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// qsampler.cpp |
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// |
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/**************************************************************************** |
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Copyright (C) 2004-2022, rncbc aka Rui Nuno Capela. All rights reserved. |
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Copyright (C) 2007,2008,2015,2019 Christian Schoenebeck |
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|
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This program is free software; you can redistribute it and/or |
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modify it under the terms of the GNU General Public License |
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as published by the Free Software Foundation; either version 2 |
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of the License, or (at your option) any later version. |
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|
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License along |
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with this program; if not, write to the Free Software Foundation, Inc., |
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
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|
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*****************************************************************************/ |
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|
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#include "qsampler.h" |
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|
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#include "qsamplerOptions.h" |
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#include "qsamplerMainForm.h" |
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|
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#include "qsamplerPaletteForm.h" |
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|
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#include <QDir> |
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|
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#include <QStyleFactory> |
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|
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#include <QLibraryInfo> |
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#include <QTranslator> |
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#include <QLocale> |
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|
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#if QT_VERSION >= QT_VERSION_CHECK(5, 2, 0) |
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#include <lscp/client.h> |
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#ifdef CONFIG_LIBGIG |
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#if defined(Q_CC_GNU) || defined(Q_CC_MINGW) |
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#pragma GCC diagnostic push |
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#pragma GCC diagnostic ignored "-Wunused-parameter" |
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#endif |
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#include <gig.h> |
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#if defined(Q_CC_GNU) || defined(Q_CC_MINGW) |
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#pragma GCC diagnostic pop |
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#endif |
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#endif |
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#endif |
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|
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#if defined(__APPLE__) // Toshi Nagata 20080105 |
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#include <QDir> |
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#endif |
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|
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#ifndef CONFIG_PREFIX |
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#define CONFIG_PREFIX "/usr/local" |
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#endif |
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|
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#ifndef CONFIG_BINDIR |
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#define CONFIG_BINDIR CONFIG_PREFIX "/bin" |
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#endif |
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|
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#ifndef CONFIG_DATADIR |
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#define CONFIG_DATADIR CONFIG_PREFIX "/share" |
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#endif |
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|
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#ifndef CONFIG_LIBDIR |
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#if defined(__x86_64__) |
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#define CONFIG_LIBDIR CONFIG_PREFIX "/lib64" |
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#else |
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#define CONFIG_LIBDIR CONFIG_PREFIX "/lib" |
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#endif |
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#endif |
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|
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#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0) |
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#define CONFIG_PLUGINSDIR CONFIG_LIBDIR "/qt4/plugins" |
