Actionscript 3 :: Force System Cursor Usage In Flex?
Sep 3, 2010
Let's say that you're using some black box library (i.e. no source code) that sets your cursor to something when rolling over a certain sprite. You can override that by catching rollOver and rollOut events, blocking propagation and using the CursorManager.
Question: is there a way to tell the CursorManager to use the system cursor?
Obviously, I could feed the CursorManager some "system like" cursor, but this would look weird if the local settings are different from that icon, which is likely to be always.
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Nov 16, 2009
my flash has lots of images and dispaly objects. Hence it costs high cpu usages. after using my flash for an hour, it is dieing.I am trying to reduce it. I have some questions here:
1. I create an array, or string at frame 1 for example, when I go back to frame 1, should I create a new array, or a new string?? Or is it better to make it empty array(eg:[]) or empty string("")? which way it reduces cup uasge more?
2. does anyone know how to force the flash to do garbage collection??
3. any other possible reasons that cause high cpu usage?
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Aug 24, 2010
I wrote an application in flash AS3, and when I trace from flash the total memory usage of the total application is only about 9MB, But at the same time Task Manager Shows the memory usage as 110MB. Around 100MB difference.Flash Trace Method System.totalMemory difference of the Trace from the Beginning of the application to end of the application.
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Nov 30, 2011
my customer wants a custom handcursor in a flash application. however, we use a lot of textfields with hrefs inside, in which case the custom cursor should not be displayed, but the normal hand pointer. any way i can find out if the cursor is above a href formatted text?
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Mar 18, 2010
I am making use of a custom cursor on itemRenderers in a List component. The custom cursor works just fine except when I mouse over the Text component which is a child of the itemRenderer at which point I get two cursors, the custom and an iBar one on top of the other.Here's the code:
<?xml version="1.0"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">
<mx:Script>
[code].....
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Sep 22, 2010
I build a web site in flex that some time take input. Will this website works on Touch Screen environment(KIOSK).My question is we have to make any change to handle input such as prompt on screen keyboard when input fields are get focused or it will manage my device and OS of system(KIOSK, Touch screen system) itself.
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Jun 21, 2010
how to change the cursor when move over a chart in flex i have tried useHandCursor="true" but it's not working in charts.....and it should show values also....
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Feb 10, 2010
How swffit (http://swffit.millermedeiros.com/) can be used? I mean in my project I have dynamically expanding flash application, so once the expanding part riches the bottom I see standard flash scroll bar. Not browser scrollbar...
Here is how I defined my application:
public function addPanel(evt:Event):void
{
var panel:Panel = new Panel();
panel.name = "new";
panel.title = "new";
panel.height = 30;
panel.width = 100;
this.addChild(panel);
SWFFit.fit('my_flash', 800, 600);
}
public function main(event:Event):void{
SWFFit.fit('my_flash', 800, 600);
}
]]>
</mx:Script>
<mx:Button label="Add" click="addPanel(event)"/>
The html file (same as described in docs):
<html>
<head>
<script type="text/javascript" src="swfobject.js"></script>
<script type="text/javascript" src="swffit.js"></script>
<script type="text/javascript">
swfobject.registerObject("my_flash", "8.0.0");
swffit.fit("my_flash",800,600);
</script>
</head>
<body>
<object id="my_flash" classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" width="100%" height="100%">
<param name="movie" value="Sample.swf" />
<!--[if !IE]>-->
<object type="application/x-shockwave-flash" data="Sample.swf" width="100%" height="100%">
<!--<![endif]-->
<div>
<a href="http://www.adobe.com/go/getflashplayer"><img src="http://www.adobe.com/images/shared/download_buttons/get_flash_player.gif" alt="Get Adobe Flash player" title="Get Adobe Flash player" /></a><br />
You need <a href="http://www.adobe.com/go/getflashplayer">Flash Player 8</a> and allow javascript to see the content of this site..
</div>
<!--[if !IE]>-->
</object>
<!--<![endif]-->
</object>
</body>
</html>
Will be happy to hear any feedback,
Added fixes described in answer 1. but come across interesting issue: e.g. browser scroll bar appears only on browser window resize, not when clicking add button...
http://img.skitch.com/20100210-qx9trerh8rq5athhnuwtidetr6.png
After add is clicked several times, I see flash default scroll bar...
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Mar 4, 2011
System.totalMemory gives the total memory used by the flash player and not one particular application. Is there any way I can get the flex application's memory usage in code/actionscript?
