Drop on QMdiArea

Knacktus

Hi guys,

I've subclassed a QMdiArea to accept drops. Further I've subclassed a QMdiSubWindow to setAcceptDrops to false. Despite that the subwindows accept the drops (propagate the drops to the QMdiArea) which is not desired. Here's the code (in Python):

@
from PyQt4.QtGui import *
from PyQt4.QtCore import *

class MDIArea(QMdiArea):

def __init__(self, parent=None):
    super(MDIArea, self).__init__(parent)
    self.setAcceptDrops(True)

def add_sub_window(self, text):
    sub_window = MDISubWindow(text)
    self.addSubWindow(sub_window)
    sub_window.show()

def dropEvent(self, drop_event):
    mime_data = drop_event.mimeData()
    text = unicode(mime_data.text())
    self.add_sub_window(text)

def dragEnterEvent(self, event):
    event.acceptProposedAction()

class MDISubWindow(QMdiSubWindow):

def __init__(self, text, parent=None):
    super(MDISubWindow, self).__init__(parent)
    self.label = QLabel(text)
    self.setWidget(self.label)
    self.setAcceptDrops(False)

class TestLabel(QLabel):

def __init__(self, parent=None):
    super(TestLabel, self).__init__(parent)
    self.setText("Jan")

def mousePressEvent(self, mouse_event):
    if mouse_event.button() == Qt.LeftButton:
        self.dragStartPosition = mouse_event.pos()
    else:
        self.mousePressEvent(mouse_event)

def mouseMoveEvent(self, mouse_event):
    if mouse_event.buttons() == Qt.LeftButton:
        if (mouse_event.pos() - self.dragStartPosition).manhattanLength() < QApplication.startDragDistance():
            return
        drag = QDrag(self)
        mime_data = QMimeData()
        mime_data.setText(self.text())
        drag.setMimeData(mime_data)
        drop_action = drag.exec_(Qt.MoveAction)
    else:
        self.mousePressEvent(mouse_event)

if name == "main":
import sys

app = QApplication(sys.argv)

mdi_area = MDIArea()
mdi_area.show()

test_label = TestLabel()
test_label.show()

app.exec_()

@

Somehow I managed to get it done in prior versions but can't recall how ... (and didn't commit to vcs ... stupid me).

Any help is highly appreciated,

Jan