82d2860469
With Wayland KWin needs to provide certain services, which were provided before that by the Xserver. One of these is gamma correction, which includes the - by many people beloved - functionality to reduce the blue light at nighttime. This patch provides the KWin part of that. It is self contained, but in the end will work in tandem with a lib in Plasma Workspace and a KCM in Plasma Desktop, which can be used to configure Night Color. * Three modi: ** Automatic: The location and sun timings are determined automatically (location data updates will be provided by the workspace) ** Location: The sun timings are determined by fixed location data ** Timings: The sun timings are set manually by the user * Color temperature value changes are smoothly applied: ** Configuration changes, which lead to other current values are changed in a quick way over a few seconds ** Changes on sunrise and sunset are applied slowly over the course of few minutes till several hours depending on the configuration * The current color value is set immediately at startup or after suspend phases and VT switches. There is no flickering. * All configuration is done via a DBus interface, changed values are tested on correctness and applied atomically * Self contained mechanism, speaks directly to the hardware by setting the gamma ramps on the CRTC * Currently working on DRM backend, extensible to other platform backends in the future * The code is written in a way to make the classes later easily extendable to also provide normal color correction, as it's currently done by KGamma on X Test Plan: Manually with the workspace parts and added integration tests in KWin using the virtual backend. BUG:371494 Reviewers: #kwin, graesslin Subscribers: kwin, plasma-devel, #kwin Tags: #kwin Differential Revision: https://phabricator.kde.org/D5928
112 lines
2.9 KiB
C++
112 lines
2.9 KiB
C++
/********************************************************************
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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) 2015 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 "virtual_backend.h"
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#include "scene_qpainter_virtual_backend.h"
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#include "screens_virtual.h"
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#include "wayland_server.h"
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#include "egl_gbm_backend.h"
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// Qt
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#include <QTemporaryDir>
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// KWayland
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#include <KWayland/Server/seat_interface.h>
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// system
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#include <fcntl.h>
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#include <unistd.h>
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#include <config-kwin.h>
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#if HAVE_GBM
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#include <gbm.h>
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#endif
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#include <colorcorrection/manager.h>
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namespace KWin
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{
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VirtualBackend::VirtualBackend(QObject *parent)
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: Platform(parent)
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{
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if (qEnvironmentVariableIsSet("KWIN_WAYLAND_VIRTUAL_SCREENSHOTS")) {
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m_screenshotDir.reset(new QTemporaryDir);
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if (!m_screenshotDir->isValid()) {
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m_screenshotDir.reset();
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}
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if (!m_screenshotDir.isNull()) {
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qDebug() << "Screenshots saved to: " << m_screenshotDir->path();
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}
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}
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setSupportsPointerWarping(true);
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setSupportsGammaControl(true);
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}
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VirtualBackend::~VirtualBackend()
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{
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#if HAVE_GBM
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if (m_gbmDevice) {
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gbm_device_destroy(m_gbmDevice);
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}
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#endif
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if (m_drmFd != -1) {
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close(m_drmFd);
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}
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}
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void VirtualBackend::init()
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{
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setSoftWareCursor(true);
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m_size = initialWindowSize();
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setReady(true);
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waylandServer()->seat()->setHasPointer(true);
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waylandServer()->seat()->setHasKeyboard(true);
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waylandServer()->seat()->setHasTouch(true);
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emit screensQueried();
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}
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QString VirtualBackend::screenshotDirPath() const
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{
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if (m_screenshotDir.isNull()) {
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return QString();
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}
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return m_screenshotDir->path();
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}
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Screens *VirtualBackend::createScreens(QObject *parent)
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{
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return new VirtualScreens(this, parent);
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}
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QPainterBackend *VirtualBackend::createQPainterBackend()
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{
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return new VirtualQPainterBackend(this);
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}
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OpenGLBackend *VirtualBackend::createOpenGLBackend()
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{
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return new EglGbmBackend(this);
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}
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int VirtualBackend::gammaRampSize(int screen) const {
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return m_gammaSizes[screen];
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}
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bool VirtualBackend::setGammaRamp(int screen, ColorCorrect::GammaRamp &gamma) {
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Q_UNUSED(gamma);
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return m_gammaResults[screen];
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}
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}
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