apexcharts
Version:
A JavaScript Chart Library
1,029 lines (900 loc) • 28 kB
JavaScript
import Animations from './Animations'
import Filters from './Filters'
import Utils from '../utils/Utils'
/**
* ApexCharts Graphics Class for all drawing operations.
*
* @module Graphics
**/
class Graphics {
constructor(ctx) {
this.ctx = ctx
this.w = ctx.w
}
/*****************************************************************************
* *
* SVG Path Rounding Function *
* Copyright (C) 2014 Yona Appletree *
* *
* Licensed under the Apache License, Version 2.0 (the "License"); *
* you may not use this file except in compliance with the License. *
* You may obtain a copy of the License at *
* *
* http://www.apache.org/licenses/LICENSE-2.0 *
* *
* Unless required by applicable law or agreed to in writing, software *
* distributed under the License is distributed on an "AS IS" BASIS, *
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. *
* See the License for the specific language governing permissions and *
* limitations under the License. *
* *
*****************************************************************************/
/**
* SVG Path rounding function. Takes an input path string and outputs a path
* string where all line-line corners have been rounded. Only supports absolute
* commands at the moment.
*
* @param pathString The SVG input path
* @param radius The amount to round the corners, either a value in the SVG
* coordinate space, or, if useFractionalRadius is true, a value
* from 0 to 1.
* @returns A new SVG path string with the rounding
*/
roundPathCorners(pathString, radius) {
if (pathString.indexOf('NaN') > -1) pathString = ''
function moveTowardsLength(movingPoint, targetPoint, amount) {
var width = targetPoint.x - movingPoint.x
var height = targetPoint.y - movingPoint.y
var distance = Math.sqrt(width * width + height * height)
return moveTowardsFractional(
movingPoint,
targetPoint,
Math.min(1, amount / distance)
)
}
function moveTowardsFractional(movingPoint, targetPoint, fraction) {
return {
x: movingPoint.x + (targetPoint.x - movingPoint.x) * fraction,
y: movingPoint.y + (targetPoint.y - movingPoint.y) * fraction,
}
}
// Adjusts the ending position of a command
function adjustCommand(cmd, newPoint) {
if (cmd.length > 2) {
cmd[cmd.length - 2] = newPoint.x
cmd[cmd.length - 1] = newPoint.y
}
}
// Gives an {x, y} object for a command's ending position
function pointForCommand(cmd) {
return {
x: parseFloat(cmd[cmd.length - 2]),
y: parseFloat(cmd[cmd.length - 1]),
}
}
// Split apart the path, handing concatonated letters and numbers
var pathParts = pathString.split(/[,\s]/).reduce(function (parts, part) {
var match = part.match('([a-zA-Z])(.+)')
if (match) {
parts.push(match[1])
parts.push(match[2])
} else {
parts.push(part)
}
return parts
}, [])
// Group the commands with their arguments for easier handling
var commands = pathParts.reduce(function (commands, part) {
if (parseFloat(part) == part && commands.length) {
commands[commands.length - 1].push(part)
} else {
commands.push([part])
}
return commands
}, [])
// The resulting commands, also grouped
var resultCommands = []
if (commands.length > 1) {
var startPoint = pointForCommand(commands[0])
// Handle the close path case with a "virtual" closing line
var virtualCloseLine = null
if (commands[commands.length - 1][0] == 'Z' && commands[0].length > 2) {
virtualCloseLine = ['L', startPoint.x, startPoint.y]
commands[commands.length - 1] = virtualCloseLine
}
// We always use the first command (but it may be mutated)
resultCommands.push(commands[0])
for (var cmdIndex = 1; cmdIndex < commands.length; cmdIndex++) {
var prevCmd = resultCommands[resultCommands.length - 1]
var curCmd = commands[cmdIndex]
// Handle closing case
var nextCmd =
curCmd == virtualCloseLine ? commands[1] : commands[cmdIndex + 1]
// Nasty logic to decide if this path is a candidite.
