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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;
//OS-specific prefix(s)
QString LOS::AppPrefix(){ return "/usr/"; } //Prefix for applications
QString LOS::SysPrefix(){ return "/usr/"; } //Prefix for system
// ==== ExternalDevicePaths() ====
QStringList LOS::ExternalDevicePaths(){
//Returns: QStringList[<type>::::<filesystem>::::<path>]
//Note: <type> = [USB, HDRIVE, DVD, SDCARD, UNKNOWN]
//Not implemented yet for Linux
return QStringList();
}
//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(QDir::homePath()+"/.lumina/.currentxbrightness")){
int val = LUtils::readFile(QDir::homePath()+"/.lumina/.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(QDir::homePath()+"/.lumina/.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 -c 0 sset Master,0 " + QString::number(percent) + "%";
if(!info.isEmpty()){
//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("/usr/bin/pavucontrol");
}
//Launch the graphical audio mixer utility
void LOS::startMixerUtility(){
QProcess::startDetached("/usr/bin/pavucontrol");
}
//System Shutdown
void LOS::systemShutdown(){ //start poweroff sequence
QProcess::startDetached("shutdown -h now");
}
//System Restart
void LOS::systemRestart(){ //start reboot sequence
QProcess::startDetached("shutdown -r now");
}
//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 batter yis 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
}
#endif
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