AS3 :: Flex : Determining When A Displayable Object Is Finally Displayed?
Apr 7, 2011
I am looking to determine the final event or location where it could be determined that an Image, or a UIComponent, has been rendered to the user. I need to know when it has been displayed and thus is, presuming it's not covered up or at a silly location, visible to the user. In the UpdateComplete Event Documentation it says:
This is the last opportunity to alter the component before it is displayed. All properties have been committed and the component has been measured and layed out.Overriding the dispatchEvent on an Image shows that the UpdateComplete Event is the last one that it dispatches after an update of the .source property. Breakpointing and walking the code after that event shows that the LayoutManager seems to finish with it's actions before the Image is displayed.
I have watched the dispatchEvent on and updateDisplayList on the canvas container and no dice. I assume that there is some higher (lower) object that I might be able to extend or listen to that would give me that final piece of information.
NoisyImageTest.mxml - test application for watching the event loop. If you breakpoint at line 22 you see the last updateComplete event but the image is not yet displayed. Stepping through the code from there, it exits the thread after the LayoutManager but still has not updated the screen. I assume that there is a point where the systemManager or stage or some other item could say it drew the image.
When I use Bitmap.draw() to copy a displayObject do I lose the transparency? In one case I might be copying a .png file that had transparency and in another case I'm copying a composite image made up of multiple DisplayObjects. It seems as though the resulting images are bitmaps with no transparency.
Is it possible to duplicate .png files in memory, preserving the transparency and having unique objects for using in different places in the display?
I'm current building a game in as3; the proplem I have right now is when I roll the virtual dice, the player(marker) moves accross the board but what I need to know is: is there a way to find the instance name of the object(box) that the player lands on?
I'm trying to solve what seems to be pretty basic task. However, I was unable to find a solution. how can I determine if the mouse is already over a certain object? The this.addEventListener(MouseEvent.MOUSE_OVER, onOver); doesn't work because it will fire only what the mouse moves over from not being over. I'm trying to be able to tell if the mouse is over even without moving mouse, something like "this.isMouseOver()". Is it possible with some generic command without comparing the coordinates of the mouse and the object?
is it possible to determining what object calls a function based on an event listener? for example, i have 2 buttons on stage that call the same function when they are clicked. i'd like the function to determine which button was the sender.
I have a basic linkbar using a viewstack. For every entry into the viewstack an reference shows up on the linkbar. How do I remove the reference on the linkbar but still have access to the viewstack item?
How does that work? How come when I use "addChild(l);" (l being my Loader object), the SWF has already played to it's first stop point?How do I prevent that? It actually throws an error because of it.
Is there any way to get width/height of a loaded movie, excluding any area that is not displayed? My problem is that I am loading swfs to use as icons in a menu and am unable to get the desired width & height in order to calculate dynamic spacing based on how large the icons are. Most of the swfs where published with a document size of say 50 pixels x 50 pixels but some vary in dimensions. When I access the width or height property of the swf, I get a value that includes objects in the swf that fall out of bounds of the size set in the fla. Basically I get values that include areas that are effectively masked. So my 50x50 icon (that displays just fine), gets me a width of 63x86 or something like that. My sloppy workaround that I would like to replace was that I republished all of them with a extra property that I can read when I load them instead of using the width and height.
How do you access every displayed object of a certain kind at once? Here's the code.
[Code]...
I want to replace the underlined part so that it refers to every instance of the dirt symbol without an insane number of iterations. From that, I plan to make the player capable of standing on each dirt symbol as they are being created, as well as move all of the dirt symbols with ease.
i'm about to develop a flash AS3 site with heavy usage of the mouse's scroll wheel.last year i had to use the Pixelbreaker add-on (URL...) in order to accomplish something that should be supported by any sane operating system + browser.so, flash-forward a year later.. can Macs FINALLY use scroll wheels in flash like every other modern OS in the world? or do i need to use this add-on still?
i have a datagrid which contains a number of itemrenderers, it is populated each time a user does a search. Is there an event which can tell me when the datagrid has completed rendering all new rows and item renderers?
I need to trigger an event once everything has been created so that i can resize then container which holds the grid.
Currently im using DataGridEvent.HEADER_RELEASE and CollectionEvent.COLLECTION_CHANGE events to manage this however the problem with these events is that they get called as each new row is being added to the datagrid.
I have a large Flex project with two Applications in it. A lot of code is shared between these Applications. However, the smaller of the Applications does not require much of the code that the larger one does. I'm trying to ensure that code that isn't required by the smaller application isn't getting compiled into it.
