ActionScript 3.0 :: Getting Label's Height To Determine It's Y Within A Class?
Aug 11, 2010
I got something like this:
var myClass:myClass = new myClass;
addChild(myClass.showLabel);
Then, inside this class there's this code:
[code]......
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Dec 9, 2011
I am trying to determine the height of a Spark label that becomes multiline at runtime (due to width property being set), to account for text overflow.
(For a spark label named Title) I have tried:
Title.measureText(Title.text).height - this seems to return only the height of one line. (Due to differing screen-sizes and font rendering, I don't know in advance how many lines the text would overflow to...)
Title.height - this seems to return the height of the label size (before being re-adjusted at runtime for multiline text flow)
Both properties above return an unchanging value even when different text lengths/multiple lines long are filled in .text
Is there really no way to determine the exact height of an overflow Spark label?
I am admittedly not that familiar with the Flex API but after scouring the manual for quite some time, I am still unable to place this title label with the proper spacing.
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Oct 15, 2009
I'm creating a number of text boxs through code. I want to space them out by determining the height (one, two, three, lines of text) and adding 24 pixels space. I highlighted the code in red thats not working the way I want. What other techniques could I use to accomplish this?
Code:
var MytextsA:Array = new Array("12345123451234512345123451234512", "secondElement", "thirdElement", "fourth");
var Args:Array = new Array("First", "second", "thirdt", "fourth4");[code].......
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Apr 24, 2009
I'm trying to place a displayobject at the bottom of the stage with scale mode set to exact fit. stageHeight returns the actual height in pixels, but the stage scaleY still returns 1.Isn't there a simple way to determine the original height for object placement?
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May 6, 2009
I need to write a function that will position a movieclip depending on the height of the stage.I'm a little uncertain as how to proceed with this, as my knowledge on AS2 is still developing..Basically I want something like the following thought process:
if stage is < 500px height, then movieclip_y=(Stage.width/2)-100
if stage is > 500px height, then movieclip_y=(Stage.width/2)+100
I hope this makes sense. I guess I'm unsure as how to determine the height of the stage (I've created a stage that sizes itself to the browser dimensions).
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Aug 13, 2009
Is their a way to determine the height and width of your flv f4v file after you dynamically load it?
Couldn't find any properties in the loader or netstreaminfo that I could grab the info from.
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Mar 16, 2010
Maybe I'm googling for the wrong thing but I can't find anything on this.
How can I change the line height of a Label element in Flex?
I have two labels in a VBox and there is quite a lot of white space between them which I would like to reduce. There's no line height property and setting the height property causes overlap.
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Jun 17, 2011
I'm looping through a recordset, and for each item I create at runtime a spark Label and set the text property from a field of the recordset. The labels must have a fixed width and some text goes multiline. I want to arrange the label vertically so I need to know the height of the label so I can place the next label properly, but when I try to read this property, after the labels is added through the addElement mehtod, it returns 0.
how to get the label height?
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Jan 31, 2012
How do you determine the line height (in pixels) of the text in a Spark Label?
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Mar 10, 2011
i'd like to throw an argument error if a particular function doesn't work without a passed value that also happens to be a public constant of the class containing the function.is there anyway to determine if a class owns a public constant instead of having to iterate thru all of them? something like this:
public static const HALIFAX:String = "halifax";
public static const MONTREAL:String = "montreal";
public static const TORONTO:String = "toronto";[code]....
currently, for this functionality i have to write the city setter function like this:
public function set city(value:String):void
{
if (value != HALIFAX && value != MONTREAL && value != TORONTO)[code].....
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Apr 21, 2011
since the MXMLC compiler doesn't support mixed access modifiers for setters/getters, i would like to know whether a public setter function is being called from inside or outside of the setter's class. this approach should allow me to maintain a public property but with more security, something like public/private hybrid access. is it possible to use arguments' callee property, or perhaps something else, to determine whether the setter was set internally from the setter's class or if it was set externally?
