jquery制作的横向图片滚动带横向滚动条
2009-10-19 00:00:00 来源:WEB开发网Javascript文件:
/// <reference path="jquery-1.3.2.js" />
/*
*
* tackerScroller - a Image Horizental Auto Scroll Viewer
* Version 0.1.1
* @requires jQuery v1.3.2
*
* Copyright (c) 2009 Tacker
* Eidtor: Tacker By 2009-10-18
* Email:tacker.cn@gmail.com
* WebSite:www.ruiidea.com
* Dual licensed under the MIT and GPL licenses:
* http://www.opensource.org/licenses/mit-license.php
* http://www.gnu.org/licenses/gpl.html
*
*/
jQuery.fn.tackerScroller = function(params) {
var p = params || {
container: "imgViewer",
frame: "viewerFrame",
width: 2,
child: "li",
time: 6000,
visibleScroll: false,
scrollwidth: 845
};
var _imgViewer = $("#" + p.container);
var _imgFrame = $("#" + p.frame);
var _width = p.width;
var _child = p.child;
var _time = p.time;
var _framewidth = _imgFrame.find(_child).size() * _imgFrame.find(_child + ":first").width();
var _positionX;
var _scrollwidth = p.scrollwidth;
var _visibleScroll = p.visibleScroll;
var _scrollPositionX;
var autoStop = function() {
_imgFrame.stop();
if (_visibleScroll === true) {
$("#scrollcenter").stop();
}
};
var turnLeft = function() {
if (_imgFrame.offset().left < 0) {
_imgFrame.animate({ marginLeft: 0 }, _time);
if (_visibleScroll === true) {
$("#scrollcenter").animate({ left: 0 }, _time);
}
}
else {
autoStop();
}
};
var turnRight = function() {
if (_imgFrame.offset().left > _imgViewer.width() - _imgFrame.width()) {
_imgFrame.animate({ marginLeft: (_imgViewer.width() - _imgFrame.width()) }, _time);
if (_visibleScroll == true) {
$("#scrollcenter").animate({ left: (_scrollwidth - $("#scrollcenter").width()) }, _time);
}
}
else {
autoStop();
}
};
var init = function() {
_imgFrame.width(_framewidth);
if (_visibleScroll == true) {
var scrollerwidth = _imgViewer.width() * _scrollwidth / _imgFrame.width();
var scrolleroffsetX;
$("#scrollcenter").width(scrollerwidth);
$("#scrollcenter").css("position", "absolute").css("left","0px");
$("#scrollcenter").parent().css("width",_scrollwidth+"px");
$("#scrollcenter").animate({ left: (_scrollwidth - scrollerwidth) / 2 }, 2000);
$("#scrollcenter").bind("mousedown",function(e) {
autoStop();
e = e ? e : window.event;
//鼠标x坐标相对中间滚动条偏移位置
scrolleroffsetX = parseInt(e.originalEvent.clientX-$("#scrollcenter").offset().left||e.originalEvent.layerX||0);
$("#msg").text(scrolleroffsetX);
$("#scrollcenter").parent().mousemove(function(evt) {
evt = evt ? evt : window.event;
_scrollPositionX=parseInt((evt.originalEvent.clientX-scrolleroffsetX-$("#scrollcenter").parent().offset().left)||(evt.originalEvent.pageX-scrolleroffsetX-$("#scrollcenter").parent().offset().left)||0)
if (_scrollPositionX >= 0 && _scrollPositionX <= _scrollwidth - $("#scrollcenter").width()) {
$("#scrollcenter").css("left", (_scrollPositionX) + "px");
_imgFrame.css("margin-left",(_imgViewer.width() - _imgFrame.width()) * _scrollPositionX / (_scrollwidth - $("#scrollcenter").width()) + "px");
}
return false;//阻止事件冒泡
});
$(document).mouseup(function() {
$("#scrollcenter").parent().unbind();
});
return false; //阻止事件冒泡
});
$("#scrollcenter").mouseover(function() {
$(this).css("cursor", "pointer");
});
}
_imgFrame.animate({ marginLeft: (_imgViewer.width() - _framewidth) / 2 }, 2000);
_imgViewer.mouseout(autoStop);
_imgViewer.mouseover(function(e) {
//获取当前鼠标相对对象的x坐标
_positionX = e.originalEvent.x - $(this).offset().left || e.originalEvent.layerX - $(this).offset().left || 0;
if (_positionX < $(this).width() / 3) {
autoStop();
turnLeft();
}
else if (_positionX > ($(this).width() * 2) / 3) {
autoStop();
turnRight();
}
else {
autoStop();
}
return false;//阻止事件冒泡
});
};
init();
};
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