基于pyqt5的图片素材批量处理工具

• 功能

　　　　分辨率的批量转换，文件夹递归查找

　　　　像素偏移量批量调整，文件夹单层查找

　　　　画布的大小的批量进行调整，不进行缩放，文件夹单层查找

• 界面

• 通过PyUIC生成的代码

 # -*- coding: utf-8 -*-

 # Form implementation generated from reading ui file 'E:\Development\IProcesser/IProcessingDialog.ui'
 #
 # Created by: PyQt5 UI code generator 5.5.1
 #
 # WARNING! All changes made in this file will be lost!

 from PyQt5 import QtCore, QtGui, QtWidgets

 class Ui_Dialog(object):
     def setupUi(self, Dialog):
         Dialog.setObjectName("Dialog")
         Dialog.resize(411, 525)
         self.verticalLayout_2 = QtWidgets.QVBoxLayout(Dialog)
         self.verticalLayout_2.setObjectName("verticalLayout_2")
         self.tabWidget = QtWidgets.QTabWidget(Dialog)
         self.tabWidget.setObjectName("tabWidget")
         self.tab = QtWidgets.QWidget()
         self.tab.setObjectName("tab")
         self.verticalLayout = QtWidgets.QVBoxLayout(self.tab)
         self.verticalLayout.setObjectName("verticalLayout")
         self.horizontalLayout_5 = QtWidgets.QHBoxLayout()
         self.horizontalLayout_5.setObjectName("horizontalLayout_5")
         self.label_5 = QtWidgets.QLabel(self.tab)
         self.label_5.setObjectName("label_5")
         self.horizontalLayout_5.addWidget(self.label_5)
         self.reslotion_src_le = QtWidgets.QLineEdit(self.tab)
         self.reslotion_src_le.setObjectName("reslotion_src_le")
         self.horizontalLayout_5.addWidget(self.reslotion_src_le)
         self.reslotion_src_view_btn = QtWidgets.QPushButton(self.tab)
         self.reslotion_src_view_btn.setObjectName("reslotion_src_view_btn")
         self.horizontalLayout_5.addWidget(self.reslotion_src_view_btn)
         self.verticalLayout.addLayout(self.horizontalLayout_5)
         self.horizontalLayout_7 = QtWidgets.QHBoxLayout()
         self.horizontalLayout_7.setObjectName("horizontalLayout_7")
         self.label_8 = QtWidgets.QLabel(self.tab)
         self.label_8.setObjectName("label_8")
         self.horizontalLayout_7.addWidget(self.label_8)
         self.reslotion_dst_le = QtWidgets.QLineEdit(self.tab)
         self.reslotion_dst_le.setEnabled(True)
         self.reslotion_dst_le.setObjectName("reslotion_dst_le")
         self.horizontalLayout_7.addWidget(self.reslotion_dst_le)
         self.reslotion_dst_view_btn = QtWidgets.QPushButton(self.tab)
         self.reslotion_dst_view_btn.setObjectName("reslotion_dst_view_btn")
         self.horizontalLayout_7.addWidget(self.reslotion_dst_view_btn)
         self.verticalLayout.addLayout(self.horizontalLayout_7)
         self.horizontalLayout = QtWidgets.QHBoxLayout()
         self.horizontalLayout.setObjectName("horizontalLayout")
         self.label_6 = QtWidgets.QLabel(self.tab)
         self.label_6.setObjectName("label_6")
         self.horizontalLayout.addWidget(self.label_6)
         self.reslotion_srcw_le = QtWidgets.QLineEdit(self.tab)
         self.reslotion_srcw_le.setInputMethodHints(QtCore.Qt.ImhDigitsOnly)
         self.reslotion_srcw_le.setObjectName("reslotion_srcw_le")
         self.horizontalLayout.addWidget(self.reslotion_srcw_le)
         self.label_7 = QtWidgets.QLabel(self.tab)
         self.label_7.setObjectName("label_7")
         self.horizontalLayout.addWidget(self.label_7)
         self.reslotion_srch_le = QtWidgets.QLineEdit(self.tab)
         self.reslotion_srch_le.setInputMethodHints(QtCore.Qt.ImhDigitsOnly)
         self.reslotion_srch_le.setObjectName("reslotion_srch_le")
         self.horizontalLayout.addWidget(self.reslotion_srch_le)
         self.label_10 = QtWidgets.QLabel(self.tab)
         self.label_10.setObjectName("label_10")
         self.horizontalLayout.addWidget(self.label_10)
         self.reslotion_dstw_le = QtWidgets.QLineEdit(self.tab)
         self.reslotion_dstw_le.setInputMethodHints(QtCore.Qt.ImhDigitsOnly)
         self.reslotion_dstw_le.setObjectName("reslotion_dstw_le")
         self.horizontalLayout.addWidget(self.reslotion_dstw_le)
         self.label_9 = QtWidgets.QLabel(self.tab)
         self.label_9.setObjectName("label_9")
         self.horizontalLayout.addWidget(self.label_9)
         self.reslotion_dsth_le = QtWidgets.QLineEdit(self.tab)
