Saturday, April 23, 2022

Upgrade 01: PyQt6 Desktop App Template

This demo program shows another way to implement the Desktop App Template using modularized approach(I created the import.py to handle import common libraries of the the window files(splash, login, mainw), a sidebar menu has been added which is from the previous post "Create Treeview with PyQt6" and I added a progress bar at the newly added status of the login screen of which code is derrived from my previous post "Progressbar with PyQt6".  If you prefer the old version you may still access it with the original post.

The Output:


 

The Code

imports.py:

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import PyQt6.QtWidgets   as a
import PyQt6.QtCore as f
import PyQt6.QtGui as g
import PyQt6 as p
import sys as s
import os as o
import time as t
__all__ = [
    'a', 'f', 'g', 'p', 's', 'o', 't'
]

 

splash.py:

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from imports import *
from login import WindowApp
class SplashScreen(a.QWidget):
    def __init__(self, parent=None):
        super().__init__()
        self.setFixedSize(700, 350)
        self.setWindowFlag(f.Qt.WindowType.FramelessWindowHint)
        self.setAttribute(f.Qt.WidgetAttribute.WA_TranslucentBackground)
        self.counter = 0
        self.n = 100 
        self.initUI()
        self.timer = f.QTimer()
        self.timer.timeout.connect(self.loading)
        self.timer.start(30)
    def initUI(self):
        # layout to display splash scrren frame
        layout = a.QVBoxLayout()
        self.setLayout(layout)
        # splash screen frame
        self.frame = a.QFrame()
        layout.addWidget(self.frame)
        # splash screen title
        self.title_label = a.QLabel(self.frame)
        self.title_label.setObjectName('title_label')
        self.title_label.resize(690, 120)
        self.title_label.move(0, 5) # x, y
        self.title_label.setText('Your World Famous App')
        self.title_label.setAlignment(f.Qt.AlignmentFlag.AlignCenter)
        # splash screen title description
        self.description_label = a.QLabel(self.frame)
        self.description_label.resize(690, 40)
        self.description_label.move(0, self.title_label.height())
        self.description_label.setObjectName('desc_label')
        self.description_label.setText('<b>We build the systems and the apps.</b>')
        self.description_label.setAlignment(f.Qt.AlignmentFlag.AlignCenter)
        # splash screen pogressbar
        self.progressBar = a.QProgressBar(self.frame)
        self.progressBar.resize(self.width() - 200 - 10, 50)
        self.progressBar.move(100, 180) # self.description_label.y()+130
        self.progressBar.setAlignment(f.Qt.AlignmentFlag.AlignCenter)
        self.progressBar.setFormat('%p%')
        self.progressBar.setTextVisible(True)
        self.progressBar.setRange(0, self.n)
        self.progressBar.setValue(20)
        self.progressBar.setStyleSheet("""QProgressBar {
            background-color: #000000;
            color: #9B2F6A;
            border-style: none;
            border-radius: 5px;
            text-align: center;
            font-size: 25px;
        }
        QProgressBar::chunk {
            border-radius: 7px;
            background-color: qlineargradient(spread:pad x1:0, x2:1, y1:0.511364, y2:0.523, stop:0 #E1F01A);
        }""")
        # spash screen loading label
        self.loading_label = a.QLabel(self.frame)
        self.loading_label.resize(self.width() - 10, 50)
        self.loading_label.move(0, self.progressBar.y() + 70)
        self.loading_label.setObjectName('loading_label')
        self.loading_label.setAlignment(f.Qt.AlignmentFlag.AlignCenter)
        self.loading_label.setText('Loading...')
    def loading(self):
        # set progressbar value
        self.progressBar.setValue(self.counter)
        # stop progress if counter
        # is greater than n and
        # display main window app
        if self.counter >= self.n:
            self.timer.stop()
            self.close()
            t.sleep(1)
            self.showLogin()
        self.counter += 1
    def showLogin(self):
        self.login = WindowApp(self)
        self.login.show()    

if __name__ == "__main__":       
    app = a.QApplication(s.argv)
    app.setStyleSheet('''
        #title_label {
            font-size: 50px;
            color: #F0B21A;
        }
        #desc_label {
            font-size: 15px;
            color: #F0B21A;
        }
        #loading_label {
            font-size: 20px;
            color: #F0B21A;
        }
        QFrame {
            background-color: #2F339B;
            color: #c8c8c8;
        }
    ''')
    splash = SplashScreen()
    splash.show()
    s.exit(app.exec())

 

login.py:

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from imports import *
from mainw import Window2

