AngularJS实现的鼠标拖动画矩形框示例【可兼容IE8】
程序员文章站
2022-06-24 17:30:49
本文实例讲述了angularjs实现的鼠标拖动画矩形框。分享给大家供大家参考，具体如下：
本文实例讲述了angularjs实现的鼠标拖动画矩形框。分享给大家供大家参考，具体如下：
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>title</title>
<style>
html {color: #000;overflow-y: scoll;overflow: -moz-scrollbars-vertical}
body, h1, h2, h3, h4, h5, h6, hr, p, blockquote, dl, dt, dd, ul, ol, li, pre, form, fieldset, legend, button, input, textarea, th, td {
margin: 0;
padding: 0;
overflow: hidden;
}
#longzhoufeng {
position: relative;
left: 0;
top: 0;
margin: 0 auto;
padding: 0;
width: 800px;
min-height: 800px;
overflow: auto;
height: 1000px;
background-color: #e9e9e9;
}
.dashed-box {
position: absolute;
border: 1px dashed red;
width: 0px;
height: 0px;
left: 0px;
top: 0px;
overflow: hidden;
}
#moving_box {
border: 2px solid red;
}
.question-box {
position: absolute;
/* older safari/chrome browsers */
-webkit-opacity: 0.5;
/* netscape and older than firefox 0.9 */
-moz-opacity: 0.5;
/* safari 1.x (pre webkit!) 老式khtml内核的safari浏览器*/
-khtml-opacity: 0.5;
/* ie9 + etc...modern browsers */
opacity: .5;
/* ie 4-9 */
filter: alpha(opacity=50);
/*this works in ie 8 & 9 too*/
-ms-filter: "progid:dximagetransform.microsoft.alpha(opacity=50)";
/*ie4-ie9*/
filter: progid:dximagetransform.microsoft.alpha(opacity=50);
}
.question-border {
border: 2px dashed red;
overflow: hidden;
z-index: 1;
}
.del-box {
width: 20px;
height: 20px;
float: right;
color: #fff;
position: relative;
margin-top: 1px;
margin-right: 1px;
z-index: 99;
background-color: red;
}
.active-border {
border: 2px solid red;
-webkit-opacity: 0.5;
/* netscape and older than firefox 0.9 */
-moz-opacity: 0.5;
/* safari 1.x (pre webkit!) 老式khtml内核的safari浏览器*/
-khtml-opacity: 0.5;
/* ie9 + etc...modern browsers */
opacity: .5;
/* ie 4-9 */
filter: alpha(opacity=50);
/*this works in ie 8 & 9 too*/
-ms-filter: "progid:dximagetransform.microsoft.alpha(opacity=50)";
/*ie4-ie9*/
filter: progid:dximagetransform.microsoft.alpha(opacity=50);
}
.box-background-image {
position: absolute;
width: 1000px;
height: 1600px;
}
</style>
<script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
<script src="https://cdn.bootcss.com/angular.js/1.0.5/angular.min.js"></script>
<script>
var app = angular.module('miniapp', []);
function appcontroller($scope, $timeout) {
//阻止默认行为
function stopdefault(e) {
if(e && e.preventdefault)
e.preventdefault();
else
window.event.returnvalue = false;
return false;
}
$scope.bgimg = '1.jpg';
$scope.getboxpicsize = function() {
$scope.bgwidth = angular.element(".box-background-image").width();
$scope.bgheight = angular.element(".box-background-image").height();
}
///////////////////////////////////////
var wid = "num";
var index = 0;
var target = null;
var startx = 0, starty = 0;
var flag = false;
var startl = 0, startt = 0, boxheight = 0, boxwidth = 0;
var boxobj = document.getelementbyid("longzhoufeng");
var frame = $("#longzhoufeng");
var framebox = {
"pos": frame.offset(),
"width": frame.outerwidth(),
"height": frame.outerheight()
}
var newmarkpos = {
"left": startl,//按下时鼠标距离的左边的距离
"top": startt//按下时鼠标距离的上边的距离
}
var myevent = $scope.myevent = {
//鼠标点击
mousedown: function(e) {
