在 expanding/collapsing 附近调整 QWidget 的大小
Rezising QWidget afer expanding/collapsing it
我正在尝试根据它是否 expanded/collapsed 自动调整 QWidget 的大小。我尝试了几种发布方式 here and here.
我没有设法采用这些，因此它按我想要的方式工作：我希望 QWidget 在展开时调整自身大小（现在可以工作）但在折叠它（取消选中 QCheckBox）后它的大小保持不变太大，不会变回原来的状态。
这是我的代码：
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
import sys
class CheckableComboBox(QComboBox):
def __init__(self, parent = None):
super(CheckableComboBox, self).__init__(parent)
self.view().pressed.connect(self.handleItemPressed)
self.setModel(QStandardItemModel(self))
self.setStyleSheet("QComboBox{"
"font-size:11px;"
"color:black;"
"background-color:white;"
"border:1px solid black;"
"padding:1px;""}")
self.setEditable(True)
self.lineEdit().setAlignment(Qt.AlignCenter)
self.lineEdit().setReadOnly(True)
self.setMinimumSize(150, 40)
def handleItemPressed(self, index):
item = self.model().itemFromIndex(index)
if item.text() != ' ' and item.checkState() == Qt.Checked:
item.setCheckState(Qt.Unchecked)
if item.text() != ' ' and item.checkState() != Qt.Checked:
item.setCheckState(Qt.Checked)
class Example(QWidget):
def __init__(self):
super().__init__()
## self.setFixedSize(350, 280)
self.init_UI()
def init_UI(self):
self.years = [' ', '2017', '2018', '2019', '2020']
self.months = [' ', '1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '11', '12']
self.metrics = [' ', 'Seller', 'Section', 'Store']
self.units = [' ', 'Number of Pieces Sold', 'Total Value']
self.setWindowTitle('Dialog')
self.sMetric = QLabel('Select metric(s):')
self.sUnit = QLabel('Select unit(s):')
self.okButton = QPushButton('Ok')
self.cancelButton = QPushButton('Cancel')
self.okButton.clicked.connect(self.okClicked)
self.cancelButton.clicked.connect(self.cancelClicked)
for i in (self.sMetric, self.sUnit, self.okButton, self.cancelButton):
i.setFixedHeight(40)
i.setFixedWidth(150)
self.timeWise = QCheckBox('Time-wise View')
self.timeWise.stateChanged.connect(self.on_checked)
self.metricCombo = CheckableComboBox()
for index, element in enumerate(self.metrics):
self.metricCombo.addItem(element)
if index > 0:
item = self.metricCombo.model().item(index, 0)
item.setCheckState(Qt.Unchecked)
self.unitCombo = CheckableComboBox()
for index, element in enumerate(self.units):
self.unitCombo.addItem(element)
if index > 0:
item = self.unitCombo.model().item(index, 0)
item.setCheckState(Qt.Unchecked)
self.grid = QGridLayout()
self.grid.setSpacing(10)
self.grid.addWidget(self.sMetric, 1, 0)
self.grid.addWidget(self.metricCombo, 1, 1)
self.grid.addWidget(self.sUnit, 2, 0)
self.grid.addWidget(self.unitCombo, 2, 1)
self.grid.addWidget(self.timeWise, 3, 0)
self.grid.addWidget(self.okButton, 6, 0)
self.grid.addWidget(self.cancelButton, 6, 1)
self.setLayout(self.grid)
def on_checked(self, state):
if state == Qt.Checked:
print('Checked')
self.sYear = QLabel('Select year(s):')
self.sMonth = QLabel('Select month(s):')
for i in (self.sYear, self.sMonth):
i.setFixedHeight(40)
i.setFixedWidth(150)
self.monthCombo = CheckableComboBox()
for index, element in enumerate(self.months):
self.monthCombo.addItem(element)
if index > 0:
item = self.monthCombo.model().item(index, 0)
item.setCheckState(Qt.Unchecked)
self.yearCombo = CheckableComboBox()
for index, element in enumerate(self.years):
self.yearCombo.addItem(element)
if index > 0:
item = self.yearCombo.model().item(index, 0)
item.setCheckState(Qt.Unchecked)
self.grid.addWidget(self.sYear, 4, 0)
self.grid.addWidget(self.yearCombo, 4, 1)
self.grid.addWidget(self.sMonth, 5, 0)
self.grid.addWidget(self.monthCombo, 5, 1)
else:
print('Unchecked')
self.sYear.deleteLater()
self.sMonth.deleteLater()
self.monthCombo.deleteLater()
self.yearCombo.deleteLater()
def okClicked(self):
self.close()
def cancelClicked(self):
self.close()
if __name__ == '__main__':
app = QApplication(sys.argv)
main = Example()
main.show()
sys.exit(app.exec_())
对如何进行有什么建议吗？
您必须设置包含 QLayout::SetFixedSize 中所有小部件的设计的大小限制：
QLayout::SetFixedSize 3 The main widget's size is set to sizeHint(); it cannot be resized at all.
