rowspan/colspan in Grid Layout

[Alexey Smishlayev]

Hello!
I would like to have rowspan/colspan behavior in my application. As I can see, Kivy does not support this. Is it possible to implement similar mechanics in extended GridLayout class?

Cheers, Alexey

[Gabriel Pettier]

Hi

I did a quick example of one way to do it recently

https://gist.github.com/tshirtman/5003739

cheers, Gabriel

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[Alexey Smishlayev]

Hello,
Very nice exaple, thank you for helping out!

Cheers

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[Alexey Smishlayev]

Hello!
How do i reproduce the part

        # let's rowspan 2
        Widget:
            Button:
                y: placeholder1.y
                x: self.parent.x
                width: self.parent.width
                height: self.parent.height + placeholder1.height
                text: '='
                on_press: app.calc(calc)

in the Python code? I have tried

button = Button(text="=")
widget = Widget()
widget.add_widget(button)
button.x = button.parent.x
button.y = button.parent.y
button.height = button.parent.height
button.width = button.parent.width

But the Button is still hanging around in the corner :(

Best regards,
Alexey

[Gabriel Pettier]

Hi

Yes, if you do it this way, the positions of the widget you just created
aren't computed yet, so your new button will have the default values,
i.e: no changes.

So you need to bind these values to the values of the original, instead
of just copying, something like.

widget.bind(pos=button.setter('pos'))
widget.bind(size=button.setter('size'))

so when widget.pos or widget.size changes (here, it will at least change
just after this frame), button's properties are adapted to these new
values.

This is a reason for kv to exist, it makes things easier.

cheers.

[Alexey Smishlayev]

Yes, of course! Forgot, that they are all properties. Coding at night was probably not the best idea (:

Thank you, Gabriel.

Yes, I agree, kv language improves widgets' code read/write-ability, but currently I am working on a subclass of GridLayout, to implement support for rowspan/colspan widget attributes. So have to do it in Python (:

Best regards,
Alexey

[200...@gmail.com]

Hi there, thanks for the example. It is possible to do this for buttons, but could you do something like this if you wanted to span a label across multiple columns and rows?

 

Thanks.

[Alexey Smishlayev]

Hello!

Two years ago I implemented GridLayout sublass, which accepts rowspan/colspan properties for nested widgets. I can't tell you much about the realization now, as I don't remember, but here is the code for my layout.py module: http://pastebin.com/tsc5KTMB and here is a local ".widgets" module: http://pastebin.com/7P0kEVLw

Regards, Alexey

[200...@gmail.com]

Thank you very much Alexey, very useful :)