Dynamic image test
/**
* A little manager that allows us to swap the image dynamically
*
*/
var CropImageManager = {
/**
* Holds the current Cropper.Img object
* @var obj
*/
curCrop: null,
/**
* Initialises the cropImageManager
*
* @access public
* @return void
*/
init: function() {
this.attachCropper();
},
/**
* Handles the changing of the select to change the image, the option value
* is a pipe seperated list of imgSrc|width|height
*
* @access public
* @param obj event
* @return void
*/
onChange: function( e ) {
var vals = $F( Event.element( e ) ).split('|');
this.setImage( vals[0], vals[1], vals[2] );
},
/**
* Sets the image within the element & attaches/resets the image cropper
*
* @access private
* @param string Source path of new image
* @param int Width of new image in pixels
* @param int Height of new image in pixels
* @return void
*/
setImage: function( imgSrc, w, h ) {
$( 'testImage' ).src = imgSrc;
$( 'testImage' ).width = w;
$( 'testImage' ).height = h;
this.attachCropper();
},
/**
* Attaches/resets the image cropper
*
* @access private
* @return void
*/
attachCropper: function() {
if( this.curCrop == null ) this.curCrop = new Cropper.Img( 'testImage', { onEndCrop: onEndCrop } );
else this.curCrop.reset();
},
/**
* Removes the cropper
*
* @access public
* @return void
*/
removeCropper: function() {
if( this.curCrop != null ) {
this.curCrop.remove();
}
},
/**
* Resets the cropper, either re-setting or re-applying
*
* @access public
* @return void
*/
resetCropper: function() {
this.attachCropper();
}
};
// setup the callback function
function onEndCrop( coords, dimensions ) {
$( 'x1' ).value = coords.x1;
$( 'y1' ).value = coords.y1;
$( 'x2' ).value = coords.x2;
$( 'y2' ).value = coords.y2;
$( 'width' ).value = dimensions.width;
$( 'height' ).value = dimensions.height;
}
// basic example
Event.observe(
window,
'load',
function() {
CropImageManager.init();
Event.observe( $('removeCropper'), 'click', CropImageManager.removeCropper.bindAsEventListener( CropImageManager ), false );
Event.observe( $('resetCropper'), 'click', CropImageManager.resetCropper.bindAsEventListener( CropImageManager ), false );
Event.observe( $('imageChoice'), 'change', CropImageManager.onChange.bindAsEventListener( CropImageManager ), false );
}
);
/*
if( typeof(dump) != 'function' ) {
Debug.init(true, '/');
function dump( msg ) {
Debug.raise( msg );
};
} else dump( '---------------------------------------\n' );
*/
label {
clear: left;
margin-left: 50px;
float: left;
width: 5em;
}
html, body {
margin: 0;
}
#testWrap {
margin: 20px 0 0 50px; /* Just while testing, to make sure we return the correct positions for the image & not the window */
}
Dynamic image test
Test of dynamically changing images or removing & re-applying the cropper