tint2/src/battery/battery.c

468 lines
15 KiB
C

/**************************************************************************
*
* Tint2 : Generic battery
*
* Copyright (C) 2009-2015 Sebastian Reichel <sre@ring0.de>
*
* 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 "panel.h"
#include "battery.h"
#include "timer.h"
#include "common.h"
gboolean bat1_has_font;
PangoFontDescription *bat1_font_desc;
gboolean bat2_has_font;
PangoFontDescription *bat2_font_desc;
char *bat1_format;
char *bat2_format;
struct BatteryState battery_state;
gboolean battery_enabled;
gboolean battery_tooltip_enabled;
int percentage_hide;
static timeout *battery_timeout;
#define BATTERY_BUF_SIZE 256
static char buf_bat_line1[BATTERY_BUF_SIZE];
static char buf_bat_line2[BATTERY_BUF_SIZE];
int8_t battery_low_status;
gboolean battery_low_cmd_sent;
gboolean battery_full_cmd_sent;
char *ac_connected_cmd;
char *ac_disconnected_cmd;
char *battery_low_cmd;
char *battery_full_cmd;
char *battery_lclick_command;
char *battery_mclick_command;
char *battery_rclick_command;
char *battery_uwheel_command;
char *battery_dwheel_command;
gboolean battery_found;
char *battery_sys_prefix = (char *)"";
void battery_init_fonts();
char *battery_get_tooltip(void *obj);
int battery_compute_desired_size(void *obj);
void battery_dump_geometry(void *obj, int indent);
void default_battery()
{
battery_enabled = FALSE;
battery_tooltip_enabled = TRUE;
battery_found = FALSE;
percentage_hide = 101;
battery_low_cmd_sent = FALSE;
battery_full_cmd_sent = FALSE;
battery_timeout = NULL;
bat1_has_font = FALSE;
bat1_font_desc = NULL;
bat1_format = NULL;
bat2_has_font = FALSE;
bat2_font_desc = NULL;
bat2_format = NULL;
ac_connected_cmd = NULL;
ac_disconnected_cmd = NULL;
battery_low_cmd = NULL;
battery_full_cmd = NULL;
battery_lclick_command = NULL;
battery_mclick_command = NULL;
battery_rclick_command = NULL;
battery_uwheel_command = NULL;
battery_dwheel_command = NULL;
battery_state.percentage = 0;
battery_state.time.hours = 0;
battery_state.time.minutes = 0;
battery_state.time.seconds = 0;
battery_state.state = BATTERY_UNKNOWN;
}
void cleanup_battery()
{
pango_font_description_free(bat1_font_desc);
bat1_font_desc = NULL;
pango_font_description_free(bat2_font_desc);
bat2_font_desc = NULL;
free(battery_low_cmd);
battery_low_cmd = NULL;
free(battery_full_cmd);
battery_full_cmd = NULL;
free(bat1_format);
bat1_format = NULL;
free(bat2_format);
bat2_format = NULL;
free(battery_lclick_command);
battery_lclick_command = NULL;
free(battery_mclick_command);
battery_mclick_command = NULL;
free(battery_rclick_command);
battery_rclick_command = NULL;
free(battery_uwheel_command);
battery_uwheel_command = NULL;
free(battery_dwheel_command);
battery_dwheel_command = NULL;
free(ac_connected_cmd);
ac_connected_cmd = NULL;
free(ac_disconnected_cmd);
ac_disconnected_cmd = NULL;
stop_timeout(battery_timeout);
battery_timeout = NULL;
battery_found = FALSE;
battery_os_free();
}
// Appends addendum to dest, and does not allow dest to grow over limit (including NULL terminator).
char *strnappend(char *dest, const char *addendum, size_t limit)
{
char *tmp = strdup(dest);
// Actually concatenate them.
snprintf(dest, limit, "%s%s", tmp, addendum);
free(tmp);
return dest;
}
void battery_update_text(char *dest, char *format)
{
if (!battery_enabled || !dest || !format)
return;
// We want to loop over the format specifier, replacing any known symbols with our battery data.
// First, erase anything already stored in the buffer.
// This ensures the string will always be null-terminated.
bzero(dest, BATTERY_BUF_SIZE);
for (size_t o = 0; o < strlen(format); o++) {
char buf[BATTERY_BUF_SIZE];
bzero(buf, BATTERY_BUF_SIZE);
char *c = &format[o];
// Format specification:
// %s : State (charging, discharging, full, unknown)
// %m : Minutes left (estimated).
// %h : Hours left (estimated).
