File indexing completed on 2024-04-28 04:21:27

 // SPDX-FileCopyrightText: 2003-2023 The KPhotoAlbum Development Team
 // SPDX-FileCopyrightText: 2022 Johannes Zarl-Zierl <johannes@zarl-zierl.at>
 //
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include "TransientDisplay.h"
 
 #include <KLocalizedString>
 #include <QLabel>
 #include <QLayout>
 #include <QTimeLine>
 #include <QTimer>
 
 Viewer::TransientDisplay::TransientDisplay(QWidget *parent)
     : QLabel(parent)
 {
     m_timeLine = new QTimeLine(1000, this);
     connect(m_timeLine, &QTimeLine::frameChanged, this, qOverload<int>(&TransientDisplay::setAlphaChannel));
     m_timeLine->setFrameRange(0, 170);
     m_timeLine->setDirection(QTimeLine::Backward);
 
     m_timer = new QTimer(this);
     m_timer->setSingleShot(true);
     connect(m_timer, &QTimer::timeout, [this] {
         if (m_nextFadeAction == FadeOut)
             m_timeLine->start();
         else
             hide();
     });
 
     setAutoFillBackground(true);
 }
 
 void Viewer::TransientDisplay::display(const QString &text, std::chrono::milliseconds duration, FadeAction action)
 {
     setText(QLatin1String("<p><center><font size=\"+4\">%1</font></center></p>").arg(text));
     m_nextFadeAction = action;
     go(duration);
 }
 
 void Viewer::TransientDisplay::go(std::chrono::milliseconds duration)
 {
     resize(sizeHint());
     QWidget *p = static_cast<QWidget *>(parent());
     move((p->width() - width()) / 2, (p->height() - height()) / 2);
 
     setAlphaChannel(170, 255);
     m_timer->start(duration);
     m_timeLine->stop();
 
     show();
     raise();
 }
 
 void Viewer::TransientDisplay::setAlphaChannel(int backgroundAlpha, int labelAlpha)
 {
     QPalette p = palette();
     QColor bgColor = p.window().color();
     bgColor.setAlpha(backgroundAlpha);
     p.setColor(QPalette::Window, bgColor);
     QColor fgColor = p.windowText().color();
     fgColor.setAlpha(labelAlpha);
     p.setColor(QPalette::WindowText, fgColor);
     setPalette(p);
     // re-enable palette propagation:
     setAttribute(Qt::WA_SetPalette);
 }
 
 void Viewer::TransientDisplay::setAlphaChannel(int alpha)
 {
     setAlphaChannel(alpha, alpha);
     if (alpha == 0)
         hide();
 }
 
 // vi:expandtab:tabstop=4 shiftwidth=4:
 
 #include "moc_TransientDisplay.cpp"