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jscolor.js
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/**
* jscolor - JavaScript Color Picker
*
* @link http://jscolor.com
* @license For open source use: GPLv3
* For commercial use: JSColor Commercial License
* @author Jan Odvarko
* @version 2.0.4
*
* See usage examples at http://jscolor.com/examples/
*/
"use strict";
if (!window.jscolor) { window.jscolor = (function () {
var jsc = {
register : function () {
jsc.attachDOMReadyEvent(jsc.init);
jsc.attachEvent(document, 'mousedown', jsc.onDocumentMouseDown);
jsc.attachEvent(document, 'touchstart', jsc.onDocumentTouchStart);
jsc.attachEvent(window, 'resize', jsc.onWindowResize);
},
init : function () {
if (jsc.jscolor.lookupClass) {
jsc.jscolor.installByClassName(jsc.jscolor.lookupClass);
}
},
tryInstallOnElements : function (elms, className) {
var matchClass = new RegExp('(^|\\s)(' + className + ')(\\s*(\\{[^}]*\\})|\\s|$)', 'i');
for (var i = 0; i < elms.length; i += 1) {
if (elms[i].type !== undefined && elms[i].type.toLowerCase() == 'color') {
if (jsc.isColorAttrSupported) {
// skip inputs of type 'color' if supported by the browser
continue;
}
}
var m;
if (!elms[i].jscolor && elms[i].className && (m = elms[i].className.match(matchClass))) {
var targetElm = elms[i];
var optsStr = null;
var dataOptions = jsc.getDataAttr(targetElm, 'jscolor');
if (dataOptions !== null) {
optsStr = dataOptions;
} else if (m[4]) {
optsStr = m[4];
}
var opts = {};
if (optsStr) {
try {
opts = (new Function ('return (' + optsStr + ')'))();
} catch(eParseError) {
jsc.warn('Error parsing jscolor options: ' + eParseError + ':\n' + optsStr);
}
}
targetElm.jscolor = new jsc.jscolor(targetElm, opts);
}
}
},
isColorAttrSupported : (function () {
var elm = document.createElement('input');
if (elm.setAttribute) {
elm.setAttribute('type', 'color');
if (elm.type.toLowerCase() == 'color') {
return true;
}
}
return false;
})(),
isCanvasSupported : (function () {
var elm = document.createElement('canvas');
return !!(elm.getContext && elm.getContext('2d'));
})(),
fetchElement : function (mixed) {
return typeof mixed === 'string' ? document.getElementById(mixed) : mixed;
},
isElementType : function (elm, type) {
return elm.nodeName.toLowerCase() === type.toLowerCase();
},
getDataAttr : function (el, name) {
var attrName = 'data-' + name;
var attrValue = el.getAttribute(attrName);
if (attrValue !== null) {
return attrValue;
}
return null;
},
attachEvent : function (el, evnt, func) {
if (el.addEventListener) {
el.addEventListener(evnt, func, false);
} else if (el.attachEvent) {
el.attachEvent('on' + evnt, func);
}
},
detachEvent : function (el, evnt, func) {
if (el.removeEventListener) {
el.removeEventListener(evnt, func, false);
} else if (el.detachEvent) {
el.detachEvent('on' + evnt, func);
}
},
_attachedGroupEvents : {},
attachGroupEvent : function (groupName, el, evnt, func) {
if (!jsc._attachedGroupEvents.hasOwnProperty(groupName)) {
jsc._attachedGroupEvents[groupName] = [];
}
jsc._attachedGroupEvents[groupName].push([el, evnt, func]);
jsc.attachEvent(el, evnt, func);
},
detachGroupEvents : function (groupName) {
if (jsc._attachedGroupEvents.hasOwnProperty(groupName)) {
for (var i = 0; i < jsc._attachedGroupEvents[groupName].length; i += 1) {
var evt = jsc._attachedGroupEvents[groupName][i];
jsc.detachEvent(evt[0], evt[1], evt[2]);
