mirror of https://github.com/encounter/SDL.git
77 lines
2.6 KiB
C
77 lines
2.6 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2022 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "../../SDL_internal.h"
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#ifndef SDL_POWER_DISABLED
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#if SDL_POWER_WINDOWS
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#include "../../core/windows/SDL_windows.h"
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#include "SDL_power.h"
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SDL_bool
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SDL_GetPowerInfo_Windows(SDL_PowerState * state, int *seconds, int *percent)
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{
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SYSTEM_POWER_STATUS status;
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SDL_bool need_details = SDL_FALSE;
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/* This API should exist back to Win95. */
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if (!GetSystemPowerStatus(&status))
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{
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/* !!! FIXME: push GetLastError() into SDL_GetError() */
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*state = SDL_POWERSTATE_UNKNOWN;
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} else if (status.BatteryFlag == 0xFF) { /* unknown state */
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*state = SDL_POWERSTATE_UNKNOWN;
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} else if (status.BatteryFlag & (1 << 7)) { /* no battery */
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*state = SDL_POWERSTATE_NO_BATTERY;
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} else if (status.BatteryFlag & (1 << 3)) { /* charging */
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*state = SDL_POWERSTATE_CHARGING;
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need_details = SDL_TRUE;
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} else if (status.ACLineStatus == 1) {
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*state = SDL_POWERSTATE_CHARGED; /* on AC, not charging. */
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need_details = SDL_TRUE;
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} else {
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*state = SDL_POWERSTATE_ON_BATTERY; /* not on AC. */
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need_details = SDL_TRUE;
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}
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*percent = -1;
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*seconds = -1;
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if (need_details) {
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const int pct = (int) status.BatteryLifePercent;
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const int secs = (int) status.BatteryLifeTime;
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if (pct != 255) { /* 255 == unknown */
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*percent = (pct > 100) ? 100 : pct; /* clamp between 0%, 100% */
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}
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if (secs != 0xFFFFFFFF) { /* ((DWORD)-1) == unknown */
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*seconds = secs;
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}
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}
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return SDL_TRUE; /* always the definitive answer on Windows. */
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}
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#endif /* SDL_POWER_WINDOWS */
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#endif /* SDL_POWER_DISABLED */
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/* vi: set ts=4 sw=4 expandtab: */
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