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/* BEGIN_COMMON_COPYRIGHT_HEADER
* (c)LGPL2+
*
* LXQt - a lightweight, Qt based, desktop toolset
* https://lxqt.org
*
* Copyright: 2012-2013 Razor team
* Authors:
* Petr Vanek <petr@scribus.info>
*
* This program or library is free software; you can redistribute it
* and/or modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General
* Public License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*
* END_COMMON_COPYRIGHT_HEADER */
#include <QDir>
#include "lxqtapplication.h"
#include "lxqtsettings.h"
#include <XdgDirs>
using namespace LXQt;
#define COLOR_DEBUG "\033[32;2m"
#define COLOR_WARN "\033[33;2m"
#define COLOR_CRITICAL "\033[31;1m"
#define COLOR_FATAL "\033[33;1m"
#define COLOR_RESET "\033[0m"
#define QAPP_NAME qApp ? qApp->objectName().toUtf8().constData() : ""
#include <cstdio>
#include <unistd.h>
#include <cstring>
#include <csignal>
#include <cerrno>
#include <sys/socket.h>
#include <QDateTime>
#include <QDebug>
#include <QSocketNotifier>
/*! \brief Log qDebug input to file
Used only in pure Debug builds or when is the system environment
variable LXQT_DEBUG set
*/
void dbgMessageOutput(QtMsgType type, const QMessageLogContext &ctx, const QString & msgStr)
{
Q_UNUSED(ctx)
QByteArray msgBuf = msgStr.toUtf8();
const char* msg = msgBuf.constData();
QDir dir(XdgDirs::configHome().toUtf8() + QLatin1String("/lxqt"));
dir.mkpath(".");
const char* typestr;
const char* color;
switch (type) {
case QtDebugMsg:
typestr = "Debug";
color = COLOR_DEBUG;
break;
case QtWarningMsg:
typestr = "Warning";
color = COLOR_WARN;
break;
case QtFatalMsg:
typestr = "Fatal";
color = COLOR_FATAL;
break;
default: // QtCriticalMsg
typestr = "Critical";
color = COLOR_CRITICAL;
}
QByteArray dt = QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss.zzz").toUtf8();
if (isatty(STDERR_FILENO))
fprintf(stderr, "%s %s(%p) %s: %s%s\n", color, QAPP_NAME, static_cast<void *>(qApp), typestr, msg, COLOR_RESET);
else
fprintf(stderr, "%s(%p) %s: %s\n", QAPP_NAME, static_cast<void *>(qApp), typestr, msg);
FILE *f = fopen(dir.absoluteFilePath("debug.log").toUtf8().constData(), "a+");
fprintf(f, "%s %s(%p) %s: %s\n", dt.constData(), QAPP_NAME, static_cast<void *>(qApp), typestr, msg);
fclose(f);
if (type == QtFatalMsg)
abort();
}
Application::Application(int &argc, char** argv)
: QApplication(argc, argv)
{
#ifdef DEBUG
qInstallMessageHandler(dbgMessageOutput);
#else
if (!qEnvironmentVariableIsSet("LXQT_DEBUG"))
qInstallMessageHandler(dbgMessageOutput);
#endif
setWindowIcon(QIcon(QString(LXQT_GRAPHICS_DIR) + "/lxqt_logo.png"));
connect(Settings::globalSettings(), SIGNAL(lxqtThemeChanged()), this, SLOT(updateTheme()));
updateTheme();
}
Application::Application(int &argc, char** argv, bool handleQuitSignals)
: Application(argc, argv)
{
if (handleQuitSignals)
{
QList<int> signo_list = {SIGINT, SIGTERM, SIGHUP};
connect(this, &Application::unixSignal, [this, signo_list] (int signo)
{
if (signo_list.contains(signo))
quit();
});
listenToUnixSignals(signo_list);
}
}
void Application::updateTheme()
{
const QString styleSheetKey = QFileInfo(applicationFilePath()).fileName();
setStyleSheet(lxqtTheme.qss(styleSheetKey));
emit themeChanged();
}
namespace
{
class SignalHandler
{
public:
static void signalHandler(int signo)
{
const int ret = write(instance->mSignalSock[0], &signo, sizeof (int));
if (sizeof (int) != ret)
qCritical() << QStringLiteral("unable to write into socketpair, %1").arg(strerror(errno));
}
public:
template <class Lambda>
SignalHandler(Application * app, Lambda signalEmitter)
: mSignalSock{-1, -1}
{
if (0 != socketpair(AF_UNIX, SOCK_STREAM, 0, mSignalSock))
{
qCritical() << QStringLiteral("unable to create socketpair for correct signal handling: %1)").arg(strerror(errno));
return;
}
mNotifier.reset(new QSocketNotifier(mSignalSock[1], QSocketNotifier::Read));
QObject::connect(mNotifier.data(), &QSocketNotifier::activated, app, [this, signalEmitter] {
int signo = 0;
int ret = read(mSignalSock[1], &signo, sizeof (int));
if (sizeof (int) != ret)
qCritical() << QStringLiteral("unable to read signal from socketpair, %1").arg(strerror(errno));
signalEmitter(signo);
});
}
~SignalHandler()
{
close(mSignalSock[0]);
close(mSignalSock[1]);
}
void listenToSignals(QList<int> const & signoList)
{
struct sigaction sa;
sa.sa_handler = signalHandler;
sigemptyset(&sa.sa_mask);
sa.sa_flags = 0;
for (auto const & signo : signoList)
sigaction(signo, &sa, nullptr);
}
public:
static QScopedPointer<SignalHandler> instance;
private:
int mSignalSock[2];
QScopedPointer<QSocketNotifier> mNotifier;
};
QScopedPointer<SignalHandler> SignalHandler::instance;
}
void Application::listenToUnixSignals(QList<int> const & signoList)
{
static QScopedPointer<QSocketNotifier> signal_notifier;
if (SignalHandler::instance.isNull())
SignalHandler::instance.reset(new SignalHandler{this, [this] (int signo) { emit unixSignal(signo); }});
SignalHandler::instance->listenToSignals(signoList);
}
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