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79 lines
3.3 KiB
79 lines
3.3 KiB
/******************************************************************** |
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Copyright 2017 David Edmundson <davidedmundson@kde.org> |
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This library is free software; you can redistribute it and/or |
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modify it under the terms of the GNU Lesser General Public |
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License as published by the Free Software Foundation; either |
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version 2.1 of the License, or (at your option) version 3, or any |
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later version accepted by the membership of KDE e.V. (or its |
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successor approved by the membership of KDE e.V.), which shall |
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act as a proxy defined in Section 6 of version 3 of the license. |
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This library is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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Lesser General Public License for more details. |
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You should have received a copy of the GNU Lesser General Public |
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License along with this library. If not, see <http://www.gnu.org/licenses/>. |
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*********************************************************************/ |
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#include "xwindowsystemeventbatcher.h" |
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#include <QTimerEvent> |
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#include <QDebug> |
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#define BATCH_TIME 10 |
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static const NET::Properties s_cachableProperties = NET::WMName | NET::WMVisibleName; |
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static const NET::Properties2 s_cachableProperties2 = NET::WM2UserTime; |
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XWindowSystemEventBatcher::XWindowSystemEventBatcher(QObject* parent) |
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: QObject(parent) |
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{ |
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connect(KWindowSystem::self(), &KWindowSystem::windowAdded, this, &XWindowSystemEventBatcher::windowAdded); |
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//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 |
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connect(KWindowSystem::self(), &KWindowSystem::windowRemoved, this, [this](WId wid) { |
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m_cache.remove(wid); |
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emit windowRemoved(wid); |
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}); |
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void (KWindowSystem::*myWindowChangeSignal)(WId window, |
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NET::Properties properties, NET::Properties2 properties2) = &KWindowSystem::windowChanged; |
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QObject::connect(KWindowSystem::self(), myWindowChangeSignal, this, |
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[this](WId window, NET::Properties properties, NET::Properties2 properties2) { |
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//if properties contained only cachable flags |
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if ((properties | s_cachableProperties) == s_cachableProperties && |
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(properties2 | s_cachableProperties2) == s_cachableProperties2) { |
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m_cache[window].properties |= properties; |
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m_cache[window].properties2 |= properties2; |
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if (!m_timerId) { |
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m_timerId = startTimer(BATCH_TIME); |
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} |
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} else { |
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//submit all caches along with any real updates |
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auto it = m_cache.constFind(window); |
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if (it != m_cache.constEnd()) { |
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properties |= it->properties; |
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properties2 |= it->properties2; |
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m_cache.erase(it); |
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} |
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emit windowChanged(window, properties, properties2); |
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} |
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} |
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); |
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} |
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void XWindowSystemEventBatcher::timerEvent(QTimerEvent* event) |
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{ |
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if (event->timerId() != m_timerId) { |
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return; |
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} |
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for (auto it = m_cache.constBegin(); it!= m_cache.constEnd(); it++) { |
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emit windowChanged(it.key(), it.value().properties, it.value().properties2); |
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}; |
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m_cache.clear(); |
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killTimer(m_timerId); |
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m_timerId = 0; |
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}
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