#include "screenmanager.h"

#include <stdlib.h>

//public
ScreenManager::ScreenManager()
   : screenOnTime(06,00), screenOffTime(22,00)
{
    QTime now = QTime::currentTime();
    screenEnabled = (now >=screenOnTime && now < screenOffTime);

    if (screenEnabled) { //force screen enabled, on upstart
        enableScreen();
    }
}


void ScreenManager::timerTick()
{
    QTime now = QTime::currentTime();
    if (screenEnabled) {
        if (now >= screenOffTime) {
            disableScreen();
        }
    } else { //screenEnabled == false
        if (now >= screenOnTime && now < screenOffTime) {
            enableScreen();
        }
    }
}


//private
void ScreenManager::disableScreen()
{
    int res;
    screenEnabled = false;
    res = system("xset dpms force off");
    qDebug("disableScreen");
}


void ScreenManager::enableScreen()
{
    int res;
    screenEnabled = true;
    res = system("xset dpms force on");
    res = system("xset -dpms"); //disable energy star auto turn -off

    res = system("xset s reset");//disable screensaver
    res = system("xset s off");

    qDebug("enableScreen");
}