mirror of
https://github.com/YunoHost-Apps/hubzilla_ynh.git
synced 2024-09-03 19:26:21 +02:00
377 lines
11 KiB
JavaScript
377 lines
11 KiB
JavaScript
/**
|
|
* Copyright (c) 2011-2014 Felix Gnass
|
|
* Licensed under the MIT license
|
|
* http://spin.js.org/
|
|
*
|
|
* Example:
|
|
var opts = {
|
|
lines: 12, // The number of lines to draw
|
|
, length: 7, // The length of each line
|
|
, width: 5, // The line thickness
|
|
, radius: 10 // The radius of the inner circle
|
|
, scale: 1.0 // Scales overall size of the spinner
|
|
, corners: 1 // Roundness (0..1)
|
|
, color: '#000' // #rgb or #rrggbb
|
|
, opacity: 1/4 // Opacity of the lines
|
|
, rotate: 0 // Rotation offset
|
|
, direction: 1 // 1: clockwise, -1: counterclockwise
|
|
, speed: 1 // Rounds per second
|
|
, trail: 100 // Afterglow percentage
|
|
, fps: 20 // Frames per second when using setTimeout()
|
|
, zIndex: 2e9 // Use a high z-index by default
|
|
, className: 'spinner' // CSS class to assign to the element
|
|
, top: '50%' // center vertically
|
|
, left: '50%' // center horizontally
|
|
, shadow: false // Whether to render a shadow
|
|
, hwaccel: false // Whether to use hardware acceleration (might be buggy)
|
|
, position: 'absolute' // Element positioning
|
|
}
|
|
var target = document.getElementById('foo')
|
|
var spinner = new Spinner(opts).spin(target)
|
|
*/
|
|
;(function (root, factory) {
|
|
|
|
/* CommonJS */
|
|
if (typeof exports == 'object') module.exports = factory()
|
|
|
|
/* AMD module */
|
|
else if (typeof define == 'function' && define.amd) define(factory)
|
|
|
|
/* Browser global */
|
|
else root.Spinner = factory()
|
|
}(this, function () {
|
|
"use strict"
|
|
|
|
var prefixes = ['webkit', 'Moz', 'ms', 'O'] /* Vendor prefixes */
|
|
, animations = {} /* Animation rules keyed by their name */
|
|
, useCssAnimations /* Whether to use CSS animations or setTimeout */
|
|
, sheet /* A stylesheet to hold the @keyframe or VML rules. */
|
|
|
|
/**
|
|
* Utility function to create elements. If no tag name is given,
|
|
* a DIV is created. Optionally properties can be passed.
|
|
*/
|
|
function createEl (tag, prop) {
|
|
var el = document.createElement(tag || 'div')
|
|
, n
|
|
|
|
for (n in prop) el[n] = prop[n]
|
|
return el
|
|
}
|
|
|
|
/**
|
|
* Appends children and returns the parent.
|
|
*/
|
|
function ins (parent /* child1, child2, ...*/) {
|
|
for (var i = 1, n = arguments.length; i < n; i++) {
|
|
parent.appendChild(arguments[i])
|
|
}
|
|
|
|
return parent
|
|
}
|
|
|
|
/**
|
|
* Creates an opacity keyframe animation rule and returns its name.
|
|
* Since most mobile Webkits have timing issues with animation-delay,
|
|
* we create separate rules for each line/segment.
|
|
*/
|
|
function addAnimation (alpha, trail, i, lines) {
|
|
var name = ['opacity', trail, ~~(alpha * 100), i, lines].join('-')
|
|
, start = 0.01 + i/lines * 100
|
|
, z = Math.max(1 - (1-alpha) / trail * (100-start), alpha)
|
|
, prefix = useCssAnimations.substring(0, useCssAnimations.indexOf('Animation')).toLowerCase()
|
|
, pre = prefix && '-' + prefix + '-' || ''
|
|
|
|
if (!animations[name]) {
|
|
sheet.insertRule(
|
|
'@' + pre + 'keyframes ' + name + '{' +
|
|
'0%{opacity:' + z + '}' +
|
|
start + '%{opacity:' + alpha + '}' +
|
|
(start+0.01) + '%{opacity:1}' +
|
|
(start+trail) % 100 + '%{opacity:' + alpha + '}' +
|
|
'100%{opacity:' + z + '}' +
|
|
'}', sheet.cssRules.length)
|
|
|
|
animations[name] = 1
|
|
}
|
|
|
|
return name
|
|
}
|
|
|
|
/**
|
|
* Tries various vendor prefixes and returns the first supported property.
|
|
*/
|
|
function vendor (el, prop) {
|
|
var s = el.style
|
|
, pp
|
|
, i
|
|
|
|
prop = prop.charAt(0).toUpperCase() + prop.slice(1)
|
|
if (s[prop] !== undefined) return prop
|
|
for (i = 0; i < prefixes.length; i++) {
|
|
pp = prefixes[i]+prop
|
|
if (s[pp] !== undefined) return pp
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Sets multiple style properties at once.
