c04e764369
Summary: Now powerdevil can adjust brightness using leds subsystem, however, kwin as well sets brightness to 0 for turning off screen and 0xff when turning screen back on. This resets the brightness set by the powerdevil to 100%. As a solution now kwin listens to brightnessChanged dbus signal of brightnesscontrol and book-keeps the changed brightness, if screen is turned off it sets brightness to 0 and when turning screen on, it resets to old brightness. If powermanagement service doesn't appear on dbus by default it restores 100% brightness. Test Plan: Appearantly this still doesn't work as-it-is on phone, because powerdevil doesn't emit brightnessChanged dbus signal because of bug in the driver of backlight control, driver doesn't seem to trigger uevents for changes in backlight. But with hack in powerdevil to emit brightnessChanged when setting brightness, this works Reviewers: broulik, #plasma_on_wayland, graesslin Reviewed By: #plasma_on_wayland, graesslin Subscribers: plasma-devel, kwin Tags: #plasma_on_wayland, #kwin Differential Revision: https://phabricator.kde.org/D2468
146 lines
4 KiB
C++
146 lines
4 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 3 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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#ifndef KWIN_HWCOMPOSER_BACKEND_H
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#define KWIN_HWCOMPOSER_BACKEND_H
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#include "platform.h"
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#include "input.h"
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#include <QElapsedTimer>
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#include <QMutex>
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#include <QWaitCondition>
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// libhybris
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#include <hwcomposer_window.h>
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// needed as hwcomposer_window.h includes EGL which on non-arm includes Xlib
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#include <fixx11h.h>
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typedef struct hwc_display_contents_1 hwc_display_contents_1_t;
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typedef struct hwc_layer_1 hwc_layer_1_t;
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typedef struct hwc_composer_device_1 hwc_composer_device_1_t;
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struct light_device_t;
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class HWComposerNativeWindowBuffer;
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namespace KWin
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{
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class HwcomposerWindow;
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class BacklightInputEventFilter;
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class HwcomposerBackend : public Platform
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{
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Q_OBJECT
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Q_INTERFACES(KWin::Platform)
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Q_PLUGIN_METADATA(IID "org.kde.kwin.Platform" FILE "hwcomposer.json")
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public:
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explicit HwcomposerBackend(QObject *parent = nullptr);
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virtual ~HwcomposerBackend();
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void init() override;
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Screens *createScreens(QObject *parent = nullptr) override;
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OpenGLBackend *createOpenGLBackend() override;
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QSize screenSize() const override {
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return m_displaySize;
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}
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HwcomposerWindow *createSurface();
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QSize size() const {
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return m_displaySize;
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}
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hwc_composer_device_1_t *device() const {
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return m_device;
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}
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int refreshRate() const {
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return m_refreshRate;
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}
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void enableVSync(bool enable);
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void waitVSync();
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void wakeVSync();
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bool isBacklightOff() const {
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return m_outputBlank;
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}
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Q_SIGNALS:
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void outputBlankChanged();
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private Q_SLOTS:
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void toggleBlankOutput();
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void screenBrightnessChanged(int brightness) {
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m_oldScreenBrightness = brightness;
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}
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private:
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void initLights();
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void toggleScreenBrightness();
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QSize m_displaySize;
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hwc_composer_device_1_t *m_device = nullptr;
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light_device_t *m_lights = nullptr;
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bool m_outputBlank = true;
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int m_refreshRate = 60000;
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int m_vsyncInterval = 16;
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int m_oldScreenBrightness = 0xff;
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bool m_hasVsync = false;
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QMutex m_vsyncMutex;
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QWaitCondition m_vsyncWaitCondition;
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QScopedPointer<BacklightInputEventFilter> m_filter;
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};
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class HwcomposerWindow : public HWComposerNativeWindow
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{
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public:
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virtual ~HwcomposerWindow();
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void present(HWComposerNativeWindowBuffer *buffer);
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private:
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friend HwcomposerBackend;
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HwcomposerWindow(HwcomposerBackend *backend);
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HwcomposerBackend *m_backend;
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hwc_display_contents_1_t **m_list;
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};
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class BacklightInputEventFilter : public InputEventFilter
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{
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public:
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BacklightInputEventFilter(HwcomposerBackend *backend);
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virtual ~BacklightInputEventFilter();
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bool pointerEvent(QMouseEvent *event, quint32 nativeButton) override;
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bool wheelEvent(QWheelEvent *event) override;
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bool keyEvent(QKeyEvent *event) override;
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bool touchDown(quint32 id, const QPointF &pos, quint32 time) override;
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bool touchMotion(quint32 id, const QPointF &pos, quint32 time) override;
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bool touchUp(quint32 id, quint32 time) override;
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private:
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void toggleBacklight();
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HwcomposerBackend *m_backend;
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QElapsedTimer m_doubleTapTimer;
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QVector<qint32> m_touchPoints;
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bool m_secondTap = false;
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};
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}
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#endif
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