iwmlib/lib/pixi/timeline.js

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2019-08-08 12:06:16 +02:00
/* eslint-disable no-unused-vars */
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import { Cycle, Colors, Dates, isEmpty } from '../utils.js'
import { Capabilities } from '../capabilities.js'
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import { BitmapLabeledGraphics, FontInfo } from './labeledgraphics.js'
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export class Ticks {
get reservedPrefixes() {
return ['decade', 'year', 'month', 'day', 'hour', 'minute', 'second']
}
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static get largeTickSize() {
return 4.2
}
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get minWidth() {
return 10
}
format(available) {
return { year: '2-digit', timeZone: 'UTC' }
}
get minLabelWidth() {
return 44
}
get formatKey() {
return this.key
}
dateKey(date) {
return this.key + date.getFullYear()
}
*iter(start, end) {
let date = this.iterStart(start)
while (date <= end) {
yield date
date = this.next(date)
}
yield date
}
*iterRanges(range) {
for (let date of this.iter(range.start, range.end)) {
let next = this.next(date)
yield { start: date, end: next }
}
}
selectedRange(timeline, info) {
let first = null
let last = null
let visibleFirst = null
let visibleLast = null
let units = 0
for (let { start, end } of this.iterRanges(info)) {
if (timeline.visibleRange(start, end)) {
if (first == null) {
first = start
}
last = end
}
if (timeline.visibleDate(start) && timeline.visibleDate(end)) {
units += 1
if (visibleFirst == null) {
visibleFirst = start
}
visibleLast = end
}
}
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if (first == null) return info
return {
start: first,
end: last,
visibleStart: visibleFirst,
visibleEnd: visibleLast,
units: units
}
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}
drawTick(timeline, x, y, date) {
let visible = date > timeline.start && date < timeline.end
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if (!visible) return false
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timeline.drawTick(x)
return true
}
toLocaleString(date, format) {
return date.toLocaleDateString('de', format)
}
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draw(timeline, range, width, height, available, format, nextFormat, level, extraTicks = false) {
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let first = null
let last = null
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let keyedFormat = format ? format[this.formatKey] : null
let keyedNextFormat = nextFormat ? nextFormat[this.formatKey] : null
let redundant = nextFormat ? this.formatKey in nextFormat : false
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let fullyRedundant = keyedFormat != null && keyedFormat == keyedNextFormat
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let y = timeline.getY()
for (let { start, end } of this.iterRanges(range)) {
let x = timeline.toX(start)
let xx = x
let yy = y + timeline.tickLabelOffset(-1)
if (this.drawTick(timeline, x, y, start) && format) {
let key = this.dateKey(start)
let text = this.toLocaleString(start, format)
let align = 'center'
if (nextFormat) {
yy = y + timeline.tickLabelOffset(-1, 1)
align = 'left'
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timeline.drawTick(x, Ticks.largeTickSize)
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let nextX = timeline.toX(end) - 100
if (x < 0 && nextX > -100 && !redundant) {
xx = Math.min(4, nextX)
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} else {
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xx -= 2
}
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} else if (level > 0) {
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xx = x + available / 2
}
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if (!fullyRedundant) {
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timeline.ensureLabel(key, text, { x: xx, y: yy, align }, FontInfo.small)
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}
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if (extraTicks) timeline.drawTick(x, -level)
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}
if (timeline.visibleRange(start, end)) {
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if (first == null) first = start
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last = end
}
}
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if (first == null) return null
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return { start: first, end: last }
}
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drawExtra(timeline, range, size) {
for (let { start } of this.iterRanges(range)) {
if (timeline.visibleDate(start)) {
let x = timeline.toX(start)
timeline.drawTick(x, -size)
}
}
}
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}
export class DecadeTicks extends Ticks {
get milliseconds() {
return 10 * 365 * 24 * 60 * 60 * 1000
}
format(available) {
return { year: 'numeric', timeZone: 'UTC' }
}
selection(timeline, dates, selected) {
return dates
}
get key() {
return 'decade'
}
get formatKey() {
return 'year'
}
iterStart(start) {
let modulo = start.getFullYear() % 10
let year = start.getFullYear() - modulo
return Dates.create(year, 0, 1)
}
next(decade) {
return Dates.nextYear(decade, 10)