TIME_LIMIT = 100
class WindowApp(a.QMainWindow):
    def __init__(self, parent=None):
        super().__init__()
        self.setWindowTitle("Login")
        self.setFixedSize(320, 245)
        self.quit = g.QAction("Quit", self)
        self.quit.triggered.connect(self.closeEvent)
        self.move(400, 200) 
        lblusr =  a.QLabel('UserName', self)
        lblusr.setStyleSheet('QLabel {background-color: transparent; color: black;}')
        lblusr.setGeometry(25, 55, 100, 30) 
        txtusr = a.QLineEdit('', self) 
        txtusr.setGeometry(100, 55, 150, 30)  
        lblpwd =  a.QLabel('Password', self)
        lblpwd.setStyleSheet('QLabel {background-color: transparent; color: black;}')
        lblpwd.setGeometry(25, 100, 100, 30) 
        txtpwd = a.QLineEdit('', self) 
        txtusr.setPlaceholderText("Enter Username Here")
        txtpwd.setPlaceholderText("Enter Password Here")
        txtpwd.setGeometry(100, 100, 150, 30) 
        txtpwd.setEchoMode(a.QLineEdit.EchoMode.Password)        
        pblogin = a.QPushButton('Login', self)
        pblogin.setGeometry(100, 165, 65, 25)
        pblogin.clicked.connect(self.onClick_pb3)  
        pbcanc = a.QPushButton('Cancel', self)
        pbcanc.setGeometry(180, 165, 65, 25)
        pbcanc.clicked.connect(self.onClick_pb4)  
        self.statusBar = a.QStatusBar()
        self.setStatusBar(self.statusBar)
        self.statusBar.showMessage("Ready", 5000)        
        #self.show()
        
        self.progressBar = a.QProgressBar()
        self.progressBar.setStyleSheet("""QProgressBar {
            background-color: transparent;
            color: #9B2F6A;
            border-style: none;
            border-radius: 5px;
            text-align: center;
            font-size: 10px;
        }
        QProgressBar::chunk {
            border-radius: 5px;
            background-color: qlineargradient(spread:pad x1:0, x2:1, y1:0.511364, y2:0.523, stop:0 #E1F01A);
        }""")
        self.statusBar.addPermanentWidget(self.progressBar)
        self.progressBar.move(30, 40)
        self.progressBar.setFixedSize(120, 20)
        #self.progressBar.setValue(100)
    def closeEvent(self, event):
        close = a.QMessageBox()
        close.setIcon(a.QMessageBox.Icon.Question)
        close.setWindowTitle('Pls confirm')
        close.setStyleSheet('QLabel {background-color: transparent; color: black;}')
        close.setText("Do you really want to quit?")
        close.setStandardButtons(a.QMessageBox.StandardButton.Yes | a.QMessageBox.StandardButton.Cancel)
        close = close.exec()

        if close == a.QMessageBox.StandardButton.Yes:
            event.accept()
        else:
            event.ignore()
    def onClick_pb3(self):
        count = 0
        while count < TIME_LIMIT:
            count += 1
            t.sleep(0.01)
            self.progressBar.setValue(count)
        self.showWindow2()
        #self.w = Window2()       
        #self.w.show()
        self.hide()
    def showWindow2(self):
        self.mdiwindow = Window2()
        self.mdiwindow.show()
    def onClick_pb4(self):
        self.quit 
        self.close()    
          
if __name__ == "__main__":       
    app = a.QApplication(s.argv)
    app.setStyleSheet('''        
        QProgressBar {
            background-color: #000000;
            color: #9B2F6A;
            border-style: none;
            border-radius: 4px;
            text-align: center;
            font-size: 10px;
        }
        QProgressBar::chunk {
            border-radius: 4px;
            background-color: qlineargradient(spread:pad x1:0, x2:1, y1:0.511364, y2:0.523, stop:0 #E1F01A);
        }
    ''')
    splash = WindowApp()
    splash.show()
    s.exit(app.exec())

mainw.py:

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from imports import *
x_init = 0
class StandardItem(g.QStandardItem):
    def __init__(self, txt='', font_size=12, set_bold=False, color=g.QColor(0, 0, 0), color1=g.QColor(0, 0, 0)):
        super().__init__()

        fnt = g.QFont('Open Sans', font_size)
        fnt.setBold(set_bold)

        self.setEditable(False)
        self.setForeground(color)
        self.setBackground(color1)
        self.setFont(fnt)
        self.setText(txt)
class Window2(a.QMainWindow):                          
    count = 0
    def __init__(self):
        super().__init__()
        self.installEventFilter(self)
        self.quit = g.QAction("Quit", self)
        self.quit.triggered.connect(self.closeEvent)
        self.mdi = a.QMdiArea()
        self.treeView = a.QTreeView()
        self.treeView.setHeaderHidden(True)

