tkinter是Python下面向tk的图形界面接口库，可以方便地进行图形界面设计和交互操作编程。tkinter的优点是简单易用、与Python的结合度好。tkinter在Python 3.x下默认集成，不需要额外的安装操作；不足之处为缺少合适的可视化界面设计工具，需要通过代码来完成窗口设计和元素布局。
#!/usr/bin/python
# -*- coding: UTF-8 -*-
import os
import sys
if sys.version_info < (3, 0):
import Tkinter as tk # 导入 Tkinter 库
from tkFileDialog import askopenfilename, asksaveasfilename
else :
import tkinter as tk # 导入 Tkinter 库
from tkinter.filedialog import askopenfilename, asksaveasfilename
from PIL import Image, ImageTk, ImageDraw
from time import sleep
import numpy as np
import cv2 as cv
DEF_WIDTH = 1080
DEF_HEIGHT = 720
IMAGE_HEIGHT = 720
FRAME_LEFT_WIDTH = 360
# 太小的选定区域我们需要丢弃，防止误操作
MINI_RECT_AREA = 20
class RawImageEditor:
def __init__(self, win, img, rects):
#变量X和Y用来记录鼠标左键按下的位置
self.X = tk.IntVar(value=0)
self.Y = tk.IntVar(value=0)
self.sel = False
self.lastDraw = None
self.lastDraws = []
self.imageScale = 1.0
self.dispWidth = DEF_WIDTH # 图片显示区域的最大高度，宽度
self.dispHeight = DEF_HEIGHT
self.rawImage = img
self.calcImageScale(self.rawImage)
self.dispWidth = int(self.imageScale * self.rawImage.width)
self.dispHeight = int(self.imageScale * self.rawImage.height)
# 图片缩放
self.dispImage = self.rawImage.resize((self.dispWidth, self.dispHeight))
# 选择区域
self.selPositions = []
for r in rects :
self.selPositions.append((r[0] * self.imageScale, r[1] * self.imageScale, r[2] * self.imageScale, r[3] * self.imageScale))
#创建顶级组件容器
self.top = tk.Toplevel(win, width=self.dispWidth, height=self.dispHeight)
#不显示最大化、最小化按钮
self.top.overrideredirect(True)
# Make topLevelWindow remain on top until destroyed, or attribute changes.
self.top.attributes('-topmost', 'true')
self.canvas = tk.Canvas(self.top, bg='white', width=self.dispWidth, height=self.dispHeight)
self.tkImage = ImageTk.PhotoImage(self.dispImage)
self.canvas.create_image(self.dispWidth//2, self.dispHeight//2, image=self.tkImage)
for r in self.selPositions :
draw = self.canvas.create_rectangle(r[0], r[1], r[2], r[3], outline='green')
self.lastDraws.append(draw)
#鼠标左键按下的位置
def onLeftButtonDown(event):
self.X.set(event.x)
self.Y.set(event.y)
#开始截图
self.sel = True
#重新绘制已经选择的区域
for draw in self.lastDraws :
self.canvas.delete(draw)
self.lastDraws = []
for r in self.selPositions :
draw = self.canvas.create_rectangle(r[0], r[1], r[2], r[3], outline='green')
self.lastDraws.append(draw)
self.canvas.bind('<Button-1>', onLeftButtonDown)
#鼠标左键移动，显示选取的区域
def onLeftButtonMove(event):
if not self.sel:
return
try:
#删除刚画完的图形，要不然鼠标移动的时候是黑乎乎的一片矩形
self.canvas.delete(self.lastDraw)
except Exception as e:
pass
self.lastDraw = self.canvas.create_rectangle(self.X.get(), self.Y.get(), event.x, event.y, outline='green')
self.canvas.bind('<B1-Motion>', onLeftButtonMove)
#获取鼠标左键抬起的位置，保存区域截图
def onLeftButtonUp(event):
self.sel = False
sleep(0.1)
#考虑鼠标左键从右下方按下而从左上方抬起的截图
left, right = sorted([self.X.get(), event.x])
top, bottom = sorted([self.Y.get(), event.y])
if (right - left) * (bottom - top) > MINI_RECT_AREA :
self.selPositions.append((left,top,right,bottom))
#self.top.destroy()
#鼠标右键按下
def onRightButtonDown(event):
