Waybar/src/modules/hyprland/language.cpp

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#include "modules/hyprland/language.hpp"
#include <spdlog/spdlog.h>
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#include <xkbcommon/xkbcommon.h>
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#include <xkbcommon/xkbregistry.h>
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#include <util/sanitize_str.hpp>
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#include "modules/hyprland/backend.hpp"
namespace waybar::modules::hyprland {
Language::Language(const std::string& id, const Bar& bar, const Json::Value& config)
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: ALabel(config, "language", id, "{}", 0, true), bar_(bar) {
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modulesReady = true;
if (!gIPC.get()) {
gIPC = std::make_unique<IPC>();
}
// get the active layout when open
initLanguage();
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label_.hide();
ALabel::update();
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// register for hyprland ipc
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gIPC->registerForIPC("activelayout", this);
}
Language::~Language() {
gIPC->unregisterForIPC(this);
// wait for possible event handler to finish
std::lock_guard<std::mutex> lg(mutex_);
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}
auto Language::update() -> void {
std::lock_guard<std::mutex> lg(mutex_);
if (!format_.empty()) {
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label_.show();
label_.set_markup(layoutName_);
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} else {
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label_.hide();
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}
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ALabel::update();
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}
void Language::onEvent(const std::string& ev) {
std::lock_guard<std::mutex> lg(mutex_);
auto layoutName = ev.substr(ev.find_last_of(',') + 1);
auto kbName = ev.substr(0, ev.find_last_of(','));
kbName = kbName.substr(kbName.find_first_of('>') + 2);
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if (config_.isMember("keyboard-name") && kbName != config_["keyboard-name"].asString())
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return; // ignore
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const auto briefName = getShortFrom(layoutName);
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if (config_.isMember("format-" + briefName)) {
const auto propName = "format-" + briefName;
layoutName = fmt::format(format_, config_[propName].asString());
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} else {
layoutName = fmt::format(format_, layoutName);
}
layoutName = waybar::util::sanitize_string(layoutName);
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if (layoutName == layoutName_) return;
layoutName_ = layoutName;
spdlog::debug("hyprland language onevent with {}", layoutName);
dp.emit();
}
void Language::initLanguage() {
const auto inputDevices = gIPC->getSocket1Reply("devices");
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const auto kbName = config_["keyboard-name"].asString();
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try {
auto searcher = kbName.empty()
? inputDevices
: inputDevices.substr(inputDevices.find(kbName) + kbName.length());
searcher = searcher.substr(searcher.find("keymap:") + 8);
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searcher = searcher.substr(0, searcher.find_first_of("\n\t"));
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auto layoutName = std::string{};
const auto briefName = getShortFrom(searcher);
if (config_.isMember("format-" + briefName)) {
const auto propName = "format-" + briefName;
layoutName = fmt::format(format_, config_[propName].asString());
} else {
layoutName = fmt::format(format_, searcher);
}
layoutName = waybar::util::sanitize_string(layoutName);
layoutName_ = layoutName;
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spdlog::debug("hyprland language initLanguage found {}", layoutName_);
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dp.emit();
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} catch (std::exception& e) {
spdlog::error("hyprland language initLanguage failed with {}", e.what());
}
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}
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std::string Language::getShortFrom(const std::string& fullName) {
const auto CONTEXT = rxkb_context_new(RXKB_CONTEXT_LOAD_EXOTIC_RULES);
rxkb_context_parse_default_ruleset(CONTEXT);
std::string foundName = "";
rxkb_layout* layout = rxkb_layout_first(CONTEXT);
while (layout) {
std::string nameOfLayout = rxkb_layout_get_description(layout);
if (nameOfLayout != fullName) {
layout = rxkb_layout_next(layout);
continue;
}
std::string briefName = rxkb_layout_get_brief(layout);
rxkb_context_unref(CONTEXT);
return briefName;
}
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rxkb_context_unref(CONTEXT);
return "";
}
} // namespace waybar::modules::hyprland