if (
nextCmd &&
prevCmd &&
prevCmd.length > 2 &&
curCmd[0] == 'L' &&
nextCmd.length > 2 &&
nextCmd[0] == 'L'
) {
// Calc the points we're dealing with
var prevPoint = pointForCommand(prevCmd)
var curPoint = pointForCommand(curCmd)
var nextPoint = pointForCommand(nextCmd)
// The start and end of the cuve are just our point moved towards the previous and next points, respectivly
var curveStart, curveEnd
curveStart = moveTowardsLength(curPoint, prevPoint, radius)
curveEnd = moveTowardsLength(curPoint, nextPoint, radius)
// Adjust the current command and add it
adjustCommand(curCmd, curveStart)
curCmd.origPoint = curPoint
resultCommands.push(curCmd)
// The curve control points are halfway between the start/end of the curve and
// the original point
var startControl = moveTowardsFractional(curveStart, curPoint, 0.5)
var endControl = moveTowardsFractional(curPoint, curveEnd, 0.5)
// Create the curve
var curveCmd = [
'C',
startControl.x,
startControl.y,
endControl.x,
endControl.y,
curveEnd.x,
curveEnd.y,
]
// Save the original point for fractional calculations
curveCmd.origPoint = curPoint
resultCommands.push(curveCmd)
} else {
// Pass through commands that don't qualify
resultCommands.push(curCmd)
}
}
// Fix up the starting point and restore the close path if the path was orignally closed
if (virtualCloseLine) {
var newStartPoint = pointForCommand(
resultCommands[resultCommands.length - 1]
)
resultCommands.push(['Z'])
adjustCommand(resultCommands[0], newStartPoint)
}
} else {
resultCommands = commands
}
return resultCommands.reduce(function (str, c) {
return str + c.join(' ') + ' '
}, '')
}
drawLine(
x1,
y1,
x2,
y2,
lineColor = '#a8a8a8',
dashArray = 0,
strokeWidth = null,
strokeLineCap = 'butt'
) {
let w = this.w
let line = w.globals.dom.Paper.line().attr({
x1,
y1,
x2,
y2,
stroke: lineColor,
'stroke-dasharray': dashArray,
'stroke-width': strokeWidth,
'stroke-linecap': strokeLineCap,
})
return line
}
drawRect(
x1 = 0,
y1 = 0,
x2 = 0,
y2 = 0,
radius = 0,
color = '#fefefe',
opacity = 1,
strokeWidth = null,
strokeColor = null,
strokeDashArray = 0
) {
let w = this.w
let rect = w.globals.dom.Paper.rect()
rect.attr({
x: x1,
y: y1,
width: x2 > 0 ? x2 : 0,
height: y2 > 0 ? y2 : 0,
rx: radius,
ry: radius,
opacity,
'stroke-width': strokeWidth !== null ? strokeWidth : 0,
stroke: strokeColor !== null ? strokeColor : 'none',
'stroke-dasharray': strokeDashArray,
})
// fix apexcharts.js#1410
rect.node.setAttribute('fill', color)
return rect
}
drawPolygon(
polygonString,
stroke = '#e1e1e1',
strokeWidth = 1,
fill = 'none'
) {
const w = this.w
const polygon = w.globals.dom.Paper.polygon(polygonString).attr({
fill,
stroke,
'stroke-width': strokeWidth,
})
return polygon
}
drawCircle(radius, attrs = null) {
const w = this.w
if (radius < 0) radius = 0
const c = w.globals.dom.Paper.circle(radius * 2)
if (attrs !== null) {
c.attr(attrs)
}
return c
}
drawPath({
d = '',
stroke = '#a8a8a8',
strokeWidth = 1,
fill,
fillOpacity = 1,
strokeOpacity = 1,
classes,
strokeLinecap = null,
strokeDashArray = 0,
}) {
let w = this.w
if (strokeLinecap === null) {