|
|
*/
|
|
function css (el, prop) {
|
|
for (var n in prop) {
|
|
el.style[vendor(el, n) || n] = prop[n]
|
|
}
|
|
|
|
return el
|
|
}
|
|
|
|
/**
|
|
* Fills in default values.
|
|
*/
|
|
function merge (obj) {
|
|
for (var i = 1; i < arguments.length; i++) {
|
|
var def = arguments[i]
|
|
for (var n in def) {
|
|
if (obj[n] === undefined) obj[n] = def[n]
|
|
}
|
|
}
|
|
return obj
|
|
}
|
|
|
|
/**
|
|
* Returns the line color from the given string or array.
|
|
*/
|
|
function getColor (color, idx) {
|
|
return typeof color == 'string' ? color : color[idx % color.length]
|
|
}
|
|
|
|
// Built-in defaults
|
|
|
|
var defaults = {
|
|
lines: 12 // The number of lines to draw
|
|
, length: 7 // The length of each line
|
|
, width: 5 // The line thickness
|
|
, radius: 10 // The radius of the inner circle
|
|
, scale: 1.0 // Scales overall size of the spinner
|
|
, corners: 1 // Roundness (0..1)
|
|
, color: '#000' // #rgb or #rrggbb
|
|
, opacity: 1/4 // Opacity of the lines
|
|
, rotate: 0 // Rotation offset
|
|
, direction: 1 // 1: clockwise, -1: counterclockwise
|
|
, speed: 1 // Rounds per second
|
|
, trail: 100 // Afterglow percentage
|
|
, fps: 20 // Frames per second when using setTimeout()
|
|
, zIndex: 2e9 // Use a high z-index by default
|
|
, className: 'spinner' // CSS class to assign to the element
|
|
, top: '50%' // center vertically
|
|
, left: '50%' // center horizontally
|
|
, shadow: false // Whether to render a shadow
|
|
, hwaccel: false // Whether to use hardware acceleration (might be buggy)
|
|
, position: 'absolute' // Element positioning
|
|
}
|
|
|
|
/** The constructor */
|
|
function Spinner (o) {
|
|
this.opts = merge(o || {}, Spinner.defaults, defaults)
|
|
}
|
|
|
|
// Global defaults that override the built-ins:
|
|
Spinner.defaults = {}
|
|
|
|
merge(Spinner.prototype, {
|
|
/**
|
|
* Adds the spinner to the given target element. If this instance is already
|
|
* spinning, it is automatically removed from its previous target b calling
|
|
* stop() internally.
|
|
*/
|
|
spin: function (target) {
|
|
this.stop()
|
|
|
|
var self = this
|
|
, o = self.opts
|
|
, el = self.el = createEl(null, {className: o.className})
|
|
|
|
css(el, {
|
|
position: o.position
|
|
, width: 0
|
|
, zIndex: o.zIndex
|
|
, left: o.left
|
|
, top: o.top
|
|
})
|
|
|
|
if (target) {
|
|
target.insertBefore(el, target.firstChild || null)
|
|
}
|
|
|
|
el.setAttribute('role', 'progressbar')
|
|
self.lines(el, self.opts)
|
|
|
|
if (!useCssAnimations) {
|
|
// No CSS animation support, use setTimeout() instead
|
|
var i = 0
|
|
, start = (o.lines - 1) * (1 - o.direction) / 2
|
|
, alpha
|
|
, fps = o.fps
|
|
, f = fps / o.speed
|
|
, ostep = (1 - o.opacity) / (f * o.trail / 100)
|
|
, astep = f / o.lines
|
|
|
|
;(function anim () {
|
|
i++
|
|
for (var j = 0; j < o.lines; j++) {
|
|
alpha = Math.max(1 - (i + (o.lines - j) * astep) % f * ostep, o.opacity)
|
|
|
|
self.opacity(el, j * o.direction + start, alpha, o)
|
|
}
|
|
self.timeout = self.el && setTimeout(anim, ~~(1000 / fps))
|
|
})()
|
|
}
|
|
return self
|
|
}
|
|
|
|
/**
|
|
* Stops and removes the Spinner.
|
|
*/
|
|
, stop: function () {
|
|
var el = this.el
|
|
if (el) {
|
|
clearTimeout(this.timeout)
|
|
if (el.parentNode) el.parentNode.removeChild(el)
|
|
this.el = undefined
|
|
}
|
|
return this
|
|
}
|
|
|
|
/**
|
|
* Internal method that draws the individual lines. Will be overwritten
|
|
* in VML fallback mode below.
