="title">nuklear_scrollbar.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"> *                              SCROLLBAR</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_LIB <span class="keywordtype">float</span></div>
    112. 

  112. <div class="line"><a id="l00010" name="l00010"></a><span class="lineno">   10</span>nk_scrollbar_behavior(nk_flags *state, <span class="keyword">struct</span> <a class="code hl_struct" href="structnk__input.html">nk_input</a> *in,</div>
    113. 

  113. <div class="line"><a id="l00011" name="l00011"></a><span class="lineno">   11</span>    <span class="keywordtype">int</span> has_scrolling, <span class="keyword">const</span> <span class="keyword">struct</span> <a class="code hl_struct" href="structnk__rect.html">nk_rect</a> *scroll,</div>
    114. 

  114. <div class="line"><a id="l00012" name="l00012"></a><span class="lineno">   12</span>    <span class="keyword">const</span> <span class="keyword">struct</span> <a class="code hl_struct" href="structnk__rect.html">nk_rect</a> *cursor, <span class="keyword">const</span> <span class="keyword">struct</span> <a class="code hl_struct" href="structnk__rect.html">nk_rect</a> *empty0,</div>
    115. 

  115. <div class="line"><a id="l00013" name="l00013"></a><span class="lineno">   13</span>    <span class="keyword">const</span> <span class="keyword">struct</span> <a class="code hl_struct" href="structnk__rect.html">nk_rect</a> *empty1, <span class="keywordtype">float</span> scroll_offset,</div>
    116. 

  116. <div class="line"><a id="l00014" name="l00014"></a><span class="lineno">   14</span>    <span class="keywordtype">float</span> target, <span class="keywordtype">float</span> scroll_step, <span class="keyword">enum</span> nk_orientation o)</div>
    117. 

  117. <div class="line"><a id="l00015" name="l00015"></a><span class="lineno">   15</span>{</div>
    118. 

  118. <div class="line"><a id="l00016" name="l00016"></a><span class="lineno">   16</span>    nk_flags ws = 0;</div>
    119. 

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

  120. <div class="line"><a id="l00018" name="l00018"></a><span class="lineno">   18</span>    <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> left_mouse_clicked;</div>
    121. 

  121. <div class="line"><a id="l00019" name="l00019"></a><span class="lineno">   19</span>    <span class="keywordtype">int</span> left_mouse_click_in_cursor;</div>
    122. 

  122. <div class="line"><a id="l00020" name="l00020"></a><span class="lineno">   20</span>    <span class="keywordtype">float</span> scroll_delta;</div>
    123. 

  123. <div class="line"><a id="l00021" name="l00021"></a><span class="lineno">   21</span> </div>
    124. 

  124. <div class="line"><a id="l00022" name="l00022"></a><span class="lineno">   22</span>    nk_widget_state_reset(state);</div>
    125. 

  125. <div class="line"><a id="l00023" name="l00023"></a><span class="lineno">   23</span>    <span class="keywordflow">if</span> (!in) <span class="keywordflow">return</span> scroll_offset;</div>
    126. 

  126. <div class="line"><a id="l00024" name="l00024"></a><span class="lineno">   24</span> </div>
    127. 

  127. <div class="line"><a id="l00025" name="l00025"></a><span class="lineno">   25</span>    left_mouse_down = in-&gt;mouse.buttons[NK_BUTTON_LEFT].down;</div>
    128. 

  128. <div class="line"><a id="l00026" name="l00026"></a><span class="lineno">   26</span>    left_mouse_clicked = in-&gt;mouse.buttons[NK_BUTTON_LEFT].clicked;</div>
    129. 

  129. <div class="line"><a id="l00027" name="l00027"></a><span class="lineno">   27</span>    left_mouse_click_in_cursor = nk_input_has_mouse_click_down_in_rect(in,</div>
    130. 

  130. <div class="line"><a id="l00028" name="l00028"></a><span class="lineno">   28</span>        NK_BUTTON_LEFT, *cursor, nk_true);</div>
    131. 

  131. <div class="line"><a id="l00029" name="l00029"></a><span class="lineno">   29</span>    <span class="keywordflow">if</span> (nk_input_is_mouse_hovering_rect(in, *scroll))</div>
    132. 

  132. <div class="line"><a id="l00030" name="l00030"></a><span class="lineno">   30</span>        *state = <a class="code hl_enumvalue" href="nuklear_8h.html#a894de85b018e1e285053f71b6c9943ecacce4016e3b9a1f21434caa9180d3e71a">NK_WIDGET_STATE_HOVERED</a>;</div>
    133. 

  133. <div class="line"><a id="l00031" name="l00031"></a><span class="lineno">   31</span> </div>
    134. 

  134. <div class="line"><a id="l00032" name="l00032"></a><span class="lineno">   32</span>    scroll_delta = (o == NK_VERTICAL) ? in-&gt;mouse.scroll_delta.y: in-&gt;mouse.scroll_delta.x;</div>
    135. 

  135. <div class="line"><a id="l00033" name="l00033"></a><span class="lineno">   33</span>    <span class="keywordflow">if</span> (left_mouse_down &amp;&amp; left_mouse_click_in_cursor &amp;&amp; !left_mouse_clicked) {</div>
    136. 

  136. <div class="line"><a id="l00034" name="l00034"></a><span class="lineno">   34</span>        <span class="comment">/* update cursor by mouse dragging */</span></div>
    137. 

  137. <div class="line"><a id="l00035" name="l00035"></a><span class="lineno">   35</span>        <span class="keywordtype">float</span> pixel, delta;</div>
    138. 

  138. <div class="line"><a id="l00036" name="l00036"></a><span class="lineno">   36</span>        *state = <a class="code hl_enumvalue" href="nuklear_8h.html#a894de85b018e1e285053f71b6c9943ecac98cceb386b40c1fd53c0e3767981d72">NK_WIDGET_STATE_ACTIVE</a>;</div>
    139. 

  139. <div class="line"><a id="l00037" name="l00037"></a><span class="lineno">   37</span>        <span class="keywordflow">if</span> (o == NK_VERTICAL) {</div>
    140. 

  140. <div class="line"><a id="l00038" name="l00038"></a><span class="lineno">   38</span>            <span class="keywordtype">float</span> cursor_y;</div>
    141. 

  141. <div class="line"><a id="l00039" name="l00039"></a><span class="lineno">   39</span>            pixel = in-&gt;mouse.delta.y;</div>
    142. 

  142. <div class="line"><a id="l00040" name="l00040"></a><span class="lineno">   40</span>            delta = (pixel / scroll-&gt;h) * target;</div>
    143. 

  143. <div class="line"><a id="l00041" name="l00041"></a><span class="lineno">   41</span>            scroll_offset = NK_CLAMP(0, scroll_offset + delta, target - scroll-&gt;h);</div>
    144. 

  144. <div class="line"><a id="l00042" name="l00042"></a><span class="lineno">   42</span>            cursor_y = scroll-&gt;y + ((scroll_offset/target) * scroll-&gt;h);</div>
    145. 

  145. <div class="line"><a id="l00043" name="l00043"></a><span class="lineno">   43</span>            in-&gt;mouse.buttons[NK_BUTTON_LEFT].clicked_pos.y = cursor_y + cursor-&gt;h/2.0f;</div>
    146. 

  146. <div class="line"><a id="l00044" name="l00044"></a><span class="lineno">   44</span>        } <span class="keywordflow">else</span> {</div>
    147. 

  147. <div class="line"><a id="l00045" name="l00045"></a><span class="lineno">   45</span>            <span class="keywordtype">float</span> cursor_x;</div>
    148. 

  148. <div class="line"><a id="l00046" name="l00046"></a><span class="lineno">   46</span>            pixel = in-&gt;mouse.delta.x;</div>
    149. 

  149. <div class="line"><a id="l00047" name="l00047"></a><span class="lineno">   47</span>            delta = (pixel / scroll-&gt;w) * target;</div>
    150. 

