Waybar/src/AAppIconLabel.cpp

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#include "AAppIconLabel.hpp"
#include <gdkmm/pixbuf.h>
#include <glibmm/fileutils.h>
#include <glibmm/keyfile.h>
#include <glibmm/miscutils.h>
#include <spdlog/spdlog.h>
#include <filesystem>
#include <optional>
#include "util/gtk_icon.hpp"
namespace waybar {
AAppIconLabel::AAppIconLabel(const Json::Value& config, const std::string& name,
const std::string& id, const std::string& format, uint16_t interval,
bool ellipsize, bool enable_click, bool enable_scroll)
: AIconLabel(config, name, id, format, interval, ellipsize, enable_click, enable_scroll) {
// Icon size
if (config["icon-size"].isUInt()) {
app_icon_size_ = config["icon-size"].asUInt();
}
image_.set_pixel_size(app_icon_size_);
}
std::optional<std::string> getDesktopFilePath(const std::string& app_identifier,
const std::string& alternative_app_identifier) {
const auto data_dirs = Glib::get_system_data_dirs();
for (const auto& data_dir : data_dirs) {
const auto data_app_dir = data_dir + "applications/";
auto desktop_file_path = data_app_dir + app_identifier + ".desktop";
if (std::filesystem::exists(desktop_file_path)) {
return desktop_file_path;
}
if (!alternative_app_identifier.empty()) {
desktop_file_path = data_app_dir + alternative_app_identifier + ".desktop";
if (std::filesystem::exists(desktop_file_path)) {
return desktop_file_path;
}
}
}
return {};
}
std::optional<Glib::ustring> getIconName(const std::string& app_identifier,
const std::string& alternative_app_identifier) {
const auto desktop_file_path = getDesktopFilePath(app_identifier, alternative_app_identifier);
if (!desktop_file_path.has_value()) {
// Try some heuristics to find a matching icon
if (DefaultGtkIconThemeWrapper::has_icon(app_identifier)) {
return app_identifier;
}
const auto app_identifier_desktop = app_identifier + "-desktop";
if (DefaultGtkIconThemeWrapper::has_icon(app_identifier_desktop)) {
return app_identifier_desktop;
}
const auto to_lower = [](const std::string& str) {
auto str_cpy = str;
std::transform(str_cpy.begin(), str_cpy.end(), str_cpy.begin(),
[](unsigned char c) { return std::tolower(c); });
return str;
};
const auto first_space = app_identifier.find_first_of(' ');
if (first_space != std::string::npos) {
const auto first_word = to_lower(app_identifier.substr(0, first_space));
if (DefaultGtkIconThemeWrapper::has_icon(first_word)) {
return first_word;
}
}
const auto first_dash = app_identifier.find_first_of('-');
if (first_dash != std::string::npos) {
const auto first_word = to_lower(app_identifier.substr(0, first_dash));
if (DefaultGtkIconThemeWrapper::has_icon(first_word)) {
return first_word;
}
}
return {};
}
try {
Glib::KeyFile desktop_file;
desktop_file.load_from_file(desktop_file_path.value());
return desktop_file.get_string("Desktop Entry", "Icon");
} catch (Glib::FileError& error) {
spdlog::warn("Error while loading desktop file {}: {}", desktop_file_path.value(),
error.what().c_str());
} catch (Glib::KeyFileError& error) {
spdlog::warn("Error while loading desktop file {}: {}", desktop_file_path.value(),
error.what().c_str());
}
return {};
}
void AAppIconLabel::updateAppIconName(const std::string& app_identifier,
const std::string& alternative_app_identifier) {
if (!iconEnabled()) {
return;
}
const auto icon_name = getIconName(app_identifier, alternative_app_identifier);
if (icon_name.has_value()) {
app_icon_name_ = icon_name.value();
} else {
app_icon_name_ = "";
}
update_app_icon_ = true;
}
void AAppIconLabel::updateAppIcon() {
if (update_app_icon_) {
update_app_icon_ = false;
if (app_icon_name_.empty()) {
image_.set_visible(false);
} else {
image_.set_from_icon_name(app_icon_name_, Gtk::ICON_SIZE_INVALID);
image_.set_visible(true);
}
}
}
auto AAppIconLabel::update() -> void {
updateAppIcon();
AIconLabel::update();
}
} // namespace waybar