import tkinter as tk
import tkinter.ttk as ttk
import tkinter.messagebox
import tkinter.filedialog
import cv2 as cv
from PIL import Image, ImageTk
import time
import threading
 
RELIEF=['flat', 'raised', 'sunken', 'solid', 'ridge', 'groove']
CURSOR=['arrow','circle','clock','cross','dotbox','exchange',
        'fleur','heart','man','mouse','pirate','plus',
        'shuttle','sizing','spider','spraycan','star','target',
        'tcross','trek','watch']
 
def PIL2CV(im):
    im = im[:, :, ::-1]
    return ImageTk.PhotoImage(Image.fromarray(im))
 
def Buttom1_CallBack():
    filename = tk.filedialog.askopenfilename() #弹出文件选择对话框
    if filename=='': #用户没有选择任何文件
        return
    new_img = cv.imread(filename)
    if new_img is None:
        tk.messagebox.showerror('抱歉', '图片加载失败！')
        return
    new_img = cv.resize(new_img, (130, 120))
    new_img = PIL2CV(new_img)
    #后面两句实现图片切换显示
    Label2.configure(image=new_img, width=130, height=120)
    Label2.image = new_img
    tk.messagebox.showinfo('提示','加载图片完成！')
 
def Buttom2_CallBack():
    info = Combobox1.get()
    param = Entry1.get()
    tk.messagebox.showwarning('警告', '你选择了：'+info+' '+param)
 
def process_code(delay):
    for i in range(100):
        Progressbar1['value'] = i+1
        root.update()
        time.sleep(delay)
    Buttom3.configure(text='开始处理', state='normal')
    tk.messagebox.showinfo('提示', '处理完成！')
    Progressbar1.configure(value=0)
 
def Buttom3_CallBack():
    yn = tk.messagebox.askyesno('警告','是否需要开始处理？')
    if not yn:
        return
 
    Buttom3.configure(text='处理中...', state='disabled') #控件失效
    delay = 0.01
 
    # 单独开一个线程，绑定线程函数process_code，参数后面的','很关键
    # 不开线程界面会进入处理函数死循环，用户体验不太好
    t = threading.Thread(target=process_code, args=(delay,))
    t.start()
 
def Buttom4_CallBack():
    global page_count
    if page_count=0:
        page_count = 0
        return
    else:
        page_count -= 1
        Label4.configure(text='第'+str(page_count)+'页')
    return
 
def Buttom5_CallBack():
    global page_count
    if page_count>=100:
        page_count = 100
        return
    else:
        page_count += 1
        Label4.configure(text='第' + str(page_count) + '页')
    return
 
#上面是控件的响应函数
################################################################################
#下面是界面控件的布局
 
#主界面
root = tk.Tk()
root.title('python界面测试') #修改界面标题
root.iconbitmap('img/tm.ico') #修改界面ico
root.geometry('800x500') #设定界面尺寸 HxW
root.resizable(width=False, height=False) #不允许调整窗口大小，不固定删除此行
 
#添加两个板块边界框
Frame1 = tk.LabelFrame(root, height=200, width=145)
Frame1.place(x=15, y=100)
Frame2 = tk.LabelFrame(root, text="结果显示", height=400, width=620)
Frame2.place(x=170, y=5)
 
#添加图片显示框、加载图片框、加载图片按钮
img = cv.imread('img/title.jpg') #opencv加载图片
img = cv.resize(img, (140,70)) #图片缩放
img = PIL2CV(img) #opencv格式转pillow
Label1 = tk.Label(root, image=img) #初始化默认图片
Label1.place(x=15, y=20) #图片显示框在界面上的位置
 
Label2 = tk.Label(root,
                  width=18,height=7, #控件大小（注意单位不是像素）
                  bg="white") #默认白色背景
Label2.place(x=20,y=110) #图片显示框在界面上的位置
 
Buttom1 = tk.Button(root,
                    width=15,height=1, #按钮大小
                    text='加载检索图片', #按钮文本
                    relief=RELIEF[3], #按钮的风格
                    command=Buttom1_CallBack) #绑定响应函数
Buttom1.place(x=25, y=250) #按钮在界面上的位置
 
#添加参数文本框、下拉框、下拉框内容输出按钮
Combobox1 = ttk.Combobox(root, width=17, height=1)
Combobox1['value'] = ('窗前明月光','疑是地上霜','举头望明月','明月照我影')
Combobox1.current(0)
Combobox1.place(x=15, y=320)
 
Label3 = tk.Label(root, text='参数')
Label3.place(x=15, y=350)
 
Entry1 = ttk.Entry(root, width=9) #文本框为啥没有H
Entry1.place(x=50, y=350)
Entry1.insert(0,'0.5')
 
Buttom2 = tk.Button(root,
                    width=15,height=1,
                    text='你选择了什么？',
                    relief=RELIEF[3],
                    command=Buttom2_CallBack)
Buttom2.place(x=25, y=380)
 
#添加进度条、开始处理按钮
Progressbar1 = ttk.Progressbar(root, length=600, value=0, cursor=CURSOR[1])
Progressbar1.place(x=15, y=460)
 
Buttom3 = tk.Button(root,
                    width=15,height=1,
                    text='开始处理',
                    relief=RELIEF[3],
                    command=Buttom3_CallBack)
Buttom3.place(x=630, y=455)
 
#添加两个滚动按钮
Buttom4 = tk.Button(root,
                    width=3,height=1,
                    text='',
                    relief=RELIEF[1],
                    command=Buttom4_CallBack)
Buttom4.place(x=380, y=410)
 
global page_count #全局变量，用来控制页码
page_count=0
Label4 = tk.Label(root, text='第0页')
Label4.place(x=420, y=410)
 
Buttom5 = tk.Button(root,
                    width=3,height=1,
                    text='>',
                    relief=RELIEF[1],
                    command=Buttom5_CallBack)
Buttom5.place(x=470, y=410)
 
root.mainloop()
#这句话后面不能有代码