mirror of
https://github.com/Relintai/pandemonium_engine_minimal.git
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106 lines
2.9 KiB
C++
106 lines
2.9 KiB
C++
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/* power_windows.cpp */
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/*
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Adapted from corresponding SDL 2.0 code.
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*/
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/*
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* Simple DirectMedia Layer
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* Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
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*
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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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*
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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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*
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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 "power_windows.h"
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// CODE CHUNK IMPORTED FROM SDL 2.0
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bool PowerWindows::GetPowerInfo_Windows() {
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SYSTEM_POWER_STATUS status;
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bool need_details = FALSE;
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/* This API should exist back to Win95. */
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if (!GetSystemPowerStatus(&status)) {
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/* !!! FIXME: push GetLastError() into GetError() */
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power_state = OS::POWERSTATE_UNKNOWN;
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} else if (status.BatteryFlag == 0xFF) { /* unknown state */
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power_state = OS::POWERSTATE_UNKNOWN;
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} else if (status.BatteryFlag & (1 << 7)) { /* no battery */
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power_state = OS::POWERSTATE_NO_BATTERY;
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} else if (status.BatteryFlag & (1 << 3)) { /* charging */
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power_state = OS::POWERSTATE_CHARGING;
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need_details = TRUE;
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} else if (status.ACLineStatus == 1) {
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power_state = OS::POWERSTATE_CHARGED; /* on AC, not charging. */
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need_details = TRUE;
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} else {
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power_state = OS::POWERSTATE_ON_BATTERY; /* not on AC. */
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need_details = TRUE;
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}
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percent_left = -1;
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nsecs_left = -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_left = (pct > 100) ? 100 : pct; /* clamp between 0%, 100% */
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}
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if (secs != (int)0xFFFFFFFF) { /* ((DWORD)-1) == unknown */
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nsecs_left = secs;
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}
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}
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return TRUE; /* always the definitive answer on Windows. */
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}
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OS::PowerState PowerWindows::get_power_state() {
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if (GetPowerInfo_Windows()) {
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return power_state;
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} else {
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return OS::POWERSTATE_UNKNOWN;
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}
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}
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int PowerWindows::get_power_seconds_left() {
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if (GetPowerInfo_Windows()) {
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return nsecs_left;
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} else {
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return -1;
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}
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}
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int PowerWindows::get_power_percent_left() {
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if (GetPowerInfo_Windows()) {
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return percent_left;
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} else {
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return -1;
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}
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}
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PowerWindows::PowerWindows() :
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nsecs_left(-1),
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percent_left(-1),
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power_state(OS::POWERSTATE_UNKNOWN) {
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}
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PowerWindows::~PowerWindows() {
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}
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