  150. <div class="line"><a id="l00048" name="l00048"></a><span class="lineno">   48</span>            scroll_offset = NK_CLAMP(0, scroll_offset + delta, target - scroll-&gt;w);</div>
    151. 

  151. <div class="line"><a id="l00049" name="l00049"></a><span class="lineno">   49</span>            cursor_x = scroll-&gt;x + ((scroll_offset/target) * scroll-&gt;w);</div>
    152. 

  152. <div class="line"><a id="l00050" name="l00050"></a><span class="lineno">   50</span>            in-&gt;mouse.buttons[NK_BUTTON_LEFT].clicked_pos.x = cursor_x + cursor-&gt;w/2.0f;</div>
    153. 

  153. <div class="line"><a id="l00051" name="l00051"></a><span class="lineno">   51</span>        }</div>
    154. 

  154. <div class="line"><a id="l00052" name="l00052"></a><span class="lineno">   52</span>    } <span class="keywordflow">else</span> <span class="keywordflow">if</span> ((nk_input_is_key_pressed(in, NK_KEY_SCROLL_UP) &amp;&amp; o == NK_VERTICAL &amp;&amp; has_scrolling)||</div>
    155. 

  155. <div class="line"><a id="l00053" name="l00053"></a><span class="lineno">   53</span>            nk_button_behavior(&amp;ws, *empty0, in, NK_BUTTON_DEFAULT)) {</div>
    156. 

  156. <div class="line"><a id="l00054" name="l00054"></a><span class="lineno">   54</span>        <span class="comment">/* scroll page up by click on empty space or shortcut */</span></div>
    157. 

  157. <div class="line"><a id="l00055" name="l00055"></a><span class="lineno">   55</span>        <span class="keywordflow">if</span> (o == NK_VERTICAL)</div>
    158. 

  158. <div class="line"><a id="l00056" name="l00056"></a><span class="lineno">   56</span>            scroll_offset = NK_MAX(0, scroll_offset - scroll-&gt;h);</div>
    159. 

  159. <div class="line"><a id="l00057" name="l00057"></a><span class="lineno">   57</span>        <span class="keywordflow">else</span> scroll_offset = NK_MAX(0, scroll_offset - scroll-&gt;w);</div>
    160. 

  160. <div class="line"><a id="l00058" name="l00058"></a><span class="lineno">   58</span>    } <span class="keywordflow">else</span> <span class="keywordflow">if</span> ((nk_input_is_key_pressed(in, NK_KEY_SCROLL_DOWN) &amp;&amp; o == NK_VERTICAL &amp;&amp; has_scrolling) ||</div>
    161. 

  161. <div class="line"><a id="l00059" name="l00059"></a><span class="lineno">   59</span>        nk_button_behavior(&amp;ws, *empty1, in, NK_BUTTON_DEFAULT)) {</div>
    162. 

  162. <div class="line"><a id="l00060" name="l00060"></a><span class="lineno">   60</span>        <span class="comment">/* scroll page down by click on empty space or shortcut */</span></div>
    163. 

  163. <div class="line"><a id="l00061" name="l00061"></a><span class="lineno">   61</span>        <span class="keywordflow">if</span> (o == NK_VERTICAL)</div>
    164. 

  164. <div class="line"><a id="l00062" name="l00062"></a><span class="lineno">   62</span>            scroll_offset = NK_MIN(scroll_offset + scroll-&gt;h, target - scroll-&gt;h);</div>
    165. 

  165. <div class="line"><a id="l00063" name="l00063"></a><span class="lineno">   63</span>        <span class="keywordflow">else</span> scroll_offset = NK_MIN(scroll_offset + scroll-&gt;w, target - scroll-&gt;w);</div>
    166. 

  166. <div class="line"><a id="l00064" name="l00064"></a><span class="lineno">   64</span>    } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (has_scrolling) {</div>
    167. 

  167. <div class="line"><a id="l00065" name="l00065"></a><span class="lineno">   65</span>        <span class="keywordflow">if</span> ((scroll_delta &lt; 0 || (scroll_delta &gt; 0))) {</div>
    168. 

  168. <div class="line"><a id="l00066" name="l00066"></a><span class="lineno">   66</span>            <span class="comment">/* update cursor by mouse scrolling */</span></div>
    169. 

  169. <div class="line"><a id="l00067" name="l00067"></a><span class="lineno">   67</span>            scroll_offset = scroll_offset + scroll_step * (-scroll_delta);</div>
    170. 

  170. <div class="line"><a id="l00068" name="l00068"></a><span class="lineno">   68</span>            <span class="keywordflow">if</span> (o == NK_VERTICAL)</div>
    171. 

  171. <div class="line"><a id="l00069" name="l00069"></a><span class="lineno">   69</span>                scroll_offset = NK_CLAMP(0, scroll_offset, target - scroll-&gt;h);</div>
    172. 

  172. <div class="line"><a id="l00070" name="l00070"></a><span class="lineno">   70</span>            <span class="keywordflow">else</span> scroll_offset = NK_CLAMP(0, scroll_offset, target - scroll-&gt;w);</div>
    173. 

  173. <div class="line"><a id="l00071" name="l00071"></a><span class="lineno">   71</span>        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (nk_input_is_key_pressed(in, NK_KEY_SCROLL_START)) {</div>
    174. 

  174. <div class="line"><a id="l00072" name="l00072"></a><span class="lineno">   72</span>            <span class="comment">/* update cursor to the beginning  */</span></div>
    175. 

  175. <div class="line"><a id="l00073" name="l00073"></a><span class="lineno">   73</span>            <span class="keywordflow">if</span> (o == NK_VERTICAL) scroll_offset = 0;</div>
    176. 

  176. <div class="line"><a id="l00074" name="l00074"></a><span class="lineno">   74</span>        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (nk_input_is_key_pressed(in, NK_KEY_SCROLL_END)) {</div>
    177. 

  177. <div class="line"><a id="l00075" name="l00075"></a><span class="lineno">   75</span>            <span class="comment">/* update cursor to the end */</span></div>
    178. 

  178. <div class="line"><a id="l00076" name="l00076"></a><span class="lineno">   76</span>            <span class="keywordflow">if</span> (o == NK_VERTICAL) scroll_offset = target - scroll-&gt;h;</div>
    179. 

  179. <div class="line"><a id="l00077" name="l00077"></a><span class="lineno">   77</span>        }</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="keywordflow">if</span> (*state &amp; <a class="code hl_enumvalue" href="nuklear_8h.html#a894de85b018e1e285053f71b6c9943eca87f536ff0af612d2ac85e586780208f9">NK_WIDGET_STATE_HOVER</a> &amp;&amp; !nk_input_is_mouse_prev_hovering_rect(in, *scroll))</div>
    182. 

  182. <div class="line"><a id="l00080" name="l00080"></a><span class="lineno">   80</span>        *state |= <a class="code hl_enumvalue" href="nuklear_8h.html#a894de85b018e1e285053f71b6c9943eca65255dbe033baa60268dc401e4648be4">NK_WIDGET_STATE_ENTERED</a>;</div>
    183. 

  183. <div class="line"><a id="l00081" name="l00081"></a><span class="lineno">   81</span>    <span class="keywordflow">else</span> <span class="keywordflow">if</span> (nk_input_is_mouse_prev_hovering_rect(in, *scroll))</div>
    184. 

  184. <div class="line"><a id="l00082" name="l00082"></a><span class="lineno">   82</span>        *state |= <a class="code hl_enumvalue" href="nuklear_8h.html#a894de85b018e1e285053f71b6c9943eca2fb9071f1785d3bd24e5b2d3c54fadc6">NK_WIDGET_STATE_LEFT</a>;</div>
    185. 

  185. <div class="line"><a id="l00083" name="l00083"></a><span class="lineno">   83</span>    <span class="keywordflow">return</span> scroll_offset;</div>
    186. 