self.sel = False
self.top.destroy()
self.canvas.bind('<Button-2>', onRightButtonDown)
self.canvas.bind('<ButtonRelease-1>', onLeftButtonUp)
self.canvas.pack(fill=tk.BOTH, expand=tk.YES)
def calcImageScale(self, image) :
w = image.width
h = image.height
self.imageScale = 1.0
# 计算最小的缩放比例，保证原始宽高比
if w > self.dispWidth and h > self.dispHeight :
ws = self.dispWidth * 1.0 / w
hs = self.dispHeight * 1.0 / h
if ws < hs :
self.imageScale = ws
else :
self.imageScale = hs
elif w > self.dispWidth and h < self.dispHeight :
self.imageScale = self.dispWidth * 1.0 / w
elif w < self.dispWidth and h > self.dispHeight :
self.imageScale = self.dispHeight * 1.0 / h
def waitForWindow(self, win) :
win.wait_window(self.top)
def selectedPositions(self) :
# 转换为原始像素位置
realPos = []
for r in self.selPositions :
realPos.append((r[0] / self.imageScale, r[1] / self.imageScale, r[2] / self.imageScale, r[3] / self.imageScale))
return realPos
class MainWin(tk.Tk):
def __init__)ge.save(filename)
def setupUI(self):
# 左边菜单栏
left_f = tk.Frame(self, height=self.frameDispHeight, width=self.leftFrameWidth)
left_f.pack(side=tk.LEFT)
# 各种功能按钮名称及位置
btnOpen = tk.Button(left_f, text='打开图像', command=self.openAndDisplayImage)
btnOpen.place(y=25, x=30, width=300, height=self.btnHeight)
btnTrans = tk.Button(left_f, text='处理图像', command=self.onTransRawImageBtnClicked)
btnTrans.place(y=85, x=30, width=300, height=self.btnHeight)
l_selRect = tk.Label(left_f, text = '鼠标选定区域')
l_selRect.place(x=0, y=165, width=self.leftFrameWidth, height=self.labelTextHeight)
'''列表'''
self.l_box = tk.Listbox(left_f) # 创建两个列表组件
self.l_box.place(x=0, y=165+self.labelTextHeight, width=self.leftFrameWidth, height=270)
self.l_box.bind('<<ListboxSelect>>', self.onRectListboxSelect)
self.drawListBox()
# 删除选定项
btnDel = tk.Button(left_f, text='删除选定项', command=self.deleteSelectedItemFromListBox)
btnDel.place(y=460, x=30, width=300, height=self.btnHeight)
btnSave = tk.Button(left_f, text='保存结果', command=self.onSaveTransRawImageBtnClicked)
btnSave.place(y=550, x=30, width=300, height=self.btnHeight)
# 右侧图像显示栏
right_f = tk.Frame(self, height=self.frameDispHeight, width=self.imageDispWidth)
right_f.pack(side=tk.RIGHT)
l_rawT = tk.Label(right_f, text = '原始图片')
l_rawT.place(x=0, y=0, width=self.imageDispWidth, height=self.labelTextHeight)
self.image_l_raw = tk.Label(right_f, relief='ridge')
self.image_l_raw.place(x=0, y=self.labelTextHeight, width=self.imageDispWidth, height=self.imageDispHeight)
self.image_l_raw.bind("<Button-1>",self.rawImageLabelClicked)
l_transT = tk.Label(right_f, text = '处理后图片')
l_transT.place(x=0, y=self.labelTextHeight + self.imageDispHeight, width=self.imageDispWidth, height=self.labelTextHeight)
self.image_l_trans = tk.Label(right_f, relief='ridge')
self.image_l_trans.place(x=0, y=self.labelTextHeight + self.imageDispHeight + self.labelTextHeight, width=self.imageDispWidth, height=self.imageDispHeight)
if __name__ == '__main__' :
win = MainWin()
# 进入消息循环
win.mainloop()
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