strokeLinecap = w.config.stroke.lineCap
}
if (d.indexOf('undefined') > -1 || d.indexOf('NaN') > -1) {
d = `M 0 ${w.globals.gridHeight}`
}
let p = w.globals.dom.Paper.path(d).attr({
fill,
'fill-opacity': fillOpacity,
stroke,
'stroke-opacity': strokeOpacity,
'stroke-linecap': strokeLinecap,
'stroke-width': strokeWidth,
'stroke-dasharray': strokeDashArray,
class: classes,
})
return p
}
group(attrs = null) {
const w = this.w
const g = w.globals.dom.Paper.group()
if (attrs !== null) {
g.attr(attrs)
}
return g
}
move(x, y) {
let move = ['M', x, y].join(' ')
return move
}
line(x, y, hORv = null) {
let line = null
if (hORv === null) {
line = [' L', x, y].join(' ')
} else if (hORv === 'H') {
line = [' H', x].join(' ')
} else if (hORv === 'V') {
line = [' V', y].join(' ')
}
return line
}
curve(x1, y1, x2, y2, x, y) {
let curve = ['C', x1, y1, x2, y2, x, y].join(' ')
return curve
}
quadraticCurve(x1, y1, x, y) {
let curve = ['Q', x1, y1, x, y].join(' ')
return curve
}
arc(rx, ry, axisRotation, largeArcFlag, sweepFlag, x, y, relative = false) {
let coord = 'A'
if (relative) coord = 'a'
let arc = [coord, rx, ry, axisRotation, largeArcFlag, sweepFlag, x, y].join(
' '
)
return arc
}
/**
* @memberof Graphics
* @param {object}
* i = series's index
* realIndex = realIndex is series's actual index when it was drawn time. After several redraws, the iterating "i" may change in loops, but realIndex doesn't
* pathFrom = existing pathFrom to animateTo
* pathTo = new Path to which d attr will be animated from pathFrom to pathTo
* stroke = line Color
* strokeWidth = width of path Line
* fill = it can be gradient, single color, pattern or image
* animationDelay = how much to delay when starting animation (in milliseconds)
* dataChangeSpeed = for dynamic animations, when data changes
* className = class attribute to add
* @return {object} svg.js path object
**/
renderPaths({
j,
realIndex,
pathFrom,
pathTo,
stroke,
strokeWidth,
strokeLinecap,
fill,
animationDelay,
initialSpeed,
dataChangeSpeed,
className,
shouldClipToGrid = true,
bindEventsOnPaths = true,
drawShadow = true,
}) {
let w = this.w
const filters = new Filters(this.ctx)
const anim = new Animations(this.ctx)
let initialAnim = this.w.config.chart.animations.enabled
let dynamicAnim =
initialAnim && this.w.config.chart.animations.dynamicAnimation.enabled
let d
let shouldAnimate = !!(
(initialAnim && !w.globals.resized) ||
(dynamicAnim && w.globals.dataChanged && w.globals.shouldAnimate)
)
if (shouldAnimate) {
d = pathFrom
} else {
d = pathTo
w.globals.animationEnded = true
}
let strokeDashArrayOpt = w.config.stroke.dashArray
let strokeDashArray = 0
if (Array.isArray(strokeDashArrayOpt)) {
strokeDashArray = strokeDashArrayOpt[realIndex]
} else {
strokeDashArray = w.config.stroke.dashArray
}
let el = this.drawPath({
d,
stroke,
strokeWidth,
fill,
fillOpacity: 1,
classes: className,
strokeLinecap,
strokeDashArray,
})
el.attr('index', realIndex)
if (shouldClipToGrid) {
el.attr({
'clip-path': `url(#gridRectMask${w.globals.cuid})`,
})
}
// const defaultFilter = el.filterer