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#elif QT_VERSION < QT_VERSION_CHECK(6, 0, 0) |
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#define CONFIG_PLUGINSDIR CONFIG_LIBDIR "/qt5/plugins" |
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#else |
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#define CONFIG_PLUGINSDIR CONFIG_LIBDIR "/qt6/plugins" |
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#endif |
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|
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#if defined(__WIN32__) || defined(_WIN32) || defined(WIN32) |
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#define RELATIVE_LOCALE_DIR "/share/locale" |
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#elif defined(__APPLE__) |
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#define RELATIVE_LOCALE_DIR "/../Resources" |
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#endif |
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|
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|
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//------------------------------------------------------------------------- |
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// Singleton application instance stuff (Qt/X11 only atm.) |
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// |
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|
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#ifdef CONFIG_XUNIQUE |
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|
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#define QSAMPLER_XUNIQUE "qsamplerApplication" |
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|
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#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0) |
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#ifdef CONFIG_X11 |
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|
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#include <unistd.h> /* for gethostname() */ |
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|
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#include <X11/Xatom.h> |
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#include <X11/Xlib.h> |
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|
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#endif // CONFIG_X11 |
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#else |
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#include <QSharedMemory> |
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#include <QLocalServer> |
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#include <QLocalSocket> |
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#include <QHostInfo> |
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#endif |
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|
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#endif // CONFIG_XUNIQUE |
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|
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|
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// Constructor. |
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qsamplerApplication::qsamplerApplication ( int& argc, char **argv ) |
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: QApplication(argc, argv), |
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m_pQtTranslator(nullptr), m_pMyTranslator(nullptr), m_pWidget(nullptr) |
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{ |
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#if QT_VERSION >= QT_VERSION_CHECK(5, 1, 0) |
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QApplication::setApplicationName(QSAMPLER_TITLE); |
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QApplication::setApplicationDisplayName(QSAMPLER_TITLE); |
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// QSAMPLER_TITLE " - " + QObject::tr(QSAMPLER_SUBTITLE)); |
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#if QT_VERSION >= QT_VERSION_CHECK(5, 7, 0) |
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QApplication::setDesktopFileName( |
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QString("org.rncbc.%1").arg(PACKAGE_TARNAME)); |
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#endif |
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QString sVersion(CONFIG_BUILD_VERSION); |
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sVersion += '\n'; |
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sVersion += QString("Qt: %1").arg(qVersion()); |
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#if defined(QT_STATIC) |
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sVersion += "-static"; |
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#endif |
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sVersion += '\n'; |
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#ifdef CONFIG_LIBGIG |
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sVersion += QString("%1: %2") |
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.arg(gig::libraryName().c_str()) |
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.arg(gig::libraryVersion().c_str()); |
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sVersion += '\n'; |
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#endif |
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sVersion += QString("%1: %2") |
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.arg(::lscp_client_package()) |
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.arg(::lscp_client_version()); |
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QApplication::setApplicationVersion(sVersion); |
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#endif |
