Day29 用python写UI-聊聊Canvas(一)

终於进入最好玩的主题了，canvas就是可以在介面上做图形出来，赶快滑下去看吧~~~

♠♣今天的文章大纲♥♦

建立画布
文字输出
背景颜色
影像插入
滑鼠绘制

建立画布

import tkinter as tk
root=tk.Tk()
root.title('cuteluluWindow')
root.configure(bg="#7AFEC6")
root.iconbitmap('heart_green.ico')

canvas=tk.Canvas(root,width=300,height=300)
canvas.pack()

root.mainloop()

执行结果⬇⬇⬇

背景颜色

canvas=tk.Canvas(root,width=300,height=300,bg="#DCB5FF")

执行结果⬇⬇⬇

文字输出

canvas.create_text(150,50,text="This is my canva.",font=("Algerian",20,"bold"),fill="#6F00D2")

执行结果⬇⬇⬇

影像插入

import tkinter as tk
from PIL import Image,ImageTk
root=tk.Tk()
root.title('cuteluluWindow')
root.configure(bg="#7AFEC6")
root.iconbitmap('heart_green.ico')

img=Image.open("pinksky.jpg")
photo=ImageTk.PhotoImage(img)

canvas=tk.Canvas(root,width=700,height=500,bg="#DCB5FF")
canvas.pack()
canvas.create_image(250,150,image=photo)
canvas.pack(expand=True)

root.mainloop()

执行结果⬇⬇⬇

滑鼠绘制

import tkinter as tk

root=tk.Tk()
root.title('cuteluluWindow')
root.configure(bg="#7AFEC6")
root.iconbitmap('heart_green.ico')

def paint(event):
    x1,y1=(event.x,event.y)
    x2,y2=(event.x,event.y)
    canvas.create_oval(x1,y1,x2,y2,fill="yellow")

def clear():
    canvas.delete("all")

canvas=tk.Canvas(root,width=700,height=500,bg="#DCB5FF")
canvas.pack()

btn=tk.Button(root,text="Clear",command=clear)
btn.pack(pady=10)

canvas.bind("<B1-Motion>",paint)

canvas.mainloop()

执行结果⬇⬇⬇