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ColorPicker.js
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ColorPicker.js
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if(!dojo._hasResource["dojox.widget.ColorPicker"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dojox.widget.ColorPicker"] = true;
dojo.provide("dojox.widget.ColorPicker");
dojo.experimental("dojox.widget.ColorPicker"); // level: prototype
dojo.require("dijit.form._FormWidget");
dojo.require("dojo.dnd.move");
dojo.require("dojo.fx");
dojo.declare("dojox.widget.ColorPicker",
dijit.form._FormWidget,
{
// summary: a HSV color picker - like PhotoShop
//
// description:
// provides an interactive HSV ColorPicker similar to
// PhotoShop's color selction tool. Will eventually
// mixin FormWidget and be used as a suplement or a
// 'more interactive' replacement for ColorPalette
//
// example:
//
// code:
// var picker = new dojox.widget.ColorPicker({
// // a couple of example toggles:
// animatePoint:false,
// showHsv: false,
// webSafe: false,
// showRgb: false
// });
//
// markup:
// <div dojoType="dojox.widget.ColorPicker"></div>
//
// showRgb: Boolean
// show/update RGB input nodes
showRgb: true,
// showHsv: Boolean
// show/update HSV input nodes
showHsv: true,
// showHex: Boolean
// show/update Hex value field
showHex: true,
// webSafe: Boolean
// deprecated? or just use a toggle to show/hide that node, too?
webSafe: true,
// animatePoint: Boolean
// toggle to use slideTo (true) or just place the cursor (false) on click
animatePoint: true,
// slideDuration: Integer
// time in ms picker node will slide to next location (non-dragging) when animatePoint=true
slideDuration: 250,
_underlay: dojo.moduleUrl("dojox.widget","ColorPicker/images/underlay.png"),
templateString:"<div class=\"dojoxColorPicker\">\n\t<div class=\"dojoxColorPickerBox\">\n\t\t<div dojoAttachPoint=\"cursorNode\" class=\"dojoxColorPickerPoint\"></div>\n\t\t<img dojoAttachPoint=\"colorUnderlay\" dojoAttachEvent=\"onclick: _setPoint\" class=\"dojoxColorPickerUnderlay\" src=\"${_underlay}\">\n\t</div>\n\t<div class=\"dojoxHuePicker\">\n\t\t<div dojoAttachPoint=\"hueCursorNode\" class=\"dojoxHuePickerPoint\"></div>\n\t\t<div dojoAttachPoint=\"hueNode\" class=\"dojoxHuePickerUnderlay\" dojoAttachEvent=\"onclick: _setHuePoint\"></div>\n\t</div>\n\t<div dojoAttachPoint=\"previewNode\" class=\"dojoxColorPickerPreview\"></div>\n\t<div dojoAttachPoint=\"safePreviewNode\" class=\"dojoxColorPickerWebSafePreview\"></div>\n\t<div class=\"dojoxColorPickerOptional\">\n\t\t<div class=\"dijitInline dojoxColorPickerRgb\" dojoAttachPoint=\"rgbNode\">\n\t\t\t<table>\n\t\t\t<tr><td>r</td><td><input dojoAttachPoint=\"Rval\" size=\"1\"></td></tr>\n\t\t\t<tr><td>g</td><td><input dojoAttachPoint=\"Gval\" size=\"1\"></td></tr>\n\t\t\t<tr><td>b</td><td><input dojoAttachPoint=\"Bval\" size=\"1\"></td></tr>\n\t\t\t</table>\n\t\t</div>\n\t\t<div class=\"dijitInline dojoxColorPickerHsv\" dojoAttachPoint=\"hsvNode\">\n\t\t\t<table>\n\t\t\t<tr><td>h</td><td><input dojoAttachPoint=\"Hval\"size=\"1\"> &deg;</td></tr>\n\t\t\t<tr><td>s</td><td><input dojoAttachPoint=\"Sval\" size=\"1\"> %</td></tr>\n\t\t\t<tr><td>v</td><td><input dojoAttachPoint=\"Vval\" size=\"1\"> %</td></tr>\n\t\t\t</table>\n\t\t</div>\n\t\t<div class=\"dojoxColorPickerHex\" dojoAttachPoint=\"hexNode\">\t\n\t\t\thex: <input dojoAttachPoint=\"hexCode, focusNode\" size=\"6\" class=\"dojoxColorPickerHexCode\">\n\t\t</div>\n\t</div>\n</div>\n",
postCreate: function(){
// summary: As quickly as we can, set up ie6 alpha-filter support for our
// underlay. we don't do image handles (done in css), just the 'core'
// of this widget: the underlay.
