63 lines
1.5 KiB
Python
63 lines
1.5 KiB
Python
from fractions import Fraction as ratio
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from tkinter import *
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from PIL import Image
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from PIL.ImageTk import PhotoImage
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class App:
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'''
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A canvas with scrolling support.
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'''
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def __init__(self, master=None, *canvas_args, **canvas_kw):
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frame = self.frame = Frame(root, bg='green')
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frame.rowconfigure(0, weight=1)
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frame.columnconfigure(0, weight=1)
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C = self.canvas = Canvas(frame, *canvas_args, **canvas_kw)
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scrollY = self.scrollY = Scrollbar(
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frame,
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orient=VERTICAL,
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command=C.yview,
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)
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C['yscrollcommand'] = scrollY.set
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scrollX = self.scrollX = Scrollbar(
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frame,
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orient=HORIZONTAL,
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command=C.xview,
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)
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C['xscrollcommand'] = scrollX.set
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C.grid(row=0, column=0, sticky=N+S+E+W)
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scrollY.grid(row=0, column=1, sticky=N+S)
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scrollX.grid(row=1, column=0, sticky=E+W)
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C.bind("<Configure>", self.handle_canvas_resize)
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def handle_canvas_resize(self, event):
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print(event)
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from random import randint, expovariate
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width, height = 10240, 7680
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root = Tk()
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app = App(root, bg='black', scrollregion=(0, 0, width, height))
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app.frame.pack(expand=True, fill=BOTH)
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for _ in range(1000):
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x, y = randint(0, width - 1), randint(0, height - 1)
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#radius = randint(2, 10) // 2
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radius = round(1 + expovariate(1))
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app.canvas.create_oval(
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x - radius, y - radius,
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x + radius, y + radius,
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fill='yellow',
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)
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