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// ### This module accounts for the main svg document
//
SVG.Doc = function(element) {
/* ensure the presence of a html element */
this.parent = typeof element == 'string' ?
document.getElementById(element) :
element
/* If the target is an svg element, use that element as the main wrapper.
This allows svg.js to work with svg documents as well. */
this.constructor
.call(this, this.parent.nodeName == 'svg' ? this.parent : SVG.create('svg'))
/* set svg element attributes */
this
.attr({ xmlns: SVG.ns, version: '1.1', width: '100%', height: '100%' })
.attr('xmlns:xlink', SVG.xlink, SVG.xmlns)
/* create the <defs> node */
this._defs = new SVG.Defs
this._defs.parent = this
this.node.appendChild(this._defs.node)
/* turno of sub pixel offset by default */
this.doSubPixelOffsetFix = false
/* ensure correct rendering */
if (this.parent.nodeName != 'svg')
this.stage()
}
// Inherits from SVG.Container
SVG.Doc.prototype = new SVG.Container
//
SVG.extend(SVG.Doc, {
// Hack for safari preventing text to be rendered in one line.
// Basically it sets the position of the svg node to absolute
// when the dom is loaded, and resets it to relative a few milliseconds later.
// It also handles sub-pixel offset rendering properly.
stage: function() {
var check
, element = this
, wrapper = document.createElement('div')
/* set temporary wrapper to position relative */
wrapper.style.cssText = 'position:relative;height:100%;'
/* put element into wrapper */
element.parent.appendChild(wrapper)
wrapper.appendChild(element.node)
/* check for dom:ready */
check = function() {
if (document.readyState === 'complete') {
element.style('position:absolute;')
setTimeout(function() {
/* set position back to relative */
element.style('position:relative;overflow:hidden;')
/* remove temporary wrapper */
element.parent.removeChild(element.node.parentNode)
element.node.parentNode.removeChild(element.node)
element.parent.appendChild(element.node)
/* after wrapping is done, fix sub-pixel offset */
element.subPixelOffsetFix()
/* make sure sub-pixel offset is fixed every time the window is resized */
SVG.on(window, 'resize', function() {
element.subPixelOffsetFix()
})
}, 5)
} else {
setTimeout(check, 10)
}
}
check()
return this
}
// Creates and returns defs element
, defs: function() {
return this._defs
}
// Fix for possible sub-pixel offset. See:
// https://bugzilla.mozilla.org/show_bug.cgi?id=608812
, subPixelOffsetFix: function() {
if (this.doSubPixelOffsetFix) {
var pos = this.node.getScreenCTM()
if (pos)
this
.style('left', (-pos.e % 1) + 'px')
.style('top', (-pos.f % 1) + 'px')
}
return this
}
, fixSubPixelOffset: function() {
this.doSubPixelOffsetFix = true
return this
}
})
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