67 lines
2.9 KiB
Plaintext
67 lines
2.9 KiB
Plaintext
<style type="text/css">
|
|
#preview{width:360px;height:360px;border:1px solid #000;overflow:hidden;}
|
|
#imghead {filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=image);}
|
|
</style>
|
|
<script type="text/javascript">
|
|
function previewImage(file)
|
|
{
|
|
var MAXWIDTH = 360;
|
|
var MAXHEIGHT = 360;
|
|
var div = document.getElementById('preview');
|
|
if (file.files && file.files[0])
|
|
{
|
|
div.innerHTML = '<img id=imghead>';
|
|
var img = document.getElementById('imghead');
|
|
img.onload = function(){
|
|
var rect = clacImgZoomParam(MAXWIDTH, MAXHEIGHT, img.offsetWidth, img.offsetHeight);
|
|
img.width = rect.width;
|
|
img.height = rect.height;
|
|
img.style.marginLeft = rect.left+'px';
|
|
img.style.marginTop = rect.top+'px';
|
|
}
|
|
var reader = new FileReader();
|
|
reader.onload = function(evt){img.src = evt.target.result;}
|
|
reader.readAsDataURL(file.files[0]);
|
|
}
|
|
else
|
|
{
|
|
var sFilter='filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale,src="';
|
|
file.select();
|
|
var src = document.selection.createRange().text;
|
|
div.innerHTML = '<img id=imghead>';
|
|
var img = document.getElementById('imghead');
|
|
img.filters.item('DXImageTransform.Microsoft.AlphaImageLoader').src = src;
|
|
var rect = clacImgZoomParam(MAXWIDTH, MAXHEIGHT, img.offsetWidth, img.offsetHeight);
|
|
status =('rect:'+rect.top+','+rect.left+','+rect.width+','+rect.height);
|
|
div.innerHTML = "<div id=divhead style='width:"+rect.width+"px;height:"+rect.height+"px;margin-top:"+rect.top+"px;margin-left:"+rect.left+"px;"+sFilter+src+"\"'></div>";
|
|
}
|
|
}
|
|
function clacImgZoomParam( maxWidth, maxHeight, width, height ){
|
|
var param = {top:0, left:0, width:width, height:height};
|
|
if( width>maxWidth || height>maxHeight )
|
|
{
|
|
rateWidth = width / maxWidth;
|
|
rateHeight = height / maxHeight;
|
|
|
|
if( rateWidth > rateHeight )
|
|
{
|
|
param.width = maxWidth;
|
|
param.height = Math.round(height / rateWidth);
|
|
}else
|
|
{
|
|
param.width = Math.round(width / rateHeight);
|
|
param.height = maxHeight;
|
|
}
|
|
}
|
|
|
|
param.left = Math.round((maxWidth - param.width) / 2);
|
|
param.top = Math.round((maxHeight - param.height) / 2);
|
|
return param;
|
|
}
|
|
</script>
|
|
<div id="preview">
|
|
<img id="imghead" width=100 height=100 border=0 src="file:///C:/Users/whimlex/Downloads/1.jpg">
|
|
</div>
|
|
<br/>
|
|
<input type="file" onchange="previewImage(this)" />
|