Hi Aaron,
hope you had a good Easter.
Thanks again for the example! It makes total sense I and kinda should
have known that myself by now ;).
I am now wondering if it's maybe best to create a dictionary that holds
the buttons as keys and the respective pages as values. Would anything
speak against that approach?
I also have a couple of questions about your code changes (just want to
understand things properly and learn the best practices):
in line 101, why are you using xrange to loop through the list items
rather than the straight forward approach of cycling through the list's
contents? Is this faster? You have to sort the list twice this way and
the code seems less intuitive, so I'm just wondering about the benefits.
in line 106 you added "self" to the QPushButton's arguments, even though
the button gets added into a layout that is already parented to the
widget, so the button becomes a descendent of "self" automatically,
right?! At least that's how I understood the documentation.
Thanks again for your fantastic help, it's invaluable for me right now!!
Cheers,
frank
On 4/10/12 9:07 PM, Aaron Richiger wrote:
Hello Frank!
Easter is over, so it's time to code... Passing a variable to a lambda
function multiple times in a loop does not work here. So, the only
thing I changed in your code was: Connect the clicked event of the
buttons with a method without parameters and therefore write a wrapper
"pageChangeRequest()" to evaluate the clicked button, the
corresponding page and finally change the page in the animator. You
can see your modified code here:
http://pastebin.com/Mzd8minm
Evaluating the sender of a signal with self.sender() was helpful for
me quite often, but always keep in mind, that this only works in
classes derived from QObject (which is the case in your code, since
your ToolBrowser is inheriting from QWidget). So you always have to
work with classes when using this functionality.
Happy coding!
aaron
Hi Aaron,
I've modified your example code in an attempt to make it dynamic
based on a given data set.
The data is a nested dictionary of this form:
data = dict(
containerA= (
dict(CatAA=['A1', 'B1', 'C1'],
CatAB=['A2', 'B2', 'C2'],
CatAC=['A3', 'B3', 'C3'])),
containerB= (
dict(CatBA=['A4', 'B4', 'C4'],
CatBB=['A5', 'B5', 'C5'],
CatBC=['A6', 'B6', 'C6'])),
containerC= (
dict(CatCA=['A7', 'B7', 'C7'],
CatCB=['A8', 'B8', 'C8'],
CatCC=['A9', 'B9', 'C9'])))
I now have to create buttons dynamically based on how the containers
and categories in this data set (and eventually figure out how to
also take the categories' contents into account and generate buttons
for those as well, which can be controlled by Animator instance).
At the moment I'm running into the problem that when I create an
instance of a "WidgetPage" inside a loop and hand it over to your
Animator (see line 113), the bindings go all wrong of course and the
pages all end up at the same memory address, thus overwriting each other.
I tried copy.deepcopy (see line 111) but that seems to barf with
class instances.
Here is my full code:
http://pastebin.com/txzstwJV
Any ideas?
Cheers and thanks again for this awesome example!
frank
On 4/8/12 6:13 AM, Aaron Richiger wrote:
Thanks Juande for pointing this out. Fixed it in the following
version at pastebin:
Only one page visible:
http://pastebin.com/kP1rdLHx
Good luck with finding the eggs!
Hi Aaron,
Pretty cool your solutions!
Just a comment about animated_widgets_with_only_one_widget, there
is an visibility issue when window is resize.
Happy Easter!
Juande
Hello Frank!
I slightly changed my code to your new informations and added
comments for better understanding;-)! I also changed the sorting
method to show you a possibility to separe checked from unchecked
checkboxes. Because I first thought, that multiple pages must be
visible at once, I created two versions, but according to your
mail, the second possibility will meet your requirements closer I
guess. But the multi-version might be interesting for others:
Mutliple pages visible:
http://pastebin.com/hW0zeL4P
Only one page visible:
http://pastebin.com/cjn0UuA9
Easter-greetings
Am 07.04.2012 01:51, schrieb Frank Rueter | OHUfx:
I agree, it does seem off, which is why I'm throwing it out here
to get some ideas on how to tackle this from more experienced peeps.
