覆盖 QCompleter 弹出位置
Overriding QCompleter popup position
有人问过关于覆盖 QCompleter 弹出窗口位置的类似问题,但我仍然找不到有效的解决方案。我只是想将弹出窗口向下移动 5px 左右(我有一些特定的样式要求)
我已经尝试子类化 QListView 并使用 setPopup() 将其用作我的弹出窗口。然后我覆盖 showEvent 并在 Y 中向下移动弹出窗口。我也在 resizeEvent 上执行此操作,因为我相信这是在过滤项目和调整弹出窗口大小时触发的。但是这不起作用.. 然后我使用单次计时器在 1 毫秒后触发移动。这确实有点工作,但它看起来很不一致 - 第一次显示与后续时间或调整大小不同。
以下是我最近的尝试(试图通过计算弹出窗口的数量来破解它..),希望有人能告诉我我做错了什么或更好的解决方案
import sys
import os
from PySide2 import QtCore, QtWidgets, QtGui
class QPopup(QtWidgets.QListView):
def __init__(self, parent=None):
super(QPopup, self).__init__(parent)
self.popups = 0
def offset(self):
y = 3 if self.popups < 2 else 7
print('y: {}'.format(y))
self.move(self.pos().x(), self.pos().y() + y)
self.popups += 1
def showEvent(self, event):
print('show')
# self.offset()
QtCore.QTimer.singleShot(1, self.offset)
def resizeEvent(self, event):
print('resize')
# self.offset()
QtCore.QTimer.singleShot(1, self.offset)
class MyDialog(QtWidgets.QDialog):
def __init__(self, parent=None):
super(MyDialog, self).__init__(parent)
self.create_widgets()
self.create_layout()
self.create_connections()
def create_widgets(self):
self.le = QtWidgets.QLineEdit('')
self.completer = QtWidgets.QCompleter(self)
self.completer.setCaseSensitivity(QtCore.Qt.CaseInsensitive)
self.completer.setCompletionMode(QtWidgets.QCompleter.PopupCompletion)
self.completer.setMaxVisibleItems(10)
self.completer.setFilterMode(QtCore.Qt.MatchContains)
self.completer.setPopup(QPopup())
popup = QPopup(self)
self.completer.setPopup(popup)
self.model = QtCore.QStringListModel()
self.completer.setModel(self.model)
self.le.setCompleter(self.completer)
self.completer.model().setStringList(['one','two','three'])
def create_layout(self):
main_layout = QtWidgets.QVBoxLayout(self)
main_layout.addWidget(self.le)
def create_connections(self):
pass
if __name__ == "__main__":
app = QtWidgets.QApplication(sys.argv)
my_dialog = MyDialog()
my_dialog.show() # Show the UI
sys.exit(app.exec_())
一个解决方案可能是创建 QLineEdit 的子类并覆盖 keyPressEvent 以显示带有偏移量的弹出窗口:
PySide2.QtWidgets.QCompleter.complete([rect=QRect()])
For PopupCompletion and QCompletion::UnfilteredPopupCompletion modes, calling this function displays the popup displaying the current completions. By default, if rect is not specified, the popup is displayed on the bottom of the widget() . If rect is specified the popup is displayed on the left edge of the rectangle.
参见 doc.qt.io -> QCompleter.complete。
完成,self-contained示例
rect是根据光标rect的y-position计算出来的。弹出窗口的高度 window 没有改变。宽度调整为 ZLineEdit 小部件的宽度。
rect = QtCore.QRect(0,
self.cursorRect().y() + 4,
self.width(),
self.completer().widget().height())
您的代码,使用上述几点稍作修改,可能如下所示:
import sys
from PySide2 import QtCore, QtWidgets
from PySide2.QtWidgets import QLineEdit, QDialog, QCompleter
class ZLineEdit(QLineEdit):
def __init__(self, string, parent=None):
super().__init__(string, parent)
def keyPressEvent(self, event):
super().keyPressEvent(event)
if len(self.text()) > 0:
rect = QtCore.QRect(0,
self.cursorRect().y() + 4,
self.width(),
self.completer().widget().height())
self.completer().complete(rect)
class MyDialog(QDialog):
def __init__(self, parent=None):
super().__init__(parent)
self.le = ZLineEdit('')
autoList = ['one', 'two', 'three']
self.completer = QCompleter(autoList, self)
self.setup_widgets()
self.create_layout()
self.create_connections()
def setup_widgets(self):
self.completer.setCaseSensitivity(QtCore.Qt.CaseInsensitive)
self.completer.setCompletionMode(QtWidgets.QCompleter.PopupCompletion)
self.completer.setMaxVisibleItems(10)
self.completer.setFilterMode(QtCore.Qt.MatchContains)
self.le.setCompleter(self.completer)
def create_layout(self):
main_layout = QtWidgets.QVBoxLayout(self)
main_layout.addWidget(self.le)
def create_connections(self):
pass
if __name__ == "__main__":
app = QtWidgets.QApplication(sys.argv)
my_dialog = MyDialog()
my_dialog.show()
sys.exit(app.exec_())
测试
