pyqt5练习小项目

1.用Qt Designer创建界面，并转换为py文件。

2.创建一个main.py文件，编写逻辑代码。

在设计程序前，先要建立个项目文件，因为项目大了，里面会配置很多文件，比如资源文件，图片，ui文件，数据库文件，json文件，逻辑代码文件等。为了方便后期维护，开始设计时就要做一一定分类。这里做了个计算器项目。包含3个界面，分别为登陆界面，注册界面，计算器界面，目的主要是练习不同窗体之间的切换和交互。首先建立一个计算器文件，此文件里再创建个资源文件resource。再在resource创建imagehe 和ui文件用来存图片和ui文件。如下图：

注册ui文件转换代码

# -*- coding: utf-8 -*-# Form implementation generated from reading ui file 'register.ui'
#
# Created by: PyQt5 UI code generator 5.15.6
#
# WARNING: Any manual changes made to this file will be lost when pyuic5 is
# run again.  Do not edit this file unless you know what you are doing.from PyQt5 import QtCore, QtGui, QtWidgetsclass Ui_Form(object):def setupUi(self, Form):Form.setObjectName("Form")Form.resize(500, 450)Form.setMinimumSize(QtCore.QSize(500, 450))Form.setMaximumSize(QtCore.QSize(500, 450))Form.setStyleSheet("QWidget#Form{\n"
"    \n"
"    border-image: url(:/image/view.jpg);\n"
"}")self.main_menu_btn = QtWidgets.QPushButton(Form)self.main_menu_btn.setGeometry(QtCore.QRect(10, 10, 50, 50))self.main_menu_btn.setStyleSheet("QPushButton {\n"
"    border-radius:25px;\n"
"    background-color:rgb(253,167,255);\n"
"    border:2px solid rgb(226,226,226);\n"
"    color:white;\n"
"    \n"
"}\n"
"QPushButton:hover {\n"
"    \n"
"    border:4px double rgb(239,160,179);\n"
"    \n"
"}\n"
"\n"
"QPushButton:checked {\n"
"    \n"
"    \n"
"    background-color: rgb(193, 6, 255);\n"
"    \n"
"}")self.main_menu_btn.setCheckable(True)self.main_menu_btn.setObjectName("main_menu_btn")self.main_about_btn = QtWidgets.QPushButton(Form)self.main_about_btn.setGeometry(QtCore.QRect(80, 10, 50, 50))self.main_about_btn.setStyleSheet("QPushButton {\n"
"    border-radius:25px;\n"
"    background-color:rgb(253,167,255);\n"
"    border:2px solid rgb(226,226,226);\n"
"    color:white;\n"
"    \n"
"}\n"
"QPushButton:hover {\n"
"    \n"
"    border:4px double rgb(239,160,179);\n"
"    \n"
"}\n"
"\n"
"QPushButton:checked {\n"
"    \n"
"    \n"
"    background-color: rgb(193, 6, 255);\n"
"    \n"
"}")self.main_about_btn.setCheckable(False)self.main_about_btn.setObjectName("main_about_btn")self.main_reset_btn = QtWidgets.QPushButton(Form)self.main_reset_btn.setGeometry(QtCore.QRect(60, 60, 50, 50))self.main_reset_btn.setStyleSheet("QPushButton {\n"
"    border-radius:25px;\n"
"    background-color:rgb(253,167,255);\n"
"    border:2px solid rgb(226,226,226);\n"
"    color:white;\n"
"    \n"
"}\n"
"QPushButton:hover {\n"
"    \n"
"    border:4px double rgb(239,160,179);\n"
"    \n"
"}\n"
"\n"
"QPushButton:checked {\n"
"    \n"
"    \n"
"    background-color: rgb(193, 6, 255);\n"
"    \n"
"}")self.main_reset_btn.setCheckable(False)self.main_reset_btn.setObjectName("main_reset_btn")self.main_exit_btn = QtWidgets.QPushButton(Form)self.main_exit_btn.setGeometry(QtCore.QRect(10, 90, 50, 50))self.main_exit_btn.setStyleSheet("QPushButton {\n"
"    border-radius:25px;\n"
"    background-color:rgb(253,167,255);\n"
"    border:2px solid rgb(226,226,226);\n"
"    color:white;\n"
"    \n"
"}\n"
"QPushButton:hover {\n"
"    \n"
"    border:4px double rgb(239,160,179);\n"
"    \n"
"}\n"
"\n"
"QPushButton:checked {\n"
"    \n"
"    \n"
"    background-color: rgb(193, 6, 255);\n"
"    \n"
"}")self.main_exit_btn.setCheckable(False)self.main_exit_btn.setObjectName("main_exit_btn")self.widget = QtWidgets.QWidget(Form)self.widget.setGeometry(QtCore.QRect(150, 140, 211, 201))self.widget.setObjectName("widget")self.formLayout = QtWidgets.QFormLayout(self.widget)self.formLayout.setContentsMargins(0, 0, 0, 0)self.formLayout.setVerticalSpacing(20)self.formLayout.setObjectName("formLayout")self.label = QtWidgets.QLabel(self.widget)self.label.setStyleSheet("\n"
