pyside6总结

参考

1. Learn Python GUI Development for Desktop – PySide6 and Qt Tutorial

说明

1. PySide6编程可以分为两大类：QWidget 和 QML!

代码模块化

1. main.py

import sys
from PySide6.QtWidgets import QApplication
from button_holder import ButtonHolder

if __name__ == "__main__":
  app = QApplication(sys.argv)
  window = ButtonHolder()
  window.show()
  app.exec()

2. button_holder.py

from PySide6.QtWidgets import QMainWindow, QPushButton, QVBoxLayout

class ButtonHolder(QMainWindow):
  def __init__(self):
    super().__init__()
    self.setWindowTitle("Button Holder")
    button = QPushButton("Click Me")
    button.setCheckable(True)   # must for triggering toggled
    button.clicked.connect(self.on_click1)
    button.clicked.connect(self.on_click2)
    button.pressed.connect(self.on_press)
    button.released.connect(self.on_release)
    button.toggled.connect(self.on_toggled)   
    self.setCentralWidget(button)
  
  def on_click1(self):
    print("Button clicked")
  
  def on_click2(self, state: bool):  # seems same with toggled
    print("Button clicked:", state)

  def on_press(self):
    print("Button pressed")
  
  def on_release(self):
    print("Button released")
  
  def on_toggled(self, state: bool):  # only triggered by checkable button
    print("Button toggled:", state)

QMainWindow和QWidget区别

1. QMainWindow比QWidget多了菜单栏，工具栏，状态栏；
2. 在向主窗体添加元素(比如按钮)时，QMainWindow可以直接通过setCentralWidget()实现；而QWidget需要通过Layout间接实现；

通过Label显示图片

将UI文件编译成Python文件

1. 在Qt Designer的Resource Browser里面创建一个资源文件，然后在资源文件中添加需要显示的图片；
2. 在Qt Designer添加一个QLabel，在其pixmap属性中添加图片；
3. 通过pyside6-rcc.exe -o image_rc.py .\image.qrc将资源文件编译成py文件；(注意命名规则：必须是xxx_rc.py，xxx是第一步中创建的资源文件的文件名)
4. 通过pyside6-uic.exe -o ui_test.py .\test.ui将UI文件编译成py文件；
5. 通过以下代码导入UI：

from PySide6.QtWidgets import QApplication, QWidget
from ui_test import Ui_Form     # ui_test 参考步骤4中生成的文件名； Ui_Form 参考 ui_test.py 文件中的类名；

class MainWindow(QWidget, Ui_Form):
    def __init__(self):
        super().__init__()
        self.setupUi(self)

app = QApplication([])
window = MainWindow()
window.show()
app.exec()

直接导入UI文件

1. 在Qt Designer的Resource Browser里面创建一个资源文件，然后在资源文件中添加需要显示的图片；
2. 在Qt Designer添加一个QLabel，在其pixmap属性中添加图片；

复选框和单选框

1. widget.py

from PySide6.QtWidgets import QWidget, QCheckBox, QRadioButton, QHBoxLayout, QVBoxLayout, QGroupBox, QButtonGroup

class Widget(QWidget):
  def __init__(self):
    super().__init__()

    os = QGroupBox("Choose operating system")
    win = QCheckBox("Windows")
    win.clicked.connect(self.win_checked)
    win.setChecked(True)
    linux = QCheckBox("Linux")
    mac = QCheckBox("Mac")

    os_layout = QVBoxLayout()
    os_layout.addWidget(win)
    os_layout.addWidget(linux)
    os_layout.addWidget(mac)
    os.setLayout(os_layout)

    drink = QGroupBox("Choose your favorite drink")
    beer = QCheckBox("Beer")
    beer.toggled.connect(self.beer_checked)
    juice = QCheckBox("Juice")
    coffee = QCheckBox("Coffee")
    beer.setChecked(True)

    exclusive_btn = QButtonGroup(self)  # must self
    exclusive_btn.addButton(beer)
    exclusive_btn.addButton(juice)
    exclusive_btn.addButton(coffee)
    exclusive_btn.setExclusive(True)
    # exclusive_btn.buttonClicked.connect(self.exclusive_checked)
    
    drink_layout = QVBoxLayout()
    drink_layout.addWidget(beer)
    drink_layout.addWidget(juice)
    drink_layout.addWidget(coffee)
    drink.setLayout(drink_layout)

    answer = QGroupBox("Answer")
    answerA = QRadioButton("A")
    answerA.clicked.connect(self.answerA_checked)
    answerB = QRadioButton("B")
    answerC = QRadioButton("C")
    answer_layout = QVBoxLayout()
    answer_layout.addWidget(answerA)
    answer_layout.addWidget(answerB)
    answer_layout.addWidget(answerC)
    answer.setLayout(answer_layout)

    h_layout = QHBoxLayout()
    h_layout.addWidget(os)
    h_layout.addWidget(drink)
    
    v_layout = QVBoxLayout()
    v_layout.addLayout(h_layout)
    v_layout.addWidget(answer)

    self.setLayout(v_layout)

  def win_checked(self):
    if self.sender().isChecked():
      print("Windows is checked")

  def beer_checked(self):
    if self.sender().isChecked():
      print(self.sender().text() + " is checked")

  def answerA_checked(self):
    if self.sender().isChecked():
      print(self.sender().text() + " is checked")

  def exclusive_checked(self):	# How to get the sender info?
    print(self.sender())

2. main.py

import sys
from PySide6.QtWidgets import QApplication
from widget import Widget

app = QApplication(sys.argv)
window = Widget()
window.show()
app.exec()