/* global */ import Theme from './theme.js' import Tooltip from './tooltip.js' import Badge from './badge.js' import Events from '../events.js' import { Points } from '../utils.js' /** * Callback for the button action. * * @callback actionCallback * @param {object} event - The event object. * @param {Button} button - A reference to the button (also this refers to the button). */ /** * Callback for the button beforeAction. * * @callback beforeActionCallback * @param {object} event - The event object. * @param {Button} button - A reference to the button (also this refers to the button). */ /** * Callback for the button afterAction. * * @callback afterActionCallback * @param {object} event - The event object. * @param {Button} button - A reference to the button (also this refers to the button). */ /** * Class that represents a PixiJS Button. * * @example * // Create the button * const button = new Button({ * label: 'My Button', * action: () => console.log('Button was clicked') * }) * * // Add the button to a DisplayObject * app.scene.addChild(button) * * @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/button.html|DocTest} */ export default class Button extends PIXI.Container { /** * Creates an instance of a Button. * * @constructor * @param {object} [opts] - An options object to specify to style and behaviour of the button. * @param {number} [opts.id=auto generated] - The id of the button. * @param {string} [opts.label] - The label of the button. * @param {number} [opts.x=0] - The x position of the button. Can be also set after creation with button.x = 0. * @param {number} [opts.y=0] - The y position of the button. Can be also set after creation with button.y = 0. * @param {string|Theme} [opts.theme=dark] - The theme to use for this button. Possible values are dark, light, red * or a Theme object. * @param {number} [opts.minWidth=44] - The minimum width of the button. * @param {number} [opts.minHeight=44] - The minimum height of the button. * @param {number} [opts.padding=Theme.padding] - The inner spacing (distance from icon and/or label) to the border. * @param {string|PIXI.DisplayObject} [opts.icon] - The icon of the button. Can be a predefined one, an URL or an PIXI.DisplayObject. * @param {string|PIXI.DisplayObject} [opts.iconActive=icon] - The icon of the button when activated. Can be a predefined one, an URL or an PIXI.DisplayObject. * @param {string} [opts.iconPosition=left] - The position of the icon in relation to the label. Can be left or right. * @param {number} [opts.iconColor=Theme.iconColor] - The color of the icon (set by the tint property) as a hex value. * @param {number} [opts.iconColorActive=Theme.iconColorActive] - The color of the icon when activated. * @param {number} [opts.fill=Theme.fill] - The color of the button background as a hex value. * @param {number} [opts.fillAlpha=Theme.fillAlpha] - The alpha value of the background. * @param {number} [opts.fillActive=Theme.fillActive] - The color of the button background when activated. * @param {number} [opts.fillActiveAlpha=Theme.fillActiveAlpha] - The alpha value of the background when activated. * @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.strokeActive=Theme.strokeActive] - The color of the border when activated. * @param {number} [opts.strokeActiveWidth=Theme.strokeActiveWidth] - The width of the border in pixel when activated. * @param {number} [opts.strokeActiveAlpha=Theme.strokeActiveAlpha] - The alpha value of the border when activated. * @param {object} [opts.textStyle=Theme.textStyle] - A textstyle object for the styling of the label. See PIXI.TextStyle * for possible options. * @param {number} [opts.textStyleActive=Theme.textStyleActive] - A textstyle object for the styling of the label when the * button is activated. See PIXI.TextStyle for possible options. * @param {string} [opts.style=default] - A shortcut for styling options. Possible values are default, link. * @param {number} [opts.radius=Theme.radius] - The radius of the four corners of the button (which is a rounded rectangle). * @param {boolean} [opts.disabled=false] - Is the button disabled? When disabled, the button has a lower alpha value * and cannot be clicked (interactive is set to false). * @param {boolean} [opts.active=false] - Is the button initially active? * @param {actionCallback} [opts.action] - Executed when the button was triggered (by pointerup). * @param {beforeActionCallback} [opts.beforeAction] - Executed before the