I have a custom class that extends the Tree component so I can add some logic to the drag and drop functionality and not allow folders to be dropped inside folders.In the dragOver function, I am using:
var currNodeOver:TreeItemRenderer = TreeItemRenderer(indexToItemRenderer(calculateDropIndex(event))); to determine the drop target, and setting:
I have an application where I'm trying to update the String for a Label's text property, based on the tab which user has the mouse over. I've constructed a simple example displaying how I would process the eventHandler function if I was going to use the selectedIndex property, however it's the tab that has mouse focus, which may or may not be the selectedItem, that I'd like to reference and I haven't been able to figure out a way to do it.
So here is the example: <s:Label id="descriptionLabel" /> <s:TabBar id="audioTB" dataProvider="{audioVS}" mouseOver="audioTB_mouseOverHandler(event)" rollOut="audioTB_rollOutHandler(event)" /> [Code] .....
I have a movie clip named circle_mc(see the image on the link below) and a mask object(movie clip) which determines visible area of the circle. User can change the portion which is visible (extend the red area and make it red+blue, gray area is invisible). I need to find proportion of visible area to invisible area (red+blue/gray) so that I can calculate angle.
I'm new to Flex, Flash, and ActionScript. I'm attempting to create a video player that starts another video when the previous video ends. I thought there might be an event that is thrown when the video finishes playing, but I have not been able to find it.
VideoEvent.COMPLETE is when the video is completely downloaded, not when it is completely done playing. Does such an event exist? how I could subclass SWFLoader, Image, or Video to support such an event?
my drag and drop target works...sort of. Here's the problem, when the target is dropped it should tell the user if it is correct. It does but you have ot keep drag and dropping all over the target to finally get the answer to display. I have checked the registation marks and stage alignment...nothing seems to work. it should be if you drop it over the hit (instance name) it should immediately display the answer of "correct" Here is the code for the drop target:
I have a Flex 3 app with a view in a viewstack, and that view must only be created when requested. I have declared validators for each of the controls on the view and I have created a method called checkAllValid() which runs Validator.validateAll(). This works great when I'm actually using the controls (using the change or focusOut events), but how can I get checkAllValid() to run when the view is first displayed to the user, so that they are immediately shown what is invalid once the data is populated in the controls?
I have tried putting the call in various events on the view itself (e.g. creationComplete, updateComplete, show, activate, etc.) but it always shows the following error when I start the application:
'The source attribute must be specified when the property attribute is specified.'
I have also tried setting the creationPolicy on the view to "all" but this does not help.
Some of the validators are only enabled when the form is in a certain state, but I have eliminated that as being the potential problem by commenting out all of my validators except for this most simple one:
[Code]....
I have also tried calling the single validator directly rather than using validateAll and the result is the same.
There must be a way I can force the view to validate when it is shown....
(by the way it's in the Cairngorm MVC framework and I have data bound to the controls)
I have a DataGrid in my project. It doesn't fit's the width of the form, so the scrollBar appears. The DataGrid, on it's initial state, displays a few columns and a part of the next column (which would appear after scrolling). Is there any way, I can get the width of this, displaying part?
I have data ItemRenderers with DataGroup, but I have many items, and it seems to me that DataGroup create all of them not only those few displayed on users screen, which takes time and resources.
I have a java web application. When I log in to that application and navigate to a jsp which has flex chart embeded into it, the chart displayes just fine. I am using blaze ds remoting object mechanism. But when I want to navigate to a different page, it logs me out of application since the login session is lost.
I have a custom component I've developed that's part of a dashboard.It does some polling based on a timer that's part of the component.
When the user navigates away from the view that contains this component I would like to stop the timer and hence stop the polling.I can obviously fire an event when the view's changed and catch it within the component but I was hoping that there might be a way to contain this all within the component.Is there an event or state change within a component that triggers and even when a component is currently be displayed?
So I had an interesting request from a client the other day. Basically, he wanted the button (which looks like a sticker) to peel off as the mouse approaches the button. So from the outside of the hover point, it would peel a little. As the mouse gets closer, the peel animation would peel more (or less, depending on the mouse position) until it is 'peeld' off the page and sort of hovering above the background when the mouse is finally over the button.
Does anyone know of some custom classes that might achieve this? It seems like it would be making use of the new 3D in flash10, but I haven't had much time to experiment with 3D in flash.
I am planning to create a video conferencing application finally in flash using RED5. But i don't know flash. Is there any readymade free video conference program available that i can directly integrate in my website? If not, then can anybody point me to from where should i start? Because gaining microphone and webcam access programmatically seems very daunting to me.
I have a several chart components that I have created in Flex. Basically I have set up a special UI that allows the user to select which of these charts they want to print. When they press the print button each of the selected charts is created dynamically then added to a container. Then I send this container off to FlexPrintJob.
i.e.
private function prePrint():void { var printSelection:Box = new Box();
[Code]....
I have seen some examples on the adobe site that add the container to the application but don't include it in the layout. This looks like the way to go.
