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 char *path_energy_now
=0;
47 char *path_energy_full
=0;
48 char *path_current_now
=0;
51 void update_batterys()
55 for (i
=0 ; i
< nb_panel
; i
++)
56 panel1
[i
].battery
.area
.resize
= 1;
65 const char *entryname
;
66 char *battery_dir
= 0;
68 if (!battery_enabled
) return;
70 directory
= g_dir_open("/sys/class/power_supply", 0, &error
);
74 while ((entryname
=g_dir_read_name(directory
))) {
75 if (strncmp(entryname
,"AC", 2) == 0) continue;
77 char *path1
= g_build_filename("/sys/class/power_supply", entryname
, "present", NULL
);
78 if (g_file_test (path1
, G_FILE_TEST_EXISTS
)) {
80 battery_dir
= g_build_filename("/sys/class/power_supply", entryname
, NULL
);
87 g_dir_close(directory
);
90 fprintf(stderr
, "ERROR: battery applet can't found power_supply\n");
94 char *path1
= g_build_filename(battery_dir
, "energy_now", NULL
);
95 if (g_file_test (path1
, G_FILE_TEST_EXISTS
)) {
96 path_energy_now
= g_build_filename(battery_dir
, "energy_now", NULL
);
97 path_energy_full
= g_build_filename(battery_dir
, "energy_full", NULL
);
100 char *path2
= g_build_filename(battery_dir
, "charge_now", NULL
);
101 if (g_file_test (path2
, G_FILE_TEST_EXISTS
)) {
102 path_energy_now
= g_build_filename(battery_dir
, "charge_now", NULL
);
103 path_energy_full
= g_build_filename(battery_dir
, "charge_full", NULL
);
106 fprintf(stderr
, "ERROR: can't found energy_* or charge_*\n");
110 if (path_energy_now
&& path_energy_full
) {
111 path_current_now
= g_build_filename(battery_dir
, "current_now", NULL
);
112 path_status
= g_build_filename(battery_dir
, "status", NULL
);
115 FILE *fp1
, *fp2
, *fp3
, *fp4
;
116 fp1
= fopen(path_energy_now
, "r");
117 fp2
= fopen(path_energy_full
, "r");
118 fp3
= fopen(path_current_now
, "r");
119 fp4
= fopen(path_status
, "r");
120 if (fp1
== NULL
|| fp2
== NULL
|| fp3
== NULL
|| fp4
== NULL
) {
122 fprintf(stderr
, "ERROR: battery applet can't open energy_now\n");
134 install_timer(0, 1000000, 5, 0, update_batterys
);
138 void cleanup_battery()
142 pango_font_description_free(bat1_font_desc
);
144 pango_font_description_free(bat2_font_desc
);
146 g_free(path_energy_now
);
147 if (path_energy_full
)
148 g_free(path_energy_full
);
149 if (path_current_now
)
150 g_free(path_current_now
);
154 g_free(battery_low_cmd
);
156 battery_low_cmd
= path_energy_now
= path_energy_full
= path_current_now
= path_status
= 0;
157 bat1_font_desc
= bat2_font_desc
= 0;
161 void init_battery_panel(void *p
)
163 Panel
*panel
= (Panel
*)p
;
164 Battery
*battery
= &panel
->battery
;
165 int bat_percentage_height
, bat_percentage_height_ink
, bat_time_height
, bat_time_height_ink
;
167 if (!battery_enabled
)
170 battery
->area
.parent
= p
;
171 battery
->area
.panel
= p
;
172 battery
->area
._draw_foreground
= draw_battery
;
173 battery
->area
._resize
= resize_battery
;
174 battery
->area
.resize
= 1;
175 battery
->area
.redraw
= 1;
176 battery
->area
.on_screen
= 1;
178 update_battery(&battery_state
);
179 snprintf(buf_bat_percentage
, sizeof(buf_bat_percentage
), "%d%%", battery_state
.percentage
);
180 snprintf(buf_bat_time
, sizeof(buf_bat_time
), "%02d:%02d", battery_state
.time
.hours
, battery_state
.time
.minutes
);
182 get_text_size(bat1_font_desc
