SDL  2.0
testpower.c
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1 /*
2  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
3 
4  This software is provided 'as-is', without any express or implied
5  warranty. In no event will the authors be held liable for any damages
6  arising from the use of this software.
7 
8  Permission is granted to anyone to use this software for any purpose,
9  including commercial applications, and to alter it and redistribute it
10  freely.
11 */
12 /* Simple test of power subsystem. */
13 
14 #include <stdio.h>
15 #include "SDL.h"
16 
17 static void
18 report_power(void)
19 {
20  int seconds, percent;
21  const SDL_PowerState state = SDL_GetPowerInfo(&seconds, &percent);
22  char *statestr = NULL;
23 
24  SDL_Log("SDL-reported power info...\n");
25  switch (state) {
26  case SDL_POWERSTATE_UNKNOWN:
27  statestr = "Unknown";
28  break;
29  case SDL_POWERSTATE_ON_BATTERY:
30  statestr = "On battery";
31  break;
32  case SDL_POWERSTATE_NO_BATTERY:
33  statestr = "No battery";
34  break;
35  case SDL_POWERSTATE_CHARGING:
36  statestr = "Charging";
37  break;
38  case SDL_POWERSTATE_CHARGED:
39  statestr = "Charged";
40  break;
41  default:
42  statestr = "!!API ERROR!!";
43  break;
44  }
45 
46  SDL_Log("State: %s\n", statestr);
47 
48  if (percent == -1) {
49  SDL_Log("Percent left: unknown\n");
50  } else {
51  SDL_Log("Percent left: %d%%\n", percent);
52  }
53 
54  if (seconds == -1) {
55  SDL_Log("Time left: unknown\n");
56  } else {
57  SDL_Log("Time left: %d minutes, %d seconds\n", (int) (seconds / 60),
58  (int) (seconds % 60));
59  }
60 }
61 
62 
63 int
64 main(int argc, char *argv[])
65 {
66  /* Enable standard application logging */
67  SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
68 
69  if (SDL_Init(0) == -1) {
70  SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "SDL_Init() failed: %s\n", SDL_GetError());
71  return 1;
72  }
73 
74  report_power();
75 
76  SDL_Quit();
77  return 0;
78 }
79 
80 /* end of testpower.c ... */