}
}
export class YearTicks extends Ticks {
get milliseconds() {
return 365 * 24 * 60 * 60 * 1000
}
format(available) {
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if (available < 44) return { year: '2-digit', timeZone: 'UTC' }
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return { year: 'numeric', timeZone: 'UTC' }
}
get minLabelWidth() {
return 22
}
get key() {
return 'year'
}
iterStart(start) {
return Dates.create(start.getFullYear(), 0, 1)
}
next(year) {
return Dates.nextYear(year)
}
}
export class MonthTicks extends Ticks {
get milliseconds() {
return (365 / 12) * 24 * 60 * 60 * 1000
}
format(available) {
let format = { month: 'narrow', timeZone: 'UTC' }
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if (available > 44) format.month = 'short'
if (available > 66) format.year = '2-digit'
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if (available > 100) {
format.month = 'long'
format.year = 'numeric'
}
return format
}
get minLabelWidth() {
return 32
}
get key() {
return 'month'
}
dateKey(date) {
return this.key + date.getFullYear() + date.getMonth()
}
iterStart(start) {
return Dates.create(start.getFullYear(), start.getMonth(), 1)
}
next(month) {
return Dates.nextMonth(month)
}
}
export class DayTicks extends Ticks {
get milliseconds() {
return 24 * 60 * 60 * 1000
}
format(available) {
let format = { day: 'numeric', timeZone: 'UTC' }
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if (available > 44) format.month = 'short'
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if (available > 100) {
format.month = 'long'
format.year = '2-digit'
}
if (available > 150) {
format.weekday = 'short'
}
if (available > 200) {
format.year = 'numeric'
format.weekday = 'long'
}
return format
}
get key() {
return 'day'
}
dateKey(date) {
return this.key + date.getFullYear() + date.getMonth() + date.getDate()
}
iterStart(start) {
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return Dates.create(start.getFullYear(), start.getMonth(), start.getDate())
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}
next(date) {
return Dates.nextDay(date)
}
}
export class HourTicks extends Ticks {
get milliseconds() {
return 60 * 60 * 1000
}
format(available) {
let format = {}
if (available > 44) {
format.hour = '2-digit'
}
if (available > 100) {
format.day = '2-digit'
format.month = '2-digit'
format.year = '2-digit'
}
if (available > 150) {
format.weekday = 'short'
format.month = 'short'
}
if (available > 200) {
format.day = 'numeric'
format.year = 'numeric'
format.month = 'long'
format.weekday = 'long'
}
return format
}
get key() {
return 'hour'
}
dateKey(date) {
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return this.key + date.getFullYear() + date.getMonth() + date.getDate() + date.getHours()
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}
iterStart(start) {
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return Dates.create(start.getFullYear(), start.getMonth(), start.getDate(), start.getHours())
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}
next(date) {
return Dates.nextHour(date)
}
toLocaleString(date, format) {
return date.toLocaleTimeString('de', format)
}
}
export class MinuteTicks extends Ticks {
get milliseconds() {
return 60 * 1000
}
format(available) {
let format = { minute: 'numeric', timeZone: 'UTC' }
if (available > 44) {
format.hour = 'numeric'
format.minute = 'numeric'
}
if (available > 100) {
format.month = 'short'
format.year = '2-digit'
}
if (available > 150) {
format.weekday = 'short'
}
if (available > 200) {
format.year = 'numeric'
format.weekday = 'long'
}
return format
}
get key() {
return 'minute'
}
dateKey(date) {
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return this.key + date.getFullYear() + date.getMonth() + date.getDate() + date.getHours() + date.getMinutes()
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}
iterStart(start) {
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return Dates.create(
start.getFullYear(),
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start.getMonth(),
start.getDate(),
start.getHours(),
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start.getMinutes()
)
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}
next(date) {
return Dates.nextMinute(date)
}
toLocaleString(date, format) {
return date.toLocaleTimeString('de', format)
}
}
export class TimeTicks {
constructor(...ticks) {
this.ticks = ticks
}
selectedRange(timeline) {
let info = { start: timeline.start, end: timeline.end, units: 0 }
for (let ticks of this.ticks) {
info = ticks.selectedRange(timeline, info)
if (info.units > 1) {
timeline.selection = [info.visibleStart, info.visibleEnd]
return
}
}
timeline.selection = [info.start, info.end]
}
draw(timeline, width, height) {
let range = timeline
let start = timeline.toX(range.start)
let end = timeline.toX(range.end)
let size = end - start
let duration = timeline.end - timeline.start
let formats = new Map()
let nextFormats = new Map()
let availables = new Map()
let previous = null
let visible = []
for (let ticks of this.ticks) {
let amount = ticks.milliseconds / duration
let available = amount * size
availables.set(ticks, available)
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if (available < ticks.minWidth) break