         self.reslotion_dsth_le.setInputMethodHints(QtCore.Qt.ImhDigitsOnly)
         self.reslotion_dsth_le.setObjectName("reslotion_dsth_le")
         self.horizontalLayout.addWidget(self.reslotion_dsth_le)
         self.verticalLayout.addLayout(self.horizontalLayout)
         self.horizontalLayout_8 = QtWidgets.QHBoxLayout()
         self.horizontalLayout_8.setObjectName("horizontalLayout_8")
         spacerItem = QtWidgets.QSpacerItem(40, 20, QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Minimum)
         self.horizontalLayout_8.addItem(spacerItem)
         self.reslotion_submit_btn = QtWidgets.QPushButton(self.tab)
         self.reslotion_submit_btn.setEnabled(True)
         self.reslotion_submit_btn.setObjectName("reslotion_submit_btn")
         self.horizontalLayout_8.addWidget(self.reslotion_submit_btn)
         self.verticalLayout.addLayout(self.horizontalLayout_8)
         self.tabWidget.addTab(self.tab, "")
         self.tab_2 = QtWidgets.QWidget()
         self.tab_2.setObjectName("tab_2")
         self.verticalLayout_4 = QtWidgets.QVBoxLayout(self.tab_2)
         self.verticalLayout_4.setObjectName("verticalLayout_4")
         self.horizontalLayout_2 = QtWidgets.QHBoxLayout()
         self.horizontalLayout_2.setObjectName("horizontalLayout_2")
         self.label = QtWidgets.QLabel(self.tab_2)
         self.label.setObjectName("label")
         self.horizontalLayout_2.addWidget(self.label)
         self.offset_pixel_le = QtWidgets.QLineEdit(self.tab_2)
         self.offset_pixel_le.setObjectName("offset_pixel_le")
         self.horizontalLayout_2.addWidget(self.offset_pixel_le)
         self.label_2 = QtWidgets.QLabel(self.tab_2)
         self.label_2.setObjectName("label_2")
         self.horizontalLayout_2.addWidget(self.label_2)
         self.offset_meter_le = QtWidgets.QLineEdit(self.tab_2)
         self.offset_meter_le.setObjectName("offset_meter_le")
         self.horizontalLayout_2.addWidget(self.offset_meter_le)
         self.label_3 = QtWidgets.QLabel(self.tab_2)
         self.label_3.setObjectName("label_3")
         self.horizontalLayout_2.addWidget(self.label_3)
         self.verticalLayout_4.addLayout(self.horizontalLayout_2)
         self.horizontalLayout_3 = QtWidgets.QHBoxLayout()
         self.horizontalLayout_3.setObjectName("horizontalLayout_3")
         self.label_4 = QtWidgets.QLabel(self.tab_2)
         self.label_4.setObjectName("label_4")
         self.horizontalLayout_3.addWidget(self.label_4)
         self.offset_dire_le = QtWidgets.QLineEdit(self.tab_2)
         self.offset_dire_le.setObjectName("offset_dire_le")
         self.horizontalLayout_3.addWidget(self.offset_dire_le)
         self.offset_view_btn = QtWidgets.QPushButton(self.tab_2)
         self.offset_view_btn.setObjectName("offset_view_btn")
         self.horizontalLayout_3.addWidget(self.offset_view_btn)
         self.verticalLayout_4.addLayout(self.horizontalLayout_3)
         self.horizontalLayout_4 = QtWidgets.QHBoxLayout()
         self.horizontalLayout_4.setObjectName("horizontalLayout_4")
         self.label_11 = QtWidgets.QLabel(self.tab_2)
         self.label_11.setObjectName("label_11")
         self.horizontalLayout_4.addWidget(self.label_11)
         self.offset_ltx_le = QtWidgets.QLineEdit(self.tab_2)
         self.offset_ltx_le.setMaximumSize(QtCore.QSize(50, 16777215))
         self.offset_ltx_le.setObjectName("offset_ltx_le")
         self.horizontalLayout_4.addWidget(self.offset_ltx_le)
         self.label_12 = QtWidgets.QLabel(self.tab_2)
         self.label_12.setObjectName("label_12")
         self.horizontalLayout_4.addWidget(self.label_12)
         self.offset_lty_le = QtWidgets.QLineEdit(self.tab_2)
         self.offset_lty_le.setMaximumSize(QtCore.QSize(50, 16777215))
         self.offset_lty_le.setObjectName("offset_lty_le")
         self.horizontalLayout_4.addWidget(self.offset_lty_le)
         spacerItem1 = QtWidgets.QSpacerItem(40, 20, QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Minimum)
         self.horizontalLayout_4.addItem(spacerItem1)
         self.rename_ckb = QtWidgets.QCheckBox(self.tab_2)
