如何使QListWidgetItem自动调整其内容大小并适合其QListWidget

Question

以下是我试图设计的单个项目的弹性布局：

请在下面找到我用来在QlistWidget中显示自定义QListWidgetItem的代码。 但布局与预期不符：

• 自定义小部件不适合列表的宽度，我不想要水平滚动条
• 即使setWordWrap设置为True，long description也不会显示整个文本，而是在其高度上进行剪切

守则：

from PyQt5 import QtWidgets
from PyQt5.QtWidgets import *

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.resize(400, 500)
        self.centralwidget = QWidget(MainWindow)
        self.gridLayout = QGridLayout(self.centralwidget)
        self.listWidget = QListWidget(self.centralwidget)
        self.gridLayout.addWidget(self.listWidget, 0, 0, 1, 1)
        MainWindow.setCentralWidget(self.centralwidget)

class customWidget(QWidget):
    def __init__ (self, name, date, desc, parent = None):
        super(customWidget, self).__init__(parent)
        
        # feed labels
        self.labelName = QLabel(name)
        self.labelName.setFrameShape(QFrame.Box)
        self.labelName.setStyleSheet('''font: bold;''')

        self.labelDate = QLabel(date)
        self.labelDate.setFrameShape(QFrame.Box)

        self.labelDesc = QLabel(desc)
        self.labelDesc.setFrameShape(QFrame.Box)
        self.labelDesc.setWordWrap(True)

        # layout
        self.Hlayout = QHBoxLayout()
        self.Hlayout.addWidget(self.labelName)
        self.Hlayout.addStretch()
        self.Hlayout.addWidget(self.labelDate)

        self.Vlayout = QVBoxLayout()
        self.Vlayout.addLayout(self.Hlayout)
        self.Vlayout.addWidget(self.labelDesc)
        
        self.setLayout(self.Vlayout)

def feed_list():
    myArray = [
        ("paul meneck", "21/09/1969", "blond whith red hat"),
        ("boby la pointe", "16/08/1972", "brown shoes"),
        ("julius con-meraz de la fuego", "07/12/1980","this is a very long description"
            "with more and more bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla "
            "bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla "
            "bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla "
            "and finaly the END OF THAT LONG DESCRIPTION"),
        ("roberto umportes", "14/01/1957", "another description for that roberto")
    ]
    for var in myArray:
        item = QListWidgetItem()
        widget = customWidget(var[0], var[1], var[2])
        item.setSizeHint(widget.sizeHint())
        ui.listWidget.addItem(item)
        ui.listWidget.setItemWidget(item, widget)

if __name__ == "__main__":
    import sys
    app = QApplication(sys.argv)
    MainWindow = QMainWindow()
    ui = Ui_MainWindow()
    ui.setupUi(MainWindow)
    MainWindow.show()
    feed_list()
    sys.exit(app.exec_())

Answer 1

如果必须使用QListWidget，则只需提供所需方向的提示

小部件返回的sizeHint始终是推荐的大小，aka是最佳大小，以确保所有小部件具有正确的大小来显示其内容（通常大于最小大小）

相反，项目视图的sizeHint是项目将使用的默认大小，并且由于QListWidget没有水平头，因此没有直接的方法将内容“拉伸”到小于提示的大小

解决方案是通过将其值设置为-1，使您不感兴趣的大小提示的方向无效：

    widget = customWidget(var[0], var[1], var[2])
    hint = widget.sizeHint()
    hint.setWidth(-1)
    item.setSizeHint(hint)