qt - 无法更改自定义QListView行的突出显示的文本颜色

Question

由于某些奇怪的原因，无法覆盖QListView中突出显示的文本颜色。效果很好（突出显示的文本颜色会自动更改为白色），直到我定义了自己的小部件来代表一行为止。

现在，我可以更改所选行的背景颜色和其他一些视觉效果，但是文本颜色始终保持默认的黑色。

已经尝试使用QSS，QPalette和data() / Qt.ForegroundRole进行所有可能的操作-技巧无济于事。

这是一个简化的代码，仍然受到OS X问题的困扰。不幸的是，我没有机会在Windows或GNU/Linux上进行测试。

from PySide.QtCore import *
from PySide.QtGui import *
import sys

view = None
mapp = {}

style = '''
QListView {
    show-decoration-selected: 1;
    selection-color: white;
    selection-background-color: #0068d9;
}

QListView::item:selected:active:hover{
    background-color:red; color: white;
}
QListView::item:selected:active:!hover{
    background-color: #0068d9; color: white;
}
QListView::item:selected:!active{
    background-color:yellow; color: white;
}
QListView::item:!selected:hover{
    background-color:green; color: white;
}
'''

class SimpleListModel(QAbstractListModel):

    def __init__(self, mlist):
        QAbstractListModel.__init__(self)
        self._items = mlist

    def rowCount(self, parent = QModelIndex()):
        return len(self._items)

    def index(self, row, column, parent=QModelIndex()):
        node = self._items[row]

        if not(str(row) in mapp):
            index = self.createIndex(row, column)
            widget = QLabel(node)
            view.setIndexWidget(index, widget)
            mapp[str(row)] = index
            return index

        return mapp[str(row)]

    def data(self, index, role = Qt.DisplayRole):
        return None

    def flags(self, index):
        return Qt.ItemIsSelectable | Qt.ItemIsEnabled    

class MyMainWindow(QWidget):
    def __init__(self):
        global view
        QWidget.__init__(self, None)

        self._model = SimpleListModel(["test", "tes1t", "t3est", "t5est", "t3est"])

        vbox = QVBoxLayout()
        view = QListView()
        view.setModel(self._model)
        vbox.addWidget(view)
        self.setLayout(vbox)

        view.setStyleSheet(style)

        first = self._model.index(0, 0)
        view.setCurrentIndex(first)


if __name__ == '__main__':
    app = QApplication(sys.argv)
    w = MyMainWindow()
    w.show()
    w.raise_()
    app.exec_()
    sys.exit()

Answer 1

不是最干净或最好的解决方案，但这是我经过一些调整后得出的。

结果：



蓝色项目是选中的项目。绿色项目是悬停的项目。

码：

from PySide.QtCore import *
from PySide.QtGui import *
import sys

view = None
mapp = {}

style = '''
QListView {
    show-decoration-selected: 1;
    selection-color: white;
    selection-background-color: #0068d9;
}

QListView::item:selected:active:hover{
    background-color:red; color: white;
}
QListView::item:selected:active:!hover{
    background-color: #0068d9; color: white;
}
QListView::item:selected:!active{
    background-color:yellow; color: white;
}
QListView::item:!selected:hover{
    background-color:green; color: white;
}
'''

class SimpleListModel(QAbstractListModel):

    def __init__(self, mlist):
        QAbstractListModel.__init__(self)
        self._items = mlist

    def rowCount(self, parent = QModelIndex()):
        return len(self._items)

    def index(self, row, column, parent=QModelIndex()):
        node = self._items[row]

        if not(str(row) in mapp):
            index = self.createIndex(row, column)
            widget = QLabel(node)
            view.setIndexWidget(index, widget)

            mapp[str(row)] = index
            return index


        return mapp[str(row)]

    def data(self, index, role = Qt.DisplayRole):
        # The following code shouldn't be put in this function but i'm in a hurry right now...
        selectedIndexes = view.selectedIndexes()

        # Set all items to black
        for i in range(0, self.rowCount()):
            currentRowIndex = self.index(i, 0, QModelIndex())
            myWidget = view.indexWidget(currentRowIndex)
            myWidget.setStyleSheet("color: black")

        # Set selected items to white
        for i in selectedIndexes:
            myWidget = view.indexWidget(i)
            myWidget.setStyleSheet("color: white")

        return None

    def flags(self, index):
        return Qt.ItemIsSelectable | Qt.ItemIsEnabled    

class MyMainWindow(QWidget):
    def __init__(self):
        global view
        QWidget.__init__(self, None)

        self._model = SimpleListModel(["test", "tes1t", "t3est", "t5est", "t3est"])

        vbox = QVBoxLayout()
        view = QListView()
        view.setModel(self._model)
        vbox.addWidget(view)
        self.setLayout(vbox)

        view.setStyleSheet(style)

        first = self._model.index(0, 0)
        view.setCurrentIndex(first)


if __name__ == '__main__':
    app = QApplication(sys.argv)
    w = MyMainWindow()
    w.show()
    w.raise_()
    app.exec_()
    sys.exit()

如果有我听不懂或代码不清楚的地方，请告诉我。