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polybar
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Add battery usage/charge in watts token %consumption%

This commit is contained in:
raidzero 2017-02-16 14:35:43 -07:00
parent bd8e748399
commit 93c425fdfe
2 changed files with 31 additions and 5 deletions
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3
include/modules/battery.hpp
View File

@ -42,6 +42,7 @@ namespace modules {
using state_reader = mutex_wrapper<value_reader<bool /* is_charging */>>;
using capacity_reader = mutex_wrapper<value_reader<int /* percentage */>>;
using rate_reader = mutex_wrapper<value_reader<unsigned long /* seconds */>>;
using consumption_reader = mutex_wrapper<value_reader<string /* watts */>>;
public:
explicit battery_module(const bar_settings&, string);
@ -57,6 +58,7 @@ namespace modules {
state current_state();
int current_percentage(state state);
string current_time();
string current_consumption();
void subthread();
private:
@ -76,6 +78,7 @@ namespace modules {
unique_ptr<state_reader> m_state_reader;
unique_ptr<capacity_reader> m_capacity_reader;
unique_ptr<rate_reader> m_rate_reader;
unique_ptr<consumption_reader> m_consumption_reader;
label_t m_label_charging;
label_t m_label_discharging;

33
src/modules/battery.cpp
View File

@ -30,7 +30,7 @@ namespace modules {
m_lastpoll = chrono::system_clock::now();
auto path_adapter = string_util::replace(PATH_ADAPTER, "%adapter%", m_conf.get(name(), "adapter", "ADP1"s)) + "/";
auto path_battery = string_util::replace(PATH_BATTERY, "%battery%", m_conf.get(name(), "battery", "BAT0"s)) + "/";
auto path_battery = string_util::replace(PATH_BATTERY, "%battery%", m_conf.get(name(), "battery", "BAT0"s)) + "/";
// Make state reader
if (file_util::exists((m_fstate = path_adapter + "online"))) {
@ -41,7 +41,7 @@ namespace modules {
} else {
throw module_error("No suitable way to get current charge state");
}
// Make capacity reader
if ((m_fcapnow = file_util::pick({path_battery + "charge_now", path_battery + "energy_now"})).empty()) {
throw module_error("No suitable way to get current capacity value");
@ -54,14 +54,14 @@ namespace modules {
auto cap_max = std::strtoul(file_util::contents(m_fcapfull).c_str(), nullptr, 10);
return math_util::percentage(cap_now, 0UL, cap_max);
});
// Make rate reader
if ((m_fvoltage = file_util::pick({path_battery + "voltage_now"})).empty()) {
throw module_error("No suitable way to get current voltage value");
} else if ((m_frate = file_util::pick({path_battery + "current_now", path_battery + "power_now"})).empty()) {
throw module_error("No suitable way to get current charge rate value");
}
m_rate_reader = make_unique<rate_reader>([this] {
unsigned long rate{std::strtoul(file_util::contents(m_frate).c_str(), nullptr, 10)};
unsigned long volt{std::strtoul(file_util::contents(m_fvoltage).c_str(), nullptr, 10) / 1000UL};
@ -81,6 +81,21 @@ namespace modules {
return 0UL;
});
// Make consumption reader
m_consumption_reader = make_unique<consumption_reader>([this] {
unsigned long current{std::strtoul(file_util::contents(m_frate).c_str(), nullptr, 10)};
unsigned long voltage{std::strtoul(file_util::contents(m_fvoltage).c_str(), nullptr, 10)};
float consumption = ((voltage / 1000.0) * (current / 1000.0)) / 1e6;
// convert to string with 2 decimmal places
string rtn(16, '\0'); // 16 should be plenty big. Cant see it needing more than 6/7..
auto written = std::snprintf(&rtn[0], rtn.size(), "%.2f", consumption);
rtn.resize(written);
return rtn;
});
// Load state and capacity level
m_state = current_state();
m_percentage = current_percentage(m_state);
@ -201,7 +216,8 @@ namespace modules {
if (label) {
label->reset_tokens();
label->replace_token("%percentage%", to_string(m_percentage));
label->replace_token("%consumption%", current_consumption());
if (m_state != battery_module::state::FULL && !m_timeformat.empty()) {
label->replace_token("%time%", current_time());
}
@ -270,6 +286,13 @@ namespace modules {
return percentage;
}
/**
* Get the current power consumption
*/
string battery_module::current_consumption() {
return read(*m_consumption_reader);
}
/**
* Get estimate of remaining time until fully dis-/charged
*/