factor...
Thanks for any help!
- Kyle Neath
Well, it took me a long time of random searching but I did finally
answer my questions. For the record, here's what I found.
1. This happened because my top/left marker was a bit off (you can see
the star icon in the top/left of the scale9 image). It was creating
some false negative left margin
level.
Thanks!
Kyle Neath
http://warpspire.com
[EMAIL PROTECTED]
You might want to check your namespaces. Last time I checked,
DropShadowFilter is under the flash.filters namespace, not mx (Flex). The
dropshadow is definitely available in Flex 2, and even implemented in almost
all of the default skins :)
- Kyle
The best method I've found is to just remove all native controls (by
uncommenting a directive in the air xml file, and adding showChrome=false
to your WindowedApplication). From there, it's pretty trivial to mimic
native functions. Here's the ones used for beta 3 (they changed it, so
googling
They're display only. Here's my renderer:
http://warpspire.com/misc/WAGridBooleanRenderer.as
I also tried using an embedded image -- seemed like the performance
was pretty similar between the two methods.
Thanks!
Kyle
As an aside: I'm starting to think that optimizing the horizontal
scrolling is simply not going to be possible.
What do you think of futzing with the scrollbar so I can make it
render on the left side instead of the right side (for vertical
scrolling) ? Would that be terribly difficult? If I
Hey Alex,
As mentioned -- I did try that (using the code from your blog), even
using a labelFunction instead of dynamically detecting the on/off: it
was still about the same speed. The performance hit is somewhere else
deep inside DataGrid. I've spent many hours researching performance
of my
Hey Alex,
I know, it's hard to believe -- but I guess you'll just have to trust
me on this one ;) I've made this same renderer about 10 times and
spent a good 40-50 hours trying to improve the performance -- even
going so far as removing all logic from it at times. It's not the
renderer itself
Ah sorry, I missed that question. There's 30 visible columns right now
(70-ish total), with about 20 visible rows (depends on your viewport
height).
Nope :(
CSS is more of a bullet-point feature of Flash/Flex than the
awesomeness it is in HTML. It can help style some elements without
mucking up your MXML too much, but it only supports tag names and
style names -- and only styles (fontWeight, fontSize), not properties
(like width, height).
Does anyone know what might make horizontal scrolling of datagrids
really, really slow? Even with default headerRenderers, scrolling
horizontally takes about 1-2 seconds per scroll, while vertical
scrolling is nearly instantaneous. My cells are almost square -- so
it seems like it should be
They're usually listed in the styles section:
http://livedocs.adobe.com/flex/2/langref/mx/containers/Panel.html#styleSummary
I'm using a custom itemRenderer that displays a checkmark (or not)
right now (I spent a long time optimizing it -- the itemRenderer is
good to go). Right now about 600 itemRenderers are visible at once
(though more than half of them are technically empty).
I guess I'm mostly stumped at how
Well, I believe TextField's are leaf nodes, meaning they can't have
children. Also, if you'll look at the Object Heirarchy, there's no
DisplayObjectContainer in there -- so I doubt you're going to get much
traction. You're better off making a UIComponent and putting a text field
inside of it.
I feel like I'm coming to a point now where I get the basics of Flex.
I've got the whole component architecture down, I know the basics of
Actionscript. I can create my own components by extending UIComponent
and implementing the proper interfaces.
But I still feel like there's so much I have to
Doug: Heh, I think that's part of the thing that drove me here. One of my
first projects in Flex had a lot to do with DataGrid. After sitting there
for 20 seconds while my Grid rendered, I had tons of fun reading pretty much
every line in DataGrid and DataGridBase. What came out of it was that
You can extend either .mxml or .as universally. They're in fact the
same thing to Flex.
.as extending .mxml
myComponents/TestComponent.mxml
in your .as:
public class TestComponentExtended extends TestComponent
.mxml extending .as
myComponents/TestComponent.as
in your mxml root tag:
It seems like I'm having a stupid problem with reading styles from a
stylesheet. Right now, I've got a renderer being used for a
DataGridHeader. This header has three graphical icons that used to be
buttons. But now I'm making the buttons DisplayObjects for the sake
of optimization.
I'm trying
So, I'm a pretty hardcore OS X guy and absolutely love Texmate. I also am
starting to really get into Flex, and the little things about Eclipse are
starting to drive me absolutely batty (shift tab outdent, what??) Has
anyone looked into building some simple functionality into Textmate (proper
If someone can help me get this working, I've got $15 in Paypal for them.
Seriously, I know I feel stupid but I don't know how to make this renderer
lighter weight. Don't need any 100% code -- just some information to get
the basics (i.e. should I use Button? should I use Image? should I use
Right now I have a fairly complex header renderer with rotated text and
three buttons. It's my current bottleneck (thanks a ton for everyone who's
helped me so far) and I'm not sure how to approach it. Right now it is a
Canvas element with three Buttons and one Text using an embedded font
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