python实现画图工具

发布时间：2020-08-30 02:59:21

来源：脚本之家

阅读：99

作者：小黑来修仙

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=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 #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("",self.stopDraw)

def eventManger(self,event):

name=event.widget.winfo_name()

print(name)

if name=="line" :

self.drawCad.bind("",self.myline)

elif name=="lineArrow":

self.drawCad.bind("", self.mylineArrow)

elif name=="rect":

self.drawCad.bind("", self.myRect)

elif name=="pen":

self.drawCad.bind("", self.myPen)

elif name=="earsor":

self.drawCad.bind("", 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.y

def 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.y

def stopDraw(self,event):

self.startDrawFlag=False

self.lastDraw=0

def startDraw(self,event):

self.drawCad.delete(self.lastDraw)

if not self.startDrawFlag:

self.startDrawFlag = True

self.x = event.x

self.y = event.y

root=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亿速云。