wbo1/client-data/tools/hand/hand.js

/**
 *                        WHITEBOPHIR
 *********************************************************
 * @licstart  The following is the entire license notice for the 
 *  JavaScript code in this page.
 *
 * Copyright (C) 2013  Ophir LOJKINE
 *
 *
 * The JavaScript code in this page is free software: you can
 * redistribute it and/or modify it under the terms of the GNU
 * General Public License (GNU GPL) as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option)
 * any later version.  The code is distributed WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU GPL for more details.
 *
 * As additional permission under GNU GPL version 3 section 7, you
 * may distribute non-source (e.g., minimized or compacted) forms of
 * that code without the copy of the GNU GPL normally required by
 * section 4, provided you include this license notice and a URL
 * through which recipients can access the Corresponding Source.
 *
 * @licend
 */
 
(function(){ //Code isolation

	var orig = {x:0,y:0};
	var pressed = false;
	function press(x,y,evt, isTouchEvent) {
		if (!isTouchEvent) {
			pressed=true;
			orig.x=scrollX+evt.clientX;
			orig.y=scrollY+evt.clientY;
		}
	}
	function move(x,y,evt, isTouchEvent) {
		if (pressed && !isTouchEvent) { //Let the browser handle touch to scroll
			window.scrollTo(orig.x-evt.clientX, orig.y-evt.clientY);
		}
	}
	function release() {
		pressed=false;
	}

	Tools.add({ //The new tool
	 	"name" : "Hand",
	 	"listeners" : {
	 		"press" : press,
	 		"move" : move,
	 		"release" : release
	 	},
	 	"mouseCursor" : "move"
	});

})(); //End of code isolation