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Mar 5, 2010
I have an AIR application, I use SwfLoader to load another swf file to display in this app. The problem is the CPU Usage always takes over 50%, but it only takes 15% when the swf file runs in standalone mode.
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Feb 25, 2011
Is there any way i can get CPU usage and CPU memory usage details in flex? I know that flash can't access any system resources.
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Jan 11, 2010
I have a situation where I need my swf to load from a domain. Currently my flex set up always loads a SWF from file [URL]...
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Oct 1, 2009
I have been working on an Adobe Flex application for some months now, and the application is meant to run 24/7 for days (weeks!) continuously. However, I'm now seeing that after a few days of running nonstop the computer it runs on tells me that the system is low on virtual memory and gives me an error about Page File usage. Once I close the Flex app, the Page File usage goes down from 1.9 GB to 100 MB (or less). It seems that its using up all this memory and not freeing it although I have been very careful in my app to not keep huge arrays.The app does some graphing and draws a lot of shapes (to greate a 'gauge') and then gets rid of them by re-declaring that object as another 'gauge'.
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Apr 12, 2010
I've got a flex component which works pretty well but unfortunately turns into a disaster once used in a datagroup item renderer of about 40-50 items. Essentially it uses bitmapdata to take screenshot of a fully-rendered webpage in mx:HTML (this version of webkit rocks btw, miles better than flex 3). The code is pretty self-explanatory I think. [URL]. I've optimized it all I could, browsed, search for answers and already trimmed it down a lot, I'm desparate to reduce the memory usage (about 600mb after 100 draw). The Garbage collector has little effect.
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Jun 4, 2011
I have a question about the Spark DataGrid and how it works in terms of garbage collection. What I'm finding is that if I dynamically add and remove columns from the DataGrid at runtime, the GridColumns and ItemRenderers never get freed from memory.
For instance, if I have a list with 10 items and I create 10 columns, there will be 100 ItemRenderers and 10 GridColumns. If I remove all of the columns, they are still there.
[Code]...
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Aug 17, 2010
I have a flash application which consist of Grid Components, Button, Label, and Combo-box Components. All these components are used more than 70 times(simultaneously) with in the application. So Its takes too much of memory. So How can I test the memory usage of each component at the time of running. Is there any plug-in available for browsers to find the memory usage. I'm using flash CS3 and ActionScript 3.0. The application suppose to run in browsers.
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Jul 28, 2011
Is there a performance and/or memory usage difference between these two scenarios?
Scenario 1: N visual elements all added to stage;
N-1 have visible = false, 1 has visible = true;
Scenario 2: N visual elements, only 1 added to the stage at any time.
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Jan 6, 2010
I have multiple items in my app that I would like the user to click on.Some items are completely different classes.The classes dispatch events and then when the events are captured, some modifications are done to the transform properties of a loosely coupled display object.I want two separate classes to dispatch the same type of event, since I already have an image class that draws images based on a given url... I want the classes to dispatch the events, but then I think I want the difference to be detected when the event comes along... i.e., I would like to recognize the 'origin' or 'sub-type' of the event. Some sort of if/then logic would suffice.
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Apr 4, 2010
My operation system is Window XP in Chinese. I'm running flex sdk > asdoc in command line. Asdoc picks up the system default language. How can I force it to be run in English language environment?
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Jan 10, 2011
I have an app w/ a login screen. When the user hits "enter", the state changes to "login" & a child component is triggered to load (though the child stays invisible at the moment). The child contains many functions that the user needs upon logging in (ie their screenname & settings are retrieved from a database). The following is included in 'Parent':
<local:comp id="localComp" includeIn="login" includeInLayout="false" visible="false"/>
<mx:Button label="login" click="currentState='login'"/>
<mx:Button label="logout" click="currentState='Default'"/>
My problem is when a user logs out (state changes to 'Default') & then logs back in (state changes back to 'login') the child doesn't get "triggered" again & the functions w/in the child don't reload. Is there a way to force my child to refresh?
Note: While it would be easier to just move the child's functions to the parent it is complex...I moved these functions to the child to make it easier to follow
UPDATE: I even tried adding an "exitState" to my state:
<s:State name="login" exitState="removeElement(localComp)" />
This doesn't work either, as I get an error: "RangeError: Index 0 is out of range."
UPDATE: Even though you are allowed to call a child's function from a parent, my problem is that the child needs to be "created" in order to not show errors. It makes no sense to me why the flex team would make something like removing & adding children so complicated.
