Blackboard

Click and drag to draw a line.
Double click to change the color.
Hit the spacebar to clear the blackboard.

by joeRob2468 08 Sep 2011

Tags

black click code color double doubleclick draw graphics interesting mouse pure space spacebar
Embed

/**
 * Copyright joeRob2468 ( http://wonderfl.net/user/joeRob2468 )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/7aZs
 */

package {
    import flash.events.KeyboardEvent;
    import flash.ui.Keyboard;
    import flash.display.Graphics;
    import flash.events.MouseEvent;
    import flash.display.Sprite;
    
    [SWF(backgroundColor=0x000000, frameRate=60)]
    
    public class FlashTest extends Sprite {
        
        private var g:Graphics;
        private var color:uint = 0xFFFFFF;
        private var brushSize:Number = 2;
        private var maxBrushSize:Number = 10;
        
        private var drawing:Boolean = false;
        
        public function FlashTest() {
            init();            
        }
        
        private function init():void
        {
            g = this.graphics;
            stage.doubleClickEnabled = true;
            
            stage.addEventListener(MouseEvent.MOUSE_DOWN,startDraw);
            stage.addEventListener(MouseEvent.MOUSE_UP,stopDraw);
            stage.addEventListener(MouseEvent.DOUBLE_CLICK,changeColor);
            stage.addEventListener(KeyboardEvent.KEY_UP,clear);
        }
        
        private function startDraw(e:MouseEvent):void
        {
            drawing = true;
            g.moveTo(mouseX,mouseY);
            stage.addEventListener(MouseEvent.MOUSE_MOVE,draw);
        }
        
        private function draw(e:MouseEvent):void
        {
            if(drawing)
            {
                g.lineStyle(brushSize/2,color);
                g.lineTo(mouseX,mouseY);
            }

        }

        
        private function stopDraw(e:MouseEvent):void
        {
            drawing = false;
            stage.removeEventListener(MouseEvent.MOUSE_MOVE,draw);
        }
        
        
        private function changeColor(e:MouseEvent):void
        {
            color = Math.random()*0xFFFFFF;
            //brushSize = Math.random()*maxBrushSize;
        }
        
        
        private function clear(e:KeyboardEvent):void
        {
            switch(e.keyCode)
            {
                case Keyboard.SPACE:
                    g.clear();
                    break;
            }

        }




    }
}