, &bat_percentage_height_ink
, &bat_percentage_height
, panel
->area
.height
, buf_bat_percentage
, strlen(buf_bat_percentage
));
183 get_text_size(bat2_font_desc
, &bat_time_height_ink
, &bat_time_height
, panel
->area
.height
, buf_bat_time
, strlen(buf_bat_time
));
185 if (panel_horizontal
) {
186 // panel horizonal => fixed height and posy
187 battery
->area
.posy
= panel
->area
.pix
.border
.width
+ panel
->area
.paddingy
;
188 battery
->area
.height
= panel
->area
.height
- (2 * battery
->area
.posy
);
191 // panel vertical => fixed width, height, posy and posx
192 battery
->area
.posy
= panel
->clock
.area
.posy
+ panel
->clock
.area
.height
+ panel
->area
.paddingx
;
193 battery
->area
.height
= (2 * battery
->area
.paddingxlr
) + (bat_time_height
+ bat_percentage_height
);
194 battery
->area
.posx
= panel
->area
.pix
.border
.width
+ panel
->area
.paddingy
;
195 battery
->area
.width
= panel
->area
.width
- (2 * panel
->area
.pix
.border
.width
) - (2 * panel
->area
.paddingy
);
198 battery
->bat1_posy
= (battery
->area
.height
- bat_percentage_height
) / 2;
199 battery
->bat1_posy
-= ((bat_time_height_ink
+ 2) / 2);
200 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;
204 void update_battery() {
207 int64_t energy_now
= 0, energy_full
= 0, current_now
= 0;
209 int8_t new_percentage
= 0;
211 fp
= fopen(path_status
, "r");
213 fgets(tmp
, sizeof tmp
, fp
);
216 battery_state
.state
= BATTERY_UNKNOWN
;
217 if(strcasecmp(tmp
, "Charging\n")==0) battery_state
.state
= BATTERY_CHARGING
;
218 if(strcasecmp(tmp
, "Discharging\n")==0) battery_state
.state
= BATTERY_DISCHARGING
;
219 if(strcasecmp(tmp
, "Full\n")==0) battery_state
.state
= BATTERY_FULL
;
220 if (battery_state
.state
== BATTERY_DISCHARGING
) {
225 fp
= fopen(path_energy_now
, "r");
227 fgets(tmp
, sizeof tmp
, fp
);
228 energy_now
= atoi(tmp
);
232 fp
= fopen(path_energy_full
, "r");
234 fgets(tmp
, sizeof tmp
, fp
);
235 energy_full
= atoi(tmp
);
239 fp
= fopen(path_current_now
, "r");
241 fgets(tmp
, sizeof tmp
, fp
);
242 current_now
= atoi(tmp
);
246 if(current_now
> 0) {
247 switch(battery_state
.state
) {
248 case BATTERY_CHARGING
:
249 seconds
= 3600 * (energy_full
- energy_now
) / current_now
;
251 case BATTERY_DISCHARGING
:
252 seconds
= 3600 * energy_now
/ current_now
;
260 battery_state
.time
.hours
= seconds
/ 3600;
261 seconds
-= 3600 * battery_state
.time
.hours
;
262 battery_state
.time
.minutes
= seconds
/ 60;
263 seconds
-= 60 * battery_state
.time
.minutes
;
264 battery_state
.time
.seconds
= seconds
;
267 new_percentage
= (energy_now
*100)/energy_full
;
269 if(battery_low_status
!= 0 && battery_low_status
== new_percentage
&& battery_state
.percentage
> new_percentage
) {
270 //printf("battery low, executing: %s\n", battery_low_cmd);
271 if (battery_low_cmd
) system(battery_low_cmd
);
274 battery_state
.percentage
= new_percentage
;
276 // clamp percentage to 100 in case battery is misreporting that its current charge is more than its max
277 if(battery_state
.percentage
> 100) {
278 battery_state
.percentage
= 100;
283 void draw_battery (void *obj
, cairo_t
*c
, int active
)
285 Battery
*battery
= obj
;
288 layout
= pango_cairo_create_layout (c
);
291 pango_layout_set_font_description(layout
, bat1_font_desc
);
292 pango_layout_set_width(layout