// %t : Time left. This is equivalent to the old behaviour; i.e. "(plugged in)" or "hrs:mins" otherwise.
// %p : Percentage left. Includes the % sign.
if (*c == '%') {
c++;
o++; // Skip the format control character.
switch (*c) {
case 's':
// Append the appropriate status message to the string.
strnappend(dest,
(battery_state.state == BATTERY_CHARGING)
? "Charging"
: (battery_state.state == BATTERY_DISCHARGING)
? "Discharging"
: (battery_state.state == BATTERY_FULL)
? "Full"
: "Unknown",
BATTERY_BUF_SIZE);
break;
case 'm':
snprintf(buf, sizeof(buf), "%02d", battery_state.time.minutes);
strnappend(dest, buf, BATTERY_BUF_SIZE);
break;
case 'h':
snprintf(buf, sizeof(buf), "%02d", battery_state.time.hours);
strnappend(dest, buf, BATTERY_BUF_SIZE);
break;
case 'p':
snprintf(buf, sizeof(buf), "%d%%", battery_state.percentage);
strnappend(dest, buf, BATTERY_BUF_SIZE);
break;
case 't':
if (battery_state.state == BATTERY_FULL) {
snprintf(buf, sizeof(buf), "Full");
strnappend(dest, buf, BATTERY_BUF_SIZE);
} else {
snprintf(buf, sizeof(buf), "%02d:%02d", battery_state.time.hours, battery_state.time.minutes);
strnappend(dest, buf, BATTERY_BUF_SIZE);
}
break;
case '%':
case '\0':
strnappend(dest, "%", BATTERY_BUF_SIZE);
break;
default:
fprintf(stderr, "tint2: Battery: unrecognised format specifier '%%%c'.\n", *c);
buf[0] = *c;
strnappend(dest, buf, BATTERY_BUF_SIZE);
}
} else {
buf[0] = *c;
strnappend(dest, buf, BATTERY_BUF_SIZE);
}
}
}
void init_battery()
{
if (!battery_enabled)
return;
battery_found = battery_os_init();
battery_timeout = add_timeout(10, 30000, update_battery_tick, 0, &battery_timeout);
update_battery();
}
void reinit_battery()
{
battery_os_free();
battery_found = battery_os_init();
update_battery();
}
void init_battery_panel(void *p)
{
Panel *panel = (Panel *)p;
Battery *battery = &panel->battery;
if (!battery_enabled)
return;
battery_init_fonts();
if (!battery->area.bg)
battery->area.bg = &g_array_index(backgrounds, Background, 0);
battery->area.parent = p;
battery->area.panel = p;
snprintf(battery->area.name, sizeof(battery->area.name), "Battery");
battery->area._draw_foreground = draw_battery;
battery->area.size_mode = LAYOUT_FIXED;
battery->area._resize = resize_battery;
battery->area._compute_desired_size = battery_compute_desired_size;
battery->area._is_under_mouse = full_width_area_is_under_mouse;
battery->area.on_screen = TRUE;
battery->area.resize_needed = 1;
battery->area.has_mouse_over_effect =
panel_config.mouse_effects && (battery_lclick_command || battery_mclick_command || battery_rclick_command ||
battery_uwheel_command || battery_dwheel_command);
battery->area.has_mouse_press_effect = battery->area.has_mouse_over_effect;
if (battery_tooltip_enabled)
battery->area._get_tooltip_text = battery_get_tooltip;
instantiate_area_gradients(&battery->area);
if (!bat1_format && !bat2_format) {
bat1_format = strdup("%p");
bat2_format = strdup("%t");
}
}
void battery_init_fonts()
{
if (!bat1_font_desc) {
bat1_font_desc = pango_font_description_from_string(get_default_font());
pango_font_description_set_size(bat1_font_desc, pango_font_description_get_size(bat1_font_desc) - PANGO_SCALE);
}
if (!bat2_font_desc) {
bat2_font_desc = pango_font_description_from_string(get_default_font());
pango_font_description_set_size(bat2_font_desc, pango_font_description_get_size(bat2_font_desc) - PANGO_SCALE);
}
}
void battery_default_font_changed()
{
if (!battery_enabled)
return;
if (bat1_has_font && bat2_has_font)
return;
if (!bat1_has_font) {
pango_font_description_free(bat1_font_desc);
bat1_font_desc = NULL;
}
if (!bat2_has_font) {
pango_font_description_free(bat2_font_desc);
bat2_font_desc = NULL;
}
battery_init_fonts();
for (int i = 0; i < num_panels; i++) {
panels[i].battery.area.resize_needed = TRUE;
schedule_redraw(&panels[i].battery.area);
}
