鼠标悬停在图像上以获取颜色选择器
HTML：
<img src="../../images/fillpaint3.png" id="fillpaint" alt="fill paint">
我只能通过点击文字字段
我想在单击图像而不是文本框后显示颜色选择器。知道我该怎么办？
Jquery的
var jscolor = {
var e = document.getElementsByTagName('base');
for(var i=0; i<e.length; i+=1) {
if(e[i].href) { base = e[i].href; }
}
var e = document.getElementsByTagName('script');
for(var i=0; i<e.length; i+=1) {
if(e[i].src && /(^|\/)jscolor\.js([?#].*)?$/i.test(e[i].src)) {
var src = new jscolor.URI(e[i].src);
var srcAbs = src.toAbsolute(base);
srcAbs.path = srcAbs.path.replace(/[^\/]+$/, ''); // remove filename
srcAbs.query = null;
srcAbs.fragment = null;
return srcAbs.toString();
}
}
return false;
},
bind : function() {
var matchClass = new RegExp('(^|\\s)('+jscolor.bindClass+')(\\s*(\\{[^}]*\\})|\\s|$)', 'i');
var e = document.getElementsByTagName('input');
for(var i=0; i<e.length; i+=1) {
if(jscolor.isColorAttrSupported && e[i].type.toLowerCase() == 'color') {
// skip inputs of type 'color' if the browser supports this feature
continue;
}
var m;
if(!e[i].color && e[i].className && (m = e[i].className.match(matchClass))) {
var prop = {};
if(m[4]) {
try {
prop = (new Function ('return (' + m[4] + ')'))();
} catch(eInvalidProp) {}
}
e[i].color = new jscolor.color(e[i], prop);
}
}
},
preload : function() {
for(var fn in jscolor.imgRequire) {
if(jscolor.imgRequire.hasOwnProperty(fn)) {
jscolor.loadImage(fn);
}
}
},
images : {
pad : [ 181, 101 ],
sld : [ 16, 101 ],
cross : [ 15, 15 ],
arrow : [ 7, 11 ]
},
imgRequire : {},
imgLoaded : {},
requireImage : function(filename) {
jscolor.imgRequire[filename] = true;
},
loadImage : function(filename) {
if(!jscolor.imgLoaded[filename]) {
jscolor.imgLoaded[filename] = new Image();
jscolor.imgLoaded[filename].src = jscolor.getDir()+filename;
}
},
fetchElement : function(mixed) {
return typeof mixed === 'string' ? document.getElementById(mixed) : mixed;
},
addEvent : function(el, evnt, func) {
if(el.addEventListener) {
el.addEventListener(evnt, func, false);
} else if(el.attachEvent) {
el.attachEvent('on'+evnt, func);
}
},
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 (IE5)
el['on'+evnt]();
}
},
getElementPos : function(e) {
var e1=e, e2=e;
var x=0, y=0;
if(e1.offsetParent) {
do {
x += e1.offsetLeft;
y += e1.offsetTop;
} while(e1 = e1.offsetParent);
}
while((e2 = e2.parentNode) && e2.nodeName.toUpperCase() !== 'BODY') {
x -= e2.scrollLeft;
y -= e2.scrollTop;
}
return [x, y];
},
getElementSize : function(e) {
return [e.offsetWidth, e.offsetHeight];
},
getRelMousePos : function(e) {
var x = 0, y = 0;
if (!e) { e = window.event; }
if (typeof e.offsetX === 'number') {
x = e.offsetX;
y = e.offsetY;
} else if (typeof e.layerX === 'number') {
x = e.layerX;
y = e.layerY;
}
return { x: x, y: y };
},
getViewPos : function() {
if(typeof window.pageYOffset === 'number') {
return [window.pageXOffset, window.pageYOffset];
} else if(document.body && (document.body.scrollLeft || document.body.scrollTop)) {
return [document.body.scrollLeft, document.body.scrollTop];
} else if(document.documentElement && (document.documentElement.scrollLeft || document.documentElement.scrollTop)) {
return [document.documentElement.scrollLeft, document.documentElement.scrollTop];
} else {
return [0, 0];
}
},
