File indexing completed on 2024-05-12 15:28:21

 /***************************************************************************
 File                 : PresenterWidget.cpp
 Project              : LabPlot
 Description          : Widget for static presenting of worksheets
 --------------------------------------------------------------------
 Copyright            : (C) 2016 by Fabian Kristof (fkristofszabolcs@gmail.com)
 Copyright            : (C) 2018-2020 Alexander Semke (alexander.semke@web.de)
 ***************************************************************************/
 
 /***************************************************************************
 *                                                                         *
 *  This program is free software; you can redistribute it and/or modify   *
 *  it under the terms of the GNU General Public License as published by   *
 *  the Free Software Foundation; either version 2 of the License, or      *
 *  (at your option) any later version.                                    *
 *                                                                         *
 *  This program is distributed in the hope that it will be useful,        *
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of         *
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          *
 *  GNU General Public License for more details.                           *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the Free Software           *
 *   Foundation, Inc., 51 Franklin Street, Fifth Floor,                    *
 *   Boston, MA  02110-1301  USA                                           *
 *                                                                         *
 ***************************************************************************/
 #include "PresenterWidget.h"
 #include "SlidingPanel.h"
 
 #include <QApplication>
 #include <QKeyEvent>
 #include <QLabel>
 #include <QPushButton>
 #include <QScreen>
 #include <QTimeLine>
 
 PresenterWidget::PresenterWidget(const QPixmap &pixmap, const QString& worksheetName, QWidget *parent) : QWidget(parent),
     m_imageLabel(new QLabel(this)), m_timeLine(new QTimeLine(600)) {
 
     setAttribute(Qt::WA_DeleteOnClose);
     m_imageLabel->setPixmap(pixmap);
     m_imageLabel->adjustSize();
 
     const QRect& screenSize = QGuiApplication::primaryScreen()->availableGeometry();
 
     const int moveRight = (screenSize.width() - m_imageLabel->width()) / 2.0;
     const int moveDown = (screenSize.height() - m_imageLabel->height()) / 2.0;
     m_imageLabel->move(moveRight, moveDown);
 
     m_panel = new SlidingPanel(this, worksheetName);
     qApp->installEventFilter(this);
     connect(m_timeLine, &QTimeLine::valueChanged, m_panel, &SlidingPanel::movePanel);
     connect(m_panel->quitButton(), &QPushButton::clicked, this, [=]() {close();});
 }
 
 PresenterWidget::~PresenterWidget() {
     delete m_imageLabel;
     delete m_timeLine;
 }
 
 bool PresenterWidget::eventFilter(QObject* watched, QEvent* event) {
     Q_UNUSED(watched);
     if (event->type() == QEvent::MouseMove) {
         if (m_panel->y() != 0 && m_panel->rect().contains(QCursor::pos()))
             slideDown();
         else if (m_panel->y() == 0 && !m_panel->rect().contains(QCursor::pos()))
             slideUp();
     }
 
     return false;
 }
 
 void PresenterWidget::keyPressEvent(QKeyEvent *event) {
     if (event->key() == Qt::Key_Escape)
         close();
 }
 
 void PresenterWidget::focusOutEvent(QFocusEvent*) {
     close();
 }
 
 void PresenterWidget::slideDown() {
     m_timeLine->setDirection(QTimeLine::Forward);
     startTimeline();
 }
 
 void PresenterWidget::slideUp() {
     m_timeLine->setDirection(QTimeLine::Backward);
     startTimeline();
 }
 
 void PresenterWidget::startTimeline() {
     if (m_timeLine->state() != QTimeLine::Running)
         m_timeLine->start();
 }