SDL_power.c File Reference

#include "../SDL_internal.h"
#include "SDL_power.h"
#include "SDL_syspower.h"

Include dependency graph for SDL_power.c:

Go to the source code of this file.

Typedefs
typedef SDL_bool(*	SDL_GetPowerInfo_Impl )(SDL_PowerState *state, int *seconds, int *percent)

Functions
SDL_PowerState	SDL_GetPowerInfo (int *seconds, int *percent)
	Get the current power supply details.

Variables
static SDL_GetPowerInfo_Impl	implementations []

Typedef Documentation

typedef SDL_bool(* SDL_GetPowerInfo_Impl)(SDL_PowerState *state, int *seconds, int *percent)

Definition at line 30 of file SDL_power.c.

Function Documentation

SDL_PowerState SDL_GetPowerInfo	(	int *	secs,
		int *	pct
	)

Get the current power supply details.

Parameters

secs	Seconds of battery life left. You can pass a NULL here if you don't care. Will return -1 if we can't determine a value, or we're not running on a battery.
pct	Percentage of battery life left, between 0 and 100. You can pass a NULL here if you don't care. Will return -1 if we can't determine a value, or we're not running on a battery.

Returns

The state of the battery (if any).

Definition at line 85 of file SDL_power.c.

References i, implementations, NULL, retval, and SDL_POWERSTATE_UNKNOWN.

{
#ifndef SDL_POWER_DISABLED
    const int total = sizeof(implementations) / sizeof(implementations[0]);
    SDL_PowerState retval = SDL_POWERSTATE_UNKNOWN;
    int i;
#endif

    int _seconds, _percent;
    /* Make these never NULL for platform-specific implementations. */
    if (seconds == NULL) {
        seconds = &_seconds;
    }
    if (percent == NULL) {
        percent = &_percent;
    }

#ifndef SDL_POWER_DISABLED
    for (i = 0; i < total; i++) {
        if (implementations[i](&retval, seconds, percent)) {
            return retval;
        }
    }
#endif

    /* nothing was definitive. */
    *seconds = -1;
    *percent = -1;
    return SDL_POWERSTATE_UNKNOWN;
}

Variable Documentation

SDL_GetPowerInfo_Impl implementations[]

static

Definition at line 46 of file SDL_power.c.

Referenced by SDL_GetPowerInfo().