| /**************************************************************************** |
| ** |
| ** 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 "imageitem.h" |
| |
| //! [0] |
| ImageItem::ImageItem(int id, const QPixmap &pixmap, QGraphicsItem *parent) |
| : QGraphicsPixmapItem(pixmap, parent) |
| { |
| recordId = id; |
| setAcceptHoverEvents(true); |
| |
| timeLine.setDuration(150); |
| timeLine.setFrameRange(0, 150); |
| |
| connect(&timeLine, &QTimeLine::frameChanged, this, &ImageItem::setFrame); |
| connect(&timeLine, &QTimeLine::finished, this, &ImageItem::updateItemPosition); |
| |
| adjust(); |
| } |
| //! [0] |
| |
| //! [1] |
| void ImageItem::hoverEnterEvent(QGraphicsSceneHoverEvent * /*event*/) |
| { |
| timeLine.setDirection(QTimeLine::Forward); |
| |
| if (z != 1.0) { |
| z = 1.0; |
| updateItemPosition(); |
| } |
| |
| if (timeLine.state() == QTimeLine::NotRunning) |
| timeLine.start(); |
| } |
| //! [1] |
| |
| //! [2] |
| void ImageItem::hoverLeaveEvent(QGraphicsSceneHoverEvent * /*event*/) |
| { |
| timeLine.setDirection(QTimeLine::Backward); |
| if (z != 0.0) |
| z = 0.0; |
| |
| if (timeLine.state() == QTimeLine::NotRunning) |
| timeLine.start(); |
| } |
| //! [2] |
| |
| //! [3] |
| void ImageItem::setFrame(int frame) |
| { |
| adjust(); |
| QPointF center = boundingRect().center(); |
| |
| setTransform(QTransform::fromTranslate(center.x(), center.y()), true); |
| setTransform(QTransform::fromScale(1 + frame / 330.0, 1 + frame / 330.0), true); |
| setTransform(QTransform::fromTranslate(-center.x(), -center.y()), true); |
| } |
| //! [3] |
| |
| //! [4] |
| void ImageItem::adjust() |
| { |
| setTransform(QTransform::fromScale(120 / boundingRect().width(), |
| 120 / boundingRect().height())); |
| } |
| //! [4] |
| |
| //! [5] |
| int ImageItem::id() const |
| { |
| return recordId; |
| } |
| //! [5] |
| |
| //! [6] |
| void ImageItem::updateItemPosition() |
| { |
| setZValue(z); |
| } |
| //! [6] |
| |
| |