59 lines
1.6 KiB
Python
59 lines
1.6 KiB
Python
|
import tkinter
|
||
|
|
|
||
|
|
class TKDraw():
|
||
|
|
def __init__(self):
|
||
|
|
self.windowtitle = 'Tkdraw'
|
||
|
|
|
||
|
|
self.ismousedown = False
|
||
|
|
self.minwidth = 1
|
||
|
|
self.maxwidth = 5
|
||
|
|
|
||
|
|
self.t = tkinter.Tk()
|
||
|
|
self.t.title(self.windowtitle)
|
||
|
|
self.w = 450
|
||
|
|
self.h = 350
|
||
|
|
self.screenwidth = self.t.winfo_screenwidth()
|
||
|
|
self.screenheight = self.t.winfo_screenheight()
|
||
|
|
self.windowwidth = self.w
|
||
|
|
self.windowheight = self.h
|
||
|
|
self.windowx = (self.screenwidth-self.windowwidth) / 2
|
||
|
|
self.windowy = ((self.screenheight-self.windowheight) / 2) - 27
|
||
|
|
self.geometrystring = '%dx%d+%d+%d' % (self.windowwidth, self.windowheight, self.windowx, self.windowy)
|
||
|
|
self.t.geometry(self.geometrystring)
|
||
|
|
|
||
|
|
self.canvas = tkinter.Canvas(self.t, bg='#000')
|
||
|
|
self.canvas.pack(expand=True, fill='both')
|
||
|
|
#print(help(self.canvas.bind))
|
||
|
|
self.canvas.bind('<ButtonPress>', self.mousedown)
|
||
|
|
self.canvas.bind('<ButtonRelease>', self.mouseup)
|
||
|
|
self.canvas.bind('<Motion>', self.mousedraw)
|
||
|
|
self.prevx = None
|
||
|
|
self.prevy = None
|
||
|
|
|
||
|
|
def mainloop(self):
|
||
|
|
self.t.mainloop()
|
||
|
|
|
||
|
|
def mousedown(self, *b):
|
||
|
|
self.ismousedown = True
|
||
|
|
|
||
|
|
def mouseup(self, *b):
|
||
|
|
self.ismousedown = False
|
||
|
|
self.prevx = None
|
||
|
|
self.prevy = None
|
||
|
|
|
||
|
|
def mousedraw(self, event):
|
||
|
|
if self.ismousedown is False:
|
||
|
|
return
|
||
|
|
x = event.x
|
||
|
|
y = event.y
|
||
|
|
if self.prevx is not None:
|
||
|
|
distance = ((self.prevx - x)**2) + ((self.prevy - y) ** 2)
|
||
|
|
distance = distance ** 0.5
|
||
|
|
distance = max(self.minwidth, distance)
|
||
|
|
distance = min(self.maxwidth, distance)
|
||
|
|
self.canvas.create_line(self.prevx, self.prevy, x, y, width=distance, fill='#fff')
|
||
|
|
self.prevx = x
|
||
|
|
self.prevy = y
|
||
|
|
|
||
|
|
tkd = TKDraw()
|
||
|
|
tkd.mainloop()
|