Merge remote-tracking branch 'origin/master'

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diff --git a/src-qt5/core/libLumina/LuminaOS-Slackware.cpp b/src-qt5/core/libLumina/LuminaOS-Slackware.cpp
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+++ b/src-qt5/core/libLumina/LuminaOS-Slackware.cpp
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+//===========================================
+//  Lumina-DE source code
+//  Copyright (c) 2014, Ken Moore
+//  Available under the 3-clause BSD license
+//  See the LICENSE file for full details
+//===========================================
+#ifdef __linux__
+#include <QDebug>
+#include "LuminaOS.h"
+#include <unistd.h>
+#include <stdio.h> // Needed for BUFSIZ
+
+//can't read xbrightness settings - assume invalid until set
+static int screenbrightness = -1;
+
+QString LOS::OSName(){ return "Slackware Linux"; }
+
+//OS-specific prefix(s)
+// NOTE: PREFIX, L_ETCDIR, L_SHAREDIR are defined in the OS-detect.pri project file and passed in
+QString LOS::LuminaShare(){ return (L_SHAREDIR+"/lumina-desktop/"); } //Install dir for Lumina share files
+QString LOS::AppPrefix(){ return "/usr/"; } //Prefix for applications
+QString LOS::SysPrefix(){ return "/etc/"; } //Prefix for system
+
+//OS-specific application shortcuts (*.desktop files)
+QString LOS::ControlPanelShortcut(){ return ""; } //system control panel
+QString LOS::AppStoreShortcut(){ return ""; } //graphical app/pkg manager
+//OS-specific RSS feeds (Format: QStringList[ <name>::::<url> ]; )
+QStringList LOS::RSSFeeds(){ return QStringList(); } 
+
+// ==== ExternalDevicePaths() ====
+QStringList LOS::ExternalDevicePaths(){
+    //Returns: QStringList[<type>::::<filesystem>::::<path>]
+      //Note: <type> = [USB, HDRIVE, DVD, SDCARD, UNKNOWN]
+  QStringList devs = LUtils::getCmdOutput("mount");
+  //Now check the output
+  for(int i=0; i<devs.length(); i++){
+   if(devs[i].startsWith("/dev/")){
+      devs[i] = devs[i].simplified();
+      QString type = devs[i].section(" ",0,0);
+      type.remove("/dev/");
+      //Determine the type of hardware device based on the dev node
+      if(type.startsWith("sd") || type.startsWith("nvme")){ type = "HDRIVE"; }
+      else if(type.startsWith("sr")){ type="DVD"; }
+      else if(type.contains("mapper")){ type="LVM"; }
+      else{ type = "UNKNOWN"; }
+      //Now put the device in the proper output format
+      devs[i] = type+"::::"+devs[i].section(" ",4,4)+"::::"+devs[i].section(" ",2,2);
+    }else{
+    //invalid device - remove it from the list
+      devs.removeAt(i);
+      i--;
+    }
+  }
+  return devs;
+}
+
+//Read screen brightness information
+int LOS::ScreenBrightness(){
+   //Returns: Screen Brightness as a percentage (0-100, with -1 for errors)
+  if(screenbrightness==-1){
+    if(QFile::exists(QString(getenv("XDG_CONFIG_HOME"))+"/lumina-desktop/.currentxbrightness")){
+      int val = LUtils::readFile(QString(getenv("XDG_CONFIG_HOME"))+"/lumina-desktop/.currentxbrightness").join("").simplified().toInt();
+      screenbrightness = val;
+    }
+  }
+  return screenbrightness;
+
+}
+
+//Set screen brightness
+void LOS::setScreenBrightness(int percent){
+  //ensure bounds
+  if(percent<0){percent=0;}
+  else if(percent>100){ percent=100; }
+  // float pf = percent/100.0; //convert to a decimel
+  //Run the command
+  QString cmd = "xbacklight -set %1";
+  // cmd = cmd.arg( QString::number( int(65535*pf) ) );
+  cmd = cmd.arg( QString::number( percent ) );
+  int ret = LUtils::runCmd(cmd);
+  //Save the result for later
+  if(ret!=0){ screenbrightness = -1; }
+  else{ screenbrightness = percent; }
+  LUtils::writeFile(QString(getenv("XDG_CONFIG_HOME"))+"/lumina-desktop/.currentxbrightness", QStringList() << QString::number(screenbrightness), true);
+
+}
+
+//Read the current volume
+int LOS::audioVolume(){ //Returns: audio volume as a percentage (0-100, with -1 for errors)
+QString info = LUtils::getCmdOutput("amixer get Master").join("").simplified();;
+  int out = -1;
+  int start_position, end_position;
+  QString current_volume;
+  if(!info.isEmpty()){
+     start_position = info.indexOf("[");
+     start_position++;
+     end_position = info.indexOf("%");
+     current_volume = info.mid(start_position, end_position - start_position);
+     out = current_volume.toInt();
+  }
+  return out;
+
+
+}
+
+//Set the current volume
+void LOS::setAudioVolume(int percent){
+  if(percent<0){percent=0;}
+  else if(percent>100){percent=100;}
+  QString info = "amixer set Master " + QString::number(percent) + "%";
+  //Run Command
+  LUtils::runCmd(info);
+}
+
+//Change the current volume a set amount (+ or -)
+void LOS::changeAudioVolume(int percentdiff){
