GridspecLayout on click #2942Description
Hi, thanks to the developers for putting this thing together -- it looks awesome!
I have a usage question though. I'm trying to make a layout of plots with NxM rows and columns. Right now I'm prototyping with just buttons. The idea is to be able to expand the layout (i.e. add new panels) by clicking on one of the buttons.
Here's a class I have so far (probably not the best way, but anyway).
import ipywidgets as ipyW
from IPython.display import display
class PlotGrid():
def __init__(self, nn):
self.panels = []
for n in range(nn):
self.createNewPanel(n=n)
self.redraw()
def createNewPanel(self, **kwargs):
button = ipyW.Button(description='Button {}'.format(kwargs['n']),
layout=ipyW.Layout(height='auto', width='auto'))
button.on_click(self.appendGrid)
self.panels.append(button)
def appendGrid(self, status):
self.createNewPanel(n=len(self.panels))
self.redraw()
def redraw(self):
ncols = int(np.sqrt(len(self.panels)))
nrows = int(np.ceil(len(self.panels) / ncols))
self.grid = ipyW.GridspecLayout(nrows, ncols)
n = 0
for i in range(self.grid.n_rows):
for j in range(self.grid.n_columns):
if (n < len(self.panels)):
self.grid[i, j] = self.panels[n]
n += 1
def show(self):
display(self.grid)So when I run this:
plotgrid = PlotGrid(12)
plotgrid.show()it does what it should: fills in the .grid object with panels. When I click on the button the appendGrid function is indeed called, and it does append the new panels to the grid as it should. But for some reason the result is not displayed in the cell: it just remains the same. If I later update the cell by running plotgrid.show() again -- it draws the new extended .grid as it should.
So I think I'm not understanding something fundamental with how the display function works and Jupyter handles the events.
These are the versions of the relevant packages I got through conda:
ipykernel 5.2.0 py38h23f93f0_1 conda-forge
ipython 7.13.0 py38h32f6830_2 conda-forge
jupyterlab 2.1.0 py_0 conda-forge
widgetsnbextension 3.5.1 py38_0 conda-forge