}
delete jsc._attachedGroupEvents[groupName];
}
},
attachDOMReadyEvent : function (func) {
var fired = false;
var fireOnce = function () {
if (!fired) {
fired = true;
func();
}
};
if (document.readyState === 'complete') {
setTimeout(fireOnce, 1); // async
return;
}
if (document.addEventListener) {
document.addEventListener('DOMContentLoaded', fireOnce, false);
// Fallback
window.addEventListener('load', fireOnce, false);
} else if (document.attachEvent) {
// IE
document.attachEvent('onreadystatechange', function () {
if (document.readyState === 'complete') {
document.detachEvent('onreadystatechange', arguments.callee);
fireOnce();
}
})
// Fallback
window.attachEvent('onload', fireOnce);
// IE7/8
if (document.documentElement.doScroll && window == window.top) {
var tryScroll = function () {
if (!document.body) { return; }
try {
document.documentElement.doScroll('left');
fireOnce();
} catch (e) {
setTimeout(tryScroll, 1);
}
};
tryScroll();
}
}
},
warn : function (msg) {
if (window.console && window.console.warn) {
window.console.warn(msg);
}
},
preventDefault : function (e) {
if (e.preventDefault) { e.preventDefault(); }
e.returnValue = false;
},
captureTarget : function (target) {
// IE
if (target.setCapture) {
jsc._capturedTarget = target;
jsc._capturedTarget.setCapture();
}
},
releaseTarget : function () {
// IE
if (jsc._capturedTarget) {
jsc._capturedTarget.releaseCapture();
jsc._capturedTarget = null;
}
},
fireEvent : function (el, evnt) {
if (!el) {
return;
}
if (document.createEvent) {
var ev = document.createEvent('HTMLEvents');
ev.initEvent(evnt, true, true);
el.dispatchEvent(ev);
} else if (document.createEventObject) {
var ev = document.createEventObject();
el.fireEvent('on' + evnt, ev);
} else if (el['on' + evnt]) { // alternatively use the traditional event model
el['on' + evnt]();
}
},
classNameToList : function (className) {
return className.replace(/^\s+|\s+$/g, '').split(/\s+/);
},
// The className parameter (str) can only contain a single class name
hasClass : function (elm, className) {
if (!className) {
return false;
}
return -1 != (' ' + elm.className.replace(/\s+/g, ' ') + ' ').indexOf(' ' + className + ' ');
},
// The className parameter (str) can contain multiple class names separated by whitespace
setClass : function (elm, className) {
var classList = jsc.classNameToList(className);
for (var i = 0; i < classList.length; i += 1) {
if (!jsc.hasClass(elm, classList[i])) {
elm.className += (elm.className ? ' ' : '') + classList[i];
}
}
},
// The className parameter (str) can contain multiple class names separated by whitespace
unsetClass : function (elm, className) {
var classList = jsc.classNameToList(className);
for (var i = 0; i < classList.length; i += 1) {
var repl = new RegExp(
'^\\s*' + classList[i] + '\\s*|' +
'\\s*' + classList[i] + '\\s*$|' +
'\\s+' + classList[i] + '(\\s+)',
'g'
);
elm.className = elm.className.replace(repl, '$1');
}
},
getStyle : function (elm) {
return window.getComputedStyle ? window.getComputedStyle(elm) : elm.currentStyle;
},
setStyle : (function () {
var helper = document.createElement('div');
var getSupportedProp = function (names) {
for (var i = 0; i < names.length; i += 1) {
if (names[i] in helper.style) {
return names[i];
}
}
};
var props = {
borderRadius: getSupportedProp(['borderRadius', 'MozBorderRadius', 'webkitBorderRadius']),