getViewSize : function() {
if(typeof window.innerWidth === 'number') {
return [window.innerWidth, window.innerHeight];
} else if(document.body && (document.body.clientWidth || document.body.clientHeight)) {
return [document.body.clientWidth, document.body.clientHeight];
} else if(document.documentElement && (document.documentElement.clientWidth || document.documentElement.clientHeight)) {
return [document.documentElement.clientWidth, document.documentElement.clientHeight];
} else {
return [0, 0];
}
},
URI : function(uri) { // See RFC3986
this.scheme = null;
this.authority = null;
this.path = '';
this.query = null;
this.fragment = null;
this.parse = function(uri) {
var m = uri.match(/^(([A-Za-z][0-9A-Za-z+.-]*)(:))?((\/\/)([^\/?#]*))?([^?#]*)((\?)([^#]*))?((#)(.*))?/);
this.scheme = m[3] ? m[2] : null;
this.authority = m[5] ? m[6] : null;
this.path = m[7];
this.query = m[9] ? m[10] : null;
this.fragment = m[12] ? m[13] : null;
return this;
};
this.toString = function() {
var result = '';
if(this.scheme !== null) { result = result + this.scheme + ':'; }
if(this.authority !== null) { result = result + '//' + this.authority; }
if(this.path !== null) { result = result + this.path; }
if(this.query !== null) { result = result + '?' + this.query; }
if(this.fragment !== null) { result = result + '#' + this.fragment; }
return result;
};
this.toAbsolute = function(base) {
var base = new jscolor.URI(base);
var r = this;
var t = new jscolor.URI;
if(base.scheme === null) { return false; }
if(r.scheme !== null && r.scheme.toLowerCase() === base.scheme.toLowerCase()) {
r.scheme = null;
}
if(r.scheme !== null) {
t.scheme = r.scheme;
t.authority = r.authority;
t.path = removeDotSegments(r.path);
t.query = r.query;
} else {
if(r.authority !== null) {
t.authority = r.authority;
t.path = removeDotSegments(r.path);
t.query = r.query;
} else {
if(r.path === '') {
t.path = base.path;
if(r.query !== null) {
t.query = r.query;
} else {
t.query = base.query;
}
} else {
if(r.path.substr(0,1) === '/') {
t.path = removeDotSegments(r.path);
} else {
if(base.authority !== null && base.path === '') {
t.path = '/'+r.path;
} else {
t.path = base.path.replace(/[^\/]+$/,'')+r.path;
}
t.path = removeDotSegments(t.path);
}
t.query = r.query;
}
t.authority = base.authority;
}
t.scheme = base.scheme;
}
t.fragment = r.fragment;
return t;
};
function removeDotSegments(path) {
var out = '';
while(path) {
if(path.substr(0,3)==='../' || path.substr(0,2)==='./') {
path = path.replace(/^\.+/,'').substr(1);
} else if(path.substr(0,3)==='/./' || path==='/.') {
path = '/'+path.substr(3);
} else if(path.substr(0,4)==='/../' || path==='/..') {
path = '/'+path.substr(4);
out = out.replace(/\/?[^\/]*$/, '');
} else if(path==='.' || path==='..') {
path = '';
} else {
var rm = path.match(/^\/?[^\/]*/)[0];
path = path.substr(rm.length);
out = out + rm;
}
}
return out;
}
if(uri) {
this.parse(uri);
}
},
//
// Usage example:
// var myColor = new jscolor.color(myInputElement)
//
color : function(target, prop) {
this.required = true; // refuse empty values?
this.adjust = true; // adjust value to uniform notation?
this.hash = false; // prefix color with # symbol?
this.caps = true; // uppercase?
this.slider = true; // show the value/saturation slider?
