mirror of https://github.com/polybar/polybar.git
85 lines
2.4 KiB
C++
85 lines
2.4 KiB
C++
#include "modules/backlight.hpp"
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#include "drawtypes/label.hpp"
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#include "drawtypes/progressbar.hpp"
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#include "drawtypes/ramp.hpp"
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#include "utils/file.hpp"
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#include "modules/meta/base.inl"
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POLYBAR_NS
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namespace modules {
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template class module<backlight_module>;
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void backlight_module::brightness_handle::filepath(const string& path) {
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if (!file_util::exists(path)) {
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throw module_error("The file '" + path + "' does not exist");
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}
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m_path = path;
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}
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float backlight_module::brightness_handle::read() const {
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return std::strtof(file_util::contents(m_path).c_str(), nullptr);
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}
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backlight_module::backlight_module(const bar_settings& bar, string name_)
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: inotify_module<backlight_module>(bar, move(name_)) {
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auto card = m_conf.get(name(), "card");
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// Add formats and elements
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m_formatter->add(DEFAULT_FORMAT, TAG_LABEL, {TAG_LABEL, TAG_BAR, TAG_RAMP});
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if (m_formatter->has(TAG_LABEL)) {
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m_label = load_optional_label(m_conf, name(), TAG_LABEL, "%percentage%");
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}
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if (m_formatter->has(TAG_BAR)) {
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m_progressbar = load_progressbar(m_bar, m_conf, name(), TAG_BAR);
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}
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if (m_formatter->has(TAG_RAMP)) {
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m_ramp = load_ramp(m_conf, name(), TAG_RAMP);
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}
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// Build path to the file where the current/maximum brightness value is located
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m_val.filepath(string_util::replace(PATH_BACKLIGHT_VAL, "%card%", card));
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m_max.filepath(string_util::replace(PATH_BACKLIGHT_MAX, "%card%", card));
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// Add inotify watch
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watch(string_util::replace(PATH_BACKLIGHT_VAL, "%card%", card));
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}
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void backlight_module::idle() {
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sleep(75ms);
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}
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bool backlight_module::on_event(inotify_event* event) {
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if (event != nullptr) {
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m_log.trace("%s: %s", name(), event->filename);
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}
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m_percentage = static_cast<int>(m_val.read() / m_max.read() * 100.0f + 0.5f);
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if (m_label) {
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m_label->reset_tokens();
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m_label->replace_token("%percentage%", to_string(m_percentage) + "%");
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}
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return true;
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}
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bool backlight_module::build(builder* builder, const string& tag) const {
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if (tag == TAG_BAR) {
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builder->node(m_progressbar->output(m_percentage));
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} else if (tag == TAG_RAMP) {
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builder->node(m_ramp->get_by_percentage(m_percentage));
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} else if (tag == TAG_LABEL) {
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builder->node(m_label);
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} else {
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return false;
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}
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return true;
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}
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}
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POLYBAR_NS_END
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