130 lines
3.4 KiB
C++
130 lines
3.4 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop application for the Telegram messaging service.
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For license and copyright information please follow this link:
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https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
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*/
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#include "platform/linux/linux_desktop_environment.h"
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#include "base/platform/base_platform_info.h"
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namespace Platform {
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namespace DesktopEnvironment {
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namespace {
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QString GetEnv(const char *name) {
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const auto value = qEnvironmentVariable(name);
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LOG(("Getting DE, %1: '%2'").arg(name, value));
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return value;
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}
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QString GetWM() {
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const auto result = Platform::GetWindowManager();
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LOG(("Getting DE via WM: '%1'").arg(result));
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return result;
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}
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std::vector<Type> Compute() {
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auto result = std::vector<Type>();
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const auto xdgCurrentDesktop = GetEnv(
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"XDG_CURRENT_DESKTOP").toLower().split(':', Qt::SkipEmptyParts);
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const auto xdgSessionDesktop = GetEnv("XDG_SESSION_DESKTOP").toLower();
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const auto desktopSession = [] {
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const auto result = GetEnv("DESKTOP_SESSION").toLower();
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const auto slash = result.lastIndexOf('/');
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// DESKTOP_SESSION can contain a path
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if (slash != -1) {
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return result.mid(slash + 1);
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}
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return result;
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}();
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const auto windowManager = GetWM().toLower();
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const auto desktopToType = [&](const QString &desktop) {
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if (desktop == qstr("unity")) {
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// gnome-fallback sessions set XDG_CURRENT_DESKTOP to Unity
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// DESKTOP_SESSION can be gnome-fallback or gnome-fallback-compiz
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if (desktopSession.contains(qstr("gnome-fallback"))) {
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result.push_back(Type::Gnome);
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}
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result.push_back(Type::Unity);
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} else if (desktop == qstr("gnome")) {
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result.push_back(Type::Gnome);
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} else if (desktop == qstr("x-cinnamon") || desktop == qstr("cinnamon")) {
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result.push_back(Type::Cinnamon);
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} else if (desktop == qstr("kde")) {
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result.push_back(Type::KDE);
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} else if (desktop == qstr("mate")) {
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result.push_back(Type::MATE);
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}
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};
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for (const auto ¤t : xdgCurrentDesktop) {
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desktopToType(current);
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}
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if (!xdgSessionDesktop.isEmpty()) {
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desktopToType(xdgSessionDesktop);
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}
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if (!desktopSession.isEmpty()) {
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desktopToType(desktopSession);
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}
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// Fall back on some older environment variables.
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// Useful particularly in the DESKTOP_SESSION=default case.
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if (!GetEnv("GNOME_DESKTOP_SESSION_ID").isEmpty()) {
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result.push_back(Type::Gnome);
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}
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if (!GetEnv("KDE_FULL_SESSION").isEmpty()) {
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result.push_back(Type::KDE);
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}
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// Some DEs could be detected via X11
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if (!windowManager.isEmpty()) {
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if (windowManager == qstr("gnome shell")) {
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result.push_back(Type::Gnome);
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}
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}
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result = result | ranges::views::unique | ranges::to_vector;
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return result;
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}
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std::vector<Type> ComputeAndLog() {
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const auto result = Compute();
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if (result.empty()) {
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LOG(("DE: Other"));
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return {};
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}
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const auto names = ranges::accumulate(
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result | ranges::views::transform([](auto type) {
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switch (type) {
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case Type::Gnome: return u"Gnome, "_q;
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case Type::Cinnamon: return u"Cinnamon, "_q;
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case Type::KDE: return u"KDE, "_q;
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case Type::Unity: return u"Unity, "_q;
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case Type::MATE: return u"MATE, "_q;
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}
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Unexpected("Type in Platform::DesktopEnvironment::ComputeAndLog");
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}),
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QString()).chopped(2);
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LOG(("DE: %1").arg(names));
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return result;
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}
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} // namespace
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// Thanks Chromium.
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std::vector<Type> Get() {
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static const auto result = ComputeAndLog();
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return result;
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}
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} // namespace DesktopEnvironment
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} // namespace Platform
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