[Code]////
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Apr 16, 2010
I am working on a Flex Front End at the moment, and have been using the Parsley framework for passing messages/events around.
I was wondering if there is a simple way for a function (in this case, an event's constructor) to obtain a reference to the object which called it?
This is to ensure that a certain event that I am defining can only be dispatched by one specified class. My thinking is to check the caller of the constructor somehow, and throw an error if it is not of the correct type.
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Jan 28, 2011
For this example, I will use 2 classes, Entity and CSpawner. CSpawner is a children of Entity.I want to perform the following condition:if((new CSpawner()) is Entity)It works just like intended.But I want to do this test, without creating a new CSpawner object, something like this:if(CSpawner is Entity)But it doesn't work, because CSpawner is a Class.How do I perform that kind of conditional without creating a new CSpawner object?
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Jul 13, 2011
In Actionscript 3, if I'm given a Class object, is there any way to determine if that class extends from another given class? I don't want to instantiate the class to check it with the is keyword, though.
[Code]...
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Apr 21, 2011
This is probably a silly question buy how do I find out if an Actionscript Object is just an Object ,but NOT any subclass IE String bool etc?[code]...
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Sep 11, 2009
I recently found a method (ByteArray.clear()) that FlexBuilder complains is possibly undefined; however, the method is in fact documented in the Flex LiveDocs. It must have been added in a later version of the SDK than I have installed. I'm not asking about this particular method, but I'm giving it as an example of the documentation issue that I'm trying to resolve. My questions are:
How can I determine what version of the SDK or Flash player that a method or property was added in? How can I tell which versions of the SDK are supported on which Flash player versions?
I want to be able to determine from the documentation, instead of compiler or runtime errors, what SDK and Flash player versions are needed to support newly added methods.
With Java I look for the @since javadoc tag when I need to know this, but I can't find an equivalent feature in the Flex docs.
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Sep 18, 2011
I want to use height in [SWF height=200] for class variable.
I tried the following code but it causes compile error.
const SWF_HEIGHT:int = 200;
package {
import flash.display.*;
[Code].....
If I use the number, 200 instead of const SWF_HEIGHT, the compile error doesn't happen. But I don't want to write the same number on 2 places.
Is there way to avoid writing the same number on 2 places?
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Mar 25, 2010
I have a label component in a mxml file like below
<mx:Label x="700" y="409" text="Label" id="lble" width="131" height="41"/>
if i want to access it and change its text content within a method defined in action script class that i have written, how to do it?
lble.text="test";
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Feb 29, 2012
Is it possible to change a frame label within a gotoAndStop('label') with the parameters in a function?I'm playing around with updating code as I learn more and more techniques, and at the moment the code is a basic click-a-button to select the object shape, and on press the button disappears:
// Change the object into a circle.
circle_btn.addEventListener(MouseEvent.CLICK,function(){changeShape_fun(circle_btn,circle);});
// Change the object into a square.
square_btn.addEventListener(MouseEvent.CLICK,function(){changeShape_fun(square_btn,square);});
[code]....
However I can't/don't seem to know how to change a frame label through function parameters, or if what I'm trying to do is even possible.Also to note, while I'm all ears for any more efficient ways of doing what I'm trying to do, I would still like to know how/if you can change frame labels through function parmeters.
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Mar 25, 2011
I would like to use a movieclip to load a flv video. The problem I have is that I want to change the video dimensions. I've tried several software to change the video dimensions but as far as it seems all of them keep the same height-width ratio than in the original video. Is there any software that would allow me to change the height and width without keeping the same height/width ratio as in the original video file?
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Jul 1, 2010
I am resizing a movie clips height automatically to match the height of some dynamic text that is displayed above it (will eventually be loading it from xml ). is there a way to keep a safe margin top and bottom? this is my code so far Text_Box_Graphic.height = Text_Box.height;
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Nov 10, 2009
I want to constrain the height of a flex component to the height of the browser viewport.
