简易画图
""" 开发画图软件 """ # -*- coding：utf-8 -*- from tkinter import * from tkinter.colorchooser import * from tkinter.filedialog import * from tkinter.messagebox import * # 窗口的宽度和高度 win_width = 900 win_height = 450 class Application(Frame): def __init__(self,master=None,bgcolor="#000000"): super().__init__(master) self.master = master self.bgcolor = bgcolor self.x = 0 self.y = 0 self.fgcolor = "#ff0000" self.lastDraw = 0 self.startDrawFlag = False self.pack() self.createWidget() def createWidget(self): # 创建绘图区 self.drawpad = Canvas(root, width=win_width, height=win_height*0.9, bg=self.bgcolor) self.drawpad.pack() btn_start = Button(root, text="开始", name="start") btn_start.pack(side='left', padx=10) btn_pen = Button(root, text="画笔", name="pen") btn_pen.pack(side='left',padx=10) btn_rect = Button(root, text="矩形", name="rect") btn_rect.pack(side='left',padx=10) btn_clear = Button(root, text="清屏", name="clear") btn_clear.pack(side='left',padx=10) btn_earsor = Button(root, text="橡皮擦", name="earsor") btn_earsor.pack(side='left',padx=10) btn_line = Button(root, text="直线", name="line") btn_line.pack(side='left',padx=10) btn_lineArrow = Button(root, text="箭头直线", name="lineArrow") btn_lineArrow.pack(side='left',padx=10) btn_color = Button(root, text="颜色", name="color") btn_color.pack(side='left',padx=10) # 事件处理 btn_rect.bind_class("Button", "<1>", self.eventManager) self.drawpad.bind("<ButtonRelease-1>", self.stopDraw) # 增加颜色切换的快捷键 root.bind("<KeyPress-r>", self.kuaijiejian) root.bind("<KeyPress-g>", self.kuaijiejian) root.bind("<KeyPress-y>", self.kuaijiejian) def eventManager(self, event): name = event.widget.winfo_name() print(name) if name == "line": self.drawpad.bind("<B1-Motion>", self.myline) elif name == "lineArrow": self.drawpad.bind("<B1-Motion>", self.mylineArrow) elif name == "rect": self.drawpad.bind("<B1-Motion>", self.myRect) elif name == "pen": self.drawpad.bind("<B1-Motion>", self.myPen) elif name == "earsor": self.drawpad.bind("<B1-Motion>", self.myErasor) elif name == "clear": self.drawpad.delete("all") elif name == "color": c = askcolor(color=self.fgcolor, title="选择画笔颜色") # [(255,0,0),"#ff0000"] self.fgcolor = c[1] def stopDraw(self, event): self.startDrawFlag = False self.lastDraw = 0 def startDraw(self,event): self.drawpad.delete(self.lastDraw) if not self.startDrawFlag: self.startDrawFlag = True self.x = event.x self.y = event.y def myline(self, event): self.startDraw(event) self.lastDraw= self.drawpad.create_line(self.x,self.y,event.x,event.y, fill=self.fgcolor) def mylineArrow(self, event): self.startDraw(event) self.lastDraw =self.drawpad.create_line(self.x, self.y, event.x, event.y, arrow=LAST, fill=self.fgcolor) def myRect(self, event): self.startDraw(event) self.lastDraw =self.drawpad.create_rectangle(self.x, self.y, event.x, event.y, outline=self.fgcolor) def myPen(self, event): self.startDraw(event) self.drawpad.create_line(self.x, self.y, event.x, event.y, fill=self.fgcolor) self.x = event.x self.y = event.y def myErasor(self, event): self.startDraw(event) self.drawpad.create_rectangle(event.x-4, event.y-4, event.x + 4, event.y + 4, fill=self.bgcolor) self.x = event.x self.y = event.y def kuaijiejian(self, event): if event.char == "r": self.fgcolor = "#ff0000" elif event.char == "g": self.fgcolor = "#00ff00" elif event.char == "y": self.fgcolor = "#ffff00" if __name__ == '__main__': root = Tk();root.geometry(str(win_width)+"x"+str(win_height)+"+200+300") root.title("Mr_huang的简易画图板") app = Application(master=root) root.mainloop() 文章来源: https://blog.csdn.net/weixin_44342108/article/details/96718485