added battery code

git-svn-id: http://tint2.googlecode.com/svn/trunk@74 121b4492-b84c-0410-8b4c-0d4edfb3f3cc
This commit is contained in:
lorthiois@bbsoft.fr 2009-05-15 20:48:55 +00:00
parent 3d07eeeb48
commit 01b6e81b8c
2 changed files with 306 additions and 0 deletions

244
src/battery/battery.c Normal file
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/**************************************************************************
*
* Tint2 : battery
*
* Copyright (C) 2009 Sebastian Reichel <elektranox@gmail.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version 2
* or any later version as published by the Free Software Foundation.
*
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
**************************************************************************/
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <cairo.h>
#include <cairo-xlib.h>
#include <pango/pangocairo.h>
#include "window.h"
#include "server.h"
#include "taskbar.h"
#include "panel.h"
#include "area.h"
#include "battery.h"
#include "clock.h"
PangoFontDescription *bat1_font_desc;
PangoFontDescription *bat2_font_desc;
struct batstate battery_state;
static char buf_bat_percentage[10];
static char buf_bat_time[20];
int8_t battery_low_status;
char* battery_low_cmd;
void update_battery(struct batstate *data) {
FILE *fp;
char tmp[25];
int64_t energy_now = 0, energy_full = 0, current_now = 0;
int seconds = 0;
int8_t new_percentage = 0;
fp = fopen("/sys/class/power_supply/BAT0/energy_now", "r");
if(fp != NULL) {
fgets(tmp, sizeof tmp, fp);
energy_now = atoi(tmp);
fclose(fp);
} else printf("ERROR: battery applet can't open energy_now\n");
fp = fopen("/sys/class/power_supply/BAT0/energy_full", "r");
if(fp != NULL) {
fgets(tmp, sizeof tmp, fp);
energy_full = atoi(tmp);
fclose(fp);
} else printf("ERROR: battery applet can't open energy_full\n");
fp = fopen("/sys/class/power_supply/BAT0/current_now", "r");
if(fp != NULL) {
fgets(tmp, sizeof tmp, fp);
current_now = atoi(tmp);
fclose(fp);
} else printf("ERROR: battery applet can't open current_now\n");
fp = fopen("/sys/class/power_supply/BAT0/status", "r");
if(fp != NULL) {
fgets(tmp, sizeof tmp, fp);
fclose(fp);
} else printf("ERROR: battery applet can't open status");
data->state = BATTERY_UNKNOWN;
if(strcasecmp(tmp, "Charging\n")==0) data->state = BATTERY_CHARGING;
if(strcasecmp(tmp, "Discharging\n")==0) data->state = BATTERY_DISCHARGING;
if(current_now > 0) {
switch(data->state) {
case BATTERY_CHARGING:
seconds = 3600 * (energy_full - energy_now) / current_now;
break;
case BATTERY_DISCHARGING:
seconds = 3600 * energy_now / current_now;
break;
default:
seconds = 0;
break;
}
} else seconds = 0;
data->time.hours = seconds / 3600;
seconds -= 3600 * data->time.hours;
data->time.minutes = seconds / 60;
seconds -= 60 * data->time.minutes;
data->time.seconds = seconds;
new_percentage = (energy_now*100)/energy_full;
if(battery_low_status != 0 && battery_low_status == new_percentage && data->percentage > new_percentage) {
printf("battery low, executing: %s\n", battery_low_cmd);
if(battery_low_cmd) system(battery_low_cmd);
}
data->percentage = new_percentage;
}
void init_battery()
{
Panel *panel;
Battery *battery;
int i, bat_percentage_height, bat_percentage_height_ink, bat_time_height, bat_time_height_ink;
for (i=0 ; i < nb_panel ; i++) {
panel = &panel1[i];
battery = &panel->battery;
battery->area.parent = panel;
battery->area.panel = panel;
battery->area._draw_foreground = draw_battery;
battery->area._resize = resize_battery;
if (!battery->area.on_screen) continue;
battery->area.posy = panel->area.pix.border.width + panel->area.paddingy;
battery->area.height = panel->area.height - (2 * battery->area.posy);
battery->area.resize = 1;
battery->area.redraw = 1;
update_battery(&battery_state);
snprintf(buf_bat_percentage, sizeof(buf_bat_percentage), "%d%%", battery_state.percentage);
snprintf(buf_bat_time, sizeof(buf_bat_time), "%02d:%02d", battery_state.time.hours, battery_state.time.minutes);
get_text_size(bat1_font_desc, &bat_percentage_height_ink, &bat_percentage_height, panel->area.height, buf_bat_percentage, strlen(buf_bat_percentage));
battery->bat1_posy = (battery->area.height - bat_percentage_height) / 2;
get_text_size(bat2_font_desc, &bat_time_height_ink, &bat_time_height, panel->area.height, buf_bat_time, strlen(buf_bat_time));
battery->bat1_posy -= ((bat_time_height_ink + 2) / 2);
battery->bat2_posy = battery->bat1_posy + bat_percentage_height + 2 - (bat_percentage_height - bat_percentage_height_ink)/2 - (bat_time_height - bat_time_height_ink)/2;
