python实现图片处理工具——详细代码分析与实现

本文将详细分析一款基于 wxPython 和 Pillow (PIL) 的简单图片处理工具，包括核心功能的实现与代码的设计思路。这款工具支持图片选择、旋转、合并、压缩，并且具有友好的图形用户界面（GUI）。
C:\pythoncode\new\imagemergeandexpress.py

全部代码

import wx
from PIL import Image
import os
from io import BytesIO

class ImageProcessorFrame(wx.Frame):
    def __init__(self):
        super().__init__(parent=None, title='图片处理工具')
        self.selected_images = []
        self.current_image = None
        self.current_pil_image = None  # 存储PIL Image对象
        self.init_ui()
        
    def init_ui(self):
        panel = wx.Panel(self)
        main_sizer = wx.BoxSizer(wx.HORIZONTAL)
        
        # 左侧控制面板
        left_sizer = wx.BoxSizer(wx.VERTICAL)
        
        # 创建按钮
        select_btn = wx.Button(panel, label='选择图片')
        rotate_btn = wx.Button(panel, label='旋转')
        merge_btn = wx.Button(panel, label='合并')
        compress_btn = wx.Button(panel, label='压缩')
        
        # 创建列表框显示选择的图片
        self.list_box = wx.ListBox(panel, size=(200, 300))
        
        # 添加组件到左侧sizer
        left_sizer.Add(select_btn, 0, wx.ALL | wx.EXPAND, 5)
        left_sizer.Add(self.list_box, 1, wx.ALL | wx.EXPAND, 5)
        left_sizer.Add(rotate_btn, 0, wx.ALL | wx.EXPAND, 5)
        left_sizer.Add(merge_btn, 0, wx.ALL | wx.EXPAND, 5)
        left_sizer.Add(compress_btn, 0, wx.ALL | wx.EXPAND, 5)
        
        # 右侧图片显示区域
        right_sizer = wx.BoxSizer(wx.VERTICAL)
        self.image_display = wx.StaticBitmap(panel, size=(600, 400))
        right_sizer.Add(self.image_display, 1, wx.EXPAND | wx.ALL, 5)
        
        # 将左右两侧添加到主sizer
        main_sizer.Add(left_sizer, 0, wx.EXPAND | wx.ALL, 5)
        main_sizer.Add(right_sizer, 1, wx.EXPAND | wx.ALL, 5)
        
        # 绑定事件
        select_btn.Bind(wx.EVT_BUTTON, self.on_select)
        rotate_btn.Bind(wx.EVT_BUTTON, self.on_rotate)
        merge_btn.Bind(wx.EVT_BUTTON, self.on_merge)
        compress_btn.Bind(wx.EVT_BUTTON, self.on_compress)
        self.list_box.Bind(wx.EVT_LISTBOX, self.on_select_image)
        
        panel.SetSizer(main_sizer)
        self.SetSize((900, 600))
        self.Centre()
        
    def update_image_display(self, pil_image):
        """更新图片显示"""
        if pil_image:
            try:
                # 确保图片是RGB模式
                if pil_image.mode != 'RGB':
                    pil_image = pil_image.convert('RGB')
                
                # 获取显示区域的大小
                display_size = self.image_display.GetSize()
                image_size = pil_image.size
                
                # 计算缩放比例
                ratio = min(display_size[0]/image_size[0], 
                          display_size[1]/image_size[1])
                new_size = (int(image_size[0] * ratio), 
                          int(image_size[1] * ratio))
                
                # 调整图片大小
                resized_image = pil_image.resize(new_size, Image.Res