  186. <div class="line"><a id="l00084" name="l00084"></a><span class="lineno">   84</span>}</div>
    187. 

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

  188. <div class="line"><a id="l00086" name="l00086"></a><span class="lineno">   86</span>nk_draw_scrollbar(<span class="keyword">struct</span> <a class="code hl_struct" href="structnk__command__buffer.html">nk_command_buffer</a> *out, nk_flags state,</div>
    189. 

  189. <div class="line"><a id="l00087" name="l00087"></a><span class="lineno">   87</span>    <span class="keyword">const</span> <span class="keyword">struct</span> <a class="code hl_struct" href="structnk__style__scrollbar.html">nk_style_scrollbar</a> *style, <span class="keyword">const</span> <span class="keyword">struct</span> <a class="code hl_struct" href="structnk__rect.html">nk_rect</a> *bounds,</div>
    190. 

  190. <div class="line"><a id="l00088" name="l00088"></a><span class="lineno">   88</span>    <span class="keyword">const</span> <span class="keyword">struct</span> <a class="code hl_struct" href="structnk__rect.html">nk_rect</a> *scroll)</div>
    191. 

  191. <div class="line"><a id="l00089" name="l00089"></a><span class="lineno">   89</span>{</div>
    192. 

  192. <div class="line"><a id="l00090" name="l00090"></a><span class="lineno">   90</span>    <span class="keyword">const</span> <span class="keyword">struct </span><a class="code hl_struct" href="structnk__style__item.html">nk_style_item</a> *background;</div>
    193. 

  193. <div class="line"><a id="l00091" name="l00091"></a><span class="lineno">   91</span>    <span class="keyword">const</span> <span class="keyword">struct </span><a class="code hl_struct" href="structnk__style__item.html">nk_style_item</a> *cursor;</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="comment">/* select correct colors/images to draw */</span></div>
    196. 

  196. <div class="line"><a id="l00094" name="l00094"></a><span class="lineno">   94</span>    <span class="keywordflow">if</span> (state &amp; <a class="code hl_enumvalue" href="nuklear_8h.html#a894de85b018e1e285053f71b6c9943eca50500d1a5679bdcea512b954f2166861">NK_WIDGET_STATE_ACTIVED</a>) {</div>
    197. 

  197. <div class="line"><a id="l00095" name="l00095"></a><span class="lineno">   95</span>        background = &amp;style-&gt;active;</div>
    198. 

  198. <div class="line"><a id="l00096" name="l00096"></a><span class="lineno">   96</span>        cursor = &amp;style-&gt;cursor_active;</div>
    199. 

  199. <div class="line"><a id="l00097" name="l00097"></a><span class="lineno">   97</span>    } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (state &amp; <a class="code hl_enumvalue" href="nuklear_8h.html#a894de85b018e1e285053f71b6c9943eca87f536ff0af612d2ac85e586780208f9">NK_WIDGET_STATE_HOVER</a>) {</div>
    200. 

  200. <div class="line"><a id="l00098" name="l00098"></a><span class="lineno">   98</span>        background = &amp;style-&gt;hover;</div>
    201. 

  201. <div class="line"><a id="l00099" name="l00099"></a><span class="lineno">   99</span>        cursor = &amp;style-&gt;cursor_hover;</div>
    202. 

  202. <div class="line"><a id="l00100" name="l00100"></a><span class="lineno">  100</span>    } <span class="keywordflow">else</span> {</div>
    203. 

  203. <div class="line"><a id="l00101" name="l00101"></a><span class="lineno">  101</span>        background = &amp;style-&gt;normal;</div>
    204. 

  204. <div class="line"><a id="l00102" name="l00102"></a><span class="lineno">  102</span>        cursor = &amp;style-&gt;cursor_normal;</div>
    205. 

  205. <div class="line"><a id="l00103" name="l00103"></a><span class="lineno">  103</span>    }</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="comment">/* draw background */</span></div>
    208. 

  208. <div class="line"><a id="l00106" name="l00106"></a><span class="lineno">  106</span>    <span class="keywordflow">switch</span> (background-&gt;type) {</div>
    209. 

  209. <div class="line"><a id="l00107" name="l00107"></a><span class="lineno">  107</span>        <span class="keywordflow">case</span> NK_STYLE_ITEM_IMAGE:</div>
    210. 

  210. <div class="line"><a id="l00108" name="l00108"></a><span class="lineno">  108</span>            <a class="code hl_function" href="nuklear_8h.html#a322678fb670fa1d061dbed321ee38d1b">nk_draw_image</a>(out, *bounds, &amp;background-&gt;data.image, nk_white);</div>
    211. 

  211. <div class="line"><a id="l00109" name="l00109"></a><span class="lineno">  109</span>            <span class="keywordflow">break</span>;</div>
    212. 

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

  213. <div class="line"><a id="l00111" name="l00111"></a><span class="lineno">  111</span>            nk_draw_nine_slice(out, *bounds, &amp;background-&gt;data.slice, nk_white);</div>
    214. 

  214. <div class="line"><a id="l00112" name="l00112"></a><span class="lineno">  112</span>            <span class="keywordflow">break</span>;</div>
    215. 

  215. <div class="line"><a id="l00113" name="l00113"></a><span class="lineno">  113</span>        <span class="keywordflow">case</span> NK_STYLE_ITEM_COLOR:</div>
    216. 

  216. <div class="line"><a id="l00114" name="l00114"></a><span class="lineno">  114</span>            <a class="code hl_function" href="nuklear_8h.html#a63407f682d240622d8b025d7911596fb">nk_fill_rect</a>(out, *bounds, style-&gt;rounding, background-&gt;data.color);</div>
    217. 

  217. <div class="line"><a id="l00115" name="l00115"></a><span class="lineno">  115</span>            nk_stroke_rect(out, *bounds, style-&gt;rounding, style-&gt;border, style-&gt;border_color);</div>
    218. 

  218. <div class="line"><a id="l00116" name="l00116"></a><span class="lineno">  116</span>            <span class="keywordflow">break</span>;</div>
    219. 

  219. <div class="line"><a id="l00117" name="l00117"></a><span class="lineno">  117</span>    }</div>
    220. 

  220. <div class="line"><a id="l00118" name="l00118"></a><span class="lineno">  118</span> </div>
    221. 

  221. <div class="line"><a id="l00119" name="l00119"></a><span class="lineno">  119</span>    <span class="comment">/* draw cursor */</span></div>
    222. 

  222. <div class="line"><a id="l00120" name="l00120"></a><span class="lineno">  120</span>    <span class="keywordflow">switch</span> (cursor-&gt;type) {</div>
    223. 

  223. <div class="line"><a id="l00121" name="l00121"></a><span class="lineno">  121</span>        <span class="keywordflow">case</span> NK_STYLE_ITEM_IMAGE:</div>
    224. 

  224. <div class="line"><a id="l00122" name="l00122"></a><span class="lineno">  122</span>            <a class="code hl_function" href="nuklear_8h.html#a322678fb670fa1d061dbed321ee38d1b">nk_draw_image</a>(out, *scroll, &amp;cursor-&gt;data.image, nk_white);</div>
    225. 

  225. <div class="line"><a id="l00123" name="l00123"></a><span class="lineno">  123</span>            <span class="keywordflow">break</span>;</div>
    226. 

  226. <div class="line"><a id="l00124" name="l00124"></a><span class="lineno">  124</span>        <span class="keywordflow">case</span> NK_STYLE_ITEM_NINE_SLICE:</div>
    227. 

  227. <div class="line"><a id="l00125" name="l00125"></a><span class="lineno">  125</span>            nk_draw_nine_slice(out, *scroll, &amp;cursor-&gt;data.slice, nk_white);</div>
    228. 

  228. <div class="line"><a id="l00126" name="l00126"></a><span class="lineno">  126</span>            <span class="keywordflow">break</span>;</div>
    229. 

