@aidinabedi/playcanvas
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PlayCanvas WebGL game engine
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<div class='sidebarToggle'><span></span>Class List</div>
<main class="cls">
<h1>pc.ScrollViewComponent</h1>
<p class="extends">Extends: <a href="pc.Component.html">pc.Component</a></p>
<p><p>A ScrollViewComponent enables a group of entities to behave like a masked scrolling area, with optional horizontal and vertical scroll bars.</p></p>
<!-- summary -->
<h1>Summary</h1>
<!--type definitions-->
<!--static properties-->
<!--static methods-->
<!--properties-->
<h3>Properties</h3>
<table class="properties">
<tr>
<td><a href="#bounceAmount">bounceAmount</a></td><td><p>Controls how far the content should move before bouncing back.</td>
</tr>
<tr>
<td><a href="#contentEntity">contentEntity</a></td><td><p>The entity which contains the scrolling content itself.</td>
</tr>
<tr>
<td><a href="#friction">friction</a></td><td><p>Controls how freely the content should move if thrown, i.</td>
</tr>
<tr>
<td><a href="#horizontal">horizontal</a></td><td><p>Whether to enable horizontal scrolling.</td>
</tr>
<tr>
<td><a href="#horizontalScrollbarEntity">horizontalScrollbarEntity</a></td><td><p>The entity to be used as the vertical scrollbar.</td>
</tr>
<tr>
<td><a href="#horizontalScrollbarVisibility">horizontalScrollbarVisibility</a></td><td><p>Controls whether the horizontal scrollbar should be visible all the time, or only visible when the content exceeds the size of the viewport.</td>
</tr>
<tr>
<td><a href="#scrollMode">scrollMode</a></td><td><p>Specifies how the scroll view should behave when the user scrolls past the end of the content.</td>
</tr>
<tr>
<td><a href="#vertical">vertical</a></td><td><p>Whether to enable vertical scrolling.</td>
</tr>
<tr>
<td><a href="#verticalScrollbarEntity">verticalScrollbarEntity</a></td><td><p>The entity to be used as the vertical scrollbar.</td>
</tr>
<tr>
<td><a href="#verticalScrollbarVisibility">verticalScrollbarVisibility</a></td><td><p>Controls whether the vertical scrollbar should be visible all the time, or only visible when the content exceeds the size of the viewport.</td>
</tr>
<tr>
<td><a href="#viewportEntity">viewportEntity</a></td><td><p>The entity to be used as the masked viewport area, within which the content will scroll.</td>
</tr>
</table>
<!--methods-->
<!--events-->
<h3>Events</h3>
<table class="properties">
<tr>
<td><a href="#event:set:scroll">set:scroll</a></td><td><p>Fired whenever the scroll position changes.</td>
</tr>
</table>
<h2>Inherited</h2>
<!--inherited methods-->
<!--inherited properties-->
<h3>Properties</h3>
<table class="properties">
<tr>
<td><a href="#enabled">enabled</a></td><td><p>Enables or disables the component.</td>
</tr>
<tr>
<td><a href="#entity">entity</a></td><td><p>The Entity that this Component is attached to.</td>
</tr>
<tr>
<td><a href="#system">system</a></td><td><p>The ComponentSystem used to create this Component.</td>
</tr>
</table>
<!--inherited static methods-->
<h3>Methods</h3>
<table class="properties">
<tr>
<td><a href="#fire">fire</a></td><td><p>Fire an event, all additional arguments are passed on to the event listener.</td>
</tr>
<tr>
<td><a href="#hasEvent">hasEvent</a></td><td><p>Test if there are any handlers bound to an event name.</td>
</tr>
<tr>
<td><a href="#off">off</a></td><td><p>Detach an event handler from an event.</td>
</tr>
<tr>
<td><a href="#on">on</a></td><td><p>Attach an event handler to an event.</td>
</tr>
<tr>
<td><a href="#once">once</a></td><td><p>Attach an event handler to an event.</td>
</tr>
</table>
<!--inherited events-->
<h1>Details</h1>
<!--type definitions-->
<!--static members-->
<!--static methods-->
<h2>Constructor</h2>
<!-- Constructor -->
<div id="ScrollViewComponent">
<h3 class="methodname">ScrollViewComponent(system, entity) <a class="font-icon" href="#ScrollViewComponent"></a></h3>
