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dragSquare.html
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<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset=utf-8>
<title>可改变大小的正方形demo</title>
<style>
.edit{
position: absolute;
width: 200px;
height: 200px;
border:1px solid #000;
cursor: move;
}
.atop,.abottom,.aleft,.aright{
position: absolute;
width: 5px;
height: 5px;
border:1px solid #000;
background: #fff;
}
.atop{
left: 50%;
top: -4px;
margin-left: -2.5px;
cursor: ns-resize;
}
.abottom{
left: 50%;
bottom: -4px;
margin-left: -2.5px;
cursor: ns-resize;
}
.aleft{
top: 50%;
left: -4px;
margin-top: -2.5px;
cursor: ew-resize;
}
.aright{
top: 50%;
right: -4px;
margin-top: -2.5px;
cursor: ew-resize;
}
</style>
<script type="text/javascript" src="https://g.alicdn.com/kissy/k/1.4.8/seed-min.js"></script>
</head>
<body>
<div class="edit">
<i class="atop"></i>
<i class="abottom"></i>
<i class="aleft"></i>
<i class="aright"></i>
</div>
<script>
KISSY.use(['node','event'],function(S,Node,Event){
var $ = Node.all;
//移动方块(移动后事件需要绑定在document上，因为例子中的dom元素使用了绝对定位，不能绑定在body上，不然会出问题)
var $obj = $('.edit');
$obj.on('mousedown',function(e){
var sX = (e.pageX || e.clientX) - parseInt($obj.offset().left),
sY = (e.pageY || e.clientY) - parseInt($obj.offset().top);
$(document).on('mousemove',function(e){
$(document).on('mouseup mouseleave',function(e){
Event.detach($(document),'mouseup mouseleave mousemove');
});
var left = (e.pageX || e.clientX) - sX + 'px',
right = (e.pageY || e.clientY) -sY + 'px';
$obj.css('left',left);
$obj.css('top',right);
});
});
//更改方块大小
$right = $('.aright');
var width = parseInt($obj.css('width'));
$right.on('mousedown',function(e){
e.halt();
var lX = (e.pageX || e.clientX);
console.log('rightdown');
$(document).on('mousemove',function(e){
var right = (e.pageX || e.clientX) - lX;
lX = (e.pageX || e.clientX);
width = width + right;
$obj.css('width',width+'px');
$(document).on('mouseup',function(e){
$(document).detach('mouseup mousemove');
});
});
});
$left = $('.aleft');
var width = parseInt($obj.css('width'));
$left.on('mousedown',function(e){
e.halt();
var lX = (e.pageX || e.clientX);
var originLeft = $left.offset().left;
$(document).on('mousemove',function(e){
var left = (e.pageX || e.clientX) - lX;
lX = (e.pageX || e.clientX);
$obj.css('left', lX + 'px');
width = width - left;
$obj.css('width',width +'px');
$(document).on('mouseup',function(e){
$(document).detach('mouseup mousemove');
});
});
});
$bottom = $('.abottom');
var height = parseInt($obj.css('height'));
$bottom.on('mousedown',function(e){
e.halt();
var lY = (e.pageY || e.clientY);
console.log('bottomdown');
$(document).on('mousemove',function(e){
var bottom = (e.pageY || e.clientY) - lY;
lY = (e.pageY || e.clientY);
height = height + bottom;
$obj.css('height',height+'px');
$(document).on('mouseup',function(e){
$(document).detach('mouseup mousemove');
});
});
});
$top = $('.atop');
var height = parseInt($obj.css('height'));
$top.on('mousedown',function(e){
e.halt();
var lY = (e.pageY || e.clientY);
var origintop = $top.offset().top;
$(document).on('mousemove',function(e){
var top = (e.pageY || e.clientY) - lY;
lY = (e.pageY || e.clientY);
$obj.css('top', lY + 'px');
height = height - top;
$obj.css('height',height +'px');
$(document).on('mouseup',function(e){
$(document).detach('mouseup mousemove');
});
});
});
});
</script>
</body>
</html>