waybar/src/modules/sway/language.cpp

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#include "modules/sway/language.hpp"
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#include <fmt/core.h>
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#include <json/json.h>
#include <spdlog/spdlog.h>
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#include <xkbcommon/xkbregistry.h>
#include <cstring>
#include <string>
#include <vector>
#include "modules/sway/ipc/ipc.hpp"
#include "util/string.hpp"
namespace waybar::modules::sway {
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const std::string Language::XKB_LAYOUT_NAMES_KEY = "xkb_layout_names";
const std::string Language::XKB_ACTIVE_LAYOUT_NAME_KEY = "xkb_active_layout_name";
Language::Language(const std::string& id, const Json::Value& config)
: ALabel(config, "language", id, "{}", 0, true) {
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is_variant_displayed = format_.find("{variant}") != std::string::npos;
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if (config.isMember("tooltip-format")) {
tooltip_format_ = config["tooltip-format"].asString();
}
ipc_.subscribe(R"(["input"])");
ipc_.signal_event.connect(sigc::mem_fun(*this, &Language::onEvent));
ipc_.signal_cmd.connect(sigc::mem_fun(*this, &Language::onCmd));
ipc_.sendCmd(IPC_GET_INPUTS);
// Launch worker
ipc_.setWorker([this] {
try {
ipc_.handleEvent();
} catch (const std::exception& e) {
spdlog::error("Language: {}", e.what());
}
});
dp.emit();
}
void Language::onCmd(const struct Ipc::ipc_response& res) {
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if (res.type != static_cast<uint32_t>(IPC_GET_INPUTS)) {
return;
}
try {
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std::lock_guard<std::mutex> lock(mutex_);
auto payload = parser_.parse(res.payload);
std::vector<std::string> used_layouts;
// Display current layout of a device with a maximum count of layouts, expecting that all will
// be OK
Json::ArrayIndex max_id = 0, max = 0;
for (Json::ArrayIndex i = 0; i < payload.size(); i++) {
auto size = payload[i][XKB_LAYOUT_NAMES_KEY].size();
if (size > max) {
max = size;
max_id = i;
}
}
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for (const auto& layout : payload[max_id][XKB_LAYOUT_NAMES_KEY]) {
used_layouts.push_back(layout.asString());
}
init_layouts_map(used_layouts);
set_current_layout(payload[max_id][XKB_ACTIVE_LAYOUT_NAME_KEY].asString());
dp.emit();
} catch (const std::exception& e) {
spdlog::error("Language: {}", e.what());
}
}
void Language::onEvent(const struct Ipc::ipc_response& res) {
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if (res.type != static_cast<uint32_t>(IPC_EVENT_INPUT)) {
return;
}
try {
std::lock_guard<std::mutex> lock(mutex_);
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auto payload = parser_.parse(res.payload)["input"];
if (payload["type"].asString() == "keyboard") {
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set_current_layout(payload[XKB_ACTIVE_LAYOUT_NAME_KEY].asString());
}
dp.emit();
} catch (const std::exception& e) {
spdlog::error("Language: {}", e.what());
}
}
auto Language::update() -> void {
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auto display_layout = trim(fmt::format(format_,
fmt::arg("short", layout_.short_name),
fmt::arg("long", layout_.full_name),
fmt::arg("variant", layout_.variant)));
label_.set_markup(display_layout);
if (tooltipEnabled()) {
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if (tooltip_format_ != "") {
auto tooltip_display_layout = trim(fmt::format(tooltip_format_,
fmt::arg("short", layout_.short_name),
fmt::arg("long", layout_.full_name),
fmt::arg("variant", layout_.variant)));
label_.set_tooltip_markup(tooltip_display_layout);
} else {
label_.set_tooltip_markup(display_layout);
}
}
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event_box_.show();
// Call parent update
ALabel::update();
}
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auto Language::set_current_layout(std::string current_layout) -> void {
layout_ = layouts_map_[current_layout];
}
auto Language::init_layouts_map(const std::vector<std::string>& used_layouts) -> void {
std::map<std::string, std::vector<Layout*>> found_by_short_names;
auto layout = xkb_context_.next_layout();
for (; layout != nullptr; layout = xkb_context_.next_layout()) {
if (std::find(used_layouts.begin(), used_layouts.end(), layout->full_name) ==
used_layouts.end()) {
continue;
}
if (!is_variant_displayed) {
auto short_name = layout->short_name;
if (found_by_short_names.count(short_name) > 0) {
found_by_short_names[short_name].push_back(layout);
} else {
found_by_short_names[short_name] = {layout};
}
}
layouts_map_.emplace(layout->full_name, *layout);
}
if (is_variant_displayed || found_by_short_names.size() == 0) {
return;
}
std::map<std::string, int> short_name_to_number_map;
for (const auto& used_layout_name : used_layouts) {
auto used_layout = &layouts_map_.find(used_layout_name)->second;
auto layouts_with_same_name_list = found_by_short_names[used_layout->short_name];
spdlog::info("SIZE: " + std::to_string(layouts_with_same_name_list.size()));
if (layouts_with_same_name_list.size() < 2) {
continue;
}
if (short_name_to_number_map.count(used_layout->short_name) == 0) {
short_name_to_number_map[used_layout->short_name] = 1;
}
used_layout->short_name =
used_layout->short_name + std::to_string(short_name_to_number_map[used_layout->short_name]++);
}
}
Language::XKBContext::XKBContext() {
context_ = rxkb_context_new(RXKB_CONTEXT_NO_DEFAULT_INCLUDES);
rxkb_context_include_path_append_default(context_);
rxkb_context_parse_default_ruleset(context_);
}
auto Language::XKBContext::next_layout() -> Layout* {
if (xkb_layout_ == nullptr) {
xkb_layout_ = rxkb_layout_first(context_);
} else {
xkb_layout_ = rxkb_layout_next(xkb_layout_);
}
if (xkb_layout_ == nullptr) {
return nullptr;
}
auto description = std::string(rxkb_layout_get_description(xkb_layout_));
auto name = std::string(rxkb_layout_get_name(xkb_layout_));
auto variant_ = rxkb_layout_get_variant(xkb_layout_);
std::string variant = variant_ == nullptr ? "" : std::string(variant_);
layout_ = new Layout{description, name, variant};
return layout_;
}
Language::XKBContext::~XKBContext() { rxkb_context_unref(context_); }
} // namespace waybar::modules::sway