I will try to clarify what I'm after:
The idea is to have a collection of buttons per category, let's
say a "page" of buttons. When the category is chosen via the
buttons on the left, the requested page with buttons slides into
view pushing the current one out of view. It's like an animated
toolbox.
I like your suggestion, will investigate.
Cheers,
frank
On 6/04/12 11:31 PM, Sebastian Elsner wrote:
This Approach seems really off, Frank. I am not really getting
what you want to do, maybe you can give us the specific purpose
of this... What I could imagine is using a QScrollArea, which
makes a QGridLayout scrollable.
Am 06.04.2012 09:13, schrieb Frank Rueter | OHUfx:
yes, I think I'm starting to get it, thanks.
So here is a very rough and ugly test using a single animated
table (feel free to laugh):
http://pastebin.com/PbZ8ismH
I am trying to see if it's feasible to stuff all my widgets
into one big table, then animate the table's position so that
only the requested column(s) are within the view according to
which button is pushed on the left hand side. Obviously I'd
have to hide the headers and lines etc. (no idea how to do that
yet either).
What do people think how best to approach this? The above
doesn't feel right and I'd have to do a lot of hacking to make
this look pretty (though the animation is easy to control as
it's just one widget). Or should I rather create one table per
button and move them around as a group (I guess I could hide
the unwanted tables as well then).
Or does anyone have completely different ideas how to tackle
this? I'm sure there is a way more elegant solution.
I'm still trying to stick to default QT stuff before I dive
into Qt Quick and such.
Thanks for all the help and pointers so far!
frank
On 4/6/12 6:28 PM, Tibold Kandrai wrote:
Hi!
Exactly! Instead of QAnimationGroup you have to use
QParallelAnimationGroup
<http://qt-project.org/doc/qt-4.8/qparallelanimationgroup.html>orQSequentialAnimationGroup
<http://qt-project.org/doc/qt-4.8/qsequentialanimationgroup.html>.
Or you can create your own group by subclassing
QAnimationGroup if you have special needs. :)
Cheers,
Tibold
On 06/04/2012 06:45, Frank Rueter | OHUfx wrote:
I think I found the problem in the fact that it's an abstract
class and not meant to be used directly.
the joy of learning new stuff....
On 4/6/12 4:05 PM, Frank Rueter | OHUfx wrote:
Thanks again for this tip Tibold. It seems to be what I'm
after, though I just discovered that QAnimationGroup doesn't
seem to be supported in PySide. I got this error when I
tried to create an instance of it:
NotImplementedError: 'QAnimationGroup' represents a C++
abstract class and cannot be instantiated
I will try and add all widgets to one "page" widget
(whatever that may be, I need to find out yet), and then
apply the animation to that.
Fingers crossed...
Cheers,
frank
On 4/4/12 7:29 PM, Tibold Kandrai wrote:
Hey!
Try QtAnimation:
http://qt-project.org/doc/qt-4.8/animation-overview.html
I use it with in a QGraphicsWidget, but this should work everywhere AFAIR.
Cheers,
Tibold
On 04/04/2012 06:46, Frank Rueter | OHUfx wrote:
Hi everyone,
I'm very new to Qt/PySide and am wondering if it's possible to add an
animation effect to, let's say, QStackedLayout, for when the page
changes. I guess it'd something similar to the way the AppStore works.
In this example I'd like to see the new button "push" the old button out
of view when the combobox changes:
http://pastebin.com/i5sFgQzE
I'm happy to take a good ol' fashioned RTFM, I'm just having a hard time
finding the right bit of information out there.
Any help would be greatly appreciated.
Cheers,
frank
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Tibold Kandrai,
CEO @ Dotz Team I/S,
Software developer, consultant
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