schedule_panel_redraw();
}
void update_battery_tick(void *arg)
{
if (!battery_enabled)
return;
gboolean old_found = battery_found;
int old_percentage = battery_state.percentage;
gboolean old_ac_connected = battery_state.ac_connected;
int16_t old_hours = battery_state.time.hours;
int8_t old_minutes = battery_state.time.minutes;
if (!battery_found) {
init_battery();
old_ac_connected = battery_state.ac_connected;
}
if (update_battery() != 0) {
// Try to reconfigure on failed update
init_battery();
}
if (old_ac_connected != battery_state.ac_connected) {
if (battery_state.ac_connected)
tint_exec_no_sn(ac_connected_cmd);
else
tint_exec_no_sn(ac_disconnected_cmd);
}
if (battery_state.percentage < battery_low_status && battery_state.state == BATTERY_DISCHARGING &&
!battery_low_cmd_sent) {
tint_exec_no_sn(battery_low_cmd);
battery_low_cmd_sent = TRUE;
}
if (battery_state.percentage > battery_low_status && battery_state.state == BATTERY_CHARGING &&
battery_low_cmd_sent) {
battery_low_cmd_sent = FALSE;
}
if ((battery_state.percentage >= 100 || battery_state.state == BATTERY_FULL) &&
!battery_full_cmd_sent) {
tint_exec_no_sn(battery_full_cmd);
battery_full_cmd_sent = TRUE;
}
if (battery_state.percentage < 100 && battery_state.state != BATTERY_FULL &&
battery_full_cmd_sent) {
battery_full_cmd_sent = FALSE;
}
for (int i = 0; i < num_panels; i++) {
// Show/hide if needed
if (!battery_found) {
hide(&panels[i].battery.area);
} else {
if (battery_state.percentage >= percentage_hide)
hide(&panels[i].battery.area);
else
show(&panels[i].battery.area);
}
// Redraw if needed
if (panels[i].battery.area.on_screen) {
if (old_found != battery_found || old_percentage != battery_state.percentage ||
old_hours != battery_state.time.hours || old_minutes != battery_state.time.minutes) {
panels[i].battery.area.resize_needed = TRUE;
schedule_panel_redraw();
}
}
}
}
int update_battery()
{
// Reset
battery_state.state = BATTERY_UNKNOWN;
battery_state.percentage = 0;
battery_state.ac_connected = FALSE;
battery_state_set_time(&battery_state, 0);
int err = battery_os_update(&battery_state);
// Clamp percentage to 100 in case battery is misreporting that its current charge is more than its max
if (battery_state.percentage > 100) {
battery_state.percentage = 100;
}
battery_update_text(buf_bat_line1, bat1_format);
if (bat2_format != 0) {
battery_update_text(buf_bat_line2, bat2_format);
}
return err;
}
int battery_compute_desired_size(void *obj)
{
Battery *battery = (Battery *)obj;
return text_area_compute_desired_size(&battery->area, buf_bat_line1, buf_bat_line2, bat1_font_desc, bat2_font_desc);
}
gboolean resize_battery(void *obj)
{
Battery *battery = (Battery *)obj;
return resize_text_area(&battery->area,
buf_bat_line1,
buf_bat_line2,
bat1_font_desc,
bat2_font_desc,
&battery->bat1_posy,
&battery->bat2_posy);
}
void draw_battery(void *obj, cairo_t *c)
{
Battery *battery = (Battery *)obj;
draw_text_area(&battery->area,
c,
buf_bat_line1,
buf_bat_line2,
bat1_font_desc,
bat2_font_desc,
battery->bat1_posy,
battery->bat2_posy,
&battery->font_color);
}
void battery_dump_geometry(void *obj, int indent)
{
Battery *battery = (Battery *)obj;
fprintf(stderr, "tint2: %*sText 1: y = %d, text = %s\n", indent, "", battery->bat1_posy, buf_bat_line1);
fprintf(stderr, "tint2: %*sText 2: y = %d, text = %s\n", indent, "", battery->bat2_posy, buf_bat_line2);
}
char *battery_get_tooltip(void *obj)
{
return battery_os_tooltip();
}
void battery_action(void *obj, int button, int x, int y, Time time)
{
char *command = NULL;
switch (button) {
case 1:
command = battery_lclick_command;
break;
case 2:
command = battery_mclick_command;
break;
case 3:
command = battery_rclick_command;
break;
case 4:
command = battery_uwheel_command;
break;
case 5:
command = battery_dwheel_command;
break;
}
tint_exec(command, NULL, NULL, time, obj, x, y);
}