I have the following problem. I use a custom component for painting a graph on a canvas, now when the windows is resized I want to determine the actual width and height of my canvas to resize the graph as well, therefore I used the resize event I can use in mxml.
Now I detected in my method for resizing I only receive the width and height of the canvas just before resizing not after. When grabbing an edge of my window and moving it slowly for resizing this does not matter but when maximizing or minimizing the windows, this plays a more important role. Can someone tell me the reason for that behaviour? What is the proper solution for that problem?
Thanks in advance
Sebastian
If you use the resize event, you should check the width and height of currentTarget property in the event.
Related
I've started learning flex and as a first project I've created a component from the example found here component with which I call into the main application (web based).
When I rotate the image it goes well,
however, when I resize the application, my component which fills the application container ie width, height 100%, seems to make the rotations calculus based on it's previous width and height.
So basically the rotations go wrong when I resize the app. Any ideas on how to fix this?
I had to recalculate the view's perspective point upon the app resize event.
All,
I am writing the CSS for our web application. The whole application needs to fit in the browser window without any scrollbars appearing. I also want to set a min-height & min-width properties so that if the browser window gets smaller than our min., only then will the scroll bars appear.
Is there a way of achieving this in CSS please?
Your problem depends to the screen size of the viewers, which may varies greatly. My propose is that you should create a fix width/height div which is the wrapper of all the content (usually 1024x768).
How is it possible to (automatically) adjust the height of a Flex (4) application at runtime so that only the HTML-page scroll bar is shown, not any Flex scroll bar?
I'm using a ViewStack control which will change always its content. So every time some new content (NavigatorContent controls) is shown (which apparently will have different heights) i want the application height to adjust its height in a way it is reflected in changing only the height of the HTML-page.
I have the slight feeling that this means changing the height of the SWF at runtime! Is this true? If yes how to tell the page ? Is this possible?
I hope i explained my problem as close as possible.
Thanks in advance.
If you haven't already come across a solution to this here's a blog post described a solution for this : http://blog.wezside.co.za/blog/fullscreen-flash-with-browser-scrollbar/
It's a little more then you may be looking for so here's the general gist of it:
Set the embedded swf in the html height to 100%
Then on page change in flash, use an ExternalInterface call to set the height of the container div to your flash content.
Enjoy browser scrolling for your flash/flex app :P
This is the solution which worked (for me)!
I have to load huge (3000x3000) pictures in SWFLoader, and no problems with that — everything works fine. But on low resolution displays (like 1024x768) i can see only a part of picture. So i need some kind of scroll bars to scroll around a picture.
How can I do that? Please help, because i simple have no idea.
Thanks!
SWFLoader extends UIComponent which doesn't support Scrolling.
You can enable scrolling by nesting the SWFLoader in any Container based component, Canvas for example (its horizontalScrollPolicy & verticalScrollPolicy is set to "auto" by default)
I have a simple Flex application that is a panel with a repeater inside of it; albeit a little simplified, it is like such:
<mx:Panel id="pnl">
<mx:Repeater id="rp">
<mx:Label text = "foo" />
</mx:Repeater>
</mx:Panel>
I am then embedding this Flex application into an HTML wrapper. I am then attempting to dynamically re size the embedded Flash object in the HTML as the Flex panel changes size (thus allowing the Flex application to consume as much of the HTML page as it needs).
I am doing this by doing the following actionscipt:
pnl.addEventListener(ResizeEvent.RESIZE,function(event:Event):void {
ExternalInterface.call("resize",event.target.height);
});
which in turn calls this javascript function:
function resize(height) {
// the embed or object that contains the flex app
var e = document.getElementById('flex_object');
if(e) e.height = height;
}
This seems to work perfect in IE, however I get strange results in Firefox / Safari, the repeater works for n number of times, and then the text seems to get cut off / disappear in the repeater, see the attached image:
alt text http://img528.imageshack.us/img528/9538/rpre0.jpg
Can anyone explain why this is happening, and if there are any workarounds / ways of doing the same thing?
I'm currently working in the same thing (a swf that dynamically changes it's height depending on the content it's currently holding). I also had a similar problem to yours trying to make a multi-line button.
I'm new to flex but I managed to solve the problem manually invoking the updateDisplayList() of the container... I think it "forces" a render somewhere... it's parameters are the width and height of some area where the changes happen. Sorry for not knowing the details... But it worked for me.
Why not simply using percent width and height on your HTML page for your Flash object ? This way you event don't have to do anything to resize your SWF...
That's very strange - it looks like Firefox/Safari are expanding the draw area of the embed, but somehow Flash is not getting the message that it needs to render the new pixels.
You could probably work around this by doing something to force Flash to update itself, but since the communication between the browsers and the embed seems to be confused it would probably be less hackish to take a different approach, that fits into the browsers' event flow without bugging.
For example, instead of resizing the embed, you might try putting Flash inside a DIV, setting the Flash's size to 100%, and then resizing the DIV. That seems a lot less likely to misbehave.
My experience is that Flex's resizing abilities are... funny. Sometimes they work the way one would expect, other times they do not. There are a couple of things you could try: first, trace the value you expect to get in Flex for the height or even ExternalInterface.call("alert",event.target.height); This will let you know if it is a JavaScript or a Flex problem for sure (but I suspect it is Flex).
Your problem might have to do with the scaling of the component:
Setting [the height] property causes a resize event to be dispatched. See the resize event for details on when this event is dispatched. If the component's scaleY property is not 100, the height of the component from its internal coordinates will not match. Thus a 100 pixel high component with a scaleY of 200 will take 100 pixels in the parent, but will internally think it is 50 pixels high.
If it is Flex and that does not help, I would try using callLater in front of the ExternalInterface call, often that will allow Flex enough time to figure out what the heck it is doing. Occasionally, setTimeout is needed, but I find that awkward.