boxShadow: getSupportedProp(['boxShadow', 'MozBoxShadow', 'webkitBoxShadow'])
};
return function (elm, prop, value) {
switch (prop.toLowerCase()) {
case 'opacity':
var alphaOpacity = Math.round(parseFloat(value) * 100);
elm.style.opacity = value;
elm.style.filter = 'alpha(opacity=' + alphaOpacity + ')';
break;
default:
elm.style[props[prop]] = value;
break;
}
};
})(),
setBorderRadius : function (elm, value) {
jsc.setStyle(elm, 'borderRadius', value || '0');
},
setBoxShadow : function (elm, value) {
jsc.setStyle(elm, 'boxShadow', value || 'none');
},
getElementPos : function (e, relativeToViewport) {
var x=0, y=0;
var rect = e.getBoundingClientRect();
x = rect.left;
y = rect.top;
if (!relativeToViewport) {
var viewPos = jsc.getViewPos();
x += viewPos[0];
y += viewPos[1];
}
return [x, y];
},
getElementSize : function (e) {
return [e.offsetWidth, e.offsetHeight];
},
// get pointer's X/Y coordinates relative to viewport
getAbsPointerPos : function (e) {
if (!e) { e = window.event; }
var x = 0, y = 0;
if (typeof e.changedTouches !== 'undefined' && e.changedTouches.length) {
// touch devices
x = e.changedTouches[0].clientX;
y = e.changedTouches[0].clientY;
} else if (typeof e.clientX === 'number') {
x = e.clientX;
y = e.clientY;
}
return { x: x, y: y };
},
// get pointer's X/Y coordinates relative to target element
getRelPointerPos : function (e) {
if (!e) { e = window.event; }
var target = e.target || e.srcElement;
var targetRect = target.getBoundingClientRect();
var x = 0, y = 0;
var clientX = 0, clientY = 0;
if (typeof e.changedTouches !== 'undefined' && e.changedTouches.length) {
// touch devices
clientX = e.changedTouches[0].clientX;
clientY = e.changedTouches[0].clientY;
} else if (typeof e.clientX === 'number') {
clientX = e.clientX;
clientY = e.clientY;
}
x = clientX - targetRect.left;
y = clientY - targetRect.top;
return { x: x, y: y };
},
getViewPos : function () {
var doc = document.documentElement;
return [
(window.pageXOffset || doc.scrollLeft) - (doc.clientLeft || 0),
(window.pageYOffset || doc.scrollTop) - (doc.clientTop || 0)
];
},
getViewSize : function () {
var doc = document.documentElement;
return [
(window.innerWidth || doc.clientWidth),
(window.innerHeight || doc.clientHeight),
];
},
redrawPosition : function () {
if (jsc.picker && jsc.picker.owner) {
var thisObj = jsc.picker.owner;
var tp, vp;
if (thisObj.fixed) {
// Fixed elements are positioned relative to viewport,
// therefore we can ignore the scroll offset
tp = jsc.getElementPos(thisObj.targetElement, true); // target pos
vp = [0, 0]; // view pos
} else {
tp = jsc.getElementPos(thisObj.targetElement); // target pos
vp = jsc.getViewPos(); // view pos
}
var ts = jsc.getElementSize(thisObj.targetElement); // target size
var vs = jsc.getViewSize(); // view size
var ps = jsc.getPickerOuterDims(thisObj); // picker size
var a, b, c;
switch (thisObj.position.toLowerCase()) {
case 'left': a=1; b=0; c=-1; break;
case 'right':a=1; b=0; c=1; break;
case 'top': a=0; b=1; c=-1; break;
default: a=0; b=1; c=1; break;
}
var l = (ts[b]+ps[b])/2;
// compute picker position
if (!thisObj.smartPosition) {
var pp = [
tp[a],
tp[b]+ts[b]-l+l*c
];
} else {
var pp = [
-vp[a]+tp[a]+ps[a] > vs[a] ?
(-vp[a]+tp[a]+ts[a]/2 > vs[a]/2 && tp[a]+ts[a]-ps[a] >= 0 ? tp[a]+ts[a]-ps[a] : tp[a]) :
tp[a],
-vp[b]+tp[b]+ts[b]+ps[b]-l+l*c > vs[b] ?
