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:DevelopmentIProcesser/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", "1"))
        self.label_2.setText(_translate("Dialog", "Pixel"))
        self.offset_meter_le.setPlaceholderText(_translate("Dialog", "1"))
        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", "0"))
        self.label_12.setText(_translate("Dialog", "LTy:"))
        self.offset_lty_le.setPlaceholderText(_translate("Dialog", "0"))
        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_())