[Wt-interest] animateHide() / animateShow() on the same widget happens instantaneously

[K. Frank]

Hello List!

I wish to use some animation when tweaking the appearance
of a widget -- say, changing the color of a button.

If I use animateHide() followed by animateShow() on the same
widget, I see no animation in the browser. That is:

myWidget->animateHide (WAnimation (WAnimation::SlideInFromLeft));
// tweak widget
myWidget->animateShow (WAnimation (WAnimation::SlideInFromLeft));

looks the same as just

// tweak widget

(The widget's appearance changes, per the tweaks, but no animation
is apparent.) It's as if the animateHide() / animateShow() pair has
been optimized away.

If instead I have two copies of the widget, myWidgetA (initially shown)
and myWidgetB (with the tweaked appearance, but initially hidden),
then

myWidgetA->animateHide (WAnimation (WAnimation::SlideInFromLeft));
myWidgetB->animateShow (WAnimation (WAnimation::SlideInFromLeft));

shows the animation and gives the visual appearance I am looking for.

Is there a way to get animateHide() / animateShow() to work with a single
widget? Is there a better approach to get a similar effect?


Thanks.


K. Frank

[Koen Deforche]

Hey,

What do you want to happen though? That both animations run sequentially
with no net effect?

Koen

Post by K. Frank
Hello List!
I wish to use some animation when tweaking the appearance
of a widget -- say, changing the color of a button.
If I use animateHide() followed by animateShow() on the same
myWidget->animateHide (WAnimation (WAnimation::SlideInFromLeft));
// tweak widget
myWidget->animateShow (WAnimation (WAnimation::SlideInFromLeft));
looks the same as just
// tweak widget
(The widget's appearance changes, per the tweaks, but no animation
is apparent.) It's as if the animateHide() / animateShow() pair has
been optimized away.
If instead I have two copies of the widget, myWidgetA (initially shown)
and myWidgetB (with the tweaked appearance, but initially hidden),
then
myWidgetA->animateHide (WAnimation (WAnimation::SlideInFromLeft));
myWidgetB->animateShow (WAnimation (WAnimation::SlideInFromLeft));
shows the animation and gives the visual appearance I am looking for.
Is there a way to get animateHide() / animateShow() to work with a single
widget? Is there a better approach to get a similar effect?
Thanks.
K. Frank
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[K. Frank]

Hello Koen!

Please let me describe my use case, below. But before I do,
let me emphasize that this is just a learning experience for me,
so let me make clear that my use case is not important, and is
really just an exercise I picked pretty much at random.

Post by Koen Deforche
Hey,
What do you want to happen though? That both animations run sequentially
with no net effect?

Let's say that I have two WPushButtons, one on the left, and
one on the right. The one on the left is labelled "Hello" and
the one on the right, "Goodbye".

I wish to animateHide both buttons, change the left text to
"Goodbye" and the right text to "Hello", and then animateShow
the two buttons. Roughly speaking, I wish to swap the two
buttons with some animation eye candy. (Again, this is all
just for fun.)

When I try the above, the animations don't appear -- the text
on the two buttons changes immediately.

I will note that in this experiment the two WPushButtons are
"inline" widgets. That is (referring to my other thread on
animation) I have not called "button_->setInline (false);"

Another detail: In one version of the experiment I did call
"button_->setHiddenKeepsGeometry (true);" on both buttons
so that the location of the one button wouldn't change when
the other button was being hidden. This was an attempt to
avoid having the changing location of a button confuse its
animation.

Any pointers -- for this unimportant practice project -- would
be greatly appreciated.


Thanks.


K. Frank

Post by Koen Deforche
Koen

Post by K. Frank
Hello List!
I wish to use some animation when tweaking the appearance
of a widget -- say, changing the color of a button.
If I use animateHide() followed by animateShow() on the same
myWidget->animateHide (WAnimation (WAnimation::SlideInFromLeft));
// tweak widget
myWidget->animateShow (WAnimation (WAnimation::SlideInFromLeft));
looks the same as just
// tweak widget
(The widget's appearance changes, per the tweaks, but no animation
is apparent.) It's as if the animateHide() / animateShow() pair has
been optimized away.
If instead I have two copies of the widget, myWidgetA (initially shown)
and myWidgetB (with the tweaked appearance, but initially hidden),
then
myWidgetA->animateHide (WAnimation (WAnimation::SlideInFromLeft));
myWidgetB->animateShow (WAnimation (WAnimation::SlideInFromLeft));
shows the animation and gives the visual appearance I am looking for.
Is there a way to get animateHide() / animateShow() to work with a single
widget? Is there a better approach to get a similar effect?
Thanks.
K. Frank
...