, battery
->area
.width
* PANGO_SCALE
);
293 pango_layout_set_alignment(layout
, PANGO_ALIGN_CENTER
);
294 pango_layout_set_text(layout
, buf_bat_percentage
, strlen(buf_bat_percentage
));
296 cairo_set_source_rgba(c
, battery
->font
.color
[0], battery
->font
.color
[1], battery
->font
.color
[2], battery
->font
.alpha
);
298 pango_cairo_update_layout(c
, layout
);
299 cairo_move_to(c
, 0, battery
->bat1_posy
);
300 pango_cairo_show_layout(c
, layout
);
302 pango_layout_set_font_description(layout
, bat2_font_desc
);
303 pango_layout_set_indent(layout
, 0);
304 pango_layout_set_text(layout
, buf_bat_time
, strlen(buf_bat_time
));
305 pango_layout_set_width(layout
, battery
->area
.width
* PANGO_SCALE
);
307 pango_cairo_update_layout(c
, layout
);
308 cairo_move_to(c
, 0, battery
->bat2_posy
);
309 pango_cairo_show_layout(c
, layout
);
311 g_object_unref(layout
);
315 void resize_battery(void *obj
)
317 Battery
*battery
= obj
;
319 int percentage_width
, time_width
, new_width
;
321 percentage_width
= time_width
= 0;
322 battery
->area
.redraw
= 1;
324 snprintf(buf_bat_percentage
, sizeof(buf_bat_percentage
), "%d%%", battery_state
.percentage
);
325 if(battery_state
.state
== BATTERY_FULL
) {
326 strcpy(buf_bat_time
, "Full");
328 snprintf(buf_bat_time
, sizeof(buf_bat_time
), "%02d:%02d", battery_state
.time
.hours
, battery_state
.time
.minutes
);
330 // vertical panel doen't adjust width
331 if (!panel_horizontal
) return;
336 pmap
= XCreatePixmap(server
.dsp
, server
.root_win
, battery
->area
.width
, battery
->area
.height
, server
.depth
);
338 cs
= cairo_xlib_surface_create(server
.dsp
, pmap
, server
.visual
, battery
->area
.width
, battery
->area
.height
);
339 c
= cairo_create(cs
);
340 layout
= pango_cairo_create_layout(c
);
343 pango_layout_set_font_description(layout
, bat1_font_desc
);
344 pango_layout_set_indent(layout
, 0);
345 pango_layout_set_text(layout
, buf_bat_percentage
, strlen(buf_bat_percentage
));
346 pango_layout_get_pixel_size(layout
, &percentage_width
, NULL
);
348 pango_layout_set_font_description(layout
, bat2_font_desc
);
349 pango_layout_set_indent(layout
, 0);
350 pango_layout_set_text(layout
, buf_bat_time
, strlen(buf_bat_time
));
351 pango_layout_get_pixel_size(layout
, &time_width
, NULL
);
353 if(percentage_width
> time_width
) new_width
= percentage_width
;
354 else new_width
= time_width
;
356 new_width
+= (2*battery
->area
.paddingxlr
) + (2*battery
->area
.pix
.border
.width
);
358 int old_width
= battery
->area
.width
;
360 Panel
*panel
= ((Area
*)obj
)->panel
;
361 battery
->area
.width
= new_width
+ 1;
362 battery
->area
.posx
= panel
->area
.width
- battery
->area
.width
- panel
->area
.paddingxlr
- panel
->area
.pix
.border
.width
;
363 if (panel
->clock
.area
.on_screen
)
364 battery
->area
.posx
-= (panel
->clock
.area
.width
+ panel
->area
.paddingx
);
366 if(new_width
> old_width
|| new_width
< (old_width
-6)) {
367 // refresh and resize other objects on panel
368 // we try to limit the number of refresh
369 // printf("battery_width %d, new_width %d\n", battery->area.width, new_width);
370 panel
->area
.resize
= 1;
371 systray
.area
.resize
= 1;
375 g_object_unref (layout
);
377 cairo_surface_destroy (cs
);
378 XFreePixmap (server
.dsp
, pmap
);