#!/usr/bin/env python ############################################################################# ## ## 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." ## $QT_END_LICENSE$ ## ############################################################################# # This is only needed for Python v2 but is harmless for Python v3. import sip sip.setapi('QString', 2) sip.setapi('QVariant', 2) from PyQt4 import QtCore, QtGui class DropArea(QtGui.QLabel): changed = QtCore.pyqtSignal(QtCore.QMimeData) def __init__(self, parent = None): super(DropArea, self).__init__(parent) self.setMinimumSize(200, 200) self.setFrameStyle(QtGui.QFrame.Sunken | QtGui.QFrame.StyledPanel) self.setAlignment(QtCore.Qt.AlignCenter) self.setAcceptDrops(True) self.setAutoFillBackground(True) self.clear() def dragEnterEvent(self, event): self.setText("<drop content>") self.setBackgroundRole(QtGui.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(QtGui.QPixmap(mimeData.imageData())) elif mimeData.hasHtml(): self.setText(mimeData.html()) self.setTextFormat(QtCore.Qt.RichText) elif mimeData.hasText(): self.setText(mimeData.text()) self.setTextFormat(QtCore.Qt.PlainText) elif mimeData.hasUrls(): self.setText("\n".join([url.path() for url in mimeData.urls()])) else: self.setText("Cannot display data") self.setBackgroundRole(QtGui.QPalette.Dark) event.acceptProposedAction() def dragLeaveEvent(self, event): self.clear() event.accept() def clear(self): self.setText("<drop content>") self.setBackgroundRole(QtGui.QPalette.Dark) self.changed.emit(None) class DropSiteWindow(QtGui.QWidget): def __init__(self): super(DropSiteWindow, self).__init__() self.abstractLabel = QtGui.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 = QtGui.QTableWidget() self.formatsTable.setColumnCount(2) self.formatsTable.setEditTriggers(QtGui.QAbstractItemView.NoEditTriggers) self.formatsTable.setHorizontalHeaderLabels(["Format", "Content"]) self.formatsTable.horizontalHeader().setStretchLastSection(True) self.clearButton = QtGui.QPushButton("Clear") self.quitButton = QtGui.QPushButton("Quit") self.buttonBox = QtGui.QDialogButtonBox() self.buttonBox.addButton(self.clearButton, QtGui.QDialogButtonBox.ActionRole) self.buttonBox.addButton(self.quitButton, QtGui.QDialogButtonBox.RejectRole) self.quitButton.pressed.connect(self.close) self.clearButton.pressed.connect(self.dropArea.clear) mainLayout = QtGui.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 = QtGui.QTableWidgetItem(format) formatItem.setFlags(QtCore.Qt.ItemIsEnabled) formatItem.setTextAlignment(QtCore.Qt.AlignTop | QtCore.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, QtGui.QTableWidgetItem(format)) self.formatsTable.setItem(row, 1, QtGui.QTableWidgetItem(text)) self.formatsTable.resizeColumnToContents(0) if __name__ == '__main__': import sys app = QtGui.QApplication(sys.argv) window = DropSiteWindow() window.show() sys.exit(app.exec_())