  229. <div class="line"><a id="l00127" name="l00127"></a><span class="lineno">  127</span>        <span class="keywordflow">case</span> NK_STYLE_ITEM_COLOR:</div>
    230. 

  230. <div class="line"><a id="l00128" name="l00128"></a><span class="lineno">  128</span>            <a class="code hl_function" href="nuklear_8h.html#a63407f682d240622d8b025d7911596fb">nk_fill_rect</a>(out, *scroll, style-&gt;rounding_cursor, cursor-&gt;data.color);</div>
    231. 

  231. <div class="line"><a id="l00129" name="l00129"></a><span class="lineno">  129</span>            nk_stroke_rect(out, *scroll, style-&gt;rounding_cursor, style-&gt;border_cursor, style-&gt;cursor_border_color);</div>
    232. 

  232. <div class="line"><a id="l00130" name="l00130"></a><span class="lineno">  130</span>            <span class="keywordflow">break</span>;</div>
    233. 

  233. <div class="line"><a id="l00131" name="l00131"></a><span class="lineno">  131</span>    }</div>
    234. 

  234. <div class="line"><a id="l00132" name="l00132"></a><span class="lineno">  132</span>}</div>
    235. 

  235. <div class="line"><a id="l00133" name="l00133"></a><span class="lineno">  133</span>NK_LIB <span class="keywordtype">float</span></div>
    236. 

  236. <div class="line"><a id="l00134" name="l00134"></a><span class="lineno">  134</span>nk_do_scrollbarv(nk_flags *state,</div>
    237. 

  237. <div class="line"><a id="l00135" name="l00135"></a><span class="lineno">  135</span>    <span class="keyword">struct</span> <a class="code hl_struct" href="structnk__command__buffer.html">nk_command_buffer</a> *out, <span class="keyword">struct</span> <a class="code hl_struct" href="structnk__rect.html">nk_rect</a> scroll, <span class="keywordtype">int</span> has_scrolling,</div>
    238. 

  238. <div class="line"><a id="l00136" name="l00136"></a><span class="lineno">  136</span>    <span class="keywordtype">float</span> offset, <span class="keywordtype">float</span> target, <span class="keywordtype">float</span> step, <span class="keywordtype">float</span> button_pixel_inc,</div>
    239. 

  239. <div class="line"><a id="l00137" name="l00137"></a><span class="lineno">  137</span>    <span class="keyword">const</span> <span class="keyword">struct</span> <a class="code hl_struct" href="structnk__style__scrollbar.html">nk_style_scrollbar</a> *style, <span class="keyword">struct</span> <a class="code hl_struct" href="structnk__input.html">nk_input</a> *in,</div>
    240. 

  240. <div class="line"><a id="l00138" name="l00138"></a><span class="lineno">  138</span>    <span class="keyword">const</span> <span class="keyword">struct</span> <a class="code hl_struct" href="structnk__user__font.html">nk_user_font</a> *font)</div>
    241. 

  241. <div class="line"><a id="l00139" name="l00139"></a><span class="lineno">  139</span>{</div>
    242. 

  242. <div class="line"><a id="l00140" name="l00140"></a><span class="lineno">  140</span>    <span class="keyword">struct </span><a class="code hl_struct" href="structnk__rect.html">nk_rect</a> empty_north;</div>
    243. 

  243. <div class="line"><a id="l00141" name="l00141"></a><span class="lineno">  141</span>    <span class="keyword">struct </span><a class="code hl_struct" href="structnk__rect.html">nk_rect</a> empty_south;</div>
    244. 

  244. <div class="line"><a id="l00142" name="l00142"></a><span class="lineno">  142</span>    <span class="keyword">struct </span><a class="code hl_struct" href="structnk__rect.html">nk_rect</a> cursor;</div>
    245. 

  245. <div class="line"><a id="l00143" name="l00143"></a><span class="lineno">  143</span> </div>
    246. 

  246. <div class="line"><a id="l00144" name="l00144"></a><span class="lineno">  144</span>    <span class="keywordtype">float</span> scroll_step;</div>
    247. 

  247. <div class="line"><a id="l00145" name="l00145"></a><span class="lineno">  145</span>    <span class="keywordtype">float</span> scroll_offset;</div>
    248. 

  248. <div class="line"><a id="l00146" name="l00146"></a><span class="lineno">  146</span>    <span class="keywordtype">float</span> scroll_off;</div>
    249. 

  249. <div class="line"><a id="l00147" name="l00147"></a><span class="lineno">  147</span>    <span class="keywordtype">float</span> scroll_ratio;</div>
    250. 

  250. <div class="line"><a id="l00148" name="l00148"></a><span class="lineno">  148</span> </div>
    251. 

  251. <div class="line"><a id="l00149" name="l00149"></a><span class="lineno">  149</span>    NK_ASSERT(out);</div>
    252. 

  252. <div class="line"><a id="l00150" name="l00150"></a><span class="lineno">  150</span>    NK_ASSERT(style);</div>
    253. 

  253. <div class="line"><a id="l00151" name="l00151"></a><span class="lineno">  151</span>    NK_ASSERT(state);</div>
    254. 

  254. <div class="line"><a id="l00152" name="l00152"></a><span class="lineno">  152</span>    <span class="keywordflow">if</span> (!out || !style) <span class="keywordflow">return</span> 0;</div>
    255. 

  255. <div class="line"><a id="l00153" name="l00153"></a><span class="lineno">  153</span> </div>
    256. 

  256. <div class="line"><a id="l00154" name="l00154"></a><span class="lineno">  154</span>    scroll.w = NK_MAX(scroll.w, 1);</div>
    257. 

  257. <div class="line"><a id="l00155" name="l00155"></a><span class="lineno">  155</span>    scroll.h = NK_MAX(scroll.h, 0);</div>
    258. 

  258. <div class="line"><a id="l00156" name="l00156"></a><span class="lineno">  156</span>    <span class="keywordflow">if</span> (target &lt;= scroll.h) <span class="keywordflow">return</span> 0;</div>
    259. 

  259. <div class="line"><a id="l00157" name="l00157"></a><span class="lineno">  157</span> </div>
    260. 

  260. <div class="line"><a id="l00158" name="l00158"></a><span class="lineno">  158</span>    <span class="comment">/* optional scrollbar buttons */</span></div>
    261. 

  261. <div class="line"><a id="l00159" name="l00159"></a><span class="lineno">  159</span>    <span class="keywordflow">if</span> (style-&gt;show_buttons) {</div>
    262. 

  262. <div class="line"><a id="l00160" name="l00160"></a><span class="lineno">  160</span>        nk_flags ws;</div>
    263. 

  263. <div class="line"><a id="l00161" name="l00161"></a><span class="lineno">  161</span>        <span class="keywordtype">float</span> scroll_h;</div>
    264. 

  264. <div class="line"><a id="l00162" name="l00162"></a><span class="lineno">  162</span>        <span class="keyword">struct </span><a class="code hl_struct" href="structnk__rect.html">nk_rect</a> button;</div>
    265. 

  265. <div class="line"><a id="l00163" name="l00163"></a><span class="lineno">  163</span> </div>
    266. 

  266. <div class="line"><a id="l00164" name="l00164"></a><span class="lineno">  164</span>        button.x = scroll.x;</div>
    267. 

  267. <div class="line"><a id="l00165" name="l00165"></a><span class="lineno">  165</span>        button.w = scroll.w;</div>
    268. 

  268. <div class="line"><a id="l00166" name="l00166"></a><span class="lineno">  166</span>        button.h = scroll.w;</div>
    269. 

  269. <div class="line"><a id="l00167" name="l00167"></a><span class="lineno">  167</span> </div>
    270. 

  270. <div class="line"><a id="l00168" name="l00168"></a><span class="lineno">  168</span>        scroll_h = NK_MAX(scroll.h - 2 * button.h,0);</div>
    271. 

