- """小小画笔"""
- from tkinter import *
- from tkinter.filedialog import *
- from tkinter.colorchooser import *
- height_root = 450
- width_root = 900
- class Application(Frame):
- def __init__(self, master=None,bgcolors="#000000"):
- super().__init__(master) # super() 代表的是父类的定义, 而不是父类对象
- self.master = master
- self.bgcolors = bgcolors
- self.pack()
- self.createWidget()
- self.x = 0
- self.y = 0
- self.fgcolor = "#ff0000"
- self.lastdrawLine = 0
- self.drawFlag = FALSE
- def createWidget(self):
- #创建画图区域
- self.drawPad = Canvas(root, width=width_root, height=height_root*0.9, bg=self.bgcolors)
- self.drawPad.pack()
- #创建按钮
- btn_start = Button(text="开始", name="start")
- btn_start.pack(side="left",padx=10)
- btn_pen = Button(text="画笔", name="pen")
- btn_pen.pack(side="left", padx=10)
- btn_rect = Button(text="矩形", name="rect")
- btn_rect.pack(side="left", padx=10)
- btn_clear = Button(text="清屏", name="clear")
- btn_clear.pack(side="left", padx=10)
- btn_earsor = Button(text="橡皮差", name="earsor")
- btn_earsor.pack(side="left", padx=10)
- btn_line = Button(text="直线", name="line")
- btn_line.pack(side="left", padx=10)
- btn_lineArrow = Button(text="箭头直线", name="lineArrow")
- btn_lineArrow.pack(side="left", padx=10)
- btn_color = Button(text="颜色", name="color")
- btn_color.pack(side="left", padx=10)
- btn_pen.bind_class("Button", "<1>", self.eventManager)
- self.drawPad.bind("<ButtonRelease-1>", self.drawFlagRelease)
- def eventManager(self,event):
- name = event.widget.winfo_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.myearsor)
- elif name == "clear":
- self.drawPad.delete("all")
- elif name == "color":
- colorpen = askcolor(color="red", title="请选择画笔颜色")
- self.fgcolor = colorpen[1]
- def drawFlagRelease(self,event):
- self.drawFlag = FALSE
- self.lastdrawLine = 0
- def drawStartMove(self,event):
- self.drawPad.delete(self.lastdrawLine)
- if not self.drawFlag:
- self.drawFlag = True
- self.x = event.x
- self.y = event.y
- def myline(self, event):
- self.drawStartMove(event)
- self.lastdrawLine = self.drawPad.create_line(self.x, self.y, event.x, event.y, fill=self.fgcolor)
- def mypen(self, event):
- self.drawStartMove(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 myearsor(self, event):
- self.drawStartMove(event)
- self.drawPad.create_rectangle(event.x-4, event.y-4, event.x+4, event.y+4, fill=self.bgcolors)
- def mylineArrow(self,event):
- self.drawStartMove(event)
- self.lastdrawLine = self.drawPad.create_line(self.x, self.y, event.x,event.y, arrow=LAST, fill=self.fgcolor)
- def myrect(self, event):
- self.drawStartMove(event)
- self.lastdrawLine = self.drawPad.create_rectangle(self.x, self.y, event.x, event.y, outline=self.fgcolor)
- if __name__ == '__main__':
- root = Tk()
- root.geometry(str(width_root)+"x"+str(height_root)+"+200+300")
- root.title("党京伟的一个画笔软件")
- App = Application(master=root)
- root.mainloop()
来源: http://www.bubuko.com/infodetail-3413679.html