56b4657c3f
Better implementation for showing backlight information. This one is using the XRandR extension instead of reading from the raw file handlers.
101 lines
2.7 KiB
C++
101 lines
2.7 KiB
C++
#pragma once
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#include "config.hpp"
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#include "components/config.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 "modules/meta.hpp"
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LEMONBUDDY_NS
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namespace modules {
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struct brightness_handle {
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void filepath(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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m_path = path;
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}
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float read() const {
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return std::strtof(file_util::get_contents(m_path).c_str(), 0);
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}
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private:
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string m_path;
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};
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class backlight_module : public inotify_module<backlight_module> {
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public:
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using inotify_module::inotify_module;
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void setup() {
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// Load configuration values
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auto card = m_conf.get<string>(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 = get_optional_config_label(m_conf, name(), TAG_LABEL, "%percentage%");
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if (m_formatter->has(TAG_BAR))
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m_progressbar = get_config_bar(m_bar, m_conf, name(), TAG_BAR);
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if (m_formatter->has(TAG_RAMP))
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m_ramp = get_config_ramp(m_conf, name(), TAG_RAMP);
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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 idle() {
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sleep(75ms);
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}
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bool 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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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 build(builder* builder, 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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return true;
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}
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private:
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static constexpr auto TAG_LABEL = "<label>";
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static constexpr auto TAG_BAR = "<bar>";
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static constexpr auto TAG_RAMP = "<ramp>";
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ramp_t m_ramp;
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label_t m_label;
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progressbar_t m_progressbar;
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brightness_handle m_val;
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brightness_handle m_max;
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int m_percentage = 0;
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};
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}
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LEMONBUDDY_NS_END
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