  271. <div class="line"><a id="l00169" name="l00169"></a><span class="lineno">  169</span>        scroll_step = NK_MIN(step, button_pixel_inc);</div>
    272. 

  272. <div class="line"><a id="l00170" name="l00170"></a><span class="lineno">  170</span> </div>
    273. 

  273. <div class="line"><a id="l00171" name="l00171"></a><span class="lineno">  171</span>        <span class="comment">/* decrement button */</span></div>
    274. 

  274. <div class="line"><a id="l00172" name="l00172"></a><span class="lineno">  172</span>        button.y = scroll.y;</div>
    275. 

  275. <div class="line"><a id="l00173" name="l00173"></a><span class="lineno">  173</span>        <span class="keywordflow">if</span> (nk_do_button_symbol(&amp;ws, out, button, style-&gt;dec_symbol,</div>
    276. 

  276. <div class="line"><a id="l00174" name="l00174"></a><span class="lineno">  174</span>            NK_BUTTON_REPEATER, &amp;style-&gt;dec_button, in, font))</div>
    277. 

  277. <div class="line"><a id="l00175" name="l00175"></a><span class="lineno">  175</span>            offset = offset - scroll_step;</div>
    278. 

  278. <div class="line"><a id="l00176" name="l00176"></a><span class="lineno">  176</span> </div>
    279. 

  279. <div class="line"><a id="l00177" name="l00177"></a><span class="lineno">  177</span>        <span class="comment">/* increment button */</span></div>
    280. 

  280. <div class="line"><a id="l00178" name="l00178"></a><span class="lineno">  178</span>        button.y = scroll.y + scroll.h - button.h;</div>
    281. 

  281. <div class="line"><a id="l00179" name="l00179"></a><span class="lineno">  179</span>        <span class="keywordflow">if</span> (nk_do_button_symbol(&amp;ws, out, button, style-&gt;inc_symbol,</div>
    282. 

  282. <div class="line"><a id="l00180" name="l00180"></a><span class="lineno">  180</span>            NK_BUTTON_REPEATER, &amp;style-&gt;inc_button, in, font))</div>
    283. 

  283. <div class="line"><a id="l00181" name="l00181"></a><span class="lineno">  181</span>            offset = offset + scroll_step;</div>
    284. 

  284. <div class="line"><a id="l00182" name="l00182"></a><span class="lineno">  182</span> </div>
    285. 

  285. <div class="line"><a id="l00183" name="l00183"></a><span class="lineno">  183</span>        scroll.y = scroll.y + button.h;</div>
    286. 

  286. <div class="line"><a id="l00184" name="l00184"></a><span class="lineno">  184</span>        scroll.h = scroll_h;</div>
    287. 

  287. <div class="line"><a id="l00185" name="l00185"></a><span class="lineno">  185</span>    }</div>
    288. 

  288. <div class="line"><a id="l00186" name="l00186"></a><span class="lineno">  186</span> </div>
    289. 

  289. <div class="line"><a id="l00187" name="l00187"></a><span class="lineno">  187</span>    <span class="comment">/* calculate scrollbar constants */</span></div>
    290. 

  290. <div class="line"><a id="l00188" name="l00188"></a><span class="lineno">  188</span>    scroll_step = NK_MIN(step, scroll.h);</div>
    291. 

  291. <div class="line"><a id="l00189" name="l00189"></a><span class="lineno">  189</span>    scroll_offset = NK_CLAMP(0, offset, target - scroll.h);</div>
    292. 

  292. <div class="line"><a id="l00190" name="l00190"></a><span class="lineno">  190</span>    scroll_ratio = scroll.h / target;</div>
    293. 

  293. <div class="line"><a id="l00191" name="l00191"></a><span class="lineno">  191</span>    scroll_off = scroll_offset / target;</div>
    294. 

  294. <div class="line"><a id="l00192" name="l00192"></a><span class="lineno">  192</span> </div>
    295. 

  295. <div class="line"><a id="l00193" name="l00193"></a><span class="lineno">  193</span>    <span class="comment">/* calculate scrollbar cursor bounds */</span></div>
    296. 

  296. <div class="line"><a id="l00194" name="l00194"></a><span class="lineno">  194</span>    cursor.h = NK_MAX((scroll_ratio * scroll.h) - (2*style-&gt;border + 2*style-&gt;padding.y), 0);</div>
    297. 

  297. <div class="line"><a id="l00195" name="l00195"></a><span class="lineno">  195</span>    cursor.y = scroll.y + (scroll_off * scroll.h) + style-&gt;border + style-&gt;padding.y;</div>
    298. 

  298. <div class="line"><a id="l00196" name="l00196"></a><span class="lineno">  196</span>    cursor.w = scroll.w - (2 * style-&gt;border + 2 * style-&gt;padding.x);</div>
    299. 

  299. <div class="line"><a id="l00197" name="l00197"></a><span class="lineno">  197</span>    cursor.x = scroll.x + style-&gt;border + style-&gt;padding.x;</div>
    300. 

  300. <div class="line"><a id="l00198" name="l00198"></a><span class="lineno">  198</span> </div>
    301. 

  301. <div class="line"><a id="l00199" name="l00199"></a><span class="lineno">  199</span>    <span class="comment">/* calculate empty space around cursor */</span></div>
    302. 

  302. <div class="line"><a id="l00200" name="l00200"></a><span class="lineno">  200</span>    empty_north.x = scroll.x;</div>
    303. 

  303. <div class="line"><a id="l00201" name="l00201"></a><span class="lineno">  201</span>    empty_north.y = scroll.y;</div>
    304. 

  304. <div class="line"><a id="l00202" name="l00202"></a><span class="lineno">  202</span>    empty_north.w = scroll.w;</div>
    305. 

  305. <div class="line"><a id="l00203" name="l00203"></a><span class="lineno">  203</span>    empty_north.h = NK_MAX(cursor.y - scroll.y, 0);</div>
    306. 

  306. <div class="line"><a id="l00204" name="l00204"></a><span class="lineno">  204</span> </div>
    307. 

  307. <div class="line"><a id="l00205" name="l00205"></a><span class="lineno">  205</span>    empty_south.x = scroll.x;</div>
    308. 

  308. <div class="line"><a id="l00206" name="l00206"></a><span class="lineno">  206</span>    empty_south.y = cursor.y + cursor.h;</div>
    309. 

  309. <div class="line"><a id="l00207" name="l00207"></a><span class="lineno">  207</span>    empty_south.w = scroll.w;</div>
    310. 

  310. <div class="line"><a id="l00208" name="l00208"></a><span class="lineno">  208</span>    empty_south.h = NK_MAX((scroll.y + scroll.h) - (cursor.y + cursor.h), 0);</div>
    311. 

  311. <div class="line"><a id="l00209" name="l00209"></a><span class="lineno">  209</span> </div>
    312. 

  312. <div class="line"><a id="l00210" name="l00210"></a><span class="lineno">  210</span>    <span class="comment">/* update scrollbar */</span></div>
    313. 

  313. <div class="line"><a id="l00211" name="l00211"></a><span class="lineno">  211</span>    scroll_offset = nk_scrollbar_behavior(state, in, has_scrolling, &amp;scroll, &amp;cursor,</div>
    314. 

  314. <div class="line"><a id="l00212" name="l00212"></a><span class="lineno">  212</span>        &amp;empty_north, &amp;empty_south, scroll_offset, target, scroll_step, NK_VERTICAL);</div>
    315. 

  315. <div class="line"><a id="l00213" name="l00213"></a><span class="lineno">  213</span>    scroll_off = scroll_offset / target;</div>
    316. 

  316. <div class="line"><a id="l00214" name="l00214"></a><span class="lineno">  214</span>    cursor.y = scroll.y + (scroll_off * scroll.h) + style-&gt;border_cursor + style-&gt;padding.y;</div>
    317. 

  317. <div class="line"><a id="l00215" name="l00215"></a><span class="lineno">  215</span> </div>
    318. 

