diff options
Diffstat (limited to 'examples/widgets/draganddrop/fridgemagnets/dragwidget.cpp')
| -rw-r--r-- | examples/widgets/draganddrop/fridgemagnets/dragwidget.cpp | 223 |
1 files changed, 0 insertions, 223 deletions
diff --git a/examples/widgets/draganddrop/fridgemagnets/dragwidget.cpp b/examples/widgets/draganddrop/fridgemagnets/dragwidget.cpp deleted file mode 100644 index 14e8a1a879..0000000000 --- a/examples/widgets/draganddrop/fridgemagnets/dragwidget.cpp +++ /dev/null @@ -1,223 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the examples of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** 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 "draglabel.h" -#include "dragwidget.h" - -#include <QtWidgets> - -static inline QString fridgetMagnetsMimeType() { return QStringLiteral("application/x-fridgemagnet"); } - -//! [0] -DragWidget::DragWidget(QWidget *parent) - : QWidget(parent) -{ - QFile dictionaryFile(QStringLiteral(":/dictionary/words.txt")); - dictionaryFile.open(QFile::ReadOnly); - QTextStream inputStream(&dictionaryFile); -//! [0] - -//! [1] - int x = 5; - int y = 5; - - while (!inputStream.atEnd()) { - QString word; - inputStream >> word; - if (!word.isEmpty()) { - DragLabel *wordLabel = new DragLabel(word, this); - wordLabel->move(x, y); - wordLabel->show(); - wordLabel->setAttribute(Qt::WA_DeleteOnClose); - x += wordLabel->width() + 2; - if (x >= 245) { - x = 5; - y += wordLabel->height() + 2; - } - } - } -//! [1] - -//! [2] - QPalette newPalette = palette(); - newPalette.setColor(QPalette::Window, Qt::white); - setPalette(newPalette); - - setMinimumSize(400, qMax(200, y)); - setWindowTitle(tr("Fridge Magnets")); -//! [2] //! [3] - setAcceptDrops(true); -} -//! [3] - -//! [4] -void DragWidget::dragEnterEvent(QDragEnterEvent *event) -{ -//! [4] //! [5] - if (event->mimeData()->hasFormat(fridgetMagnetsMimeType())) { - if (children().contains(event->source())) { - event->setDropAction(Qt::MoveAction); - event->accept(); - } else { - event->acceptProposedAction(); -//! [5] //! [6] - } -//! [6] //! [7] - } else if (event->mimeData()->hasText()) { - event->acceptProposedAction(); - } else { - event->ignore(); - } -} -//! [7] - -//! [8] -void DragWidget::dragMoveEvent(QDragMoveEvent *event) -{ - if (event->mimeData()->hasFormat(fridgetMagnetsMimeType())) { - if (children().contains(event->source())) { - event->setDropAction(Qt::MoveAction); - event->accept(); - } else { - event->acceptProposedAction(); - } - } else if (event->mimeData()->hasText()) { - event->acceptProposedAction(); - } else { - event->ignore(); - } -} -//! [8] - -//! [9] -void DragWidget::dropEvent(QDropEvent *event) -{ - if (event->mimeData()->hasFormat(fridgetMagnetsMimeType())) { - const QMimeData *mime = event->mimeData(); -//! [9] //! [10] - QByteArray itemData = mime->data(fridgetMagnetsMimeType()); - QDataStream dataStream(&itemData, QIODevice::ReadOnly); - - QString text; - QPoint offset; - dataStream >> text >> offset; -//! [10] -//! [11] - DragLabel *newLabel = new DragLabel(text, this); - newLabel->move(event->position().toPoint() - offset); - newLabel->show(); - newLabel->setAttribute(Qt::WA_DeleteOnClose); - - if (event->source() == this) { - event->setDropAction(Qt::MoveAction); - event->accept(); - } else { - event->acceptProposedAction(); - } -//! [11] //! [12] - } else if (event->mimeData()->hasText()) { - QStringList pieces = event->mimeData()->text().split( - QRegularExpression(QStringLiteral("\\s+")), Qt::SkipEmptyParts); - QPoint position = event->position().toPoint(); - - for (const QString &piece : pieces) { - DragLabel *newLabel = new DragLabel(piece, this); - newLabel->move(position); - newLabel->show(); - newLabel->setAttribute(Qt::WA_DeleteOnClose); - - position += QPoint(newLabel->width(), 0); - } - - event->acceptProposedAction(); - } else { - event->ignore(); - } -} -//! [12] - -//! [13] -void DragWidget::mousePressEvent(QMouseEvent *event) -{ -//! [13] -//! [14] - DragLabel *child = static_cast<DragLabel*>(childAt(event->position().toPoint())); - if (!child) - return; - - QPoint hotSpot = event->position().toPoint() - child->pos(); - - QByteArray itemData; - QDataStream dataStream(&itemData, QIODevice::WriteOnly); - dataStream << child->labelText() << QPoint(hotSpot); -//! [14] - -//! [15] - QMimeData *mimeData = new QMimeData; - mimeData->setData(fridgetMagnetsMimeType(), itemData); - mimeData->setText(child->labelText()); -//! [15] - -//! [16] - QDrag *drag = new QDrag(this); - drag->setMimeData(mimeData); - drag->setPixmap(child->pixmap(Qt::ReturnByValue)); - drag->setHotSpot(hotSpot); - - child->hide(); -//! [16] - -//! [17] - if (drag->exec(Qt::MoveAction | Qt::CopyAction, Qt::CopyAction) == Qt::MoveAction) - child->close(); - else - child->show(); -} -//! [17] |