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Moo Crop JS in dot net page keeps breaking

Posted on 2009-04-04
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Last Modified: 2012-06-21
Im trying to us MooCrop (http://www.nwhite.net/MooCrop/ ) and cant get the script to run in my aspx page.  Can some show me what Im doing wrong. I get not response when I run the code or it breaks. Pasted code below.

Thanks!

I have the Moo Crop JS files in the same directory as this aspx page.
mootools.js
MooCrop.js


<%@ Page Language="C#" AutoEventWireup="true" CodeFile="placeOrder.aspx.cs" Inherits="site_PlaceOrder" %>
 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Crop Image Page</title>
    
 <script type="text/javascript" src="mootools-1.2.1-core-yc.js"></script>
 <script type="text/javascript" src="MooCrop.js">
             
     window.addEvent('load',function(){
       var crop new MooCrop('crop_example1'); 
        });   
 
 </script>
 
</head>
<body>
    <form id="form1" runat="server">
    <div>
    
        Image For Cropping.<br />
        
        <img src="crop_example1.jpg" id="crop_example1"/>
        
     </div>
    </form>
</body>
</html>

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Question by:bmanmike39
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Expert Comment

by:Pantalaim0n
ID: 24068841
I'm not sure, but I think you can't put inline JavaScript within a <script> tag that also has a src attribute.

Maybe try:

<script type="text/javascript" src="mootools-1.2.1-core-yc.js"></script>
<script type="text/javascript" src="MooCrop.js"></script>
<script type="text/javascript">
    window.addEvent('load',function(){
       var crop new MooCrop('crop_example1'); 
    });   
</script>

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Author Comment

by:bmanmike39
ID: 24068909
Tried and i get a runtime error.
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Expert Comment

by:Pantalaim0n
ID: 24068919
Can you give some details on the runtime error you got?
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Expert Comment

by:Pantalaim0n
ID: 24068932
Ah, just noticed your call to the MooCrop function is faulty. Forgot the = sign:

var crop = new MooCrop('crop_example1'); 

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Author Comment

by:bmanmike39
ID: 24068935
a runtime error occurred  do you wish to debug  line 13  error: Expected";"

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Author Comment

by:bmanmike39
ID: 24068961
I added the "=" now it gives the error "Microsoft JScript runtime error: Object doesn't support this property or method"

this is line 32 of MooCrop.JS

Line is highlighted "if ( this.img.getTag() != )  return fasle
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Author Comment

by:bmanmike39
ID: 24068974
This is the mooCrop.js file
/***
 * MooCrop (v. rc-1 - 2007-10-24 )
 *
 * @version			rc-1
 * @license			BSD-style license
 * @author			nwhite - < nw [at] nwhite.net >
 * @infos			http://www.nwhite.net/MooCrop/
 * @copyright		Author
 * 
 
 */
var MooCrop = new Class({
 
	calculateHandles : true,
	current : {},
 
	options : {
		maskColor : 'black',
		maskOpacity : '.4',
		handleColor : 'blue',
		handleWidth : '8px',
		handleHeight : '8px',
		cropBorder : '1px dashed blue',
		min : { 'width' : 50, 'height' : 50 },
		showMask : true, // false to remove, helps on slow machines
		showHandles : false // hide handles on drag
	},
 
	initialize: function(el, options){
		this.setOptions(options);
		this.img = $(el);
		if ( this.img.getTag() != 'img') return false;
		
		this.resizeFunc = this.refresh.bindWithEvent(this);
		this.removeFunc = this.removeListener.bind(this);
 
		this.buildOverlay();
		this.setup();
	},
 
	setup: function(){
		
		$(this.cropArea).setStyles({
			'width': this.options.min.width, 
			'height': this.options.min.height,
			'top' : (this.img.height - this.options.min.height)/2,
			'left': (this.img.width - this.options.min.width) / 2 
		});
		
		this.current.crop = this.crop = this.getCropArea();
		
		this.handleWidthOffset = this.options.handleWidth.toInt() / 2;
		this.handleHeightOffset = this.options.handleHeight.toInt() /2;
		
		this.fixBoxModel();
		this.drawMasks();
		this.positionHandles();
	},
 
	getCropArea : function(){
		var crop = this.cropArea.getCoordinates();
		crop.left -= this.offsets.x; crop.right -= this.offsets.x; // calculate relative (horizontal)
		crop.top -= this.offsets.y; crop.bottom  -= this.offsets.y; // calculate relative (vertical)
		return crop;
	},
 
	fixBoxModel : function(){
		var diff = this.boxDiff = (this.crop.width - this.options.min.width)/2;
 
