An Open Source library for multi-touch, WebGL powered applications.
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<li class="parent " data-name="DeepZoomImage#destroyTilesAboveLevel"><a href="DeepZoomImage.html#destroyTilesAboveLevel">destroyTilesAboveLevel</a></li>
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<li class="parent " data-name="DeepZoomImage#ensureTiles"><a href="DeepZoomImage.html#ensureTiles">ensureTiles</a></li>
<li class="parent " data-name="DeepZoomImage#levelAndAlphaForScale"><a href="DeepZoomImage.html#levelAndAlphaForScale">levelAndAlphaForScale</a></li>
<li class="parent " data-name="DeepZoomImage#levelForScale"><a href="DeepZoomImage.html#levelForScale">levelForScale</a></li>
<li class="parent " data-name="DeepZoomImage#neededTiles"><a href="DeepZoomImage.html#neededTiles">neededTiles</a></li>
<li class="parent " data-name="DeepZoomImage#populateAllTiles"><a href="DeepZoomImage.html#populateAllTiles">populateAllTiles</a></li>
<li class="parent " data-name="DeepZoomImage#populateTiles"><a href="DeepZoomImage.html#populateTiles">populateTiles</a></li>
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<span class="subtitle">Methods</span>
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<span class="subtitle">Methods</span>
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<span class="subtitle">Methods</span>
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<li class="parent " data-name="InteractivePopup#layout"><a href="InteractivePopup.html#layout">layout</a></li>
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<span class="title ">
<a href="LabeledGraphics.html">LabeledGraphics</a>
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<ul class="typedefs itemMembers">
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<span class="subtitle">Methods</span>
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<a href="LabeledGraphics.exports.LabeledGraphics.html">LabeledGraphics.exports.LabeledGraphics</a>
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<span class="subtitle">Methods</span>
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<ul class="typedefs itemMembers">
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<ul class="methods itemMembers">
<span class="subtitle">Methods</span>
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<span class="title ">
<a href="ModalInteractivePopup.html">ModalInteractivePopup</a>
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<ul class="typedefs itemMembers">
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<ul class="typedefs itemMembers">
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<span class="title ">
<a href="ModalModalInteractivePopup.html">ModalModalInteractivePopup</a>
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<li class="item" data-name="PIXIApp">
<span class="title ">
<a href="PIXIApp.html">PIXIApp</a>
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<li class="parent " data-name="PIXIApp#center"><a href="PIXIApp.html#center">center</a></li>
<li class="parent " data-name="PIXIApp#size"><a href="PIXIApp.html#size">size</a></li>
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<ul class="methods itemMembers">
<span class="subtitle">Methods</span>
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<li class="parent " data-name="PIXIApp#checkOrientation"><a href="PIXIApp.html#checkOrientation">checkOrientation</a></li>
<li class="parent " data-name="PIXIApp#convertPointFromNodeToPage"><a href="PIXIApp.html#convertPointFromNodeToPage">convertPointFromNodeToPage</a></li>
<li class="parent " data-name="PIXIApp#convertPointFromPageToNode"><a href="PIXIApp.html#convertPointFromPageToNode">convertPointFromPageToNode</a></li>
<li class="parent " data-name="PIXIApp#draw"><a href="PIXIApp.html#draw">draw</a></li>
<li class="parent " data-name="PIXIApp#expandRenderer"><a href="PIXIApp.html#expandRenderer">expandRenderer</a></li>
<li class="parent " data-name="PIXIApp#layout"><a href="PIXIApp.html#layout">layout</a></li>
<li class="parent " data-name="PIXIApp#loadSprites"><a href="PIXIApp.html#loadSprites">loadSprites</a></li>
<li class="parent " data-name="PIXIApp#loadTextures"><a href="PIXIApp.html#loadTextures">loadTextures</a></li>
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</ul>
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<li class="parent " data-name="Slider#disabled"><a href="Slider.html#disabled">disabled</a></li>
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<li class="parent " data-name="Theme.fromString"><a href="Theme.html#.fromString">fromString</a></li>
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<div class="main">
<h1 class="page-title" data-filename="pixi_slider.js.html">Source: pixi/slider.js</h1>
<section>
<header>
<div class="header content-size">
<h2>pixi/slider.js</h2>
</div>
</header>
<article>
<pre id="source-code" class="prettyprint source linenums"><code>import Theme from './theme.js'
import Tooltip from './tooltip.js'
/**
* Callback for the slider action onStart.
