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define("dijit/Viewport", [
"dojo/Evented",
"dojo/on",
"dojo/ready",
"dojo/sniff",
"dojo/_base/window", // global
"dojo/window" // getBox()
], function(Evented, on, ready, has, win, winUtils){
// module:
// dijit/Viewport
/*=====
return {
// summary:
// Utility singleton to watch for viewport resizes, avoiding duplicate notifications
// which can lead to infinite loops.
// description:
// Usage: Viewport.on("resize", myCallback).
//
// myCallback() is called without arguments in case it's _WidgetBase.resize(),
// which would interpret the argument as the size to make the widget.
};
=====*/
var Viewport = new Evented();
ready(200, function(){
var oldBox = winUtils.getBox();
Viewport._rlh = on(win.global, "resize", function(){
var newBox = winUtils.getBox();
if(oldBox.h == newBox.h && oldBox.w == newBox.w){ return; }
oldBox = newBox;
Viewport.emit("resize");
});
// Also catch zoom changes on IE8, since they don't naturally generate resize events
if(has("ie") == 8){
var deviceXDPI = screen.deviceXDPI;
setInterval(function(){
if(screen.deviceXDPI != deviceXDPI){
deviceXDPI = screen.deviceXDPI;
Viewport.emit("resize");
}
}, 500);
}
});
return Viewport;
});
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