今天进行了Python大作业可视化界面设计器的部分编写，以下代码为画图的功能，以及调节笔刷大小的功能
import tkinter as tk
from tkinter import filedialog, messagebox, colorchooser, simpledialog
class LoginWindow:
def __init__(self, root):
self.root = root
self.root.title("Login")
self.root.geometry("300x150")
self.root.config(bg="#f0f0f0")
self.username_label = tk.Label(self.root, text="Username:", bg="#f0f0f0")
self.username_label.pack(pady=5)
self.username_entry = tk.Entry(self.root)
self.username_entry.pack(pady=5)
self.password_label = tk.Label(self.root, text="Password:", bg="#f0f0f0")
self.password_label.pack(pady=5)
self.password_entry = tk.Entry(self.root, show="*")
self.password_entry.pack(pady=5)
self.login_button = tk.Button(self.root, text="Login", command=self.login)
self.login_button.pack(pady=5)
def login(self):
username = self.username_entry.get()
password = self.password_entry.get()
if username == "123456" and password == "123456":
self.root.destroy()
app = GUIEditor(tk.Tk())
else:
messagebox.showerror("Error", "Invalid username or password")
class GUIEditor:
def __init__(self, root):
self.root = root
self.root.title("GUI Editor")
self.root.geometry("600x500")
self.root.config(bg="#f0f0f0")
self.canvas = tk.Canvas(self.root, bg="white", width=400, height=400, bd=2, relief=tk.SOLID)
self.canvas.pack(pady=20)
self.shape = None
self.start_x = None
self.start_y = None
self.draw_type = tk.StringVar()
self.draw_type.set("rectangle")
self.color = "black"
self.brush_size = tk.IntVar()
self.brush_size.set(2)
self.eraser_size = tk.IntVar()
self.eraser_size.set(2)
toolbar_frame = tk.Frame(self.root, bg="#f0f0f0")
toolbar_frame.pack(fill=tk.X, padx=10, pady=10)
self.rectangle_button = tk.Radiobutton(toolbar_frame, text="Rectangle", variable=self.draw_type,
value="rectangle", bg="#f0f0f0", command=self.set_draw_type)
self.rectangle_button.pack(side=tk.LEFT, padx=10)
self.circle_button = tk.Radiobutton(toolbar_frame, text="Circle", variable=self.draw_type, value="circle",
bg="#f0f0f0", command=self.set_draw_type)
self.circle_button.pack(side=tk.LEFT, padx=10)
self.triangle_button = tk.Radiobutton(toolbar_frame, text="Triangle", variable=self.draw_type, value="triangle",
bg="#f0f0f0", command=self.set_draw_type)
self.triangle_button.pack(side=tk.LEFT, padx=10)
self.line_button = tk.Radiobutton(toolbar_frame, text="Line", variable=self.draw_type, value="line",
bg="#f0f0f0", command=self.set_draw_type)
self.line_button.pack(side=tk.LEFT, padx=10)
self.brush_button = tk.Radiobutton(toolbar_frame, text="Brush", variable=self.draw_type, value="brush",
bg="#f0f0f0", command=self.set_draw_type)
self.brush_button.pack(side=tk.LEFT, padx=10)
self.eraser_button = tk.Radiobutton(toolbar_frame, text="Eraser", variable=self.draw_type, value="eraser",
bg="#f0f0f0", command=self.set_draw_type)
self.eraser_button.pack(side=tk.LEFT, padx=10)
self.color_button = tk.Button(toolbar_frame, text="Color", command=self.choose_color)
self.color_button.pack(side=tk.LEFT, padx=10)
self.brush_size_label = tk.Label(toolbar_frame, text="Brush Size:", bg="#f0f0f0")
self.brush_size_label.pack(side=tk.LEFT, padx=10)
self.brush_size_scale = tk.Scale(toolbar_frame, from_=1, to=10, orient=tk.HORIZONTAL, variable=self.brush_size,
bg="#f0f0f0", command=self.set_brush_size)
self.brush_size_scale.pack(side=tk.LEFT, padx=5)
self.eraser_size_label = tk.Label(toolbar_frame, text="Eraser Size:", bg="#f0f0f0")
self.eraser_size_label.pack(side=tk.LEFT, padx=10)
self.eraser_size_scale = tk.Scale(toolbar_frame, from_=1, to=10, orient=tk.HORIZONTAL, variable=self.eraser_size,
bg="#f0f0f0", command=self.set_eraser_size)
self.eraser_size_scale.pack(side=tk.LEFT, padx=5)
self.canvas.bind("<Button-1>", self.on_click)
self.canvas.bind("<B1-Motion>", self.on_drag)
self.canvas.bind("<ButtonRelease-1>", self.on_release)
self.menu = tk.Menu(self.root)
self.root.config(menu=self.menu)
self.file_menu = tk.Menu(self.menu, tearoff=False)
self.menu.add_cascade(label="File", menu=self.file_menu)
self.file_menu.add_command(label="Save", command=self.save_as_python)
def on_click(self, event):
self.start_x = event.x
self.start_y = event.y
def on_drag(self, event):
if self.draw_type.get() == "brush":
self.canvas.create_line(self.start_x, self.start_y, event.x, event.y, fill=self.color,
width=self.brush_size.get())
self.start_x = event.x
self.start_y = event.y
elif self.draw_type.get() == "eraser":
self.canvas.create_line(self.start_x, self.start_y, event.x, event.y, fill="white",
width=self.eraser_size.get())
elif self.draw_type.get() in ["rectangle", "circle", "line"]:
if self.shape:
self.canvas.delete(self.shape)
if self.draw_type.get() == "rectangle":
self.shape = self.canvas.create_rectangle(self.start_x, self.start_y, event.x, event.y,
outline=self.color, width=self.brush_size.get())
elif self.draw_type.get() == "circle":
self.shape = self.canvas.create_oval(self.start_x, self.start_y, event.x, event.y,
outline=self.color, width=self.brush_size.get())
elif self.draw_type.get() == "line":
self.shape = self.canvas.create_line(self.start_x, self.start_y, event.x, event.y,
fill=self.color, width=self.brush_size.get())
elif self.draw_type.get() == "triangle":
if self.shape:
self.canvas.delete(self.shape)
self.shape = self.canvas.create_polygon(self.start_x, self.start_y,
event.x, event.y,
self.start_x - (event.x - self.start_x),
event.y,
outline=self.color, width=self.brush_size.get())
def on_release(self, event):
self.shape = None
def set_draw_type(self):
if self.draw_type.get() in ["rectangle", "circle", "triangle"]:
self.canvas.config(cursor="tcross")
else:
self.canvas.config(cursor="arrow")
def choose_color(self):
color = colorchooser.askcolor(title="Choose color")
if color[1]:
self.color = color[1]
def set_brush_size(self, size):
pass
def set_eraser_size(self, size):
标签：draw,root,self,学习,6.6,进度,type,tk,size From： https://www.cnblogs.com/lijianlongCode13/p/18247309