Desktop
/* $Id: battery.c,v 1.18 2010/09/14 20:37:16 khorben Exp $ */
/* Copyright (c) 2010 Pierre Pronchery <khorben@defora.org> */
/* This file is part of DeforaOS Desktop Panel */
/* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <sys/time.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <errno.h>
#if defined(__NetBSD__)
# include <sys/types.h>
# include <sys/ioctl.h>
# include <sys/envsys.h>
# include <fcntl.h>
# include <unistd.h>
# include <paths.h>
#elif defined(__linux__)
# include <fcntl.h>
# include <unistd.h>
# include <stdio.h>
#endif
#include <libintl.h>
#include <System.h>
#include "Panel.h"
#define _(string) gettext(string)
/* Battery */
/* private */
/* types */
typedef enum _BatteryLevel
{
BATTERY_LEVEL_UNKNOWN = 0,
BATTERY_LEVEL_ERROR,
BATTERY_LEVEL_CAUTION,
BATTERY_LEVEL_LOW,
BATTERY_LEVEL_NORMAL,
BATTERY_LEVEL_CHARGING
} BatteryLevel;
#define BATTERY_LEVEL_LAST BATTERY_LEVEL_CHARGING
#define BATTERY_LEVEL_COUNT (BATTERY_LEVEL_LAST + 1)
typedef struct _Battery
{
PanelAppletHelper * helper;
BatteryLevel level;
/* widgets */
GtkWidget * hbox;
GtkWidget * charging;
GtkWidget * image;
GtkWidget * label;
guint timeout;
/* platform-specific */
#if defined(__NetBSD__) || defined(__linux__)
int fd;
#endif
} Battery;
/* prototypes */
static GtkWidget * _battery_init(PanelApplet * applet);
static void _battery_destroy(PanelApplet * applet);
static gdouble _battery_get(Battery * battery, gboolean * charging);
static void _battery_set(Battery * battery, gdouble value, gboolean charging);
/* callbacks */
static gboolean _on_timeout(gpointer data);
/* public */
/* variables */
PanelApplet applet =
{
NULL,
"Battery",
NULL,
_battery_init,
_battery_destroy,
NULL,
PANEL_APPLET_POSITION_END,
FALSE,
TRUE,
NULL
};
/* private */
/* functions */
/* battery_init */
static GtkWidget * _battery_init(PanelApplet * applet)
{
GtkWidget * hbox;
Battery * battery;
if((battery = malloc(sizeof(*battery))) == NULL)
return NULL;
applet->priv = battery;
battery->helper = applet->helper;
battery->level = -1;
battery->timeout = 0;
#if defined(__NetBSD__) || defined(__linux__)
battery->fd = -1;
#endif
hbox = gtk_hbox_new(FALSE, 4);
battery->hbox = hbox;
battery->charging = gtk_image_new_from_icon_name("stock_connect",
GTK_ICON_SIZE_MENU);
gtk_box_pack_start(GTK_BOX(hbox), battery->charging, FALSE, TRUE, 0);
battery->image = gtk_image_new_from_icon_name("battery",
applet->helper->icon_size);
gtk_box_pack_start(GTK_BOX(hbox), battery->image, FALSE, TRUE, 0);
#ifndef EMBEDDED
battery->label = gtk_label_new(" ");
gtk_box_pack_start(GTK_BOX(hbox), battery->label, FALSE, TRUE, 0);
gtk_widget_show(battery->label);
#endif
battery->timeout = g_timeout_add(5000, _on_timeout, battery);
_on_timeout(battery);
gtk_widget_show(battery->image);
return hbox;
}
/* battery_destroy */
static void _battery_destroy(PanelApplet * applet)
{
Battery * battery = applet->priv;
if(battery->timeout > 0)
g_source_remove(battery->timeout);
#if defined(__NetBSD__) || defined(__linux__)
if(battery->fd != -1)
close(battery->fd);
#endif
free(battery);
}
/* battery_set */
static void _set_image(Battery * battery, BatteryLevel level);
static void _battery_set(Battery * battery, gdouble value, gboolean charging)
{
char buf[16];
snprintf(buf, sizeof(buf), "%.0lf%% ", value);
/* XXX only show when necessary? */
if(value >= 0.0 && value <= 100.0)
gtk_widget_show(battery->hbox);
if(value < 0.0)
{
_set_image(battery, BATTERY_LEVEL_UNKNOWN);
value = 0.0;
snprintf(buf, sizeof(buf), "%s", _("Unknown"));
}
else if(value <= 10.0)
_set_image(battery, BATTERY_LEVEL_CAUTION);
else if(value <= 20.0)
_set_image(battery, BATTERY_LEVEL_LOW);
else if(value <= 100.0)
_set_image(battery, BATTERY_LEVEL_NORMAL);
else
{
_set_image(battery, BATTERY_LEVEL_ERROR);
value = 0.0;
snprintf(buf, sizeof(buf), "%s", _("Error"));
}
#ifndef EMBEDDED
