#!/usr/bin/env python ############################################################################# ## ## Copyright (C) 2010 Riverbank Computing Limited. ## Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). ## All rights reserved. ## ## This file is part of the examples of PyQt. ## ## $QT_BEGIN_LICENSE:BSD$ ## You may use this file under the terms of the BSD license as follows: ## ## "Redistribution and use in source and binary forms, with or without ## modification, are permitted provided that the following conditions are ## met: ## * Redistributions of source code must retain the above copyright ## notice, this list of conditions and the following disclaimer. ## * Redistributions in binary form must reproduce the above copyright ## notice, this list of conditions and the following disclaimer in ## the documentation and/or other materials provided with the ## distribution. ## * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor ## the names of its contributors may be used to endorse or promote ## products derived from this software without specific prior written ## permission. ## ## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ## $QT_END_LICENSE$ ## ############################################################################# from PyQt4 import QtCore, QtGui try: import draggableicons_rc3 except ImportError: import draggableicons_rc2 class DragWidget(QtGui.QFrame): def __init__(self, parent=None): super(DragWidget, self).__init__(parent) self.setMinimumSize(200, 200) self.setFrameStyle(QtGui.QFrame.Sunken | QtGui.QFrame.StyledPanel) self.setAcceptDrops(True) boatIcon = QtGui.QLabel(self) boatIcon.setPixmap(QtGui.QPixmap(':/images/boat.png')) boatIcon.move(20, 20) boatIcon.show() boatIcon.setAttribute(QtCore.Qt.WA_DeleteOnClose) carIcon = QtGui.QLabel(self) carIcon.setPixmap(QtGui.QPixmap(':/images/car.png')) carIcon.move(120, 20) carIcon.show() carIcon.setAttribute(QtCore.Qt.WA_DeleteOnClose) houseIcon = QtGui.QLabel(self) houseIcon.setPixmap(QtGui.QPixmap(':/images/house.png')) houseIcon.move(20, 120) houseIcon.show() houseIcon.setAttribute(QtCore.Qt.WA_DeleteOnClose) def dragEnterEvent(self, event): if event.mimeData().hasFormat('application/x-dnditemdata'): if event.source() == self: event.setDropAction(QtCore.Qt.MoveAction) event.accept() else: event.acceptProposedAction() else: event.ignore() dragMoveEvent = dragEnterEvent def dropEvent(self, event): if event.mimeData().hasFormat('application/x-dnditemdata'): itemData = event.mimeData().data('application/x-dnditemdata') dataStream = QtCore.QDataStream(itemData, QtCore.QIODevice.ReadOnly) pixmap = QtGui.QPixmap() offset = QtCore.QPoint() dataStream >> pixmap >> offset newIcon = QtGui.QLabel(self) newIcon.setPixmap(pixmap) newIcon.move(event.pos() - offset) newIcon.show() newIcon.setAttribute(QtCore.Qt.WA_DeleteOnClose) if event.source() == self: event.setDropAction(QtCore.Qt.MoveAction) event.accept() else: event.acceptProposedAction() else: event.ignore() def mousePressEvent(self, event): child = self.childAt(event.pos()) if not child: return pixmap = QtGui.QPixmap(child.pixmap()) itemData = QtCore.QByteArray() dataStream = QtCore.QDataStream(itemData, QtCore.QIODevice.WriteOnly) dataStream << pixmap << QtCore.QPoint(event.pos() - child.pos()) mimeData = QtCore.QMimeData() mimeData.setData('application/x-dnditemdata', itemData) drag = QtGui.QDrag(self) drag.setMimeData(mimeData) drag.setPixmap(pixmap) drag.setHotSpot(event.pos() - child.pos()) tempPixmap = QtGui.QPixmap(pixmap) painter = QtGui.QPainter() painter.begin(tempPixmap) painter.fillRect(pixmap.rect(), QtGui.QColor(127, 127, 127, 127)) painter.end() child.setPixmap(tempPixmap) if drag.exec_(QtCore.Qt.CopyAction | QtCore.Qt.MoveAction, QtCore.Qt.CopyAction) == QtCore.Qt.MoveAction: child.close() else: child.show() child.setPixmap(pixmap) if __name__ == '__main__': import sys app = QtGui.QApplication(sys.argv) mainWidget = QtGui.QWidget() horizontalLayout = QtGui.QHBoxLayout() horizontalLayout.addWidget(DragWidget()) horizontalLayout.addWidget(DragWidget()) mainWidget.setLayout(horizontalLayout) mainWidget.setWindowTitle(QtCore.QObject.tr(mainWidget, "Draggable Icons")) mainWidget.show() sys.exit(app.exec_())