tkinter 07 Canvas canvas

•  

  Running result: https://s1.ax1x.com/2018/04/16/Ce7JOK.gif

• # coding=gbk 
  #Image address: https://morvanzhou.github.io/static/results/tkinter/ins.gif #Running 
  result : https://s1.ax1x.com/2018/04/16/Ce7JOK.gif 
  import tkinter as tk
  
  window = tk.Tk()
  window.title('my window')
  window.geometry('200x200')
  
  canvas = tk.Canvas(window, bg='blue', height=100, width=200)#canvas画布
  image_file = tk.PhotoImage(file='ins.gif')
  image = canvas.create_image(10, 10, #Set the position where the image is placed 
                              anchor= ' nw ' , #Use the upper left corner of the image as the anchor point (understood as the origin of coordinates) 
                              image= image_file)
  x0, y0, x1, y1 = 50, 50, 80, 80 
  line = canvas.create_line(x0, y0, x1, y1) #Draw a line 
  oval = canvas.create_oval(x0, y0, x1, y1, fill= ' red ' ) 
  #Drawing a circle # The parameters start=0 and extent=180 are actually from 0 degrees to 180 degrees, just like the side of the fan is open. In our opinion, it is a semi-circle. 
  #If it is changed to extent=90, what we see is a 1/4 circle 
  arc = canvas.create_arc(x0+30, y0+30, x1+30, y1+30, start= 0, extent=180) #Draw an arc 
  rect = canvas.create_rectangle(100, 30, 100+20, 30+20) #Draw a box canvas.pack()
  
  
  #The horizontal coordinate moves by 0 units, and the vertical coordinate moves by 2 units 
  .# Note: the upper left corner is the coordinate origin 
  def moveit():
      canvas.move(rect, 0, 2)
  
  b = tk.Button(window, text='move', command=moveit).pack()
  
  
  window.mainloop ()