         self.rename_ckb.setObjectName("rename_ckb")
         self.horizontalLayout_4.addWidget(self.rename_ckb)
         self.verticalLayout_4.addLayout(self.horizontalLayout_4)
         self.horizontalLayout_6 = QtWidgets.QHBoxLayout()
         self.horizontalLayout_6.setObjectName("horizontalLayout_6")
         spacerItem2 = QtWidgets.QSpacerItem(40, 20, QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Minimum)
         self.horizontalLayout_6.addItem(spacerItem2)
         self.offset_submit_btn = QtWidgets.QPushButton(self.tab_2)
         self.offset_submit_btn.setObjectName("offset_submit_btn")
         self.horizontalLayout_6.addWidget(self.offset_submit_btn)
         self.verticalLayout_4.addLayout(self.horizontalLayout_6)
         self.tabWidget.addTab(self.tab_2, "")
         self.tab_5 = QtWidgets.QWidget()
         self.tab_5.setObjectName("tab_5")
         self.verticalLayout_5 = QtWidgets.QVBoxLayout(self.tab_5)
         self.verticalLayout_5.setObjectName("verticalLayout_5")
         self.horizontalLayout_9 = QtWidgets.QHBoxLayout()
         self.horizontalLayout_9.setObjectName("horizontalLayout_9")
         self.label_13 = QtWidgets.QLabel(self.tab_5)
         self.label_13.setObjectName("label_13")
         self.horizontalLayout_9.addWidget(self.label_13)
         self.size_directory_le = QtWidgets.QLineEdit(self.tab_5)
         self.size_directory_le.setObjectName("size_directory_le")
         self.horizontalLayout_9.addWidget(self.size_directory_le)
         self.size_view_btn = QtWidgets.QPushButton(self.tab_5)
         self.size_view_btn.setObjectName("size_view_btn")
         self.horizontalLayout_9.addWidget(self.size_view_btn)
         self.verticalLayout_5.addLayout(self.horizontalLayout_9)
         self.horizontalLayout_10 = QtWidgets.QHBoxLayout()
         self.horizontalLayout_10.setObjectName("horizontalLayout_10")
         self.label_14 = QtWidgets.QLabel(self.tab_5)
         self.label_14.setObjectName("label_14")
         self.horizontalLayout_10.addWidget(self.label_14)
         self.size_width_le = QtWidgets.QLineEdit(self.tab_5)
         self.size_width_le.setInputMethodHints(QtCore.Qt.ImhNone)
         self.size_width_le.setObjectName("size_width_le")
         self.horizontalLayout_10.addWidget(self.size_width_le)
         self.label_15 = QtWidgets.QLabel(self.tab_5)
         self.label_15.setObjectName("label_15")
         self.horizontalLayout_10.addWidget(self.label_15)
         self.size_height_le = QtWidgets.QLineEdit(self.tab_5)
         self.size_height_le.setInputMethodHints(QtCore.Qt.ImhNone)
         self.size_height_le.setObjectName("size_height_le")
         self.horizontalLayout_10.addWidget(self.size_height_le)
         self.verticalLayout_5.addLayout(self.horizontalLayout_10)
         spacerItem3 = QtWidgets.QSpacerItem(20, 41, QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding)
         self.verticalLayout_5.addItem(spacerItem3)
         self.horizontalLayout_11 = QtWidgets.QHBoxLayout()
         self.horizontalLayout_11.setObjectName("horizontalLayout_11")
         spacerItem4 = QtWidgets.QSpacerItem(40, 20, QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Minimum)
         self.horizontalLayout_11.addItem(spacerItem4)
         self.size_submit_btn = QtWidgets.QPushButton(self.tab_5)
         self.size_submit_btn.setObjectName("size_submit_btn")
         self.horizontalLayout_11.addWidget(self.size_submit_btn)
         self.verticalLayout_5.addLayout(self.horizontalLayout_11)
         self.tabWidget.addTab(self.tab_5, "")
         self.verticalLayout_2.addWidget(self.tabWidget)
         self.groupBox_3 = QtWidgets.QGroupBox(Dialog)
         self.groupBox_3.setObjectName("groupBox_3")
         self.verticalLayout_3 = QtWidgets.QVBoxLayout(self.groupBox_3)
         self.verticalLayout_3.setObjectName("verticalLayout_3")
         self.output_lw = QtWidgets.QListWidget(self.groupBox_3)
         self.output_lw.setObjectName("output_lw")
         self.verticalLayout_3.addWidget(self.output_lw)
         self.verticalLayout_2.addWidget(self.groupBox_3)
         self.verticalLayout_2.setStretch(1, 2)

