Re: [Interest] How can i animate Layout.preferredWidth and friends?
On Fri, Oct 11, 2013 at 2:37 PM, Saether Jan-Arve
jan-arve.saet...@digia.com wrote:
Of course it should not crash.
I get an ASSERT: mo in file qml\qqmlvme.cpp, line 849 (this is with
current stable branch though).
I'm a bit curious to know why do you want to animate that property?
What do you want to achieve?
Jan Arve
From: interest-bounces+jan-arve.saether=digia@qt-project.org[mailto:
interest-bounces+jan-arve.saether=digia@qt-project.org] On Behalf Of
Mark
Sent: 30. september 2013 01:40
To: Qt Interest
Subject: [Interest] How can i animate Layout.preferredWidth and
friends?
Hi,
I thought something as simple as:
Behavior on Layout.preferredWidth {
NumberAnimation { duration: 1000 }
}
would do.. Apparently not since it crashes qmlscene..
Do i need to do it differently or did i just hit a bug?
Version details:
Qt 5.1.0 x64 (i know, 5.1.1 is out)
Mac Mountain Lion fully updated
Cheers,
Mark
Hi Jan,
What i try to do is animate the (in this case) width. In a simple
description that would be it. However, i try to animate the with of a
component that is within a Layout. In this case a RowLayout. If i use
the width, the RowLayout itself doesn't update, you can see that in
this snippet [1]. Just press the nice orange square :) What i want
for that is to work. I tried animating the Layout.preferredWidth
property because changing the width using that does update the
RowLayout, but then the animation doesn't work.
That's all i'm trying to do.
[1] http://pastebin.kde.org/pxgjxhtza
Your example code works exactly how I would expect it to work.
You are only animating the width of the red rectangle, and the layout
doesn't rely on the width property for rearranging its items.
Therefore, the layout and the other children are not affected by this.
(Try to set opacity: 0.5 on the green item, then you will better see
what's going on :-)
I actually didn't do that before. Tried it out just now and it indeed does
exactly what i would expect :) Only issue is that the layout itself doesn't
do what i expect..
I was about to create a bug report, but the qt-project site is currently
extremely slow with the occasional timeout errors... So i will do that
later.
However, I would expect changing togglePreferredWidth to actually
toggle Layout.preferredWidth (while keeping the Behavior on width) to
do what you want, but I think that Behaviors are only applied if the
property
is changed in QML. (The width property is changed in the C++ backend of
the layout engine, which then wouldn't apply the behavior)
I actually tried that initially but that didn't work.
This modified example demonstrates the issue, and AFAIK it's a limitation
of the
Behavior element:
http://pastebin.com/bcD9wRu5
Jan Arve
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Re: [Interest] How can i animate Layout.preferredWidth and friends?
On Fri, Oct 11, 2013 at 5:08 PM, Mark mark...@gmail.com wrote:
On Fri, Oct 11, 2013 at 2:37 PM, Saether Jan-Arve
jan-arve.saet...@digia.com wrote:
Of course it should not crash.
I get an ASSERT: mo in file qml\qqmlvme.cpp, line 849 (this is with
current stable branch though).
I'm a bit curious to know why do you want to animate that property?
What do you want to achieve?
Jan Arve
From: interest-bounces+jan-arve.saether=digia@qt-project.org[mailto:
interest-bounces+jan-arve.saether=digia@qt-project.org] On Behalf Of
Mark
Sent: 30. september 2013 01:40
To: Qt Interest
Subject: [Interest] How can i animate Layout.preferredWidth and
friends?
Hi,
I thought something as simple as:
Behavior on Layout.preferredWidth {
NumberAnimation { duration: 1000 }
}
would do.. Apparently not since it crashes qmlscene..
Do i need to do it differently or did i just hit a bug?
Version details:
Qt 5.1.0 x64 (i know, 5.1.1 is out)
Mac Mountain Lion fully updated
Cheers,
Mark
Hi Jan,
What i try to do is animate the (in this case) width. In a simple
description that would be it. However, i try to animate the with of a
component that is within a Layout. In this case a RowLayout. If i use
the width, the RowLayout itself doesn't update, you can see that in
this snippet [1]. Just press the nice orange square :) What i want
for that is to work. I tried animating the Layout.preferredWidth
property because changing the width using that does update the
RowLayout, but then the animation doesn't work.
That's all i'm trying to do.
[1] http://pastebin.kde.org/pxgjxhtza
Your example code works exactly how I would expect it to work.
You are only animating the width of the red rectangle, and the layout
doesn't rely on the width property for rearranging its items.
Therefore, the layout and the other children are not affected by this.
(Try to set opacity: 0.5 on the green item, then you will better see
what's going on :-)
I actually didn't do that before. Tried it out just now and it indeed does
exactly what i would expect :) Only issue is that the layout itself doesn't
do what i expect..
I was about to create a bug report, but the qt-project site is currently
extremely slow with the occasional timeout errors... So i will do that
later.
