https://p31aperitivogreen.com/wp-admin/js/farbtastic.js?ver=7.1.2

1/*!
2 * Farbtastic: jQuery color picker plug-in v1.3u
3 * https://github.com/mattfarina/farbtastic
4 *
5 * Licensed under the GPL license:
6 *   http://www.gnu.org/licenses/gpl.html
7 */
8/**
9 * Modified for WordPress: replaced deprecated jQuery methods.
10 * See https://core.trac.wordpress.org/ticket/57946.
11 */
12
13(function($) {
14
15$.fn.farbtastic = function (options) {
16  $.farbtastic(this, options);
17  return this;
18};
19
20$.farbtastic = function (container, callback) {
21  var container = $(container).get(0);
22  return container.farbtastic || (container.farbtastic = new $._farbtastic(container, callback));
23};
24
25$._farbtastic = function (container, callback) {
26  // Store farbtastic object
27  var fb = this;
28
29  // Insert markup
30  $(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>');
31  var e = $('.farbtastic', container);
32  fb.wheel = $('.wheel', container).get(0);
33  // Dimensions
34  fb.radius = 84;
35  fb.square = 100;
36  fb.width = 194;
37
38  // Fix background PNGs in IE6
39  if (navigator.appVersion.match(/MSIE [0-6]\./)) {
40    $('*', e).each(function () {
41      if (this.currentStyle.backgroundImage != 'none') {
42        var image = this.currentStyle.backgroundImage;
43        image = this.currentStyle.backgroundImage.substring(5, image.length - 2);
44        $(this).css({
45          'backgroundImage': 'none',
46          'filter': "progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true, sizingMethod=crop, src='" + image + "')"
47        });
48      }
49    });
50  }
51
52  /**
53   * Link to the given element(s) or callback.
54   */
55  fb.linkTo = function (callback) {
56    // Unbind previous nodes
57    if (typeof fb.callback == 'object') {
58      $(fb.callback).off('keyup', fb.updateValue);
59    }
60
61    // Reset color
62    fb.color = null;
63
64    // Bind callback or elements
65    if (typeof callback == 'function') {
66      fb.callback = callback;
67    }
68    else if (typeof callback == 'object' || typeof callback == 'string') {
69      fb.callback = $(callback);
70      fb.callback.on('keyup', fb.updateValue);
71      if (fb.callback.get(0).value) {
72        fb.setColor(fb.callback.get(0).value);
73      }
74    }
75    return this;
76  };
77  fb.updateValue = function (event) {
78    if (this.value && this.value != fb.color) {
79      fb.setColor(this.value);
80    }
81  };
82
83  /**
84   * Change color with HTML syntax #123456
85   */
86  fb.setColor = function (color) {
87    var unpack = fb.unpack(color);
88    if (fb.color != color && unpack) {
89      fb.color = color;
90      fb.rgb = unpack;
91      fb.hsl = fb.RGBToHSL(fb.rgb);
92      fb.updateDisplay();
93    }
94    return this;
95  };
96
97  /**
98   * Change color with HSL triplet [0..1, 0..1, 0..1]
99   */
100  fb.setHSL = function (hsl) {
101    fb.hsl = hsl;
102    fb.rgb = fb.HSLToRGB(hsl);
103    fb.color = fb.pack(fb.rgb);
104    fb.updateDisplay();
105    return this;
106  };
107
108  /////////////////////////////////////////////////////
109
110  /**
111   * Retrieve the coordinates of the given event relative to the center
112   * of the widget.
