When I debug my code nothing appears on screen. I've rechecked the code and consulted with others yet nothing appears. My html template is fine.
package {
import flash.display.Sprite;
import flash.events.*;
public class asgnv2 extends Sprite
{
var lineY = 0;
public function asgnv2()
{
stage.addEventListener(Event.ENTER_FRAME, update);
graphics.lineStyle(1);
}
function update(e){
graphics.clear();
graphics.moveTo(0 ,lineY);
graphics.lineTo(100, lineY);
lineY+=0.5;
}
}
}
unless asgnv2 is Document class, it is not going to work, as you are registering ENTER_FRAME event on the stage inside the constructor of asgnv2. A DisplayObject can not access stage property until it is added to Stage Display List. So try the following. public function asgnv2(){
this.addEventListener(Event.ADDED_TO_STAGE, onAdded);
graphics.lineStyle(1);
}
private function onAdded(e:Event):void {
stage.addEventListener(Event.ENTER_FRAME, update);
this.removeEventListener(Event.ADDED_TO_STAGE, onAdded);
}
private function update(e:Event):void{
//do the stuff
}
Related
im a newbie in flex. Im have a question :)
I have
[Bindable]
private var model:AlgorithmModel = new AlgorithmModel();
private var serviceProxy:Algorithm = new Algorithm( model );
In MXML
private function Show():void
{
// now model.Solve_SendResult = null
while(i<model.Solve_SendResult.length) //
{
Draw(); //draw cube
}
}
private function Solve_Click():void
{
//request is a array
Request[0] = 2;
Request[1] = 2;
Request[2] = 3;
serviceProxy.Solve_Send(request);
Show();
}
<s:Button x="386" y="477" label="Solve" click="Solve_Click();"/>
And when i call serviceProxy.Solve_Send(request); with request is array and i want use model.Solve_SendResult in my code flex to draw many cubes use papervison3d but in the first time i received model.Solve_SendResult = null . But when I click again then everything OK.
Anyone help me? Thanks?
The model.Solve_SendResult object contains a result of the executed serviceProxy.Solve_Send(request) method. The Solve_Send will be executed asynchronously and as a result, at the moment when you fire the show method the Solve_SendResult object may be still null.
As a solution, you can use the following:
Create a custom event
package foo
{
import flash.events.Event;
public class DrawEvent extends Event
{
public static const DATA_CHANGED:String = "dataChanged";
public function DrawEvent(type:String, bubbles:Boolean=false, cancelable:Boolean=false)
{
super(type, bubbles, cancelable);
}
}
}
In your Algorithm class define the following:
[Event(name=DrawEvent.DATA_CHANGED, type="foo.DrawEvent")]
public class Algorithm extends EventDispatcher{
//your code
In the Solve_SendHandler method of the Algorithm class add the following
public virtual function Solve_SendHandler(event:ResultEvent):void
{
dispatchEvent(new DrawEvent(DrawEvent.DATA_CHANGED));
//your code
}
In your MXML class create onLoad method and add an event listener to an instance of the Algorithm class as it shown below:
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" initialize="onLoad()">
public function onLoad():void
{
serviceProxy.addEventListener(DrawEvent.DATA_CHANGED, onDataChanged);
}
private function onDataChanged(event:DrawEvent):void{
while(i<model.Solve_SendResult.length) //
{
Draw(); //draw cube
}
}
make the following changes in the Solve_Click() method:
private function Solve_Click():void
{
//request is a array
Request[0] = 2;
Request[1] = 2;
Request[2] = 3;
serviceProxy.Solve_Send(request);
}
That is it! So, basically the code above do the following: you added a listener to your service (algorithm class), and the listener is listening for the DrawEvent.DATA_CHANGED event. The DrawEvent.DATA_CHANGED will be dispatched when your client receive a result of the Solve_Send invocation. Thus, the onDataChanged will draw your cube or do whatever you want :)
The approach above is basic and you have to know how events work in flex and how you can deal with it. Additional information is available here:
http://livedocs.adobe.com/flex/3/html/help.html?content=createevents_3.html
http://livedocs.adobe.com/flex/3/html/help.html?content=events_07.html
Regards,
Cyril
when i use the following tree renderer class the the informtions in the tree gets chopped. Is there any solution to fix this bug. please help me.
