/*!
* Farbtastic: jQuery color picker plug-in v1.3u
* https://github.com/mattfarina/farbtastic
*
* Licensed under the GPL license:
* http://www.gnu.org/licenses/gpl.html
*/
/**
* Modified for WordPress: replaced deprecated jQuery methods.
* See https://core.trac.wordpress.org/ticket/57946.
*/
(function($) {
$.fn.farbtastic = function (options) {
$.farbtastic(this, options);
return this;
};
$.farbtastic = function (container, callback) {
var container = $(container).get(0);
return container.farbtastic || (container.farbtastic = new $._farbtastic(container, callback));
};
$._farbtastic = function (container, callback) {
// Store farbtastic object
var fb = this;
// Insert markup
$(container).html('<div class="farbtastic"><div class="color"></div><div class="wheel"></div><div class="overlay"></div><div class="h-marker marker"></div><div class="sl-marker marker"></div></div>');
var e = $('.farbtastic', container);
fb.wheel = $('.wheel', container).get(0);
// Dimensions
fb.radius = 84;
fb.square = 100;
fb.width = 194;
// Fix background PNGs in IE6
if (navigator.appVersion.match(/MSIE [0-6]\./)) {
$('*', e).each(function () {
if (this.currentStyle.backgroundImage != 'none') {
var image = this.currentStyle.backgroundImage;
image = this.currentStyle.backgroundImage.substring(5, image.length - 2);
$(this).css({
'backgroundImage': 'none',
'filter': "progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true, sizingMethod=crop, src='" + image + "')"
});
}
});
}
/**
* Link to the given element(s) or callback.
*/
fb.linkTo = function (callback) {
// Unbind previous nodes
if (typeof fb.callback == 'object') {
$(fb.callback).off('keyup', fb.updateValue);
}
// Reset color
fb.color = null;
// Bind callback or elements
if (typeof callback == 'function') {
fb.callback = callback;
}
else if (typeof callback == 'object' || typeof callback == 'string') {
fb.callback = $(callback);
fb.callback.on('keyup', fb.updateValue);
if (fb.callback.get(0).value) {
fb.setColor(fb.callback.get(0).value);
}
}
return this;
};
fb.updateValue = function (event) {
if (this.value && this.value != fb.color) {
fb.setColor(this.value);
}
};
/**
* Change color with HTML syntax #123456
*/
fb.setColor = function (color) {
var unpack = fb.unpack(color);
if (fb.color != color && unpack) {
fb.color = color;
fb.rgb = unpack;
fb.hsl = fb.RGBToHSL(fb.rgb);
fb.updateDisplay();
}
return this;
};
/**
* Change color with HSL triplet [0..1, 0..1, 0..1]
*/
fb.setHSL = function (hsl) {
fb.hsl = hsl;
fb.rgb = fb.HSLToRGB(hsl);
fb.color = fb.pack(fb.rgb);
fb.updateDisplay();
return this;
};
/////////////////////////////////////////////////////
/**
* Retrieve the coordinates of the given event relative to the center
* of the widget.
*/
fb.widgetCoords = function (event) {
var offset = $(fb.wheel).offset();
return { x: (event.pageX - offset.left) - fb.width / 2, y: (event.pageY - offset.top) - fb.width / 2 };
};
/**
* Mousedown handler
*/
fb.mousedown = function (event) {
// Capture mouse
if (!document.dragging) {
$(document).on('mousemove', fb.mousemove).on('mouseup', fb.mouseup);
document.dragging = true;
}
// Check which area is being dragged
var pos = fb.widgetCoords(event);
fb.circleDrag = Math.max(Math.abs(pos.x), Math.abs(pos.y)) * 2 > fb.square;
// Process
fb.mousemove(event);
return false;
};
/**
* Mousemove handler
*/
fb.mousemove = function (event) {
// Get coordinates relative to color picker center
var pos = fb.widgetCoords(event);
// Set new HSL parameters
if (fb.circleDrag) {
var hue = Math.atan2(pos.x, -pos.y) / 6.28;
if (hue < 0) hue += 1;
fb.setHSL([hue, fb.hsl[1], fb.hsl[2]]);
}
else {
var s