02_drag_and_drop_button.py

#
# MIT License
#
# Copyright (c) 2023 Erriez
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
#
# Source: https://github.com/Erriez/pyside6-getting-started
#

from PySide6.QtWidgets import QApplication, QWidget, QPushButton
from PySide6.QtCore import Qt, QMimeData
from PySide6.QtGui import QDrag
import sys


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

    def mouseMoveEvent(self, e):
        if e.buttons() != Qt.RightButton:
            return

        mime_data = QMimeData()

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

        drop_action = drag.start(Qt.MoveAction)

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


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

        self.resize(250, 150)
        self.setWindowTitle('Click or move')

        self.setAcceptDrops(True)

        self.button = Button('Button', self)
        self.button.move(80, 65)

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

    def dropEvent(self, e):
        position = e.pos()
        self.button.move(position)

        e.setDropAction(Qt.MoveAction)
        e.accept()


def main():
    app = QApplication(sys.argv)
    window = Window()
    window.show()
    sys.exit(app.exec())


if __name__ == '__main__':
    main()