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Create custom shape in Flex

Posted on 2007-11-27
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5,651 Views
Last Modified: 2008-07-21
Hi Experts,

I want to create a custom shape, like different US states maps image in flex. How would I do this ? I have tried ImageMap from Flexlib. It is not what I wanted. I need some action script class which can create custom shape/polygon and result it as bitmap so that I can display that in flex.

Thanks
CK
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Question by:chinu1310
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9 Comments
 
LVL 19

Expert Comment

by:Gary Benade
ID: 20366348
http://livedocs.adobe.com/flex/201/langref/flash/display/Graphics.html
package {

    import flash.display.DisplayObject;

    import flash.display.Graphics;

    import flash.display.Shape;

    import flash.display.Sprite;
 

    public class GraphicsExample extends Sprite {

        private var size:uint         = 80;

        private var bgColor:uint      = 0xFFCC00;

        private var borderColor:uint  = 0x666666;

        private var borderSize:uint   = 0;

        private var cornerRadius:uint = 9;

        private var gutter:uint       = 5;
 

        public function GraphicsExample() {

            doDrawCircle();

            doDrawRoundRect();

            doDrawRect();

            refreshLayout();

        }
 

        private function refreshLayout():void {

            var ln:uint = numChildren;

            var child:DisplayObject;

            var lastChild:DisplayObject = getChildAt(0);

            lastChild.x = gutter;

            lastChild.y = gutter;

            for (var i:uint = 1; i < ln; i++) {

                child = getChildAt(i);

                child.x = gutter + lastChild.x + lastChild.width;

                child.y = gutter;

                lastChild = child;

            }

        }
 

        private function doDrawCircle():void {

            var child:Shape = new Shape();

            var halfSize:uint = Math.round(size / 2);

            child.graphics.beginFill(bgColor);

            child.graphics.lineStyle(borderSize, borderColor);

            child.graphics.drawCircle(halfSize, halfSize, halfSize);

            child.graphics.endFill();

            addChild(child);

        }
 

        private function doDrawRoundRect():void {

            var child:Shape = new Shape();

            child.graphics.beginFill(bgColor);

            child.graphics.lineStyle(borderSize, borderColor);

            child.graphics.drawRoundRect(0, 0, size, size, cornerRadius);

            child.graphics.endFill();

            addChild(child);

        }
 

        private function doDrawRect():void {

            var child:Shape = new Shape();

            child.graphics.beginFill(bgColor);

            child.graphics.lineStyle(borderSize, borderColor);

            child.graphics.drawRect(0, 0, size, size);

            child.graphics.endFill();

            addChild(child);

        }

    }

}

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Author Comment

by:chinu1310
ID: 20367422
Hi,

Thanks for that link. Actually I visited that link before. The only question I have is how do I create polygons using this class. I need to create different state's map images using flex. This only does rectangle,roundrect. Thats not what I am looking for.

Thanks
CK
0
 
LVL 19

Expert Comment

by:Gary Benade
ID: 20371549
graphics.beginFill(0xFF0000,0.5);
graphics.moveTo(10,10);
graphics.lineTo(100,50);
graphics.lineTo(100,150);
graphics.lineTo(70,70);
graphics.lineTo(10,10);
graphics.endFill();
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LVL 19

Expert Comment

by:Gary Benade
ID: 20439804
Need any more help on this?
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LVL 14

Author Comment

by:chinu1310
ID: 20452108
Yeah man. Thanks for checking back . The ting I want is i want to create a custom polygon and add and event to that shape and display on the flex application. I did some research how cna i convert the vector grphics to display object but no success.

Can you do something like this for me ?

Thanks for checking back.
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LVL 19

Accepted Solution

by:
Gary Benade earned 500 total points
ID: 20455546

// save as mypolygon.as in a directory called mypolygon

package mypolygon

{

	import flash.display.Sprite;

	import flash.events.MouseEvent;

	import flash.events.Event;

	

	public class mypolygon extends Sprite

	{

		public function mypolygon()

		{

			super();

			draw();

			addEventListener( MouseEvent.CLICK, click);

		}

		private function click( e:MouseEvent):void

		{

			dispatchEvent( new Event('polyClick',true));

		}

		public function draw():void

		{

			this.graphics.beginFill(0xFF0000,0.5);

			this.graphics.moveTo(10,10);

			this.graphics.lineTo(100,50);

			this.graphics.lineTo(100,150);

			this.graphics.lineTo(70,70);

			this.graphics.lineTo(10,10);

			this.graphics.endFill();		

		}

	}

}
 

<?xml version="1.0" encoding="utf-8"?>

<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" creationComplete="init()">

	<mx:Script>

		<![CDATA[

			import mypolygon.mypolygon;

			private function init():void

			{			

				addEventListener('polyClick', polyClicked);

				var poly:mypolygon = new mypolygon();

				poly.name = "poly1";

				poly.x = 100;

				poly.y = 100;

				poly.width = 150;

				poly.height = 150;

				rawChildren.addChild( poly);							

				poly = new mypolygon();

				poly.name = "poly2";

				poly.x = 10;

				poly.y = 10;

				poly.width = 150;

				poly.height = 150;

				rawChildren.addChild( poly); 

			}

			private function polyClicked( e:Event):void

			{

				trace( 'poly ' + e.target.name + ' clicked');

			}

		]]>

	</mx:Script>

</mx:Application>

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Expert Comment

by:Gary Benade
ID: 20455555
if you want hollow shapes change the code to:
		public function draw():void

		{

			//this.graphics.beginFill(0xFF0000,0.5);

			this.graphics.lineStyle(10);

			this.graphics.moveTo(10,10);

			this.graphics.lineTo(100,50);

			this.graphics.lineTo(100,150);

			this.graphics.lineTo(70,70);

			this.graphics.lineTo(10,10);

			//this.graphics.endFill();		

		}

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LVL 19

Expert Comment

by:Gary Benade
ID: 20498375
Was that what you were looking for?
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LVL 19

Expert Comment

by:Gary Benade
ID: 21568885
Need any more help on this?
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