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package com.senocular.display {
import flash.display.Graphics;
import flash.utils.flash_proxy;
import flash.utils.Proxy;
/**
* a graphics property substitute for DisplayObject instances
* that can be duplicated
*/
public class GraphicsCopy extends Proxy {
private var _graphics:Graphics;
private var history:Array = new Array();
/**
* graphics instance to recieve
* drawing commands given to this GraphicsCopy instance
*/
public function get graphics():Graphics {
return _graphics;
}
public function set graphics(g:Graphics):void {
_graphics = g;
// apply the graphics history to Graphics instance
copy(this);
}
/**
* constructor
* @param graphics Optional Graphics instance to recieve
* drawing commands given to this GraphicsCopy instance
*/
public function GraphicsCopy(graphics:Graphics = null) {
_graphics = graphics;
}
/**
* copies the graphics of a GraphicsCopy into this GraphicsCopy
*/
public function copy(graphicsCopy:GraphicsCopy):void {
var hist:Array = graphicsCopy.history;
history = hist.slice();
if (_graphics) {
var i:int;
var n:int = hist.length;
_graphics.clear();
for (i=0; i<n; i += 2) {
_graphics[hist[i]].apply(_graphics, hist[i + 1]);
}
}
}
// PROXY overrides
override flash_proxy function callProperty(methodName:*, ... args):* {
methodName = String(methodName);
switch(methodName) {
case "clear":
history.length = 0;
break;
default:
history.push(methodName, args);
}
if (_graphics && methodName in _graphics) {
return _graphics[methodName].apply(_graphics, args);
}
}
}
}