+  int old_volume = audioVolume();
+  int new_volume = old_volume + percentdiff;
+  if (new_volume < 0)
+      new_volume = 0;
+  if (new_volume > 100)
+      new_volume = 100;
+  qDebug() << "Setting new volume to: " << new_volume;
+  setAudioVolume(new_volume);
+}
+
+//Check if a graphical audio mixer is installed
+bool LOS::hasMixerUtility(){
+  return QFile::exists(LOS::AppPrefix() + "bin/pavucontrol");
+}
+
+//Launch the graphical audio mixer utility
+void LOS::startMixerUtility(){
+  QProcess::startDetached(LOS::AppPrefix() + "bin/pavucontrol");
+}
+
+//Check for user system permission (shutdown/restart)
+bool LOS::userHasShutdownAccess(){
+  return true; //not implemented yet
+}
+
+//Check for whether the system is safe to power off (no updates being perfomed)
+bool LOS::systemPerformingUpdates(){
+  return false; //Not implemented yet
+}
+
+//Return the details of any updates which are waiting to apply on shutdown
+QString LOS::systemPendingUpdates(){
+  return "";
+}
+
+//System Shutdown
+void LOS::systemShutdown(bool skipupdates){ //start poweroff sequence
+  QProcess::startDetached("dbus-send --system --print-reply=literal --dest=org.freedesktop.ConsoleKit /org/freedesktop/ConsoleKit/Manager org.freedesktop.ConsoleKit.Manager.Stop");
+}
+
+//System Restart
+void LOS::systemRestart(bool skipupdates){ //start reboot sequence
+  QProcess::startDetached("dbus-send --system --print-reply=literal --dest=org.freedesktop.ConsoleKit /org/freedesktop/ConsoleKit/Manager org.freedesktop.ConsoleKit.Manager.Restart");
+}
+
+//Check for suspend support
+bool LOS::systemCanSuspend(){
+  return false;
+}
+
+//Put the system into the suspend state
+void LOS::systemSuspend(){
+
+}
+
+//Battery Availability
+bool LOS::hasBattery(){
+  QString my_status = LUtils::getCmdOutput("acpi -b").join("");
+  bool no_battery = my_status.contains("No support");
+  if (no_battery) return false;
+  return true;
+}
+
+//Battery Charge Level
+int LOS::batteryCharge(){ //Returns: percent charge (0-100), anything outside that range is counted as an error
+  QString my_status = LUtils::getCmdOutput("acpi -b").join("");
+  int my_start = my_status.indexOf("%");
+  // get the number right before the % sign
+  int my_end = my_start;
+  my_start--;
+  while ( (my_status[my_start] != ' ') && (my_start > 0) )
+      my_start--;
+  my_start++;
+  int my_charge = my_status.mid(my_start, my_end - my_start).toInt();
+  if ( (my_charge < 0) || (my_charge > 100) ) return -1;
+  return my_charge;
+}
+
+//Battery Charging State
+// Many possible values are returned if the laptop is plugged in
+// these include "Unknown, Full and No support.
+// However, it seems just one status is returned when running
+// on battery and that is "Discharging". So if the value we get
+// is NOT Discharging then we assume the battery is charging.
+bool LOS::batteryIsCharging(){
+  QString my_status = LUtils::getCmdOutput("acpi -b").join("");
+  bool discharging = my_status.contains("Discharging");
+  if (discharging) return false;
+  return true;
+}
+
+//Battery Time Remaining
+int LOS::batterySecondsLeft(){ //Returns: estimated number of seconds remaining
+  return 0; //not implemented yet for Linux
+}
+
+//File Checksums
+QStringList LOS::Checksums(QStringList filepaths){ //Return: checksum of the input file
+  QStringList info = LUtils::getCmdOutput("md5sum \""+filepaths.join("\" \"")+"\"");
+  for(int i=0; i<info.length(); i++){
+    // first: md5sum: = error ; second: there's always one empty entry generated by getCmdOutput
+    if( info[i].startsWith("md5sum:") || info[i].isEmpty()){ info.removeAt(i); i--; }
+    else{
+      //Strip out the extra information
+      info[i] = info[i].section(" ",0,0);
+    }
+  }
+ return info;
+}
+
+//file system capacity
+QString LOS::FileSystemCapacity(QString dir) { //Return: percentage capacity as give by the df command
+  QStringList mountInfo = LUtils::getCmdOutput("df \"" + dir+"\"");
+  QString::SectionFlag skipEmpty = QString::SectionSkipEmpty;
+  //we take the 5th word on the 2 line
+  QString capacity = mountInfo[1].section(" ",4,4, skipEmpty) + " used";
+  return capacity;
+}
+
+QStringList LOS::CPUTemperatures(){ //Returns: List containing the temperature of any CPU's ("50C" for example)
+  return QStringList(); //not implemented yet
+}
+
+int LOS::CPUUsagePercent(){ //Returns: Overall percentage of the amount of CPU cycles in use (-1 for errors)
+  return -1; //not implemented yet
+}
+
+int LOS::MemoryUsagePercent(){
+  return -1; //not implemented yet
+}
+
+QStringList LOS::DiskUsage(){ //Returns: List of current read/write stats for each device
+  return QStringList(); //not implemented yet
+}
+
+#endif