{I" class:ETI"ProcessedAsset;FI"logical_path;TI"spina/jquery.farbtastic.js;FI" pathname;TI"„/Users/bram/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/spina-template-0.2.4/vendor/assets/javascripts/spina/jquery.farbtastic.js;FI"content_type;TI"application/javascript;TI" mtime;Tl+Ü¥UI"length;TiÊ&I"digest;TI"%5d24e7b1d48885c679e07d0343cf782c;FI"source;TI"Ê&/** * Farbtastic Color Picker 1.2 * Â© 2008 Steven Wittens * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ jQuery.fn.farbtastic = function (callback) { $.farbtastic(this, callback); return this; }; jQuery.farbtastic = function (container, callback) { var container = $(container).get(0); return container.farbtastic || (container.farbtastic = new jQuery._farbtastic(container, callback)); } jQuery._farbtastic = function (container, callback) { // Store farbtastic object var fb = this; // Insert markup $(container).html('

'); 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).unbind('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.bind('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 x, y; var el = event.target || event.srcElement; var reference = fb.wheel; if (typeof event.offsetX != 'undefined') { // Use offset coordinates and find common offsetParent var pos = { x: event.offsetX, y: event.offsetY }; // Send the coordinates upwards through the offsetParent chain. var e = el; while (e) { e.mouseX = pos.x; e.mouseY = pos.y; pos.x += e.offsetLeft; pos.y += e.offsetTop; e = e.offsetParent; } // Look for the coordinates starting from the wheel widget. var e = reference; var offset = { x: 0, y: 0 } while (e) { if (typeof e.mouseX != 'undefined') { x = e.mouseX - offset.x; y = e.mouseY - offset.y; break; } offset.x += e.offsetLeft; offset.y += e.offsetTop; e = e.offsetParent; } // Reset stored coordinates e = el; while (e) { e.mouseX = undefined; e.mouseY = undefined; e = e.offsetParent; } } else { // Use absolute coordinates var pos = fb.absolutePosition(reference); x = (event.pageX || 0*(event.clientX + $('html').get(0).scrollLeft)) - pos.x; y = (event.pageY || 0*(event.clientY + $('html').get(0).scrollTop)) - pos.y; } // Subtract distance to middle return { x: x - fb.width / 2, y: y - fb.width / 2 }; } /** * Mousedown handler */ fb.mousedown = function (event) { // Capture mouse if (!document.dragging) { $(document).bind('mousemove', fb.mousemove).bind('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 sat = Math.max(0, Math.min(1, -(pos.x / fb.square) + .5)); var lum = Math.max(0, Math.min(1, -(pos.y / fb.square) + .5)); fb.setHSL([fb.hsl[0], sat, lum]); } return false; } /** * Mouseup handler */ fb.mouseup = function () { // Uncapture mouse $(document).unbind('mousemove', fb.mousemove); $(document).unbind('mouseup', fb.mouseup); document.dragging = false; } /** * Update the markers and styles */ fb.updateDisplay = function () { // Markers var angle = fb.hsl[0] * 6.28; $('.h-marker', e).css({ left: Math.round(Math.sin(angle) * fb.radius + fb.width / 2) + 'px', top: Math.round(-Math.cos(angle) * fb.radius + fb.width / 2) + 'px' }); $('.sl-marker', e).css({ left: Math.round(fb.square * (.5 - fb.hsl[1]) + fb.width / 2) + 'px', top: Math.round(fb.square * (.5 - fb.hsl[2]) + fb.width / 2) + 'px' }); // Saturation/Luminance gradient $('.color', e).css('backgroundColor', fb.pack(fb.HSLToRGB([fb.hsl[0], 1, 0.5]))); // Linked elements or callback if (typeof fb.callback == 'object') { // Set background/foreground color $(fb.callback).css({ backgroundColor: fb.color, color: fb.hsl[2] > 0.5 ? '#000' : '#fff' }); // Change linked value $(fb.callback).each(function() { if (this.value && this.value != fb.color) { this.value = fb.color; } }); } else if (typeof fb.callback == 'function') { fb.callback.call(fb, fb.color); } } /** * Get absolute position of element */ fb.absolutePosition = function (el) { var r = { x: el.offsetLeft, y: el.offsetTop }; // Resolve relative to offsetParent if (el.offsetParent) { var tmp = fb.absolutePosition(el.offsetParent); r.x += tmp.x; r.y += tmp.y; } return r; }; /* Various color utility functions */ fb.pack = function (rgb) { var r = Math.round(rgb[0] * 255); var g = Math.round(rgb[1] * 255); var b = Math.round(rgb[2] * 255); return '#' + (r < 16 ? '0' : '') + r.toString(16) + (g < 16 ? '0' : '') + g.toString(16) + (b < 16 ? '0' : '') + b.toString(16); } fb.unpack = function (color) { if (color.length == 7) { return [parseInt('0x' + color.substring(1, 3)) / 255, parseInt('0x' + color.substring(3, 5)) / 255, parseInt('0x' + color.substring(5, 7)) / 255]; } else if (color.length == 4) { return [parseInt('0x' + color.substring(1, 2)) / 15, parseInt('0x' + color.substring(2, 3)) / 15, parseInt('0x' + color.substring(3, 4)) / 15]; } } fb.HSLToRGB = function (hsl) { var m1, m2, r, g, b; var h = hsl[0], s = hsl[1], l = hsl[2]; m2 = (l <= 0.5) ? l * (s + 1) : l + s - l*s; m1 = l * 2 - m2; return [this.hueToRGB(m1, m2, h+0.33333), this.hueToRGB(m1, m2, h), this.hueToRGB(m1, m2, h-0.33333)]; } fb.hueToRGB = function (m1, m2, h) { h = (h < 0) ? h + 1 : ((h > 1) ? h - 1 : h); if (h * 6 < 1) return m1 + (m2 - m1) * h * 6; if (h * 2 < 1) return m2; if (h * 3 < 2) return m1 + (m2 - m1) * (0.66666 - h) * 6; return m1; } fb.RGBToHSL = function (rgb) { var min, max, delta, h, s, l; var r = rgb[0], g = rgb[1], b = rgb[2]; min = Math.min(r, Math.min(g, b)); max = Math.max(r, Math.max(g, b)); delta = max - min; l = (min + max) / 2; s = 0; if (l > 0 && l < 1) { s = delta / (l < 0.5 ? 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