this.valueElement = target; // value holder
this.styleElement = target; // where to reflect current color
this.onImmediateChange = null; // onchange callback (can be either string or function)
this.hsv = [0, 0, 1]; // read-only 0-6, 0-1, 0-1
this.rgb = [1, 1, 1]; // read-only 0-1, 0-1, 0-1
this.minH = 0; // read-only 0-6
this.maxH = 6; // read-only 0-6
this.minS = 0; // read-only 0-1
this.maxS = 1; // read-only 0-1
this.minV = 0; // read-only 0-1
this.maxV = 1; // read-only 0-1
this.pickerOnfocus = true; // display picker on focus?
this.pickerMode = 'HSV'; // HSV | HVS
this.pickerPosition = 'bottom'; // left | right | top | bottom
this.pickerSmartPosition = true; // automatically adjust picker position when necessary
this.pickerFixedPosition = false; // set to true to stop picker from moving on scroll
this.pickerButtonHeight = 20; // px
this.pickerClosable = false;
this.pickerCloseText = 'Close';
this.pickerButtonColor = 'ButtonText'; // px
this.pickerFace = 10; // px
this.pickerFaceColor = 'ThreeDFace'; // CSS color
this.pickerBorder = 1; // px
this.pickerBorderColor = 'ThreeDHighlight ThreeDShadow ThreeDShadow ThreeDHighlight'; // CSS color
this.pickerInset = 1; // px
this.pickerInsetColor = 'ThreeDShadow ThreeDHighlight ThreeDHighlight ThreeDShadow'; // CSS color
this.pickerZIndex = 10000;
for(var p in prop) {
if(prop.hasOwnProperty(p)) {
this[p] = prop[p];
}
}
this.hidePicker = function() {
if(isPickerOwner()) {
removePicker();
}
};
this.showPicker = function() {
if(!isPickerOwner()) {
var tp = jscolor.getElementPos(target); // target pos
var ts = jscolor.getElementSize(target); // target size
var vp = jscolor.getViewPos(); // view pos
var vs = jscolor.getViewSize(); // view size
var ps = getPickerDims(this); // picker size
var a, b, c;
switch(this.pickerPosition.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;
// picker pos
if (!this.pickerSmartPosition) {
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)
];
}
drawPicker(pp[a], pp[b]);
}
};
this.importColor = function() {
if(!valueElement) {
this.exportColor();
} else {
if(!this.adjust) {
if(!this.fromString(valueElement.value, leaveValue)) {
styleElement.style.backgroundImage = styleElement.jscStyle.backgroundImage;
styleElement.style.backgroundColor = styleElement.jscStyle.backgroundColor;
styleElement.style.color = styleElement.jscStyle.color;
this.exportColor(leaveValue | leaveStyle);
}
} else if(!this.required && /^\s*$/.test(valueElement.value)) {
valueElement.value = '';
styleElement.style.backgroundImage = styleElement.jscStyle.backgroundImage;
styleElement.style.backgroundColor = styleElement.jscStyle.backgroundColor;
styleElement.style.color = styleElement.jscStyle.color;
this.exportColor(leaveValue | leaveStyle);
} else if(this.fromString(valueElement.value)) {
// OK
} else {
this.exportColor();
}
}
};
this.exportColor = function(flags) {
if(!(flags & leaveValue) && valueElement) {
var value = this.toString();
if(this.caps) { value = value.toUpperCase(); }
if(this.hash) { value = '#'+value; }
valueElement.value = value;
}
if(!(flags & leaveStyle) && styleElement) {
styleElement.style.backgroundImage = "none";
styleElement.style.backgroundColor =
'#'+this.toString();
styleElement.style.color =
0.213 * this.rgb[0] +
0.715 * this.rgb[1] +
0.072 * this.rgb[2]
< 0.5 ? '#FFF' : '#000';
}
if(!(flags & leavePad) && isPickerOwner()) {
redrawPad();
}
