Creating an AS3 Game Framework - The Essential Guide to Flash Games - page 76

import flash.display.BitmapData;
import flash.display.Sprite;
import flash.text.TextFormat;
import flash.text.TextField;

/**
* ...
* @author Jeff Fulton and Steve Fulton
*/
public class SimpleBlitButton extends Sprite {
public static const OFF:int = 1;
public static const OVER:int = 2;

private var offBackGroundBD:BitmapData;
private var overBackGroundBD:BitmapData;

private var positionOffset:Number;

private var buttonBackGroundBitmap:Bitmap;
private var buttonTextBitmapData:BitmapData;
private var buttonTextBitmap:Bitmap;

public function SimpleBlitButton(x:Number,y:Number,width:

Number,height:Number,text:String, offColor:uint,

overColor:uint, textformat:TextFormat,positionOffset:Number=0) {
this.positionOffset = positionOffset;
this.x = x;
this.y = y;

//background
offBackGroundBD = new BitmapData(width, height,
false, offColor);
overBackGroundBD = new BitmapData(width, height,

false, overColor);
buttonBackGroundBitmap = new Bitmap(offBackGroundBD);

//text
var tempText:TextField = new TextField();
tempText.text = text;
tempText.setTextFormat(textformat);

buttonTextBitmapData = new BitmapData

(tempText.textWidth+positionOffset, tempText.

textHeight+positionOffset, true, 0x00000000);
buttonTextBitmapData.draw(tempText);
buttonTextBitmap = new Bitmap(buttonTextBitmapData);
buttonTextBitmap.x = ((buttonBackGroundBitmap.width -

int(tempText.textWidth))/2)-positionOffset;
buttonTextBitmap.y = ((buttonBackGroundBitmap.height -
int(tempText.textHeight))/2)-positionOffset;