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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include "Battery.h"
#include "System/EventHandler.h"
#include "System/Threading/ThreadPool.h"
#include "System/Config/ConfigHandler.h"
#include <SDL2/SDL_power.h>
CBattery* battery = nullptr;
CBattery::CBattery()
: CEventClient("[CBattery]", 314160, false)
, onBattery(false)
{
if (HasBattery()) {
eventHandler.AddClient(this);
}
}
CBattery::~CBattery()
{
eventHandler.RemoveClient(this);
}
void CBattery::Update()
{
const spring_time now = spring_gettime();
if (next_check > now)
return;
next_check = now + spring_secs(5);
// SDL_GetPowerInfo() seems to cause a lag of (milli-)secs
// run it threaded, so that it doesn't block the mainthread
ThreadPool::Enqueue([&]{
int secs, pct;
onBattery = (SDL_GetPowerInfo(&secs, &pct) == SDL_POWERSTATE_ON_BATTERY);
});
}
bool CBattery::HasBattery()
{
int secs, pct;
switch (SDL_GetPowerInfo(&secs, &pct)) {
case SDL_POWERSTATE_ON_BATTERY:
case SDL_POWERSTATE_CHARGING:
case SDL_POWERSTATE_CHARGED:
return true;
//case SDL_POWERSTATE_UNKNOWN:
//case SDL_POWERSTATE_NO_BATTERY:
default:
return false;
}
}
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