  318. <div class="line"><a id="l00216" name="l00216"></a><span class="lineno">  216</span>    <span class="comment">/* draw scrollbar */</span></div>
    319. 

  319. <div class="line"><a id="l00217" name="l00217"></a><span class="lineno">  217</span>    <span class="keywordflow">if</span> (style-&gt;draw_begin) style-&gt;draw_begin(out, style-&gt;userdata);</div>
    320. 

  320. <div class="line"><a id="l00218" name="l00218"></a><span class="lineno">  218</span>    nk_draw_scrollbar(out, *state, style, &amp;scroll, &amp;cursor);</div>
    321. 

  321. <div class="line"><a id="l00219" name="l00219"></a><span class="lineno">  219</span>    <span class="keywordflow">if</span> (style-&gt;draw_end) style-&gt;draw_end(out, style-&gt;userdata);</div>
    322. 

  322. <div class="line"><a id="l00220" name="l00220"></a><span class="lineno">  220</span>    <span class="keywordflow">return</span> scroll_offset;</div>
    323. 

  323. <div class="line"><a id="l00221" name="l00221"></a><span class="lineno">  221</span>}</div>
    324. 

  324. <div class="line"><a id="l00222" name="l00222"></a><span class="lineno">  222</span>NK_LIB <span class="keywordtype">float</span></div>
    325. 

  325. <div class="line"><a id="l00223" name="l00223"></a><span class="lineno">  223</span>nk_do_scrollbarh(nk_flags *state,</div>
    326. 

  326. <div class="line"><a id="l00224" name="l00224"></a><span class="lineno">  224</span>    <span class="keyword">struct</span> <a class="code hl_struct" href="structnk__command__buffer.html">nk_command_buffer</a> *out, <span class="keyword">struct</span> <a class="code hl_struct" href="structnk__rect.html">nk_rect</a> scroll, <span class="keywordtype">int</span> has_scrolling,</div>
    327. 

  327. <div class="line"><a id="l00225" name="l00225"></a><span class="lineno">  225</span>    <span class="keywordtype">float</span> offset, <span class="keywordtype">float</span> target, <span class="keywordtype">float</span> step, <span class="keywordtype">float</span> button_pixel_inc,</div>
    328. 

  328. <div class="line"><a id="l00226" name="l00226"></a><span class="lineno">  226</span>    <span class="keyword">const</span> <span class="keyword">struct</span> <a class="code hl_struct" href="structnk__style__scrollbar.html">nk_style_scrollbar</a> *style, <span class="keyword">struct</span> <a class="code hl_struct" href="structnk__input.html">nk_input</a> *in,</div>
    329. 

  329. <div class="line"><a id="l00227" name="l00227"></a><span class="lineno">  227</span>    <span class="keyword">const</span> <span class="keyword">struct</span> <a class="code hl_struct" href="structnk__user__font.html">nk_user_font</a> *font)</div>
    330. 

  330. <div class="line"><a id="l00228" name="l00228"></a><span class="lineno">  228</span>{</div>
    331. 

  331. <div class="line"><a id="l00229" name="l00229"></a><span class="lineno">  229</span>    <span class="keyword">struct </span><a class="code hl_struct" href="structnk__rect.html">nk_rect</a> cursor;</div>
    332. 

  332. <div class="line"><a id="l00230" name="l00230"></a><span class="lineno">  230</span>    <span class="keyword">struct </span><a class="code hl_struct" href="structnk__rect.html">nk_rect</a> empty_west;</div>
    333. 

  333. <div class="line"><a id="l00231" name="l00231"></a><span class="lineno">  231</span>    <span class="keyword">struct </span><a class="code hl_struct" href="structnk__rect.html">nk_rect</a> empty_east;</div>
    334. 

  334. <div class="line"><a id="l00232" name="l00232"></a><span class="lineno">  232</span> </div>
    335. 

  335. <div class="line"><a id="l00233" name="l00233"></a><span class="lineno">  233</span>    <span class="keywordtype">float</span> scroll_step;</div>
    336. 

  336. <div class="line"><a id="l00234" name="l00234"></a><span class="lineno">  234</span>    <span class="keywordtype">float</span> scroll_offset;</div>
    337. 

  337. <div class="line"><a id="l00235" name="l00235"></a><span class="lineno">  235</span>    <span class="keywordtype">float</span> scroll_off;</div>
    338. 

  338. <div class="line"><a id="l00236" name="l00236"></a><span class="lineno">  236</span>    <span class="keywordtype">float</span> scroll_ratio;</div>
    339. 

  339. <div class="line"><a id="l00237" name="l00237"></a><span class="lineno">  237</span> </div>
    340. 

  340. <div class="line"><a id="l00238" name="l00238"></a><span class="lineno">  238</span>    NK_ASSERT(out);</div>
    341. 

  341. <div class="line"><a id="l00239" name="l00239"></a><span class="lineno">  239</span>    NK_ASSERT(style);</div>
    342. 

  342. <div class="line"><a id="l00240" name="l00240"></a><span class="lineno">  240</span>    <span class="keywordflow">if</span> (!out || !style) <span class="keywordflow">return</span> 0;</div>
    343. 

  343. <div class="line"><a id="l00241" name="l00241"></a><span class="lineno">  241</span> </div>
    344. 

  344. <div class="line"><a id="l00242" name="l00242"></a><span class="lineno">  242</span>    <span class="comment">/* scrollbar background */</span></div>
    345. 

  345. <div class="line"><a id="l00243" name="l00243"></a><span class="lineno">  243</span>    scroll.h = NK_MAX(scroll.h, 1);</div>
    346. 

  346. <div class="line"><a id="l00244" name="l00244"></a><span class="lineno">  244</span>    scroll.w = NK_MAX(scroll.w, 2 * scroll.h);</div>
    347. 

  347. <div class="line"><a id="l00245" name="l00245"></a><span class="lineno">  245</span>    <span class="keywordflow">if</span> (target &lt;= scroll.w) <span class="keywordflow">return</span> 0;</div>
    348. 

  348. <div class="line"><a id="l00246" name="l00246"></a><span class="lineno">  246</span> </div>
    349. 

  349. <div class="line"><a id="l00247" name="l00247"></a><span class="lineno">  247</span>    <span class="comment">/* optional scrollbar buttons */</span></div>
    350. 

  350. <div class="line"><a id="l00248" name="l00248"></a><span class="lineno">  248</span>    <span class="keywordflow">if</span> (style-&gt;show_buttons) {</div>
    351. 

  351. <div class="line"><a id="l00249" name="l00249"></a><span class="lineno">  249</span>        nk_flags ws;</div>
    352. 

  352. <div class="line"><a id="l00250" name="l00250"></a><span class="lineno">  250</span>        <span class="keywordtype">float</span> scroll_w;</div>
    353. 

  353. <div class="line"><a id="l00251" name="l00251"></a><span class="lineno">  251</span>        <span class="keyword">struct </span><a class="code hl_struct" href="structnk__rect.html">nk_rect</a> button;</div>
    354. 

  354. <div class="line"><a id="l00252" name="l00252"></a><span class="lineno">  252</span>        button.y = scroll.y;</div>
    355. 

  355. <div class="line"><a id="l00253" name="l00253"></a><span class="lineno">  253</span>        button.w = scroll.h;</div>
    356. 

  356. <div class="line"><a id="l00254" name="l00254"></a><span class="lineno">  254</span>        button.h = scroll.h;</div>
    357. 

  357. <div class="line"><a id="l00255" name="l00255"></a><span class="lineno">  255</span> </div>
    358. 

  358. <div class="line"><a id="l00256" name="l00256"></a><span class="lineno">  256</span>        scroll_w = scroll.w - 2 * button.w;</div>
    359. 

  359. <div class="line"><a id="l00257" name="l00257"></a><span class="lineno">  257</span>        scroll_step = NK_MIN(step, button_pixel_inc);</div>
    360. 