if(dojo.isIE && dojo.isIE<7){
this.colorUnderlay.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+this._underlay+"', sizingMethod='scale')";
this.colorUnderlay.src = dojo.moduleUrl("dojox.widget","FisheyeList/blank.gif").toString();
}
// hide toggle-able nodes:
if (!this.showRgb){ this.rgbNode.style.display = "none"; }
if (!this.showHsv){ this.hsvNode.style.display = "none"; }
if (!this.showHex){ this.hexNode.style.display = "none"; }
if (!this.webSafe){ this.safePreviewNode.style.display = "none"; }
},
startup: function(){
// summary: defer all additional calls until we're started, and our
// embeded sliders are loaded? (not implemented yet)
// this._offset = ((dojo.marginBox(this.cursorNode).w)/2);
this._offset = 0;
this._mover = new dojo.dnd.Moveable(this.cursorNode, {
mover: dojo.dnd.boxConstrainedMover({ t:0, l:0, w:150, h:150 })
});
this._hueMover = new dojo.dnd.Moveable(this.hueCursorNode, {
mover: dojo.dnd.boxConstrainedMover({ t:0, l:0, w:0, h:150 })
});
// no dnd/move/move published ... use a timer:
dojo.subscribe("/dnd/move/stop",dojo.hitch(this,"_clearTimer"));
dojo.subscribe("/dnd/move/start",dojo.hitch(this,"_setTimer"));
// ugly scaling calculator. need a XYslider badly
this._sc = (1/dojo.coords(this.colorUnderlay).w);
this._hueSc = (255/(dojo.coords(this.hueNode).h+this._offset));
// initial color
this._updateColor();
},
_setTimer: function(/* dojo.dnd.Mover */mover){
this._timer = setInterval(dojo.hitch(this,"_updateColor"),45);
},
_clearTimer: function(/* dojo.dnd.Mover */mover){
clearInterval(this._timer);
this.onChange(this.value);
},
_setHue: function(/* Decimal */h){
// summary: sets a natural color background for the
// underlay image against closest hue value (full saturation)
// h: 0..255
// this is not a pretty conversion:
var hue = dojo.colorFromArray(this._hsv2rgb(h,1,1,{ inputRange: 1 })).toHex();
dojo.style(this.colorUnderlay,"backgroundColor",hue);
},
_updateColor: function(){
// summary: update the previewNode color, and input values [optional]
var h = Math.round((255+(this._offset))-((dojo.style(this.hueCursorNode,"top")+this._offset)*this._hueSc));
var s = Math.round((dojo.style(this.cursorNode,"left")*this._sc)*100);
var v = Math.round(100-(dojo.style(this.cursorNode,"top")*this._sc)*100);
// limit hue calculations to only when it changes
if(h != this._hue){ this._setHue(h); }
var rgb = this._hsv2rgb(h,s/100,v/100,{ inputRange: 1 });
var hex = (dojo.colorFromArray(rgb).toHex());
this.previewNode.style.backgroundColor = hex;
if(this.webSafe){ this.safePreviewNode.style.backgroundColor = hex; }
if(this.showHex){ this.hexCode.value = hex; }
if(this.showRgb){
this.Rval.value = rgb[0];
this.Gval.value = rgb[1];
this.Bval.value = rgb[2];
}
if(this.showHsv){
this.Hval.value = Math.round((h*360)/255); // convert to 0..360
this.Sval.value = s;
this.Vval.value = v;
}
this.value=hex;
// anytime we muck with the color, fire onChange?