if(!(flags & leaveSld) && isPickerOwner()) {
redrawSld();
}
};
this.fromHSV = function(h, s, v, flags) { // null = don't change
if(h !== null) { h = Math.max(0.0, this.minH, Math.min(6.0, this.maxH, h)); }
if(s !== null) { s = Math.max(0.0, this.minS, Math.min(1.0, this.maxS, s)); }
if(v !== null) { v = Math.max(0.0, this.minV, Math.min(1.0, this.maxV, v)); }
this.rgb = HSV_RGB(
h===null ? this.hsv[0] : (this.hsv[0]=h),
s===null ? this.hsv[1] : (this.hsv[1]=s),
v===null ? this.hsv[2] : (this.hsv[2]=v)
);
this.exportColor(flags);
};
this.fromRGB = function(r, g, b, flags) { // null = don't change
if(r !== null) { r = Math.max(0.0, Math.min(1.0, r)); }
if(g !== null) { g = Math.max(0.0, Math.min(1.0, g)); }
if(b !== null) { b = Math.max(0.0, Math.min(1.0, b)); }
var hsv = RGB_HSV(
r===null ? this.rgb[0] : r,
g===null ? this.rgb[1] : g,
b===null ? this.rgb[2] : b
);
if(hsv[0] !== null) {
this.hsv[0] = Math.max(0.0, this.minH, Math.min(6.0, this.maxH, hsv[0]));
}
if(hsv[2] !== 0) {
this.hsv[1] = hsv[1]===null ? null : Math.max(0.0, this.minS, Math.min(1.0, this.maxS, hsv[1]));
}
this.hsv[2] = hsv[2]===null ? null : Math.max(0.0, this.minV, Math.min(1.0, this.maxV, hsv[2]));
// update RGB according to final HSV, as some values might be trimmed
var rgb = HSV_RGB(this.hsv[0], this.hsv[1], this.hsv[2]);
this.rgb[0] = rgb[0];
this.rgb[1] = rgb[1];
this.rgb[2] = rgb[2];
this.exportColor(flags);
};
this.fromString = function(hex, flags) {
var m = hex.match(/^\W*([0-9A-F]{3}([0-9A-F]{3})?)\W*$/i);
if(!m) {
return false;
} else {
if(m[1].length === 6) { // 6-char notation
this.fromRGB(
parseInt(m[1].substr(0,2),16) / 255,
parseInt(m[1].substr(2,2),16) / 255,
parseInt(m[1].substr(4,2),16) / 255,
flags
);
} else { // 3-char notation
this.fromRGB(
parseInt(m[1].charAt(0)+m[1].charAt(0),16) / 255,
parseInt(m[1].charAt(1)+m[1].charAt(1),16) / 255,
parseInt(m[1].charAt(2)+m[1].charAt(2),16) / 255,
flags
);
}
return true;
}
};
this.toString = function() {
return (
(0x100 | Math.round(255*this.rgb[0])).toString(16).substr(1) +
(0x100 | Math.round(255*this.rgb[1])).toString(16).substr(1) +
(0x100 | Math.round(255*this.rgb[2])).toString(16).substr(1)
);
};
function RGB_HSV(r, g, b) {
var n = Math.min(Math.min(r,g),b);
var v = Math.max(Math.max(r,g),b);
var m = v - n;
if(m === 0) { return [ null, 0, v ]; }
var h = r===n ? 3+(b-g)/m : (g===n ? 5+(r-b)/m : 1+(g-r)/m);
return [ h===6?0:h, m/v, v ];
}
function HSV_RGB(h, s, v) {
if(h === null) { return [ v, v, v ]; }
var i = Math.floor(h);
var f = i%2 ? h-i : 1-(h-i);
var m = v * (1 - s);
var n = v * (1 - s*f);
switch(i) {
case 6:
case 0: return [v,n,m];
case 1: return [n,v,m];
case 2: return [m,v,n];
case 3: return [m,n,v];
case 4: return [n,m,v];
case 5: return [v,m,n];
}
}
function removePicker() {
delete jscolor.picker.owner;
document.getElementsByTagName('body')[0].removeChild(jscolor.picker.boxB);
}
function drawPicker(x, y) {
if(!jscolor.picker) {
jscolor.picker = {
box : document.createElement('div'),
boxB : document.createElement('div'),
pad : document.createElement('div'),
padB : document.createElement('div'),
padM : document.createElement('div'),
sld : document.createElement('div'),
sldB : document.createElement('div'),
sldM : document.createElement('div'),
btn : document.createElement('div'),
btnS : document.createElement('span'),
btnT : document.createTextNode(THIS.pickerCloseText)
};