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// Load translation support. |
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QLocale loc; |
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if (loc.language() != QLocale::C) { |
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// Try own Qt translation... |
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m_pQtTranslator = new QTranslator(this); |
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QString sLocName = "qt_" + loc.name(); |
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#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0) |
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QString sLocPath = QLibraryInfo::path(QLibraryInfo::TranslationsPath); |
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#else |
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QString sLocPath = QLibraryInfo::location(QLibraryInfo::TranslationsPath); |
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#endif |
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if (m_pQtTranslator->load(sLocName, sLocPath)) { |
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QApplication::installTranslator(m_pQtTranslator); |
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} else { |
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sLocPath = QApplication::applicationDirPath(); |
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#ifdef RELATIVE_LOCALE_DIR |
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sLocPath.append(RELATIVE_LOCALE_DIR); |
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#else |
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sLocPath.remove(CONFIG_BINDIR); |
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sLocPath.append(CONFIG_DATADIR "/qsampler/translations"); |
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#endif |
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if (m_pQtTranslator->load(sLocName, sLocPath)) { |
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QApplication::installTranslator(m_pQtTranslator); |
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} else { |
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delete m_pQtTranslator; |
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m_pQtTranslator = nullptr; |
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#ifdef CONFIG_DEBUG |
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qWarning("Warning: no translation found for '%s' locale: %s/%s.qm", |
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loc.name().toUtf8().constData(), |
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sLocPath.toUtf8().constData(), |
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sLocName.toUtf8().constData()); |
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#endif |
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} |
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} |
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// Try own application translation... |
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m_pMyTranslator = new QTranslator(this); |
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sLocName = "qsampler_" + loc.name(); |
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if (m_pMyTranslator->load(sLocName, sLocPath)) { |
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QApplication::installTranslator(m_pMyTranslator); |
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} else { |
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#ifdef RELATIVE_LOCALE_DIR |
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sLocPath = QApplication::applicationDirPath() + RELATIVE_LOCALE_DIR; |
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#else |
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sLocPath = CONFIG_DATADIR "/qsampler/translations"; |
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#endif |
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if (m_pMyTranslator->load(sLocName, sLocPath)) { |
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QApplication::installTranslator(m_pMyTranslator); |
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} else { |
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delete m_pMyTranslator; |
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m_pMyTranslator = nullptr; |
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#ifdef CONFIG_DEBUG |
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qWarning("Warning: no translation found for '%s' locale: %s/%s.qm", |
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loc.name().toUtf8().constData(), |
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sLocPath.toUtf8().constData(), |
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sLocName.toUtf8().constData()); |
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#endif |
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} |
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} |
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} |
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#ifdef CONFIG_XUNIQUE |
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#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0) |
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#ifdef CONFIG_X11 |
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m_pDisplay = nullptr; |
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m_aUnique = 0; |
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m_wOwner = 0; |
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#endif // CONFIG_X11 |
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#else |
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m_pMemory = nullptr; |
