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polybar/include/modules/battery.hpp
2016-10-10 14:52:57 +02:00

242 lines
8.1 KiB
C++

#pragma once
#include "config.hpp"
#include "drawtypes/animation.hpp"
#include "drawtypes/label.hpp"
#include "drawtypes/progressbar.hpp"
#include "drawtypes/ramp.hpp"
#include "modules/meta.hpp"
#include "utils/file.hpp"
#include "utils/inotify.hpp"
#include "utils/string.hpp"
LEMONBUDDY_NS
namespace modules {
class battery_module : public inotify_module<battery_module> {
public:
using inotify_module::inotify_module;
void setup() {
// Load configuration values {{{
m_battery = m_conf.get<string>(name(), "battery", "BAT0");
m_adapter = m_conf.get<string>(name(), "adapter", "ADP1");
m_fullat = m_conf.get<int>(name(), "full_at", 100);
m_path_capacity = string_util::replace(PATH_BATTERY_CAPACITY, "%battery%", m_battery);
m_path_adapter = string_util::replace(PATH_ADAPTER_STATUS, "%adapter%", m_adapter);
m_state = STATE_UNKNOWN;
m_percentage = 0;
// }}}
// Validate paths {{{
if (!file_util::exists(m_path_capacity))
throw module_error("battery_module: The file '" + m_path_capacity + "' does not exist");
if (!file_util::exists(m_path_adapter))
throw module_error("battery_module: The file '" + m_path_adapter + "' does not exist");
// }}}
// Add formats and elements {{{
m_formatter->add(FORMAT_CHARGING, TAG_LABEL_CHARGING,
{TAG_BAR_CAPACITY, TAG_RAMP_CAPACITY, TAG_ANIMATION_CHARGING, TAG_LABEL_CHARGING});
m_formatter->add(FORMAT_DISCHARGING, TAG_LABEL_DISCHARGING,
{TAG_BAR_CAPACITY, TAG_RAMP_CAPACITY, TAG_LABEL_DISCHARGING});
m_formatter->add(
FORMAT_FULL, TAG_LABEL_FULL, {TAG_BAR_CAPACITY, TAG_RAMP_CAPACITY, TAG_LABEL_FULL});
if (m_formatter->has(TAG_ANIMATION_CHARGING, FORMAT_CHARGING))
m_animation_charging = get_config_animation(m_conf, name(), TAG_ANIMATION_CHARGING);
if (m_formatter->has(TAG_BAR_CAPACITY))
m_bar_capacity = get_config_bar(m_bar, m_conf, name(), TAG_BAR_CAPACITY);
if (m_formatter->has(TAG_RAMP_CAPACITY))
m_ramp_capacity = get_config_ramp(m_conf, name(), TAG_RAMP_CAPACITY);
if (m_formatter->has(TAG_LABEL_CHARGING, FORMAT_CHARGING)) {
m_label_charging =
get_optional_config_label(m_conf, name(), TAG_LABEL_CHARGING, "%percentage%");
m_label_charging_tokenized = m_label_charging->clone();
}
if (m_formatter->has(TAG_LABEL_DISCHARGING, FORMAT_DISCHARGING)) {
m_label_discharging =
get_optional_config_label(m_conf, name(), TAG_LABEL_DISCHARGING, "%percentage%");
m_label_discharging_tokenized = m_label_discharging->clone();
}
if (m_formatter->has(TAG_LABEL_FULL, FORMAT_FULL)) {
m_label_full = get_optional_config_label(m_conf, name(), TAG_LABEL_FULL, "%percentage%");
m_label_full_tokenized = m_label_full->clone();
}
// }}}
// Create inotify watches {{{
watch(m_path_capacity, IN_ACCESS);
watch(m_path_adapter, IN_ACCESS);
// }}}
}
void start() {
m_threads.emplace_back(thread(&battery_module::subthread_routine, this));
inotify_module::start();
}
bool on_event(inotify_event* event) {
if (event != nullptr)
m_log.trace("%s: %s", name(), event->filename);
auto status = file_util::get_contents(m_path_adapter);
if (status.empty()) {
m_log.err("%s: Failed to read '%s'", name(), m_path_adapter);
return false;
}
auto capacity = file_util::get_contents(m_path_capacity);
if (capacity.empty()) {
m_log.err("%s: Failed to read '%s'", name(), m_path_capacity);
return false;
}
int percentage = math_util::cap<float>(std::atof(capacity.c_str()), 0, 100) + 0.5;
int state = STATE_UNKNOWN;
switch (status[0]) {
case '0':
state = STATE_DISCHARGING;
break;
case '1':
state = STATE_CHARGING;
break;
}
if (state == STATE_CHARGING) {
