From 806dda08d685bc5f9ed71dfe8b61f21848d48066 Mon Sep 17 00:00:00 2001 From: Gabriel de Dietrich Date: Fri, 17 Aug 2012 13:23:19 +0200 Subject: Moving .qdoc files under examples/widgets/doc Updated those .qdoc files to refer to the new relative examples emplacement. Images and snippets to be moved later. Also grouped all widgets related examples under widgets. Change-Id: Ib29696e2d8948524537f53e8dda88f9ee26a597f Reviewed-by: J-P Nurmi --- .../widgets/draganddrop/puzzle/puzzlewidget.cpp | 214 +++++++++++++++++++++ 1 file changed, 214 insertions(+) create mode 100644 examples/widgets/draganddrop/puzzle/puzzlewidget.cpp (limited to 'examples/widgets/draganddrop/puzzle/puzzlewidget.cpp') diff --git a/examples/widgets/draganddrop/puzzle/puzzlewidget.cpp b/examples/widgets/draganddrop/puzzle/puzzlewidget.cpp new file mode 100644 index 0000000000..2e39f84e9e --- /dev/null +++ b/examples/widgets/draganddrop/puzzle/puzzlewidget.cpp @@ -0,0 +1,214 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** 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." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include + +#include "puzzlewidget.h" + +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() +{ + pieceLocations.clear(); + piecePixmaps.clear(); + pieceRects.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->pos())); + + if (event->mimeData()->hasFormat("image/x-puzzle-piece") + && findPiece(targetSquare(event->pos())) == -1) { + + highlightedRect = targetSquare(event->pos()); + 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->pos())) == -1) { + + QByteArray pieceData = event->mimeData()->data("image/x-puzzle-piece"); + QDataStream dataStream(&pieceData, QIODevice::ReadOnly); + QRect square = targetSquare(event->pos()); + QPixmap pixmap; + QPoint location; + dataStream >> pixmap >> location; + + pieceLocations.append(location); + piecePixmaps.append(pixmap); + pieceRects.append(square); + + highlightedRect = QRect(); + update(square); + + event->setDropAction(Qt::MoveAction); + event->accept(); + + if (location == QPoint(square.x()/pieceSize(), square.y()/pieceSize())) { + inPlace++; + if (inPlace == 25) + emit puzzleCompleted(); + } + } else { + highlightedRect = QRect(); + event->ignore(); + } +} + +int PuzzleWidget::findPiece(const QRect &pieceRect) const +{ + for (int i = 0; i < pieceRects.size(); ++i) { + if (pieceRect == pieceRects[i]) { + return i; + } + } + return -1; +} + +void PuzzleWidget::mousePressEvent(QMouseEvent *event) +{ + QRect square = targetSquare(event->pos()); + int found = findPiece(square); + + if (found == -1) + return; + + QPoint location = pieceLocations[found]; + QPixmap pixmap = piecePixmaps[found]; + pieceLocations.removeAt(found); + piecePixmaps.removeAt(found); + pieceRects.removeAt(found); + + if (location == QPoint(square.x()/pieceSize(), square.y()/pieceSize())) + inPlace--; + + update(square); + + QByteArray itemData; + QDataStream dataStream(&itemData, QIODevice::WriteOnly); + + dataStream << pixmap << location; + + QMimeData *mimeData = new QMimeData; + mimeData->setData("image/x-puzzle-piece", itemData); + + QDrag *drag = new QDrag(this); + drag->setMimeData(mimeData); + drag->setHotSpot(event->pos() - square.topLeft()); + drag->setPixmap(pixmap); + + if (!(drag->exec(Qt::MoveAction) == Qt::MoveAction)) { + pieceLocations.insert(found, location); + piecePixmaps.insert(found, pixmap); + pieceRects.insert(found, square); + update(targetSquare(event->pos())); + + if (location == QPoint(square.x()/pieceSize(), square.y()/pieceSize())) + inPlace++; + } +} + +void PuzzleWidget::paintEvent(QPaintEvent *event) +{ + QPainter painter; + painter.begin(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 (int i = 0; i < pieceRects.size(); ++i) { + painter.drawPixmap(pieceRects[i], piecePixmaps[i]); + } + painter.end(); +} + +const QRect PuzzleWidget::targetSquare(const QPoint &position) const +{ + return QRect(position.x()/pieceSize() * pieceSize(), position.y()/pieceSize() * pieceSize(), pieceSize(), pieceSize()); +} + +int PuzzleWidget::pieceSize() const +{ + return m_ImageSize / 5; +} + +int PuzzleWidget::imageSize() const +{ + return m_ImageSize; +} -- cgit v1.2.3