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m_pServer = nullptr; |
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#endif |
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#endif // CONFIG_XUNIQUE |
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} |
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|
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|
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// Destructor. |
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qsamplerApplication::~qsamplerApplication (void) |
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{ |
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#ifdef CONFIG_XUNIQUE |
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#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0) |
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if (m_pServer) { |
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m_pServer->close(); |
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delete m_pServer; |
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m_pServer = nullptr; |
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} |
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if (m_pMemory) { |
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delete m_pMemory; |
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m_pMemory = nullptr; |
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} |
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#endif |
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#endif // CONFIG_XUNIQUE |
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if (m_pMyTranslator) delete m_pMyTranslator; |
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if (m_pQtTranslator) delete m_pQtTranslator; |
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} |
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|
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|
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// Main application widget accessors. |
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void qsamplerApplication::setMainWidget ( QWidget *pWidget ) |
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{ |
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m_pWidget = pWidget; |
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#ifdef CONFIG_XUNIQUE |
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#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0) |
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#ifdef CONFIG_X11 |
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m_wOwner = m_pWidget->winId(); |
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if (m_pDisplay && m_wOwner) { |
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XGrabServer(m_pDisplay); |
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XSetSelectionOwner(m_pDisplay, m_aUnique, m_wOwner, CurrentTime); |
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XUngrabServer(m_pDisplay); |
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} |
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#endif // CONFIG_X11 |
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#endif |
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#endif // CONFIG_XUNIQUE |
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} |
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|
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|
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// Check if another instance is running, |
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// and raise its proper main widget... |
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bool qsamplerApplication::setup (void) |
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{ |
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#ifdef CONFIG_XUNIQUE |
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#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0) |
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#ifdef CONFIG_X11 |
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m_pDisplay = QX11Info::display(); |
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if (m_pDisplay) { |
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QString sUnique = QSAMPLER_XUNIQUE; |
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QString sUserName = QString::fromUtf8(::getenv("USER")); |
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if (sUserName.isEmpty()) |
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sUserName = QString::fromUtf8(::getenv("USERNAME")); |
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if (!sUserName.isEmpty()) { |
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sUnique += ':'; |
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sUnique += sUserName; |
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} |
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char szHostName[255]; |
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if (::gethostname(szHostName, sizeof(szHostName)) == 0) { |
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sUnique += '@'; |
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sUnique += QString::fromUtf8(szHostName); |
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} |
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m_aUnique = XInternAtom(m_pDisplay, sUnique.toUtf8().constData(), false); |
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XGrabServer(m_pDisplay); |
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m_wOwner = XGetSelectionOwner(m_pDisplay, m_aUnique); |
288 |
XUngrabServer(m_pDisplay); |
289 |
if (m_wOwner != None) { |
