(function(win){
var doc = win.document,db = doc.body;
var Mousewheel = 'onmousewheel' in document ? 'mousewheel' : 'DOMMouseScroll';
var skyScroll = function(opts){ return new skyScroll.prototype.init(opts);};
skyScroll.prototype = {
constructor:skyScroll,
//初期化
init:function( opts){
var set = _extend({
target:'contentbox',
dir:'top',
width:500
高さ:300、
コールバック:関数(){}
},opts||{});
var _this = this,mousemoveHandle,mousedownHandle
this.target = _$(set.target); .parent = this.target.parentNode;
this.width = set.width;
this.dir = set.dir;
this.addWarpper(set.dir);
switch(set.dir){
case 'top':
this.addVscroll();
休憩。
case 'left':
this.addLscroll();
休憩。
デフォルト :
this.addVscroll();
this.addLscroll();
};
_addEvent(doc,'mousedown',function(e){
var e = e || window.event,target = e.target || e.srcElement,pos= _getMousePos(e);
if(target == _this.vScroll || target == _this.lScroll){
pos.tTop = parseInt(_this.target.style.top)
pos.tLeft = parseInt(_this.target.style); .left);
pos.sTop = parseInt(target.style.top);
pos.sLeft = parseInt(target.style.left); veHandle = _mousemoveHandle.call(_this,pos,target) );
_addEvent(doc,'mousemove',mousemoveHandle);
_addEvent(doc,'mouseup',function(){_removeEvent(doc,'mousemove',mousemoveHandle)}); 🎜> }; 🎜> if(target == _this.vScrollOuter || target == _this.lScrollOuter){
_mounsedownHandle.call(_this,pos,target) }; 🎜> });
},
//さらに、コンテンツの変更時、出力される相対的な調整に使用される、移動条の高さまたは高さ、および移動範囲を再計算する方法を提供します
recalculated:function(){
var H = this.target.offsetHeight,W = this.target.offsetWidth,T = parseInt(this.target.style.top),L = parseInt(this.target.style.left),h,w;
this.ratio = {l:this.width / W,v:this.height / H};
this.range = {l:W-this.width, t:H - this.height};
if(this.vScroll){
h = Math.round(Math.pow(this.height,2) / H);
this.vScroll.style.height = h 'px';
this.vScroll.style.top = Math.round(this.height * (-T/H)) 'px';
this.range.st = this.height - h;
this.wrapper.style.height = this.height 'px';
};
if(this.lScroll){
w = Math.round(Math.pow(this.width,2) / W)
this.lScroll.style.width = w 'px';
this.lScroll.style.left = Math.round(this.width * (-L/W)) 'px';
this.range.sl = this.width - w;
this.wrapper.style.width = this.width 'px';
};
},
//对外提供设置滚动条的位置的方法
set:function(pos){
if(!_isObject(pos)) throw new Error('参数类型错误,参数必须是object!');
if(pos.top && !isNaN(parseInt(pos.top)) && this.vScroll){
var top = Math.min(pos.top,this.range.t);
this.target.style.top = -top + 'px';
this.vScroll.style.top = Math.round(this.height * (top / this.target.offsetHeight)) + 'px';
};
if(pos.left && !isNaN(parseInt(pos.left)) && this.lScroll){
var left = Math.min(pos.left,this.range.l);
this.target.style.left = -left + 'px';
this.lScroll.style.left = Math.round(this.width * (left / this.target.offsetWidth)) + 'px';
};
},
addWarpper:function(dir){
if(this.wrapper) return;
var _this = this,W = this.target.offsetWidth,H = this.target.offsetHeight,mousewheelHandle;
this.wrapper = _createEl('
',this.parent);
this.wrapper.appendChild(this.target);
this.target.style.cssText = 'position:absolute;top:0;left:0';
switch(dir){
case 'top':
this.wrapper.style.height = this.height + 'px';
this.wrapper.style.width = W + 'px';
break;
case 'left':
this.wrapper.style.height = H + 'px';
this.wrapper.style.width = this.width + 'px';
break;