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formats.set(ticks, available < ticks.minLabelWidth ? null : ticks.format(available))
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nextFormats.set(previous, formats.get(ticks))
previous = ticks
visible.push(ticks)
}
let level = 0
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let ranges = []
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for (let ticks of visible) {
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if (range == null) continue
range = ticks.draw(
timeline,
range,
width,
height,
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availables.get(ticks),
formats.get(ticks),
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nextFormats.get(ticks),
level
)
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if (range) {
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ranges.push({ ticks, range })
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}
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level += 1
}
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let extraLevel = ranges.length - 1
let extraStart = extraLevel
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for (let { ticks, range } of ranges) {
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ticks.drawExtra(timeline, range, extraLevel)
extraLevel -= 1
if (extraLevel <= 0) {
continue
}
}
timeline.drawTick(start, Ticks.largeTickSize)
timeline.drawTick(start, -extraStart)
timeline.drawTick(end, Ticks.largeTickSize)
timeline.drawTick(end, -extraStart)
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}
}
export class ColorRanges {
constructor(label, color, ranges) {
this.label = label
this.color = color
this.ranges = ranges
}
draw(timeline, width, height, size = 12) {
let minimum = 1 / Capabilities.devicePixelRatio
let h2 = size
timeline.lineStyle(size, this.color)
for (let range of this.ranges) {
if (range.to === null) {
range.to = Dates.nextDay(range.from)
}
let start = timeline.toX(range.from)
let end = timeline.toX(range.to)
if (end < start + minimum) {
end = start + minimum
}
timeline.moveTo(start, h2)
timeline.lineTo(end, h2)
}
}
}
export default class Timeline extends BitmapLabeledGraphics {
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constructor(width, height, { ticks = null, baseLine = 0.5, showRange = true, throwDamping = 0.95 } = {}) {
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super()
this.wantedWidth = width
this.wantedHeight = height
this.extraLeft = 0
this.extraRight = 0
this.inset = 5
this.showRange = showRange
this.baseLine = baseLine
this.tickHeight = 4
this.zoom = 1
this.minZoom = 1
this.maxZoom = 12000
this.scroll = 0
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this.draggable = false
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this.deltas = []
this.labelDates = []
this.colorRanges = []
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this.rangeColors = new Cycle(Colors.eminence, Colors.steelblue, Colors.ochre, Colors.turquoise)
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this.callbacks = []
this.onTapCallbacks = []
this.onDoubleTapCallbacks = []
this.onLongPressCallbacks = []
this.progress = null
this.start = null
this.end = null
this.selection = null
this.autoScroll = false
this.direction = -1
this.throwDamping = throwDamping
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this.timeticks = ticks || new TimeTicks(new DecadeTicks(), new YearTicks(), new MonthTicks(), new DayTicks())
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this.labelPrefix = '__'
}
updateSelection() {
if (this.visibleDate(this.start) && this.visibleDate(this.end)) {
this.selection = [this.start, this.end]
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} else {
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this.timeticks.selectedRange(this)
}
return this.selection
}
addCallback(callback) {
this.callbacks.push(callback)
}
addTabCallback(callback) {
this.onTapCallbacks.push(callback)
}
addDoubleTapCallback(callback) {
this.onDoubleTapCallbacks.push(callback)
}
addLongPressCallback(callback) {
this.onLongPressCallbacks.push(callback)
}
addLabels(labels) {
this.labelDates = labels
}
range(start, end) {
this.start = start
this.end = end
}
draw(width, height) {
this.wantedWidth = width
this.wantedHeight = height
this.redraw()
}
updateColorRanges(w, h) {
let xx = w - this.inset
let size = FontInfo.small.fontSize
let yy = h - size
for (let i = this.colorRanges.length - 1; i >= 0; i--) {
let cr = this.colorRanges[i]
let label = cr.label
cr.draw(this, w, h)
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let current = this.ensureLabel(
'colorRange:' + label,
label,
{ x: xx, y: yy, align: 'right' },
FontInfo.small
)
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let r = current.getBounds()
xx -= r.width + 16
this.lineStyle(size, cr.color)
this.moveTo(xx, yy)
this.lineTo(xx + size, yy)
xx -= size + 4
}
}
drawSelectedRamge(selected) {
this.lineStyle(2, app.theme.primaryColor)
let start = this.toX(selected[0])
let end = this.toX(selected[1])
this.moveTo(start, 0)
this.lineTo(end, 0)
this.drawTick(start, -1.5, 0)
this.drawTick(end, -1.5, 0)
}
redraw() {
this.clear()
let h = this.wantedHeight
let w = this.wantedWidth
let y = this.getY()
this.prepareLabels()
this.updateColorRanges(w, h)
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this.lineStyle(2, 0xffffff)
