Rogério Dec
Elliot Garbus
GridLayout:
rows: 10
cols: 10
Button:
text: '1'
Button:
text: '2'
# ... fill in the buttons.
Button:
text: '100'
As described here (https://stackoverflow.com/questions/54858229/how-can-i-create-a-10x10-button-grid-in-kivy-language), I'd like to know how can I create this 10x10 grid in Kv Language?
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Rogério Dec
Elliot Garbus
There are some things you could do to make it a little less tedious, but it will still be tedious in KV, if you have something so repetitive.
Others may have better suggestions…
You could create a class of 10 buttons and instance it 10 times… if your interested I could type it up – but more importantly I think this is about the right tool for the job.
I use KV for more static elements that are in my GUI layout. I typically will used nested BoxLayouts and GridLayouts to position and customize their appearance. If I have a list of items, or something as repetitive as your 1000 buttons, I would code it in Python (as a class derived from a layout class, and use KV to position this repetitive section into the layout.
I would use KV to define a single button, select the fontsize, color, other attributes that might be unique the button.
I hope this is helpful.
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Gabriel Pettier
Even if you don't want to scroll, but to display them all at the same
time, it's the simplest way to do such thing directly from kv.
from kivy.app import App
from kivy.lang import Builder
KV = '''
FloatLayout:
RecycleView:
data: [{'text': str(x)} for x in range(10 * 10)]
viewclass: 'Button'
RecycleGridLayout:
cols: 10
size_hint: 1, 1
default_size_hint: 1, 1
'''
class Board(App):
def build(self):
return Builder.load_string(KV)
if __name__ == '__main__':
Board().run()
here this example assumes you want to see all 100 widgets, if you want
to increase the number of widget, you probably want to remove the
`default_size_hint` part, because drawing thousands of widgets at the
same time is not a good idea performance-wise, with recycleview, only
the number of visible widgets will be created, and they'll be
transparently reused as you scroll.
from kivy.app import App
from kivy.lang import Builder
KV = '''
FloatLayout:
RecycleView:
data: [{'text': str(x)} for x in range(100 * 100)]
viewclass: 'Button'
RecycleGridLayout:
cols: 100
size_hint: None, None
size: self.minimum_size
default_size: 100, 100
default_size_hint: None, None
'''
class Board(App):
def build(self):
return Builder.load_string(KV)
if __name__ == '__main__':
Board().run()
this will scroll smoothly even if there are 10k theorical widgets,
because only a few dozens of them actually exists, and if you pushed it
to 1000x1000, it would still scroll smoothly, although creating the 1
000 000 of dicts will take some time at startup.