The PLTree class is as follows:
import flash.events.Event;
import mx.events.ScrollEvent;
import mx.controls.Tree;
import mx.core.ScrollPolicy;
import mx.core.mx_internal;
import mx.events.TreeEvent;
public class PLTree extends Tree
{
private var _lastWidth:Number = 0;
private var _lastHeight:Number = 0;
public function PLTree() {
super();
horizontalScrollPolicy = ScrollPolicy.AUTO;
}
override public function get maxHorizontalScrollPosition():Number
{
return mx_internal::_maxHorizontalScrollPosition;
}
override public function set maxHorizontalScrollPosition(value:Number):void
{
mx_internal::_maxHorizontalScrollPosition = value;
dispatchEvent(new Event("maxHorizontalScrollPositionChanged"));
scrollAreaChanged = true;
invalidateDisplayList();
}
override protected function updateDisplayList(unscaledWidth:Number, unscaledHeight:Number):void
{
var diffWidth:Number = measureWidthOfItems(0,0) - (unscaledWidth - viewMetrics.left - viewMetrics.right);
if (diffWidth <= 0) {
maxHorizontalScrollPosition = 0;
horizontalScrollPolicy = ScrollPolicy.OFF;
} else {
maxHorizontalScrollPosition = diffWidth;
horizontalScrollPolicy = ScrollPolicy.ON;
}
super.updateDisplayList(unscaledWidth, unscaledHeight);
}
override protected function scrollHandler(event:Event):void
{
if (mx_internal::isOpening)
return;
// TextField.scroll bubbles so you might see it here
if (event is ScrollEvent){
super.scrollHandler(event);
invalidateDisplayList();
}
}
}
i am attaching the image file of how it looks when executed.
When surfing using google i found a suggesion to fix this bug is it the right way ?
(
Issue: Text getting chopped of at end.
Fix: change
maxHorizontalScrollPosition = diffWidth;
to
maxHorizontalScrollPosition = diffWidth + 10;
or what ever correction factor you need.
)
Kindly help me .Thanks a lot in advance.
Looking at your picture, I'd suspect the issue has nothing to do with the specific tree, and is only slightly related to the renderer. Instead, I think that when the container holding the Tree is created, it doesn't have a size, and when the Tree sizes its renderers, it gives them the wrong size. Since List-based controls don't set the actual width on renderers, choosing to set explicitWidth instead, the renderers aren't triggered into changing their size.
Check out http://www.developria.com/2009/12/handling-delayed-instantiation-1.html for more explicit details and fixes.
similar to the scroll handler in the above mentioned program. Use a mouse wheel scroll handler to handle that event as follows:
override protected function mouseWheelHandler(eventMouse:MouseEvent):void
{ if (mx_internal::isOpening)
return;
if (eventMouse is MouseEvent){
super.mouseWheelHandler(eventMouse);
invalidateDisplayList();
}
}
This is the code that i compiled using mxmlc the free flex sdk. It compiled and i ran it. Helloworld not displayed
package
{
import org.flixel.*;
public class PlayState extends FlxState
{
override public function create():void
{
add(new FlxText(0,0,100,"Hello, World!")); //adds a 100x20 text field at position 0,0 (upper left)
}
}
}
Expected output is = HelloWorld. But is not displayed
You'll need to provide an FlxGame subclass too. It may be easiest for you to take an existing Flixel project that works out of the box such as AdamAtomic's HelloWorld and modify it to suit your needs.
Try this instead:
package
{
import org.flixel.*;
public class HelloWorld extends FlxState
{
private var title_text:FlxText;
public function HelloWorld() { }
override public function create():void
{
title_text = new FlxText(20, 0, 300, 'Lunarium');
title_text.setFormat(null, 50, 0xffffffff, "center");
add(title_text);
}
override public function update():void
{
if(FlxG.keys.X)
{
FlxG.fade(0xff131c1b, 1, onFade);
}
super.update();
}
protected function onFade():void
{
//FlxG.switchState(new SmallPlay2());
}
}
}
There are plenty of tool tips to help you figure out what the different settings mean. I found flixel rather easy to use coming from a Multimedia Fusion 2 background.
Enjoy!
Is there any workaround to create submenu in a flex context menu other than stopping right click from javascript.
Regards,
Hi Frank,
Yes, I want to create submenus in a context menu. Can you help me here.
Regards,
Hi Frank,
I need the context menu for the application not for datagrid.
In my initial question the phrase "other than stopping right click from javascript" means
"catch the right click in html, call a javascript function and over js call a as function."
The project that you have specified does the above procedure. I don't want to use this
procedure. Is there any other way for achieving submenus in a flex context menu. Could you
please tell me if so..
Regards,
Arvind
Yes, there is.