除此之外，对代码的改进不会创建然后删除小部件，但最好隐藏它们或根据需要使其可见。
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
import sys
class CheckableComboBox(QComboBox):
def __init__(self, parent = None):
super(CheckableComboBox, self).__init__(parent)
self.view().pressed.connect(self.handleItemPressed)
self.setModel(QStandardItemModel(self))
self.setStyleSheet("QComboBox{"
"font-size:11px;"
"color:black;"
"background-color:white;"
"border:1px solid black;"
"padding:1px;""}")
self.setEditable(True)
self.lineEdit().setAlignment(Qt.AlignCenter)
self.lineEdit().setReadOnly(True)
self.setMinimumSize(150, 40)
def handleItemPressed(self, index):
item = self.model().itemFromIndex(index)
if item.text() != ' ' and item.checkState() == Qt.Checked:
item.setCheckState(Qt.Unchecked)
if item.text() != ' ' and item.checkState() != Qt.Checked:
item.setCheckState(Qt.Checked)
class Example(QWidget):
def __init__(self):
super().__init__()
## self.setFixedSize(350, 280)
self.init_UI()
def init_UI(self):
self.years = [' ', '2017', '2018', '2019', '2020']
self.months = [' ', '1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '11', '12']
self.metrics = [' ', 'Seller', 'Section', 'Store']
self.units = [' ', 'Number of Pieces Sold', 'Total Value']
self.setWindowTitle('Dialog')
self.sMetric = QLabel('Select metric(s):')
self.sUnit = QLabel('Select unit(s):')
self.okButton = QPushButton('Ok')
self.cancelButton = QPushButton('Cancel')
self.okButton.clicked.connect(self.okClicked)
self.cancelButton.clicked.connect(self.cancelClicked)
for i in (self.sMetric, self.sUnit, self.okButton, self.cancelButton):
i.setFixedHeight(40)
i.setFixedWidth(150)
self.timeWise = QCheckBox('Time-wise View')
self.timeWise.toggled.connect(self.on_checked)
self.metricCombo = CheckableComboBox()
for index, element in enumerate(self.metrics):
self.metricCombo.addItem(element)
if index > 0:
item = self.metricCombo.model().item(index, 0)
item.setCheckState(Qt.Unchecked)
self.unitCombo = CheckableComboBox()
for index, element in enumerate(self.units):
self.unitCombo.addItem(element)
if index > 0:
item = self.unitCombo.model().item(index, 0)
item.setCheckState(Qt.Unchecked)
self.grid = QGridLayout()
self.grid.setSpacing(10)
self.grid.addWidget(self.sMetric, 1, 0)
self.grid.addWidget(self.metricCombo, 1, 1)
self.grid.addWidget(self.sUnit, 2, 0)
self.grid.addWidget(self.unitCombo, 2, 1)
self.grid.addWidget(self.timeWise, 3, 0)
self.grid.addWidget(self.okButton, 6, 0)
self.grid.addWidget(self.cancelButton, 6, 1)
self.setLayout(self.grid)
self.sYear = QLabel('Select year(s):')
self.sMonth = QLabel('Select month(s):')
for i in (self.sYear, self.sMonth):
i.setFixedHeight(40)
i.setFixedWidth(150)
self.monthCombo = CheckableComboBox()
for index, element in enumerate(self.months):
self.monthCombo.addItem(element)
if index > 0:
item = self.monthCombo.model().item(index, 0)
item.setCheckState(Qt.Unchecked)
self.yearCombo = CheckableComboBox()
for index, element in enumerate(self.years):
self.yearCombo.addItem(element)
if index > 0:
item = self.yearCombo.model().item(index, 0)
item.setCheckState(Qt.Unchecked)
self.grid.addWidget(self.sYear, 4, 0)
self.grid.addWidget(self.yearCombo, 4, 1)
self.grid.addWidget(self.sMonth, 5, 0)
self.grid.addWidget(self.monthCombo, 5, 1)
self.grid.setSizeConstraint(QLayout.SetFixedSize)
self.on_checked(False)
def on_checked(self, checked):
self.sYear.setVisible(checked)
self.sMonth.setVisible(checked)
self.monthCombo.setVisible(checked)
self.yearCombo.setVisible(checked)
def okClicked(self):
self.close()
def cancelClicked(self):
self.close()
if __name__ == '__main__':
app = QApplication(sys.argv)
main = Example()
main.show()
sys.exit(app.exec_())
我正在尝试根据它是否 expanded/collapsed 自动调整 QWidget 的大小。我尝试了几种发布方式 here and here.
