userale/tests/testdragndrop2.py

# -*- coding: utf-8 -*-

"""
ZetCode PyQt5 tutorial

In this program, we can press on a button with 
a left mouse click or drag and drop the button 
with the right mouse click. 

author: Jan Bodnar
website: zetcode.com
last edited: January 2015
"""

import sys
from PyQt5.QtWidgets import QPushButton, QWidget, QApplication
from PyQt5.QtCore import Qt, QMimeData
from PyQt5.QtGui import QDrag

from userale.ale import Ale

class Button(QPushButton):
  
    def __init__(self, title, parent):
        super().__init__(title, parent)
        

    def mouseMoveEvent(self, e):

        if e.buttons() != Qt.RightButton:
            return

        mimeData = QMimeData()

        drag = QDrag(self)
        drag.setMimeData(mimeData)
        drag.setHotSpot(e.pos() - self.rect().topLeft())

        dropAction = drag.exec_(Qt.MoveAction)


    def mousePressEvent(self, e):
      
        QPushButton.mousePressEvent(self, e)
        
        if e.button() == Qt.LeftButton:
            print('press')


class Example(QWidget):
  
    def __init__(self):
        super().__init__()

        self.initUI()
        
        
    def initUI(self):

        self.setAcceptDrops(True)

        self.button = Button('Button', self)
        self.button.move(100, 65)

        self.setWindowTitle('Click or Move')
        self.setGeometry(300, 300, 280, 150)
        

    def dragEnterEvent(self, e):
      
        e.accept()
        

    def dropEvent(self, e):

        position = e.pos()
        self.button.move(position)

        e.setDropAction(Qt.MoveAction)
        e.accept()
        
def test_drag2 ():
    app = QApplication(sys.argv)
    ex = Example()
    ale = Ale ()
    # install globally
    app.installEventFilter (ale)
    ex.show()
    app.exec_()