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<title>ControlListener (Javadocs: controlP5)</title>
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<div class="subTitle">controlP5</div>
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<h2 title="Interface ControlListener" class="title">Interface ControlListener</h2>
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<dl>
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<dt>All Known Implementing Classes:</dt>
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<dd><a href="../controlP5/Accordion.html" title="class in controlP5">Accordion</a>, <a href="../controlP5/CheckBox.html" title="class in controlP5">CheckBox</a>, <a href="../controlP5/ColorPicker.html" title="class in controlP5">ColorPicker</a>, <a href="../controlP5/ControlGroup.html" title="class in controlP5">ControlGroup</a>, <a href="../controlP5/ControllerGroup.html" title="class in controlP5">ControllerGroup</a>, <a href="../controlP5/DropdownList.html" title="class in controlP5">DropdownList</a>, <a href="../controlP5/Group.html" title="class in controlP5">Group</a>, <a href="../controlP5/ListBox.html" title="class in controlP5">ListBox</a>, <a href="../controlP5/MultiList.html" title="class in controlP5">MultiList</a>, <a href="../controlP5/Radio.html" title="class in controlP5">Radio</a>, <a href="../controlP5/RadioButton.html" title="class in controlP5">RadioButton</a>, <a href="../controlP5/ScrollableList.html" title="class in controlP5">ScrollableList</a>, <a href="../controlP5/Tab.html" title="class in controlP5">Tab</a>, <a href="../controlP5/Textarea.html" title="class in controlP5">Textarea</a></dd>
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</dl>
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<hr>
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<br>
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<pre>public interface <span class="strong">ControlListener</span></pre>
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<div class="block">ControlListener is an interface that can be implemented by a custom class to be notified when
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controller values change. To add a ControlListener to a controller use Controller.addListner()</div>
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<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../controlP5/Controller.html#addListener(controlP5.ControlListener)"><code>Controller.addListener(ControlListener)</code></a>,
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<a href="../controlP5/CallbackListener.html" title="interface in controlP5"><code>CallbackListener</code></a></dd><script type="text/javascript">
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<div id="test" class="toggleList"><dl><dt onclick="toggle(this);"><span>+</span>Example</dt><dd><code><pre>/**
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* ControlP5 Listener.
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* the ControlListener interface can be used to implement a custom
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* ControlListener which listens for incoming ControlEvent from specific
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* controller(s). MyControlListener in the example below listens to
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* ControlEvents coming in from controller 'mySlider'.
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*
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* by andreas schlegel, 2012
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*/
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import controlP5.*;
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ControlP5 cp5;
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MyControlListener myListener;
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void setup() {
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size(700,400);
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cp5 = new ControlP5(this);
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cp5.setColor(ControlP5.THEME_RED);
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cp5.addSlider("mySlider")
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.setRange(100,200)
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.setValue(140)
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.setPosition(200,200)
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.setSize(200,20);
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myListener = new MyControlListener();
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cp5.getController("mySlider").addListener(myListener);
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}
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void draw() {
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background(myListener.col);
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}
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class MyControlListener implements ControlListener {
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int col;
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public void controlEvent(ControlEvent theEvent) {
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println("i got an event from mySlider, " +
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"changing background color to "+
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theEvent.getController().getValue());
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col = (int)theEvent.getController().getValue();
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}
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}
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</pre></code></dd></dl></div></dl>
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</li>
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<!-- ========== METHOD SUMMARY =========== -->
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<h3>Method Summary</h3>
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<table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
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<caption><span>Methods</span><span class="tabEnd"> </span></caption>
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<tr>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<th class="colLast" scope="col">Method and Description</th>
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</tr>
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<tr class="altColor">
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<td class="colFirst"><code>void</code></td>
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<td class="colLast"><code><strong><a href="../controlP5/ControlListener.html#controlEvent(controlP5.ControlEvent)">controlEvent</a></strong>(<a href="../controlP5/ControlEvent.html" title="class in controlP5">ControlEvent</a> theEvent)</code>
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<div class="block">controlEvent is called by controlP5's ControlBroadcaster to inform available listeners about
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value changes.</div>
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</td>
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</tr>
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</table>
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</li>
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<h3>Method Detail</h3>
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<a name="controlEvent(controlP5.ControlEvent)">
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<h4>controlEvent</h4>
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<pre>void controlEvent(<a href="../controlP5/ControlEvent.html" title="class in controlP5">ControlEvent</a> theEvent)</pre>
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<div class="block">controlEvent is called by controlP5's ControlBroadcaster to inform available listeners about
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value changes. Use the CallbackListener to get informed when actions such as pressed,
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release, drag, etc are performed.</div>
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<dl><dt><span class="strong">Parameters:</span></dt><dd><code>theEvent</code> - ControlEvent</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../controlP5/CallbackListener.html" title="interface in controlP5"><code>CallbackListener</code></a>,
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<a href="../controlP5/CallbackEvent.html" title="class in controlP5"><code>CallbackEvent</code></a></dd></dl>
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<p class="legalCopy"><small>processing library controlP5 by Andreas Schlegel. (c) 2006-2014</small></p>
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