for(var i=0,segSize=4; i<jscolor.images.sld[1]; i+=segSize) {
var seg = document.createElement('div');
seg.style.height = segSize+'px';
seg.style.fontSize = '1px';
seg.style.lineHeight = '0';
jscolor.picker.sld.appendChild(seg);
}
jscolor.picker.sldB.appendChild(jscolor.picker.sld);
jscolor.picker.box.appendChild(jscolor.picker.sldB);
jscolor.picker.box.appendChild(jscolor.picker.sldM);
jscolor.picker.padB.appendChild(jscolor.picker.pad);
jscolor.picker.box.appendChild(jscolor.picker.padB);
jscolor.picker.box.appendChild(jscolor.picker.padM);
jscolor.picker.btnS.appendChild(jscolor.picker.btnT);
jscolor.picker.btn.appendChild(jscolor.picker.btnS);
jscolor.picker.box.appendChild(jscolor.picker.btn);
jscolor.picker.boxB.appendChild(jscolor.picker.box);
}
var p = jscolor.picker;
// controls interaction
p.box.onmouseup =
p.box.onmouseout = function() { target.focus(); };
p.box.onmousedown = function() { abortBlur=true; };
p.box.onmousemove = function(e) {
if (holdPad || holdSld) {
holdPad && setPad(e);
holdSld && setSld(e);
if (document.selection) {
document.selection.empty();
} else if (window.getSelection) {
window.getSelection().removeAllRanges();
}
dispatchImmediateChange();
}
};
if('ontouchstart' in window) { // if touch device
var handle_touchmove = function(e) {
var event={
'offsetX': e.touches[0].pageX-touchOffset.X,
'offsetY': e.touches[0].pageY-touchOffset.Y
};
if (holdPad || holdSld) {
holdPad && setPad(event);
holdSld && setSld(event);
dispatchImmediateChange();
}
e.stopPropagation(); // prevent move "view" on broswer
e.preventDefault(); // prevent Default - Android Fix (else android generated only 1-2 touchmove events)
};
p.box.removeEventListener('touchmove', handle_touchmove, false)
p.box.addEventListener('touchmove', handle_touchmove, false)
}
p.padM.onmouseup =
p.padM.onmouseout = function() { if(holdPad) { holdPad=false; jscolor.fireEvent(valueElement,'change'); } };
p.padM.onmousedown = function(e) {
// if the slider is at the bottom, move it up
switch(modeID) {
case 0: if (THIS.hsv[2] === 0) { THIS.fromHSV(null, null, 1.0); }; break;
case 1: if (THIS.hsv[1] === 0) { THIS.fromHSV(null, 1.0, null); }; break;
}
holdSld=false;
holdPad=true;
setPad(e);
dispatchImmediateChange();
};
if('ontouchstart' in window) {
p.padM.addEventListener('touchstart', function(e) {
touchOffset={
'X': e.target.offsetParent.offsetLeft,
'Y': e.target.offsetParent.offsetTop
};
this.onmousedown({
'offsetX':e.touches[0].pageX-touchOffset.X,
'offsetY':e.touches[0].pageY-touchOffset.Y
});
});
}
p.sldM.onmouseup =
p.sldM.onmouseout = function() { if(holdSld) { holdSld=false; jscolor.fireEvent(valueElement,'change'); } };
p.sldM.onmousedown = function(e) {
holdPad=false;
holdSld=true;
setSld(e);
dispatchImmediateChange();
};
if('ontouchstart' in window) {
p.sldM.addEventListener('touchstart', function(e) {
touchOffset={
'X': e.target.offsetParent.offsetLeft,
'Y': e.target.offsetParent.offsetTop
};
this.onmousedown({
'offsetX':e.touches[0].pageX-touchOffset.X,
'offsetY':e.touches[0].pageY-touchOffset.Y
});
});
}
// picker
var dims = getPickerDims(THIS);
p.box.style.width = dims[0] + 'px';
p.box.style.height = dims[1] + 'px';
// picker border
p.boxB.style.position = THIS.pickerFixedPosition ? 'fixed' : 'absolute';
p.boxB.style.clear = 'both';
p.boxB.style.left = x+'px';
p.boxB.style.top = y+'px';
p.boxB.style.zIndex = THIS.pickerZIndex;
