1c4c5caf65
Like in the drm backend we use an InputEventFilter to turn the backlight on and off. In this case the filter needs to be always installed as key event should also turn the screen off. We cannot use a global shortcut as it would not trigger while the screen is locked. Unlike the filter in DRM backend only the power key can toggle the backlight, other key events are ignored. For pointer we are optimistic and already support enabling the backlight. Double tap to wake is also implemented, but at least on reference hardware (Nexus 5) doesn't work as disabling the backlight also disables touch input. Reviewed-By: Bhushan Shah
142 lines
3.9 KiB
C++
142 lines
3.9 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 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 "abstract_backend.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 AbstractBackend
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{
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Q_OBJECT
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Q_INTERFACES(KWin::AbstractBackend)
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Q_PLUGIN_METADATA(IID "org.kde.kwin.AbstractBackend" 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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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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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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