Atlas - SDL_syspower.c
Home / ext / SDL / src / power / windows
Lines: 1 | Size: 2534 bytes
[Download] [Show on GitHub] [Search similar files] [Raw] [Raw (proxy)] 
[FILE BEGIN]
1/*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2025 Sam Lantinga <[email protected]>
4
5  This software is provided 'as-is', without any express or implied
6  warranty.  In no event will the authors be held liable for any damages
7  arising from the use of this software.
8
9  Permission is granted to anyone to use this software for any purpose,
10  including commercial applications, and to alter it and redistribute it
11  freely, subject to the following restrictions:
12
13  1. The origin of this software must not be misrepresented; you must not
14     claim that you wrote the original software. If you use this software
15     in a product, an acknowledgment in the product documentation would be
16     appreciated but is not required.
17  2. Altered source versions must be plainly marked as such, and must not be
18     misrepresented as being the original software.
19  3. This notice may not be removed or altered from any source distribution.
20*/
21#include "SDL_internal.h"
22
23#ifndef SDL_POWER_DISABLED
24#ifdef SDL_POWER_WINDOWS
25
26#include "../../core/windows/SDL_windows.h"
27
28bool SDL_GetPowerInfo_Windows(SDL_PowerState *state, int *seconds, int *percent)
29{
30    SYSTEM_POWER_STATUS status;
31    bool need_details = false;
32
33    // This API should exist back to Win95.
34    if (!GetSystemPowerStatus(&status)) {
35        // !!! FIXME: push GetLastError() into SDL_GetError()
36        *state = SDL_POWERSTATE_UNKNOWN;
37    } else if (status.BatteryFlag == 0xFF) { // unknown state
38        *state = SDL_POWERSTATE_UNKNOWN;
39    } else if (status.BatteryFlag & (1 << 7)) { // no battery
40        *state = SDL_POWERSTATE_NO_BATTERY;
41    } else if (status.BatteryFlag & (1 << 3)) { // charging
42        *state = SDL_POWERSTATE_CHARGING;
43        need_details = true;
44    } else if (status.ACLineStatus == 1) {
45        *state = SDL_POWERSTATE_CHARGED; // on AC, not charging.
46        need_details = true;
47    } else {
48        *state = SDL_POWERSTATE_ON_BATTERY; // not on AC.
49        need_details = true;
50    }
51
52    *percent = -1;
53    *seconds = -1;
54    if (need_details) {
55        const int pct = (int)status.BatteryLifePercent;
56        const int secs = (int)status.BatteryLifeTime;
57
58        if (pct != 255) {                       // 255 == unknown
59            *percent = (pct > 100) ? 100 : pct; // clamp between 0%, 100%
60        }
61        if (secs != 0xFFFFFFFF) { // ((DWORD)-1) == unknown
62            *seconds = secs;
63        }
64    }
65
66    return true; // always the definitive answer on Windows.
67}
68
69#endif // SDL_POWER_WINDOWS
70#endif // SDL_POWER_DISABLED
71
[FILE END]
(C) 2025 0x4248
(C) 2025 4248 Media and 4248 Systems, All part of 0x4248
See LICENCE files for more information. Not all files are by 0x4248 always check Licencing.