|
|
*/
|
|
, lines: function (el, o) {
|
|
var i = 0
|
|
, start = (o.lines - 1) * (1 - o.direction) / 2
|
|
, seg
|
|
|
|
function fill (color, shadow) {
|
|
return css(createEl(), {
|
|
position: 'absolute'
|
|
, width: o.scale * (o.length + o.width) + 'px'
|
|
, height: o.scale * o.width + 'px'
|
|
, background: color
|
|
, boxShadow: shadow
|
|
, transformOrigin: 'left'
|
|
, transform: 'rotate(' + ~~(360/o.lines*i + o.rotate) + 'deg) translate(' + o.scale*o.radius + 'px' + ',0)'
|
|
, borderRadius: (o.corners * o.scale * o.width >> 1) + 'px'
|
|
})
|
|
}
|
|
|
|
for (; i < o.lines; i++) {
|
|
seg = css(createEl(), {
|
|
position: 'absolute'
|
|
, top: 1 + ~(o.scale * o.width / 2) + 'px'
|
|
, transform: o.hwaccel ? 'translate3d(0,0,0)' : ''
|
|
, opacity: o.opacity
|
|
, animation: useCssAnimations && addAnimation(o.opacity, o.trail, start + i * o.direction, o.lines) + ' ' + 1 / o.speed + 's linear infinite'
|
|
})
|
|
|
|
if (o.shadow) ins(seg, css(fill('#000', '0 0 4px #000'), {top: '2px'}))
|
|
ins(el, ins(seg, fill(getColor(o.color, i), '0 0 1px rgba(0,0,0,.1)')))
|
|
}
|
|
return el
|
|
}
|
|
|
|
/**
|
|
* Internal method that adjusts the opacity of a single line.
|
|
* Will be overwritten in VML fallback mode below.
|
|
*/
|
|
, opacity: function (el, i, val) {
|
|
if (i < el.childNodes.length) el.childNodes[i].style.opacity = val
|
|
}
|
|
|
|
})
|
|
|
|
|
|
function initVML () {
|
|
|
|
/* Utility function to create a VML tag */
|
|
function vml (tag, attr) {
|
|
return createEl('<' + tag + ' xmlns="urn:schemas-microsoft.com:vml" class="spin-vml">', attr)
|
|
}
|
|
|
|
// No CSS transforms but VML support, add a CSS rule for VML elements:
|
|
sheet.addRule('.spin-vml', 'behavior:url(#default#VML)')
|
|
|
|
Spinner.prototype.lines = function (el, o) {
|
|
var r = o.scale * (o.length + o.width)
|
|
, s = o.scale * 2 * r
|
|
|
|
function grp () {
|
|
return css(
|
|
vml('group', {
|
|
coordsize: s + ' ' + s
|
|
, coordorigin: -r + ' ' + -r
|
|
})
|
|
, { width: s, height: s }
|
|
)
|
|
}
|
|
|
|
var margin = -(o.width + o.length) * o.scale * 2 + 'px'
|
|
, g = css(grp(), {position: 'absolute', top: margin, left: margin})
|
|
, i
|
|
|
|
function seg (i, dx, filter) {
|
|
ins(
|
|
g
|
|
, ins(
|
|
css(grp(), {rotation: 360 / o.lines * i + 'deg', left: ~~dx})
|
|
, ins(
|
|
css(
|
|
vml('roundrect', {arcsize: o.corners})
|
|
, { width: r
|
|
, height: o.scale * o.width
|
|
, left: o.scale * o.radius
|
|
, top: -o.scale * o.width >> 1
|
|
, filter: filter
|
|
}
|
|
)
|
|
, vml('fill', {color: getColor(o.color, i), opacity: o.opacity})
|
|
, vml('stroke', {opacity: 0}) // transparent stroke to fix color bleeding upon opacity change
|
|
)
|
|
)
|
|
)
|
|
}
|
|
|
|
if (o.shadow)
|
|
for (i = 1; i <= o.lines; i++) {
|
|
seg(i, -2, 'progid:DXImageTransform.Microsoft.Blur(pixelradius=2,makeshadow=1,shadowopacity=.3)')
|
|
}
|
|
|
|
for (i = 1; i <= o.lines; i++) seg(i)
|
|
return ins(el, g)
|
|
}
|
|
|
|
Spinner.prototype.opacity = function (el, i, val, o) {
|
|
var c = el.firstChild
|
|
o = o.shadow && o.lines || 0
|
|
if (c && i + o < c.childNodes.length) {
|
|
c = c.childNodes[i + o]; c = c && c.firstChild; c = c && c.firstChild
|
|
if (c) c.opacity = val
|
|
}
|
|
}
|
|
}
|
|
|
|
if (typeof document !== 'undefined') {
|
|
sheet = (function () {
|
|
var el = createEl('style', {type : 'text/css'})
|
|
ins(document.getElementsByTagName('head')[0], el)
|
|
return el.sheet || el.styleSheet
|
|
}())
|
|
|
|
var probe = css(createEl('group'), {behavior: 'url(#default#VML)'})
|
|
|
|
if (!vendor(probe, 'transform') && probe.adj) initVML()
|
|
else useCssAnimations = vendor(probe, 'animation')
|
|
}
|
|
|
|
return Spinner
|
|
|
|
}));
|