(-vp[b]+tp[b]+ts[b]/2 > vs[b]/2 && tp[b]+ts[b]-l-l*c >= 0 ? tp[b]+ts[b]-l-l*c : tp[b]+ts[b]-l+l*c) :
(tp[b]+ts[b]-l+l*c >= 0 ? tp[b]+ts[b]-l+l*c : tp[b]+ts[b]-l-l*c)
];
}
var x = pp[a];
var y = pp[b];
var positionValue = thisObj.fixed ? 'fixed' : 'absolute';
var contractShadow =
(pp[0] + ps[0] > tp[0] || pp[0] < tp[0] + ts[0]) &&
(pp[1] + ps[1] < tp[1] + ts[1]);
jsc._drawPosition(thisObj, x, y, positionValue, contractShadow);
}
},
_drawPosition : function (thisObj, x, y, positionValue, contractShadow) {
var vShadow = contractShadow ? 0 : thisObj.shadowBlur; // px
jsc.picker.wrap.style.position = positionValue;
jsc.picker.wrap.style.left = x + 'px';
jsc.picker.wrap.style.top = y + 'px';
jsc.setBoxShadow(
jsc.picker.boxS,
thisObj.shadow ?
new jsc.BoxShadow(0, vShadow, thisObj.shadowBlur, 0, thisObj.shadowColor) :
null);
},
getPickerDims : function (thisObj) {
var displaySlider = !!jsc.getSliderComponent(thisObj);
var dims = [
2 * thisObj.insetWidth + 2 * thisObj.padding + thisObj.width +
(displaySlider ? 2 * thisObj.insetWidth + jsc.getPadToSliderPadding(thisObj) + thisObj.sliderSize : 0),
2 * thisObj.insetWidth + 2 * thisObj.padding + thisObj.height +
(thisObj.closable ? 2 * thisObj.insetWidth + thisObj.padding + thisObj.buttonHeight : 0)
];
return dims;
},
getPickerOuterDims : function (thisObj) {
var dims = jsc.getPickerDims(thisObj);
return [
dims[0] + 2 * thisObj.borderWidth,
dims[1] + 2 * thisObj.borderWidth
];
},
getPadToSliderPadding : function (thisObj) {
return Math.max(thisObj.padding, 1.5 * (2 * thisObj.pointerBorderWidth + thisObj.pointerThickness));
},
getPadYComponent : function (thisObj) {
switch (thisObj.mode.charAt(1).toLowerCase()) {
case 'v': return 'v'; break;
}
return 's';
},
getSliderComponent : function (thisObj) {
if (thisObj.mode.length > 2) {
switch (thisObj.mode.charAt(2).toLowerCase()) {
case 's': return 's'; break;
case 'v': return 'v'; break;
}
}
return null;
},
onDocumentMouseDown : function (e) {
if (!e) { e = window.event; }
var target = e.target || e.srcElement;
if (target._jscLinkedInstance) {
if (target._jscLinkedInstance.showOnClick) {
target._jscLinkedInstance.show();
}
} else if (target._jscControlName) {
jsc.onControlPointerStart(e, target, target._jscControlName, 'mouse');
} else {
// Mouse is outside the picker controls -> hide the color picker!
if (jsc.picker && jsc.picker.owner) {
jsc.picker.owner.hide();
}
}
},
onDocumentTouchStart : function (e) {
if (!e) { e = window.event; }
var target = e.target || e.srcElement;
if (target._jscLinkedInstance) {
if (target._jscLinkedInstance.showOnClick) {
target._jscLinkedInstance.show();
}
} else if (target._jscControlName) {
jsc.onControlPointerStart(e, target, target._jscControlName, 'touch');
} else {
if (jsc.picker && jsc.picker.owner) {
jsc.picker.owner.hide();
}
}
},
onWindowResize : function (e) {
jsc.redrawPosition();
},
onParentScroll : function (e) {
// hide the picker when one of the parent elements is scrolled
if (jsc.picker && jsc.picker.owner) {
jsc.picker.owner.hide();
}
},
_pointerMoveEvent : {
mouse: 'mousemove',
touch: 'touchmove'
},
_pointerEndEvent : {
mouse: 'mouseup',
touch: 'touchend'
},
_pointerOrigin : null,
_capturedTarget : null,
onControlPointerStart : function (e, target, controlName, pointerType) {
var thisObj = target._jscInstance;
jsc.preventDefault(e);
jsc.captureTarget(target);
