Desktop
/* $Id: battery.c,v 1.30 2012/09/27 18:19:03 khorben Exp $ */
/* Copyright (c) 2010-2012 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_EMPTY,
BATTERY_LEVEL_CAUTION,
BATTERY_LEVEL_LOW,
BATTERY_LEVEL_GOOD,
BATTERY_LEVEL_FULL
} BatteryLevel;
#define BATTERY_LEVEL_LAST BATTERY_LEVEL_FULL
#define BATTERY_LEVEL_COUNT (BATTERY_LEVEL_LAST + 1)
typedef struct _PanelApplet
{
PanelAppletHelper * helper;
BatteryLevel level;
int charging;
/* widgets */
GtkWidget * hbox;
GtkWidget * image;
GtkWidget * label;
GtkWidget * progress;
guint timeout;
/* preferences */
GtkWidget * pr_level;
/* platform-specific */
#if defined(__NetBSD__) || defined(__linux__)
int fd;
#endif
} Battery;
/* prototypes */
static Battery * _battery_init(PanelAppletHelper * helper, GtkWidget ** widget);
static void _battery_destroy(Battery * battery);
static GtkWidget * _battery_settings(Battery * battery, gboolean apply,
gboolean reset);
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 */
PanelAppletDefinition applet =
{
"Battery",
"battery",
NULL,
_battery_init,
_battery_destroy,
_battery_settings,
FALSE,
TRUE
};
/* private */
/* functions */
/* battery_init */
static Battery * _battery_init(PanelAppletHelper * helper, GtkWidget ** widget)
{
Battery * battery;
GtkWidget * vbox;
GtkWidget * hbox;
PangoFontDescription * bold;
if((battery = malloc(sizeof(*battery))) == NULL)
return NULL;
battery->helper = helper;
battery->level = -1;
battery->charging = -1;
battery->timeout = 0;
#if defined(__NetBSD__) || defined(__linux__)
battery->fd = -1;
#endif
hbox = gtk_hbox_new(FALSE, 4);
battery->hbox = hbox;
battery->image = gtk_image_new_from_icon_name("battery",
helper->icon_size);
gtk_box_pack_start(GTK_BOX(hbox), battery->image, FALSE, TRUE, 0);
battery->label = gtk_label_new(" ");
gtk_box_pack_start(GTK_BOX(hbox), battery->label, FALSE, TRUE, 0);
#ifndef EMBEDDED
gtk_widget_show(battery->label);
#endif
battery->progress = NULL;
battery->pr_level = NULL;
if(helper->type == PANEL_APPLET_TYPE_NOTIFICATION)
{
bold = pango_font_description_new();
pango_font_description_set_weight(bold, PANGO_WEIGHT_BOLD);
vbox = gtk_vbox_new(FALSE, 4);
gtk_widget_modify_font(battery->label, bold);
gtk_widget_show(battery->label);
gtk_box_pack_start(GTK_BOX(vbox), hbox, TRUE, TRUE, 0);
battery->progress = gtk_progress_bar_new();
gtk_box_pack_start(GTK_BOX(vbox), battery->progress, TRUE, TRUE,
0);
*widget = vbox;
pango_font_description_free(bold);
}
else
*widget = hbox;
battery->timeout = g_timeout_add(5000, _on_timeout, battery);
_on_timeout(battery);
gtk_widget_show(battery->image);
return battery;
}
/* battery_destroy */
static void _battery_destroy(Battery * battery)
{
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_settings */
static void _settings_apply(Battery * battery, PanelAppletHelper * helper);
static void _settings_reset(Battery * battery, PanelAppletHelper * helper);
static GtkWidget * _battery_settings(Battery * battery, gboolean apply,
gboolean reset)
{
PanelAppletHelper * helper = battery->helper;
if(battery->pr_level == NULL)
{
battery->pr_level = gtk_check_button_new_with_label(
_("Show the battery level"));
gtk_widget_show(battery->pr_level);
reset = TRUE;
}
if(reset == TRUE)
_settings_reset(battery, helper);
if(apply == TRUE)
_settings_apply(battery, helper);
return battery->pr_level;
}
static void _settings_apply(Battery * battery, PanelAppletHelper * helper)
{
gboolean active;
active = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(
battery->pr_level));
if(active)
gtk_widget_show(battery->label);
else
gtk_widget_hide(battery->label);
helper->config_set(helper->panel, "battery", "level",
active ? "1" : "0");
}
static void _settings_reset(Battery * battery, PanelAppletHelper * helper)
{
#ifndef EMBEDDED
gboolean active = TRUE;
#else
gboolean active = FALSE;
#endif
char const * p;
if((p = helper->config_get(helper->panel, "battery", "level")) != NULL)
active = strtol(p, NULL, 10) ? TRUE : FALSE;
gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(battery->pr_level),
active);
}
/* battery_set */
static void _set_image(Battery * battery, BatteryLevel level,
gboolean charging);
static void _battery_set(Battery * battery, gdouble value, gboolean charging)
{
char buf[256];
snprintf(buf, sizeof(buf), "%.0lf%% ", value);
/* XXX only show when necessary? */
if(value >= 0.0 && value <= 100.0)
{
gtk_widget_show(battery->hbox);
if(battery->progress != NULL)
{
gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(
battery->progress),
value / 100.0);
gtk_widget_show(battery->progress);
}
}
else if(battery->progress != NULL)
gtk_widget_hide(battery->progress);
if(value < 0.0)
{
_set_image(battery, BATTERY_LEVEL_UNKNOWN, FALSE);
value = 0.0;
snprintf(buf, sizeof(buf), "%s", _("Unknown"));
}
else if(value <= 1.0)
_set_image(battery, BATTERY_LEVEL_EMPTY, charging);
else if(value <= 10.0)
_set_image(battery, BATTERY_LEVEL_CAUTION, charging);
else if(value <= 20.0)
_set_image(battery, BATTERY_LEVEL_LOW, charging);
else if(value <= 75.0)
_set_image(battery, BATTERY_LEVEL_GOOD, charging);
else if(value <= 100.0)
_set_image(battery, BATTERY_LEVEL_FULL, charging);
else
{
_set_image(battery, BATTERY_LEVEL_ERROR, FALSE);
value = 0.0;
snprintf(buf, sizeof(buf), "%s", _("Error"));
}
#ifndef EMBEDDED
gtk_label_set_text(GTK_LABEL(battery->label), buf);
#endif
#if GTK_CHECK_VERSION(2, 12, 0)
snprintf(buf, sizeof(buf), _("Battery level: %.0lf%%%s"), value,
charging ? _(" (charging)") : "");
gtk_widget_set_tooltip_text(battery->hbox, buf);
#endif
}
static void _set_image(Battery * battery, BatteryLevel level, gboolean charging)
{
char const * icons[BATTERY_LEVEL_COUNT][2] =
{
{ "stock_dialog-question", "stock_dialog-question" },
{ "battery-missing", "battery-missing" },
{ "battery-empty", "battery-caution-charging" },
{ "battery-caution", "battery-caution-charging" },
{ "battery-low", "battery-low-charging" },
{ "battery-good", "battery-good-charging" },
{ "battery-full", "battery-full-charging" }
};
if(battery->level == level && battery->charging == charging)
return;
battery->level = level;
battery->charging = charging;
gtk_image_set_from_icon_name(GTK_IMAGE(battery->image),
icons[level][charging ? 1 : 0],
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 < 0 && (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;
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;
unsigned int x = 0;
int i;
int b;
*charging = FALSE;
if(battery->fd < 0 && (battery->fd = open(apm, O_RDONLY)) < 0)
{
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, &x, &u,
&u, &b, &i) != 8)
{
error_set("%s: %s", apm, strerror(errno));
d = 0.0 / 0.0;
}
else
d = b;
*charging = (x != 0) ? TRUE : FALSE;
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 = FALSE;
gdouble value;
value = _battery_get(battery, &charging);
_battery_set(battery, value, charging);
return TRUE;
}