main action is triggered. * @param {afterActionCallback} [opts.afterAction] - Executed after the main action was triggered. * @param {string} [opts.type=default] - The type of the button. Can be default or checkbox. When the type is * checkbox, the active state is toggled automatically. * @param {string} [opts.align=center] - The horizontal position of the label and the icon. Possible values are * left, center and right. Only affects the style when the minWidth is bigger than the width of the icon and label. * @param {string} [opts.verticalAlign=middle] - The vertical position of the label and the icon. Possible values are * top, middle and button. Only affects the style when the minHeight is bigger than the height of the icon and label. * @param {string|object} [opts.tooltip] - A string for the label of the tooltip or an object to configure the tooltip * to display. * @param {string|object} [opts.badge] - A string for the label of the badge or an object to configure the badge to display. * If the parameter is an object, all badge options can be set plus the following: * @param {string} [opts.badge.align=right] - The horizontal alignment of the badge. Possible values: left, center, right * @param {string} [opts.badge.verticalAlign=top] - The vertical alignment of the badge. Possible values: top, middle, bottom * @param {number} [opts.badge.offsetLeft=0] - The horizontal shift of the badge. * @param {number} [opts.badge.offsetTop=0] - The vertical shift of the badge. * @param {boolean} [opts.visible=true] - Is the button initially visible (property visible)? */ constructor(opts = {}) { super() const theme = Theme.fromString(opts.theme) this.theme = theme this.opts = Object.assign( {}, { id: PIXI.utils.uid(), label: null, x: 0, y: 0, minWidth: 44, minHeight: 44, padding: theme.padding, icon: undefined, iconActive: undefined, iconPosition: 'left', iconColor: theme.iconColor, iconColorActive: theme.iconColorActive, fill: theme.fill, fillAlpha: theme.fillAlpha, fillActive: theme.fillActive, fillActiveAlpha: theme.fillActiveAlpha, stroke: theme.stroke, strokeWidth: theme.strokeWidth, strokeAlpha: theme.strokeAlpha, strokeActive: theme.strokeActive, strokeActiveWidth: theme.strokeActiveWidth, strokeActiveAlpha: theme.strokeActiveAlpha, textStyle: {}, textStyleActive: {}, style: 'default', radius: theme.radius, disabled: false, active: false, action: null, beforeAction: null, afterAction: null, type: 'default', align: 'center', verticalAlign: 'middle', tooltip: null, badge: null, visible: true }, opts ) this.id = this.opts.id this.opts.textStyle = Object.assign({}, theme.textStyle, this.opts.textStyle) this.opts.textStyleActive = Object.assign({}, theme.textStyleActive, this.opts.textStyleActive) if (typeof this.opts.icon === 'undefined' && typeof this.opts.iconActive !== 'undefined') { this.opts.icon = this.opts.iconActive } else if (typeof this.opts.icon !== 'undefined' && typeof this.opts.iconActive === 'undefined') { this.opts.iconActive = this.opts.icon } if (this.opts.style === 'link') { Object.assign(this.opts, { strokeAlpha: 0, strokeActiveAlpha: 0, fillAlpha: 0, fillActiveAlpha: 0 }) } this._active = null this._disabled = null this.__start = { x: null, y: null } this.iconInactive = null this.iconActive = null this.text = null this.button = null this.content = null this.tooltip = null this.badge = null this.visible = this.opts.visible // setup //----------------- this.setup() } /** * Captures an event to inform InteractionMapper about processed events. * * @param {event|PIXI.InteractionEvent} event - The PIXI event to capture. */ capture(event) { Events.capturedBy(event.data.originalEvent, this) } /** * Creates children and instantiates everything. * * @private * @return {Button} A reference to the button for chaining. */ setup() { // Button //----------------- let button = new PIXI.Graphics() this.button = button this.addChild(button) // Content //----------------- let content = new PIXI.Container() this.content = content this.addChild(content) // Text //----------------- if (this.opts.label) { this.text = new PIXI.Text(this.opts.label, this.opts.textStyle) } // Icon //----------------- if (this.opts.icon) { this.iconInactive = this.loadIcon(this.opts.icon, this.opts.iconColor) } if (this.opts.iconActive) { this.iconActive = this.loadIcon(this.opts.iconActive, this.opts.iconColorActive) } // interaction //----------------- this.button.on('pointerover', e => { this.capture(e) TweenLite.to([this.button, this.content], this.theme.fast, { alpha: 0.83, overwrite: 'none' }) }) this.button.on('pointermove', e => { this.capture(e) }) this.button.on('pointerout', this.onEnd.bind(this)) this.button.on('pointercancel', this.onEnd.bind(this)) this.button.on('pointerupoutside', this.onEnd.bind(this)) this.button.on('pointertap', this.onEnd.bind(this)) this.button.on('scroll', this.onEnd.bind(this)) // eslint-disable-next-line no-unused-vars this.button.on('pointerdown', e => { //this.capture(e) this.