<p><p>Create a new ScrollViewComponent.</p></p>
<h4>Parameters</h4>
<table>
<tr>
<td>system</td><td><a href="pc.ScrollViewComponentSystem.html">pc.ScrollViewComponentSystem</a></td><td><p>The ComponentSystem that created this Component.</p></td>
</tr>
<tr>
<td>entity</td><td><a href="pc.Entity.html">pc.Entity</a></td><td><p>The Entity that this Component is attached to.</p></td>
</tr>
</table>
</div>
<!--properties-->
<h2>Properties</h2>
<div id="bounceAmount">
<span class="property"><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number">number</a></span><span class="property">bounceAmount <a class="font-icon" href="#bounceAmount"></a></span>
<p><p>Controls how far the content should move before bouncing back.</p></p>
</div>
<div id="contentEntity">
<span class="property"><a href="pc.Entity.html">pc.Entity</a></span><span class="property">contentEntity <a class="font-icon" href="#contentEntity"></a></span>
<p><p>The entity which contains the scrolling content itself. This entity must have an Element component.</p></p>
</div>
<div id="friction">
<span class="property"><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number">number</a></span><span class="property">friction <a class="font-icon" href="#friction"></a></span>
<p><p>Controls how freely the content should move if thrown, i.e. By flicking on a phone or by flinging the scroll wheel on a mouse. A value of 1 means that content will stop immediately; 0 means that content will continue moving forever (or until the bounds of the content are reached, depending on the scrollMode).</p></p>
</div>
<div id="horizontal">
<span class="property"><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean">boolean</a></span><span class="property">horizontal <a class="font-icon" href="#horizontal"></a></span>
<p><p>Whether to enable horizontal scrolling.</p></p>
</div>
<div id="horizontalScrollbarEntity">
<span class="property"><a href="pc.Entity.html">pc.Entity</a></span><span class="property">horizontalScrollbarEntity <a class="font-icon" href="#horizontalScrollbarEntity"></a></span>
<p><p>The entity to be used as the vertical scrollbar. This entity must have a Scrollbar component.</p></p>
</div>
<div id="horizontalScrollbarVisibility">
<span class="property"><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number">number</a></span><span class="property">horizontalScrollbarVisibility <a class="font-icon" href="#horizontalScrollbarVisibility"></a></span>
<p><p>Controls whether the horizontal scrollbar should be visible all the time, or only visible when the content exceeds the size of the viewport.</p></p>
</div>
<div id="scrollMode">
<span class="property"><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number">number</a></span><span class="property">scrollMode <a class="font-icon" href="#scrollMode"></a></span>
<p><p>Specifies how the scroll view should behave when the user scrolls past the end of the content. Modes are defined as follows:</p>
<ul>
<li><a href="pc.html#SCROLL_MODE_CLAMP">pc.SCROLL_MODE_CLAMP</a>: Content does not scroll any further than its bounds.</li>
<li><a href="pc.html#SCROLL_MODE_BOUNCE">pc.SCROLL_MODE_BOUNCE</a>: Content scrolls past its bounds and then gently bounces back.</li>
<li><a href="pc.html#SCROLL_MODE_INFINITE">pc.SCROLL_MODE_INFINITE</a>: Content can scroll forever.</li>
</ul></p>
</div>
<div id="vertical">
<span class="property"><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean">boolean</a></span><span class="property">vertical <a class="font-icon" href="#vertical"></a></span>
<p><p>Whether to enable vertical scrolling.</p></p>
</div>
<div id="verticalScrollbarEntity">
<span class="property"><a href="pc.Entity.html">pc.Entity</a></span><span class="property">verticalScrollbarEntity <a class="font-icon" href="#verticalScrollbarEntity"></a></span>