p.boxB.style.border = THIS.pickerBorder+'px solid';
p.boxB.style.borderColor = THIS.pickerBorderColor;
p.boxB.style.background = THIS.pickerFaceColor;
// pad image
p.pad.style.width = jscolor.images.pad[0]+'px';
p.pad.style.height = jscolor.images.pad[1]+'px';
// pad border
p.padB.style.position = 'absolute';
p.padB.style.left = THIS.pickerFace+'px';
p.padB.style.top = THIS.pickerFace+'px';
p.padB.style.border = THIS.pickerInset+'px solid';
p.padB.style.borderColor = THIS.pickerInsetColor;
// pad mouse area
p.padM.style.position = 'absolute';
p.padM.style.left = '0';
p.padM.style.top = '0';
p.padM.style.width = THIS.pickerFace + 2*THIS.pickerInset + jscolor.images.pad[0] + jscolor.images.arrow[0] + 'px';
p.padM.style.height = p.box.style.height;
p.padM.style.cursor = 'crosshair';
// slider image
p.sld.style.overflow = 'hidden';
p.sld.style.width = jscolor.images.sld[0]+'px';
p.sld.style.height = jscolor.images.sld[1]+'px';
// slider border
p.sldB.style.display = THIS.slider ? 'block' : 'none';
p.sldB.style.position = 'absolute';
p.sldB.style.right = THIS.pickerFace+'px';
p.sldB.style.top = THIS.pickerFace+'px';
p.sldB.style.border = THIS.pickerInset+'px solid';
p.sldB.style.borderColor = THIS.pickerInsetColor;
// slider mouse area
p.sldM.style.display = THIS.slider ? 'block' : 'none';
p.sldM.style.position = 'absolute';
p.sldM.style.right = '0';
p.sldM.style.top = '0';
p.sldM.style.width = jscolor.images.sld[0] + jscolor.images.arrow[0] + THIS.pickerFace + 2*THIS.pickerInset + 'px';
p.sldM.style.height = p.box.style.height;
try {
p.sldM.style.cursor = 'pointer';
} catch(eOldIE) {
p.sldM.style.cursor = 'hand';
}
// "close" button
function setBtnBorder() {
var insetColors = THIS.pickerInsetColor.split(/\s+/);
var pickerOutsetColor = insetColors.length < 2 ? insetColors[0] : insetColors[1] + ' ' + insetColors[0] + ' ' + insetColors[0] + ' ' + insetColors[1];
p.btn.style.borderColor = pickerOutsetColor;
}
p.btn.style.display = THIS.pickerClosable ? 'block' : 'none';
p.btn.style.position = 'absolute';
p.btn.style.left = THIS.pickerFace + 'px';
p.btn.style.bottom = THIS.pickerFace + 'px';
p.btn.style.padding = '0 15px';
p.btn.style.height = '18px';
p.btn.style.border = THIS.pickerInset + 'px solid';
setBtnBorder();
p.btn.style.color = THIS.pickerButtonColor;
p.btn.style.font = '12px sans-serif';
p.btn.style.textAlign = 'center';
try {
p.btn.style.cursor = 'pointer';
} catch(eOldIE) {
p.btn.style.cursor = 'hand';
}
p.btn.onmousedown = function () {
THIS.hidePicker();
};
p.btnS.style.lineHeight = p.btn.style.height;
// load images in optimal order
switch(modeID) {
case 0: var padImg = 'hs.png'; break;
case 1: var padImg = 'hv.png'; break;
}
p.padM.style.backgroundImage = "url('"+jscolor.getDir()+"cross.gif')";
p.padM.style.backgroundRepeat = "no-repeat";
p.sldM.style.backgroundImage = "url('"+jscolor.getDir()+"arrow.gif')";
p.sldM.style.backgroundRepeat = "no-repeat";
p.pad.style.backgroundImage = "url('"+jscolor.getDir()+padImg+"')";
p.pad.style.backgroundRepeat = "no-repeat";
p.pad.style.backgroundPosition = "0 0";
// place pointers
redrawPad();
redrawSld();
jscolor.picker.owner = THIS;
document.getElementsByTagName('body')[0].appendChild(p.boxB);
}
function getPickerDims(o) {
var dims = [
2*o.pickerInset + 2*o.pickerFace + jscolor.images.pad[0] +
(o.slider ? 2*o.pickerInset + 2*jscolor.images.arrow[0] + jscolor.images.sld[0] : 0),
o.pickerClosable ?