  360. <div class="line"><a id="l00258" name="l00258"></a><span class="lineno">  258</span> </div>
    361. 

  361. <div class="line"><a id="l00259" name="l00259"></a><span class="lineno">  259</span>        <span class="comment">/* decrement button */</span></div>
    362. 

  362. <div class="line"><a id="l00260" name="l00260"></a><span class="lineno">  260</span>        button.x = scroll.x;</div>
    363. 

  363. <div class="line"><a id="l00261" name="l00261"></a><span class="lineno">  261</span>        <span class="keywordflow">if</span> (nk_do_button_symbol(&amp;ws, out, button, style-&gt;dec_symbol,</div>
    364. 

  364. <div class="line"><a id="l00262" name="l00262"></a><span class="lineno">  262</span>            NK_BUTTON_REPEATER, &amp;style-&gt;dec_button, in, font))</div>
    365. 

  365. <div class="line"><a id="l00263" name="l00263"></a><span class="lineno">  263</span>            offset = offset - scroll_step;</div>
    366. 

  366. <div class="line"><a id="l00264" name="l00264"></a><span class="lineno">  264</span> </div>
    367. 

  367. <div class="line"><a id="l00265" name="l00265"></a><span class="lineno">  265</span>        <span class="comment">/* increment button */</span></div>
    368. 

  368. <div class="line"><a id="l00266" name="l00266"></a><span class="lineno">  266</span>        button.x = scroll.x + scroll.w - button.w;</div>
    369. 

  369. <div class="line"><a id="l00267" name="l00267"></a><span class="lineno">  267</span>        <span class="keywordflow">if</span> (nk_do_button_symbol(&amp;ws, out, button, style-&gt;inc_symbol,</div>
    370. 

  370. <div class="line"><a id="l00268" name="l00268"></a><span class="lineno">  268</span>            NK_BUTTON_REPEATER, &amp;style-&gt;inc_button, in, font))</div>
    371. 

  371. <div class="line"><a id="l00269" name="l00269"></a><span class="lineno">  269</span>            offset = offset + scroll_step;</div>
    372. 

  372. <div class="line"><a id="l00270" name="l00270"></a><span class="lineno">  270</span> </div>
    373. 

  373. <div class="line"><a id="l00271" name="l00271"></a><span class="lineno">  271</span>        scroll.x = scroll.x + button.w;</div>
    374. 

  374. <div class="line"><a id="l00272" name="l00272"></a><span class="lineno">  272</span>        scroll.w = scroll_w;</div>
    375. 

  375. <div class="line"><a id="l00273" name="l00273"></a><span class="lineno">  273</span>    }</div>
    376. 

  376. <div class="line"><a id="l00274" name="l00274"></a><span class="lineno">  274</span> </div>
    377. 

  377. <div class="line"><a id="l00275" name="l00275"></a><span class="lineno">  275</span>    <span class="comment">/* calculate scrollbar constants */</span></div>
    378. 

  378. <div class="line"><a id="l00276" name="l00276"></a><span class="lineno">  276</span>    scroll_step = NK_MIN(step, scroll.w);</div>
    379. 

  379. <div class="line"><a id="l00277" name="l00277"></a><span class="lineno">  277</span>    scroll_offset = NK_CLAMP(0, offset, target - scroll.w);</div>
    380. 

  380. <div class="line"><a id="l00278" name="l00278"></a><span class="lineno">  278</span>    scroll_ratio = scroll.w / target;</div>
    381. 

  381. <div class="line"><a id="l00279" name="l00279"></a><span class="lineno">  279</span>    scroll_off = scroll_offset / target;</div>
    382. 

  382. <div class="line"><a id="l00280" name="l00280"></a><span class="lineno">  280</span> </div>
    383. 

  383. <div class="line"><a id="l00281" name="l00281"></a><span class="lineno">  281</span>    <span class="comment">/* calculate cursor bounds */</span></div>
    384. 

  384. <div class="line"><a id="l00282" name="l00282"></a><span class="lineno">  282</span>    cursor.w = (scroll_ratio * scroll.w) - (2*style-&gt;border + 2*style-&gt;padding.x);</div>
    385. 

  385. <div class="line"><a id="l00283" name="l00283"></a><span class="lineno">  283</span>    cursor.x = scroll.x + (scroll_off * scroll.w) + style-&gt;border + style-&gt;padding.x;</div>
    386. 

  386. <div class="line"><a id="l00284" name="l00284"></a><span class="lineno">  284</span>    cursor.h = scroll.h - (2 * style-&gt;border + 2 * style-&gt;padding.y);</div>
    387. 

  387. <div class="line"><a id="l00285" name="l00285"></a><span class="lineno">  285</span>    cursor.y = scroll.y + style-&gt;border + style-&gt;padding.y;</div>
    388. 

  388. <div class="line"><a id="l00286" name="l00286"></a><span class="lineno">  286</span> </div>
    389. 

  389. <div class="line"><a id="l00287" name="l00287"></a><span class="lineno">  287</span>    <span class="comment">/* calculate empty space around cursor */</span></div>
    390. 

  390. <div class="line"><a id="l00288" name="l00288"></a><span class="lineno">  288</span>    empty_west.x = scroll.x;</div>
    391. 

  391. <div class="line"><a id="l00289" name="l00289"></a><span class="lineno">  289</span>    empty_west.y = scroll.y;</div>
    392. 

  392. <div class="line"><a id="l00290" name="l00290"></a><span class="lineno">  290</span>    empty_west.w = cursor.x - scroll.x;</div>
    393. 

  393. <div class="line"><a id="l00291" name="l00291"></a><span class="lineno">  291</span>    empty_west.h = scroll.h;</div>
    394. 

  394. <div class="line"><a id="l00292" name="l00292"></a><span class="lineno">  292</span> </div>
    395. 

  395. <div class="line"><a id="l00293" name="l00293"></a><span class="lineno">  293</span>    empty_east.x = cursor.x + cursor.w;</div>
    396. 

  396. <div class="line"><a id="l00294" name="l00294"></a><span class="lineno">  294</span>    empty_east.y = scroll.y;</div>
    397. 

  397. <div class="line"><a id="l00295" name="l00295"></a><span class="lineno">  295</span>    empty_east.w = (scroll.x + scroll.w) - (cursor.x + cursor.w);</div>
    398. 

  398. <div class="line"><a id="l00296" name="l00296"></a><span class="lineno">  296</span>    empty_east.h = scroll.h;</div>
    399. 

  399. <div class="line"><a id="l00297" name="l00297"></a><span class="lineno">  297</span> </div>
    400. 

  400. <div class="line"><a id="l00298" name="l00298"></a><span class="lineno">  298</span>    <span class="comment">/* update scrollbar */</span></div>
    401. 

  401. <div class="line"><a id="l00299" name="l00299"></a><span class="lineno">  299</span>    scroll_offset = nk_scrollbar_behavior(state, in, has_scrolling, &amp;scroll, &amp;cursor,</div>
    402. 

  402. <div class="line"><a id="l00300" name="l00300"></a><span class="lineno">  300</span>        &amp;empty_west, &amp;empty_east, scroll_offset, target, scroll_step, NK_HORIZONTAL);</div>
    403. 

  403. <div class="line"><a id="l00301" name="l00301"></a><span class="lineno">  301</span>    scroll_off = scroll_offset / target;</div>
    404. 

  404. <div class="line"><a id="l00302" name="l00302"></a><span class="lineno">  302</span>    cursor.x = scroll.x + (scroll_off * scroll.w);</div>
    405. 

  405. <div class="line"><a id="l00303" name="l00303"></a><span class="lineno">  303</span> </div>
    406. 

  406. <div class="line"><a id="l00304" name="l00304"></a><span class="lineno">  304</span>    <span class="comment">/* draw scrollbar */</span></div>
    407. 

  407. <div class="line"><a id="l00305" name="l00305"></a><span class="lineno">  305</span>    <span class="keywordflow">if</span> (style-&gt;draw_begin) style-&gt;draw_begin(out, style-&gt;userdata);</div>
    408. 

