1 /**************************************************************************
5 * Copyright (C) 2009 Sebastian Reichel <elektranox@gmail.com>
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License version 2
9 * or any later version as published by the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
18 **************************************************************************/
24 #include <cairo-xlib.h>
25 #include <pango/pangocairo.h>
36 PangoFontDescription
*bat1_font_desc
=0;
37 PangoFontDescription
*bat2_font_desc
=0;
38 struct batstate battery_state
;
41 static char buf_bat_percentage
[10];
42 static char buf_bat_time
[20];
44 int8_t battery_low_status
;
45 char *battery_low_cmd
=0;
46 unsigned char battery_low_cmd_send
=0;
47 char *path_energy_now
=0;
48 char *path_energy_full
=0;
49 char *path_current_now
=0;
52 void update_batterys()
56 for (i
=0 ; i
< nb_panel
; i
++)
57 panel1
[i
].battery
.area
.resize
= 1;
66 const char *entryname
;
67 char *battery_dir
= 0;
69 if (!battery_enabled
) return;
71 directory
= g_dir_open("/sys/class/power_supply", 0, &error
);
75 while ((entryname
=g_dir_read_name(directory
))) {
76 if (strncmp(entryname
,"AC", 2) == 0) continue;
78 char *path1
= g_build_filename("/sys/class/power_supply", entryname
, "present", NULL
);
79 if (g_file_test (path1
, G_FILE_TEST_EXISTS
)) {
81 battery_dir
= g_build_filename("/sys/class/power_supply", entryname
, NULL
);
88 g_dir_close(directory
);
91 fprintf(stderr
, "ERROR: battery applet can't found power_supply\n");
95 char *path1
= g_build_filename(battery_dir
, "energy_now", NULL
);
96 if (g_file_test (path1
, G_FILE_TEST_EXISTS
)) {
97 path_energy_now
= g_build_filename(battery_dir
, "energy_now", NULL
);
98 path_energy_full
= g_build_filename(battery_dir
, "energy_full", NULL
);
101 char *path2
= g_build_filename(battery_dir
, "charge_now", NULL
);
102 if (g_file_test (path2
, G_FILE_TEST_EXISTS
)) {
103 path_energy_now
= g_build_filename(battery_dir
, "charge_now", NULL
);
104 path_energy_full
= g_build_filename(battery_dir
, "charge_full", NULL
);
107 fprintf(stderr
, "ERROR: can't found energy_* or charge_*\n");
111 if (path_energy_now
&& path_energy_full
) {
112 path_current_now
= g_build_filename(battery_dir
, "current_now", NULL
);
113 path_status
= g_build_filename(battery_dir
, "status", NULL
);
116 FILE *fp1
, *fp2
, *fp3
, *fp4
;
117 fp1
= fopen(path_energy_now
, "r");
118 fp2
= fopen(path_energy_full
, "r");
119 fp3
= fopen(path_current_now
, "r");
120 fp4
= fopen(path_status
, "r");
121 if (fp1
== NULL
|| fp2
== NULL
|| fp3
== NULL
|| fp4
== NULL
) {
123 fprintf(stderr
, "ERROR: battery applet can't open energy_now\n");
135 install_timer(0, 1000000, 5, 0, update_batterys
);
139 void cleanup_battery()
143 pango_font_description_free(bat1_font_desc
);
145 pango_font_description_free(bat2_font_desc
);
147 g_free(path_energy_now
);
148 if (path_energy_full
)
149 g_free(path_energy_full
);
150 if (path_current_now
)
151 g_free(path_current_now
);
155 g_free(battery_low_cmd
);
157 battery_low_cmd
= path_energy_now
= path_energy_full
= path_current_now
= path_status
= 0;
158 bat1_font_desc
= bat2_font_desc
= 0;
162 void init_battery_panel(void *p
)
164 Panel
*panel
= (Panel
*)p
;
165 Battery
*battery
= &panel
->battery
;
166 int bat_percentage_height
, bat_percentage_height_ink
, bat_time_height
, bat_time_height_ink
;
168 if (!battery_enabled
)
171 battery
->area
.parent
= p
;
172 battery
->area
.panel
= p
;
173 battery
->area
._draw_foreground
= draw_battery
;
174 battery
->area
._resize