__start.x = e.data.global.x this.__start.y = e.data.global.y TweenLite.to([this.button, this.content], this.theme.fast, { alpha: 0.7, overwrite: 'none' }) }) this.button.on('pointerup', e => { this.capture(e) const distance = Points.distance(e.data.global, this.__start) if (distance < 5) { if (this.opts.beforeAction) { this.opts.beforeAction.call(this, e, this) } if (this.opts.action) { this.opts.action.call(this, e, this) } TweenLite.to([this.button, this.content], this.theme.fast, { alpha: 0.83, overwrite: 'none' }) if (this.opts.type === 'checkbox') { this.active = !this.active } if (this.opts.afterAction) { this.opts.afterAction.call(this, e, this) } } }) // disabled //----------------- this.disabled = this.opts.disabled // active //----------------- this.active = this.opts.active // calls .layout() // 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.assign({}, { object: this }, this.opts.tooltip) this.tooltip = new Tooltip(this.opts.tooltip) } } // badge //----------------- if (this.opts.badge) { let opts = Object.assign( {}, { align: 'right', verticalAlign: 'top', offsetLeft: 0, offsetTop: 0 } ) if (typeof this.opts.badge === 'string') { opts = Object.assign(opts, { content: this.opts.badge }) } else { opts = Object.assign(opts, this.opts.badge) } const badge = new Badge(opts) this.addChild(badge) this.badge = badge } this.layout() // set position //----------------- this.position.set(this.opts.x, this.opts.y) return this } /** * Should be called to refresh the layout of the button. Can be used after resizing. * * @return {Button} A reference to the button for chaining. */ layout() { // Clear content //----------------- this.removeChild(this.content) this.content = new PIXI.Container() this.addChild(this.content) // Set the icon //----------------- let icon = null if (!this.active && this.iconInactive) { icon = this.iconInactive } else if (this.active && this.iconActive) { icon = this.iconActive } // Set the text //----------------- if (this.text) { this.text.position.set(0, 0) } // Width and Height //----------------- let width = 0 if (icon && this.text) { width = icon.width + this.text.width + 3 * this.opts.padding } else if (icon) { width = icon.width + 2 * this.opts.padding } else if (this.text) { width = this.text.width + 2 * this.opts.padding } if (width < this.opts.minWidth) { width = this.opts.minWidth } let height = 0 if (icon) { height = icon.height + 2 * this.opts.padding } else if (this.text) { height = this.text.height + 2 * this.opts.padding } if (height < this.opts.minHeight) { height = this.opts.minHeight } this._width = width this._height = height // Position icon and text //----------------- if (icon && this.text) { if (this.opts.iconPosition === 'right') { icon.x = this.text.width + this.opts.padding } else { this.text.x = icon.width + this.opts.padding } this.content.addChild(icon, this.text) } else if (icon) { this.content.addChild(icon) } else if (this.text) { this.content.addChild(this.text) } this.layoutInnerContent() this.layoutContent() this.icon = icon // badge //-------------------- if (this.badge) { this.removeChild(this.badge) const width = this._width const height = this._height this.addChild(this.badge) const badge = this.badge switch (badge.opts.align) { case 'left': badge.x = -badge.width / 2 + badge.opts.offsetLeft break case 'center': badge.x = width / 2 - badge.width / 2 + badge.opts.offsetLeft break case 'right': badge.x = width - badge.width / 2 + badge.opts.offsetLeft } switch (badge.opts.verticalAlign) { case 'top': badge.y = -badge.height / 2 + badge.opts.offsetTop break case 'middle': badge.y = height / 2 - badge.height / 2 + badge.opts.offsetTop break case 'bottom': badge.y = height - badge.height / 2 + badge.opts.offsetTop } } // draw //----------------- this.draw() return this } /** * Calculates the positions of the content children (icon and/or text). * * @private * @return {Button} A reference to the button for chaining. */ layoutInnerContent() { for (let child of this.content.children) { switch (this.opts.verticalAlign) { case 'top': child.y = 0 break case 'middle': child.y = this.content.height / 2 - child.height / 2 break case 'bottom': child.y = this.content.height - child.height break } } return this } /** * Sets the horizontal and vertical position of the content. * Uses the option keys "align" and "verticalAlign". * * @private * @return {Button} A reference to the button for chaining. */ layoutContent() { switch (this.opts.align) { case 'left': this.content.x = this.opts.padding break case 'center': this.content.x = (this._width - this.content.width) / 2 break case 'right': this.content.x = this._width - this.opts.padding - this.content.width break } switch (this.opts.verticalAlign) { case 'top': this.content.y = this.opts.padding break case 'middle': this.content.y = (this._height - this.content.height) / 2 break case 'bottom': this.content.y = this._height - this.opts.padding - this.content.height break } return this } /** * Draws the canvas. * * @private * @return {Button} A reference to the button for chaining. */ draw() { this.button.clear() if (this.active) { this.button.lineStyle(this.opts.strokeActiveWidth, this.opts.strokeActive, this.opts.strokeActiveAlpha) this.button.beginFill(this.opts.fillActive, this.opts.fillActiveAlpha) } else { this.button.lineStyle(this.opts.strokeWidth, this.opts.stroke, this.opts.strokeAlpha) this.button.beginFill(this.opts.fill, this.opts.fillAlpha) } this.button.drawRoundedRect(0, 0, this._width, this._height, this.opts.radius) this.button.endFill() return this } /** * Gets or sets the active state. * * @member {boolean} */ get active() { return this._active } set active(value) { this._active = value if (this._active) { if (this.text) { this.text.style = this.opts.textStyleActive } } else { if (this.text) { this.text.style = this.opts.textStyle } } this.layout() } /** * Gets or sets the disabled state. When disabled, the button cannot be clicked. * * @member {boolean} */ get disabled() { return this._disabled } set disabled(value) { this._disabled = value if (this._disabled) { this.button.interactive = false this.button.buttonMode = false this.button.alpha = 0.5 if (this.icon) { this.icon.alpha = 0.5 } if (this.text) { this.text.alpha = 0.5 } } else { this.button.interactive = true this.button.buttonMode = true this.button.alpha = 1 if (this.icon) { this.icon.alpha = 1 } if (this.text) { this.text.alpha = 1 } } } /** * Shows the button (sets his alpha values to 1). * * @return {Button} A reference to the button for chaining. */ show() { this.opts.strokeAlpha = 1 this.opts.strokeActiveAlpha = 1 this.opts.fillAlpha = 1 this.opts.fillActiveAlpha = 1 this.layout() return this } /** * Hides the button (sets his alpha values to 0). * * @return {Button} A reference to the button for chaining. */ hide() { this.opts.strokeAlpha = 0 this.opts.strokeActiveAlpha = 0 this.opts.fillAlpha = 0 this.opts.fillActiveAlpha = 0 this.layout() return this } /** * Loads an icon * * @private * @param {string|PIXI.DisplayObject} icon - The icon to load. * @param {number} color - The color of the icon (if not an PIXI.DisplayObject). * @return {PIXI.DisplayObject} Return the icon as an PIXI.DisplayObject. */ loadIcon(icon, color) { let displayObject = null if (icon instanceof PIXI.DisplayObject) { displayObject = icon } else { let size = 17 if (this.text) { size = this.text.height } else if (this.opts.minHeight) { size = this.opts.minHeight - 2 * this.opts.padding } const url = Button.iconIsUrl(icon) ? icon : `../../assets/icons/${icon}.png` const iconTexture = PIXI.Texture.from(url) const sprite = new PIXI.Sprite(iconTexture) sprite.tint = color sprite.width = size sprite.height = size displayObject = sprite } return displayObject } /** * Tests if an icon string is an url. * * @private * @static * @param {string} url - The url to test. * @return {boolean} true if the url is an url to an image. */ static iconIsUrl(url) { return /\.(png|svg|gif|jpg|jpeg|tif|tiff)$/i.test(url) } /** * Gets or sets the color of the current icon (no matter how the status is). Changing the color, changes * the tint property of the icon sprite. * * @member {number} */ get iconColor() { return this.icon ? this.icon.tint : null } set iconColor(value) { if (this.icon) { this.icon.tint = value } } onEnd(event) { this.capture(event) TweenLite.to([this.button, this.content], this.theme.fast, { alpha: 1, overwrite: 'none' }) } }