src/pyams_skin/resources/js/ext/flot/jquery.colorhelpers.js
changeset 557 bca7a7e058a3
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/pyams_skin/resources/js/ext/flot/jquery.colorhelpers.js	Thu Feb 13 11:43:31 2020 +0100
@@ -0,0 +1,199 @@
+/* Plugin for jQuery for working with colors.
+ *
+ * Version 1.1.
+ *
+ * Inspiration from jQuery color animation plugin by John Resig.
+ *
+ * Released under the MIT license by Ole Laursen, October 2009.
+ *
+ * Examples:
+ *
+ *   $.color.parse("#fff").scale('rgb', 0.25).add('a', -0.5).toString()
+ *   var c = $.color.extract($("#mydiv"), 'background-color');
+ *   console.log(c.r, c.g, c.b, c.a);
+ *   $.color.make(100, 50, 25, 0.4).toString() // returns "rgba(100,50,25,0.4)"
+ *
+ * Note that .scale() and .add() return the same modified object
+ * instead of making a new one.
+ *
+ * V. 1.1: Fix error handling so e.g. parsing an empty string does
+ * produce a color rather than just crashing.
+ */
+
+(function($) {
+    $.color = {};
+
+    // construct color object with some convenient chainable helpers
+    $.color.make = function (r, g, b, a) {
+        var o = {};
+        o.r = r || 0;
+        o.g = g || 0;
+        o.b = b || 0;
+        o.a = a != null ? a : 1;
+
+        o.add = function (c, d) {
+            for (var i = 0; i < c.length; ++i) {
+                o[c.charAt(i)] += d;
+            }
+
+            return o.normalize();
+        };
+
+        o.scale = function (c, f) {
+            for (var i = 0; i < c.length; ++i) {
+                o[c.charAt(i)] *= f;
+            }
+
+            return o.normalize();
+        };
+
+        o.toString = function () {
+            if (o.a >= 1.0) {
+                return "rgb(" + [o.r, o.g, o.b].join(",") + ")";
+            } else {
+                return "rgba(" + [o.r, o.g, o.b, o.a].join(",") + ")";
+            }
+        };
+
+        o.normalize = function () {
+            function clamp(min, value, max) {
+                return value < min ? min : (value > max ? max : value);
+            }
+
+            o.r = clamp(0, parseInt(o.r), 255);
+            o.g = clamp(0, parseInt(o.g), 255);
+            o.b = clamp(0, parseInt(o.b), 255);
+            o.a = clamp(0, o.a, 1);
+            return o;
+        };
+
+        o.clone = function () {
+            return $.color.make(o.r, o.b, o.g, o.a);
+        };
+
+        return o.normalize();
+    }
+
+    // extract CSS color property from element, going up in the DOM
+    // if it's "transparent"
+    $.color.extract = function (elem, css) {
+        var c;
+
+        do {
+            c = elem.css(css).toLowerCase();
+            // keep going until we find an element that has color, or
+            // we hit the body or root (have no parent)
+            if (c !== '' && c !== 'transparent') {
+                break;
+            }
+
+            elem = elem.parent();
+        } while (elem.length && !$.nodeName(elem.get(0), "body"));
+
+        // catch Safari's way of signalling transparent
+        if (c === "rgba(0, 0, 0, 0)") {
+            c = "transparent";
+        }
+
+        return $.color.parse(c);
+    }
+
+    // parse CSS color string (like "rgb(10, 32, 43)" or "#fff"),
+    // returns color object, if parsing failed, you get black (0, 0,
+    // 0) out
+    $.color.parse = function (str) {
+        var res, m = $.color.make;
+
+        // Look for rgb(num,num,num)
+        res = /rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(str);
+        if (res) {
+            return m(parseInt(res[1], 10), parseInt(res[2], 10), parseInt(res[3], 10));
+        }
+
+        // Look for rgba(num,num,num,num)
+        res = /rgba\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(str)
+        if (res) {
+            return m(parseInt(res[1], 10), parseInt(res[2], 10), parseInt(res[3], 10), parseFloat(res[4]));
+        }
+
+        // Look for rgb(num%,num%,num%)
+        res = /rgb\(\s*([0-9]+(?:\.[0-9]+)?)%\s*,\s*([0-9]+(?:\.[0-9]+)?)%\s*,\s*([0-9]+(?:\.[0-9]+)?)%\s*\)/.exec(str);
+        if (res) {
+            return m(parseFloat(res[1]) * 2.55, parseFloat(res[2]) * 2.55, parseFloat(res[3]) * 2.55);
+        }
+
+        // Look for rgba(num%,num%,num%,num)
+        res = /rgba\(\s*([0-9]+(?:\.[0-9]+)?)%\s*,\s*([0-9]+(?:\.[0-9]+)?)%\s*,\s*([0-9]+(?:\.[0-9]+)?)%\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(str);
+        if (res) {
+            return m(parseFloat(res[1]) * 2.55, parseFloat(res[2]) * 2.55, parseFloat(res[3]) * 2.55, parseFloat(res[4]));
+        }
+
+        // Look for #a0b1c2
+        res = /#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(str);
+        if (res) {
+            return m(parseInt(res[1], 16), parseInt(res[2], 16), parseInt(res[3], 16));
+        }
+
+        // Look for #fff
+        res = /#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(str);
+        if (res) {
+            return m(parseInt(res[1] + res[1], 16), parseInt(res[2] + res[2], 16), parseInt(res[3] + res[3], 16));
+        }
+
+        // Otherwise, we're most likely dealing with a named color
+        var name = $.trim(str).toLowerCase();
+        if (name === "transparent") {
+            return m(255, 255, 255, 0);
+        } else {
+            // default to black
+            res = lookupColors[name] || [0, 0, 0];
+            return m(res[0], res[1], res[2]);
+        }
+    }
+
+    var lookupColors = {
+        aqua: [0, 255, 255],
+        azure: [240, 255, 255],
+        beige: [245, 245, 220],
+        black: [0, 0, 0],
+        blue: [0, 0, 255],
+        brown: [165, 42, 42],
+        cyan: [0, 255, 255],
+        darkblue: [0, 0, 139],
+        darkcyan: [0, 139, 139],
+        darkgrey: [169, 169, 169],
+        darkgreen: [0, 100, 0],
+        darkkhaki: [189, 183, 107],
+        darkmagenta: [139, 0, 139],
+        darkolivegreen: [85, 107, 47],
+        darkorange: [255, 140, 0],
+        darkorchid: [153, 50, 204],
+        darkred: [139, 0, 0],
+        darksalmon: [233, 150, 122],
+        darkviolet: [148, 0, 211],
+        fuchsia: [255, 0, 255],
+        gold: [255, 215, 0],
+        green: [0, 128, 0],
+        indigo: [75, 0, 130],
+        khaki: [240, 230, 140],
+        lightblue: [173, 216, 230],
+        lightcyan: [224, 255, 255],
+        lightgreen: [144, 238, 144],
+        lightgrey: [211, 211, 211],
+        lightpink: [255, 182, 193],
+        lightyellow: [255, 255, 224],
+        lime: [0, 255, 0],
+        magenta: [255, 0, 255],
+        maroon: [128, 0, 0],
+        navy: [0, 0, 128],
+        olive: [128, 128, 0],
+        orange: [255, 165, 0],
+        pink: [255, 192, 203],
+        purple: [128, 0, 128],
+        violet: [128, 0, 128],
+        red: [255, 0, 0],
+        silver: [192, 192, 192],
+        white: [255, 255, 255],
+        yellow: [255, 255, 0]
+    };
+})(jQuery);