我没有设法采用这些，因此它按我想要的方式工作：我希望 QWidget 在展开时调整自身大小（现在可以工作）但在折叠它（取消选中 QCheckBox）后它的大小保持不变太大，不会变回原来的状态。
这是我的代码：
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
import sys
class CheckableComboBox(QComboBox):
def __init__(self, parent = None):
super(CheckableComboBox, self).__init__(parent)
self.view().pressed.connect(self.handleItemPressed)
self.setModel(QStandardItemModel(self))
self.setStyleSheet("QComboBox{"
"font-size:11px;"
"color:black;"
"background-color:white;"
"border:1px solid black;"
"padding:1px;""}")
self.setEditable(True)
self.lineEdit().setAlignment(Qt.AlignCenter)
self.lineEdit().setReadOnly(True)
self.setMinimumSize(150, 40)
def handleItemPressed(self, index):
item = self.model().itemFromIndex(index)
if item.text() != ' ' and item.checkState() == Qt.Checked:
item.setCheckState(Qt.Unchecked)
if item.text() != ' ' and item.checkState() != Qt.Checked:
item.setCheckState(Qt.Checked)
class Example(QWidget):
def __init__(self):
super().__init__()
## self.setFixedSize(350, 280)
self.init_UI()
def init_UI(self):
self.years = [' ', '2017', '2018', '2019', '2020']
self.months = [' ', '1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '11', '12']
self.metrics = [' ', 'Seller', 'Section', 'Store']
self.units = [' ', 'Number of Pieces Sold', 'Total Value']
self.setWindowTitle('Dialog')
self.sMetric = QLabel('Select metric(s):')
self.sUnit = QLabel('Select unit(s):')
self.okButton = QPushButton('Ok')
self.cancelButton = QPushButton('Cancel')
self.okButton.clicked.connect(self.okClicked)
self.cancelButton.clicked.connect(self.cancelClicked)
for i in (self.sMetric, self.sUnit, self.okButton, self.cancelButton):
i.setFixedHeight(40)
i.setFixedWidth(150)
self.timeWise = QCheckBox('Time-wise View')
self.timeWise.stateChanged.connect(self.on_checked)
self.metricCombo = CheckableComboBox()
for index, element in enumerate(self.metrics):
self.metricCombo.addItem(element)
if index > 0:
item = self.metricCombo.model().item(index, 0)
item.setCheckState(Qt.Unchecked)
self.unitCombo = CheckableComboBox()
for index, element in enumerate(self.units):
self.unitCombo.addItem(element)
if index > 0:
item = self.unitCombo.model().item(index, 0)
item.setCheckState(Qt.Unchecked)
self.grid = QGridLayout()
self.grid.setSpacing(10)
self.grid.addWidget(self.sMetric, 1, 0)
self.grid.addWidget(self.metricCombo, 1, 1)
self.grid.addWidget(self.sUnit, 2, 0)
self.grid.addWidget(self.unitCombo, 2, 1)
self.grid.addWidget(self.timeWise, 3, 0)
self.grid.addWidget(self.okButton, 6, 0)
self.grid.addWidget(self.cancelButton, 6, 1)
self.setLayout(self.grid)
def on_checked(self, state):
if state == Qt.Checked:
print('Checked')
self.sYear = QLabel('Select year(s):')
self.sMonth = QLabel('Select month(s):')
for i in (self.sYear, self.sMonth):
i.setFixedHeight(40)
i.setFixedWidth(150)
self.monthCombo = CheckableComboBox()
for index, element in enumerate(self.months):
self.monthCombo.addItem(element)
if index > 0:
item = self.monthCombo.model().item(index, 0)
item.setCheckState(Qt.Unchecked)
self.yearCombo = CheckableComboBox()
for index, element in enumerate(self.years):
self.yearCombo.addItem(element)
if index > 0:
item = self.yearCombo.model().item(index, 0)
item.setCheckState(Qt.Unchecked)
self.grid.addWidget(self.sYear, 4, 0)
self.grid.addWidget(self.yearCombo, 4, 1)
self.grid.addWidget(self.sMonth, 5, 0)
self.grid.addWidget(self.monthCombo, 5, 1)
else:
print('Unchecked')
self.sYear.deleteLater()
self.sMonth.deleteLater()
self.monthCombo.deleteLater()
self.yearCombo.deleteLater()
def okClicked(self):
self.close()
def cancelClicked(self):
self.close()
if __name__ == '__main__':
app = QApplication(sys.argv)
main = Example()
main.show()
sys.exit(app.exec_())
对如何进行有什么建议吗？
您必须设置包含 QLayout::SetFixedSize 中所有小部件的设计的大小限制：
QLayout::SetFixedSize3 The main widget's size is set to sizeHint(); it cannot be resized at all.