if (w.config.states.normal.filter.type !== 'none') {
filters.getDefaultFilter(el, realIndex)
} else {
if (w.config.chart.dropShadow.enabled && drawShadow) {
if (
!w.config.chart.dropShadow.enabledOnSeries ||
(w.config.chart.dropShadow.enabledOnSeries &&
w.config.chart.dropShadow.enabledOnSeries.indexOf(realIndex) !== -1)
) {
const shadow = w.config.chart.dropShadow
filters.dropShadow(el, shadow, realIndex)
}
}
}
if (bindEventsOnPaths) {
el.node.addEventListener('mouseenter', this.pathMouseEnter.bind(this, el))
el.node.addEventListener('mouseleave', this.pathMouseLeave.bind(this, el))
el.node.addEventListener('mousedown', this.pathMouseDown.bind(this, el))
}
el.attr({
pathTo,
pathFrom,
})
const defaultAnimateOpts = {
el,
j,
realIndex,
pathFrom,
pathTo,
fill,
strokeWidth,
delay: animationDelay,
}
if (initialAnim && !w.globals.resized && !w.globals.dataChanged) {
anim.animatePathsGradually({
...defaultAnimateOpts,
speed: initialSpeed,
})
} else {
if (w.globals.resized || !w.globals.dataChanged) {
anim.showDelayedElements()
}
}
if (w.globals.dataChanged && dynamicAnim && shouldAnimate) {
anim.animatePathsGradually({
...defaultAnimateOpts,
speed: dataChangeSpeed,
})
}
return el
}
drawPattern(
style,
width,
height,
stroke = '#a8a8a8',
strokeWidth = 0,
opacity = 1
) {
let w = this.w
let p = w.globals.dom.Paper.pattern(width, height, (add) => {
if (style === 'horizontalLines') {
add
.line(0, 0, height, 0)
.stroke({ color: stroke, width: strokeWidth + 1 })
} else if (style === 'verticalLines') {
add
.line(0, 0, 0, width)
.stroke({ color: stroke, width: strokeWidth + 1 })
} else if (style === 'slantedLines') {
add
.line(0, 0, width, height)
.stroke({ color: stroke, width: strokeWidth })
} else if (style === 'squares') {
add
.rect(width, height)
.fill('none')
.stroke({ color: stroke, width: strokeWidth })
} else if (style === 'circles') {
add
.circle(width)
.fill('none')
.stroke({ color: stroke, width: strokeWidth })
}
})
return p
}
drawGradient(
style,
gfrom,
gto,
opacityFrom,
opacityTo,
size = null,
stops = null,
colorStops = null,
i = 0
) {
let w = this.w
let g
if (gfrom.length < 9 && gfrom.indexOf('#') === 0) {
// if the hex contains alpha and is of 9 digit, skip the opacity
gfrom = Utils.hexToRgba(gfrom, opacityFrom)
}
if (gto.length < 9 && gto.indexOf('#') === 0) {
gto = Utils.hexToRgba(gto, opacityTo)
}
let stop1 = 0
let stop2 = 1
let stop3 = 1
let stop4 = null
if (stops !== null) {
stop1 = typeof stops[0] !== 'undefined' ? stops[0] / 100 : 0
stop2 = typeof stops[1] !== 'undefined' ? stops[1] / 100 : 1
stop3 = typeof stops[2] !== 'undefined' ? stops[2] / 100 : 1
stop4 = typeof stops[3] !== 'undefined' ? stops[3] / 100 : null
}
let radial = !!(
w.config.chart.type === 'donut' ||
w.config.chart.type === 'pie' ||
w.config.chart.type === 'polarArea' ||
w.config.chart.type === 'bubble'
)
if (colorStops === null || colorStops.length === 0) {
g = w.globals.dom.Paper.gradient(radial ? 'radial' : 'linear', (stop) => {
stop.at(stop1, gfrom, opacityFrom)
stop.at(stop2, gto, opacityTo)
stop.at(stop3, gto, opacityTo)
if (stop4 !== null) {
