Python PySide如何在拖放时保持QLabel可见?
我想拖放标签,我的代码就是这样做的,但是当移动标签时,标签消失了。如何在拖动标签时使其可见?我正在使用QDrag复制内容 我想能够把这些标签拖到一个有很多插槽的盒子里,当标签掉在附近时,把标签锁在一个插槽里。由于标签在拖动时变得不可见,因此很难想象当我松开鼠标按钮时,标签将被放置在何处Python PySide如何在拖放时保持QLabel可见?,python,qt,pyqt,drag-and-drop,pyside,Python,Qt,Pyqt,Drag And Drop,Pyside,我想拖放标签,我的代码就是这样做的,但是当移动标签时,标签消失了。如何在拖动标签时使其可见?我正在使用QDrag复制内容 我想能够把这些标签拖到一个有很多插槽的盒子里,当标签掉在附近时,把标签锁在一个插槽里。由于标签在拖动时变得不可见,因此很难想象当我松开鼠标按钮时,标签将被放置在何处 from PySide import QtCore, QtGui myMimeType = 'application/MyWindow' class MyLabel(QtGui.QLabel): de
from PySide import QtCore, QtGui
myMimeType = 'application/MyWindow'
class MyLabel(QtGui.QLabel):
def __init__(self, parent):
super(MyLabel, self).__init__(parent)
self.setStyleSheet("""
background-color: black;
color: white;
font: bold;
padding: 6px;
border-width: 2px;
border-style: solid;
border-radius: 16px;
border-color: white;
""")
def mousePressEvent(self, event):
itemData = QtCore.QByteArray()
dataStream = QtCore.QDataStream(itemData, QtCore.QIODevice.WriteOnly)
dataStream.writeString(self.text())
dataStream << QtCore.QPoint(event.pos() - self.rect().topLeft())
print dataStream
mimeData = QtCore.QMimeData()
mimeData.setData(myMimeType, itemData)
mimeData.setText(self.text())
drag = QtGui.QDrag(self)
drag.setMimeData(mimeData)
drag.setHotSpot(event.pos() - self.rect().topRight())
self.hide()
if drag.exec_(QtCore.Qt.MoveAction | QtCore.Qt.CopyAction, QtCore.Qt.CopyAction) == QtCore.Qt.MoveAction:
self.close()
else:
self.show()
class MyFrame(QtGui.QFrame):
def __init__(self, parent=None):
super(MyFrame, self).__init__(parent)
self.setStyleSheet("""
background-color: lightgray;
border-width: 2px;
border-style: solid;
border-color: black;
margin: 2px;
""")
y = 6
for labelNumber in range(6):
label = MyLabel(self)
label.setText("Label #{0}".format(labelNumber))
label.move(6, y)
label.show()
y += label.height() + 2
self.setAcceptDrops(True)
def dragEnterEvent(self, event):
if event.mimeData().hasFormat(myMimeType):
if event.source() in self.children():
event.setDropAction(QtCore.Qt.MoveAction)
event.accept()
else:
event.acceptProposedAction()
else:
event.ignore()
def dropEvent(self, event):
if event.mimeData().hasFormat(myMimeType):
mime = event.mimeData()
itemData = mime.data(myMimeType)
dataStream = QtCore.QDataStream(itemData, QtCore.QIODevice.ReadOnly)
text = QtCore.QByteArray()
offset = QtCore.QPoint()
dataStream >> text >> offset
newLabel = MyLabel(self)
newLabel.setText(event.mimeData().text())
newLabel.move(event.pos() - offset)
newLabel.show()
if event.source() in self.children():
event.setDropAction(QtCore.Qt.MoveAction)
event.accept()
else:
event.acceptProposedAction()
else:
event.ignore()
class MyWindow(QtGui.QMainWindow):
def __init__(self, parent=None):
super(MyWindow, self).__init__(parent)
self.myFrame = MyFrame(self)
self.setCentralWidget(self.myFrame)
if __name__ == "__main__":
import sys
app = QtGui.QApplication(sys.argv)
app.setApplicationName('MyWindow')
main = MyWindow()
main.resize(333, 333)
main.move(app.desktop().screen().rect().center() - main.rect().center())
main.show()
sys.exit(app.exec_())
从PySide导入QtCore、QtGui
myMimeType='应用程序/MyWindow'
MyLabel类(QtGui.QLabel):
定义初始化(自身,父级):
超级(MyLabel,self)。\uuuuu初始化\uuuuuu(父级)
self.setStyleSheet(“”)
背景色:黑色;
颜色:白色;
字体:粗体;
填充:6px;
边框宽度:2倍;
边框样式:实心;
边界半径:16px;
边框颜色:白色;
""")
def鼠标压力事件(自身、事件):
itemData=QtCore.QByteArray()
dataStream=QtCore.QDataStream(itemData,QtCore.QIODevice.WriteOnly)
dataStream.writeString(self.text())
数据流>文本>>偏移量
newLabel=MyLabel(自)
newLabel.setText(event.mimeData().text())
newLabel.move(event.pos()-offset)
newLabel.show()
如果self.children()中的event.source()为:
event.setDropAction(QtCore.Qt.MoveAction)
event.accept()
其他:
event.acceptProposeAction()
其他:
event.ignore()
类MyWindow(QtGui.QMainWindow):
def uuu init uuu(self,parent=None):
超级(MyWindow,self)。\uuuuu init\uuuuuu(父级)
self.myFrame=myFrame(self)
self.setCentralWidget(self.myFrame)
如果名称=“\uuuuu main\uuuuuuuu”:
导入系统
app=QtGui.QApplication(sys.argv)
app.setApplicationName('MyWindow')
main=MyWindow()
main.resize(333333)
main.move(app.desktop().screen().rect().center()-main.rect().center())
main.show()
sys.exit(app.exec_())
您必须保存小部件并在QDrag中进行设置:
从PySide导入QtCore、QtGui
myMimeType=“应用程序/MyWindow”
MyLabel类(QtGui.QLabel):
定义初始化(自身,父级):
超级(MyLabel,self)。\uuuuu初始化\uuuuuu(父级)
自选表格(
"""
背景色:黑色;
颜色:白色;
字体:粗体;
填充:6px;
边框宽度:2倍;
边框样式:实心;
边界半径:16px;
边框颜色:白色;
"""
)
def鼠标压力事件(自身、事件):
itemData=QtCore.QByteArray()
dataStream=QtCore.QDataStream(itemData,QtCore.QIODevice.WriteOnly)
dataStream.writeString(self.text())
数据流>文本>>偏移量
newLabel=MyLabel(自)
newLabel.setText(event.mimeData().text())
newLabel.move(event.pos()-offset)
newLabel.show()
event.setDropAction(QtCore.Qt.MoveAction)
其他:
event.ignore()
类MyWindow(QtGui.QMainWindow):
def uuu init uuu(self,parent=None):
超级(MyWindow,self)。\uuuuu init\uuuuuu(父级)
self.myFrame=myFrame()
self.setCentralWidget(self.myFrame)
如果名称=“\uuuuu main\uuuuuuuu”:
导入系统
app=QtGui.QApplication(sys.argv)
app.setApplicationName(“MyWindow”)
main=MyWindow()
main.resize(333333)
main.show()
sys.exit(app.exec_())
在Win7x64上使用Pyside和Python 2.7.15,我得到了一个AttributeError:“MyLabel”对象没有属性“grab”
@noEmbryo我已经用PySide2对它进行了测试,但我发现grab是在Qt5中引入的。我刚刚用Qt4兼容代码替换了它,因此PySide兼容,请再试一次。谢谢,它可以工作!你能看看这个问题吗?这个项目的下一步是什么?