var registerDragEvents = function (doc, offset) {
jsc.attachGroupEvent('drag', doc, jsc._pointerMoveEvent[pointerType],
jsc.onDocumentPointerMove(e, target, controlName, pointerType, offset));
jsc.attachGroupEvent('drag', doc, jsc._pointerEndEvent[pointerType],
jsc.onDocumentPointerEnd(e, target, controlName, pointerType));
};
registerDragEvents(document, [0, 0]);
if (window.parent && window.frameElement) {
var rect = window.frameElement.getBoundingClientRect();
var ofs = [-rect.left, -rect.top];
registerDragEvents(window.parent.window.document, ofs);
}
var abs = jsc.getAbsPointerPos(e);
var rel = jsc.getRelPointerPos(e);
jsc._pointerOrigin = {
x: abs.x - rel.x,
y: abs.y - rel.y
};
switch (controlName) {
case 'pad':
// if the slider is at the bottom, move it up
switch (jsc.getSliderComponent(thisObj)) {
case 's': if (thisObj.hsv[1] === 0) { thisObj.fromHSV(null, 100, null); }; break;
case 'v': if (thisObj.hsv[2] === 0) { thisObj.fromHSV(null, null, 100); }; break;
}
jsc.setPad(thisObj, e, 0, 0);
break;
case 'sld':
jsc.setSld(thisObj, e, 0);
break;
}
jsc.dispatchFineChange(thisObj);
},
onDocumentPointerMove : function (e, target, controlName, pointerType, offset) {
return function (e) {
var thisObj = target._jscInstance;
switch (controlName) {
case 'pad':
if (!e) { e = window.event; }
jsc.setPad(thisObj, e, offset[0], offset[1]);
jsc.dispatchFineChange(thisObj);
break;
case 'sld':
if (!e) { e = window.event; }
jsc.setSld(thisObj, e, offset[1]);
jsc.dispatchFineChange(thisObj);
break;
}
}
},
onDocumentPointerEnd : function (e, target, controlName, pointerType) {
return function (e) {
var thisObj = target._jscInstance;
jsc.detachGroupEvents('drag');
jsc.releaseTarget();
// Always dispatch changes after detaching outstanding mouse handlers,
// in case some user interaction will occur in user's onchange callback
// that would intrude with current mouse events
jsc.dispatchChange(thisObj);
jsc.dispatchOnChange(thisObj);
};
},
dispatchChange : function (thisObj) {
if (thisObj.valueElement) {
if (jsc.isElementType(thisObj.valueElement, 'input')) {
jsc.fireEvent(thisObj.valueElement, 'change');
}
}
},
dispatchOnChange : function(thisObj){
if(thisObj.onChange){
var callback;
if (typeof thisObj.onChange === 'string'){
callback = new Function (thisObj.onChange);
} else {
callback = thisObj.onChange;
}
callback.call(thisObj);
}
},
dispatchFineChange : function (thisObj) {
if (thisObj.onFineChange) {
var callback;
if (typeof thisObj.onFineChange === 'string') {
callback = new Function (thisObj.onFineChange);
} else {
callback = thisObj.onFineChange;
}
callback.call(thisObj);
}
},
setPad : function (thisObj, e, ofsX, ofsY) {
var pointerAbs = jsc.getAbsPointerPos(e);
var x = ofsX + pointerAbs.x - jsc._pointerOrigin.x - thisObj.padding - thisObj.insetWidth;
var y = ofsY + pointerAbs.y - jsc._pointerOrigin.y - thisObj.padding - thisObj.insetWidth;
var xVal = x * (360 / (thisObj.width - 1));
var yVal = 100 - (y * (100 / (thisObj.height - 1)));
switch (jsc.getPadYComponent(thisObj)) {
case 's': thisObj.fromHSV(xVal, yVal, null, jsc.leaveSld); break;
case 'v': thisObj.fromHSV(xVal, null, yVal, jsc.leaveSld); break;
}
},
setSld : function (thisObj, e, ofsY) {
var pointerAbs = jsc.getAbsPointerPos(e);
var y = ofsY + pointerAbs.y - jsc._pointerOrigin.y - thisObj.padding - thisObj.insetWidth;
