I pared the code down with the same problem, slow to draw lines and freezes at 13 lines. I have running it in both python 3.6 and 3.8 with wxpython 4.1.0 and get the same results. I have also tried it in VS Code and in terminal. Any help would be appreciated
import time
import string
import wx
from wx.lib.floatcanvas import NavCanvas, FloatCanvas
import wx.lib.colourdb
class InputForm(wx.Frame):
'''set up the form and draw axis'''
def __init__(self):
super(InputForm, self).__init__(None, wx.ID_ANY, title='Plot Lines', size=(1300, 830))
# set dictionary of points; key node letter, value tuple of point,
self.pts = {}
self.draw_repetitions = 0
# create the form level sizer
Main_Sizer = wx.BoxSizer(wx.HORIZONTAL)
# add the sizer for the left side widgets
sizerL = wx.BoxSizer(wx.VERTICAL)
# add the grid and then set it ot he left panel
btnsizer = wx.BoxSizer(wx.HORIZONTAL)
drw = wx.Button(self, -1, "Draw\nLines")
btnsizer.Add(drw, 0, wx.ALL|wx.ALIGN_CENTER, 5)
# bind the button events to handlers
self.Bind(wx.EVT_BUTTON, self.OnDraw, drw)
sizerL.Add((10, 20))
sizerL.Add(btnsizer, 1, wx.ALIGN_CENTER)
# add the draw panel
self.rght = NavCanvas.NavCanvas(self,
ProjectionFun=None,
Debug=0,
BackgroundColor="LIGHT GREY",
)
self.Canvas = self.rght.Canvas
self.Canvas.ClearAll()
Main_Sizer.Add(sizerL, 0, wx.EXPAND)
Main_Sizer.Add((10, 10))
Main_Sizer.Add(self.rght, 1, wx.EXPAND)
self.SetSizer(Main_Sizer)
def OnDraw(self, evt):
pts1 = (0, 0)
x = [i for i in range(5, 50, 2)]
y = x[::-1]
pts2 = [(x[i], y[i]) for i in range(0, len(x))]
alph = string.ascii_uppercase
LnLbls = [alph[i] for i in range(0, len(x))]
New_EndPt = True
n = 0
for pt in pts2:
points = []
points.append(pts1)
points.append(pt)
LnLbl = LnLbls[n]
New_EndPt = True
n += 1
self.DrawLine(points, LnLbl, New_EndPt)
def DrawLine(self, points, LnLbl, New_EndPt):
'''Draws the line object as specified in the VarifyData() function'''
self.draw_repetitions += 1
# label the end point of the line in lower case
if New_EndPt is True:
new_end = self.Canvas.AddScaledTextBox(LnLbl.lower(), tuple(points[1]),
Color='black',
Size=.5,
PadSize=.2,
Width=None,
LineColor=None,
Family=wx.MODERN,
Position='cc',
Alignment='bottom',
InForeground=True)
new_end.Bind(FloatCanvas.EVT_FC_LEFT_DOWN,
lambda evt, selctEnd=LnLbl.lower():
self.EvtLeftDown(evt, selctEnd))
# define the new line
self.Canvas.AddLine(points, LineWidth=2, LineColor='red')
# add the new line to the list of lines
self.Canvas.AddPoint(tuple(points[1]), 'black', 8)
# locate the center of the new line for the label location
lncntr = ((int(points[0][0])+int(points[1][0]))//2,
(int(points[0][1])+int(points[1][1]))//2)
# place the new line lable
new_line = self.Canvas.AddScaledTextBox(LnLbl, lncntr,
Color='red',
Size=.5,
PadSize=None,
Width=None,
LineColor=None,
Family=wx.MODERN,
Position='tc',
Alignment='bottom',
InForeground=True)
new_line.Name = LnLbl
tic = time.perf_counter()
new_line.Bind(FloatCanvas.EVT_FC_LEFT_DOWN, self.ObjLeftDown)
toc = time.perf_counter()
print(f'time to execute BIND function for DrawLine line ',LnLbl, toc-tic)
print(f'Draw repetitions ',self.draw_repetitions)
# wx.CallAfter(self.Canvas.ZoomToBB)
self.Canvas.ZoomToBB()
def ObjLeftDown(self, object):
lbl = object.Name
print('you have selected line ', lbl)
def EvtLeftDown(self, evt, lbl):
if lbl == 'Origin':
print('you have selected the origin')
elif 97 <= ord(lbl) <= 122:
print('you have selected node ', lbl)
# Run the program
if __name__ == "__main__":
app = wx.App(False)
frame = InputForm()
frame.Center()
frame.Show()
app.MainLoop()
