#!/usr/bin/env python
#############################################################################
##
## Copyright (C) 2013 Riverbank Computing Limited
## Copyright (C) 2010 Hans-Peter Jansen <hpj@urpla.net>.
## 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 PyQt5.QtCore import pyqtSignal, QMimeData, Qt
from PyQt5.QtGui import QPalette, QPixmap
from PyQt5.QtWidgets import (QAbstractItemView, QApplication, QDialogButtonBox,
QFrame, QLabel, QPushButton, QTableWidget, QTableWidgetItem,
QVBoxLayout, QWidget)
class DropArea(QLabel):
changed = pyqtSignal(QMimeData)
def __init__(self, parent = None):
super(DropArea, self).__init__(parent)
self.setMinimumSize(200, 200)
self.setFrameStyle(QFrame.Sunken | QFrame.StyledPanel)
self.setAlignment(Qt.AlignCenter)
self.setAcceptDrops(True)
self.setAutoFillBackground(True)
self.clear()
def dragEnterEvent(self, event):
self.setText("<drop content>")
self.setBackgroundRole(QPalette.Highlight)
event.acceptProposedAction()
self.changed.emit(event.mimeData())
def dragMoveEvent(self, event):
event.acceptProposedAction()
def dropEvent(self, event):
mimeData = event.mimeData()
if mimeData.hasImage():
self.setPixmap(QPixmap(mimeData.imageData()))
elif mimeData.hasHtml():
self.setText(mimeData.html())
self.setTextFormat(Qt.RichText)
elif mimeData.hasText():
self.setText(mimeData.text())
self.setTextFormat(Qt.PlainText)
elif mimeData.hasUrls():
self.setText("\n".join([url.path() for url in mimeData.urls()]))
else:
self.setText("Cannot display data")
self.setBackgroundRole(QPalette.Dark)
event.acceptProposedAction()
def dragLeaveEvent(self, event):
self.clear()
event.accept()
def clear(self):
self.setText("<drop content>")
self.setBackgroundRole(QPalette.Dark)
self.changed.emit(None)
class DropSiteWindow(QWidget):
def __init__(self):
super(DropSiteWindow, self).__init__()
self.abstractLabel = QLabel(
"This example accepts drags from other applications and "
"displays the MIME types provided by the drag object.")
self.abstractLabel.setWordWrap(True)
self.abstractLabel.adjustSize()
self.dropArea = DropArea()
self.dropArea.changed.connect(self.updateFormatsTable)
self.formatsTable = QTableWidget()
self.formatsTable.setColumnCount(2)
self.formatsTable.setEditTriggers(QAbstractItemView.NoEditTriggers)
self.formatsTable.setHorizontalHeaderLabels(["Format", "Content"])
self.formatsTable.horizontalHeader().setStretchLastSection(True)
self.clearButton = QPushButton("Clear")
self.quitButton = QPushButton("Quit")
self.buttonBox = QDialogButtonBox()
self.buttonBox.addButton(self.clearButton, QDialogButtonBox.ActionRole)
self.buttonBox.addButton(self.quitButton, QDialogButtonBox.RejectRole)
self.quitButton.pressed.connect(self.close)
self.clearButton.pressed.connect(self.dropArea.clear)
mainLayout = QVBoxLayout()
mainLayout.addWidget(self.abstractLabel)
mainLayout.addWidget(self.dropArea)
mainLayout.addWidget(self.formatsTable)
mainLayout.addWidget(self.buttonBox)
self.setLayout(mainLayout)
self.setWindowTitle("Drop Site")
self.setMinimumSize(350, 500)
def updateFormatsTable(self, mimeData=None):
self.formatsTable.setRowCount(0)
if mimeData is None:
return
for format in mimeData.formats():
formatItem = QTableWidgetItem(format)
formatItem.setFlags(Qt.ItemIsEnabled)
formatItem.setTextAlignment(Qt.AlignTop | Qt.AlignLeft)
if format == 'text/plain':
text = mimeData.text().strip()
elif format == 'text/html':
text = mimeData.html().strip()
elif format == 'text/uri-list':
text = " ".join([url.toString() for url in mimeData.urls()])
else:
text = " ".join(["%02X" % ord(datum) for datum in mimeData.data(format)])
row = self.formatsTable.rowCount()
self.formatsTable.insertRow(row)
self.formatsTable.setItem(row, 0, QTableWidgetItem(format))
self.formatsTable.setItem(row, 1, QTableWidgetItem(text))
self.formatsTable.resizeColumnToContents(0)
if __name__ == '__main__':
import sys
app = QApplication(sys.argv)
window = DropSiteWindow()
window.show()
sys.exit(app.exec_())