var yVal = 100 - (y * (100 / (thisObj.height - 1)));
switch (jsc.getSliderComponent(thisObj)) {
case 's': thisObj.fromHSV(null, yVal, null, jsc.leavePad); break;
case 'v': thisObj.fromHSV(null, null, yVal, jsc.leavePad); break;
}
},
_vmlNS : 'jsc_vml_',
_vmlCSS : 'jsc_vml_css_',
_vmlReady : false,
initVML : function () {
if (!jsc._vmlReady) {
// init VML namespace
var doc = document;
if (!doc.namespaces[jsc._vmlNS]) {
doc.namespaces.add(jsc._vmlNS, 'urn:schemas-microsoft-com:vml');
}
if (!doc.styleSheets[jsc._vmlCSS]) {
var tags = ['shape', 'shapetype', 'group', 'background', 'path', 'formulas', 'handles', 'fill', 'stroke', 'shadow', 'textbox', 'textpath', 'imagedata', 'line', 'polyline', 'curve', 'rect', 'roundrect', 'oval', 'arc', 'image'];
var ss = doc.createStyleSheet();
ss.owningElement.id = jsc._vmlCSS;
for (var i = 0; i < tags.length; i += 1) {
ss.addRule(jsc._vmlNS + '\\:' + tags[i], 'behavior:url(#default#VML);');
}
}
jsc._vmlReady = true;
}
},
createPalette : function () {
var paletteObj = {
elm: null,
draw: null
};
if (jsc.isCanvasSupported) {
// Canvas implementation for modern browsers
var canvas = document.createElement('canvas');
var ctx = canvas.getContext('2d');
var drawFunc = function (width, height, type) {
canvas.width = width;
canvas.height = height;
ctx.clearRect(0, 0, canvas.width, canvas.height);
var hGrad = ctx.createLinearGradient(0, 0, canvas.width, 0);
hGrad.addColorStop(0 / 6, '#F00');
hGrad.addColorStop(1 / 6, '#FF0');
hGrad.addColorStop(2 / 6, '#0F0');
hGrad.addColorStop(3 / 6, '#0FF');
hGrad.addColorStop(4 / 6, '#00F');
hGrad.addColorStop(5 / 6, '#F0F');
hGrad.addColorStop(6 / 6, '#F00');
ctx.fillStyle = hGrad;
ctx.fillRect(0, 0, canvas.width, canvas.height);
var vGrad = ctx.createLinearGradient(0, 0, 0, canvas.height);
switch (type.toLowerCase()) {
case 's':
vGrad.addColorStop(0, 'rgba(255,255,255,0)');
vGrad.addColorStop(1, 'rgba(255,255,255,1)');
break;
case 'v':
vGrad.addColorStop(0, 'rgba(0,0,0,0)');
vGrad.addColorStop(1, 'rgba(0,0,0,1)');
break;
}
ctx.fillStyle = vGrad;
ctx.fillRect(0, 0, canvas.width, canvas.height);
};
paletteObj.elm = canvas;
paletteObj.draw = drawFunc;
} else {
// VML fallback for IE 7 and 8
jsc.initVML();
var vmlContainer = document.createElement('div');
vmlContainer.style.position = 'relative';
vmlContainer.style.overflow = 'hidden';
var hGrad = document.createElement(jsc._vmlNS + ':fill');
hGrad.type = 'gradient';
hGrad.method = 'linear';
hGrad.angle = '90';
hGrad.colors = '16.67% #F0F, 33.33% #00F, 50% #0FF, 66.67% #0F0, 83.33% #FF0'
var hRect = document.createElement(jsc._vmlNS + ':rect');
hRect.style.position = 'absolute';
hRect.style.left = -1 + 'px';
hRect.style.top = -1 + 'px';
hRect.stroked = false;
hRect.appendChild(hGrad);
vmlContainer.appendChild(hRect);
var vGrad = document.createElement(jsc._vmlNS + ':fill');
vGrad.type = 'gradient';
vGrad.method = 'linear';
vGrad.angle = '180';
vGrad.opacity = '0';
var vRect = document.createElement(jsc._vmlNS + ':rect');
vRect.style.position = 'absolute';
vRect.style.left = -1 + 'px';
vRect.style.top = -1 + 'px';
vRect.stroked = false;
vRect.appendChild(vGrad);
vmlContainer.appendChild(vRect);
var drawFunc = function (width, height, type) {
vmlContainer.style.width = width + 'px';
vmlContainer.style.height = height + 'px';
hRect.style.width =
vRect.style.width =
(width + 1) + 'px';