"font: 14pt \"楷体\";\n"
"color: rgb(255, 0, 0);")self.label.setObjectName("label")self.formLayout.setWidget(0, QtWidgets.QFormLayout.LabelRole, self.label)self.lineEdit = QtWidgets.QLineEdit(self.widget)self.lineEdit.setMinimumSize(QtCore.QSize(0, 30))self.lineEdit.setStyleSheet("background-color:transparent;\n"
"color: rgb(255, 0, 127);\n"
"font: 16pt \"宋体\";")self.lineEdit.setText("")self.lineEdit.setObjectName("lineEdit")self.formLayout.setWidget(0, QtWidgets.QFormLayout.FieldRole, self.lineEdit)self.label_2 = QtWidgets.QLabel(self.widget)self.label_2.setStyleSheet("\n"
"font: 14pt \"楷体\";\n"
"color: rgb(255, 0, 0);")self.label_2.setObjectName("label_2")self.formLayout.setWidget(1, QtWidgets.QFormLayout.LabelRole, self.label_2)self.lineEdit_2 = QtWidgets.QLineEdit(self.widget)self.lineEdit_2.setMinimumSize(QtCore.QSize(0, 30))self.lineEdit_2.setStyleSheet("background-color:transparent;\n"
"color: rgb(255, 0, 127);\n"
"font: 16pt \"宋体\";")self.lineEdit_2.setText("")self.lineEdit_2.setObjectName("lineEdit_2")self.formLayout.setWidget(1, QtWidgets.QFormLayout.FieldRole, self.lineEdit_2)self.label_3 = QtWidgets.QLabel(self.widget)self.label_3.setStyleSheet("\n"
"font: 14pt \"楷体\";\n"
"color: rgb(255, 0, 0);")self.label_3.setObjectName("label_3")self.formLayout.setWidget(2, QtWidgets.QFormLayout.LabelRole, self.label_3)self.lineEdit_3 = QtWidgets.QLineEdit(self.widget)self.lineEdit_3.setMinimumSize(QtCore.QSize(0, 30))self.lineEdit_3.setStyleSheet("background-color:transparent;\n"
"color: rgb(255, 0, 127);\n"
"font: 16pt \"宋体\";")self.lineEdit_3.setObjectName("lineEdit_3")self.formLayout.setWidget(2, QtWidgets.QFormLayout.FieldRole, self.lineEdit_3)self.pushButton = QtWidgets.QPushButton(self.widget)sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Fixed)sizePolicy.setHorizontalStretch(0)sizePolicy.setVerticalStretch(0)sizePolicy.setHeightForWidth(self.pushButton.sizePolicy().hasHeightForWidth())self.pushButton.setSizePolicy(sizePolicy)self.pushButton.setMinimumSize(QtCore.QSize(0, 30))self.pushButton.setStyleSheet("QPushButton {\n"
"    \n"
"    background-color: rgb(255, 170, 127);\n"
"\n"
"}\n"
"QPushButton:hover {\n"
"    background-color: rgb(255, 231, 215);\n"
"\n"
"}\n"
"QPushButton:pressed {\n"
"    \n"
"    background-color: rgb(168, 112, 83);\n"
"\n"
"}\n"
"")self.pushButton.setObjectName("pushButton")self.formLayout.setWidget(3, QtWidgets.QFormLayout.FieldRole, self.pushButton)self.label.raise_()self.label_2.raise_()self.label_3.raise_()self.lineEdit.raise_()self.lineEdit_2.raise_()self.lineEdit_3.raise_()self.pushButton.raise_()self.main_about_btn.raise_()self.main_reset_btn.raise_()self.main_exit_btn.raise_()self.main_menu_btn.raise_()self.retranslateUi(Form)self.main_menu_btn.clicked['bool'].connect(Form.show_hide_menu) # type: ignoreself.main_about_btn.clicked.connect(Form.about_like) # type: ignoreself.main_reset_btn.clicked.connect(Form.reset_menu) # type: ignoreself.main_exit_btn.clicked.connect(Form.exit_pang) # type: ignoreself.pushButton.clicked.connect(Form.check_register) # type: ignoreQtCore.QMetaObject.connectSlotsByName(Form)def retranslateUi(self, Form):_translate = QtCore.QCoreApplication.translateForm.setWindowTitle(_translate("Form", "Form"))self.main_menu_btn.setText(_translate("Form", "菜单"))self.main_about_btn.setText(_translate("Form", "关于"))self.main_reset_btn.setText(_translate("Form", "重置"))self.main_exit_btn.setText(_translate("Form", "退出"))self.label.setText(_translate("Form", "账   号："))self.label_2.setText(_translate("Form", "密    码:"))self.label_3.setText(_translate("Form", "确认密码:"))self.pushButton.setText(_translate("Form", "注册"))
import register_rc