stop.at(stop4, gfrom, opacityFrom)
}
})
} else {
g = w.globals.dom.Paper.gradient(radial ? 'radial' : 'linear', (stop) => {
let gradientStops = Array.isArray(colorStops[i])
? colorStops[i]
: colorStops
gradientStops.forEach((s) => {
stop.at(s.offset / 100, s.color, s.opacity)
})
})
}
if (!radial) {
if (style === 'vertical') {
g.from(0, 0).to(0, 1)
} else if (style === 'diagonal') {
g.from(0, 0).to(1, 1)
} else if (style === 'horizontal') {
g.from(0, 1).to(1, 1)
} else if (style === 'diagonal2') {
g.from(1, 0).to(0, 1)
}
} else {
let offx = w.globals.gridWidth / 2
let offy = w.globals.gridHeight / 2
if (w.config.chart.type !== 'bubble') {
g.attr({
gradientUnits: 'userSpaceOnUse',
cx: offx,
cy: offy,
r: size,
})
} else {
g.attr({
cx: 0.5,
cy: 0.5,
r: 0.8,
fx: 0.2,
fy: 0.2,
})
}
}
return g
}
getTextBasedOnMaxWidth({ text, maxWidth, fontSize, fontFamily }) {
const tRects = this.getTextRects(text, fontSize, fontFamily)
const wordWidth = tRects.width / text.length
const wordsBasedOnWidth = Math.floor(maxWidth / wordWidth)
if (maxWidth < tRects.width) {
return text.slice(0, wordsBasedOnWidth - 3) + '...'
}
return text
}
drawText({
x,
y,
text,
textAnchor,
fontSize,
fontFamily,
fontWeight,
foreColor,
opacity,
maxWidth,
cssClass = '',
isPlainText = true,
dominantBaseline = 'auto',
}) {
let w = this.w
if (typeof text === 'undefined') text = ''
let truncatedText = text
if (!textAnchor) {
textAnchor = 'start'
}
if (!foreColor || !foreColor.length) {
foreColor = w.config.chart.foreColor
}
fontFamily = fontFamily || w.config.chart.fontFamily
fontSize = fontSize || '11px'
fontWeight = fontWeight || 'regular'
const commonProps = {
maxWidth,
fontSize,
fontFamily,
}
let elText
if (Array.isArray(text)) {
elText = w.globals.dom.Paper.text((add) => {
for (let i = 0; i < text.length; i++) {
truncatedText = text[i]
if (maxWidth) {
truncatedText = this.getTextBasedOnMaxWidth({
text: text[i],
...commonProps,
})
}
i === 0
? add.tspan(truncatedText)
: add.tspan(truncatedText).newLine()
}
})
} else {
if (maxWidth) {
truncatedText = this.getTextBasedOnMaxWidth({
text,
...commonProps,
})
}
elText = isPlainText
? w.globals.dom.Paper.plain(text)
: w.globals.dom.Paper.text((add) => add.tspan(truncatedText))
}
elText.attr({
x,
y,
'text-anchor': textAnchor,
'dominant-baseline': dominantBaseline,
'font-size': fontSize,
'font-family': fontFamily,
'font-weight': fontWeight,
fill: foreColor,
class: 'apexcharts-text ' + cssClass,
})
elText.node.style.fontFamily = fontFamily
elText.node.style.opacity = opacity
return elText
}
drawMarker(x, y, opts) {
x = x || 0
let size = opts.pSize || 0
let elPoint = null
if (opts.shape === 'square' || opts.shape === 'rect') {
let radius = opts.pRadius === undefined ? size / 2 : opts.pRadius
if (y === null || !size) {
size = 0
radius = 0
}
let nSize = size * 1.2 + radius
let p = this.drawRect(nSize, nSize, nSize, nSize, radius)
p.attr({
x: x - nSize / 2,
y: y - nSize / 2,
cx: x,
cy: y,
class: opts.class ? opts.class : '',
fill: opts.pointFillColor,
'fill-opacity': opts.pointFillOpacity ? opts.pointFillOpacity : 1,