<p><p>The entity to be used as the vertical scrollbar. This entity must have a Scrollbar component.</p></p>
</div>
<div id="verticalScrollbarVisibility">
<span class="property"><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number">number</a></span><span class="property">verticalScrollbarVisibility <a class="font-icon" href="#verticalScrollbarVisibility"></a></span>
<p><p>Controls whether the vertical scrollbar should be visible all the time, or only visible when the content exceeds the size of the viewport.</p></p>
</div>
<div id="viewportEntity">
<span class="property"><a href="pc.Entity.html">pc.Entity</a></span><span class="property">viewportEntity <a class="font-icon" href="#viewportEntity"></a></span>
<p><p>The entity to be used as the masked viewport area, within which the content will scroll. This entity must have an ElementGroup component.</p></p>
</div>
<!--methods-->
<!--events-->
<h2>Events</h2>
<div id="event:set:scroll">
<h3 class="methodname">set:scroll <a class="font-icon" href="#event:set:scroll"></a></h3>
<p><p>Fired whenever the scroll position changes.</p></p>
<h4>Parameters</h4>
<table>
<tr>
<td>scrollPosition</td><td><a href="pc.Vec2.html">pc.Vec2</a></td><td><p>Horizontal and vertical scroll values in the range 0...1.</p></td>
</tr>
</table>
</div>
<h2>Inherited</h2>
<!--inherited properties-->
<h2>Properties</h2>
<div id="enabled">
<span class="property"><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean">boolean</a></span><span class="property">enabled <a class="font-icon" href="#enabled"></a></span>
<p><p>Enables or disables the component.</p></p>
</div>
<div id="entity">
<span class="property"><a href="pc.Entity.html">pc.Entity</a></span><span class="property">entity <a class="font-icon" href="#entity"></a></span>
<p><p>The Entity that this Component is attached to.</p></p>
</div>
<div id="system">
<span class="property"><a href="pc.ComponentSystem.html">pc.ComponentSystem</a></span><span class="property">system <a class="font-icon" href="#system"></a></span>
<p><p>The ComponentSystem used to create this Component.</p></p>
</div>
<!--inherited methods-->
<h2>Methods</h2>
<div id="fire">
<h3 class="methodname">fire(name, [arg1], [arg2], [arg3], [arg4], [arg5], [arg6], [arg7], [arg8]) <a class="font-icon" href="#fire"></a></h3>
<p><p>Fire an event, all additional arguments are passed on to the event listener.</p></p>
<pre><code class="javascript">obj.fire('test', 'This is the message');</code></pre>
<h4>Parameters</h4>
<table>
<tr>
<td>name</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object">object</a></td><td><p>Name of event to fire.</p></td>
</tr>
<tr>
<td>arg1</td><td><a href="#">*</a></td><td><p>First argument that is passed to the event handler.</p></td>
</tr>
<tr>
<td>arg2</td><td><a href="#">*</a></td><td><p>Second argument that is passed to the event handler.</p></td>
</tr>
<tr>
<td>arg3</td><td><a href="#">*</a></td><td><p>Third argument that is passed to the event handler.</p></td>
</tr>
<tr>
<td>arg4</td><td><a href="#">*</a></td><td><p>Fourth argument that is passed to the event handler.</p></td>
</tr>
<tr>
<td>arg5</td><td><a href="#">*</a></td><td><p>Fifth argument that is passed to the event handler.</p></td>
</tr>
<tr>
<td>arg6</td><td><a href="#">*</a></td><td><p>Sixth argument that is passed to the event handler.</p></td>
</tr>
<tr>
<td>arg7</td><td><a href="#">*</a></td><td><p>Seventh argument that is passed to the event handler.</p></td>
</tr>
<tr>
<td>arg8</td><td><a href="#">*</a></td><td><p>Eighth argument that is passed to the event handler.</p></td>
</tr>
</table>
<h4>Returns</h4>
<a href="pc.EventHandler.html">pc.EventHandler</a> <p>Self for chaining.</p>
</div>
<div id="hasEvent">
<h3 class="methodname">hasEvent(name) <a class="font-icon" href="#hasEvent"></a></h3>
<p><p>Test if there are any handlers bound to an event name.</p></p>
<pre><code class="javascript">obj.on('test', function () { }); // bind an event to 'test'
