Screen daemon

CMakeLists.txt

@@ -65,6 +65,8 @@ if (WITH_APPEARANCE)
 endif()
 if (WITH_MONITOR)
     add_subdirectory(lxqt-config-monitor)
+    add_subdirectory(lxqt-monitor)
+    add_subdirectory(autostart)
 endif()
 if (WITH_BRIGHTNESS)
     add_subdirectory(lxqt-config-brightness)

autostart/CMakeLists.txt

@@ -0,0 +1,15 @@
+file(GLOB DESKTOP_FILES_IN *.desktop.in)
+
+# Translations **********************************
+lxqt_translate_desktop(DESKTOP_FILES
+    SOURCES
+        ${DESKTOP_FILES_IN}
+)
+add_custom_target(lxqt_monitor_autostart_desktop_files ALL DEPENDS ${DESKTOP_FILES})
+#************************************************
+
+install(FILES
+    ${DESKTOP_FILES}
+    DESTINATION "${LXQT_ETC_XDG_DIR}/autostart"
+    COMPONENT Runtime
+)

autostart/lxqt-monitor.desktop.in

@@ -0,0 +1,11 @@
+[Desktop Entry]
+Type=Application
+Version=1.0
+Name=Monitor Settings
+TryExec=lxqt-monitor
+Exec=lxqt-monitor
+OnlyShowIn=LXQt;
+X-LXQt-Need-Tray=false
+X-LXQt-Module=true
+
+#TRANSLATIONS_DIR=translations

autostart/translations/lxqt-monitor_es.desktop

@@ -0,0 +1 @@
+Name[es]=Gestión de pantallas

lxqt-monitor/CMakeLists.txt

@@ -0,0 +1,65 @@
+project(lxqt-monitor)
+
+find_package(UDev REQUIRED)
+include_directories(${LIBUDEV_INCLUDE_DIR})
+add_definitions(-DWITH_LIBUDEV_MONITOR)
+
+set(HEADERS
+    Daemon.h
+    UdevNotifier.h
+)
+
+set(SOURCES
+    main.cpp
+    Daemon.cpp
+    UdevNotifier.cpp
+)
+
+set(UIS
+
+)
+
+#set(ICONS
+#)
+
+# Config file
+#configure_file(resources/configure.in configure.h)
+
+# Translations **********************************
+#lxqt_translate_ts(QM_FILES
+#    UPDATE_TRANSLATIONS
+#        ${UPDATE_TRANSLATIONS}
+#    SOURCES
+#        ${HEADERS}
+#        ${SOURCES}
+#        ${UIS}
+#    INSTALL_DIR
+#        "${LXQT_TRANSLATIONS_DIR}/${PROJECT_NAME}"
+#)
+#
+#lxqt_app_translation_loader(QM_LOADER ${PROJECT_NAME})
+#lxqt_translate_desktop(DESKTOP_FILES SOURCES "resources/${PROJECT_NAME}.desktop.in")
+
+#************************************************
+
+add_executable(${PROJECT_NAME}
+    ${SOURCES}
+    ${RESOURCES}
+    ${QRC_SOURCES}
+    ${DESKTOP_FILES}
+    ${QM_FILES}
+    ${QM_LOADER}
+)
+
+target_link_libraries(${PROJECT_NAME}
+    Qt5::Widgets
+    KF5::WindowSystem
+    Qt5::DBus
+    ${UDEV_LIBS}
+    lxqt
+)
+
+install(TARGETS ${PROJECT_NAME} RUNTIME DESTINATION ${CMAKE_INSTALL_FULL_BINDIR})
+install(FILES ${DESKTOP_FILES} DESTINATION "${CMAKE_INSTALL_FULL_DATADIR}/applications")
+#install(FILES ${ICONS} DESTINATION "${CMAKE_INSTALL_FULL_DATADIR}/lxqt/icons")
+

lxqt-monitor/Daemon.cpp

@@ -0,0 +1,40 @@
+/* BEGIN_COMMON_COPYRIGHT_HEADER
+ * (c)LGPL2+
+ *
+ * LXQt - a lightweight, Qt based, desktop toolset
+ *
+ * Copyright: 2020 LXQt team
+ * Authors:
+ *   Pedro L. Lucas <[email protected]>
+ *
+ * This program or library is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA
+ *
+ * END_COMMON_COPYRIGHT_HEADER */
+
+#include "Daemon.h"
+#include <QProcess>
+#include <QDebug>
+
+Daemon::Daemon(QObject *parent) : QObject(parent)
+{
+    m_dev_notifier_drm_subsystem = new UdevNotifier(QStringLiteral("drm"), this); //will be released upon our destruction
+    connect(m_dev_notifier_drm_subsystem, &UdevNotifier::deviceChanged, [this] (QString device)
+        {
+            Q_UNUSED(device)
+            qWarning() << QStringLiteral("Display device '%1'").arg(device);
+            QProcess::startDetached(QStringLiteral("lxqt-config-monitor -l"));
+        });
+}

