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MAXIM045
Asked:2020-03-31 21:14:58 +0800 CST2020-03-31 21:14:58 +0800 CST

如何优化容器的创建？

  • 772

在循环体中，我需要创建不少具有完全相同特征但内容不同的容器。

这目前分三个阶段进行：

  1. 已创建QWidget
  2. 某些外部特性被设置为QWidget
  3. 一个新的容器被创建并绑定到QWidget

循环重复一定次数（总是不同的）。

这让我很感兴趣，也许可以提前为容器制作一个模板，而不是每次都重新创建它？如果可能，请帮我优化代码。

from PyQt5 import QtCore, QtWidgets, QtGui

class MyWindow(QtWidgets.QWidget):
    def __init__(self, parent = None):
        super().__init__(parent)

        self.main_box = QtWidgets.QVBoxLayout(self)

        self.make()

    def make(self):
        for i in range(0, 5):
            container = QtWidgets.QWidget()
            container.setStyleSheet(box_qss)
            container.setFixedHeight(50)
            song_box = QtWidgets.QHBoxLayout(container)
            self.main_box.addWidget(container)        


box_qss = '''QWidget {
                 background-color: #1F252F;
                 border-radius: 5px;
             }'''


if __name__ == '__main__':
    import sys
    app = QtWidgets.QApplication(sys.argv)
    window = MyWindow()
    window.setWindowTitle(' ')
    window.show()
    sys.exit(app.exec_())

UPD：每个容器将有一个按钮和两个铭文（每个铭文的文字会有所不同）：

from PyQt5 import QtCore, QtWidgets, QtGui

class MyWindow(QtWidgets.QWidget):
    def __init__(self, parent = None):
        super().__init__(parent)

        self.main_box = QtWidgets.QVBoxLayout(self)

        self.make()

    def make(self):
        for i in range(0, 5):
            container = QtWidgets.QWidget()
            container.setStyleSheet(box_qss)
            container.setFixedHeight(50)
            song_box = QtWidgets.QHBoxLayout(container)
            self.main_box.addWidget(container)

            btn = QtWidgets.QPushButton('Button')
            btn.setStyleSheet(btn_qss)
            song_box.addWidget(btn)

            label = QtWidgets.QLabel('Text')
            label.setStyleSheet(label_qss)
            song_box.addWidget(label)

            duration = QtWidgets.QLabel('00:00')
            duration.setStyleSheet(label_qss)
            song_box.addWidget(duration)


box_qss = '''QWidget {
                 background-color: #1F252F;
                 border-radius: 5px;
             }'''

label_qss = '''QLabel {
                   color: white;
               }'''

btn_qss = '''QPushButton {
                 background-color: #3A4256;
                 color: white;
             }'''


if __name__ == '__main__':
    import sys
    app = QtWidgets.QApplication(sys.argv)
    window = MyWindow()
    window.setWindowTitle(' ')
    window.show()
    sys.exit(app.exec_())
python

1 个回答

  1. Best Answer

    我建议这样尝试：

    from random import randint
from PyQt5 import QtCore, QtWidgets, QtGui

class Widget(QtWidgets.QWidget):
    def __init__(self, list_album, parent=None):
        super(Widget, self).__init__(parent)

        self.song_box = QtWidgets.QGridLayout(self)
        self.song_box.setContentsMargins(0, 0, 0, 0)

        for i, text in enumerate(list_album):
            button = QtWidgets.QPushButton(f"Button {i+1}", 
                minimumWidth=70,             
                minimumHeight=50,
                clicked=lambda ch, t=text[0]: self.onButton(t))  
            label = QtWidgets.QLabel(
                f'{text[0]} - {text[1]}', alignment = QtCore.Qt.AlignCenter)

            self.song_box.addWidget(button, i, 0)
            self.song_box.addWidget(label, i, 1)

    def onButton(self, text):
        print(f"Выбрали песню {text}")


class MyWindow(QtWidgets.QWidget):
    def __init__(self, music_album, parent = None):
        super(MyWindow,self).__init__(parent)

        self.music_album = music_album
        self.container = None

        self.main_box = QtWidgets.QGridLayout(self)
        self.button = QtWidgets.QPushButton('Выберите Music Album', minimumHeight=50, clicked=self.make)
        self.main_box.addWidget(self.button, 111, 0, QtCore.Qt.AlignBottom)

    def make(self):
        num_album = randint(1, len(self.music_album))    # выбираем случайный альбом
        list_album = self.music_album[num_album]
        if self.container:
            self.container.deleteLater()

        self.container = Widget(list_album, self)
        self.main_box.addWidget(self.container, 1, 0)



qss = '''
QWidget {
    background-color: #1F252F;
    border-radius: 5px;
}
QLabel {
    color: white;
}
QPushButton {
    background-color: #3A4256;
    color: white;
}
'''

# Какие-то альбомы с какими-то песнями
music_album = {
1: (('Text1', '00:00'), ('Text2', '00:02'), ('Text3', '00:03'), ('Text4', '00:04'), ('Text5', '00:05'),),
2: (('Text21', '00:00'), ('Text22', '00:02'), ('Text23', '00:03'), ('Text24', '00:03'),),
3: (('Text31', '00:00'), ('Text32', '00:02'), ('Text33', '00:03'), ),
4: (('Text41', '00:00'), ('Text42', '00:02'),),
5: (('Text51', '00:00'),),
}


if __name__ == '__main__':
    import sys
    app = QtWidgets.QApplication(sys.argv)
    app.setStyleSheet(qss)                          # <<<=====<
    window = MyWindow(music_album)
    window.setWindowTitle(' ')
    window.resize(250, 370)
    window.show()
    sys.exit(app.exec_())

    在此处输入图像描述

    如果你有任何问题，写，我会评论。

    • 1

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