"""开发画图软件的菜单"""
from tkinter import *
from tkinter.filedialog import *
from tkinter.colorchooser import *
#窗口的宽度和高度
win_width = 900
win_height = 500
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()
#创建按键
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_erasor = Button(root,text="橡皮擦",name="start")
btn_erasor.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_pen.bind_class("Button","<1>",self.eventManager)
self.drawpad.bind("<ButtonRelease-1>",self.stopDraw)
#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 == "erasor":
self.drawpad.bind("<B1-Motion>", self.myEraser)
elif name == "clear":
self.drawpad.delete("all")
elif name =="color": # askcolor 点击弹出“颜色框”
c = askcolor(color=self.fgcolor,title="选择画笔颜色")
self.fgcolor = c[1]
#颜色区 [(255,0,0),#ff0000] 索引要掉用 1 ,颜色代码
def stopDraw(self,event):
self.stopDrawFlag = 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):#将后一个直线段的终点变为下一个段的起点
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,
arrow=LAST,fill=self.fgcolor)
def myRect(self,event):
self.startDraw(event)
self.lastDraw = self.drawpad.create_line(self.x, self.y,
outline =self.fgcolor)
def myPen(self,event):
self.startDraw(event)
self.lastDraw = self.drawpad.create_line(self.x,self.y,
event.x,event.y,fill=self.fgcolor)
self.x = event.x
self.y = event.y
def myEraser(self,event): #将后一个直线段的终点变为下一个段的起点
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 ="#ff0000"
elif event.char =="y":
self.fgcolor ="#ff0000"
if __name__ =="__main__":
root = Tk()
root.geometry(str(win_width)+"x"+str(win_height)+"+200+300")
root.title("百战程序员的画图软件")
app = Application(master=root)
root.mainloop()
if __name__ == '__main__':
root = Tk()
root.geometry(str(win_width)+"x"+str(win_height)+"+200+300")
root.title("画图小工具")
app = Application(master=root)
root.mainloop()
老师,画笔连不起来,帮忙看下,没找出来问题点。