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<title>Zibra Effects: Assets/Plugins/Zibra/Common/Editor/UI/UIToolkit/Controls/LoadingSpinner/LoadingSpinner.cs Source File</title>
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  <div class="headertitle"><div class="title">LoadingSpinner.cs</div></div>
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<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno">    1</span><span class="preprocessor">#if UNITY_2019_4_OR_NEWER</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno">    2</span><span class="keyword">using </span>com.zibra.liquid.Foundation.Editor;</div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno">    3</span><span class="keyword">using </span>JetBrains.Annotations;</div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno">    4</span><span class="keyword">using </span>UnityEngine;</div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno">    5</span><span class="keyword">using </span>UnityEngine.UIElements;</div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno">    6</span> </div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno">    7</span><span class="keyword">namespace </span>com.zibra.liquid.Foundation.UIElements</div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno">    8</span>{</div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno">   12</span>    <span class="keyword">internal</span> sealed <span class="keyword">class </span>LoadingSpinner : VisualElement</div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno">   13</span>    {</div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno">   14</span>        [UsedImplicitly]</div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno">   15</span>        <span class="keyword">internal</span> <span class="keyword">new</span> <span class="keyword">class </span>UxmlFactory : UxmlFactory&lt;LoadingSpinner, UxmlTraits&gt;</div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno">   16</span>        {</div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno">   17</span>        }</div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno">   18</span> </div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno">   19</span>        <span class="keyword">internal</span> <span class="keyword">new</span> <span class="keyword">class </span>UxmlTraits : BindableElement.UxmlTraits {}</div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno">   20</span> </div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno">   21</span>        <span class="keyword">private</span> <span class="keywordtype">bool</span> m_IsActive;</div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno">   22</span>        <span class="keyword">private</span> <span class="keywordtype">int</span> m_RotationAngle;</div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno">   23</span> </div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno">   24</span>        <span class="keyword">private</span> readonly IVisualElementScheduledItem m_ScheduledUpdate;</div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno">   25</span> </div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno">   26</span>        <span class="keyword">private</span> <span class="keyword">const</span> <span class="keywordtype">long</span> k_RotationUpdateInterval = 1L;</div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno">   27</span>        <span class="keyword">private</span> <span class="keyword">const</span> <span class="keywordtype">int</span> k_RotationAngleDelta = 10;</div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno">   28</span> </div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno">   32</span>        <span class="keyword">internal</span> <span class="keyword">const</span> <span class="keywordtype">string</span> UssClassName = <span class="stringliteral">&quot;zibraai-loading-spinner&quot;</span>;</div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno">   33</span> </div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno">   37</span>        <span class="keyword">public</span> LoadingSpinner()</div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno">   38</span>        {</div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno">   39</span>            AddToClassList(UssClassName);</div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno">   40</span>            UIToolkitEditorUtility.ApplyStyleForInternalControl(<span class="keyword">this</span>, nameof(LoadingSpinner));</div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno">   41</span>            m_IsActive = <span class="keyword">false</span>;</div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno">   42</span> </div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno">   43</span>            <span class="comment">// add child elements to set up centered spinner rotation</span></div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno">   44</span>            var innerElement = <span class="keyword">new</span> VisualElement();</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno">   45</span>            innerElement.AddToClassList(<span class="stringliteral">&quot;image&quot;</span>);</div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno">   46</span>            Add(innerElement);</div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno">   47</span> </div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno">   48</span>            m_ScheduledUpdate = schedule.Execute(UpdateProgress).Every(k_RotationUpdateInterval);</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno">   49</span>            m_ScheduledUpdate.Pause();</div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno">   50</span> </div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno">   51</span>            RegisterCallback&lt;AttachToPanelEvent&gt;(OnAttachToPanelEventHandler, TrickleDown.TrickleDown);</div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno">   52</span>            RegisterCallback&lt;DetachFromPanelEvent&gt;(OnDetachFromPanelEventHandler, TrickleDown.TrickleDown);</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno">   53</span>        }</div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno">   54</span> </div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno">   55</span>        <span class="keyword">private</span> <span class="keywordtype">void</span> OnAttachToPanelEventHandler(AttachToPanelEvent e)</div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno">   56</span>        {</div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno">   57</span>            Activate();</div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno">   58</span>        }</div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno">   59</span> </div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno">   60</span>        <span class="keyword">private</span> <span class="keywordtype">void</span> OnDetachFromPanelEventHandler(DetachFromPanelEvent e)</div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno">   61</span>        {</div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno">   62</span>            Deactivate();</div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno">   63</span>        }</div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno">   64</span> </div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno">   65</span>        <span class="keyword">private</span> <span class="keywordtype">void</span> UpdateProgress()</div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno">   66</span>        {</div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno">   67</span>            transform.rotation = Quaternion.Euler(0, 0, m_RotationAngle);</div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno">   68</span>            m_RotationAngle += k_RotationAngleDelta;</div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno">   69</span>            <span class="keywordflow">if</span> (m_RotationAngle &gt; 360)</div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno">   70</span>                m_RotationAngle -= 360;</div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno">   71</span>        }</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno">   72</span> </div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno">   73</span>        <span class="keyword">private</span> <span class="keywordtype">void</span> Activate()</div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno">   74</span>        {</div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno">   75</span>            <span class="keywordflow">if</span> (m_IsActive)</div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno">   76</span>                <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno">   77</span> </div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno">   78</span>            m_RotationAngle = 0;</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno">   79</span>            m_ScheduledUpdate.Resume();</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno">   80</span> </div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno">   81</span>            m_IsActive = <span class="keyword">true</span>;</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno">   82</span>        }</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno">   83</span> </div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno">   84</span>        <span class="keyword">private</span> <span class="keywordtype">void</span> Deactivate()</div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno">   85</span>        {</div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno">   86</span>            <span class="keywordflow">if</span> (!m_IsActive)</div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno">   87</span>                <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno">   88</span> </div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno">   89</span>            m_ScheduledUpdate.Pause();</div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno">   90</span> </div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno">   91</span>            m_IsActive = <span class="keyword">false</span>;</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno">   92</span>        }</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno">   93</span>    }</div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno">   94</span>}</div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno">   95</span><span class="preprocessor">#endif</span></div>
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