import sys
from PyQt5.QtWidgets import QApplication, QLabel, QWidget
from PyQt5.QtGui import QDrag, QPixmap, QImage, QPainter, QCursor
from PyQt5.QtCore import QMimeData, Qt
class DraggableLabel(QLabel):
def __init__(self, parent, image):
super(QLabel, self).__init__(parent)
self.setPixmap(QPixmap(image).scaledToWidth(64))
self.show()
def mousePressEvent(self, event):
if event.button() == Qt.LeftButton:
self.drag_start_position = event.pos()
def mouseMoveEvent(self, event):
if not (event.buttons() & Qt.LeftButton):
return
if (event.pos() - self.drag_start_position).manhattanLength() < QApplication.startDragDistance():
return
drag = QDrag(self)
mimedata = QMimeData()
mimedata.setText(self.text())
mimedata.setImageData(self.pixmap().toImage())
drag.setMimeData(mimedata)
pixmap = QPixmap(self.size())
painter = QPainter(pixmap)
painter.drawPixmap(self.rect(), self.grab())
painter.end()
drag.setPixmap(pixmap)
drag.setHotSpot(event.pos())
drag.exec_(Qt.CopyAction | Qt.MoveAction)
class DropLabel(QLabel):
def __init__(self, *args, **kwargs):
QLabel.__init__(self, *args, **kwargs)
self.setAcceptDrops(True)
def dragEnterEvent(self, event):
if event.mimeData().hasImage():
print('event accepted')
event.accept()
else:
print('event rejected')
event.ignore()
def dropEvent(self, event):
if event.mimeData().hasImage():
self.setPixmap(QPixmap.fromImage(QImage(event.mimeData().imageData())))
class Widget(QWidget):
def __init__(self):
super().__init__()
self.initUI()
def initUI(self):
label = DropLabel('drop there', self)
label.setGeometry(190, 65, 100, 100)
label_to_drag = DraggableLabel(self, 'image.png')
self.show()
if __name__ == '__main__':
app = QApplication(sys.argv)
w = Widget()
w.show()
sys.exit(app.exec_())