hRect.style.height =
vRect.style.height =
(height + 1) + 'px';
// Colors must be specified during every redraw, otherwise IE won't display
// a full gradient during a subsequential redraw
hGrad.color = '#F00';
hGrad.color2 = '#F00';
switch (type.toLowerCase()) {
case 's':
vGrad.color = vGrad.color2 = '#FFF';
break;
case 'v':
vGrad.color = vGrad.color2 = '#000';
break;
}
};
paletteObj.elm = vmlContainer;
paletteObj.draw = drawFunc;
}
return paletteObj;
},
createSliderGradient : function () {
var sliderObj = {
elm: null,
draw: null
};
if (jsc.isCanvasSupported) {
// Canvas implementation for modern browsers
var canvas = document.createElement('canvas');
var ctx = canvas.getContext('2d');
var drawFunc = function (width, height, color1, color2) {
canvas.width = width;
canvas.height = height;
ctx.clearRect(0, 0, canvas.width, canvas.height);
var grad = ctx.createLinearGradient(0, 0, 0, canvas.height);
grad.addColorStop(0, color1);
grad.addColorStop(1, color2);
ctx.fillStyle = grad;
ctx.fillRect(0, 0, canvas.width, canvas.height);
};
sliderObj.elm = canvas;
sliderObj.draw = drawFunc;
} else {
// VML fallback for IE 7 and 8
jsc.initVML();
var vmlContainer = document.createElement('div');
vmlContainer.style.position = 'relative';
vmlContainer.style.overflow = 'hidden';
var grad = document.createElement(jsc._vmlNS + ':fill');
grad.type = 'gradient';
grad.method = 'linear';
grad.angle = '180';
var rect = document.createElement(jsc._vmlNS + ':rect');
rect.style.position = 'absolute';
rect.style.left = -1 + 'px';
rect.style.top = -1 + 'px';
rect.stroked = false;
rect.appendChild(grad);
vmlContainer.appendChild(rect);
var drawFunc = function (width, height, color1, color2) {
vmlContainer.style.width = width + 'px';
vmlContainer.style.height = height + 'px';
rect.style.width = (width + 1) + 'px';
rect.style.height = (height + 1) + 'px';
grad.color = color1;
grad.color2 = color2;
};
sliderObj.elm = vmlContainer;
sliderObj.draw = drawFunc;
}
return sliderObj;
},
leaveValue : 1<<0,
leaveStyle : 1<<1,
leavePad : 1<<2,
leaveSld : 1<<3,
BoxShadow : (function () {
var BoxShadow = function (hShadow, vShadow, blur, spread, color, inset) {
this.hShadow = hShadow;
this.vShadow = vShadow;
this.blur = blur;
this.spread = spread;
this.color = color;
this.inset = !!inset;
};
BoxShadow.prototype.toString = function () {
var vals = [
Math.round(this.hShadow) + 'px',
Math.round(this.vShadow) + 'px',
Math.round(this.blur) + 'px',
Math.round(this.spread) + 'px',
this.color
];
if (this.inset) {
vals.push('inset');
}
return vals.join(' ');
};
return BoxShadow;
})(),
//
// Usage:
// var myColor = new jscolor(<targetElement> [, <options>])
//
jscolor : function (targetElement, options) {
// General options
//
this.value = null; // initial HEX color. To change it later, use methods fromString(), fromHSV() and fromRGB()
this.valueElement = targetElement; // element that will be used to display and input the color code
this.styleElement = targetElement; // element that will preview the picked color using CSS backgroundColor
this.required = true; // whether the associated text <input> can be left empty
this.refine = true; // whether to refine the entered color code (e.g. uppercase it and remove whitespace)
this.hash = false; // whether to prefix the HEX color code with # symbol
this.uppercase = true; // whether to uppercase the color code