gtk_label_set_text(GTK_LABEL(battery->label), buf);
#endif
if(charging)
gtk_widget_show(battery->charging);
else
gtk_widget_hide(battery->charging);
}
static void _set_image(Battery * battery, BatteryLevel level)
{
char const * icons[BATTERY_LEVEL_COUNT] =
{
"stock_dialog-question",
"stock_dialog-error",
"battery-caution",
"battery-low",
"battery",
"battery" /* XXX find a better icon */
};
if(battery->level == level)
return;
battery->level = level;
gtk_image_set_from_icon_name(GTK_IMAGE(battery->image), icons[level],
battery->helper->icon_size);
}
/* callbacks */
/* on_timeout */
#if defined(__NetBSD__)
static int _get_tre(int fd, int sensor, envsys_tre_data_t * tre);
static gdouble _battery_get(Battery * battery, gboolean * charging)
{
int i;
envsys_basic_info_t info;
envsys_tre_data_t tre;
unsigned int rate = 0;
unsigned int charge = 0;
unsigned int maxcharge = 0;
*charging = FALSE;
if(battery->fd == -1
&& (battery->fd = open(_PATH_SYSMON, O_RDONLY) < 0))
{
error_set("%s: %s", _PATH_SYSMON, strerror(errno));
return -1.0;
}
for(i = 0; i >= 0; i++)
{
memset(&info, 0, sizeof(info));
info.sensor = i;
if(ioctl(battery->fd, ENVSYS_GTREINFO, &info) == -1)
{
close(battery->fd);
battery->fd = -1;
/* FIXME why does it always break once? */
error_set("%s: %s", "ENVSYS_GTREINFO", strerror(errno));
return -1.0;
}
if(!(info.validflags & ENVSYS_FVALID))
break;
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s() %d \"%s\"\n", __func__, i,
info.desc);
#endif
if(strcmp("acpiacad0 connected", info.desc) == 0
&& _get_tre(battery->fd, i, &tre) == 0
&& tre.validflags & ENVSYS_FCURVALID)
/* FIXME implement */
continue;
if(strncmp("acpibat ", info.desc, 7) != 0
|| info.desc[7] == '\0'
|| info.desc[8] != ' ')
continue;
if(strcmp("charge", &info.desc[9]) == 0
&& _get_tre(battery->fd, i, &tre) == 0
&& tre.validflags & ENVSYS_FCURVALID
&& tre.validflags & ENVSYS_FMAXVALID)
{
charge += tre.cur.data_us;
maxcharge += tre.max.data_us;
}
else if(strcmp("charge rate", &info.desc[9]) == 0
&& _get_tre(battery->fd, i, &tre) == 0
&& tre.validflags & ENVSYS_FCURVALID)
rate += tre.cur.data_us;
else if(strcmp("charging", &info.desc[9]) == 0
&& _get_tre(battery->fd, i, &tre) == 0
&& tre.validflags & ENVSYS_FCURVALID
&& tre.cur.data_us > 0)
{
*charging = TRUE;
continue;
}
else if(strcmp("discharge rate", &info.desc[9]) == 0
&& _get_tre(battery->fd, i, &tre) == 0
&& tre.validflags & ENVSYS_FCURVALID)
rate += tre.cur.data_us;
}
return (charge * 100.0) / maxcharge;
}
static int _get_tre(int fd, int sensor, envsys_tre_data_t * tre)
{
memset(tre, 0, sizeof(*tre));
tre->sensor = sensor;
if(ioctl(fd, ENVSYS_GTREDATA, tre) == -1)
return 1;
return !(tre->validflags & ENVSYS_FVALID);
}
#elif defined(__linux__)
static gdouble _battery_get(Battery * battery, gboolean * charging)
{
const char apm[] = "/proc/apm";
char buf[80];
ssize_t buf_cnt;
double d;
unsigned int u;
int i;
int b;
*charging = FALSE;
if(battery->fd == -1 && (battery->fd = open(apm, O_RDONLY)) == -1)
{
error_set("%s: %s", apm, strerror(errno));
return 0.0 / 0.0;
}
errno = ENODATA;
if((buf_cnt = read(battery->fd, buf, sizeof(buf))) <= 0)
{
error_set("%s: %s", apm, strerror(errno));
close(battery->fd);
battery->fd = -1;
return 0.0 / 0.0;
}
buf[--buf_cnt] = '\0';
if(sscanf(buf, "%lf %lf %x %x %x %x %d%% %d min", &d, &d, &u, &u, &u,
&u, &b, &i) != 8)
{
error_set("%s: %s", apm, strerror(errno));
d = 0.0 / 0.0;
}
else
d = b;
close(battery->fd);
battery->fd = -1;
return d;
}
#else
static gdouble _battery_get(Battery * battery, gboolean * charging)
{
*charging = FALSE;
/* FIXME not supported */
error_set("%s", strerror(ENOSYS));
return 0.0 / 0.0;
}
#endif
/* callbacks */
/* on_timeout */
static gboolean _on_timeout(gpointer data)
{
Battery * battery = data;
gboolean charging;
gdouble value;
value = _battery_get(battery, &charging);
_battery_set(battery, value, charging);
return TRUE;
}