逻辑代码


from PyQt5.Qt import *
from 计算器实战项目.resource.register import Ui_Formclass Window(QWidget,Ui_Form):def __init__(self):super().__init__()self.setAttribute(Qt.WA_StyledBackground,True)self.setupUi(self)self.animation_targets=[self.main_about_btn,self.main_reset_btn,self.main_exit_btn]self.animation_targets_pos=[target.pos() for target in self.animation_targets]def show_hide_menu(self,checked):print(checked)if checked:animation_group = QSequentialAnimationGroup(self)for index,target in enumerate(self.animation_targets):anition=QPropertyAnimation()anition.setTargetObject(target)anition.setPropertyName(b"pos")anition.setStartValue(self.main_menu_btn.pos())anition.setEndValue(self.animation_targets_pos[index])anition.setDuration(100)anition.setEasingCurve(QEasingCurve.InOutBounce)animation_group.addAnimation(anition)animation_group.start(QAbstractAnimation.DeleteWhenStopped)else:animation_group = QSequentialAnimationGroup(self)for index, target in enumerate(self.animation_targets):anition = QPropertyAnimation()anition.setTargetObject(target)anition.setPropertyName(b"pos")anition.setEndValue(self.main_menu_btn.pos())anition.setStartValue(self.animation_targets_pos[index])anition.setDuration(100)anition.setEasingCurve(QEasingCurve.InOutBounce)animation_group.addAnimation(anition)animation_group.start(QAbstractAnimation.DeleteWhenStopped)def about_like(self):print("about")passdef reset_menu(self):print("reset")passdef exit_pang(self):print("exit")passdef check_register(self):print("check_reg")passif __name__ == '__main__':import sysapp=QApplication(sys.argv)win=Window()win.show()sys.exit(app.exec_())

上面动画组代码简化如下：

def show_hide_menu(self,checked):animation_group = QSequentialAnimationGroup(self)for index,target in enumerate(self.animation_targets):anition=QPropertyAnimation()anition.setTargetObject(target)anition.setPropertyName(b"pos")if checked:anition.setStartValue(self.main_menu_btn.pos())anition.setEndValue(self.animation_targets_pos[index])else:anition.setEndValue(self.main_menu_btn.pos())anition.setStartValue(self.animation_targets_pos[index])anition.setDuration(100)anition.setEasingCurve(QEasingCurve.InOutBounce)animation_group.addAnimation(anition)animation_group.start(QAbstractAnimation.DeleteWhenStopped)

利用动画组自带API参数设置动画状态

    def show_hide_menu(self,checked):animation_group = QSequentialAnimationGroup(self)for index,target in enumerate(self.animation_targets):anition=QPropertyAnimation()anition.setTargetObject(target)anition.setPropertyName(b"pos")anition.setStartValue(self.main_menu_btn.pos())anition.setEndValue(self.animation_targets_pos[index])anition.setDuration(100)anition.setEasingCurve(QEasingCurve.InOutBounce)animation_group.addAnimation(anition)if checked:animation_group.setDirection(QAbstractAnimation.Forward)else:animation_group.setDirection(QAbstractAnimation.Backward)animation_group.start(QAbstractAnimation.DeleteWhenStopped)

优化动画组代码

 def show_hide_menu(self,checked):animation_group = QSequentialAnimationGroup(self)for index,target in enumerate(self.animation_targets):anition=QPropertyAnimation()anition.setTargetObject(target)anition.setPropertyName(b"pos")anition.setStartValue(self.main_menu_btn.pos())anition.setEndValue(self.animation_targets_pos[index])anition.setDuration(100)anition.setEasingCurve(QEasingCurve.OutBounce)animation_group.addAnimation(anition)animation_group.setDirection(not checked)animation_group.start(QAbstractAnimation.DeleteWhenStopped)
#QAbstractAnimation.Forward 实际为枚举值,checked也是布尔值，可以把这两个给关联起来。上面代码就可以这样写了
'''
Backward = 1DeleteWhenStopped = 1Forward = 0KeepWhenStopped = 0Paused = 1Running = 2Stopped = 0
'''

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