Flex :: Animate Between States In A Programmatic Skin?
May 12, 2010
I have a button with the various states (up/over/down etc) that uses a skin file to render the display. I want to achieve animation between the states. For instance, between the change from 'up' to 'over' I want to fade in a color and a border.
The way I am doing this at the moment is to use viewstates and animate between them using transitions and the mx:AnimateProperty. However, using this method I can only animate one property per viewstate. So only the border, or the color can be animated.
Does anyone know how I can achieve multiple animations on multiple properties of a programmatic button skin?
I created a skin to show on Button mousedown.I want to give corner raduis and border thickness also as skin attributes because I gave them to the button in the normal way but they are not working on mousedown when I chose to give skin on it.[code]
SkinParts are a great way to add event handlers and logic to an object that is instantiated in the skin, away from any business code. Often, though, I find myself wanting to do the opposite, and define parts that will be used in reusable, skinnable containers in the parent mxml files which will be inserted into the skinned containers.
What's the best practice for when you want to be able to define a control and a skin which can be reused with different controls inserted from outside the skin? Edit: A better way to put this might be that I want to use something that works a little bit like a SkinnableContainer, but that isn't limited to one area where content can be placed.
I extend Button to create ImageButton, and I extend ButtonSkin to create ImageButtonSkin. But, when I define hostComponent like this:
public var hostComponent:ImageButton
I get an error that there is a conflict with hostComponent:ButtonBase inside the ButttonSkinBase. How do I extend a skin AND provide a new hostComponent for it?
I am trying to programmatically skin a PopUpButton control in Flex Builder, but having no luck. As far as I know this requires writing a custom skin class or creating a modified version the control class itself (since the control is MX and not Spark). Again, just to clarify, I want to programmatically modify the appearance not simply set styling properties or display an image. I've been able to do this programmatically with other MX controls (e.g. tabs in a tab navigator), but not with the PopUpButton.I think part of the problem may be that the control is actually composed of two separate buttons, so you cannot draw just one rectangular area over the whole control.
How can we embed the over,up,down etc skins defined as sybols in a .swf file... i mean in skin file how can i specify those symbols to be used as up,over,down skins.
I am having 2 problems creating programmatic skin for Canvas.
First problem: I would like to have background with rounded corners and I am using GraphicsUtil.drawRoundRectComplex in order to have round corners for only the upper two corners. The problem is that drawRoundRectComplex takes for each corner one single parameter - the corner radius. However my scaleX and scaleY factors are different and in fact the corners are not properly rounded because I either can set the radius using scaleX or scaleY. Graphics.drawRoundRect is better because it takes two parameters for the corners - elipse width and height and then you could apply both scale factors but it doesn't allow me to specify different radius for different corners. How to use GraphicsUtil.drawRoundRectComplex when scaleX and scaleY are different.
Second problem: Even though I set my programmatic skin through style - <> the skin's updateDisplayList gets executed only once and after that somehow "backgroundImage" style gets "undefined" and my programmatic skin is not associated anymore to the Canvas instance. As a workaround I am setting on each resize event "backgroundImage" style again but this is ugly. What could cause such "silent" resetting of the "backgroundImage" style to undefined?
I need to to a programmatic multi column sorting on the AdvancedDataGrid.The issue is, currently I am implementing paging on my grid. So, if I sort the data,only the perticular page is being sorted. So,I need to sort the entire list by the column criteria.I tried HeaderRelease event,but I guess it is of no use as I need to make a round trip call to the server to get the sorted data.Is there any way I can implement that.I also need to show the sort markers in the Column headers' right position, indicating the sort numbers and direction.
When does the event listener for "itemEditBegin" get added and removed? Is this essentially the same as:
<mx:DataGrid id="myDataGrid" creationComplete="myDataGrid_creationCompleteHandler(event)" /> protected function myDataGrid_creationCompleteHandler(event:FlexEvent):void {
[Code]...
Basically, I'm wondering where I should add "myDataGrid.addEventListener" if I want to do it programmatically? Should it be in the creationComplete listener function of the object itself, or perhaps in the creationComplete listener function for whatever parent object it resides in?
I would like to scroll the amcharts flex stock chart programmatically on it's horizontal axis, in other words along the time axis. I need to do this, because I need to scroll one period at a time and would like to hook this up to keyboard events. I couldn't find anything in the documentation here: [URL]. I've also tried mucking around with the period selector to see whether I can change the values on it, but no luck there.
I'm working in Flex 4.1, and I have a viewstack and tabbar as my main navigation. A user logs into the application and should then only be able to see what tabs are available to his user level.I am trying to stick with MXML as much as possible, since it works well with the framework. But I'm goin numb thinking about this. What are the common practices for doing this?FYI: the user level is slightly to complex for states. There are lots of options, way to many to comfortably do w/ states and state groups.
