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Versions: 14
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Contents
goog.provide('webfont.FontRuler');
/**
* An element that can be used to measure the metrics
* of a given font and string.
* @constructor
* @param {webfont.DomHelper} domHelper
* @param {string} fontTestString
*/
webfont.FontRuler = function (domHelper, fontTestString) {
this.domHelper_ = domHelper;
this.fontTestString_ = fontTestString;
this.el_ = this.domHelper_.createElement('span', {
"aria-hidden": "true"
}, this.fontTestString_);
};
goog.scope(function () {
var FontRuler = webfont.FontRuler;
/**
* @param {webfont.Font} font
*/
FontRuler.prototype.setFont = function(font) {
this.domHelper_.setStyle(this.el_, this.computeStyleString_(font));
};
/**
* Inserts the ruler into the DOM.
*/
FontRuler.prototype.insert = function() {
this.domHelper_.insertInto('body', this.el_);
};
/**
* @private
* @param {webfont.Font} font
* @return {string}
*/
FontRuler.prototype.computeStyleString_ = function(font) {
return "position:absolute;top:-999px;left:-999px;" +
"font-size:300px;width:auto;height:auto;line-height:normal;margin:0;" +
"padding:0;font-variant:normal;white-space:nowrap;font-family:" +
font.getCssName() + ";" + font.getCssVariation();
};
/**
* @return {number}
*/
FontRuler.prototype.getWidth = function() {
return this.el_.offsetWidth;
};
/**
* Removes the ruler element from the DOM.
*/
FontRuler.prototype.remove = function() {
this.domHelper_.removeElement(this.el_);
};
});
Version data entries
14 entries across 14 versions & 1 rubygems