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// First, notify any freedesktop.org WM |
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// that we're about to show the main widget... |
292 |
Screen *pScreen = XDefaultScreenOfDisplay(m_pDisplay); |
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int iScreen = XScreenNumberOfScreen(pScreen); |
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XEvent ev; |
295 |
memset(&ev, 0, sizeof(ev)); |
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ev.xclient.type = ClientMessage; |
297 |
ev.xclient.display = m_pDisplay; |
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ev.xclient.window = m_wOwner; |
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ev.xclient.message_type = XInternAtom(m_pDisplay, "_NET_ACTIVE_WINDOW", false); |
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ev.xclient.format = 32; |
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ev.xclient.data.l[0] = 0; // Source indication. |
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ev.xclient.data.l[1] = 0; // Timestamp. |
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ev.xclient.data.l[2] = 0; // Requestor's currently active window (none) |
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ev.xclient.data.l[3] = 0; |
305 |
ev.xclient.data.l[4] = 0; |
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XSelectInput(m_pDisplay, m_wOwner, StructureNotifyMask); |
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XSendEvent(m_pDisplay, RootWindow(m_pDisplay, iScreen), false, |
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(SubstructureNotifyMask | SubstructureRedirectMask), &ev); |
309 |
XSync(m_pDisplay, false); |
310 |
XRaiseWindow(m_pDisplay, m_wOwner); |
311 |
// And then, let it get caught on destination |
312 |
// by QApplication::native/x11EventFilter... |
313 |
const QByteArray value = QSAMPLER_XUNIQUE; |
314 |
XChangeProperty( |
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m_pDisplay, |
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m_wOwner, |
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m_aUnique, |
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m_aUnique, 8, |
319 |
PropModeReplace, |
320 |
(unsigned char *) value.data(), |
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value.length()); |
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// Done. |
323 |
return true; |
324 |
} |
325 |
} |
326 |
#endif // CONFIG_X11 |
327 |
return false; |
328 |
#else |
329 |
m_sUnique = QCoreApplication::applicationName(); |
330 |
QString sUserName = QString::fromUtf8(::getenv("USER")); |
331 |
if (sUserName.isEmpty()) |
332 |
sUserName = QString::fromUtf8(::getenv("USERNAME")); |
333 |
if (!sUserName.isEmpty()) { |
334 |
m_sUnique += ':'; |
335 |
m_sUnique += sUserName; |
336 |
} |
337 |
m_sUnique += '@'; |
338 |
m_sUnique += QHostInfo::localHostName(); |
339 |
#ifdef Q_OS_UNIX |
340 |
m_pMemory = new QSharedMemory(m_sUnique); |
341 |
m_pMemory->attach(); |
342 |
delete m_pMemory; |
343 |
#endif |
344 |
m_pMemory = new QSharedMemory(m_sUnique); |
345 |
bool bServer = false; |
346 |
const qint64 pid = QCoreApplication::applicationPid(); |
347 |
struct Data { qint64 pid; }; |
348 |
if (m_pMemory->create(sizeof(Data))) { |
349 |
m_pMemory->lock(); |
350 |
Data *pData = static_cast<Data *> (m_pMemory->data()); |
351 |
if (pData) { |
352 |
pData->pid = pid; |
353 |
bServer = true; |
354 |
} |
355 |
m_pMemory->unlock(); |
356 |
} |
357 |
else |
358 |
if (m_pMemory->attach()) { |
359 |
m_pMemory->lock(); // maybe not necessary? |
360 |
Data *pData = static_cast<Data *> (m_pMemory->data()); |
361 |
if (pData) |
362 |
bServer = (pData->pid == pid); |
363 |
m_pMemory->unlock(); |
364 |
} |
365 |
if (bServer) { |
366 |
QLocalServer::removeServer(m_sUnique); |
367 |
m_pServer = new QLocalServer(); |
368 |
m_pServer->setSocketOptions(QLocalServer::UserAccessOption); |
369 |
m_pServer->listen(m_sUnique); |
370 |
QObject::connect(m_pServer, |
371 |
SIGNAL(newConnection()), |
372 |
SLOT(newConnectionSlot())); |
373 |
} else { |
374 |
QLocalSocket socket; |
375 |
socket.connectToServer(m_sUnique); |
376 |
if (socket.state() == QLocalSocket::ConnectingState) |
377 |
socket.waitForConnected(200); |
378 |
if (socket.state() == QLocalSocket::ConnectedState) { |
379 |
socket.write(QCoreApplication::arguments().join(' ').toUtf8()); |
380 |
socket.flush(); |
381 |
socket.waitForBytesWritten(200); |
382 |
} |
383 |
} |
384 |
return !bServer; |
385 |
#endif |
386 |
#else |
387 |
return false; |
388 |
#endif // !CONFIG_XUNIQUE |
389 |
} |
390 |
|
391 |
|
392 |
#ifdef CONFIG_XUNIQUE |
393 |
#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0) |
394 |
#ifdef CONFIG_X11 |
395 |
|
396 |
void qsamplerApplication::x11PropertyNotify ( Window w ) |
397 |
{ |
398 |
if (m_pDisplay && m_pWidget && m_wOwner == w) { |
399 |
// Always check whether our property-flag is still around... |
400 |
Atom aType; |
401 |
int iFormat = 0; |
402 |
unsigned long iItems = 0; |
403 |
unsigned long iAfter = 0; |
404 |
unsigned char *pData = 0; |
405 |
if (XGetWindowProperty( |
406 |
m_pDisplay, |
407 |
m_wOwner, |
408 |
m_aUnique, |
409 |
0, 1024, |
410 |
false, |
411 |
m_aUnique, |
412 |
&aType, |
413 |
&iFormat, |
414 |
&iItems, |
415 |
&iAfter, |
416 |
&pData) == Success |
417 |
&& aType == m_aUnique && iItems > 0 && iAfter == 0) { |
418 |
// Avoid repeating it-self... |
419 |
XDeleteProperty(m_pDisplay, m_wOwner, m_aUnique); |
420 |
// Just make it always shows up fine... |
421 |
m_pWidget->show(); |
422 |
m_pWidget->raise(); |
423 |
m_pWidget->activateWindow(); |
424 |
} |
425 |
// Free any left-overs... |
426 |
if (iItems > 0 && pData) |
427 |
XFree(pData); |
428 |
} |
429 |
} |
430 |
|
431 |
|
432 |
