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mx.controls.Label is a glorified wrapper for
TextField. TextField is the basic, intrinsic GUI object for a TextField in
Flash. Label ensures it's only 1 line, doesn't word-wrap, and has a nice
API compared to the TextField. It does a lot of other things, but the
key point here is that it wraps TextField.
TextField supports some MovieClip methods &
properties, namely _x, _y, _width, _height, and most importantly _alpha.
Alpha, however, works in 2 ways on TextFields. It's either 0 (which is
almost the same as _visible = false) or 100, which is about the same as
_visible = true. The only time TextFields respect an _alpha value of
1 through 99 is when the fonts are embedded.
mx.effects.Fade does just that; it tweens the
alpha value on MovieClips and TextFields. Therefore, while Fade is
technically supported and compiles, it will not fade device text; device text,
at least the way it's implemented in Flash, cannot "fade". Perhaps the
compiler should issue a warning about this.
Dissolve, however, adds a vector cover of sorts,
which IS fadeable, and fades that in. Therefore, you get the illusion of
the text fading out. Smoke and mirrors.
Hope that makes sense.
----- Original Message -----
Sent: Saturday, December 10, 2005 4:16 AM
Subject: Re: [flexcoders] Why does this effect not work?
As to your guess with Device Fonts and effects, the thing is
that using an
<mx:Fade .../>
on a Label's
show/hideEffect attribute does work. So it must be anything with the
code...
I really want to got this solved because I wanna make use of
programmatic effects quite frequently.
Best
regards
RR
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-----Original
Message-----
From: flexcoders@yahoogroups.com
<flexcoders@yahoogroups.com>
To: flexcoders@yahoogroups.com
<flexcoders@yahoogroups.com>
Sent: Sat Dec 10 02:39:17 2005
Subject:
Re: [flexcoders] Why does this effect not work?
My guess is that that
particluar effect doesn't work because you cannot fade device text. Text
in Flex is by default, device, meaning it uses device fonts, or native OS
machine fonts. If you were to embed the fonts for that Label, I be it'd
work.
Therefore, use a Dissovle instead for text specific fades... or
embed the fonts.
More context:
http://www.jessewarden.com/archives/2005/10/mxeffectsfade_v.html
-----
Original Message -----
From: Ralf Rottmann <mailto:[EMAIL PROTECTED]>
To:
Flexcoders@yahoogroups.com
Sent: Friday, December 09, 2005 8:29
PM
Subject: [flexcoders] Why does this effect not work?
Hi
there,
Following up on the recent posting related to Flex effects, can
anybody comment on why the following very simple code excerpt does not work? All
I want to do is on click of the button fade the label from 0 to
1.
private function FadeIn():Void {
var fx:Fade = new
Fade(this.lbl);
fx.fromAlpha = 0;
fx.toAlpha =
1.0;
fx.duration = 2000;
fx.playEffect();
}
<mx:Label id="lbl" text="some text"
/>
<mx:Button label="Start Effect" click="FadeIn()"/>
What it
should do:
Render the label.
Render the button.
Wait.
User
clicks.
Label hides (alpha = 0).
Label slowly fades alpha to
1.
However: No fade at all happens.
Why?
Isn't this exactly how
effects are supposed to work conceptually?
(Talking about Flex 2 Alpha 1
here.)
Best regards
RR
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