I don't know, what you exactly mean with this:
other than stopping right click from
javascript.
But, if you want to create a entry in submenu, do this:
//Instance of my own class
private var myContext:myContextMenu = new myContextMenu();
application.contextMenu = myContext.myContextMenu;
//Here is the Class:
package com.my.components
{
/* ////////////////////////////////////////////
///// My Context Menü /////////////////////
///////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////
//to use: //
// private var myContext:MyContextMenu = new MyContextMenu(); //
// init() in creationComplete //
// application.contextMenu = myContext.myContextMenu; //
////////////////////////////////////////////////////////////////////////////// */
import flash.display.Sprite;
import flash.events.ContextMenuEvent;
import flash.net.URLRequest;
import flash.net.navigateToURL;
import flash.text.TextField;
import flash.ui.ContextMenu;
import flash.ui.ContextMenuBuiltInItems;
import flash.ui.ContextMenuItem;
public class MyContextMenu extends Sprite
{
public var myContextMenu:ContextMenu;
private var menuLabel:String = String.fromCharCode(169)+" My Company GmbH";
public function MyContextMenu()
{
myContextMenu = new ContextMenu;
removeDefaultItems();
addCustomItems();
myContextMenu.addEventListener(ContextMenuEvent.MENU_SELECT, menuSelectHandler);
super();
}
private function removeDefaultItems():void
{
myContextMenu.hideBuiltInItems();
var defaultItems:ContextMenuBuiltInItems = myContextMenu.builtInItems;
defaultItems.print = true;
}
private function addCustomItems():void
{
var item:ContextMenuItem = new ContextMenuItem(menuLabel);
myContextMenu.customItems.push(item);
item.addEventListener(ContextMenuEvent.MENU_ITEM_SELECT,menuItemSelectHandler);
}
private function menuSelectHandler(event:ContextMenuEvent):void
{
}
private function menuItemSelectHandler(event:ContextMenuEvent):void
{
navigateToURL(new URLRequest('http://www.my-company.de'));
}
private function createLabel():TextField
{
var txtField:TextField = new TextField();
//txtField.text = textLabel;
txtField.text = "RightClickHere";
return txtField;
}
}
}
Have fun
EDIT:
There is an interesting project here. They catch the right click in html, call a javascript function and over js call a as function.
Unfortunately, the limitation of FP or NativeMenu APi allowed just on level contextmenu. Read here
Frank
I'm trying to set the height of a vertical bar (activityBar) but it does not appear to do anything. i have tried something similar with the whole component, but setting the dimensions does nothing (even in the mxml used to instantiate the class). Indeed, I've added transparent graphics just to give the component some dimensions
I'm not sure what I'm doing wrong. It's something bad though; my approach seems dire.
FYI: I'm trying to create a mic activity bar that will respond to the mic by simply setting the height of the activityBar child (which seems to me to be more efficient than redrawing the graphics each time).
Thanks for your help!
package components {
import mx.core.UIComponent;
public class MicActivityBar extends UIComponent {
public var activityBar:UIComponent;
// Constructor
public function MicActivityBar() {
super();
this.opaqueBackground = 0xcc4444;
graphics.beginFill(0xcccccc, 0);
graphics.drawRect(0,-15,5,30);
graphics.endFill();// background for bar
activityBar = new UIComponent();
activityBar.graphics.beginFill(0xcccccc, 0.8);
activityBar.graphics.drawRect(0,-15,5,20);
activityBar.graphics.endFill();
activityBar.height=10;
addChild(activityBar);
}
}
}
package components {
import mx.core.UIComponent;
public class MicActivityBar extends UIComponent {
public var activityBar:UIComponent;
private var _w:Number;
// Constructor
public function MicActivityBar() {
super();
this.opaqueBackground = 0xcc4444;
graphics.beginFill(0xcccccc, 0);
graphics.drawRect(0,-15,5,30);
graphics.endFill();// background for bar
activityBar = new UIComponent();
activityBar.graphics.beginFill(0xcccccc, 0.8);
activityBar.graphics.drawRect(0,-15,5,20);
activityBar.graphics.endFill();
activityBar.height=10;
addChild(activityBar);
}
public function get w():Number {
return _w;
}
public function set w(value:Number):void {
_w = value;
}
override protected function updateDisplayList(unscaledWidth:Number,unscaledHeight:Number):void {
super.updateDisplayList(unscaledWidth, unscaledHeight);
this.height=w;
this.weight=w;
}
}
}
See my updated code above.