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if (this.start != null && this.end != null) {
this.moveTo(this.toX(this.start), y)
this.lineTo(this.toX(this.end), y)
this.updateTicksAndLabels(w, h)
this.updateSelection()
let selected = this.selection
if (selected[0] != this.start && selected[1] != this.end) {
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if (this.showRange) this.drawSelectedRamge(selected)
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}
for (let callback of this.callbacks) {
callback(this.scroll, this.zoom, this.selection)
}
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} else {
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this.moveTo(this.inset, y)
this.lineTo(w - this.inset, y)
}
if (this.progress != null && this.progress < 1) {
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this.lineStyle(2, 0xccccff)
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this.moveTo(this.inset, y)
this.lineTo((w - this.inset) * this.progress, y)
}
}
totalWidth(bounded = false) {
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let w = this.wantedWidth - 2 * this.inset
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return w * this.validZoom(this.zoom, bounded)
}
validZoom(zoom, bounded = true) {
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let overshoot = bounded ? 1.0 : 2.0
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zoom = Math.max(zoom, this.minZoom / overshoot)
zoom = Math.min(zoom, this.maxZoom * overshoot)
return zoom
}
getY() {
return this.wantedHeight * this.baseLine
}
toX(date) {
let total = this.end - this.start
let offset = this.inset + this.scroll
let width = this.totalWidth()
let delta = date - this.start
let ratio = delta / total
return offset + ratio * width
}
fromX(value) {
let total = this.end - this.start
let offset = this.inset + this.scroll
let width = this.totalWidth()
let ratio = (value - offset) / width
let time = this.start.getTime() + total * ratio
let date = new Date(time)
return date
}
drawTick(x, direction = 1, y = null) {
if (y == null) {
y = this.getY()
}
this.moveTo(x, y)
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this.lineTo(x, y - this.tickHeight * direction * this.direction)
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}
prepareLabels() {
for (let key of this.labels.keys()) {
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if (!key.startsWith(this.labelPrefix)) this.labels.get(key).visible = false
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}
}
updateTicksAndLabels(width, height) {
this.drawTick(this.toX(this.start))
this.drawTick(this.toX(this.end))
this.timeticks.draw(this, width, height)
this.updateLabels(width, height)
}
visibleDate(date, offset = 0) {
if (date >= this.start && date <= this.end) {
let x = this.toX(date) + offset
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return x > 0 && x < this.wantedWidth
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}
return false
}
visibleRange(start, end) {
let x = this.toX(start)
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if (x > this.wantedWidth) return false
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x = this.toX(end)
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if (x < 0) return false
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return true
}
tickLabelOffset(direction = 1, level = 0) {
let fs = FontInfo.small.fontSize
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let dh = fs + level * (fs + 2)
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return this.direction * direction * dh
}
updateLabels(width, height) {
let h2 = height / 2
if (this.labelDates) {
let last = null
let y = h2 + this.tickLabelOffset()
for (let i = this.labelDates.length - 1; i >= 0; i--) {
let [label, date] = this.labelDates[i]
let align = 'center' // (last == null) ? 'right' : 'left'
let x = this.toX(date)
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let current = this.ensureLabel(
this.labelPrefix + label,
label,
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{
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x: x,
y: y,
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align
},
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FontInfo.small
)
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let r = current.getBounds()
current.visible = !(last != null && r.x + r.width > last.x)
if (current.visible) {
this.drawTick(x, -1)
last = r
}
}
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} else {
let start = this.start.toLocaleDateString('de', {
year: 'numeric',
month: 'numeric',
day: 'numeric'
})
let end = this.end.toLocaleDateString('de', {
year: 'numeric',
month: 'numeric',
day: 'numeric'
})
this.ensureLabel(this.labelPrefix + 'start', start, {
x: this.toX(this.start),
y: h2
})
this.ensureLabel(this.labelPrefix + 'end', end, {
x: this.toX(this.end),
y: h2,
align: 'right'
})
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}
}
onZoom(zoom, anchor) {
let date = this.fromX(anchor.x)
let newZoom = this.validZoom(this.zoom * zoom, false)
this.zoom = newZoom
let newX = this.toX(date)
this.scroll += anchor.x - newX
}
onStart(event, interaction) {
this.killTweens()
this.deltas = []
this.validScroll()
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// if (typeof ThrowPropsPlugin != 'undefined') {