if (percentage >= m_fullat)
percentage = 100;
if (percentage == 100)
state = STATE_FULL;
}
// check for nullptr since we don't want to ignore the update for the warmup run
if (event != nullptr && m_state == state && m_percentage == percentage) {
m_log.trace("%s: Ignore update since values are unchanged", name());
return false;
}
if (m_label_charging_tokenized) {
m_label_charging_tokenized->m_text = m_label_charging->m_text;
m_label_charging_tokenized->replace_token("%percentage%", to_string(percentage) + "%");
}
if (m_label_discharging_tokenized) {
m_label_discharging_tokenized->m_text = m_label_discharging->m_text;
m_label_discharging_tokenized->replace_token("%percentage%", to_string(percentage) + "%");
}
if (m_label_full_tokenized) {
m_label_full_tokenized->m_text = m_label_full->m_text;
m_label_full_tokenized->replace_token("%percentage%", to_string(percentage) + "%");
}
m_state = state;
m_percentage = percentage;
return true;
}
string get_format() {
if (m_state == STATE_FULL)
return FORMAT_FULL;
else if (m_state == STATE_CHARGING)
return FORMAT_CHARGING;
else
return FORMAT_DISCHARGING;
}
bool build(builder* builder, string tag) {
if (tag == TAG_ANIMATION_CHARGING)
builder->node(m_animation_charging->get());
else if (tag == TAG_BAR_CAPACITY) {
builder->node(m_bar_capacity->output(m_percentage));
} else if (tag == TAG_RAMP_CAPACITY)
builder->node(m_ramp_capacity->get_by_percentage(m_percentage));
else if (tag == TAG_LABEL_CHARGING)
builder->node(m_label_charging_tokenized);
else if (tag == TAG_LABEL_DISCHARGING)
builder->node(m_label_discharging_tokenized);
else if (tag == TAG_LABEL_FULL)
builder->node(m_label_full_tokenized);
else
return false;
return true;
}
protected:
void subthread_routine() {
this_thread::yield();
chrono::duration<double> dur = 1s;
if (m_animation_charging)
dur = chrono::duration<double>(float(m_animation_charging->framerate()) / 1000.0f);
int i = 0;
const int poll_seconds = m_conf.get<float>(name(), "poll_interval", 3.0f) / dur.count();
while (enabled()) {
// TODO(jaagr): Keep track of when the values were last read to determine
// if we need to trigger the event manually or not.
if (poll_seconds > 0 && (++i % poll_seconds) == 0) {
// Trigger an inotify event in case the underlying filesystem doesn't
m_log.trace("%s: Poll battery capacity", name());
file_util::get_contents(m_path_capacity);
i = 0;
}
if (m_state == STATE_CHARGING)
broadcast();
sleep(dur);
}
m_log.trace("%s: Reached end of battery subthread", name());
}
private:
static const int STATE_UNKNOWN = 1;
static const int STATE_CHARGING = 2;
static const int STATE_DISCHARGING = 3;
static const int STATE_FULL = 4;
static constexpr auto FORMAT_CHARGING = "format-charging";
static constexpr auto FORMAT_DISCHARGING = "format-discharging";
static constexpr auto FORMAT_FULL = "format-full";
static constexpr auto TAG_ANIMATION_CHARGING = "<animation-charging>";
static constexpr auto TAG_BAR_CAPACITY = "<bar-capacity>";
static constexpr auto TAG_RAMP_CAPACITY = "<ramp-capacity>";
static constexpr auto TAG_LABEL_CHARGING = "<label-charging>";
static constexpr auto TAG_LABEL_DISCHARGING = "<label-discharging>";
static constexpr auto TAG_LABEL_FULL = "<label-full>";
animation_t m_animation_charging;
ramp_t m_ramp_capacity;
progressbar_t m_bar_capacity;
label_t m_label_charging;
label_t m_label_charging_tokenized;
label_t m_label_discharging;
label_t m_label_discharging_tokenized;
label_t m_label_full;
label_t m_label_full_tokenized;
string m_battery;
string m_adapter;
string m_path_capacity;
string m_path_adapter;
int m_state;
int m_percentage;
int m_fullat;
};
}
LEMONBUDDY_NS_END