flag = true;
var e = window.event || e;
target = e.target || e.srcelement; //获取document 对象的引用
//e.pagey，e.pagex兼容
if(target.src) {
stopdefault(e)
}
var scrolltop = boxobj.scrolltop;
var scrollleft = boxobj.scrollleft;
var epagex = e.clientx + scrollleft;
var epagey = e.clienty + scrolltop;
//按下时鼠标距离页面的距离
startx = epagex;
starty = epagey;
//按下时鼠标距离的左边和上边的距离
startl = startx - framebox.pos.left;
startt = starty - framebox.pos.top;
index++;
var div = document.createelement("div");
div.id = wid + index;
div.classname = "dashed-box";
boxobj.appendchild(div);
div = null;
// 如果鼠标在 box 上被按下
if(target.classname.match(/del-box/i)) {
// 允许拖动
flag = false;
// 设置当前 box 的 id 为 moving_box
var movingbox = document.getelementbyid("moving_box")
if(movingbox !== null) {
movingbox.removeattribute("id");
}
target.id = "moving_box";
// removebox(target);
} else {
var div = document.createelement("div");
div.id = wid + index;
div.classname = "dashed-box";
boxobj.appendchild(div);
div = null;
}
},
//鼠标离开
mouseup: function(e) {
var e = window.event || e;
if(boxwidth >= 1 || boxheight >= 1) {
boxobj.removechild(dragbox(wid + index));
index++;
var div = document.createelement("div");
div.classname = "question-box question-border";
div.style.left = newmarkpos.left + "px";
div.style.top = newmarkpos.top + "px";
div.style.width = boxwidth + "px";
div.style.height = boxheight + "px";
boxobj.appendchild(div);
div = null;
boxwidth = 0;
boxheight = 0;
} else {
if(flag) {
boxobj.removechild(dragbox(wid + index));
}
}
flag = false;
},
//鼠标移动
mousemove: function(e) {
var e = window.event || e;
stopdefault(e)
if(flag) {
var scrolltop = boxobj.scrolltop;
var scrollleft = boxobj.scrollleft;
var epx = e.clientx + scrollleft;
var epy = e.clienty + scrolltop;
var disw = epx - startx;
var dish = epy - starty;
var l = startl + disw;
var t = startt + dish;
if(disw > 0) {
if(l >= 0) {
boxwidth = disw
}
newmarkpos.left = startl;
} else {
if(l <= 0) {
l = 0;
boxwidth = startl;
}
boxwidth = (startl - l);
newmarkpos.left = l;
}
if(dish > 0) {
if(t >= 0) {
boxheight = dish
}
newmarkpos.top = startt;
} else {
if(t <= 0) {
t = 0;
boxheight = startt;
}
boxheight = (startt - t)
newmarkpos.top = t;
}
dragbox(wid + index).style.left = newmarkpos.left + "px";
dragbox(wid + index).style.top = newmarkpos.top + "px";
dragbox(wid + index).style.width = math.abs(boxwidth) + "px";
dragbox(wid + index).style.height = math.abs(boxheight) + "px";
if(e.srcelement.src) {
stopdefault(e)
}
}
}
}
var dragbox = function(id) {
return document.getelementbyid(id);
}
}
//等待图片加载完成
app.directive("loadimage", function() {
return {
restrict: 'a',
link: function(scope, element, attrs) {
element.bind('load', function() {
scope.$apply(attrs.loadimage);
});
}
}
})
</script>
</head>
<body>
<div ng-app="miniapp" ng-controller="appcontroller">
<div class="main">
<div id="longzhoufeng" ng-mousedown="myevent.mousedown($event)" ng-mouseup="myevent.mouseup($event)" ng-mousemove="myevent.mousemove($event)">
<img ng-src="{{bgimg}}" class="box-background-image" load-image="getboxpicsize()">
</div>
</div>
</div>
</body>
</html>
感兴趣的朋友可以使用在线html/css/javascript代码运行工具：http://tools.jb51.net/code/htmljsrun测试上述代码运行效果。