Chimp is a pretty cool library for those interested. It's a little old and there doesn't seem to be much motivation to expand it past UIComponents. So for my purposes it wont do.Again, what do you do for setting up these systems?PDATE: I had to compromise, but it actually worked out pretty well in the end. Instead of destructively laying on permissions (having everything available at first and removing the elements thereafter), the system now works constructively. Here's a sample:
[Bindable] public var managePage:ManagePage; [Bindable]
I'm interested in finding out the best approach to this issue, it's not technically difficult but there must be an elegant solution. Basically i have a form that features mostly text inputs, i would like to change the style of the input boxes based on the current state. I can do this in the mxml on each input...
I'm trying to work out how to use states in my Flex app.I've created two states, State1 and Stage 2. Both are based off the base state. I've created a few visual elements for State1, and given each of them includeIn="State1".But when I'm in design mode and click on State2, these elements are still visible?If I try to delete them while State2 is selected, all that happens is RemoveChild is added to the State2 tag.
I'm using the default CS4 FLVPlayback skin, mainly the SkinOverPlayMute.swf. I know there's a skinAutoHide option, but because I don't want it to auto play, I want people to see a play button when they first encounter the video (so they don't think it's just an image). But the skin needs to hide when the video is actually playing (so the video doesn't get blocked by the controls).
In other works - when video isn't playing: skin showing; when video is playing: skin hide.
I have an app that I am currently using a viewstack to display each page and I am wondering is this the right way to go, or should I use different states (or something else).
The site is powered by a menu bar with the top level items of Home, Tools, Support. Underneath the Tools menu is a submenu with Tool1, Tool2, Tool3. Currently when the user clicks on any of the tools in the Tool submenu I bring up a child container from the viewstack (each child is actually in a separete component).
I have the following panel component called AdvancedPanel with controlBarContent:
<!-- AdvancedPanel.mxml --> <s:Panel> <s:states>
[Code]....
Using the CustomAdvancedPanel inside an application component shows an empty panel with the "Go to edit" button. But when I click it, the "Extra edit button" becomes visible, but the "Show in edit" button inside the controlBar doesn't.
When the CustomAdvancedPanel is empty, without redeclared states and "Extra edit button" the panel works just fine.
I think it is because the State object declared in AdvancedPanel isn't the same as CustomAdvancedPanel, so the state is different, even if they have the same name. However. I can't use the states of AdvancedPanel inside CustomAdvancedPanel without (re)declare them in mxml.
Is there any way to achieve this kind of state-reuse? Or is there a better way to obtain the same result?
I am trying to use global application states to manage roles in my application. How can I use <properties.state> everywhere in my application if I declare it in my top level application?
I am creating an interface that has a few different states for the different steps. For those steps, there is data that I am pulling in from a database to fill certain fields. As of right now I am doing one db query to get all of the data back and want to fill in all of the fields at the same time but it is giving me "access to a null object reference".
It seems as though there is a scope issue when you are trying to access a text input field with actionscript when the state that the text input is in, isn't the current state.For Example (This would throw a "Null object reference" error):
I'm developping an mobile program with the Flex 4.5 SDK, this for my thesis for school. I have a bug in my program that I can't fix. I have a view where I have 2 states. When I change from state my program doesn't listen to the backKey event anymore.
In my flex project i used one option like Link button . If i like it will be open new page contain more information and components . Which container is suitable one ? Where is used viewstack and stages ?
I was recently profiling my application that uses Degrafa States in the skins and noticed that doing so uses more memory than I expected. Between the SetProperty and State, they were using about 10% of the total used application memory.
Would it be better to use css for the state changes and a new skin for each state? or Are there some simple tips to reducing the memory footprint of degrafa?
I am having an issue with flex states in my application. What I am looking to do is on creation complete of the application, obtain a user role guest/user/superUser (based on username and password) from a server, then set the state client side based on that information. My .mxml classes need to include certain graphic elements based on that state. I am running into the issues of including elements based on the states defined at the Application level of the project. I am trying to avoid having to define the states in each .mxml file that needs it.
Below is a very simple example, randomly, if I click the step2 button the state will change but the Step 2 panel will not be there.
I suspect the children of the state are not getting created for some reason, which is why I set the itemCreationPolicy to "immediate", but it makes no difference This is catastrophic for the application because the user is left in limbo and is forced to refresh
State transitions in flex are very helpful. Is it possible to add an automatic state transition between state A and state B in case there is no user response for 5 mins in state A or pop-up an alert?
I have several custom components all of which are included in the parent application.When I try to change state from a custom component, I get an error saying "undefined state: state name". How do I change the state of the application from within a custom component ?
