File: Battery.cpp

package info (click to toggle)
spring 104.0%2Bdfsg-3
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 47,512 kB
  • sloc: cpp: 391,093; ansic: 79,943; python: 12,356; java: 12,201; awk: 5,889; sh: 1,826; xml: 655; makefile: 486; perl: 405; php: 211; objc: 194; sed: 2
file content (59 lines) | stat: -rw-r--r-- 1,181 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
/* 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;
	}
}