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comparison src/power/windows/SDL_syspower.c @ 3186:51750b7a966f

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author Sam Lantinga <slouken@libsdl.org>
date Wed, 10 Jun 2009 13:34:20 +0000
parents b7a48f533966
children f7b03b6838cb
comparison
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3185:44d5474c2c8a 3186:51750b7a966f
28 #include <windows.h> 28 #include <windows.h>
29 29
30 #include "SDL_power.h" 30 #include "SDL_power.h"
31 31
32 SDL_bool 32 SDL_bool
33 SDL_GetPowerInfo_Windows(SDL_PowerState *state, int *seconds, int *percent) 33 SDL_GetPowerInfo_Windows(SDL_PowerState * state, int *seconds, int *percent)
34 { 34 {
35 SYSTEM_POWER_STATUS status; 35 SYSTEM_POWER_STATUS status;
36 SDL_bool need_details = SDL_FALSE; 36 SDL_bool need_details = SDL_FALSE;
37 37
38 /* This API should exist back to Win95 and Windows CE. */ 38 /* This API should exist back to Win95 and Windows CE. */
39 if (!GetSystemPowerStatus(&status)) { 39 if (!GetSystemPowerStatus(&status)) {
40 /* !!! FIXME: push GetLastError() into SDL_GetError() */ 40 /* !!! FIXME: push GetLastError() into SDL_GetError() */
41 *state = SDL_POWERSTATE_UNKNOWN; 41 *state = SDL_POWERSTATE_UNKNOWN;
42 } else if (status.BatteryFlag == 0xFF) { /* unknown state */ 42 } else if (status.BatteryFlag == 0xFF) { /* unknown state */
43 *state = SDL_POWERSTATE_UNKNOWN; 43 *state = SDL_POWERSTATE_UNKNOWN;
44 } else if (status.BatteryFlag & (1 << 7)) { /* no battery */ 44 } else if (status.BatteryFlag & (1 << 7)) { /* no battery */
45 *state = SDL_POWERSTATE_NO_BATTERY; 45 *state = SDL_POWERSTATE_NO_BATTERY;
46 } else if (status.BatteryFlag & (1 << 3)) { /* charging */ 46 } else if (status.BatteryFlag & (1 << 3)) { /* charging */
47 *state = SDL_POWERSTATE_CHARGING; 47 *state = SDL_POWERSTATE_CHARGING;
48 need_details = SDL_TRUE; 48 need_details = SDL_TRUE;
49 } else if (status.ACLineStatus == 1) { 49 } else if (status.ACLineStatus == 1) {
50 *state = SDL_POWERSTATE_CHARGED; /* on AC, not charging. */ 50 *state = SDL_POWERSTATE_CHARGED; /* on AC, not charging. */
51 need_details = SDL_TRUE; 51 need_details = SDL_TRUE;
52 } else { 52 } else {
53 *state = SDL_POWERSTATE_ON_BATTERY; /* not on AC. */ 53 *state = SDL_POWERSTATE_ON_BATTERY; /* not on AC. */
54 need_details = SDL_TRUE; 54 need_details = SDL_TRUE;
55 } 55 }
56 56
57 *percent = -1; 57 *percent = -1;
58 *seconds = -1; 58 *seconds = -1;
59 if (need_details) { 59 if (need_details) {
60 const int pct = (int) status.BatteryLifePercent; 60 const int pct = (int) status.BatteryLifePercent;
61 const int secs = (int) status.BatteryLifeTime; 61 const int secs = (int) status.BatteryLifeTime;
62 62
63 if (pct != 255) { /* 255 == unknown */ 63 if (pct != 255) { /* 255 == unknown */
64 *percent = (pct > 100) ? 100 : pct; /* clamp between 0%, 100% */ 64 *percent = (pct > 100) ? 100 : pct; /* clamp between 0%, 100% */
65 } 65 }
66 if (secs != 0xFFFFFFFF) { /* ((DWORD)-1) == unknown */ 66 if (secs != 0xFFFFFFFF) { /* ((DWORD)-1) == unknown */
67 *seconds = secs; 67 *seconds = secs;
68 } 68 }
69 } 69 }
70 70
71 return SDL_TRUE; /* always the definitive answer on Windows. */ 71 return SDL_TRUE; /* always the definitive answer on Windows. */
72 } 72 }
73 73
74 #endif /* SDL_POWER_WINDOWS */ 74 #endif /* SDL_POWER_WINDOWS */
75 #endif /* SDL_POWER_DISABLED */ 75 #endif /* SDL_POWER_DISABLED */
76 76
77 /* vi: set ts=4 sw=4 expandtab: */ 77 /* vi: set ts=4 sw=4 expandtab: */
78