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import {
adopt,
extend,
nodeOrNew,
register,
wrapWithAttrCheck
} from '../utils/adopter.js'
import { attrs } from '../modules/core/defaults.js'
import { registerMethods } from '../utils/methods.js'
import SVGNumber from '../types/SVGNumber.js'
import Shape from './Shape.js'
import { globals } from '../utils/window.js'
import * as textable from '../modules/core/textable.js'
export default class Text extends Shape {
// Initialize node
constructor (node) {
super(nodeOrNew('text', node), node)
this.dom.leading = new SVGNumber(1.3) // store leading value for rebuilding
this._rebuild = true // enable automatic updating of dy values
this._build = false // disable build mode for adding multiple lines
// set default font
this.attr('font-family', attrs['font-family'])
}
// Move over x-axis
x (x) {
// act as getter
if (x == null) {
return this.attr('x')
}
return this.attr('x', x)
}
// Move over y-axis
y (y) {
var oy = this.attr('y')
var o = typeof oy === 'number' ? oy - this.bbox().y : 0
// act as getter
if (y == null) {
return typeof oy === 'number' ? oy - o : oy
}
return this.attr('y', typeof y === 'number' ? y + o : y)
}
// Move center over x-axis
cx (x) {
return x == null ? this.bbox().cx : this.x(x - this.bbox().width / 2)
}
// Move center over y-axis
cy (y) {
return y == null ? this.bbox().cy : this.y(y - this.bbox().height / 2)
}
// Set the text content
text (text) {
// act as getter
if (text === undefined) {
var children = this.node.childNodes
var firstLine = 0
text = ''
for (var i = 0, len = children.length; i < len; ++i) {
// skip textPaths - they are no lines
if (children[i].nodeName === 'textPath') {
if (i === 0) firstLine = 1
continue
}
// add newline if its not the first child and newLined is set to true
if (i !== firstLine && children[i].nodeType !== 3 && adopt(children[i]).dom.newLined === true) {
text += '\n'
}
// add content of this node
text += children[i].textContent
}
return text
}
// remove existing content
this.clear().build(true)
if (typeof text === 'function') {
// call block
text.call(this, this)
} else {
// store text and make sure text is not blank
text = text.split('\n')
// build new lines
for (var j = 0, jl = text.length; j < jl; j++) {
this.tspan(text[j]).newLine()
}
}
// disable build mode and rebuild lines
return this.build(false).rebuild()
}
// Set / get leading
leading (value) {
// act as getter
if (value == null) {
return this.dom.leading
}
// act as setter
this.dom.leading = new SVGNumber(value)
return this.rebuild()
}
// Rebuild appearance type
rebuild (rebuild) {
// store new rebuild flag if given
if (typeof rebuild === 'boolean') {
this._rebuild = rebuild
}
// define position of all lines
if (this._rebuild) {
var self = this
var blankLineOffset = 0
var leading = this.dom.leading
this.each(function () {
var fontSize = globals.window.getComputedStyle(this.node)
.getPropertyValue('font-size')
var dy = leading * new SVGNumber(fontSize)
if (this.dom.newLined) {
this.attr('x', self.attr('x'))
if (this.text() === '\n') {
blankLineOffset += dy
} else {
this.attr('dy', dy + blankLineOffset)
blankLineOffset = 0
}
}
})
this.fire('rebuild')
}
return this
}
// Enable / disable build mode
build (build) {
this._build = !!build
return this
}
// overwrite method from parent to set data properly
setData (o) {
this.dom = o
this.dom.leading = new SVGNumber(o.leading || 1.3)
return this
}
}
extend(Text, textable)
registerMethods({
Container: {
// Create text element
text: wrapWithAttrCheck(function (text) {
return this.put(new Text()).text(text)
}),
// Create plain text element
plain: wrapWithAttrCheck(function (text) {
return this.put(new Text()).plain(text)
})
}
})
register(Text)
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