113 lines
3.0 KiB
C++
113 lines
3.0 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 "platform/linux/specific_linux.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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auto result = getenv(name);
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auto value = result ? QString::fromLatin1(result) : QString();
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LOG(("Getting DE, %1: '%2'").arg(name).arg(value));
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return value;
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}
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Type Compute() {
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auto xdgCurrentDesktop = GetEnv("XDG_CURRENT_DESKTOP").toLower();
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auto list = xdgCurrentDesktop.split(':', QString::SkipEmptyParts);
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auto desktopSession = GetEnv("DESKTOP_SESSION").toLower();
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auto slash = desktopSession.lastIndexOf('/');
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auto kdeSession = GetEnv("KDE_SESSION_VERSION");
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// DESKTOP_SESSION can contain a path
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if (slash != -1) {
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desktopSession = desktopSession.mid(slash + 1);
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}
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if (!list.isEmpty()) {
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if (list.contains("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.indexOf(qstr("gnome-fallback")) >= 0) {
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return Type::Gnome;
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}
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return Type::Unity;
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} else if (list.contains("gnome")) {
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return Type::Gnome;
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} else if (list.contains("kde")) {
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if (kdeSession == qstr("5")) {
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return Type::KDE5;
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}
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return Type::KDE4;
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} else if (list.contains("mate")) {
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return Type::MATE;
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}
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}
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if (!desktopSession.isEmpty()) {
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if (desktopSession == qstr("gnome")) {
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return Type::Gnome;
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} else if (desktopSession == qstr("kde4") || desktopSession == qstr("kde-plasma")) {
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return Type::KDE4;
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} else if (desktopSession == qstr("kde")) {
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// This may mean KDE4 on newer systems, so we have to check.
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if (!kdeSession.isEmpty()) {
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return Type::KDE4;
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}
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return Type::KDE3;
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} else if (desktopSession == qstr("mate")) {
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return Type::MATE;
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}
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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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return Type::Gnome;
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} else if (!GetEnv("KDE_FULL_SESSION").isEmpty()) {
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if (!kdeSession.isEmpty()) {
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return Type::KDE4;
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}
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return Type::KDE3;
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}
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return Type::Other;
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}
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Type ComputeAndLog() {
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auto result = Compute();
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auto name = [result]() -> QString {
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switch (result) {
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case Type::Other: return "Other";
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case Type::Gnome: return "Gnome";
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case Type::KDE3: return "KDE3";
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case Type::KDE4: return "KDE4";
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case Type::KDE5: return "KDE5";
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case Type::Unity: return "Unity";
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case Type::MATE: return "MATE";
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}
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return QString::number(static_cast<int>(result));
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};
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LOG(("DE: %1").arg(name()));
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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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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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