*
* @callback onStartCallback
* @param {object} event - The event object.
* @param {Slider} slider - A reference to the slider (also this refers to the slider).
*/
/**
* Callback for the slider action onUpdate.
*
* @callback onUpdateCallback
* @param {object} event - The event object.
* @param {Slider} slider - A reference to the slider (also this refers to the slider).
*/
/**
* Callback for the slider action onComplete.
*
* @callback onCompleteCallback
* @param {object} event - The event object.
* @param {Slider} slider - A reference to the slider (also this refers to the slider).
*/
/**
* Class that represents a PixiJS Slider.
*
* @example
* // Create the app
* const app = new PIXIApp({
* view: canvas,
* width: 900,
* height: 250
* }).setup().run()
*
* // Create the slider
* const slider = new Slider({
* x: 10,
* y: 20
* })
*
* // Add the slider to a DisplayObject
* app.scene.addChild(slider)
*
* @class
* @extends PIXI.Container
* @see {@link http://pixijs.download/dev/docs/PIXI.Container.html|PIXI.Container}
* @see {@link https://www.iwm-tuebingen.de/iwmbrowser/lib/pixi/slider.html|DocTest}
*/
export default class Slider extends PIXI.Container {
/**
* Creates an instance of a Slider.
*
* @constructor
* @param {object} [opts] - An options object to specify to style and behaviour of the slider.
* @param {number} [opts.id=auto generated] - The id of the slider.
* @param {number} [opts.x=0] - The x position of the slider. Can be also set after creation with slider.x = 0.
* @param {number} [opts.y=0] - The y position of the slider. Can be also set after creation with slider.y = 0.
* @param {string|Theme} [opts.theme=dark] - The theme to use for this slider. Possible values are dark, light, red
* or a Theme object.
* @param {number} [opts.width=250] - The width of the slider.
* @param {number} [opts.height=2] - The height of the slider.
* @param {PIXI.DisplayObject} [opts.container=window.app|object] - The container where the slider events should be attached to.
* @param {number} [opts.fill=Theme.fill] - The color of the slider background as a hex value.
* @param {number} [opts.fillAlpha=Theme.fillAlpha] - The alpha value of the background.
* @param {number} [opts.stroke=Theme.stroke] - The color of the border as a hex value.
* @param {number} [opts.strokeWidth=Theme.strokeWidth] - The width of the border in pixel.
* @param {number} [opts.strokeAlpha=Theme.strokeAlpha] - The alpha value of the border.
* @param {number} [opts.controlFill=Theme.stroke] - The color of the slider control background as a hex value.
* @param {number} [opts.controlFillAlpha=Theme.strokeAlpha] - The alpha value of the background.
* @param {number} [opts.controlStroke=Theme.stroke] - The color of the border as a hex value.
* @param {number} [opts.controlStrokeWidth=Theme.strokeWidth * 0.8] - The width of the border in pixel.
* @param {number} [opts.controlStrokeAlpha=Theme.strokeAlpha] - The alpha value of the border.
* @param {number} [opts.controlRadius=16] - The radius of the slider control.
* @param {boolean} [opts.disabled=false] - Is the slider disabled? When disabled, the slider has a lower alpha value
* and cannot be clicked (interactive is set to false).
* @param {onStartCallback} [opts.onStart] - Executed when the slider control starts to move.
* @param {onUpdateCallback} [opts.onUpdate] - Executed when the slider control is moved.
* @param {onCompleteCallback} [opts.onComplete] - Executed when the slider control was dropped.
* @param {string|object} [opts.tooltip] - A string for the label of the tooltip or an object to configure the tooltip
* to display.
* @param {boolean} [opts.visible=true] - Is the slider initially visible (property visible)?