default :
this.wrapper.style.width = this.width + 'px';
this.wrapper.style.height = this.height + 'px';
};
_addEvent(this.wrapper,'mouseenter',function(e){
var pos = {};
pos.tTop = parseInt(_this.target.style.top);
pos.tLeft = parseInt(_this.target.style.left);
if(_this.vScroll) pos.sTop = parseInt(_this.vScroll.style.top);
if(_this.lScroll) pos.sLeft = parseInt(_this.lScroll.style.left);
mousewheelHandle = _mousewheelHandle.call(_this,pos);
_addEvent(_this.wrapper,'mousewheel',mousewheelHandle);
_addEvent(_this.wrapper,'mouseleave',function(){_removeEvent(_this.wrapper,'mousewheel',mousewheelHandle)});
});
},
//对外提供添加竖向滚动条的方法
addVscroll:function(){
if(this.vScroll) return;
!this.wrapper && this.addWarpper('top');
this.vScrollOuter = _createEl('
',this.wrapper)
this.vScroll = _createEl('
',this.wrapper);
this.recalculated();
},
//对外提供添加横向滚动条的方法
addLscroll:function(){
if(this.lScroll) return;
!this.wrapper && this.addWarpper('left');
this.lScrollOuter = _createEl('
',this.wrapper)
this.lScroll = _createEl('
',this.wrapper);
this.recalculated();
},
//删除竖向滚動条
delVscroll:function(){
_deleteScroll.call(this,1,this.vScroll,this.vScrollOuter,this.lScroll,this.lScroll)アウター);
},
//删除横向滚動条
delLscroll:function(){
_deleteScroll.call(this,0,this.lScroll,this.lScrollOuter,this.vScroll,this.vScロール外側) ;
}
};
skyScroll.prototype.init.prototype = skyScroll.prototype;
window.skyScroll = skyScroll;
/***************************プライベート機能*********************** **/
function _mousemoveHandle(pos,target){
var _this = this;
return target == this.vScroll ? function(e){
e = e ||ウィンドウ.イベント;
var newPos = _getMousePos(e);
_this.target.style.top = Math.min(0,Math.max(pos.tTop (pos.y - newPos.y)/_this.ratio.v,-_this.range.t)) 'px ';
target.style.top = Math.max(0,Math.min(pos.sTop - pos.y newPos.y,_this.range.st)) 'px';
_this.callback.call(_this);
_cancelSelect()
}:function(e){
e = e ||ウィンドウ.イベント;
var newPos = _getMousePos(e);
_this.target.style.left = Math.min(0,Math.max(pos.tLeft (pos.x - newPos.x)/_this.ratio.l,-_this.range.l)) 'px ';
target.style.left = Math.max(0,Math.min(pos.sLeft - pos.x newPos.x,_this.range.sl)) 'px';
_this.callback.call(_this);
_cancelSelect();
}
};
function _mousewheelHandle(pos){
var _this = this;
return this.vScroll ? function(e){
e = e ||ウィンドウ.イベント;
_stopEvent(e);
var data = e.wheelDelta ? e.wheelDelta /120 : -e.detail/3;
var top = parseInt(_this.target.style.top);
var sTop = parseInt(_this.vScroll.style.top);
var dist = データ * 5;
_this.target.style.top = Math.min(0,Math.max(top dist / _this.ratio.v, -_this.range.t)) 'px';
_this.vScroll.style.top = Math.max(0,Math.min(sTop-dist,_this.range.st)) 'px';
_this.callback.call(_this);
}:function(e){
e = e ||ウィンドウ.イベント;
_stopEvent(e);
var data = e.wheelDelta ? e.wheelDelta /120 : -e.detail/3;
var left = parseInt(_this.target.style.left);
var sLeft = parseInt(_this.lScroll.style.left);
var dist = データ * 5;
_this.target.style.left = Math.min(0,Math.max(left dist / _this.ratio.l, -_this.range.l)) 'px';
_this.lScroll.style.left = Math.max(0,Math.min(sLeft-dist,_this.range.sl)) 'px';
_this.callback.call(_this);
}
};
function _mounsedownHandle(pos,target){
var _this = this;
var elPos = _getElementPosition(target);
if(target == this.vScrollOuter){
console.log(pos.y - elPos.y);