stroke: opts.pointStrokeColor,
'stroke-width': opts.pointStrokeWidth ? opts.pointStrokeWidth : 0,
'stroke-opacity': opts.pointStrokeOpacity ? opts.pointStrokeOpacity : 1,
})
elPoint = p
} else if (opts.shape === 'circle' || !opts.shape) {
if (!Utils.isNumber(y)) {
size = 0
y = 0
}
// let nSize = size - opts.pRadius / 2 < 0 ? 0 : size - opts.pRadius / 2
elPoint = this.drawCircle(size, {
cx: x,
cy: y,
class: opts.class ? opts.class : '',
stroke: opts.pointStrokeColor,
fill: opts.pointFillColor,
'fill-opacity': opts.pointFillOpacity ? opts.pointFillOpacity : 1,
'stroke-width': opts.pointStrokeWidth ? opts.pointStrokeWidth : 0,
'stroke-opacity': opts.pointStrokeOpacity ? opts.pointStrokeOpacity : 1,
})
}
return elPoint
}
pathMouseEnter(path, e) {
let w = this.w
const filters = new Filters(this.ctx)
const i = parseInt(path.node.getAttribute('index'), 10)
const j = parseInt(path.node.getAttribute('j'), 10)
if (typeof w.config.chart.events.dataPointMouseEnter === 'function') {
w.config.chart.events.dataPointMouseEnter(e, this.ctx, {
seriesIndex: i,
dataPointIndex: j,
w,
})
}
this.ctx.events.fireEvent('dataPointMouseEnter', [
e,
this.ctx,
{ seriesIndex: i, dataPointIndex: j, w },
])
if (w.config.states.active.filter.type !== 'none') {
if (path.node.getAttribute('selected') === 'true') {
return
}
}
if (w.config.states.hover.filter.type !== 'none') {
if (!w.globals.isTouchDevice) {
let hoverFilter = w.config.states.hover.filter
filters.applyFilter(path, i, hoverFilter.type, hoverFilter.value)
}
}
}
pathMouseLeave(path, e) {
let w = this.w
const filters = new Filters(this.ctx)
const i = parseInt(path.node.getAttribute('index'), 10)
const j = parseInt(path.node.getAttribute('j'), 10)
if (typeof w.config.chart.events.dataPointMouseLeave === 'function') {
w.config.chart.events.dataPointMouseLeave(e, this.ctx, {
seriesIndex: i,
dataPointIndex: j,
w,
})
}
this.ctx.events.fireEvent('dataPointMouseLeave', [
e,
this.ctx,
{ seriesIndex: i, dataPointIndex: j, w },
])
if (w.config.states.active.filter.type !== 'none') {
if (path.node.getAttribute('selected') === 'true') {
return
}
}
if (w.config.states.hover.filter.type !== 'none') {
filters.getDefaultFilter(path, i)
}
}
pathMouseDown(path, e) {
let w = this.w
const filters = new Filters(this.ctx)
const i = parseInt(path.node.getAttribute('index'), 10)
const j = parseInt(path.node.getAttribute('j'), 10)
let selected = 'false'
if (path.node.getAttribute('selected') === 'true') {
path.node.setAttribute('selected', 'false')
if (w.globals.selectedDataPoints[i].indexOf(j) > -1) {
let index = w.globals.selectedDataPoints[i].indexOf(j)
w.globals.selectedDataPoints[i].splice(index, 1)
}
} else {
if (
!w.config.states.active.allowMultipleDataPointsSelection &&
w.globals.selectedDataPoints.length > 0
) {
w.globals.selectedDataPoints = []
const elPaths = w.globals.dom.Paper.select(
'.apexcharts-series path'
).members
const elCircles = w.globals.dom.Paper.select(
'.apexcharts-series circle, .apexcharts-series rect'
).members
const deSelect = (els) => {
Array.prototype.forEach.call(els, (el) => {