        treeModel = g.QStandardItemModel()
        rootNode = treeModel.invisibleRootItem()
        america = StandardItem('Accounting', 12, set_bold=True, color1=g.QColor('#4d88ff'))

        california = StandardItem(' Accounts Payable', 10, color1=g.QColor('#80aaff'))
        america.appendRow(california)

        oakland = StandardItem('   Vendors', 8, color=g.QColor('#3939ac'), color1=g.QColor('#b3ccff'))
        sanfrancisco = StandardItem('   Incoming Invoice', 8, color=g.QColor('#3939ac'), color1=g.QColor('#b3ccff'))
        sanjose = StandardItem('   Purchases', 8, color=g.QColor('#3939ac'), color1=g.QColor('#b3ccff'))

        california.appendRow(oakland)
        california.appendRow(sanfrancisco)
        california.appendRow(sanjose)


        texas = StandardItem(' Accounts Receivable', 10, color1=g.QColor('#80aaff'))
        america.appendRow(texas)

        austin = StandardItem('   Customers', 8, color=g.QColor('#3939ac'), color1=g.QColor('#b3ccff'))
        houston = StandardItem('   Outbound Invoices', 8, color=g.QColor('#3939ac'), color1=g.QColor('#b3ccff'))
        cali = StandardItem('   Dunning', 8, color=g.QColor('#3939ac'), color1=g.QColor('#b3ccff'))
        dallas = StandardItem('   Sales', 8, color=g.QColor('#3939ac'), color1=g.QColor('#b3ccff'))

        texas.appendRow(austin)
        texas.appendRow(houston)
        texas.appendRow(cali)
        texas.appendRow(dallas)


        # Canada 
        canada = StandardItem('Logistics', 12, set_bold=True, color1=g.QColor('#4d88ff'))

        alberta = StandardItem(' Inventory', 10, color1=g.QColor('#80aaff'))
        bc = StandardItem(' Materials', 10, color1=g.QColor('#80aaff'))
        ontario = StandardItem(' Deliveries', 10, color1=g.QColor('#80aaff'))
        canada.appendRows([alberta, bc, ontario])


        rootNode.appendRow(america)
        rootNode.appendRow(canada)

        self.treeView.setModel(treeModel)
        self.treeView.expandAll()
        self.treeView.doubleClicked.connect(self.getValue)
        self.treeView.setIndentation(0)
        self.treeView.setAlternatingRowColors(True)
        self.treeView.setFixedSize(160,self.height()-25)
        self.setCentralWidget(a.QWidget(self))
        windowLayout = a.QHBoxLayout(self)
        windowLayout.addWidget(self.treeView, alignment=f.Qt.AlignmentFlag.AlignTop)
        windowLayout.addWidget(self.mdi, alignment=f.Qt.AlignmentFlag.AlignTop)
        self.centralWidget().setLayout(windowLayout)
        #self.setCentralWidget(self.mdi)
        
        self.toolbar = a.QToolBar("Documents")
        self.toolbar.setMovable(False)
        toolbar1 = a.QToolBar("Messages")
        self.toolbar.setIconSize(f.QSize(30,30))
        toolbar1.setIconSize(f.QSize(30,30))
        self.addToolBar(self.toolbar)
        
        self.new_action = g.QAction(g.QIcon(r"c:\crud\icons\document--plus.png"), "&New", self)
        self.new_action.setStatusTip("New Document")
        self.new_action.triggered.connect(self.onNewClick)
        #button_action.setCheckable(True)
        self.new_action.setShortcut(g.QKeySequence("Ctrl+p"))
      
        chg_action = g.QAction(g.QIcon(r"c:\crud\icons\document--pencil.png"), "&Change", self)
        chg_action.setStatusTip("Change Document")
        chg_action.triggered.connect(self.onClick)
        chg_action.setCheckable(True)
        self.toolbar.addAction(self.new_action)
        self.toolbar.addAction(chg_action)       
        
        self.addToolBar(toolbar1)
        inbox_action = g.QAction(g.QIcon(r"c:\crud\icons\inbox--plus.png"), "&Add Message", self)
        inbox_action.setStatusTip("Add Message")
        inbox_action.triggered.connect(self.onClick)
        inbox_action.setCheckable(True)
        inbox_action.setShortcut(g.QKeySequence("Ctrl+m"))
        inbox_action1 = g.QAction(g.QIcon(r"c:\crud\icons\inbox--minus.png"), "&Remove Message", self)
        inbox_action1.setStatusTip("Remove Message")
        inbox_action1.triggered.connect(self.onClick)
        inbox_action1.setCheckable(True)
        inbox_action1.setShortcut(g.QKeySequence("Ctrl+n"))
        exit_action = g.QAction(g.QIcon(r"c:\crud\icons\door-open-out.png"), "&Exit", self)
        exit_action.setStatusTip("Exit")
        exit_action.triggered.connect(self.onExitClick)
        exit_action.setShortcut(g.QKeySequence("Ctrl+x"))
        toolbar1.addAction(inbox_action)
        toolbar1.addAction(inbox_action1)
        