4*o.pickerInset + 3*o.pickerFace + jscolor.images.pad[1] + o.pickerButtonHeight :
2*o.pickerInset + 2*o.pickerFace + jscolor.images.pad[1]
];
return dims;
}
function redrawPad() {
// redraw the pad pointer
switch(modeID) {
case 0: var yComponent = 1; break;
case 1: var yComponent = 2; break;
}
var x = Math.round((THIS.hsv[0]/6) * (jscolor.images.pad[0]-1));
var y = Math.round((1-THIS.hsv[yComponent]) * (jscolor.images.pad[1]-1));
jscolor.picker.padM.style.backgroundPosition =
(THIS.pickerFace+THIS.pickerInset+x - Math.floor(jscolor.images.cross[0]/2)) + 'px ' +
(THIS.pickerFace+THIS.pickerInset+y - Math.floor(jscolor.images.cross[1]/2)) + 'px';
// redraw the slider image
var seg = jscolor.picker.sld.childNodes;
switch(modeID) {
case 0:
var rgb = HSV_RGB(THIS.hsv[0], THIS.hsv[1], 1);
for(var i=0; i<seg.length; i+=1) {
seg[i].style.backgroundColor = 'rgb('+
(rgb[0]*(1-i/seg.length)*100)+'%,'+
(rgb[1]*(1-i/seg.length)*100)+'%,'+
(rgb[2]*(1-i/seg.length)*100)+'%)';
}
break;
case 1:
var rgb, s, c = [ THIS.hsv[2], 0, 0 ];
var i = Math.floor(THIS.hsv[0]);
var f = i%2 ? THIS.hsv[0]-i : 1-(THIS.hsv[0]-i);
switch(i) {
case 6:
case 0: rgb=[0,1,2]; break;
case 1: rgb=[1,0,2]; break;
case 2: rgb=[2,0,1]; break;
case 3: rgb=[2,1,0]; break;
case 4: rgb=[1,2,0]; break;
case 5: rgb=[0,2,1]; break;
}
for(var i=0; i<seg.length; i+=1) {
s = 1 - 1/(seg.length-1)*i;
c[1] = c[0] * (1 - s*f);
c[2] = c[0] * (1 - s);
seg[i].style.backgroundColor = 'rgb('+
(c[rgb[0]]*100)+'%,'+
(c[rgb[1]]*100)+'%,'+
(c[rgb[2]]*100)+'%)';
}
break;
}
}
function redrawSld() {
// redraw the slider pointer
switch(modeID) {
case 0: var yComponent = 2; break;
case 1: var yComponent = 1; break;
}
var y = Math.round((1-THIS.hsv[yComponent]) * (jscolor.images.sld[1]-1));
jscolor.picker.sldM.style.backgroundPosition =
'0 ' + (THIS.pickerFace+THIS.pickerInset+y - Math.floor(jscolor.images.arrow[1]/2)) + 'px';
}
function isPickerOwner() {
return jscolor.picker && jscolor.picker.owner === THIS;
}
function blurTarget() {
if(valueElement === target) {
THIS.importColor();
}
if(THIS.pickerOnfocus) {
THIS.hidePicker();
}
}
function blurValue() {
if(valueElement !== target) {
THIS.importColor();
}
}
function setPad(e) {
var mpos = jscolor.getRelMousePos(e);
var x = mpos.x - THIS.pickerFace - THIS.pickerInset;
var y = mpos.y - THIS.pickerFace - THIS.pickerInset;
switch(modeID) {
case 0: THIS.fromHSV(x*(6/(jscolor.images.pad[0]-1)), 1 - y/(jscolor.images.pad[1]-1), null, leaveSld); break;
case 1: THIS.fromHSV(x*(6/(jscolor.images.pad[0]-1)), null, 1 - y/(jscolor.images.pad[1]-1), leaveSld); break;
}
}
function setSld(e) {
var mpos = jscolor.getRelMousePos(e);
var y = mpos.y - THIS.pickerFace - THIS.pickerInset;
switch(modeID) {
