我正在写一个小程序,理想情况下,我希望有一个固定大小的组,可以展开,其中我有更多的破坏者,代表我可以打开和关闭的项目,以便向我的系统添加一些实体
我一直在这里寻找类似的问题,并得出以下结论,以便半正常工作:
我添加了-
按钮以从组中删除这些孩子,并添加了+
按钮以将孩子添加到组中
只要我不删除或添加小部件,这似乎工作正常
我的代码如下所示:
spoilers.py
import sys
from PyQt5.QtWidgets import *
from PyQt5.QtWidgets import QPushButton
from PyQt5.QtGui import *
from PyQt5.QtCore import *
class Spoiler(QWidget):
def __init__(self, parent=None, title='', animationDuration=300, addRemoveOption='None'):
super(Spoiler, self).__init__(parent=parent)
self.animationDuration = animationDuration
self.toggleAnimation = QParallelAnimationGroup()
self.contentArea = QScrollArea()
self.headerLine = QFrame()
self.toggleButton = QToolButton()
self.mainLayout = QGridLayout()
self.childWidgets = []
self.toggleButton.setStyleSheet("QToolButton { border: none; }")
self.toggleButton.setToolButtonStyle(Qt.ToolButtonTextBesideIcon)
self.toggleButton.setArrowType(Qt.RightArrow)
self.toggleButton.setText(str(title))
self.toggleButton.setCheckable(True)
self.toggleButton.setChecked(False)
self.addRemoveOperation = addRemoveOption
if addRemoveOption is not 'None':
if addRemoveOption is 'Add':
self.addRemoveButton = QPushButton('+')
else:
self.addRemoveButton = QPushButton('-')
self.addRemoveButton.clicked.connect(self.onAddRemoveButton)
self.contentArea.setStyleSheet("QScrollArea { background-color: white; border: none; }")
self.contentArea.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Fixed)
# start out collapsed
self.contentArea.setMaximumHeight(0)
self.contentArea.setMinimumHeight(0)
# let the entire widget grow and shrink with its content
self.toggleAnimation.addAnimation(QPropertyAnimation(self, b"minimumHeight"))
self.toggleAnimation.addAnimation(QPropertyAnimation(self, b"maximumHeight"))
self.toggleAnimation.addAnimation(QPropertyAnimation(self.contentArea, b"maximumHeight"))
# don't waste space
self.mainLayout.setVerticalSpacing(0)
self.mainLayout.setContentsMargins(0, 0, 0, 0)
self.mainLayout.addWidget(self.toggleButton, 0, 0, 1, 1, Qt.AlignLeft)
if addRemoveOption is not 'None':
self.mainLayout.addWidget(self.addRemoveButton, 0, 2, 1, 1, Qt.AlignRight)
self.mainLayout.addWidget(self.contentArea, 1, 0, 1, 3)
self.setLayout(self.mainLayout)
def start_animation(checked):
arrow_type = Qt.DownArrow if checked else Qt.RightArrow
direction = QAbstractAnimation.Forward if checked else QAbstractAnimation.Backward
self.toggleButton.setArrowType(arrow_type)
self.toggleAnimation.setDirection(direction)
self.toggleAnimation.start()
self.toggleButton.clicked.connect(start_animation)
self.contentLayout = QVBoxLayout()
self.setContentLayout(self.contentLayout)
def setContentLayout(self, contentLayout):
self.contentArea.destroy()
self.contentArea.setLayout(contentLayout)
collapsedHeight = self.sizeHint().height() - self.contentArea.maximumHeight()
contentHeight = contentLayout.sizeHint().height()
for i in range(self.toggleAnimation.animationCount()-1):
spoilerAnimation = self.toggleAnimation.animationAt(i)
spoilerAnimation.setDuration(self.animationDuration)
spoilerAnimation.setStartValue(collapsedHeight)
spoilerAnimation.setEndValue(collapsedHeight + contentHeight)
contentAnimation = self.toggleAnimation.animationAt(self.toggleAnimation.animationCount() - 1)
contentAnimation.setDuration(self.animationDuration)
contentAnimation.setStartValue(0)
contentAnimation.setEndValue(contentHeight)
def addChild(self, child):
self.childWidgets += [child]
self.contentLayout.addWidget(child)
self.setContentLayout(self.contentLayout)
def removeChild(self, child):
self.childWidgets.remove(child)
#self.contentLayout.removeWidget(child)
child.destroy()
#self.setContentLayout(self.contentLayout)
def onAddRemoveButton(self):
self.addChild(LeafSpoiler(root=self))
class LeafSpoiler(Spoiler):
def __init__(self, parent=None, root=None, title=''):
if(root == None):
addRemoveOption = 'None'
else:
addRemoveOption = 'Sub'
super(LeafSpoiler, self).__init__(parent=parent, title=title, addRemoveOption=addRemoveOption)
self.root = root
def onAddRemoveButton(self):
self.root.removeChild(self)
gui.py
import sys
from PyQt5.QtWidgets import *
from PyQt5.QtWidgets import QPushButton
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from spoilers import *
class MainWindow(QMainWindow):
def __init__(self):
super().__init__()
self.init_ui()
def init_ui(self):
self.setGeometry(300, 300, 300, 220)
# self.setWindowIcon(QIcon('web.png'))
self.centralWidget = QFrame()
self.centralLayout = QVBoxLayout()
self.centralWidget.setLayout(self.centralLayout)
self.spoiler1 = Spoiler(addRemoveOption='Add', title='Group 1')
self.spoiler2 = Spoiler(addRemoveOption='Add', title='Group 2')
for i in range(3):
leaf = LeafSpoiler(root=self.spoiler1)
self.spoiler1.addChild(leaf)
leaf = LeafSpoiler(root=self.spoiler2)
self.spoiler2.addChild(leaf)
self.centralLayout.addWidget(self.spoiler1)
self.centralLayout.addWidget(self.spoiler2)
self.setCentralWidget(self.centralWidget)
self.show()
if __name__ == '__main__':
app = QApplication(sys.argv)
ex = MainWindow()
sys.exit(app.exec_())
我不确定这为什么不起作用。我假设Spoiler.setContentLayout()
不应该被多次调用
如果有人能在这件事上帮助我,我会非常高兴的
您好, 芬兰人
我不太确定我是否正确理解了你的问题。我想你是说pyqt在试图移除扰流板时崩溃?至少这是我的机器上发生的事情
你的“removeChild”方法似乎是罪魁祸首。在不太了解崩溃源的情况下,将其替换为调用deleteLater()可以在我的计算机上删除子项:
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