         self.retranslateUi(Dialog)
         self.tabWidget.setCurrentIndex(0)
         QtCore.QMetaObject.connectSlotsByName(Dialog)

     def retranslateUi(self, Dialog):
         _translate = QtCore.QCoreApplication.translate
         Dialog.setWindowTitle(_translate("Dialog", "IProcesser"))
         self.label_5.setText(_translate("Dialog", "Src:"))
         self.reslotion_src_view_btn.setText(_translate("Dialog", "View..."))
         self.label_8.setText(_translate("Dialog", "Dst:"))
         self.reslotion_dst_view_btn.setText(_translate("Dialog", "View..."))
         self.label_6.setText(_translate("Dialog", "SrcW"))
         self.label_7.setText(_translate("Dialog", "SrcH"))
         self.label_10.setText(_translate("Dialog", "DstW:"))
         self.label_9.setText(_translate("Dialog", "DstH:"))
         self.reslotion_submit_btn.setText(_translate("Dialog", "Submit"))
         self.tabWidget.setTabText(self.tabWidget.indexOf(self.tab), _translate("Dialog", "分辨率转换"))
         self.label.setText(_translate("Dialog", "设定像素比:"))
         self.offset_pixel_le.setPlaceholderText(_translate("Dialog", ""))
         self.label_2.setText(_translate("Dialog", "Pixel"))
         self.offset_meter_le.setPlaceholderText(_translate("Dialog", ""))
         self.label_3.setText(_translate("Dialog", "Meter"))
         self.label_4.setText(_translate("Dialog", "序列文件夹:"))
         self.offset_view_btn.setText(_translate("Dialog", "View..."))
         self.label_11.setText(_translate("Dialog", "LTx:"))
         self.offset_ltx_le.setPlaceholderText(_translate("Dialog", ""))
         self.label_12.setText(_translate("Dialog", "LTy:"))
         self.offset_lty_le.setPlaceholderText(_translate("Dialog", ""))
         self.rename_ckb.setText(_translate("Dialog", "改名"))
         self.offset_submit_btn.setText(_translate("Dialog", "Submit"))
         self.tabWidget.setTabText(self.tabWidget.indexOf(self.tab_2), _translate("Dialog", "偏移值调整"))
         self.label_13.setText(_translate("Dialog", "目录:"))
         self.size_view_btn.setText(_translate("Dialog", "View..."))
         self.label_14.setText(_translate("Dialog", "设定宽度:"))
         self.label_15.setText(_translate("Dialog", "设定高度:"))
         self.size_submit_btn.setText(_translate("Dialog", "Submit"))
         self.tabWidget.setTabText(self.tabWidget.indexOf(self.tab_5), _translate("Dialog", "尺寸调整"))
         self.groupBox_3.setTitle(_translate("Dialog", "输出"))

