File indexing completed on 2024-05-05 05:38:39

 /*
     SPDX-FileCopyrightText: 2017 David Edmundson <davidedmundson@kde.org>
 
     SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #include "xwindowsystemeventbatcher.h"
 
 #include <QDebug>
 #include <QTimerEvent>
 
 #include <KX11Extras>
 
 #define BATCH_TIME 10
 
 static const NET::Properties s_cachableProperties = NET::WMName | NET::WMVisibleName;
 static const NET::Properties2 s_cachableProperties2 = NET::WM2UserTime;
 
 XWindowSystemEventBatcher::XWindowSystemEventBatcher(QObject *parent)
     : QObject(parent)
 {
     connect(KX11Extras::self(), &KX11Extras::windowAdded, this, &XWindowSystemEventBatcher::windowAdded);
 
     // remove our cache entries when we lose a window, otherwise we might fire change signals after a window is destroyed which wouldn't make sense
     connect(KX11Extras::self(), &KX11Extras::windowRemoved, this, [this](WId wid) {
         m_cache.remove(wid);
         Q_EMIT windowRemoved(wid);
     });
 
     QObject::connect(KX11Extras::self(), &KX11Extras::windowChanged, this, [this](WId window, NET::Properties properties, NET::Properties2 properties2) {
         // if properties contained only cachable flags
         if ((properties | s_cachableProperties) == s_cachableProperties && (properties2 | s_cachableProperties2) == s_cachableProperties2) {
             m_cache[window].properties |= properties;
             m_cache[window].properties2 |= properties2;
             if (!m_timerId) {
                 m_timerId = startTimer(BATCH_TIME);
             }
         } else {
             // submit all caches along with any real updates
             auto it = m_cache.constFind(window);
             if (it != m_cache.constEnd()) {
                 properties |= it->properties;
                 properties2 |= it->properties2;
                 m_cache.erase(it);
             }
             Q_EMIT windowChanged(window, properties, properties2);
         }
     });
 }
 
 void XWindowSystemEventBatcher::timerEvent(QTimerEvent *event)
 {
     if (event->timerId() != m_timerId) {
         return;
     }
     for (auto it = m_cache.constBegin(); it != m_cache.constEnd(); it++) {
         Q_EMIT windowChanged(it.key(), it.value().properties, it.value().properties2);
     };
     m_cache.clear();
     killTimer(m_timerId);
     m_timerId = 0;
 }