= resize_battery
;
175 battery
->area
.resize
= 1;
176 battery
->area
.redraw
= 1;
177 battery
->area
.on_screen
= 1;
179 update_battery(&battery_state
);
180 snprintf(buf_bat_percentage
, sizeof(buf_bat_percentage
), "%d%%", battery_state
.percentage
);
181 snprintf(buf_bat_time
, sizeof(buf_bat_time
), "%02d:%02d", battery_state
.time
.hours
, battery_state
.time
.minutes
);
183 get_text_size(bat1_font_desc
, &bat_percentage_height_ink
, &bat_percentage_height
, panel
->area
.height
, buf_bat_percentage
, strlen(buf_bat_percentage
));
184 get_text_size(bat2_font_desc
, &bat_time_height_ink
, &bat_time_height
, panel
->area
.height
, buf_bat_time
, strlen(buf_bat_time
));
186 if (panel_horizontal
) {
187 // panel horizonal => fixed height and posy
188 battery
->area
.posy
= panel
->area
.pix
.border
.width
+ panel
->area
.paddingy
;
189 battery
->area
.height
= panel
->area
.height
- (2 * battery
->area
.posy
);
192 // panel vertical => fixed width, height, posy and posx
193 battery
->area
.posy
= panel
->clock
.area
.posy
+ panel
->clock
.area
.height
+ panel
->area
.paddingx
;
194 battery
->area
.height
= (2 * battery
->area
.paddingxlr
) + (bat_time_height
+ bat_percentage_height
);
195 battery
->area
.posx
= panel
->area
.pix
.border
.width
+ panel
->area
.paddingy
;
196 battery
->area
.width
= panel
->area
.width
- (2 * panel
->area
.pix
.border
.width
) - (2 * panel
->area
.paddingy
);
199 battery
->bat1_posy
= (battery
->area
.height
- bat_percentage_height
) / 2;
200 battery
->bat1_posy
-= ((bat_time_height_ink
+ 2) / 2);
201 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;
205 void update_battery() {
208 int64_t energy_now
= 0, energy_full
= 0, current_now
= 0;
210 int8_t new_percentage
= 0;
212 fp
= fopen(path_status
, "r");
214 fgets(tmp
, sizeof tmp
, fp
);
217 battery_state
.state
= BATTERY_UNKNOWN
;
218 if(strcasecmp(tmp
, "Charging\n")==0) battery_state
.state
= BATTERY_CHARGING
;
219 if(strcasecmp(tmp
, "Discharging\n")==0) battery_state
.state
= BATTERY_DISCHARGING
;
220 if(strcasecmp(tmp
, "Full\n")==0) battery_state
.state
= BATTERY_FULL
;
221 if (battery_state
.state
== BATTERY_DISCHARGING
) {
226 fp
= fopen(path_energy_now
, "r");
228 fgets(tmp
, sizeof tmp
, fp
);
229 energy_now
= atoi(tmp
);
233 fp
= fopen(path_energy_full
, "r");
235 fgets(tmp
, sizeof tmp
, fp
);
236 energy_full
= atoi(tmp
);
240 fp
= fopen(path_current_now
, "r");
242 fgets(tmp
, sizeof tmp
, fp
);
243 current_now
= atoi(tmp
);
247 if(current_now
> 0) {
248 switch(battery_state
.state
) {
249 case BATTERY_CHARGING
:
250 seconds
= 3600 * (energy_full
- energy_now
) / current_now
;
252 case BATTERY_DISCHARGING
:
253 seconds
= 3600 * energy_now
/ current_now
;
261 battery_state
.time
.hours
= seconds
/ 3600;
262 seconds
-= 3600 * battery_state
.time
.hours
;
263 battery_state
.time
.minutes
= seconds
/ 60;
264 seconds
-= 60 * battery_state
.time
.minutes
;
265 battery_state
.time
.seconds
= seconds
;
268 new_percentage
= (energy_now
*100)/energy_full
;
270 if(battery_low_status
> new_percentage
&& battery_state
.state
== BATTERY_DISCHARGING
&& !battery_low_cmd_send
) {
271 printf("battery low, executing: %s\n", battery_low_cmd
);
273 system(battery_low_cmd
);
274 battery_low_cmd_send
= 1;
276 if(battery_low_status
< new_percentage
&& battery_state
.state
== BATTERY_CHARGING
&& battery_low_cmd_send
) {
277 battery_low_cmd_send
= 0;
280 battery_state
.percentage
= new_percentage
;
282 // clamp percentage to 100 in case battery is misreporting that its current charge is more than its max
283 if(battery_state
