Python 在QFrame内移动(拖动)QLabel
我需要能够在屏幕上的背景图像上显示控件。我已经完成了这个任务,并且已经创建并显示了一个控件(一个显示图像的QLabel)。现在,我需要能够通过将标签拖动到我希望移动的位置来移动标签,我已经学习了一些关于在pyqt中拖动的教程,但是我没有完成这项任务 这是我的密码。请注意,控件可以移动,但当您移动它时,背景也会移动,当您放下它时,它会保持在原来的位置。我只想移动控件(显示图像的QLabel)并将其拖动到选项卡内:Python 在QFrame内移动(拖动)QLabel,python,qt,drag-and-drop,pyqt,pyside,Python,Qt,Drag And Drop,Pyqt,Pyside,我需要能够在屏幕上的背景图像上显示控件。我已经完成了这个任务,并且已经创建并显示了一个控件(一个显示图像的QLabel)。现在,我需要能够通过将标签拖动到我希望移动的位置来移动标签,我已经学习了一些关于在pyqt中拖动的教程,但是我没有完成这项任务 这是我的密码。请注意,控件可以移动,但当您移动它时,背景也会移动,当您放下它时,它会保持在原来的位置。我只想移动控件(显示图像的QLabel)并将其拖动到选项卡内: import sys from PyQt4.QtCore import * from
import sys
from PyQt4.QtCore import *
from PyQt4.QtGui import *
class CentralWidget(QFrame):
def __init__(self, *args):
super(CentralWidget, self).__init__(*args)
self.setStyleSheet("background-image: url(logo.png);")
self.setAcceptDrops(True)
def dragEnterEvent(self, e):
e.accept()
def dropEvent(self, e):
# get the relative position from the mime data
mime = e.mimeData().text()
x, y = map(int, mime.split(','))
# move
# so move the dragged button (i.e. event.source())
e.source().move(e.pos()-QPoint(x, y))
# set the drop action as Move
e.setDropAction(Qt.MoveAction)
# tell the QDrag we accepted it
e.accept()
class Selector(QLabel):
def mouseMoveEvent(self, e):
if e.buttons() != Qt.LeftButton:
return
# write the relative cursor position to mime data
mimeData = QMimeData()
# simple string with 'x,y'
mimeData.setText('%d,%d' % (e.x(), e.y()))
# let's make it fancy. we'll show a "ghost" of the button as we drag
# grab the button to a pixmap
pixmap = QPixmap.grabWidget(self)
# below makes the pixmap half transparent
painter = QPainter(pixmap)
painter.setCompositionMode(painter.CompositionMode_DestinationIn)
painter.fillRect(pixmap.rect(), QColor(0, 0, 0, 127))
painter.end()
# make a QDrag
drag = QDrag(self)
# put our MimeData
drag.setMimeData(mimeData)
# set its Pixmap
drag.setPixmap(pixmap)
# shift the Pixmap so that it coincides with the cursor position
drag.setHotSpot(e.pos())
# start the drag operation
# exec_ will return the accepted action from dropEvent
if drag.exec_(Qt.MoveAction) == Qt.MoveAction:
print 'moved'
# else:
# print 'copied'
def mousePressEvent(self, e):
QLabel.mousePressEvent(self,e)
if e.button() == Qt.LeftButton:
print 'press'
class fPrincipal(QMainWindow):
def __init__(self, parent=None):
# Call base class constructor
QMainWindow.__init__(self, parent)
self.setGeometry(QRect(0, 0, 599+10, 399+10))
self.move(QDesktopWidget().availableGeometry().center() - self.frameGeometry().center())
# Creamos el contenedor central, que sera organizado por pestañas
centralWidget = QTabWidget()
self.setCentralWidget(centralWidget);
# Creamos la 1ra pestaña
tab = CentralWidget()
tabLayout = QHBoxLayout()
tab.setLayout(tabLayout)
# Añadimos la pestaña al contenedor central
centralWidget.addTab(tab,"Escena 1")
logDockWidget = QDockWidget("Tools", self)
logDockWidget.setObjectName("LogDockWidget")
logDockWidget.setAllowedAreas(Qt.LeftDockWidgetArea | Qt.RightDockWidgetArea)
self.addDockWidget(Qt.RightDockWidgetArea, logDockWidget)
def crearMenu():
mimenu = self.menuBar().addMenu("&Archivo")
crearMenu()
selectorLb = Selector()
picture = QPixmap('D:\Adrian\Tesis\Codigo\selector.png')
selectorLb.setPixmap(picture)
tabLayout.addWidget(selectorLb)
if __name__ == "__main__":
app = QApplication(sys.argv)
w = fPrincipal()
w.show()
sys.exit(app.exec_())
签出,这里是一个简化版本:
#!/usr/bin/env python
#-*- coding:utf-8 -*-
import sip
sip.setapi('QString', 2)
from PyQt4 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())
mimeData = QtCore.QMimeData()
mimeData.setData(myMimeType, itemData)
mimeData.setText(self.text())
drag = QtGui.QDrag(self)
drag.setMimeData(mimeData)
drag.setHotSpot(event.pos() - self.rect().topLeft())
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_())
#/usr/bin/env python
#-*-编码:utf-8-*-
进口sip
sip.setapi('QString',2)
从PyQt4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_())