        self.statusBar = a.QStatusBar()
        self.setStatusBar(self.statusBar)
        self.statusBar.showMessage("Ready", 3000)
        menu = self.menuBar()

        file_menu = menu.addMenu("&File")
        file_menu.addAction(self.new_action)
        file_menu.addAction(chg_action)
        file_menu.addSeparator()
        file_submenu = file_menu.addMenu("Messages")
        file_submenu.addAction(inbox_action)
        file_submenu.addAction(inbox_action1)
        file_menu.addSeparator()
        file_menu.addAction(exit_action)
        bar = self.menuBar()
		
        file = bar.addMenu("Window")
        file.addAction("Cascade")
        file.addAction("Tile")
        file.triggered[g.QAction].connect(self.click)
        
        tb = bar.addMenu("Toolbar")
        tb.addAction("Hide Documents Toolbar")
        tb.addAction("Unhide Documents Toolbar")
        tb.triggered[g.QAction].connect(self.click)
        tb1 = bar.addMenu("System")
        tb1.addAction("About This Template")
        tb1.triggered[g.QAction].connect(self.about)
        self.setGeometry(125,75,850,350)
        #windowLayout = QVBoxLayout(self)
        #windowLayout.addWidget(self.mdi, alignment=Qt.AlignmentFlag.AlignTop)
        self.setWindowTitle("The App System") 
    def resizeEvent(self, event):
                  
           self.treeView.setFixedSize(160,self.height()-102)
              
    def closeEvent(self, event):
        close = a.QMessageBox()
        close.setIcon(a.QMessageBox.Icon.Question)
        close.setWindowTitle('Pls confirm')
        close.setStyleSheet('QLabel {background-color: transparent; color: black;}')
        close.setText("Do you really want to quit?")
        close.setStandardButtons(a.QMessageBox.StandardButton.Yes | a.QMessageBox.StandardButton.Cancel)
        close = close.exec()

        if close == a.QMessageBox.StandardButton.Yes:
            event.accept()
        else:
            event.ignore()
    def getValue(self, val):
        print(val.data())
        print(val.row())
        print(val.column())
    def contextMenuEvent(self, event):
        menu = a.QMenu(self)
        menu.addAction(self.new_action)
        menu.exec(event.globalPos())        
    def onClick(self, s):
        print("click",s) 
    def onExitClick(self, s):
        self.quit 
        self.close()  
    def about(self, s):
        aboutm = a.QMessageBox()
        aboutm.setIcon(a.QMessageBox.Icon.Information)
        aboutm.setWindowTitle('Software Information')
        aboutm.setStyleSheet('QLabel {background-color: transparent; color: black;}')
        aboutm.setText("Title: Simple App Template \n Version: 1.00 \n Release Date: April 19, 2022")
        aboutm.setStandardButtons(a.QMessageBox.StandardButton.Ok)
        aboutm = aboutm.exec()         
    def onNewClick(self, s):       
        Window2.count = Window2.count+1
        sub = a.QMdiSubWindow()
        lbl1a =  a.QLabel('RECS', sub)
        lbl1a.setGeometry(25, 75, 50, 35)
        lbl1a.setStyleSheet('QLabel {background-color: #0E95A6; color: #d4d4d4;}')
        lbl1a.setAlignment(f.Qt.AlignmentFlag.AlignCenter)
        sub.setGeometry(25, 25, 200, 200)
        sub.setWindowTitle("subwindow"+str(Window2.count))
        self.mdi.addSubWindow(sub)
        sub.show()
    def click(self, q):                  
        if q.text() == "Cascade":
          self.mdi.cascadeSubWindows()
                    
        if q.text() == "Tile":
          self.mdi.tileSubWindows() 
          
        if q.text() == "Hide Documents Toolbar":
          self.toolbar.toggleViewAction().setChecked(True)
          self.toolbar.toggleViewAction().trigger() 
        if q.text() == "Unhide Documents Toolbar":
          self.toolbar.toggleViewAction().setChecked(False)
          self.toolbar.toggleViewAction().trigger()          
if __name__ == "__main__":       
    app = a.QApplication(s.argv)
 
    splash = Window2()
    splash.show()
    s.exit(app.exec())

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