 import IProcessing_rc

• Wrap PyUIC生成的代码

 # coding=utf-8
 import os, shutil, threading, math
 from PIL import Image
 from PyQt5.QtCore import *
 from PyQt5.QtGui import QIcon
 from PyQt5.QtWidgets import *

 import IProcessingDialog
 import IProcessing_rc

 class IPDW(QDialog, IProcessingDialog.Ui_Dialog):
     output_lw_signal = pyqtSignal(str)
     reslotion_submit_signal = pyqtSignal()

     def __init__(self):
         super(IPDW, self).__init__()
         self.setupUi(self)
         # icon
         self.setWindowIcon(QIcon(':/icon/icon.ico'))
         # 信号连接
         self.output_lw_signal.connect(self.output_lw_signal_proc)
         # 分辨率调整
         self.reslotion_src_view_btn.clicked.connect(self.reslotion_src_view_btn_clicked)
         self.reslotion_dst_view_btn.clicked.connect(self.reslotion_dst_view_btn_clicked)
         self.reslotion_submit_btn.clicked.connect(self.reslotion_submit_btn_clicked)
         # 偏移调整
         self.offset_view_btn.clicked.connect(self.offset_view_btn_clicked)
         self.offset_submit_btn.clicked.connect(self.offset_submit_btn_clicked)
         # 尺寸调整
         self.size_view_btn.clicked.connect(self.size_view_btn_clicked)
         self.size_submit_btn.clicked.connect(self.size_submit_btn_clicked)

     ####################################################################################################################
     # 分辨率调整
     ####################################################################################################################
     # 分辨率调整-源目录-浏览
     def reslotion_src_view_btn_clicked(self):
         directory = QFileDialog.getExistingDirectory(self, 'Src')
         self.reslotion_src_le.setText(directory)

     # 分辨率调整-目标目录-浏览
     def reslotion_dst_view_btn_clicked(self):
         directory = QFileDialog.getExistingDirectory(self, 'Dst')
         self.reslotion_dst_le.setText(directory)

     # 分辨率调整-确定
     def reslotion_submit_btn_clicked(self):
         self.reslotion_submit_btn.setEnabled(False)
         t = threading.Thread(target=self.fact_convert_resolution)
         t.start()

     # 分辨率调整-线程工作函数
     def fact_convert_resolution(self):
         try:
             # 删除已经存在转换目标目录
             wdire = self.reslotion_dst_le.text()
             wdire = os.path.join(wdire, os.path.split(self.reslotion_src_le.text())[-1] + '_convert')
             wdire = wdire.replace('\\', '/')
             if os.path.exists(wdire): shutil.rmtree(wdire)
             wdire = shutil.copytree(self.reslotion_src_le.text(), wdire)
             rw, rh = float(self.reslotion_dstw_le.text()) / float(self.reslotion_srcw_le.text()), \
                      float(self.reslotion_dsth_le.text()) / float(self.reslotion_srch_le.text())
             self.conver_resolution(wdire, rw, rh)
         except: QMessageBox.information(self, 'Error', '请检查输入是否完整.')
         self.output_lw_signal.emit('全部转换工作已经完成.')
         self.reslotion_submit_btn.setEnabled(True)

