[QCombobox搜索] 下拉框自定义搜索功能，加到QGraphicsScene中后，搜索出来的内容弹框位置不对，不在下拉框的下方，这个有什么办法吗

[richiy]

SearchableCombo.zip

[892768447]

我测试是显示后。点击下拉菜单后 会自动往上移动一点。下拉位置正确

# -*- coding: utf-8 -*-
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtCore import Qt, QSortFilterProxyModel, QRect
from PyQt5.QtWidgets import QCompleter, QComboBox, QLineEdit, QGraphicsView, QGraphicsScene


class SearchableComboBox(QComboBox):
    def __init__(self, parent=None):
        super(SearchableComboBox, self).__init__(parent)

        self.setFocusPolicy(Qt.StrongFocus)
        self.setEditable(True)

        # add a filter model to filter matching items
        self.pFilterModel = QSortFilterProxyModel(self)
        self.pFilterModel.setFilterCaseSensitivity(Qt.CaseInsensitive)
        self.pFilterModel.setSourceModel(self.model())

        # add a completer, which uses the filter model
        self.completer = Completer(self.pFilterModel, self)
        # always show all (filtered) completions
        # self.completer.setCompletionMode(QCompleter.PopupCompletion)
        self.setCompleter(self.completer)

        # connect signals
        self.lineEdit().textEdited.connect(self.pFilterModel.setFilterFixedString)
        self.completer.activated.connect(self.on_completer_activated)

    # on selection of an item from the completer, select the corresponding item from combobox
    def on_completer_activated(self, text):
        if text:
            index = self.findText(text)
            self.setCurrentIndex(index)
            self.activated[str].emit(self.itemText(index))

    # on model change, update the models of the filter and completer as well
    def setModel(self, model):
        super(SearchableComboBox, self).setModel(model)
        self.pFilterModel.setSourceModel(model)
        self.completer.setModel(self.pFilterModel)

    # on model column change, update the model column of the filter and completer as well
    def setModelColumn(self, column):
        self.completer.setCompletionColumn(column)
        self.pFilterModel.setFilterKeyColumn(column)
        super(SearchableComboBox, self).setModelColumn(column)


class Completer(QCompleter):

    def complete(self, rect):
        # rect = QRect(0, 0, 100, 100)
        super(Completer, self).complete(rect)
        self.popup().setGeometry(1000,1000,100,100)


if __name__ == "__main__":
    import sys
    from PyQt5.QtWidgets import QApplication
    from PyQt5.QtCore import QStringListModel

    app = QApplication(sys.argv)

    string_list = ['语文 Chinese', '数学 Mathematics', '英语 English']

    combo = SearchableComboBox()

    # either fill the standard model of the combobox
    combo.addItems(string_list)

    # or use another model
    #combo.setModel(QStringListModel(string_list))

    combo.resize(300, 40)
    #combo.show()
    
    view = QGraphicsView()
    view.resize(800, 600)
    scene = QGraphicsScene(view)
    view.setScene(scene)
    view.show()
    w = scene.addWidget(combo)
    print(w)

    sys.exit(app.exec_())