if (!this._timer && !(arguments[1])){
this.setValue(this.value);
this.onChange(this.value);
}
},
_setHuePoint: function(/* Event */evt){
// summary: set the hue picker handle on relative y coordinates
if(this.animatePoint){
dojo.fx.slideTo({
node: this.hueCursorNode,
duration:this.slideDuration,
top: evt.layerY,
left: 0,
onEnd: dojo.hitch(this,"_updateColor")
}).play();
}else{
dojo.style(this.hueCursorNode,"top",(evt.layerY)+"px");
this._updateColor(false);
}
},
_setPoint: function(/* Event */evt){
// summary: set our picker point based on relative x/y coordinates
if(this.animatePoint){
dojo.fx.slideTo({
node: this.cursorNode,
duration:this.slideDuration,
top: evt.layerY-this._offset,
left: evt.layerX-this._offset,
onEnd: dojo.hitch(this,"_updateColor")
}).play();
}else{
dojo.style(this.cursorNode,"left",(evt.layerX-this._offset)+"px");
dojo.style(this.cursorNode,"top",(evt.layerY-this._offset)+"px");
this._updateColor(false);
}
},
// this ported directly from 0.4 dojo.gfx.colors.hsv, with bugs :)
// FIXME: use ttrenka's HSB ?
_hsv2rgb: function(/* int || Array */h, /* int */s, /* int */v, /* Object? */options){
// summary
// converts an HSV value set to RGB, ranges depending on optional options object.
// patch for options by Matthew Eernisse
if (dojo.isArray(h)) {
if(s){
options = s;
}
v = h[2] || 0;
s = h[1] || 0;
h = h[0] || 0;
}
var opt = {
inputRange: (options && options.inputRange) ? options.inputRange : [255, 255, 255],
outputRange: (options && options.outputRange) ? options.outputRange : 255
};
switch(opt.inputRange[0]) {
// 0.0-1.0
case 1: h = h * 360; break;
// 0-100
case 100: h = (h / 100) * 360; break;
// 0-360
case 360: h = h; break;
// 0-255
default: h = (h / 255) * 360;
}
if (h == 360){ h = 0;}
// no need to alter if inputRange[1] = 1
switch(opt.inputRange[1]){
case 100: s /= 100; break;
case 255: s /= 255;
}
// no need to alter if inputRange[1] = 1
switch(opt.inputRange[2]){
case 100: v /= 100; break;
case 255: v /= 255;
}
var r = null;
var g = null;
var b = null;
if (s == 0){
// color is on black-and-white center line
// achromatic: shades of gray
r = v;
g = v;
b = v;
}else{
// chromatic color
var hTemp = h / 60; // h is now IN [0,6]
var i = Math.floor(hTemp); // largest integer <= h
var f = hTemp - i; // fractional part of h
var p = v * (1 - s);
var q = v * (1 - (s * f));
var t = v * (1 - (s * (1 - f)));
switch(i){
case 0: r = v; g = t; b = p; break;
case 1: r = q; g = v; b = p; break;
case 2: r = p; g = v; b = t; break;
case 3: r = p; g = q; b = v; break;
case 4: r = t; g = p; b = v; break;
case 5: r = v; g = p; b = q; break;
}
}
switch(opt.outputRange){
case 1:
r = dojo.math.round(r, 2);
g = dojo.math.round(g, 2);
b = dojo.math.round(b, 2);
break;
case 100:
r = Math.round(r * 100);
g = Math.round(g * 100);
b = Math.round(b * 100);
break;
default:
r = Math.round(r * 255);
g = Math.round(g * 255);
b = Math.round(b * 255);
}
return [r, g, b];
}
});
}

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