obj.hasEvent('test'); // returns true
obj.hasEvent('hello'); // returns false</code></pre>
<h4>Parameters</h4>
<table>
<tr>
<td>name</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String">string</a></td><td><p>The name of the event to test.</p></td>
</tr>
</table>
<h4>Returns</h4>
<a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean">boolean</a> <p>True if the object has handlers bound to the specified event name.</p>
</div>
<div id="off">
<h3 class="methodname">off([name], [callback], [scope]) <a class="font-icon" href="#off"></a></h3>
<p><p>Detach an event handler from an event. If callback is not provided then all callbacks are unbound from the event,
if scope is not provided then all events with the callback will be unbound.</p></p>
<pre><code class="javascript">var handler = function () {
};
obj.on('test', handler);
obj.off(); // Removes all events
obj.off('test'); // Removes all events called 'test'
obj.off('test', handler); // Removes all handler functions, called 'test'
obj.off('test', handler, this); // Removes all hander functions, called 'test' with scope this</code></pre>
<h4>Parameters</h4>
<table>
<tr>
<td>name</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String">string</a></td><td><p>Name of the event to unbind.</p></td>
</tr>
<tr>
<td>callback</td><td><a href="pc.callbacks.html#HandleEvent">pc.callbacks.HandleEvent</a></td><td><p>Function to be unbound.</p></td>
</tr>
<tr>
<td>scope</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object">object</a></td><td><p>Scope that was used as the this when the event is fired.</p></td>
</tr>
</table>
<h4>Returns</h4>
<a href="pc.EventHandler.html">pc.EventHandler</a> <p>Self for chaining.</p>
</div>
<div id="on">
<h3 class="methodname">on(name, callback, [scope]) <a class="font-icon" href="#on"></a></h3>
<p><p>Attach an event handler to an event.</p></p>
<pre><code class="javascript">obj.on('test', function (a, b) {
console.log(a + b);
});
obj.fire('test', 1, 2); // prints 3 to the console</code></pre>
<h4>Parameters</h4>
<table>
<tr>
<td>name</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String">string</a></td><td><p>Name of the event to bind the callback to.</p></td>
</tr>
<tr>
<td>callback</td><td><a href="pc.callbacks.html#HandleEvent">pc.callbacks.HandleEvent</a></td><td><p>Function that is called when event is fired. Note the callback is limited to 8 arguments.</p></td>
</tr>
<tr>
<td>scope</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object">object</a></td><td><p>Object to use as 'this' when the event is fired, defaults to current this.</p></td>
</tr>
</table>
<h4>Returns</h4>
<a href="pc.EventHandler.html">pc.EventHandler</a> <p>Self for chaining.</p>
</div>
<div id="once">
<h3 class="methodname">once(name, callback, [scope]) <a class="font-icon" href="#once"></a></h3>
<p><p>Attach an event handler to an event. This handler will be removed after being fired once.</p></p>
<pre><code class="javascript">obj.once('test', function (a, b) {
console.log(a + b);
});
obj.fire('test', 1, 2); // prints 3 to the console
obj.fire('test', 1, 2); // not going to get handled</code></pre>
<h4>Parameters</h4>
<table>
<tr>
<td>name</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String">string</a></td><td><p>Name of the event to bind the callback to.</p></td>
</tr>
<tr>
<td>callback</td><td><a href="pc.callbacks.html#HandleEvent">pc.callbacks.HandleEvent</a></td><td><p>Function that is called when event is fired. Note the callback is limited to 8 arguments.</p></td>
</tr>
<tr>
<td>scope</td><td><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object">object</a></td><td><p>Object to use as 'this' when the event is fired, defaults to current this.</p></td>
</tr>
</table>
<h4>Returns</h4>
<a href="pc.EventHandler.html">pc.EventHandler</a> <p>Self for chaining.</p>
</div>
<!--inherited events-->
</main>
</div>
</body>
</html>