| /* |
| Simple DirectMedia Layer |
| Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org> |
| |
| This software is provided 'as-is', without any express or implied |
| warranty. In no event will the authors be held liable for any damages |
| arising from the use of this software. |
| |
| Permission is granted to anyone to use this software for any purpose, |
| including commercial applications, and to alter it and redistribute it |
| freely, subject to the following restrictions: |
| |
| 1. The origin of this software must not be misrepresented; you must not |
| claim that you wrote the original software. If you use this software |
| in a product, an acknowledgment in the product documentation would be |
| appreciated but is not required. |
| 2. Altered source versions must be plainly marked as such, and must not be |
| misrepresented as being the original software. |
| 3. This notice may not be removed or altered from any source distribution. |
| */ |
| #include "../../SDL_internal.h" |
| |
| #ifndef SDL_POWER_DISABLED |
| #if SDL_POWER_UIKIT |
| |
| #import <UIKit/UIKit.h> |
| |
| #include "SDL_power.h" |
| #include "SDL_timer.h" |
| #include "SDL_assert.h" |
| #include "SDL_syspower.h" |
| |
| #if !TARGET_OS_TV |
| /* turn off the battery monitor if it's been more than X ms since last check. */ |
| static const int BATTERY_MONITORING_TIMEOUT = 3000; |
| static Uint32 SDL_UIKitLastPowerInfoQuery = 0; |
| |
| void |
| SDL_UIKit_UpdateBatteryMonitoring(void) |
| { |
| if (SDL_UIKitLastPowerInfoQuery) { |
| if (SDL_TICKS_PASSED(SDL_GetTicks(), SDL_UIKitLastPowerInfoQuery + BATTERY_MONITORING_TIMEOUT)) { |
| UIDevice *uidev = [UIDevice currentDevice]; |
| SDL_assert([uidev isBatteryMonitoringEnabled] == YES); |
| [uidev setBatteryMonitoringEnabled:NO]; |
| SDL_UIKitLastPowerInfoQuery = 0; |
| } |
| } |
| } |
| #else |
| void |
| SDL_UIKit_UpdateBatteryMonitoring(void) |
| { |
| /* Do nothing. */ |
| } |
| #endif /* !TARGET_OS_TV */ |
| |
| SDL_bool |
| SDL_GetPowerInfo_UIKit(SDL_PowerState * state, int *seconds, int *percent) |
| { |
| #if TARGET_OS_TV |
| *state = SDL_POWERSTATE_NO_BATTERY; |
| *seconds = -1; |
| *percent = -1; |
| #else /* TARGET_OS_TV */ |
| @autoreleasepool { |
| UIDevice *uidev = [UIDevice currentDevice]; |
| |
| if (!SDL_UIKitLastPowerInfoQuery) { |
| SDL_assert(uidev.isBatteryMonitoringEnabled == NO); |
| uidev.batteryMonitoringEnabled = YES; |
| } |
| |
| /* UIKit_GL_SwapWindow() (etc) will check this and disable the battery |
| * monitoring if the app hasn't queried it in the last X seconds. |
| * Apparently monitoring the battery burns battery life. :) |
| * Apple's docs say not to monitor the battery unless you need it. |
| */ |
| SDL_UIKitLastPowerInfoQuery = SDL_GetTicks(); |
| |
| *seconds = -1; /* no API to estimate this in UIKit. */ |
| |
| switch (uidev.batteryState) { |
| case UIDeviceBatteryStateCharging: |
| *state = SDL_POWERSTATE_CHARGING; |
| break; |
| |
| case UIDeviceBatteryStateFull: |
| *state = SDL_POWERSTATE_CHARGED; |
| break; |
| |
| case UIDeviceBatteryStateUnplugged: |
| *state = SDL_POWERSTATE_ON_BATTERY; |
| break; |
| |
| case UIDeviceBatteryStateUnknown: |
| default: |
| *state = SDL_POWERSTATE_UNKNOWN; |
| break; |
| } |
| |
| const float level = uidev.batteryLevel; |
| *percent = ( (level < 0.0f) ? -1 : ((int) ((level * 100) + 0.5f)) ); |
| } |
| #endif /* TARGET_OS_TV */ |
| |
| return SDL_TRUE; /* always the definitive answer on iOS. */ |
| } |
| |
| #endif /* SDL_POWER_UIKIT */ |
| #endif /* SDL_POWER_DISABLED */ |
| |
| /* vi: set ts=4 sw=4 expandtab: */ |