     ####################################################################################################################
     # 偏移值调整
     ####################################################################################################################
     # 偏移值调整-序列文件夹-浏览
     def offset_view_btn_clicked(self):
         directory = QFileDialog.getExistingDirectory(self, 'Sequence')
         self.offset_dire_le.setText(directory)

     # 偏移值调整-确定
     def offset_submit_btn_clicked(self):
         dire = self.offset_dire_le.text()
         if dire == None:
             QMessageBox.information(self, 'Error', '参数错误.')
             return
         if os.path.isdir(dire) == False:
             QMessageBox.information(self, 'Error', '参数错误.')
             return
         # 遍历文件夹下的图片文件
         self.offset_submit_btn.setEnabled(False)
         # args是一个数组变量参数，如果只传递一个值，
         # 就只需要i, 如果需要传递多个参数，那么还可以继续传递下去其他的参数，
         # 其中的逗号不能少，少了就不是数组了，就会出错
         t = threading.Thread(target=self.offset_submit_worker, args=(dire,))
         t.start()

     # 偏移值调整-线程工作函数
     def offset_submit_worker(self, dire):
         if not self.offset_pixel_le.text(): pixel = int(self.offset_pixel_le.placeholderText())
         else: pixel = int(self.offset_pixel_le.text())
         if not self.offset_meter_le.text(): meter = int (self.offset_meter_le.placeholderText())
         else: meter = int(self.offset_meter_le.text())
         if not self.offset_ltx_le.text(): ltx = float(self.offset_ltx_le.placeholderText())
         else: ltx = float(self.offset_ltx_le.text())
         if not self.offset_lty_le.text(): lty = float(self.offset_lty_le.placeholderText())
         else: lty = float(self.offset_lty_le.text())
         # 计算偏移像素
         offx = int(ltx * pixel / meter)
         offy = int(lty * pixel / meter)
         # print(offx, offy)
         # self.output_lw_signal.emit('will process ' + dire)
         try:
             n = 0
             for file in os.listdir(dire):
                 fn = os.path.join(dire, file)
                 fn = fn.replace('\\', '/')
                 # self.output_lw_signal.emit('->' + fn)
                 if os.path.isfile(fn):
                     # 分割文件名与文件扩展名
                     f,e = os.path.splitext(fn)
                     # 只针对带透明通道的图片
                     exts = ['.png', '.psd']
                     if e in exts:
                         s = Image.open(fn)
                         sw,sh = s.size
                         # 调整宽和高为64的倍数
                         # rw = math.ceil(sw/64.0)
                         # rh = math.ceil(sh/64.0)
                         # dw = 64 * rw
                         dw = sw + abs(int(2 * offx))
                         if (dw-sw)%2 == 1: dw+=1
                         # dh = 64 * rh
                         dh = sh + abs(int(2 * offy))
                         if (dh-sh)%2 ==1: dh+=1
                         # print(sw, sh, dw, dh, rw, rh)
                         # 创建一个容器图片
                         ns = Image.new('RGBA', (dw,dh))
                         # 原图无偏移区域
                         bx = int((dw-sw)/2) + offx
                         by = int((dh-sh)/2) + offy
                         # box = (bx,by,sw+bx,sh+by)
                         # 这里需要源图片尺寸要保持不变
                         # ns.paste(s,box)
                         ns.paste(s, (bx,by))
                         ns.save(fn)
                         ns.close()
                         s.close()
                         # 顺带改名
                         if self.rename_ckb.isChecked():
                             nf = os.path.join(os.path.split(fn)[0], '%04d'%(n) + e)
                             n = n + 1
                             os.rename(fn, nf)
                             fn = nf
                         self.output_lw_signal.emit('->' + fn)
         except TypeError: print('Error', 'TypeError.')
         except IOError: print('Error', 'IOError.')
         except FileNotFoundError: print('Error', 'FileNotFoundError.')
         self.offset_submit_btn.setEnabled(True)
         self.output_lw_signal.emit('全部偏移工作已经完成.')