el.node.setAttribute('selected', 'false')
filters.getDefaultFilter(el, i)
})
}
deSelect(elPaths)
deSelect(elCircles)
}
path.node.setAttribute('selected', 'true')
selected = 'true'
if (typeof w.globals.selectedDataPoints[i] === 'undefined') {
w.globals.selectedDataPoints[i] = []
}
w.globals.selectedDataPoints[i].push(j)
}
if (selected === 'true') {
let activeFilter = w.config.states.active.filter
if (activeFilter !== 'none') {
filters.applyFilter(path, i, activeFilter.type, activeFilter.value)
} else {
// Reapply the hover filter in case it was removed by `deselect`when there is no active filter and it is not a touch device
if (w.config.states.hover.filter !== 'none') {
if (!w.globals.isTouchDevice) {
var hoverFilter = w.config.states.hover.filter
filters.applyFilter(path, i, hoverFilter.type, hoverFilter.value)
}
}
}
} else {
// If the item was deselected, apply hover state filter if it is not a touch device
if (w.config.states.active.filter.type !== 'none') {
if (
w.config.states.hover.filter.type !== 'none' &&
!w.globals.isTouchDevice
) {
var hoverFilter = w.config.states.hover.filter
filters.applyFilter(path, i, hoverFilter.type, hoverFilter.value)
} else {
filters.getDefaultFilter(path, i)
}
}
}
if (typeof w.config.chart.events.dataPointSelection === 'function') {
w.config.chart.events.dataPointSelection(e, this.ctx, {
selectedDataPoints: w.globals.selectedDataPoints,
seriesIndex: i,
dataPointIndex: j,
w,
})
}
if (e) {
this.ctx.events.fireEvent('dataPointSelection', [
e,
this.ctx,
{
selectedDataPoints: w.globals.selectedDataPoints,
seriesIndex: i,
dataPointIndex: j,
w,
},
])
}
}
rotateAroundCenter(el) {
let coord = {}
if (el && typeof el.getBBox === 'function') {
coord = el.getBBox()
}
let x = coord.x + coord.width / 2
let y = coord.y + coord.height / 2
return {
x,
y,
}
}
static setAttrs(el, attrs) {
for (let key in attrs) {
if (attrs.hasOwnProperty(key)) {
el.setAttribute(key, attrs[key])
}
}
}
getTextRects(text, fontSize, fontFamily, transform, useBBox = true) {
let w = this.w
let virtualText = this.drawText({
x: -200,
y: -200,
text,
textAnchor: 'start',
fontSize,
fontFamily,
foreColor: '#fff',
opacity: 0,
})
if (transform) {
virtualText.attr('transform', transform)
}
w.globals.dom.Paper.add(virtualText)
let rect = virtualText.bbox()
if (!useBBox) {
rect = virtualText.node.getBoundingClientRect()
}
virtualText.remove()
return {
width: rect.width,
height: rect.height,
}
}
/**
* append ... to long text
* http://stackoverflow.com/questions/9241315/trimming-text-to-a-given-pixel-width-in-svg
* @memberof Graphics
**/
placeTextWithEllipsis(textObj, textString, width) {
if (typeof textObj.getComputedTextLength !== 'function') return
textObj.textContent = textString
if (textString.length > 0) {
// ellipsis is needed
if (textObj.getComputedTextLength() >= width / 1.1) {
for (let x = textString.length - 3; x > 0; x -= 3) {
if (textObj.getSubStringLength(0, x) <= width / 1.1) {
textObj.textContent = textString.substring(0, x) + '...'
return
}
}
textObj.textContent = '.' // can't place at all
}
}
}
}
export default Graphics