--- /dev/null
+(function (Raphael) {
+ Raphael.colorwheel = function (x, y, size, initcolor, element) {
+ return new ColorWheel(x, y, size, initcolor, element);
+ };
+ var pi = Math.PI,
+ doc = document,
+ win = window,
+ ColorWheel = function (x, y, size, initcolor, element) {
+ size = size || 200;
+ var w3 = 3 * size / 200,
+ w1 = size / 200,
+ fi = 1.6180339887,
+ segments = pi * size / 5,
+ size20 = size / 20,
+ size2 = size / 2,
+ padding = 2 * size / 200,
+ t = this;
+
+ var H = 1, S = 1, B = 1, s = size - (size20 * 4);
+ var r = element ? Raphael(element, size, size) : Raphael(x, y, size, size),
+ xy = s / 6 + size20 * 2 + padding,
+ wh = s * 2 / 3 - padding * 2;
+ w1 < 1 && (w1 = 1);
+ w3 < 1 && (w3 = 1);
+
+
+ // ring drawing
+ var a = pi / 2 - pi * 2 / segments * 1.3,
+ R = size2 - padding,
+ R2 = size2 - padding - size20 * 2,
+ path = ["M", size2, padding, "A", R, R, 0, 0, 1, R * Math.cos(a) + R + padding, R - R * Math.sin(a) + padding, "L", R2 * Math.cos(a) + R + padding, R - R2 * Math.sin(a) + padding, "A", R2, R2, 0, 0, 0, size2, padding + size20 * 2, "z"].join();
+ for (var i = 0; i < segments; i++) {
+ r.path(path).attr({
+ stroke: "none",
+ fill: "hsb(" + i * (255 / segments) / 255 + ", 1, 0.78)",
+ transform: "r" + [(360 / segments) * i, size2, size2]
+ });
+ }
+ r.path(["M", size2, padding, "A", R, R, 0, 1, 1, size2 - 1, padding, "l1,0", "M", size2, padding + size20 * 2, "A", R2, R2, 0, 1, 1, size2 - 1, padding + size20 * 2, "l1,0"]).attr({
+ "stroke-width": w3,
+ stroke: "#fff"
+ });
+ t.cursorhsb = r.set();
+ var h = size20 * 2 + 2;
+ t.cursorhsb.push(r.rect(size2 - h / fi / 2, padding - 1, h / fi, h, 3 * size / 200).attr({
+ stroke: "#000",
+ opacity: .5,
+ "stroke-width": w3
+ }));
+ t.cursorhsb.push(t.cursorhsb[0].clone().attr({
+ stroke: "#fff",
+ opacity: 1,
+ "stroke-width": w1
+ }));
+ t.ring = r.path(["M", size2, padding, "A", R, R, 0, 1, 1, size2 - 1, padding, "l1,0M", size2, padding + size20 * 2, "A", R2, R2, 0, 1, 1, size2 - 1, padding + size20 * 2, "l1,0"]).attr({
+ fill: "#000",
+ opacity: 0,
+ stroke: "none"
+ });
+
+ // rect drawing
+ t.main = r.rect(xy, xy, wh, wh).attr({
+ stroke: "none",
+ fill: "#f00",
+ opacity: 1
+ });
+ t.main.clone().attr({
+ stroke: "none",
+ fill: "0-#fff-#fff",
+ opacity: 0
+ });
+ t.square = r.rect(xy - 1, xy - 1, wh + 2, wh + 2).attr({
+ r: 2,
+ stroke: "#fff",
+ "stroke-width": w3,
+ fill: "90-#000-#000",
+ opacity: 0,
+ cursor: "crosshair"
+ });
+ t.cursor = r.set();
+ t.cursor.push(r.circle(size2, size2, size20 / 2).attr({
+ stroke: "#000",
+ opacity: .5,
+ "stroke-width": w3
+ }));
+ t.cursor.push(t.cursor[0].clone().attr({
+ stroke: "#fff",
+ opacity: 1,
+ "stroke-width": w1
+ }));
+ t.H = t.S = t.B = 1;
+ t.raphael = r;
+ t.size2 = size2;
+ t.wh = wh;
+ t.x = x;
+ t.xy = xy;
+ t.y = y;
+
+ // events
+ t.ring.drag(function (dx, dy, x, y) {
+ t.docOnMove(dx, dy, x, y);
+ }, function (x, y) {
+ t.hsbOnTheMove = true;
+ t.setH(x - t.x - t.size2, y - t.y - t.size2);
+ }, function () {
+ t.hsbOnTheMove = false;
+ });
+ t.square.drag(function (dx, dy, x, y) {
+ t.docOnMove(dx, dy, x, y);
+ }, function (x, y) {
+ t.clrOnTheMove = true;
+ t.setSB(x - t.x, y - t.y);
+ }, function () {
+ t.clrOnTheMove = false;
+ });
+
+ t.color(initcolor || "#f00");
+ this.onchanged && this.onchanged(this.color());
+ },
+ proto = ColorWheel.prototype;
+ proto.setH = function (x, y) {
+ var d = Raphael.angle(x, y, 0, 0),
+ rd = Raphael.rad(d);
+ this.cursorhsb.attr({transform: "r" + [d + 90, this.size2, this.size2]});
+ this.H = (d + 90) / 360;
+ this.main.attr({fill: "hsb(" + this.H + ",1,1)"});
+ this.onchange && this.onchange(this.color());
+ };
+ proto.setSB = function (x, y) {
+ var me = this;
+ x < me.size2 - me.wh / 2 && (x = me.size2 - me.wh / 2);
+ x > me.size2 + me.wh / 2 && (x = me.size2 + me.wh / 2);
+ y < me.size2 - me.wh / 2 && (y = me.size2 - me.wh / 2);
+ y > me.size2 + me.wh / 2 && (y = me.size2 + me.wh / 2);
+ me.cursor.attr({cx: x, cy: y});
+ me.B = 1 - (y - me.xy) / me.wh;
+ me.S = (x - me.xy) / me.wh;
+ me.onchange && me.onchange(me.color());
+ };
+ proto.docOnMove = function (dx, dy, x, y) {
+ if (this.hsbOnTheMove) {
+ this.setH(x - this.x - this.size2, y - this.y - this.size2);
+ }
+ if (this.clrOnTheMove) {
+ this.setSB(x - this.x, y - this.y);
+ }
+ };
+ proto.remove = function () {
+ this.raphael.remove();
+ this.color = function () {
+ return false;
+ };
+ };
+ proto.color = function (color) {
+ if (color) {
+ color = Raphael.color(color);
+ var d = color.h * 360;
+ this.H = color.h;
+ this.S = color.s;
+ this.B = color.v;
+ this.cursorhsb.attr({transform: "r" + [d, this.size2, this.size2]});
+ this.main.attr({fill: "hsb(" + this.H + ",1,1)"});
+ var x = this.S * this.wh + this.xy,
+ y = (1 - this.B) * this.wh + this.xy;
+ this.cursor.attr({cx: x, cy: y});
+ return this;
+ } else {
+ return Raphael.hsb2rgb(this.H, this.S, this.B).hex;
+ }
+ };
+})(window.Raphael);
HCoop / clinton / scratch.git / blobdiff