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SVG.Text = SVG.invent({
// Initialize node
create: function() {
this.constructor.call(this, SVG.create('text'))
this.dom.leading = new SVG.Number(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', SVG.defaults.attrs['font-family'])
}
// Inherit from
, inherit: SVG.Parent
// Add class methods
, extend: {
// Move over x-axis
x: function(x) {
// act as getter
if (x == null)
return this.attr('x')
return this.attr('x', x)
}
// Move over y-axis
, y: function(y) {
var oy = this.attr('y')
, 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: function(x) {
return x == null ? this.bbox().cx : this.x(x - this.bbox().width / 2)
}
// Move center over y-axis
, cy: function(y) {
return y == null ? this.bbox().cy : this.y(y - this.bbox().height / 2)
}
// Set the text content
, text: function(text) {
// act as getter
if (text === undefined){
var text = ''
, children = this.node.childNodes
, firstLine = 0
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 && SVG.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 i = 0, il = text.length; i < il; i++)
this.tspan(text[i]).newLine()
}
// disable build mode and rebuild lines
return this.build(false).rebuild()
}
// Set font size
, size: function(size) {
return this.attr('font-size', size).rebuild()
}
// Set / get leading
, leading: function(value) {
// act as getter
if (value == null)
return this.dom.leading
// act as setter
this.dom.leading = new SVG.Number(value)
return this.rebuild()
}
// Rebuild appearance type
, rebuild: function(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
, blankLineOffset = 0
, dy = this.dom.leading * new SVG.Number(this.attr('font-size'))
this.each(function() {
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: function(build) {
this._build = !!build
return this
}
// overwrite method from parent to set data properly
, setData: function(o){
this.dom = o
this.dom.leading = new SVG.Number(o.leading || 1.3)
return this
}
}
// Add parent method
, construct: {
// Create text element
text: function(text) {
return this.put(new SVG.Text).text(text)
}
// Create plain text element
, plain: function(text) {
return this.put(new SVG.Text).plain(text)
}
}
})
SVG.Tspan = SVG.invent({
// Initialize node
create: 'tspan'
// Inherit from
, inherit: SVG.Parent
// Add class methods
, extend: {
// Set text content
text: function(text) {
if(text == null) return this.node.textContent + (this.dom.newLined ? '\n' : '')
typeof text === 'function' ? text.call(this, this) : this.plain(text)
return this
}
// Shortcut dx
, dx: function(dx) {
return this.attr('dx', dx)
}
// Shortcut dy
, dy: function(dy) {
return this.attr('dy', dy)
}
// Create new line
, newLine: function() {
// fetch text parent
var t = this.parent(SVG.Text)
// mark new line
this.dom.newLined = true
// apply new hy¡n
return this.dy(t.dom.leading * t.attr('font-size')).attr('x', t.x())
}
}
})
SVG.extend([SVG.Text, SVG.Tspan], {
// Create plain text node
plain: function(text) {
// clear if build mode is disabled
if (this._build === false)
this.clear()
// create text node
this.node.appendChild(document.createTextNode(text))
return this
}
// Create a tspan
, tspan: function(text) {
var tspan = new SVG.Tspan
// clear if build mode is disabled
if (!this._build)
this.clear()
// add new tspan
this.node.appendChild(tspan.node)
return tspan.text(text)
}
// FIXME: Does this also work for textpath?
// Get length of text element
, length: function() {
return this.node.getComputedTextLength()
}
})
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