Code bytes

Appcelerator Titanium: Bullet-Proof window drag

UPDATED: 2010-01-24

/*
Bullet Proof window drag

This is the most performant window dragging code
I could come up with. All the example on
developer.appcelerator.com we laggy

Version 2: More contained version
*/

var toolbarHandle = document.getElementById('toolbar');

toolbarHandle.addEventListener('mousedown', function (e){
    var isDragging = true;
    var mousePosition = {x:event.clientX, y:event.clientY};
    
    document.addEventListener('mousemove', drag, false);
    document.addEventListener('mouseup', function (e){
        document.removeEventListener('mousemove', drag, false);
        document.removeEventListener('mouseup', arguments.callee, false);
    }, false);


    function drag(event) {
        var wnd = Titanium.UI.currentWindow;
        var curentPosition = {x:wnd.getX(), y:wnd.getY()};
        
        curentPosition.x += event.clientX - mousePosition.x;
        curentPosition.y += event.clientY - mousePosition.y;
        wnd.moveTo(curentPosition.x, curentPosition.y);
    }
}, false);

You can find the code on Github