<< Chapter < Page Chapter >> Page >

I will break this program down and explain it in fragments. Aside from the MXML file shown in Listing 14, the program consists of a single class named Driver . A complete listing of the Driver class file is provided in Listing 16 near the end of the lesson.

Beginning of the class named Driver

The Driver class begins in Listing 4. Note that this class extends the Panel class, causing this program to have the same overall appearance as the program provided in the documentation .

Beginning of driver class for effects03.

package CustomClasses{ import flash.events.MouseEvent;import mx.containers.ControlBar; import mx.containers.Panel;import mx.controls.Button; import mx.controls.Image;import mx.controls.TextArea; import mx.effects.Resize;import mx.events.EffectEvent; import mx.events.FlexEvent;public class Driver extends Panel{ //Instantiate and save references to all of the// objects required by the program. private var resize:Resize = new Resize();private var textOut:TextArea = new TextArea(); private var image:Image = new Image();private var bar:ControlBar = new ControlBar(); private var startButton:Button = new Button();private var pauseButton:Button = new Button(); private var resumeButton:Button = new Button();private var reverseButton:Button = new Button(); private var endButton:Button = new Button();private var resetButton:Button = new Button();

In addition to containing all of the required import directives, the code in Listing 4 instantiates and saves references to all of the objects required bythe program.

Beginning of the constructor for Effects03

The constructor begins in Listing 5.

Beginning of the constructor for effects03.

public function Driver(){//constructor this.title="Demonstration of the Resize effect.";this.percentWidth = 100; this.percentHeight = 100;this.addEventListener(FlexEvent.CREATION_COMPLETE,creationCompleteHandler);

The code in Listing 5 sets several properties on the Panel object, which is the object with the light gray background shown in Figure 4. The Panel object is displayed in the browser window, which has a slightly darker gray background color in Figure 4.

Register an event listener

The last statement in Listing 5 registers an event listener named creationCompleteHandler to service creationComplete events dispatched by the Panel object.

As you will see later, the event handler causes the text "Creation Complete!" to be displayed in a TextArea object near the top of the Panel in Figure 4 when the Panel object and all of its children have been constructed, initialized, and drawn.

Prepare the TextArea object and add it to the Panel

Listing 6 sets some properties and some styles on the TextArea object and adds it near the top of the Panel as shown in Figure 4.

Prepare the textarea object and add it to the panel.

textOut.percentWidth = 100;//percent textOut.height = 100;//pixelstextOut.setStyle("color","0x0000FF"); textOut.setStyle("fontSize",14);textOut.text = "Use the Buttons to control " + "the size of the image.";addChild(textOut);

Questions & Answers

Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
for teaching engĺish at school how nano technology help us
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket Reply
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply

Get the best Algebra and trigonometry course in your pocket!

Source:  OpenStax, Object-oriented programming (oop) with actionscript. OpenStax CNX. Jun 04, 2010 Download for free at http://cnx.org/content/col11202/1.19
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Object-oriented programming (oop) with actionscript' conversation and receive update notifications?