The component's children are populated from a database table using a repeater, and are basic checkboxes. There are enough of them that the flex app ends up being about twice the height of the screen, which means some of the rest of the layout goes crappy on me. How can I force the component that contains these to limit itself to the size of the viewport?
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Apr 1, 2010
How to set a Spark List height to the height of its content?Tried this:
var lastRow:IVisualElement =
myList.dataGroup.getElementAt(myList.dataGroup.numElements - 1);
myList.height = lastRow.y + lastRow.height;
It works in case of a single item, but lastRow is null in case of more items.
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Apr 5, 2010
By default the height of an Flex Accordion container is the height of the initially selected child. I'd like to be able to set the height to the tallest child so that no resizing or scrolling is necessary when other children are selected. I do not want to use the resizeToContent property. I want the size of the container to stay constant no matter what child is selected.
My current thought is to extend the accordion class setting the creation policy to "all" and then override the measure function to loop through all the children and find the tallest one and use that for the height. This seems a little kludgy though, so I'd like to know if there is a better approach. Ultimately my question is: is there a way to set the size of an accordion container such that the container never resizes and scoll bars are never necessary to display any of the children?
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Jan 11, 2011
I have a bit of graphical content inside a symbol that I've created in Flash CS5. Let's call it FunGraphics_Art, it's set to export, and it extends MovieClip.When I edit the symbol in Flash and I hit control-A, the properties panel tells me that all of the content has a height of 72 pixels, positioned at 0,0.The content consists of a few (classic) textfields, and a couple of Checkbox components and a few bits of vector art.All the content is on a single frame, no layers.So far, so good. I export my art as a .svc and am able to use it all in code just fine. However I then add the following bit of code to my .as file..[code]Somehow, there's something strange going on that's causing Flash to think my exported symbol is about 75 pixels higher than it actually is. I've looked around for invisible "blank" textfields, but haven't found anything yet.
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May 6, 2011
I've created a dynamic text field, and set autoSize to true, so it can grow was tall as necessary. I then want to use the _height value to size a container graphic (speech bubble). Here's the (simplified) code:
[Code]....
Returns 19.6 followed immediately by 35.2. It's as though reading txt._height causes it to recalculate, so it's correct the second time. I also tried the textHeight property, which also seems to get recalculated after _height is accessed. This sequence, for example:
[Code]....
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Aug 9, 2011
I have a problem with an flash object. The object is an expanding topbanner, but when retracted, the on mouse over effect still appears on the invisible part of the banner. The code is the following:
<div id="exp_banner" style="width:930px; height:180px; overflow: hidden; position: absolute; z-index: 100;">
<object type="application/x-shockwave-flash" data="test.swf" width="930"
[Code].....
I have tried to add a style height to the object with an height of 180px, but then the banner scales down.
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Nov 8, 2009
I made a scrollbar class that works pretty well. I'm trying to come up with an idea for how to set to the height of the scrollbar vs the height of the scrolling content. This is a standard thing that happen in the OS. Seems there should be a minimum number and the maximum value should be reached as the size of the content approaches the size of the visible area.
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Mar 5, 2010
I created a class, extended the sprite class, and now in the constructor I am trying to set the Sprite's width and height properties which are inherited from the DisplayObject. However, after I set this.width and this.height, and print the values, I get 0 for both.
What the heck is going on? When I view the livedocs I see that DisplayObject has width and height listed as public properties. I have been able to instantiate a Sprite directly, and set the width and height after it's been instantiated, so I don't get it.
package {
import flash.display.*;
public class ScrollBar extends Sprite {[code].....
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May 26, 2009
I am going to embed a Flex app on an html page. The html page is already going to have a scroll bar to scroll up and down. The contents of the flex app are very dynamic, and I don't want to have an extra scroll bar when there is already one. So is there a way to make the height of the swf match the height of the contents of the swf?
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