     # arg-目录 rw-宽度比值 rh-高度比值
     def conver_resolution(self, arg, rw, rh):
         if not os.path.isdir(arg) and not os.path.isfile(arg): return False
         if os.path.isfile(arg):
             # 分割出目录与文件
             _strs = os.path.split(arg)
             # 分割文件名与文件扩展名
             _strs = _strs[-1].split('.')
             exts = ['bmp', 'jpeg', 'jpg', 'png', 'psd']
             if _strs[-1] in exts:
                 im = Image.open(arg)
                 w,h = im.size
                 rim = im.resize((int(w*rw),int(h*rh)), Image.ANTIALIAS)
                 rim.save(arg)
                 self.output_lw_signal.emit('->' + arg)
                 im.close()
                 rim.close()
         elif os.path.isdir(arg):
             for dire in os.listdir(arg):
                 # 向目录的下一级目录执行操作
                 narg = os.path.join(arg, dire)
                 narg = narg.replace('\\', '/')
                 self.conver_resolution(narg, rw, rh)

     ####################################################################################################################
     # 尺寸调整
     ####################################################################################################################
     # 尺寸调整-目录-浏览
     def size_view_btn_clicked(self):
         directory = QFileDialog.getExistingDirectory(self, '选择需要调整尺寸的目录')
         self.size_directory_le.setText(directory)

     # 尺寸调整-确定
     def size_submit_btn_clicked(self):
         directory = self.size_directory_le.text()
         if not directory:
             self.output_lw_signal.emit('参数输入不完整.')
             return
         if not self.size_width_le.text():
             self.output_lw_signal.emit('参数输入不完整.')
             return
         else: self.size_setw = int(self.size_width_le.text())
         if not self.size_height_le.text():
             self.output_lw_signal.emit('参数输入不完整.')
             return
         else: self.size_seth = int(self.size_height_le.text())

         self.size_submit_btn.setEnabled(False)
         t = threading.Thread(target=self.size_submit_btn_callback, args=(directory,))
         t.start()

     # 尺寸调整-线程工作函数
     def size_submit_btn_callback(self, directory):
         self.output_lw_signal.emit('start process images.')
         for file in os.listdir(directory):
             compath = os.path.join(directory, file)
             compath = compath.replace('\\', '/')
             if os.path.isfile(compath):
                 # 分割出文件名与扩展名
                 f,e = os.path.splitext(compath)
                 # 确定操作的文件为图片
                 if e in ['.png', '.psd', '.jpg', '.jpeg','.bmp']:
                     im = Image.open(compath)
                     imw,imh = im.size
                     x = abs(int((imw - self.size_setw) / 2))
                     y = abs(int((imh - self.size_seth) / 2))
                     if im.size >= (self.size_setw, self.size_seth):
                         newim = im.crop((x, y, x + self.size_setw, y + self.size_seth))
                     else:
                         newim = Image.new('RGBA', (self.size_setw, self.size_seth))
                         newim.paste(im, (x, y))
                     newim.save(compath)
                     newim.close()
                     im.close()
                     self.output_lw_signal.emit(compath + ' process success.')
         self.size_submit_btn.setEnabled(True)
         self.output_lw_signal.emit('all process is completed.')

     ####################################################################################################################
     # comm
     ####################################################################################################################
     def output_lw_signal_proc(self, arg):
         self.output_lw.addItem(arg)
         self.output_lw.scrollToBottom()

     def reslotion_submit_signal_proc(self):
         self.reslotion_submit_btn.setEnabled(True)

• 程序入口

 # coding=utf-8
 import sys
 from PyQt5.QtCore import *
 from PyQt5.QtWidgets import *
 from IProcessingDialogWrap import IPDW

 if __name__ == '__main__':
     app = QApplication(sys.argv)
     ip = IPDW()
     ip.show()
     sys.exit(app.exec_())