		var b = this.bounds = { 'top' : diff, 'left' : diff, 
			'right' : this.img.width+(diff*2), 'bottom' : this.img.height+(diff*2),
			'width' : this.options.min.width+(diff*2), 'height' : this.options.min.height+(diff*2) };
		
		this.wrapper.setStyles({
			'width' : b.right, 'height' : b.bottom,
			'background' : 'url('+this.img.src+') no-repeat '+diff+'px '+diff+'px'
		});
		this.north.setStyle('width',b.right);
		this.south.setStyle('width',b.right);
	},
 
	activate : function(event,handle){
		event.stop();
		this.current = { 'x' : event.page.x, 'y' : event.page.y, 'handle' : handle, 'crop' : this.current.crop };
		if(this.current.handle == 'NESW' && !this.options.showHandles) this.hideHandles();
		this.fireEvent('onBegin',[this.img.src,this.getCropInfo(),this.bounds,handle]);
		document.addListener('mousemove', this.resizeFunc);
		document.addListener('mouseup', this.removeFunc);
	},
 
	removeListener : function(){
		if( this.current.handle == 'NESW' && !this.options.showHandles) this.showHandles();
		document.removeListener('mousemove', this.resizeFunc);
		document.removeListener('mouseup', this.removeFunc);
		this.crop = this.current.crop;
		this.fireEvent('onComplete',[this.img.src,this.getCropInfo(),this.bounds,this.current.handle]);
	},
 
	refresh : function(event){
		var xdiff = this.current.x - event.page.x;
		var ydiff = this.current.y - event.page.y;
 
		var b = this.bounds;  var c = this.crop;  var handle = this.current.handle; var styles = {}; //saving bytes
		var dragging = (handle.length > 2) ? true : false;
		
		if( handle.contains("S") ){//SOUTH
			if(c.bottom - ydiff > b.bottom ) ydiff = c.bottom - b.bottom; // box south
			if(!dragging){
				if( (c.height - ydiff) < b.height ) ydiff = c.height - b.height; // size south
				styles['height'] = c.height - ydiff; // South handles only
			}
		}
		if( handle.contains("N") ){//NORTH
			if(c.top - ydiff < b.top ) ydiff = c.top; //box north
			if(!dragging){
				if( (c.height + ydiff ) < b.height ) ydiff = b.height - c.height; // size north
				styles['height'] = c.height + ydiff; // North handles only
			}
			styles['top'] = c.top - ydiff; // both Drag and N handles
		}
		if( handle.contains("E") ){//EAST
			if(c.right - xdiff > b.right) xdiff = c.right - b.right; //box east
			if(!dragging){
				if( (c.width - xdiff) < b.width ) xdiff = c.width - b.width; // size east
				styles['width'] = c.width - xdiff;
			}
		}
		if( handle.contains("W") ){//WEST
			if(c.left - xdiff < b.left) xdiff = c.left; //box west
			if(!dragging){
				if( (c.width + xdiff) < b.width ) xdiff = b.width - c.width; //size west
				styles['width'] = c.width + xdiff;
			}
			styles['left'] = c.left - xdiff; // both Drag and W handles
		}
		var preCssStyles = $merge(styles);
		if( $defined(styles.width)) styles.width -= this.boxDiff*2;
		if( $defined(styles.height)) styles.height -= this.boxDiff*2;
 
		this.cropArea.setStyles(styles);
		this.getCurrentCoords(preCssStyles);
		this.drawMasks();
		this.positionHandles();
		this.fireEvent('onCrop',[this.img.src,this.getCropInfo(),b,handle]);
	},
 
	getCurrentCoords : function(changed){
		var current = $merge(this.crop);
		
		if($defined(changed.left)){
			current.left = changed.left;
			if($defined(changed.width)) current.width = changed.width;
			else current.right = current.left + current.width;
		}
		if($defined(changed.top)){
			current.top = changed.top;
			if($defined(changed.height)) current.height = changed.height;
			else current.bottom = current.top + current.height;
		}
		if($defined(changed.width) && !$defined(changed.left)){
			current.width = changed.width; current.right = current.left + current.width;
		}
		if($defined(changed.height) && !$defined(changed.top)){
			current.height = changed.height; current.bottom = current.top + current.height;
		}
		this.current.crop = current;
	},
 
	drawMasks : function(){
		if(!this.options.showMask) return;
		var b = this.bounds;  var c = this.current.crop; var handle = this.current.handle;
		this.north.setStyle('height', c.top + 'px' );
		this.south.setStyle('height', b.bottom  - c.bottom  + 'px');
		this.east.setStyles({ height: c.height + 'px', width: b.right  - c.right + 'px',  top: c.top  + 'px', left: c.right + 'px'});
		this.west.setStyles({ height: c.height + 'px', width: c.left + 'px', top: c.top + 'px'});
	},
 