However, I would expect changing togglePreferredWidth to actually
toggle Layout.preferredWidth (while keeping the Behavior on width) to
do what you want, but I think that Behaviors are only applied if the
property
is changed in QML. (The width property is changed in the C++ backend of
the layout engine, which then wouldn't apply the behavior)
I actually tried that initially but that didn't work.
This modified example demonstrates the issue, and AFAIK it's a limitation
of the
Behavior element:
http://pastebin.com/bcD9wRu5
Jan Arve
Bug report created: https://bugreports.qt-project.org/browse/QTBUG-34045
I hope i explained it well.
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Re: [Interest] How can i animate Layout.preferredWidth and friends?
On Tue, Oct 8, 2013 at 4:32 PM, Mark mark...@gmail.com wrote:
On Wed, Oct 2, 2013 at 2:25 PM, Mark mark...@gmail.com wrote:
On Wed, Oct 2, 2013 at 11:51 AM, Saether Jan-Arve
jan-arve.saet...@digia.com wrote:
Of course it should not crash.
I get an ASSERT: mo in file qml\qqmlvme.cpp, line 849 (this is with
current stable branch though).
** **
I'm a bit curious to know why do you want to animate that property?
What do you want to achieve?
** **
Jan Arve
** **
*From:* interest-bounces+jan-arve.saether=digia@qt-project.org[mailto:
interest-bounces+jan-arve.saether=digia@qt-project.org] *On Behalf
Of *Mark
*Sent:* 30. september 2013 01:40
*To:* Qt Interest
*Subject:* [Interest] How can i animate Layout.preferredWidth and
friends?
** **
Hi,
** **
I thought something as simple as:
** **
Behavior on Layout.preferredWidth {
NumberAnimation { duration: 1000 }
}
** **
would do.. Apparently not since it crashes qmlscene..
Do i need to do it differently or did i just hit a bug?
** **
Version details:
Qt 5.1.0 x64 (i know, 5.1.1 is out)
Mac Mountain Lion fully updated
** **
Cheers,
Mark
Hi Jan,
What i try to do is animate the (in this case) width. In a simple
description that would be it.
However, i try to animate the with of a component that is within a
Layout. In this case a RowLayout. If i use the width, the RowLayout itself
doesn't update, you can see that in this snippet [1]. Just press the nice
orange square :) What i want for that is to work. I tried animating the
Layout.preferredWidth property because changing the width using that does
update the RowLayout, but then the animation doesn't work.
That's all i'm trying to do.
[1] http://pastebin.kde.org/pxgjxhtza
Another bump.
I haven't figured out a way to make this animated.
Added Jens to the CC. Hopefully he knows a way for this.
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Re: [Interest] How can i animate Layout.preferredWidth and friends?
On Wed, Oct 2, 2013 at 2:25 PM, Mark mark...@gmail.com wrote:
On Wed, Oct 2, 2013 at 11:51 AM, Saether Jan-Arve
jan-arve.saet...@digia.com wrote:
Of course it should not crash.
I get an ASSERT: mo in file qml\qqmlvme.cpp, line 849 (this is with
current stable branch though).
** **
I'm a bit curious to know why do you want to animate that property?
What do you want to achieve?
** **
Jan Arve
** **
*From:* interest-bounces+jan-arve.saether=digia@qt-project.org[mailto:
interest-bounces+jan-arve.saether=digia@qt-project.org] *On Behalf
Of *Mark
*Sent:* 30. september 2013 01:40
*To:* Qt Interest
*Subject:* [Interest] How can i animate Layout.preferredWidth and
friends?
** **
Hi,
** **
I thought something as simple as:
** **
Behavior on Layout.preferredWidth {
NumberAnimation { duration: 1000 }
}
** **
would do.. Apparently not since it crashes qmlscene..
Do i need to do it differently or did i just hit a bug?
** **
Version details:
Qt 5.1.0 x64 (i know, 5.1.1 is out)
Mac Mountain Lion fully updated
** **
Cheers,
Mark
Hi Jan,
What i try to do is animate the (in this case) width. In a simple
description that would be it.
However, i try to animate the with of a component that is within a Layout.
In this case a RowLayout. If i use the width, the RowLayout itself doesn't
update, you can see that in this snippet [1]. Just press the nice orange
square :) What i want for that is to work. I tried animating the
Layout.preferredWidth property because changing the width using that does
update the RowLayout, but then the animation doesn't work.
That's all i'm trying to do.
[1] http://pastebin.kde.org/pxgjxhtza
Another bump.
I haven't figured out a way to make this animated.
___
Interest mailing list
Interest@qt-project.org
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[Interest] How can i animate Layout.preferredWidth and friends?
Hi,
I thought something as simple as:
Behavior on Layout.preferredWidth {
NumberAnimation { duration: 1000 }
}
would do.. Apparently not since it crashes qmlscene..
Do i need to do it differently or did i just hit a bug?
Version details:
Qt 5.1.0 x64 (i know, 5.1.1 is out)
Mac Mountain Lion fully updated
Cheers,
Mark
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Interest mailing list
Interest@qt-project.org
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