除此之外，对代码的改进不会创建然后删除小部件，但最好隐藏它们或根据需要使其可见。
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
import sys
class CheckableComboBox(QComboBox):
def __init__(self, parent = None):
super(CheckableComboBox, self).__init__(parent)
self.view().pressed.connect(self.handleItemPressed)
self.setModel(QStandardItemModel(self))
self.setStyleSheet("QComboBox{"
"font-size:11px;"
"color:black;"
"background-color:white;"
"border:1px solid black;"
"padding:1px;""}")
self.setEditable(True)
self.lineEdit().setAlignment(Qt.AlignCenter)
self.lineEdit().setReadOnly(True)
self.setMinimumSize(150, 40)
def handleItemPressed(self, index):
item = self.model().itemFromIndex(index)
if item.text() != ' ' and item.checkState() == Qt.Checked:
item.setCheckState(Qt.Unchecked)
if item.text() != ' ' and item.checkState() != Qt.Checked:
item.setCheckState(Qt.Checked)
class Example(QWidget):
def __init__(self):
super().__init__()
## self.setFixedSize(350, 280)
self.init_UI()
def init_UI(self):
self.years = [' ', '2017', '2018', '2019', '2020']
self.months = [' ', '1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '11', '12']
self.metrics = [' ', 'Seller', 'Section', 'Store']
self.units = [' ', 'Number of Pieces Sold', 'Total Value']
self.setWindowTitle('Dialog')
self.sMetric = QLabel('Select metric(s):')
self.sUnit = QLabel('Select unit(s):')
self.okButton = QPushButton('Ok')
self.cancelButton = QPushButton('Cancel')
self.okButton.clicked.connect(self.okClicked)
self.cancelButton.clicked.connect(self.cancelClicked)
for i in (self.sMetric, self.sUnit, self.okButton, self.cancelButton):
i.setFixedHeight(40)
i.setFixedWidth(150)
self.timeWise = QCheckBox('Time-wise View')
self.timeWise.toggled.connect(self.on_checked)
self.metricCombo = CheckableComboBox()
for index, element in enumerate(self.metrics):
self.metricCombo.addItem(element)
if index > 0:
item = self.metricCombo.model().item(index, 0)
item.setCheckState(Qt.Unchecked)
self.unitCombo = CheckableComboBox()
for index, element in enumerate(self.units):
self.unitCombo.addItem(element)
if index > 0:
item = self.unitCombo.model().item(index, 0)
item.setCheckState(Qt.Unchecked)
self.grid = QGridLayout()
self.grid.setSpacing(10)
self.grid.addWidget(self.sMetric, 1, 0)
self.grid.addWidget(self.metricCombo, 1, 1)
self.grid.addWidget(self.sUnit, 2, 0)
self.grid.addWidget(self.unitCombo, 2, 1)
self.grid.addWidget(self.timeWise, 3, 0)
self.grid.addWidget(self.okButton, 6, 0)
self.grid.addWidget(self.cancelButton, 6, 1)
self.setLayout(self.grid)
self.sYear = QLabel('Select year(s):')
self.sMonth = QLabel('Select month(s):')
for i in (self.sYear, self.sMonth):
i.setFixedHeight(40)
i.setFixedWidth(150)
self.monthCombo = CheckableComboBox()
for index, element in enumerate(self.months):
self.monthCombo.addItem(element)
if index > 0:
item = self.monthCombo.model().item(index, 0)
item.setCheckState(Qt.Unchecked)
self.yearCombo = CheckableComboBox()
for index, element in enumerate(self.years):
self.yearCombo.addItem(element)
if index > 0:
item = self.yearCombo.model().item(index, 0)
item.setCheckState(Qt.Unchecked)
self.grid.addWidget(self.sYear, 4, 0)
self.grid.addWidget(self.yearCombo, 4, 1)
self.grid.addWidget(self.sMonth, 5, 0)
self.grid.addWidget(self.monthCombo, 5, 1)
self.grid.setSizeConstraint(QLayout.SetFixedSize)
self.on_checked(False)
def on_checked(self, checked):
self.sYear.setVisible(checked)
self.sMonth.setVisible(checked)
self.monthCombo.setVisible(checked)
self.yearCombo.setVisible(checked)
def okClicked(self):
self.close()
def cancelClicked(self):
self.close()
if __name__ == '__main__':
app = QApplication(sys.argv)
main = Example()
main.show()
sys.exit(app.exec_())