*/
constructor(opts = {}) {
super()
const theme = Theme.fromString(opts.theme)
this.theme = theme
this.opts = Object.assign(
{},
{
id: PIXI.utils.uid(),
x: 0,
y: 0,
width: 250,
height: 2,
container: null,
fill: theme.fill,
fillAlpha: theme.fillAlpha,
stroke: theme.stroke,
strokeWidth: theme.strokeWidth,
strokeAlpha: theme.strokeAlpha,
controlFill: theme.fill,
controlFillAlpha: 0.5,
controlStroke: theme.primaryColor,
controlStrokeWidth: 2,
controlStrokeAlpha: theme.strokeAlpha,
controlRadius: 16,
orientation: 'horizontal',
min: 0,
max: 100,
value: 0,
disabled: false,
onStart: null,
onUpdate: null,
onComplete: null,
tooltip: null,
visible: true
},
opts
)
this.opts.container = this.opts.container || this
// Validation
//-----------------
if (this.opts.height > this.opts.width) {
this.opts.height = this.opts.width
}
if (this.opts.value &lt; this.opts.min) {
this.opts.value = this.opts.min
}
if (this.opts.value > this.opts.max) {
this.opts.value = this.opts.max
}
// Properties
//-----------------
this.id = this.opts.id
this.radius = this.opts.height / 2
this._value = this.opts.value
this._disabled = null
this.sliderObj = null
this.control = null
this.tooltip = null
this.visible = this.opts.visible
// setup
//-----------------
this.setup()
// layout
//-----------------
this.layout()
}
/**
* Creates children and instantiates everything.
*
* @private
* @return {Slider} A reference to the slider for chaining.
*/
setup() {
// Container events
//-----------------
const container = this.opts.container
this.on('pointermove', e => {
if (this.control.dragging) {
const moveX = this.control.event.data.getLocalPosition(
this.control.parent
).x
this._value = this.pixelToValue(
moveX - this.control.delta - this.opts.controlRadius
)
let x = this.valueToPixel(this._value) + this.opts.controlRadius
this.control.x = x
if (this.opts.onUpdate) {
this.opts.onUpdate.call(this, e, this)
}
}
})
if (container instanceof Element) {
container.addEventListener('pointerup', e => this.onEnd(e), false)
container.addEventListener(
'pointercancel',
e => this.onEnd(e),
false
)
container.addEventListener(
'pointerleave',
e => this.onEnd(e),
false
)
container.addEventListener('pointerout', e => this.onEnd(e), false)
container.addEventListener('mouseup', e => this.onEnd(e), false)
container.addEventListener('mousecancel', e => this.onEnd(e), false)
container.addEventListener('mouseleave', e => this.onEnd(e), false)
container.addEventListener('mouseout', e => this.onEnd(e), false)
} else {
container.interactive = true
container.on('pointerup', e => this.onEnd(e))
container.on('pointercancel', e => this.onEnd(e))
container.on('pointerleave', e => this.onEnd(e))
container.on('pointerout', e => this.onEnd(e))
}
// Slider
//-----------------
let sliderObj = new PIXI.Graphics()
this.sliderObj = sliderObj
this.addChild(sliderObj)
// Control
//-----------------
let control = new PIXI.Graphics()
control.x = this.opts.controlRadius + this.valueToPixel(this.opts.value)
control.y = this.opts.controlRadius
// pointerdown on the control for dragndrop
control.on('pointerdown', e => {
control.event = e
control.delta = e.data.getLocalPosition(this.control).x
control.dragging = true
if (this.opts.onStart) {
this.opts.onStart.call(this, e, this)
}
})
this.control = control
this.addChild(this.control)
// interaction
//-----------------
this.sliderObj.on('pointerover', e => {
TweenLite.to(this.control, this.theme.fast, { alpha: 0.83 })
})
this.sliderObj.on('pointerout', e => {
TweenLite.to(this.control, this.theme.fast, { alpha: 1 })
})
this.sliderObj.on('pointerdown', e => {
this.sliderObj.pointerdowned = true
TweenLite.to(this.control, this.theme.fast, { alpha: 0.7 })
})
// Click on the slider bar
this.sliderObj.on('pointerup', e => {
if (this.sliderObj.pointerdowned) {
this.sliderObj.pointerdowned = false
const position = e.data.getLocalPosition(this.control.parent)
this.value = this.pixelToValue(
position.x - this.opts.controlRadius
)
TweenLite.to(this.control, this.theme.fast, { alpha: 0.83 })
}
})
// disabled
//-----------------
this.disabled = this.opts.disabled
// tooltip
//-----------------
if (this.opts.tooltip) {
if (typeof this.opts.tooltip === 'string') {
this.tooltip = new Tooltip({
object: this,
content: this.opts.tooltip
})
} else {
this.opts.tooltip.object = this
this.tooltip = new Tooltip(this.opts.tooltip)
}
}
return this
}
/**
* Should be called to refresh the layout of the slider. Can be used after resizing.
*
* @return {Slider} A reference to the slider for chaining.
*/
layout() {
// set position
//-----------------
this.position.set(this.opts.x, this.opts.y)
// draw
//-----------------
this.draw()
return this
}
/**
* Draws the slider to the canvas.
*
* @private
* @return {Slider} A reference to the slider for chaining.
*/
draw() {
const r = this.radius
const cr = this.opts.controlRadius
const w = this.opts.width
const h = this.opts.height
const x = cr + r
const y = cr + r - h
this.sliderObj.clear()
this.sliderObj.beginFill(0xffffff, 0)
this.sliderObj.drawRect(0, 0, x + w + cr, cr * 2)
this.sliderObj.lineStyle(
this.opts.strokeWidth,
this.opts.stroke,
this.opts.strokeAlpha
)
this.sliderObj.beginFill(this.opts.fill, this.opts.fillAlpha)
this.sliderObj.moveTo(x, y)
this.sliderObj.lineTo(x + w, y)
this.sliderObj.arcTo(x + w + r, y, x + w + r, y + r, r)
this.sliderObj.lineTo(x + w + r, y + r + 1) // BUGFIX: If not specified, there is a small area without a stroke.
this.sliderObj.arcTo(x + w + r, y + h, x + w, y + h, r)
this.sliderObj.lineTo(x, y + h)
this.sliderObj.arcTo(x - r, y + h, x - r, y + r, r)
this.sliderObj.arcTo(x - r, y, x, y, r)
this.sliderObj.endFill()
// Draw control
this.control.clear()
this.control.lineStyle(
this.opts.controlStrokeWidth,
this.opts.controlStroke,
this.opts.controlStrokeAlpha
)
this.control.beginFill(
this.opts.controlFill,
this.opts.controlFillAlpha
)
this.control.drawCircle(0, 0, cr - 1)
this.control.beginFill(
this.opts.controlStroke,
this.opts.controlStrokeAlpha
)
this.control.drawCircle(0, 0, cr / 6)
this.control.endFill()
return this
}
/**
* Executed, when the slider control movement ended.
*
* @private
* @return {Slider} A reference to the slider for chaining.
*/
onEnd(e) {
if (this.control.dragging) {
this.control.event = null
this.control.dragging = false
if (this.opts.onComplete) {
this.opts.onComplete.call(this, e, this)
}
}
return this
}
/**
* Calculates the value for a given pixel.
*
* @private
* @param {number} value
* @returns {number} The calucalted pixel.
*/
valueToPixel(value) {
if (value &lt; this.opts.min) {
value = this.opts.min
} else if (value > this.opts.max) {
value = this.opts.max
}
return (
(this.opts.width * (value - this.opts.min)) /
(this.opts.max - this.opts.min)
)
}
/**
* Calculates the pixel for a given value.
*
* @private
* @param {number} pixel
* @returns {number} The calucalted value.
*/
pixelToValue(pixel) {
if (pixel &lt; 0) {
pixel = 0
} else if (pixel > this.opts.width) {
pixel = this.opts.width
}
return (
this.opts.min +
((this.opts.max - this.opts.min) * pixel) / this.opts.width
)
}
/**
* Gets or sets the value.
*
* @member {number}
*/
get value() {
return Math.round(this._value)
}
set value(value) {
if (value &lt; this.opts.min) {
value = this.opts.min
} else if (value > this.opts.max) {
value = this.opts.max
}
this._value = value
const x = this.valueToPixel(value) + this.opts.controlRadius
TweenLite.to(this.control, this.theme.fast, { x })
}
/**
* Gets or sets the disabled state. When disabled, the slider cannot be clicked.
*
* @member {boolean}
*/
get disabled() {
return this._disabled
}
set disabled(value) {
this._disabled = value
if (this._disabled) {
this.interactive = false
this.sliderObj.interactive = false
this.control.interactive = false
this.control.buttonMode = false
this.alpha = 0.5
} else {
this.interactive = true
this.sliderObj.interactive = true
this.control.interactive = true
this.control.buttonMode = true
this.alpha = 1
}
}
/**
* Shows the slider (sets his alpha values to 1).
*
* @return {Slider} A reference to the slider for chaining.
*/
show() {
this.opts.strokeAlpha = 1
this.opts.fillAlpha = 1
this.opts.controlStrokeAlpha = 1
this.opts.controlFillAlpha = 1
this.layout()
return this
}
/**
* Hides the slider (sets his alpha values to 1).
*
* @return {Slider} A reference to the slider for chaining.
*/
hide() {
this.opts.strokeAlpha = 0
this.opts.fillAlpha = 0
this.opts.controlStrokeAlpha = 0
this.opts.controlFillAlpha = 0
this.layout()
return this
}
}
</code></pre>
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