	positionHandles: function(){
		if(!this.calculateHandles) return;
		var c = this.current.crop; var wOffset = this.handleWidthOffset; var hOffset = this.handleHeightOffset;
 
		this.handles.get('N').setStyles({'left' : c.width / 2 - wOffset + 'px', 'top' : - hOffset + 'px'});
		this.handles.get('NE').setStyles({'left' : c.width - wOffset + 'px', 'top' : - hOffset + 'px'});
		this.handles.get('E').setStyles({ 'left' : c.width - wOffset + 'px', 'top' : c.height / 2 - hOffset + 'px'});
		this.handles.get('SE').setStyles({'left' : c.width - wOffset + 'px', 'top' : c.height - hOffset + 'px'});
		this.handles.get('S').setStyles({'left' : c.width / 2 - wOffset + 'px', 'top' : c.height - hOffset + 'px'});
		this.handles.get('SW').setStyles({'left' : - wOffset + 'px', 'top' : c.height - hOffset + 'px'});
		this.handles.get('W').setStyles({'left' : - wOffset + 'px', 'top' : c.height / 2 - hOffset + 'px'});
		this.handles.get('NW').setStyles({'left' : - wOffset + 'px', 'top' : - hOffset + 'px'});
	},
 
	hideHandles: function(){
		this.calculateHandles = false;
		this.handles.each(function(handle){
			handle.setStyle('display','none');
		});
	},
 
	showHandles: function(){
		this.calculateHandles = true;
		this.positionHandles();
		this.handles.each(function(handle){
			handle.setStyle('display','block');
		});
	},
 
	buildOverlay: function(){
		var o = this.options;
 
		this.wrapper = new Element("div", {
			'styles' : {'position' : 'relative', 'width' : this.img.width, 'height' : this.img.height, 'background' : 'url('+this.img.src+') no-repeat' , 'float' : this.img.getStyle('float')  }
		}).injectBefore(this.img);
 
		this.img.setStyle('display','none');
 
		this.offsets = { x : this.wrapper.getLeft(), y : this.wrapper.getTop() };
 
		if(this.options.showMask){		// optional masks
			var maskStyles = { 'position' : 'absolute', 'overflow' : 'hidden', 'background-color' : o.maskColor, 'opacity' : o.maskOpacity};
			this.north = new Element("div", {'styles' : maskStyles}).injectInside(this.wrapper);
			this.south = new Element("div", {'styles' : $merge(maskStyles,{'bottom':'0px'})}).injectInside(this.wrapper);
			this.east =  new Element("div", {'styles' : maskStyles}).injectInside(this.wrapper);
			this.west =  new Element("div", {'styles' : maskStyles}).injectInside(this.wrapper);
		}
 
		this.cropArea = new Element("div", { 'styles' : { 'position' : 'absolute', 'top' : '0px', 'left' : '0px', 'border' : o.cropBorder, 'cursor' : 'move' },
		'events' : {
			'dblclick' : function(){ this.fireEvent('onDblClk',[this.img.src,this.getCropInfo(),this.bounds])}.bind(this),
			'mousedown' : this.activate.bindWithEvent(this,'NESW')}
		}).injectInside(this.wrapper);
 
		this.handles = new Hash();
		['N','NE','E','SE','S','SW','W','NW'].each(function(handle){
			this.handles.set(handle, new Element("div", {
			'styles' : { 'position' : 'absolute', 'background-color' : o.handleColor, 
						 'width' : o.handleWidth, 'height' : o.handleHeight, 'overflow' : 'hidden', 'cursor' : (handle.toLowerCase()+'-resize')},
			'events' : {'mousedown' : this.activate.bindWithEvent(this,handle)}
			}).injectInside(this.cropArea));
		},this);
 
	},
 
	getCropInfo : function(){
		var c = $merge(this.current.crop);
		c.width -= this.boxDiff*2; c.height -= this.boxDiff*2;
		return c;
	},
 
	removeOverlay: function(){
		this.wrapper.remove();
		this.img.setStyle('display','block');
	}
 
});
MooCrop.implement(new Events, new Options);

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Expert Comment

by:Pantalaim0n
ID: 24068996
Hmm, never heard of a method named getTag(), could be a mootools element extension...
you could try changing this.img.getTag() to this.img.tagName.toLowerCase()
All it does is checking if it's an image tag or not..
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Author Comment

by:bmanmike39
ID: 24069041
That helped a some, but now when i try to resize the box by pulling on the handles, it breaks

MS runtime error:' Page.x' is null or not an object

Line 100 of MooCrop.js
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Accepted Solution

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Pantalaim0n earned 500 total points
ID: 24069399
Starting to wonder if your mootools framework is complete and/or up to date
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