_this.set({
top:pos.y - elPos.y
});
}else{
_this.set({
left:pos.x - elPos.x
});
};
};
function _deleteScroll(n,s1,s11,s2,s22){
var o = n ? '高さ' : '幅' 、s = n ? '上' : '左';
if(!s1) return;
this.wrapper.removeChild(s1);
this.wrapper.removeChild(s11);
ん? (this.vScroll = null) : (this.lScroll = null);
if(!s2){
this.wrapper.parentNode.appendChild(this.target);
this.wrapper.parentNode.removeChild(this.wrapper);
this.target.style.cssText = '';
this.wrapper = null;
}else{
this.wrapper.style[o.toLowerCase()] = this.target['offset' o] 'px';
this.recalculated();
};
this.target.style[s] = '0px';
//this.target.style[o.toLowerCase()]= 'auto';
};
/***************************ツールの機能********************** **/
function _$(id){
return typeof id === 'string' ? doc.getElementById(id) : id;
};
function _extend(target,source){
for(source の var key) target[key] = source[key];
ターゲットを返します。
};
function _createEl(html,parent){
var div = doc.createElement('div');
div.innerHTML = html;
el = div.firstChild;
親 &&parent.appendChild(el);
return el;
};
function _getMousePos(e){
if(e.pageX || e.pageY) return {x:e.pageX,y:e.pageY};
return {
x:e.clientX document.documentElement.scrollLeft - document.body.clientLeft,
y:e.clientY document.documentElement.scrollTop - document.body.clientTop
};
};
function _isObject(o){
return o === Object(o);
};
function _getElByClass(node,oClass,parent){
var re = [],els,parent = 親 ||ドクター;
els =parent.getElementsByTagName(node);
for(var i=0,len=els.length;i
if((' ' els[i].className ' ').indexOf(' ' oClass ' ') > ; -1) re.push(els[i]);
};
戻ります;
};
function _stopEvent(e){
e.stopPropagation ? e.stopPropagation() : (e.cancelBubble = true);
e.preventDefault ? e.preventDefault() :(e.returnValue = false);
};
function _addEvent(el,type,fn){
if(typeof el.addEventListener != '未定義'){
if(type == 'mouseenter'){
el.addEventListener('マウスオーバー',_findElement(fn),false);
}else if(type === 'mouseleave'){
el.addEventListener('mouseout',_findElement(fn),false);
}else{
el.addEventListener(type,fn,false);
}
}else if(typeof el.attachEvent != '未定義'){
el.attachEvent('on' type,fn);
}else{
el['on' type] = fn;
}
};
function _removeEvent(el,type,fn){
if(typeof el.removeEventListener != 'unknown'){
el.removeEventListener(type,fn,false);
}else if(typeof el.detachEvent != '未定義'){
el.detachEvent('on' type,fn);
}else{
el['on' type] = null;
}
};
function _findElement(fn){
return function(e){
varparent = e.popularTarget;
while(parent &&parent != this)parent =parent.parentNode;
if(parent != this) fn.call(this,e);
}
};
function _cancelSelect(){
if (window.getSelection) {
if (window.getSelection().empty) { // Chrome
window.getSelection().empty();
} else if (window.getSelection().removeAllRanges) { // Firefox
window.getSelection().removeAllRanges();
}
}else if (document.selection) { // IE?
document.selection.empty();
}
};
function _getElementPosition(el){
var x = 0,y=0;
if(el.getBoundingClientRect){
var pos = el.getBoundingClientRect();
var d_root = document.documentElement,db = document.body;
x = pos.left Math.max(d_root.scrollLeft,db.scrollLeft) - d_root.clientLeft;
y = pos.top Math.max(d_root.scrollTop,db.scrollTop) - d_root.clientTop;
}else{
while(el != db){
x = el.offsetLeft;
y = el.offsetTop;
el = el.offsetParent;
};
};
return {
x:x,
y:y
};
};
})(ウィンドウ);