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Diffstat (limited to 'examples/widgets/itemviews/puzzle/puzzlewidget.cpp')
-rw-r--r-- | examples/widgets/itemviews/puzzle/puzzlewidget.cpp | 210 |
1 files changed, 0 insertions, 210 deletions
diff --git a/examples/widgets/itemviews/puzzle/puzzlewidget.cpp b/examples/widgets/itemviews/puzzle/puzzlewidget.cpp deleted file mode 100644 index e5e0192c96..0000000000 --- a/examples/widgets/itemviews/puzzle/puzzlewidget.cpp +++ /dev/null @@ -1,210 +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 "puzzlewidget.h" - -#include <QtWidgets> - -PuzzleWidget::PuzzleWidget(int imageSize, QWidget *parent) - : QWidget(parent), m_ImageSize(imageSize) -{ - setAcceptDrops(true); - setMinimumSize(m_ImageSize, m_ImageSize); - setMaximumSize(m_ImageSize, m_ImageSize); -} - -void PuzzleWidget::clear() -{ - pieces.clear(); - highlightedRect = QRect(); - inPlace = 0; - update(); -} - -void PuzzleWidget::dragEnterEvent(QDragEnterEvent *event) -{ - if (event->mimeData()->hasFormat("image/x-puzzle-piece")) - event->accept(); - else - event->ignore(); -} - -void PuzzleWidget::dragLeaveEvent(QDragLeaveEvent *event) -{ - QRect updateRect = highlightedRect; - highlightedRect = QRect(); - update(updateRect); - event->accept(); -} - -void PuzzleWidget::dragMoveEvent(QDragMoveEvent *event) -{ - QRect updateRect = highlightedRect.united(targetSquare(event->position().toPoint())); - - if (event->mimeData()->hasFormat("image/x-puzzle-piece") - && findPiece(targetSquare(event->position().toPoint())) == -1) { - - highlightedRect = targetSquare(event->position().toPoint()); - event->setDropAction(Qt::MoveAction); - event->accept(); - } else { - highlightedRect = QRect(); - event->ignore(); - } - - update(updateRect); -} - -void PuzzleWidget::dropEvent(QDropEvent *event) -{ - if (event->mimeData()->hasFormat("image/x-puzzle-piece") - && findPiece(targetSquare(event->position().toPoint())) == -1) { - - QByteArray pieceData = event->mimeData()->data("image/x-puzzle-piece"); - QDataStream dataStream(&pieceData, QIODevice::ReadOnly); - Piece piece; - piece.rect = targetSquare(event->position().toPoint()); - dataStream >> piece.pixmap >> piece.location; - - pieces.append(piece); - - highlightedRect = QRect(); - update(piece.rect); - - event->setDropAction(Qt::MoveAction); - event->accept(); - - if (piece.location == piece.rect.topLeft() / pieceSize()) { - inPlace++; - if (inPlace == 25) - emit puzzleCompleted(); - } - } else { - highlightedRect = QRect(); - event->ignore(); - } -} - -int PuzzleWidget::findPiece(const QRect &pieceRect) const -{ - for (int i = 0, size = pieces.size(); i < size; ++i) { - if (pieces.at(i).rect == pieceRect) - return i; - } - return -1; -} - -void PuzzleWidget::mousePressEvent(QMouseEvent *event) -{ - QRect square = targetSquare(event->position().toPoint()); - int found = findPiece(square); - - if (found == -1) - return; - - Piece piece = pieces.takeAt(found); - - if (piece.location == square.topLeft() / pieceSize()) - inPlace--; - - update(square); - - QByteArray itemData; - QDataStream dataStream(&itemData, QIODevice::WriteOnly); - - dataStream << piece.pixmap << piece.location; - - QMimeData *mimeData = new QMimeData; - mimeData->setData("image/x-puzzle-piece", itemData); - - QDrag *drag = new QDrag(this); - drag->setMimeData(mimeData); - drag->setHotSpot(event->position().toPoint() - square.topLeft()); - drag->setPixmap(piece.pixmap); - - if (drag->exec(Qt::MoveAction) == Qt::IgnoreAction) { - pieces.insert(found, piece); - update(targetSquare(event->position().toPoint())); - - if (piece.location == QPoint(square.x() / pieceSize(), square.y() / pieceSize())) - inPlace++; - } -} - -void PuzzleWidget::paintEvent(QPaintEvent *event) -{ - QPainter painter(this); - painter.fillRect(event->rect(), Qt::white); - - if (highlightedRect.isValid()) { - painter.setBrush(QColor("#ffcccc")); - painter.setPen(Qt::NoPen); - painter.drawRect(highlightedRect.adjusted(0, 0, -1, -1)); - } - - for (const Piece &piece : pieces) - painter.drawPixmap(piece.rect, piece.pixmap); -} - -const QRect PuzzleWidget::targetSquare(const QPoint &position) const -{ - QPoint topLeft = QPoint(position.x() / pieceSize(), position.y() / pieceSize()) * pieceSize(); - return QRect(topLeft, QSize(pieceSize(), pieceSize())); -} - -int PuzzleWidget::pieceSize() const -{ - return m_ImageSize / 5; -} - -int PuzzleWidget::imageSize() const -{ - return m_ImageSize; -} |