  408. <div class="line"><a id="l00306" name="l00306"></a><span class="lineno">  306</span>    nk_draw_scrollbar(out, *state, style, &amp;scroll, &amp;cursor);</div>
    409. 

  409. <div class="line"><a id="l00307" name="l00307"></a><span class="lineno">  307</span>    <span class="keywordflow">if</span> (style-&gt;draw_end) style-&gt;draw_end(out, style-&gt;userdata);</div>
    410. 

  410. <div class="line"><a id="l00308" name="l00308"></a><span class="lineno">  308</span>    <span class="keywordflow">return</span> scroll_offset;</div>
    411. 

  411. <div class="line"><a id="l00309" name="l00309"></a><span class="lineno">  309</span>}</div>
    412. 

  412. <div class="line"><a id="l00310" name="l00310"></a><span class="lineno">  310</span> </div>
    413. 

  413. <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>
    414. 

  414. <div class="ttc" id="anuklear_8h_html_a322678fb670fa1d061dbed321ee38d1b"><div class="ttname"><a href="nuklear_8h.html#a322678fb670fa1d061dbed321ee38d1b">nk_draw_image</a></div><div class="ttdeci">NK_API void nk_draw_image(struct nk_command_buffer *, struct nk_rect, const struct nk_image *, struct nk_color)</div><div class="ttdoc">misc</div><div class="ttdef"><b>Definition</b> <a href="nuklear__draw_8c_source.html#l00395">nuklear_draw.c:395</a></div></div>
    415. 

  415. <div class="ttc" id="anuklear_8h_html_a63407f682d240622d8b025d7911596fb"><div class="ttname"><a href="nuklear_8h.html#a63407f682d240622d8b025d7911596fb">nk_fill_rect</a></div><div class="ttdeci">NK_API void nk_fill_rect(struct nk_command_buffer *, struct nk_rect, float rounding, struct nk_color)</div><div class="ttdoc">filled shades</div><div class="ttdef"><b>Definition</b> <a href="nuklear__draw_8c_source.html#l00152">nuklear_draw.c:152</a></div></div>
    416. 

  416. <div class="ttc" id="anuklear_8h_html_a894de85b018e1e285053f71b6c9943eca2fb9071f1785d3bd24e5b2d3c54fadc6"><div class="ttname"><a href="nuklear_8h.html#a894de85b018e1e285053f71b6c9943eca2fb9071f1785d3bd24e5b2d3c54fadc6">NK_WIDGET_STATE_LEFT</a></div><div class="ttdeci">@ NK_WIDGET_STATE_LEFT</div><div class="ttdoc">!&lt; widget is currently activated</div><div class="ttdef"><b>Definition</b> <a href="nuklear_8h_source.html#l03093">nuklear.h:3093</a></div></div>
    417. 

  417. <div class="ttc" id="anuklear_8h_html_a894de85b018e1e285053f71b6c9943eca50500d1a5679bdcea512b954f2166861"><div class="ttname"><a href="nuklear_8h.html#a894de85b018e1e285053f71b6c9943eca50500d1a5679bdcea512b954f2166861">NK_WIDGET_STATE_ACTIVED</a></div><div class="ttdeci">@ NK_WIDGET_STATE_ACTIVED</div><div class="ttdoc">!&lt; widget is being hovered</div><div class="ttdef"><b>Definition</b> <a href="nuklear_8h_source.html#l03092">nuklear.h:3092</a></div></div>
    418. 

  418. <div class="ttc" id="anuklear_8h_html_a894de85b018e1e285053f71b6c9943eca65255dbe033baa60268dc401e4648be4"><div class="ttname"><a href="nuklear_8h.html#a894de85b018e1e285053f71b6c9943eca65255dbe033baa60268dc401e4648be4">NK_WIDGET_STATE_ENTERED</a></div><div class="ttdeci">@ NK_WIDGET_STATE_ENTERED</div><div class="ttdoc">!&lt; widget is neither active nor hovered</div><div class="ttdef"><b>Definition</b> <a href="nuklear_8h_source.html#l03090">nuklear.h:3090</a></div></div>
    419. 

  419. <div class="ttc" id="anuklear_8h_html_a894de85b018e1e285053f71b6c9943eca87f536ff0af612d2ac85e586780208f9"><div class="ttname"><a href="nuklear_8h.html#a894de85b018e1e285053f71b6c9943eca87f536ff0af612d2ac85e586780208f9">NK_WIDGET_STATE_HOVER</a></div><div class="ttdeci">@ NK_WIDGET_STATE_HOVER</div><div class="ttdoc">!&lt; widget has been hovered on the current frame</div><div class="ttdef"><b>Definition</b> <a href="nuklear_8h_source.html#l03091">nuklear.h:3091</a></div></div>
    420. 

  420. <div class="ttc" id="anuklear_8h_html_a894de85b018e1e285053f71b6c9943ecac98cceb386b40c1fd53c0e3767981d72"><div class="ttname"><a href="nuklear_8h.html#a894de85b018e1e285053f71b6c9943ecac98cceb386b40c1fd53c0e3767981d72">NK_WIDGET_STATE_ACTIVE</a></div><div class="ttdeci">@ NK_WIDGET_STATE_ACTIVE</div><div class="ttdoc">!&lt; widget is being hovered</div><div class="ttdef"><b>Definition</b> <a href="nuklear_8h_source.html#l03096">nuklear.h:3095</a></div></div>
    421. 

  421. <div class="ttc" id="anuklear_8h_html_a894de85b018e1e285053f71b6c9943ecacce4016e3b9a1f21434caa9180d3e71a"><div class="ttname"><a href="nuklear_8h.html#a894de85b018e1e285053f71b6c9943ecacce4016e3b9a1f21434caa9180d3e71a">NK_WIDGET_STATE_HOVERED</a></div><div class="ttdeci">@ NK_WIDGET_STATE_HOVERED</div><div class="ttdoc">!&lt; widget is from this frame on not hovered anymore</div><div class="ttdef"><b>Definition</b> <a href="nuklear_8h_source.html#l03094">nuklear.h:3094</a></div></div>
    422. 

  422. <div class="ttc" id="astructnk__command__buffer_html"><div class="ttname"><a href="structnk__command__buffer.html">nk_command_buffer</a></div><div class="ttdef"><b>Definition</b> <a href="nuklear_8h_source.html#l04632">nuklear.h:4632</a></div></div>
    423. 

  423. <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>
    424. 

  424. <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>
    425. 

  425. <div class="ttc" id="astructnk__style__item_html"><div class="ttname"><a href="structnk__style__item.html">nk_style_item</a></div><div class="ttdef"><b>Definition</b> <a href="nuklear_8h_source.html#l04891">nuklear.h:4891</a></div></div>
    426. 

  426. <div class="ttc" id="astructnk__style__scrollbar_html"><div class="ttname"><a href="structnk__style__scrollbar.html">nk_style_scrollbar</a></div><div class="ttdef"><b>Definition</b> <a href="nuklear_8h_source.html#l05104">nuklear.h:5104</a></div></div>
    427. 

  427. <div class="ttc" id="astructnk__user__font_html"><div class="ttname"><a href="structnk__user__font.html">nk_user_font</a></div><div class="ttdef"><b>Definition</b> <a href="nuklear_8h_source.html#l04006">nuklear.h:4006</a></div></div>
    428. 

  428. </div><!-- fragment --></div><!-- contents -->
    429. 

  429. </div><!-- doc-content -->
    430. 

  430. <!-- start footer part -->
    431. 

  431. <div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
    432. 

  432.   <ul>
    433. 

  433.     <li class="navelem"><a class="el" href="dir_68267d1309a1af8e8297ef4c3efbcdba.html">src</a></li><li class="navelem"><b>nuklear_scrollbar.c</b></li>
    434. 

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    439.