// ThrowPropsPlugin.track(this, 'delta')
// }
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}
onMove(event, interaction) {
let delta = interaction.delta()
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if (delta == null) {
return
}
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this.scroll += delta.x
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if (this.draggable) {
this.y += delta.y
}
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while (this.deltas.length > 10) {
this.deltas.pop(0)
}
this.deltas.push(delta.x)
if (interaction.current.size > 1) {
this.onZoom(delta.zoom, delta.about)
}
this.redraw()
}
onEnd(event, interaction) {
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// if (typeof ThrowPropsPlugin != 'undefined') {
// let vel = ThrowPropsPlugin.getVelocity(this, 'delta')
// ThrowPropsPlugin.untrack(this)
// }
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this.killTweens()
this.redraw()
let delta = 0
for (let d of this.deltas) {
delta += d
}
if (this.deltas.length > 0) {
delta /= this.deltas.length
}
this.autoScroll = true
let anchor = interaction.current.mean()
this.keepInBounds(delta, anchor)
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for (let key of interaction.ended.keys()) {
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if (interaction.isDoubleTap(key)) {
this.onDoubleTap(event, interaction, key)
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} else if (interaction.isTap(key)) {
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this.onTap(event, interaction, key)
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} else if (interaction.isLongPress(key)) {
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this.onLongPress(event, interaction, key)
}
}
}
onLongPress(event, interaction, key) {
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for (let callback of this.onLongPressCallbacks) {
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callback(event, interaction, key)
}
}
onTap(event, interaction, key) {
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for (let callback of this.onTapCallbacks) {
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callback(event, interaction, key)
}
}
onDoubleTap(event, interaction, key) {
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for (let callback of this.onDoubleTapCallbacks) {
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callback(event, interaction, key)
}
}
_scrollMinimum(bounded) {
let total = this.totalWidth(bounded)
return -total + this.wantedWidth - 2 * this.inset
}
_scrollMaximum(bounded) {
let total = this.totalWidth(bounded)
let limit = this.wantedWidth
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if (total > limit) return 0
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let w = limit - 2 * this.inset
return (w - total) / 2
}
scrollMinimum(bounded) {
return this._scrollMinimum(bounded) - this.extraRight
}
scrollMaximum(bounded) {
return this._scrollMaximum(bounded) + this.extraLeft
}
killTweens() {
TweenLite.killTweensOf(this)
this.autoScroll = false
}
validScroll(bounded = true) {
let minimum = this.scrollMinimum(bounded)
let maximum = this.scrollMaximum(bounded)
if (this.scroll < minimum) {
this.scroll = minimum
}
if (this.scroll > maximum) {
this.scroll = maximum
}
}
keepInBounds(delta, anchor) {
let bounded = true
let minimum = this.scrollMinimum(bounded)
let maximum = this.scrollMaximum(bounded)
let tweens = {}
if (this.zoom > this.maxZoom) {
tweens.zoom = this.maxZoom
let date = this.fromX(anchor.x)
let oldZoom = this.zoom
this.zoom = this.maxZoom
let newX = this.toX(date)
tweens.scroll = this.scroll + anchor.x - newX
this.zoom = oldZoom
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} else {
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if (this.zoom < this.minZoom) {
tweens.zoom = this.minZoom
}
if (this.scroll > maximum) {
tweens.scroll = maximum
}
if (this.scroll < minimum) {
tweens.scroll = minimum
}
}
if (!isEmpty(tweens)) {
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tweens.onUpdate = () => {
this.redraw()
}
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TweenLite.to(this, 0.5, tweens).delay(0.1)
return
}
this.scroll += delta
delta *= this.throwDamping
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this.redraw()
if (Math.abs(delta) > 1 && this.autoScroll) {
setTimeout(() => this.keepInBounds(delta, anchor), 1000 / 100)
}
}
onMouseWheel(event) {
this.killTweens()
let direction = event.detail < 0 || event.wheelDelta > 0
let anchor = { x: event.clientX, y: event.clientY }
const zoomFactor = 1.5
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this.onZoom(direction ? zoomFactor : 1 / zoomFactor, anchor)
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this.redraw()
this.keepInBounds(0, anchor)
}
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showRanges(ranges, label = 'Untitled', color = null) {
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for (let cr of this.colorRanges) {
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if (cr.label == label) return
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}
while (this.colorRanges.length >= this.rangeColors.length) {
this.colorRanges.shift()
}
this.colorRanges.push(new ColorRanges(label, color, ranges))
this.redraw()
}
}