python实现画图工具

简易画图工具(Python)，供大家参考，具体内容如下

小黑最近在努力的入门python，正好学习到了Python的tkinker模块下的Canvas(画布)和Button(按钮)再加上相应的事务管理，实现了一个简单的画图小工具。

程序代码

#画图软件的实现from tkinter.filedialog import *from tkinter import *from tkinter.colorchooser import *win_width=900win_height=450class 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 #表示最后绘制的图形的id self.startDrawFlag=False self.pack() self.createWidget()def createWidget(self): # 创建画板 self.drawCad=Canvas(self,width=win_width,height=win_height*0.9,bg=self.bgcolor) self.drawCad.pack() # 创建按钮 btn_start = Button(self,text='开始',name='start') btn_start.pack(side='left',padx=10) btn_pen = Button(self, text='画笔', name='pen') btn_pen.pack(side='left', padx=10) btn_rect = Button(self, text='矩形', name='rect') btn_rect.pack(side='left', padx=10) btn_clear = Button(self, text='清屏', name='clear') btn_clear.pack(side='left', padx=10) btn_earsor = Button(self, text='橡皮擦', name='earsor') btn_earsor.pack(side='left', padx=10) btn_line = Button(self, text='直线', name='line') btn_line.pack(side='left', padx=10) btn_lineArrow = Button(self, text='箭头直线', name='lineArrow') btn_lineArrow.pack(side='left', padx=10) btn_color = Button(self, text='颜色', name='color') btn_color.pack(side='left', padx=10) #为按钮绑定事件 btn_pen.bind_class('Button','<1>',self.eventManger) self.drawCad.bind('<ButtonRelease-1>',self.stopDraw)def eventManger(self,event): name=event.widget.winfo_name() print(name) if name=='line' : self.drawCad.bind('<B1-Motion>',self.myline) elif name=='lineArrow': self.drawCad.bind('<B1-Motion>', self.mylineArrow) elif name=='rect': self.drawCad.bind('<B1-Motion>', self.myRect) elif name=='pen': self.drawCad.bind('<B1-Motion>', self.myPen) elif name=='earsor': self.drawCad.bind('<B1-Motion>', self.myEarsor) elif name=='clear': self.drawCad.delete('all') elif name=='color': c= askcolor(color=self.fgcolor,title='画笔选择颜色') self.fgcolor=c[1]def myline(self,event): self.startDraw(event) self.lastDraw=self.drawCad.create_line(self.x,self.y,event.x,event.y,fill=self.fgcolor)def mylineArrow(self,event): self.startDraw(event) self.lastDraw = self.drawCad.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.drawCad.create_rectangle(self.x, self.y, event.x, event.y, outline=self.fgcolor)def myPen(self,event): self.startDraw(event) self.drawCad.create_rectangle(self.x, self.y, event.x, event.y, outline=self.fgcolor) self.x=event.x self.y=event.ydef myEarsor(self,event): self.startDraw(event) self.drawCad.create_rectangle(event.x-4, event.y-4, event.x+4, event.y+4, fill=self.bgcolor) self.x = event.x self.y = event.ydef stopDraw(self,event): self.startDrawFlag=False self.lastDraw=0def startDraw(self,event): self.drawCad.delete(self.lastDraw) if not self.startDrawFlag: self.startDrawFlag = True self.x = event.x self.y = event.yroot=Tk()app=Application(root)root.title('简易的画图工具')root.geometry(str(win_width)+'x'+str(win_height)+'+100+100')root.mainloop()

结果展示

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持好吧啦网。