case 0: THIS.fromHSV(null, null, 1 - y/(jscolor.images.sld[1]-1), leavePad); break;
case 1: THIS.fromHSV(null, 1 - y/(jscolor.images.sld[1]-1), null, leavePad); break;
}
}
function dispatchImmediateChange() {
if (THIS.onImmediateChange) {
var callback;
if (typeof THIS.onImmediateChange === 'string') {
callback = new Function (THIS.onImmediateChange);
} else {
callback = THIS.onImmediateChange;
}
callback.call(THIS);
}
}
var THIS = this;
var modeID = this.pickerMode.toLowerCase()==='hvs' ? 1 : 0;
var abortBlur = false;
var
valueElement = jscolor.fetchElement(this.valueElement),
styleElement = jscolor.fetchElement(this.styleElement);
var
holdPad = false,
holdSld = false,
touchOffset = {};
var
leaveValue = 1<<0,
leaveStyle = 1<<1,
leavePad = 1<<2,
leaveSld = 1<<3;
jscolor.isColorAttrSupported = false;
var el = document.createElement('input');
if(el.setAttribute) {
el.setAttribute('type', 'color');
if(el.type.toLowerCase() == 'color') {
jscolor.isColorAttrSupported = true;
}
}
// target
jscolor.addEvent(target, 'focus', function() {
if(THIS.pickerOnfocus) { THIS.showPicker(); }
});
jscolor.addEvent(target, 'blur', function() {
if(!abortBlur) {
window.setTimeout(function(){ abortBlur || blurTarget(); abortBlur=false; }, 0);
} else {
abortBlur = false;
}
});
// valueElement
if(valueElement) {
var updateField = function() {
THIS.fromString(valueElement.value, leaveValue);
dispatchImmediateChange();
};
jscolor.addEvent(valueElement, 'keyup', updateField);
jscolor.addEvent(valueElement, 'input', updateField);
jscolor.addEvent(valueElement, 'blur', blurValue);
valueElement.setAttribute('autocomplete', 'off');
}
// styleElement
if(styleElement) {
styleElement.jscStyle = {
backgroundImage : styleElement.style.backgroundImage,
backgroundColor : styleElement.style.backgroundColor,
color : styleElement.style.color
};
}
// require images
switch(modeID) {
case 0: jscolor.requireImage('hs.png'); break;
case 1: jscolor.requireImage('hv.png'); break;
}
jscolor.requireImage('cross.gif');
jscolor.requireImage('arrow.gif');
this.importColor();
}
};
jscolor.install();
请看看我的jquery。并非所有人都在这里，stackoverflow不允许我插入所有内容
1 个答案:
答案 0 :(得分：0)
这不是正式的（我认为没有正式的方式），但它正在发挥作用。
document.querySelector('button').onmouseenter = function() {
document.querySelector('input')._jscLinkedInstance.show();
}<script src="http://jscolor.com/release/2.0/jscolor-2.0.4/jscolor.js"></script>
Color: <input class="jscolor" value="ab2567" tabindex="-1" />
<button>Open</button>
_jscLinkedInstance对象存储插件的数据，包含属性和函数。
注意：此演示适用于mouseenter事件（对于标题中请求的鼠标悬停：Mouse Over an image..）如果您要触发click事件您的问题（I want to display the color picker after clicking the image）中的图片（代码段中的按钮）只需将onmouseenter替换为onclick。
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