[pygtk] Disable signals and events to use a button as a container, not as a button?
Ryan Martin
rmartin at ilm.com
Wed Sep 9 01:54:00 WST 2009
Hey Guys
For all intensive purposes, an eventBox can have widgets packed into it
as I need and it can also have the background set as a style property
ala "bg_pixmap[NORMAL] = 'something.png'". My problem is that the
background needs to stretch, not tile. Like this:
http://www.ensomniac.com/pygtk/button_example3.jpg
When looking at the image above, please consider that I need to pack
widgets inside the blue graphic area. That is why I need to use some
form of container. I can't use an image widget, I can't use anything
that won't let me pack widgets inside the graphic area.
The reason I initially decided to go with a button was because I knew I
could skin it (it has advanced skinning functionality allowing you to
stretch the pixmap while leaving the borders of the graphic intact) and
it could act as a container for other widgets. The problem with using a
button is that each time you hover over the main container button, it
steals all of the events that I want to go to the child widgets. My
initial post was looking for ideas on how I could disable the main
button from events and just use it as a graphic container for my child
widgets which would still need to work as expected. This has proven to
be impossible?
Then you guys suggested using something else, like an eventBox. That's
fine, but as I pointed out above, I can't stretch my pixmap (to my
knowledge) it tiles by default. Since the widget container needs to be
dynamic, it will be changing in size and must look good as it repacks
and resizes (again, a button as a container is exactly what I need).
Here were my problems with using a button as a container (as opposed to
an eventBox):
http://www.ensomniac.com/pygtk/button_example2.jpg
http://www.ensomniac.com/pygtk/button_example.jpg
Another type of container that I have considered is a frame widget. A
frame widget would also be ideal because the outer borders can be
skinned and it acts as a normal gtk container widget. The problem is
that you can only skin the borders, there is no background function. I
could pack an eventBox into the frame and skin that, but then i'm back
to my same problem above where the texture would tile and not stretch.
Does this clear up my intentions?
Thanks for the support
Ryan
John Finlay wrote:
> Ryan Martin wrote:
>> Hey John,
>> Thanks for the response. Yes, technically that would work, except
>> that you can't stretch the background of an event box. It only tiles.
>> As the style is applied to other sized event boxes, the background
>> texture would not stretch and resize.
>>
>> If anybody knows a way to make the background pixmap for an event box
>> stretch, I'd be all set. Any ideas?
>>
>> Thanks
>> Ryan
>>
>>
>>
> What do you mean by stretch and resize? An example would help to
> visualize how this would work.
>>
>>
>>
>>
>>
>> John Finlay wrote:
>>> Have you tried using an eventbox inside the frame to hold the vbox
>>> that holds the other stuff? I believe that the purpose of the
>>> eventbox is to do just the kind of thing you want i.e. set the
>>> bg_pixmap for the eventbox to some custom pixmap that represents
>>> your style.
>>>
>>> John
>>>
>>> Ryan Martin wrote:
>>>> That's a good question. I didn't explain why I needed to do this
>>>> because I thought I'd confuse more. In the software I'm writing,
>>>> I'm combining theme elements with some widget tricks to accomplish
>>>> a visual task that I don't know is possible by any other means.
>>>>
>>>> I need to have a container than I can 'skin' that can contain other
>>>> widgets. My initial thought was to theme gtk.Frame to have borders
>>>> and a background (like a button), and I can pack all of my widgets
>>>> into that. Unfortunately, to my knowledge, you can't have a
>>>> background on a frame widget. So I started cycling through other
>>>> gtk widgets to see if there was some sort of container that I could
>>>> theme, but was unable to find something that worked.
>>>>
>>>>
>>>> (http://www.ensomniac.com/pygtk/button_example2.jpg)
>>>>
>>>> That led me to my latest theory, that if I were able to use a
>>>> button as a container, I could theme gtk.Button to get the visual
>>>> style I wanted, but also the functionality of having the widgets
>>>> inside. I would need to disable the core button (container) from
>>>> receiving and processing signals, but somehow pass them on to any
>>>> of the widgets inside the button:
>>>>
>>>>
>>>> (http://www.ensomniac.com/pygtk/button_example.jpg)
>>>>
>>>> And that leaves me where I'm at now. The following code will
>>>> disable my base button from working:
>>>> *print* self.widgets.main_container_button.get_property("above-child")
>>>> >> *False**
>>>> print*
>>>> self.widgets.main_container_button.set_property("above-child", True)
>>>> *print* self.widgets.main_container_button.get_property("above-child")
>>>> >> *True*
>>>> But I have no idea how to pass the events to the widgets that are
>>>> children of the button (the 'button_2' widget and the "entry"
>>>> widget in the image above).
>>>>
>>>> If there is some other way to accomplish my task, I'm all ears.
>>>> Currently, I'm struggling trying to get my events passed to the
>>>> child widgets.
>>>>
>>>>
>>>> Thanks for the help!
>>>>
>>>> Ryan
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> John Finlay wrote:
>>>>> Ryan Martin wrote:
>>>>>> Hey Guys,
>>>>>> I have a strange situation that I'm having trouble finding a
>>>>>> solution for. In the application I'm building, I would like to
>>>>>> use a button as a container and not necessarily a button.
>>>>>> Currently, I have a text field and another button inside my main
>>>>>> button in question. What I would like is to disable all of the
>>>>>> innate callbacks (prelight/hover, clicked, etc.) on that main
>>>>>> button and just have it sit there while still being able to click
>>>>>> the child button inside the main button or enter text into the
>>>>>> text field.
>>>>>>
>>>>>> One thing to consider is that I need to disable callbacks on the
>>>>>> main button but not on any of the widgets that are added to the
>>>>>> main button as a child.
>>>>>>
>>>>>> Is this possible? Did that make sense?
>>>>>>
>>>>>> Any help would be greatly appreciated. I have scoured through old
>>>>>> threads looking for clues.
>>>>> Why do you need to use a button as a container when you don't want
>>>>> to use any of the button's features? Are there no GTK containers
>>>>> that work?
>>>>>
>>>>> John
>>>>>
>>>>
>>>> --
>>>> Ryan Martin
>>>> *Industrial Light + Magic
>>>> *Assistant Technical Director
>>>> cell: 973-632-1417 / desk: 415-746-2117
>>>>
>>>> *
>>>> *
>>>
>>>
>>
>> --
>> Ryan Martin
>> *Industrial Light + Magic
>> *Assistant Technical Director
>> cell: 973-632-1417 / desk: 415-746-2117
>>
>> *
>> *
>> ------------------------------------------------------------------------
>>
>> _______________________________________________
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>> http://www.daa.com.au/mailman/listinfo/pygtk
>> Read the PyGTK FAQ: http://faq.pygtk.org/
>
>
--
Ryan Martin
*Industrial Light + Magic
*Assistant Technical Director
cell: 973-632-1417 / desk: 415-746-2117
*
*
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