Python简易画图软件开发

悠悠 2023-09-29 22:23 37阅读 0赞

> 可以简单实现清屏、橡皮檫、矩形、直线、箭头、画笔以及颜色的选择

"""开发画图软件"""
    from tkinter import *
    from tkinter.filedialog import *
    from tkinter.colorchooser import *
    from tkinter.filedialog 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)  # super()代表的是父类的定义，而不是父类对象
            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.startDrawFalg = False
            self.pack()
            self.createWidget()
    
        def createWidget(self):
            # 创建绘图区域
            self.drawpad = Canvas(root, width=win_width, height=win_height * 0.9, bg=self.bgcolor)
            self.drawpad.pack()
    
            # 创建按钮
            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="erasor")
            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)
    
            # 增加颜色切换快捷键
            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.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.startDrawFalg = False
            self.lastDraw = 0
    
        def startDraw(self, event):
            self.drawpad.delete(self.lastDraw)
            if not self.startDrawFalg:
                self.startDrawFalg = 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 - 8, event.y - 8, event.x + 8, event.y + 8, 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("画图软件")
        app = Application(master=root)
        root.mainloop()