bool qsamplerApplication::x11EventFilter ( XEvent *pEv ) |
433 |
{ |
434 |
if (pEv->type == PropertyNotify |
435 |
&& pEv->xproperty.state == PropertyNewValue) |
436 |
x11PropertyNotify(pEv->xproperty.window); |
437 |
return QApplication::x11EventFilter(pEv); |
438 |
} |
439 |
|
440 |
#endif // CONFIG_X11 |
441 |
#else |
442 |
|
443 |
// Local server conection slot. |
444 |
void qsamplerApplication::newConnectionSlot (void) |
445 |
{ |
446 |
QLocalSocket *pSocket = m_pServer->nextPendingConnection(); |
447 |
QObject::connect(pSocket, |
448 |
SIGNAL(readyRead()), |
449 |
SLOT(readyReadSlot())); |
450 |
} |
451 |
|
452 |
// Local server data-ready slot. |
453 |
void qsamplerApplication::readyReadSlot (void) |
454 |
{ |
455 |
QLocalSocket *pSocket = qobject_cast<QLocalSocket *> (sender()); |
456 |
if (pSocket) { |
457 |
const qint64 nread = pSocket->bytesAvailable(); |
458 |
if (nread > 0) { |
459 |
const QByteArray data = pSocket->read(nread); |
460 |
// Just make it always shows up fine... |
461 |
m_pWidget->hide(); |
462 |
m_pWidget->show(); |
463 |
m_pWidget->raise(); |
464 |
m_pWidget->activateWindow(); |
465 |
} |
466 |
} |
467 |
} |
468 |
|
469 |
#endif |
470 |
#endif // CONFIG_XUNIQUE |
471 |
|
472 |
|
473 |
//------------------------------------------------------------------------- |
474 |
// stacktrace - Signal crash handler. |
475 |
// |
476 |
|
477 |
#ifdef CONFIG_STACKTRACE |
478 |
#if defined(__GNUC__) && defined(Q_OS_LINUX) |
479 |
|
480 |
#include <stdio.h> |
481 |
#include <errno.h> |
482 |
#include <signal.h> |
483 |
#include <unistd.h> |
484 |
#include <sys/wait.h> |
485 |
|
486 |
void stacktrace ( int signo ) |
487 |
{ |
488 |
pid_t pid; |
489 |
int rc; |
490 |
int status = 0; |
491 |
char cmd[80]; |
492 |
|
493 |
// Reinstall default handler; prevent race conditions... |
494 |
::signal(signo, SIG_DFL); |
495 |
|
496 |
static const char *shell = "/bin/sh"; |
497 |
static const char *format = "gdb -q --batch --pid=%d" |
498 |
" --eval-command='thread apply all bt'"; |
499 |
|
500 |
snprintf(cmd, sizeof(cmd), format, (int) getpid()); |
501 |
|
502 |
pid = fork(); |
503 |
|
504 |
// Fork failure! |
505 |
if (pid < 0) |
506 |
return; |
507 |
|
508 |
// Fork child... |
509 |
if (pid == 0) { |
510 |
execl(shell, shell, "-c", cmd, nullptr); |
511 |
_exit(1); |
512 |
return; |
513 |
} |
514 |
|
515 |
// Parent here: wait for child to terminate... |
516 |
do { rc = waitpid(pid, &status, 0); } |
517 |
while ((rc < 0) && (errno == EINTR)); |
518 |
|
519 |
// Dispatch any logging, if any... |
520 |
QApplication::processEvents(QEventLoop::AllEvents, 3000); |
521 |
|
522 |
// Make sure everyone terminates... |
523 |
kill(pid, SIGTERM); |
524 |
_exit(1); |
525 |
} |
526 |
|
527 |
#endif |
528 |
#endif |
529 |
|
530 |
|
531 |
//------------------------------------------------------------------------- |
532 |
// main - The main program trunk. |
533 |
// |
534 |
|
535 |
int main ( int argc, char **argv ) |
536 |
{ |
537 |
Q_INIT_RESOURCE(qsampler); |
538 |
#ifdef CONFIG_STACKTRACE |
539 |
#if defined(__GNUC__) && defined(Q_OS_LINUX) |
540 |
::signal(SIGILL, stacktrace); |
541 |
::signal(SIGFPE, stacktrace); |
542 |
::signal(SIGSEGV, stacktrace); |
543 |
::signal(SIGABRT, stacktrace); |
544 |
::signal(SIGBUS, stacktrace); |
545 |
#endif |
546 |
#endif |
547 |
#if defined(Q_OS_LINUX) && !defined(CONFIG_WAYLAND) |
548 |
::setenv("QT_QPA_PLATFORM", "xcb", 0); |
549 |
#endif |
550 |
#if QT_VERSION >= QT_VERSION_CHECK(5, 6, 0) |
551 |
#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0) |
552 |
QApplication::setAttribute(Qt::AA_EnableHighDpiScaling); |
553 |
#endif |
554 |
#endif |
555 |
qsamplerApplication app(argc, argv); |
556 |
|
557 |
#if defined(__APPLE__) // Toshi Nagata 20080105 |
558 |
{ |
559 |
// Set the plugin path to @exetutable_path/../plugins |
560 |
QDir dir(QApplication::applicationDirPath()); |
561 |
dir.cdUp(); // "Contents" directory |
562 |
QApplication::setLibraryPaths(QStringList(dir.absolutePath() + "/plugins")); |
563 |
|
564 |
// Set the PATH environment variable to include @executable_path/../../.. |
565 |
dir.cdUp(); |
566 |
dir.cdUp(); |
567 |
QString path(getenv("PATH")); |
568 |
path = dir.absolutePath() + ":" + path; |
569 |
setenv("PATH", path.toUtf8().constData(), 1); |
570 |
} |
571 |
#endif |
572 |
|
573 |
// Construct default settings; override with command line arguments. |
574 |
QSampler::Options options; |
575 |
if (!options.parse_args(app.arguments())) { |
576 |
app.quit(); |
577 |
return 1; |
578 |
} |
579 |
|
580 |
// Have another instance running? |
581 |
if (app.setup()) { |
582 |
app.quit(); |
583 |
return 2; |
584 |
} |
585 |
|
586 |
// Special custom styles... |
587 |
if (QDir(CONFIG_PLUGINSDIR).exists()) |
588 |
app.addLibraryPath(CONFIG_PLUGINSDIR); |
589 |
if (!options.sCustomStyleTheme.isEmpty()) |
590 |
app.setStyle(QStyleFactory::create(options.sCustomStyleTheme)); |
591 |
|
592 |
// Custom color theme (eg. "KXStudio")... |
593 |
QPalette pal(app.palette()); |
594 |
if (QSampler::PaletteForm::namedPalette( |
595 |
&options.settings(), options.sCustomColorTheme, pal)) |
596 |
app.setPalette(pal); |
597 |
|
598 |
// Set default base font... |
599 |
if (options.iBaseFontSize > 0) |
600 |
app.setFont(QFont(app.font().family(), options.iBaseFontSize)); |
601 |
|
602 |
// Construct, setup and show the main form. |
603 |
QSampler::MainForm w; |
604 |
w.setup(&options); |
605 |
w.show(); |
606 |
|
607 |
// Settle this one as application main widget... |
608 |
app.setMainWidget(&w); |
609 |
|
610 |
// Register the quit signal/slot. |
611 |
// app.connect(&app, SIGNAL(lastWindowClosed()), &app, SLOT(quit())); |
612 |
|
613 |
return app.exec(); |
614 |
} |
615 |
|
616 |
|
617 |
// end of qsampler.cpp |
618 |
|