.percentage
> 100) {
284 battery_state
.percentage
= 100;
289 void draw_battery (void *obj
, cairo_t
*c
, int active
)
291 Battery
*battery
= obj
;
294 layout
= pango_cairo_create_layout (c
);
297 pango_layout_set_font_description(layout
, bat1_font_desc
);
298 pango_layout_set_width(layout
, battery
->area
.width
* PANGO_SCALE
);
299 pango_layout_set_alignment(layout
, PANGO_ALIGN_CENTER
);
300 pango_layout_set_text(layout
, buf_bat_percentage
, strlen(buf_bat_percentage
));
302 cairo_set_source_rgba(c
, battery
->font
.color
[0], battery
->font
.color
[1], battery
->font
.color
[2], battery
->font
.alpha
);
304 pango_cairo_update_layout(c
, layout
);
305 cairo_move_to(c
, 0, battery
->bat1_posy
);
306 pango_cairo_show_layout(c
, layout
);
308 pango_layout_set_font_description(layout
, bat2_font_desc
);
309 pango_layout_set_indent(layout
, 0);
310 pango_layout_set_text(layout
, buf_bat_time
, strlen(buf_bat_time
));
311 pango_layout_set_width(layout
, battery
->area
.width
* PANGO_SCALE
);
313 pango_cairo_update_layout(c
, layout
);
314 cairo_move_to(c
, 0, battery
->bat2_posy
);
315 pango_cairo_show_layout(c
, layout
);
317 g_object_unref(layout
);
321 void resize_battery(void *obj
)
323 Battery
*battery
= obj
;
325 int percentage_width
, time_width
, new_width
;
327 percentage_width
= time_width
= 0;
328 battery
->area
.redraw
= 1;
330 snprintf(buf_bat_percentage
, sizeof(buf_bat_percentage
), "%d%%", battery_state
.percentage
);
331 if(battery_state
.state
== BATTERY_FULL
) {
332 strcpy(buf_bat_time
, "Full");
334 snprintf(buf_bat_time
, sizeof(buf_bat_time
), "%02d:%02d", battery_state
.time
.hours
, battery_state
.time
.minutes
);
336 // vertical panel doen't adjust width
337 if (!panel_horizontal
) return;
342 pmap
= XCreatePixmap(server
.dsp
, server
.root_win
, battery
->area
.width
, battery
->area
.height
, server
.depth
);
344 cs
= cairo_xlib_surface_create(server
.dsp
, pmap
, server
.visual
, battery
->area
.width
, battery
->area
.height
);
345 c
= cairo_create(cs
);
346 layout
= pango_cairo_create_layout(c
);
349 pango_layout_set_font_description(layout
, bat1_font_desc
);
350 pango_layout_set_indent(layout
, 0);
351 pango_layout_set_text(layout
, buf_bat_percentage
, strlen(buf_bat_percentage
));
352 pango_layout_get_pixel_size(layout
, &percentage_width
, NULL
);
354 pango_layout_set_font_description(layout
, bat2_font_desc
);
355 pango_layout_set_indent(layout
, 0);
356 pango_layout_set_text(layout
, buf_bat_time
, strlen(buf_bat_time
));
357 pango_layout_get_pixel_size(layout
, &time_width
, NULL
);
359 if(percentage_width
> time_width
) new_width
= percentage_width
;
360 else new_width
= time_width
;
362 new_width
+= (2*battery
->area
.paddingxlr
) + (2*battery
->area
.pix
.border
.width
);
364 int old_width
= battery
->area
.width
;
366 Panel
*panel
= ((Area
*)obj
)->panel
;
367 battery
->area
.width
= new_width
+ 1;
368 battery
->area
.posx
= panel
->area
.width
- battery
->area
.width
- panel
->area
.paddingxlr
- panel
->area
.pix
.border
.width
;
369 if (panel
->clock
.area
.on_screen
)
370 battery
->area
.posx
-= (panel
->clock
.area
.width
+ panel
->area
.paddingx
);
372 if(new_width
> old_width
|| new_width
< (old_width
-6)) {
373 // refresh and resize other objects on panel
374 // we try to limit the number of refresh
375 // printf("battery_width %d, new_width %d\n", battery->area.width, new_width);
376 panel
->area
.resize
= 1;
377 systray
.area
.resize
= 1;
381 g_object_unref (layout
);
383 cairo_surface_destroy (cs
);
384 XFreePixmap (server
.dsp
, pmap
);