fck 限制下传图片的宽度

修改 fckeditor\editor\dialog\fck_image 路径下的 fck_image.js 文件

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1、找到UpdateOriginal方法

function UpdateOriginal(resetSize ){
	
	if ( !eImgPreview )
		return ;

	if ( GetE('txtUrl').value.length == 0 ){
		oImageOriginal = null ;
		return ;
	}

	oImageOriginal = document.createElement( 'IMG' ) ;// new Image() ;

//以上为添加代码
?oImageOriginal.onload = function(){
??????? if(GetE('txtWidth').value.length==0){
????? GetE('txtWidth').value=oImageOriginal.width;
????? }
??????? if(GetE('txtWidth').value>800){
??? GetE('txtWidth').value =800;? 
??? var imgHeight=800 * oImageOriginal.height / oImageOriginal.width;
??? GetE('txtHeight').value =imgHeight;
?? }
?}

//以上为添加代码

if ( resetSize ){
		oImageOriginal.onload = function(){
			this.onload = null ;
			ResetSizes();
		}
	}

	oImageOriginal.src = eImgPreview.src ;
}

?2、找到OnSizeChanged方法

function OnSizeChanged( dimension, value )
{  
	// Verifies if the aspect ration has to be maintained
	if ( oImageOriginal && bLockRatio )
	{
		var e = dimension == 'Width' ? GetE('txtHeight') : GetE('txtWidth') ;

		if ( value.length == 0 || isNaN( value ) )
		{
			e.value = '' ;
			return ;
		}

		if ( dimension == 'Width' )
			value = value == 0 ? 0 : Math.round( oImageOriginal.height * ( value  / oImageOriginal.width ) ) ;
		else
			value = value == 0 ? 0 : Math.round( oImageOriginal.width  * ( value / oImageOriginal.height ) ) ;

		if ( !isNaN( value ) )
			e.value = value ;

              if(GetE('txtWidth').value>800){
		  var imgWidth=800;
		  var imgHeight=800 * oImageOriginal.height / oImageOriginal.width;
		  GetE('txtWidth').value =imgWidth;        	 
		  GetE('txtHeight').value =imgHeight;
	      }
	}
 	
	UpdatePreview() ;
}

?3、找到ResetSizes方法

function ResetSizes()
{
	if ( ! oImageOriginal ) return ;
	if ( oEditor.FCKBrowserInfo.IsGecko && !oImageOriginal.complete )
	{
		setTimeout( ResetSizes, 50 ) ;
		return ;
	}

	//GetE('txtWidth').value  = oImageOriginal.width ;
	//GetE('txtHeight').value = oImageOriginal.height ;
	if ( oImageOriginal.width<800) { 
		   GetE('txtWidth').value=oImageOriginal.width ; 
		   GetE('txtHeight').value=oImageOriginal.height ; 
   	     } else { 
		   GetE('txtWidth').value=800; 
		   GetE('txtHeight').value=800*oImageOriginal.height/oImageOriginal.width ; 
	   }
	UpdatePreview() ;
}

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以上红色的为添加的代码，蓝色的为删除的代码，修改后涮洗浏览器，就可以看到效果。

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