113   */
114  fb.widgetCoords = function (event) {
115    var offset = $(fb.wheel).offset();
116    return { x: (event.pageX - offset.left) - fb.width / 2, y: (event.pageY - offset.top) - fb.width / 2 };
117  };
118
119  /**
120   * Mousedown handler
121   */
122  fb.mousedown = function (event) {
123    // Capture mouse
124    if (!document.dragging) {
125      $(document).on('mousemove', fb.mousemove).on('mouseup', fb.mouseup);
126      document.dragging = true;
127    }
128
129    // Check which area is being dragged
130    var pos = fb.widgetCoords(event);
131    fb.circleDrag = Math.max(Math.abs(pos.x), Math.abs(pos.y)) * 2 > fb.square;
132
133    // Process
134    fb.mousemove(event);
135    return false;
136  };
137
138  /**
139   * Mousemove handler
140   */
141  fb.mousemove = function (event) {
142    // Get coordinates relative to color picker center
143    var pos = fb.widgetCoords(event);
144
145    // Set new HSL parameters
146    if (fb.circleDrag) {
147      var hue = Math.atan2(pos.x, -pos.y) / 6.28;
148      if (hue < 0) hue += 1;
149      fb.setHSL([hue, fb.hsl[1], fb.hsl[2]]);
150    }
151    else {
152      var sat = Math.max(0, Math.min(1, -(pos.x / fb.square) + .5));
153      var lum = Math.max(0, Math.min(1, -(pos.y / fb.square) + .5));
154      fb.setHSL([fb.hsl[0], sat, lum]);
155    }
156    return false;
157  };
158
159  /**
160   * Mouseup handler
161   */
162  fb.mouseup = function () {
163    // Uncapture mouse
164    $(document).off('mousemove', fb.mousemove);
165    $(document).off('mouseup', fb.mouseup);
166    document.dragging = false;
167  };
168
169  /**
170   * Update the markers and styles
171   */
172  fb.updateDisplay = function () {
173    // Markers
174    var angle = fb.hsl[0] * 6.28;
175    $('.h-marker', e).css({
176      left: Math.round(Math.sin(angle) * fb.radius + fb.width / 2) + 'px',
177      top: Math.round(-Math.cos(angle) * fb.radius + fb.width / 2) + 'px'
178    });
179
180    $('.sl-marker', e).css({
181      left: Math.round(fb.square * (.5 - fb.hsl[1]) + fb.width / 2) + 'px',
182      top: Math.round(fb.square * (.5 - fb.hsl[2]) + fb.width / 2) + 'px'
183    });
184
185    // Saturation/Luminance gradient
186    $('.color', e).css('backgroundColor', fb.pack(fb.HSLToRGB([fb.hsl[0], 1, 0.5])));
187
188    // Linked elements or callback
189    if (typeof fb.callback == 'object') {
190      // Set background/foreground color
191      $(fb.callback).css({
192        backgroundColor: fb.color,
193        color: fb.hsl[2] > 0.5 ? '#000' : '#fff'
194      });
195
196      // Change linked value
197      $(fb.callback).each(function() {
198        if (this.value && this.value != fb.color) {
199          this.value = fb.color;
200        }
201      });
202    }
203    else if (typeof fb.callback == 'function') {
204      fb.callback.call(fb, fb.color);
205    }
206  };
207
208  /* Various color utility functions */
209  fb.pack = function (rgb) {
210    var r = Math.round(rgb[0] * 255);
211    var g = Math.round(rgb[1] * 255);
212    var b = Math.round(rgb[2] * 255);
213    return '#' + (r < 16 ? '0' : '') + r.toString(16) +
214           (g < 16 ? '0' : '') + g.toString(16) +
215           (b < 16 ? '0' : '') + b.toString(16);
216  };
217
218  fb.unpack = function (color) {
219    if (color.length == 7) {
220      return [parseInt('0x' + color.substring(1, 3)) / 255,
221        parseInt('0x' + color.substring(3, 5)) / 255,
222        parseInt('0x' + color.substring(5, 7)) / 255];
223    }
224    else if (color.length == 4) {
225      return [parseInt('0x' + color.substring(1, 2)) / 15,
226        parseInt('0x' + color.substring(2, 3)) / 15,
227        parseInt('0x' + color.substring(3, 4)) / 15];
228    }
229  };
230
231  fb.HSLToRGB = function (hsl) {
232    var m1, m2, r, g, b;
233    var h = hsl[0], s = hsl[1], l = hsl[2];
234    m2 = (l <= 0.5) ? l * (s + 1) : l + s - l*s;
235    m1 = l * 2 - m2;
236    return [this.hueToRGB(m1, m2, h+0.33333),
237        this.hueToRGB(m1, m2, h),
238        this.hueToRGB(m1, m2, h-0.33333)];
239  };
240
241  fb.hueToRGB = function (m1, m2, h) {
242    h = (h < 0) ? h + 1 : ((h > 1) ? h - 1 : h);
243    if (h * 6 < 1) return m1 + (m2 - m1) * h * 6;
244    if (h * 2 < 1) return m2;
245    if (h * 3 < 2) return m1 + (m2 - m1) * (0.66666 - h) * 6;
246    return m1;
247  };
248
249  fb.RGBToHSL = function (rgb) {
250    var min, max, delta, h, s, l;
251    var r = rgb[0], g = rgb[1], b = rgb[2];
252    min = Math.min(r, Math.min(g, b));
253    max = Math.max(r, Math.max(g, b));
254    delta = max - min;
255    l = (min + max) / 2;
256    s = 0;
257    if (l > 0 && l < 1) {
258      s = delta / (l < 0.5 ? (2 * l) : (2 - 2 * l));
259    }
260    h = 0;
261    if (delta > 0) {
262      if (max == r && max != g) h += (g - b) / delta;
263      if (max == g && max != b) h += (2 + (b - r) / delta);
264      if (max == b && max != r) h += (4 + (r - g) / delta);
265      h /= 6;
266    }
267    return [h, s, l];
268  };
269
270  // Install mousedown handler (the others are set on the document on-demand)
271  $('*', e).on('mousedown', fb.mousedown);
272
273    // Init color
274  fb.setColor('#000000');
275
276  // Set linked elements/callback
277  if (callback) {
278    fb.linkTo(callback);
279  }
280};
281
282})(jQuery);