lxqt-monitor/Daemon.h

@@ -0,0 +1,43 @@
+/* BEGIN_COMMON_COPYRIGHT_HEADER
+ * (c)LGPL2+
+ *
+ * LXQt - a lightweight, Qt based, desktop toolset
+ *
+ * Copyright: 2020 LXQt team
+ * Authors:
+ *   Pedro L. Lucas <[email protected]>
+ *
+ * This program or library is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA
+ *
+ * END_COMMON_COPYRIGHT_HEADER */
+
+#ifndef __DAEMON_H__
+#define __DAEMON_H__
+
+#include "UdevNotifier.h"
+
+class Daemon : public QObject
+{
+    Q_OBJECT
+
+public:
+    Daemon(QObject *parent = nullptr);
+
+private:
+    UdevNotifier *m_dev_notifier_drm_subsystem;
+};
+
+#endif

lxqt-monitor/UdevNotifier.cpp

@@ -0,0 +1,101 @@
+/* BEGIN_COMMON_COPYRIGHT_HEADER
+ * (c)LGPL2+
+ *
+ * LXQt - a lightweight, Qt based, desktop toolset
+ * https://lxqt.org
+ *
+ * Copyright: 2015 LXQt team
+ * Authors:
+ *  Palo Kisa <[email protected]>
+ *
+ * This program or library is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA
+ *
+ * END_COMMON_COPYRIGHT_HEADER */
+
+#include "UdevNotifier.h"
+#include <libudev.h>
+#include <QByteArray>
+#include <QSocketNotifier>
+#include <QtDebug>
+
+class UdevNotifier::Impl
+{
+public:
+    struct udev * udev;
+    struct udev_monitor * monitor;
+    QScopedPointer<QSocketNotifier> notifier;
+};
+
+
+UdevNotifier::UdevNotifier(QString const & subsystem, QObject * parent/* = nullptr*/)
+    : QObject(parent)
+    , d(new Impl)
+{
+    d->udev = udev_new();
+    d->monitor = udev_monitor_new_from_netlink(d->udev, "udev");
+    if (nullptr == d->monitor)
+    {
+        qWarning() << QStringLiteral("UdevNotifier: unable to initialize udev_monitor, monitoring will be disabled");
+        return;
+    }
+
+    int ret = udev_monitor_filter_add_match_subsystem_devtype(d->monitor, subsystem.toLatin1().constData(), nullptr);
+    if (0 != ret)
+        qWarning() << QStringLiteral("UdevNotifier: unable to add match subsystem, monitor will receive all devices");
+
+    ret = udev_monitor_enable_receiving(d->monitor);
+    if (0 != ret)
+    {
+        qWarning() << QStringLiteral("UdevNotifier: unable to enable receiving(%1), monitoring will be disabled").arg(ret);
+        return;
+    }
+
+    d->notifier.reset(new QSocketNotifier(udev_monitor_get_fd(d->monitor), QSocketNotifier::Read));
+    connect(d->notifier.data(), &QSocketNotifier::activated, this, &UdevNotifier::eventReady);
+    d->notifier->setEnabled(true);
+}
+
+UdevNotifier::~UdevNotifier()
+{
+    if (d->monitor)
+        udev_monitor_unref(d->monitor);
+    udev_unref(d->udev);
+}
+
+void UdevNotifier::eventReady(int /*socket*/)
+{
+    struct udev_device * dev;
+    while (nullptr != (dev = udev_monitor_receive_device(d->monitor)))
+    {
+        const char *action = udev_device_get_action(dev);
+        QString const device = QString::fromUtf8(udev_device_get_devnode(dev));
+
+        if (action && !device.isEmpty()) {
+            if (qstrcmp(action, "add") == 0)
+                emit deviceAdded(std::move(device));
+            else if (qstrcmp(action, "remove") == 0)
+                emit deviceRemoved(std::move(device));
+            else if (qstrcmp(action, "change") == 0)
+                emit deviceChanged(std::move(device));
+            else if (qstrcmp(action, "online") == 0)
+                emit deviceOnline(std::move(device));
+            else if (qstrcmp(action, "offline") == 0)
+                emit deviceOffline(std::move(device));
+        }
+
+        udev_device_unref(dev);
+    }
+}

lxqt-monitor/UdevNotifier.h

@@ -0,0 +1,57 @@
+/* BEGIN_COMMON_COPYRIGHT_HEADER
+ * (c)LGPL2+
+ *
+ * LXQt - a lightweight, Qt based, desktop toolset
+ * https://lxqt.org
+ *
+ * Copyright: 2015 LXQt team
+ * Authors:
+ *  Palo Kisa <[email protected]>
+ *
+ * This program or library is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA
+ *
+ * END_COMMON_COPYRIGHT_HEADER */
+
+#ifndef UdevNotifier_h
+#define UdevNotifier_h
+
+#include <QObject>
+#include <QScopedPointer>
+
+class UdevNotifier : public QObject
+{
+    Q_OBJECT
+public:
+    UdevNotifier(QString const & subsystem, QObject * parent = nullptr);
+    ~UdevNotifier() override;
+
+signals:
+    void deviceAdded(QString path);
+    void deviceRemoved(QString path);
+    void deviceChanged(QString path);
+    void deviceOnline(QString path);
+    void deviceOffline(QString path);
+
+private slots:
+    void eventReady(int socket);
+
+private:
+    class Impl;
+
+    QScopedPointer<Impl> d;
+};
+
+#endif //UdevNotifier_h