}
}
void draw_battery (void *obj, cairo_t *c, int active)
{
Battery *battery = obj;
PangoLayout *layout;
layout = pango_cairo_create_layout (c);
// draw layout
pango_layout_set_font_description(layout, bat1_font_desc);
pango_layout_set_width(layout, battery->area.width * PANGO_SCALE);
pango_layout_set_alignment(layout, PANGO_ALIGN_CENTER);
pango_layout_set_text(layout, buf_bat_percentage, strlen(buf_bat_percentage));
cairo_set_source_rgba(c, battery->font.color[0], battery->font.color[1], battery->font.color[2], battery->font.alpha);
pango_cairo_update_layout(c, layout);
cairo_move_to(c, 0, battery->bat1_posy);
pango_cairo_show_layout(c, layout);
pango_layout_set_font_description(layout, bat2_font_desc);
pango_layout_set_indent(layout, 0);
pango_layout_set_text(layout, buf_bat_time, strlen(buf_bat_time));
pango_layout_set_width(layout, battery->area.width * PANGO_SCALE);
pango_cairo_update_layout(c, layout);
cairo_move_to(c, 0, battery->bat2_posy);
pango_cairo_show_layout(c, layout);
g_object_unref(layout);
}
void resize_battery(void *obj)
{
Battery *battery = obj;
PangoLayout *layout;
int percentage_width, time_width, new_width;
percentage_width = time_width = 0;
battery->area.redraw = 1;
snprintf(buf_bat_percentage, sizeof(buf_bat_percentage), "%d%%", battery_state.percentage);
snprintf(buf_bat_time, sizeof(buf_bat_time), "%02d:%02d", battery_state.time.hours, battery_state.time.minutes);
cairo_surface_t *cs;
cairo_t *c;
Pixmap pmap;
pmap = XCreatePixmap(server.dsp, server.root_win, battery->area.width, battery->area.height, server.depth);
cs = cairo_xlib_surface_create(server.dsp, pmap, server.visual, battery->area.width, battery->area.height);
c = cairo_create(cs);
layout = pango_cairo_create_layout(c);
// check width
pango_layout_set_font_description(layout, bat1_font_desc);
pango_layout_set_indent(layout, 0);
pango_layout_set_text(layout, buf_bat_percentage, strlen(buf_bat_percentage));
pango_layout_get_pixel_size(layout, &percentage_width, NULL);
pango_layout_set_font_description(layout, bat2_font_desc);
pango_layout_set_indent(layout, 0);
pango_layout_set_text(layout, buf_bat_time, strlen(buf_bat_time));
pango_layout_get_pixel_size(layout, &time_width, NULL);
if(percentage_width > time_width) new_width = percentage_width;
else new_width = time_width;
new_width += (2*battery->area.paddingxlr) + (2*battery->area.pix.border.width);
if(new_width > battery->area.width || new_width < (battery->area.width-6)) {
int i;
Panel *panel = ((Area*)obj)->panel;
printf("battery_width %d, new_width %d\n", battery->area.width, new_width);
// resize battery
// we try to limit the number of resize
battery->area.width = new_width + 1;
battery->area.posx = panel->area.width - battery->area.width - panel->area.paddingxlr - panel->area.pix.border.width;
if (panel->clock.area.on_screen)
battery->area.posx -= (panel->clock.area.width + panel->area.paddingx);
// resize other objects on panel
for (i=0 ; i < nb_panel ; i++)
panel1[i].area.resize = 1;
systray.area.resize = 1;
panel_refresh = 1;
}
g_object_unref (layout);
cairo_destroy (c);
cairo_surface_destroy (cs);
XFreePixmap (server.dsp, pmap);
}

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/**************************************************************************
* Copyright (C) 2009 Sebastian Reichel <elektranox@gmail.com>
*
* Battery with functional data (percentage, time to life) and drawing data
* (area, font, ...). Each panel use his own drawing data.
*
**************************************************************************/
#ifndef BATTERY_H
#define BATTERY_H
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "common.h"
#include "area.h"
typedef struct Battery {
// always start with area
Area area;
config_color font;
int bat1_posy;
int bat2_posy;
} Battery;
enum chargestate {
BATTERY_UNKNOWN,
BATTERY_CHARGING,
BATTERY_DISCHARGING
};
typedef struct battime {
int16_t hours;
int8_t minutes;
int8_t seconds;
} battime;
typedef struct batstate {
int percentage;
struct battime time;
enum chargestate state;
} batstate;
extern struct batstate battery_state;
extern PangoFontDescription *bat1_font_desc;
extern PangoFontDescription *bat2_font_desc;
extern int8_t battery_low_status;
extern char* battery_low_cmd;
// initialize clock : y position, ...
void update_battery(struct batstate *data);
void init_battery();
void draw_battery(void *obj, cairo_t *c, int active);
void resize_battery(void *obj);
#endif