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if(!dojo._hasResource["dojox.image.Magnifier"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dojox.image.Magnifier"] = true;
dojo.provide("dojox.image.Magnifier");
dojo.require("dojox.gfx");
dojo.require("dojox.image.MagnifierLite");
dojo.declare("dojox.image.Magnifier",
[dojox.image.MagnifierLite],{
// summary: Adds magnification on a portion of an image element, using dojox.gfx
//
// description: An unobtrusive way to add an unstyled overlay
// above the srcNode image element. The overlay/glass is a
// scaled version of the src image (so larger images sized down
// are clearer).
//
// over-ride the _createGlass method to create your custom surface,
// being sure to create an img node on that surface.
_createGlass: function(){
// summary: create the glassNode, and an img on a dojox.gfx surface
// images are hard to make into workable templates, so just add outer overlay
// and skip using dijit._Templated
this.glassNode = dojo.doc.createElement('div');
this.surfaceNode = this.glassNode.appendChild(dojo.doc.createElement('div'));
dojo.addClass(this.glassNode,"glassNode");
dojo.body().appendChild(this.glassNode);
with(this.glassNode.style){
height = this.glassSize + "px";
width = this.glassSize + "px";
}
this.surface = dojox.gfx.createSurface(this.surfaceNode, this.glassSize, this.glassSize);
this.img = this.surface.createImage({
src:this.domNode.src,
width:this._zoomSize.w,
height:this._zoomSize.h
});
},
_placeGlass: function(e){
// summary: position the overlay centered under the cursor
var x = e.pageX - 2;
var y = e.pageY - 2 ;
var xMax = this.offset.x + this.offset.w + 2;
var yMax = this.offset.y + this.offset.h + 2;
// with svg, our mouseout connection to the image surface doesn't
// fire, so we'r have to manually calculate offsets
if(x<this.offset.x || y<this.offset.y || x>xMax || y>yMax){
this._hideGlass();
}else{
this.inherited(arguments);
}
},
_setImage: function(e){
// summary: set the image's offset in the clipping window relative to the mouse position
var xOff = (e.pageX - this.offset.l) / this.offset.w;
var yOff = (e.pageY - this.offset.t) / this.offset.h;
var x = (this._zoomSize.w * xOff * -1)+(this.glassSize*xOff);
var y = (this._zoomSize.h * yOff * -1)+(this.glassSize*yOff);
// set the image offset
this.img.setShape({ x: x, y:y });
}
});
}
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