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Jan 28, 2011
I'm using an iFrame in a Flex 3 project. The problem is that if the user opens my site in a small browser window, they don't get scrollbars. How can I solve this problem? Is there a way to force the browser to put up scrollbars?
If I set the main app to horizontalScrollPolicy="on" verticalScrollPolicy="on" or to "auto", then as you scroll down, the iFrame is stuck to the top of the browser window and obscures the content.
In the main app:
[Code].....
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Sep 6, 2011
I've created a Flex website that plays a video using the Spark VideoDisplay component. When selected, the VideoDisplay loads in the PopUpManager.
This works fine in all the browsers, except Google Chrome take significantly longer to start playing, during which the CPU usage peaks, then goes back down once video starts playing.
I've traced the player states it goes through and they are as follows:
Loading ready (hangs for ages with high cpu) buffering playing (immediately after buffering, CPU usage goes down, video plays smoothly)
What could be causing this to temporarily hang for so much longer in Chrome? I thought I could expect the same functionality and behaviour throughout all the browsers, as Flash is simply a plugin that runs as a separate process?
Edit: It seems that it's the same in Opera too. Is there any commonality between the two that would explain this behaviour?
[Code]....
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Aug 7, 2009
I got a textfile who i am reading on a serverside script and passing it as a script to my client side as3 code. The problem is that i am using characters like ä,ö,ü,ß and this isn't well displayed. I tried System.useCodePage but the compiler complains about : 1120: Access of undefined property 'System'. It doesnt matter if I tried this on the first line of the 'Action' in the first scene or in the first line of the first .as file i am loading. (btw i am only working with .as file and not in the timeline). When i am importing flash.System.* the compiler complains he dont know useCodePage.
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Jul 22, 2009
I have a page-like flex application. In my main application is a holder (a canvas) that displays all the pages. The problem is that the components that are loaded inside the holder are bigger than the holder is when the main application starts. The holder height is set to 100% but still he gets scrollbars when I load a bigger component inside of him then himselHow can I solve this problem? And if it isn't solvable would it work correct if I use a viewstack?the holder looks like this:
<mx:canvas height="100%">
</canvas>
But the end of the application is 500 pixels lower so canvas height is 500 pixels high. Now I put a new child inside the holder that is 1000 pixels high.
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Jul 29, 2009
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)
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Oct 4, 2009
When I try to access the hidden TABs of my tab navigator control in action script, it returns a null error. But it works OK if I just activate the control in the user interface once. Obviously the control is not created until I use it. How do I make all the tabs automatically created by default ?
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Nov 24, 2009
I create a custom component to override the linkButton to make it behave that if an exist value is found, it would shown as "Added".
By default the button label is "Add to cart", I could not make the button become "Added" after trying many trial and error on uHandler which I suppose, COMPLETE, ENTER_FRAME, CREATION_COMPLETE could not even update the label.
public class Btn extends LinkButton{
public function Btn(){
super();
[Code]....
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Dec 15, 2009
Is there a way to make the datagrid scroll if it's width exceeds it's parent container (instead of making the parent container scroll?) I have a datagrid with a fixed column, and of course I want the scrollbar to appear for the datagrid and not the enclosing HBox. I already set minWidth of the HBox to 0, tried autoLayout=false, but with no effects. The datagrid is dynamically created in AS3, so the enclosing container.
Maybe I did not express my needs clearly - the content of the datagrid should not be wider than the datagrid itself. I just want to surrounding Canvas of the Datagrid to not have any scrollbars and let the datagrid itself scroll. But just setting the scrollpolicy to off on the Canvas will not yield to scrollbars on the datagrid, it will rather clip the data.
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Mar 5, 2010
I have an item renderer that checks an external source for display information. If that information changes, I want to force all item renderer instances to check it.
What's the best way for force all the item renderers in a list or grid to either commitProperties or execute some other method?
I've read that resetting the grid.itemRenderer property will make them all initialize. I've also received the suggestion to iterate recursively through all the grid's children and call invalidateProperties on all the UIComponents I find.
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Apr 6, 2010
I have item renderers in an mx.controls.Tree that I need to refresh on demand.
I have code in the updateDisplayList that fires for only some of the visible nodes no matter what I do. I've tried triggering a change that they should all be listening for; I have tried clearing and resetting the dataProvider and the itemRenderer properties.
private function forceCategoryTreeRefresh(event : Event = null) : void
{
trace("forceCategoryTreeRefresh");
[Code]....
The nodes refresh properly when I scroll them into view (e.g. the .data gets set), but I cannot force the ones that already exist to refresh or reset themselves.
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