diff options
Diffstat (limited to 'sources/pyside2/doc/codesnippets/doc/src/snippets/porting4-dropevents/window.cpp')
-rw-r--r-- | sources/pyside2/doc/codesnippets/doc/src/snippets/porting4-dropevents/window.cpp | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/sources/pyside2/doc/codesnippets/doc/src/snippets/porting4-dropevents/window.cpp b/sources/pyside2/doc/codesnippets/doc/src/snippets/porting4-dropevents/window.cpp new file mode 100644 index 000000000..7d5222182 --- /dev/null +++ b/sources/pyside2/doc/codesnippets/doc/src/snippets/porting4-dropevents/window.cpp @@ -0,0 +1,134 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the examples of PySide2. +** +** $QT_BEGIN_LICENSE:BSD$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** BSD License Usage +** Alternatively, 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 The Qt Company Ltd 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." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QtWidgets> + +#include "window.h" + +MyWidget::MyWidget(QWidget *parent) + : QWidget(parent) +{ + QLabel *textLabel = new QLabel(tr("Data:"), this); + dataLabel = new QLabel(this); + dataLabel->setFixedSize(200, 200); + + QVBoxLayout *layout = new QVBoxLayout(this); + layout->addWidget(textLabel); + layout->addWidget(dataLabel); + + setAcceptDrops(true); + setWindowTitle(tr("Drop Events")); +} + +//! [0] +void MyWidget::dragEnterEvent(QDragEnterEvent *event) +{ + if (event->mimeData()->hasText() || event->mimeData()->hasImage()) + event->acceptProposedAction(); +} +//! [0] + +//! [1] +void MyWidget::dropEvent(QDropEvent *event) +{ + if (event->mimeData()->hasText()) + dataLabel->setText(event->mimeData()->text()); + else if (event->mimeData()->hasImage()) { + QVariant imageData = event->mimeData()->imageData(); + dataLabel->setPixmap(qvariant_cast<QPixmap>(imageData)); + } + event->acceptProposedAction(); +} +//! [1] + +//! [2] +void MyWidget::mousePressEvent(QMouseEvent *event) +{ +//! [2] + QString text = dataLabel->text(); + QPixmap iconPixmap(32, 32); + iconPixmap.fill(qRgba(255, 0, 0, 127)); + QImage image(100, 100, QImage::Format_RGB32); + image.fill(qRgb(0, 0, 255)); + +//! [3] + if (event->button() == Qt::LeftButton) { + + QDrag *drag = new QDrag(this); + QMimeData *mimeData = new QMimeData; + + mimeData->setText(text); + mimeData->setImageData(image); + drag->setMimeData(mimeData); + drag->setPixmap(iconPixmap); + + Qt::DropAction dropAction = drag->exec(); +//! [3] + // ... +//! [4] + event->accept(); + } +//! [4] + else if (event->button() == Qt::MidButton) { + + QDrag *drag = new QDrag(this); + QMimeData *mimeData = new QMimeData; + + mimeData->setImageData(image); + drag->setMimeData(mimeData); + drag->setPixmap(iconPixmap); + + Qt::DropAction dropAction = drag->exec(); + // ... + event->accept(); + } +//! [5] +} +//! [5] |