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128 lines
3.6 KiB
128 lines
3.6 KiB
/******************************************************************** |
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KWin - the KDE window manager |
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This file is part of the KDE project. |
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Copyright (C) 2014 Martin Gräßlin <mgraesslin@kde.org> |
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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This program 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 |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*********************************************************************/ |
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#include "screens_xrandr.h" |
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#include "xcbutils.h" |
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namespace KWin |
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{ |
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XRandRScreens::XRandRScreens(QObject *parent) |
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: Screens(parent) |
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, X11EventFilter(Xcb::Extensions::self()->randrNotifyEvent()) |
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{ |
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} |
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XRandRScreens::~XRandRScreens() = default; |
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template <typename T> |
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void XRandRScreens::update() |
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{ |
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auto fallback = [this]() { |
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m_geometries << QRect(); |
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setCount(1); |
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}; |
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m_geometries.clear(); |
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T resources(rootWindow()); |
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if (resources.isNull()) { |
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fallback(); |
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return; |
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} |
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xcb_randr_crtc_t *crtcs = resources.crtcs(); |
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QVector<Xcb::RandR::CrtcInfo> infos(resources->num_crtcs); |
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for (int i = 0; i < resources->num_crtcs; ++i) { |
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infos[i] = Xcb::RandR::CrtcInfo(crtcs[i], resources->config_timestamp); |
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} |
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for (int i = 0; i < resources->num_crtcs; ++i) { |
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Xcb::RandR::CrtcInfo info(infos.at(i)); |
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const QRect geo = info.rect(); |
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if (geo.isValid()) { |
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m_geometries << geo; |
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} |
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} |
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if (m_geometries.isEmpty()) { |
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fallback(); |
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return; |
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} |
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setCount(m_geometries.count()); |
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} |
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void XRandRScreens::init() |
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{ |
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KWin::Screens::init(); |
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// we need to call ScreenResources at least once to be able to use current |
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update<Xcb::RandR::ScreenResources>(); |
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emit changed(); |
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} |
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QRect XRandRScreens::geometry(int screen) const |
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{ |
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if (screen >= m_geometries.size() || screen < 0) { |
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return QRect(); |
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} |
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return m_geometries.at(screen); |
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} |
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int XRandRScreens::number(const QPoint &pos) const |
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{ |
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int bestScreen = 0; |
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int minDistance = INT_MAX; |
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for (int i = 0; i < m_geometries.size(); ++i) { |
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const QRect &geo = m_geometries.at(i); |
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if (geo.contains(pos)) { |
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return i; |
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} |
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int distance = QPoint(geo.topLeft() - pos).manhattanLength(); |
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distance = qMin(distance, QPoint(geo.topRight() - pos).manhattanLength()); |
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distance = qMin(distance, QPoint(geo.bottomRight() - pos).manhattanLength()); |
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distance = qMin(distance, QPoint(geo.bottomLeft() - pos).manhattanLength()); |
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if (distance < minDistance) { |
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minDistance = distance; |
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bestScreen = i; |
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} |
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} |
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return bestScreen; |
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} |
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QSize XRandRScreens::size(int screen) const |
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{ |
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const QRect geo = geometry(screen); |
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if (!geo.isValid()) { |
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return QSize(); |
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} |
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return geo.size(); |
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} |
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void XRandRScreens::updateCount() |
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{ |
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update<Xcb::RandR::CurrentResources>(); |
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} |
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bool XRandRScreens::event(xcb_generic_event_t *event) |
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{ |
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Q_ASSERT((event->response_type & ~0x80) == Xcb::Extensions::self()->randrNotifyEvent()); |
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// let's try to gather a few XRandR events, unlikely that there is just one |
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startChangedTimer(); |
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return false; |
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} |
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} // namespace
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