在左侧您会看到默认行为。在右侧,弹出窗口向下移动 4px:
有人问过关于覆盖 QCompleter 弹出窗口位置的类似问题,但我仍然找不到有效的解决方案。我只是想将弹出窗口向下移动 5px 左右(我有一些特定的样式要求)
我已经尝试子类化 QListView 并使用 setPopup() 将其用作我的弹出窗口。然后我覆盖 showEvent 并在 Y 中向下移动弹出窗口。我也在 resizeEvent 上执行此操作,因为我相信这是在过滤项目和调整弹出窗口大小时触发的。但是这不起作用.. 然后我使用单次计时器在 1 毫秒后触发移动。这确实有点工作,但它看起来很不一致 - 第一次显示与后续时间或调整大小不同。
以下是我最近的尝试(试图通过计算弹出窗口的数量来破解它..),希望有人能告诉我我做错了什么或更好的解决方案
import sys
import os
from PySide2 import QtCore, QtWidgets, QtGui
class QPopup(QtWidgets.QListView):
def __init__(self, parent=None):
super(QPopup, self).__init__(parent)
self.popups = 0
def offset(self):
y = 3 if self.popups < 2 else 7
print('y: {}'.format(y))
self.move(self.pos().x(), self.pos().y() + y)
self.popups += 1
def showEvent(self, event):
print('show')
# self.offset()
QtCore.QTimer.singleShot(1, self.offset)
def resizeEvent(self, event):
print('resize')
# self.offset()
QtCore.QTimer.singleShot(1, self.offset)
class MyDialog(QtWidgets.QDialog):
def __init__(self, parent=None):
super(MyDialog, self).__init__(parent)
self.create_widgets()
self.create_layout()
self.create_connections()
def create_widgets(self):
self.le = QtWidgets.QLineEdit('')
self.completer = QtWidgets.QCompleter(self)
self.completer.setCaseSensitivity(QtCore.Qt.CaseInsensitive)
self.completer.setCompletionMode(QtWidgets.QCompleter.PopupCompletion)
self.completer.setMaxVisibleItems(10)
self.completer.setFilterMode(QtCore.Qt.MatchContains)
self.completer.setPopup(QPopup())
popup = QPopup(self)
self.completer.setPopup(popup)
self.model = QtCore.QStringListModel()
self.completer.setModel(self.model)
self.le.setCompleter(self.completer)
self.completer.model().setStringList(['one','two','three'])
def create_layout(self):
main_layout = QtWidgets.QVBoxLayout(self)
main_layout.addWidget(self.le)
def create_connections(self):
pass
if __name__ == "__main__":
app = QtWidgets.QApplication(sys.argv)
my_dialog = MyDialog()
my_dialog.show() # Show the UI
sys.exit(app.exec_())
一个解决方案可能是创建 QLineEdit 的子类并覆盖 keyPressEvent 以显示带有偏移量的弹出窗口:
PySide2.QtWidgets.QCompleter.complete([rect=QRect()])
For PopupCompletion and QCompletion::UnfilteredPopupCompletion modes, calling this function displays the popup displaying the current completions. By default, if rect is not specified, the popup is displayed on the bottom of the widget() . If rect is specified the popup is displayed on the left edge of the rectangle.
参见 doc.qt.io -> QCompleter.complete。
完成,self-contained示例
rect是根据光标rect的y-position计算出来的。弹出窗口的高度 window 没有改变。宽度调整为 ZLineEdit 小部件的宽度。
rect = QtCore.QRect(0,
self.cursorRect().y() + 4,
self.width(),
self.completer().widget().height())
您的代码,使用上述几点稍作修改,可能如下所示:
import sys
from PySide2 import QtCore, QtWidgets
from PySide2.QtWidgets import QLineEdit, QDialog, QCompleter
class ZLineEdit(QLineEdit):
def __init__(self, string, parent=None):
super().__init__(string, parent)
def keyPressEvent(self, event):
super().keyPressEvent(event)
if len(self.text()) > 0:
rect = QtCore.QRect(0,
self.cursorRect().y() + 4,
self.width(),
self.completer().widget().height())
self.completer().complete(rect)
class MyDialog(QDialog):
def __init__(self, parent=None):
super().__init__(parent)
self.le = ZLineEdit('')
autoList = ['one', 'two', 'three']
self.completer = QCompleter(autoList, self)
self.setup_widgets()
self.create_layout()
self.create_connections()
def setup_widgets(self):
self.completer.setCaseSensitivity(QtCore.Qt.CaseInsensitive)
self.completer.setCompletionMode(QtWidgets.QCompleter.PopupCompletion)
self.completer.setMaxVisibleItems(10)
self.completer.setFilterMode(QtCore.Qt.MatchContains)
self.le.setCompleter(self.completer)
def create_layout(self):
main_layout = QtWidgets.QVBoxLayout(self)
main_layout.addWidget(self.le)
def create_connections(self):
pass
if __name__ == "__main__":
app = QtWidgets.QApplication(sys.argv)
my_dialog = MyDialog()
my_dialog.show()
sys.exit(app.exec_())
测试
在左侧您会看到默认行为。在右侧,弹出窗口向下移动 4px: