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// qsampler.cpp |
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// |
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/**************************************************************************** |
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Copyright (C) 2004-2021, 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 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_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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#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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#ifdef RELATIVE_LOCALE_DIR |
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sLocPath = QApplication::applicationDirPath() + RELATIVE_LOCALE_DIR; |
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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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#endif |
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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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#ifdef RELATIVE_LOCALE_DIR |
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} |
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#endif |
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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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char szHostName[255]; |
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if (::gethostname(szHostName, sizeof(szHostName)) == 0) { |
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sUnique += '@'; |
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sUnique += 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); |
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XUngrabServer(m_pDisplay); |
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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... |
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Screen *pScreen = XDefaultScreenOfDisplay(m_pDisplay); |
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int iScreen = XScreenNumberOfScreen(pScreen); |
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XEvent ev; |
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memset(&ev, 0, sizeof(ev)); |
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ev.xclient.type = ClientMessage; |
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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; |
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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); |
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XSync(m_pDisplay, false); |
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XRaiseWindow(m_pDisplay, m_wOwner); |
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// And then, let it get caught on destination |
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// by QApplication::native/x11EventFilter... |
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const QByteArray value = QSAMPLER_XUNIQUE; |
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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, |
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PropModeReplace, |
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(unsigned char *) value.data(), |
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value.length()); |
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// Done. |
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return true; |
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} |
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} |
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#endif // CONFIG_X11 |
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return false; |
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#else |
281 |
m_sUnique = QCoreApplication::applicationName(); |
282 |
m_sUnique += '@'; |
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m_sUnique += QHostInfo::localHostName(); |
284 |
#ifdef Q_OS_UNIX |
285 |
m_pMemory = new QSharedMemory(m_sUnique); |
286 |
m_pMemory->attach(); |
287 |
delete m_pMemory; |
288 |
#endif |
289 |
m_pMemory = new QSharedMemory(m_sUnique); |
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bool bServer = false; |
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const qint64 pid = QCoreApplication::applicationPid(); |
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struct Data { qint64 pid; }; |
293 |
if (m_pMemory->create(sizeof(Data))) { |
294 |
m_pMemory->lock(); |
295 |
Data *pData = static_cast<Data *> (m_pMemory->data()); |
296 |
if (pData) { |
297 |
pData->pid = pid; |
298 |
bServer = true; |
299 |
} |
300 |
m_pMemory->unlock(); |
301 |
} |
302 |
else |
303 |
if (m_pMemory->attach()) { |
304 |
m_pMemory->lock(); // maybe not necessary? |
305 |
Data *pData = static_cast<Data *> (m_pMemory->data()); |
306 |
if (pData) |
307 |
bServer = (pData->pid == pid); |
308 |
m_pMemory->unlock(); |
309 |
} |
310 |
if (bServer) { |
311 |
QLocalServer::removeServer(m_sUnique); |
312 |
m_pServer = new QLocalServer(); |
313 |
m_pServer->setSocketOptions(QLocalServer::UserAccessOption); |
314 |
m_pServer->listen(m_sUnique); |
315 |
QObject::connect(m_pServer, |
316 |
SIGNAL(newConnection()), |
317 |
SLOT(newConnectionSlot())); |
318 |
} else { |
319 |
QLocalSocket socket; |
320 |
socket.connectToServer(m_sUnique); |
321 |
if (socket.state() == QLocalSocket::ConnectingState) |
322 |
socket.waitForConnected(200); |
323 |
if (socket.state() == QLocalSocket::ConnectedState) { |
324 |
socket.write(QCoreApplication::arguments().join(' ').toUtf8()); |
325 |
socket.flush(); |
326 |
socket.waitForBytesWritten(200); |
327 |
} |
328 |
} |
329 |
return !bServer; |
330 |
#endif |
331 |
#else |
332 |
return false; |
333 |
#endif // !CONFIG_XUNIQUE |
334 |
} |
335 |
|
336 |
|
337 |
#ifdef CONFIG_XUNIQUE |
338 |
#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0) |
339 |
#ifdef CONFIG_X11 |
340 |
|
341 |
void qsamplerApplication::x11PropertyNotify ( Window w ) |
342 |
{ |
343 |
if (m_pDisplay && m_pWidget && m_wOwner == w) { |
344 |
// Always check whether our property-flag is still around... |
345 |
Atom aType; |
346 |
int iFormat = 0; |
347 |
unsigned long iItems = 0; |
348 |
unsigned long iAfter = 0; |
349 |
unsigned char *pData = 0; |
350 |
if (XGetWindowProperty( |
351 |
m_pDisplay, |
352 |
m_wOwner, |
353 |
m_aUnique, |
354 |
0, 1024, |
355 |
false, |
356 |
m_aUnique, |
357 |
&aType, |
358 |
&iFormat, |
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&iItems, |
360 |
&iAfter, |
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&pData) == Success |
362 |
&& aType == m_aUnique && iItems > 0 && iAfter == 0) { |
363 |
// Avoid repeating it-self... |
364 |
XDeleteProperty(m_pDisplay, m_wOwner, m_aUnique); |
365 |
// Just make it always shows up fine... |
366 |
m_pWidget->show(); |
367 |
m_pWidget->raise(); |
368 |
m_pWidget->activateWindow(); |
369 |
} |
370 |
// Free any left-overs... |
371 |
if (iItems > 0 && pData) |
372 |
XFree(pData); |
373 |
} |
374 |
} |
375 |
|
376 |
|
377 |
bool qsamplerApplication::x11EventFilter ( XEvent *pEv ) |
378 |
{ |
379 |
if (pEv->type == PropertyNotify |
380 |
&& pEv->xproperty.state == PropertyNewValue) |
381 |
x11PropertyNotify(pEv->xproperty.window); |
382 |
return QApplication::x11EventFilter(pEv); |
383 |
} |
384 |
|
385 |
#endif // CONFIG_X11 |
386 |
#else |
387 |
|
388 |
// Local server conection slot. |
389 |
void qsamplerApplication::newConnectionSlot (void) |
390 |
{ |
391 |
QLocalSocket *pSocket = m_pServer->nextPendingConnection(); |
392 |
QObject::connect(pSocket, |
393 |
SIGNAL(readyRead()), |
394 |
SLOT(readyReadSlot())); |
395 |
} |
396 |
|
397 |
// Local server data-ready slot. |
398 |
void qsamplerApplication::readyReadSlot (void) |
399 |
{ |
400 |
QLocalSocket *pSocket = qobject_cast<QLocalSocket *> (sender()); |
401 |
if (pSocket) { |
402 |
const qint64 nread = pSocket->bytesAvailable(); |
403 |
if (nread > 0) { |
404 |
const QByteArray data = pSocket->read(nread); |
405 |
// Just make it always shows up fine... |
406 |
m_pWidget->hide(); |
407 |
m_pWidget->show(); |
408 |
m_pWidget->raise(); |
409 |
m_pWidget->activateWindow(); |
410 |
} |
411 |
} |
412 |
} |
413 |
|
414 |
#endif |
415 |
#endif // CONFIG_XUNIQUE |
416 |
|
417 |
|
418 |
//------------------------------------------------------------------------- |
419 |
// stacktrace - Signal crash handler. |
420 |
// |
421 |
|
422 |
#ifdef CONFIG_STACKTRACE |
423 |
#if defined(__GNUC__) && defined(Q_OS_LINUX) |
424 |
|
425 |
#include <stdio.h> |
426 |
#include <errno.h> |
427 |
#include <signal.h> |
428 |
#include <unistd.h> |
429 |
#include <sys/wait.h> |
430 |
|
431 |
void stacktrace ( int signo ) |
432 |
{ |
433 |
pid_t pid; |
434 |
int rc; |
435 |
int status = 0; |
436 |
char cmd[80]; |
437 |
|
438 |
// Reinstall default handler; prevent race conditions... |
439 |
::signal(signo, SIG_DFL); |
440 |
|
441 |
static const char *shell = "/bin/sh"; |
442 |
static const char *format = "gdb -q --batch --pid=%d" |
443 |
" --eval-command='thread apply all bt'"; |
444 |
|
445 |
snprintf(cmd, sizeof(cmd), format, (int) getpid()); |
446 |
|
447 |
pid = fork(); |
448 |
|
449 |
// Fork failure! |
450 |
if (pid < 0) |
451 |
return; |
452 |
|
453 |
// Fork child... |
454 |
if (pid == 0) { |
455 |
execl(shell, shell, "-c", cmd, nullptr); |
456 |
_exit(1); |
457 |
return; |
458 |
} |
459 |
|
460 |
// Parent here: wait for child to terminate... |
461 |
do { rc = waitpid(pid, &status, 0); } |
462 |
while ((rc < 0) && (errno == EINTR)); |
463 |
|
464 |
// Dispatch any logging, if any... |
465 |
QApplication::processEvents(QEventLoop::AllEvents, 3000); |
466 |
|
467 |
// Make sure everyone terminates... |
468 |
kill(pid, SIGTERM); |
469 |
_exit(1); |
470 |
} |
471 |
|
472 |
#endif |
473 |
#endif |
474 |
|
475 |
|
476 |
//------------------------------------------------------------------------- |
477 |
// main - The main program trunk. |
478 |
// |
479 |
|
480 |
int main ( int argc, char **argv ) |
481 |
{ |
482 |
Q_INIT_RESOURCE(qsampler); |
483 |
#ifdef CONFIG_STACKTRACE |
484 |
#if defined(__GNUC__) && defined(Q_OS_LINUX) |
485 |
::signal(SIGILL, stacktrace); |
486 |
::signal(SIGFPE, stacktrace); |
487 |
::signal(SIGSEGV, stacktrace); |
488 |
::signal(SIGABRT, stacktrace); |
489 |
::signal(SIGBUS, stacktrace); |
490 |
#endif |
491 |
#endif |
492 |
#if defined(Q_OS_LINUX) |
493 |
::setenv("QT_QPA_PLATFORM", "xcb", 0); |
494 |
#endif |
495 |
#if QT_VERSION >= QT_VERSION_CHECK(5, 6, 0) |
496 |
#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0) |
497 |
QApplication::setAttribute(Qt::AA_EnableHighDpiScaling); |
498 |
#endif |
499 |
#endif |
500 |
qsamplerApplication app(argc, argv); |
501 |
|
502 |
#if defined(__APPLE__) // Toshi Nagata 20080105 |
503 |
{ |
504 |
// Set the plugin path to @exetutable_path/../plugins |
505 |
QDir dir(QApplication::applicationDirPath()); |
506 |
dir.cdUp(); // "Contents" directory |
507 |
QApplication::setLibraryPaths(QStringList(dir.absolutePath() + "/plugins")); |
508 |
|
509 |
// Set the PATH environment variable to include @executable_path/../../.. |
510 |
dir.cdUp(); |
511 |
dir.cdUp(); |
512 |
QString path(getenv("PATH")); |
513 |
path = dir.absolutePath() + ":" + path; |
514 |
setenv("PATH", path.toUtf8().constData(), 1); |
515 |
} |
516 |
#endif |
517 |
|
518 |
// Construct default settings; override with command line arguments. |
519 |
QSampler::Options options; |
520 |
if (!options.parse_args(app.arguments())) { |
521 |
app.quit(); |
522 |
return 1; |
523 |
} |
524 |
|
525 |
// Have another instance running? |
526 |
if (app.setup()) { |
527 |
app.quit(); |
528 |
return 2; |
529 |
} |
530 |
|
531 |
// Special custom styles... |
532 |
if (QDir(CONFIG_PLUGINSDIR).exists()) |
533 |
app.addLibraryPath(CONFIG_PLUGINSDIR); |
534 |
if (!options.sCustomStyleTheme.isEmpty()) |
535 |
app.setStyle(QStyleFactory::create(options.sCustomStyleTheme)); |
536 |
|
537 |
// Custom color theme (eg. "KXStudio")... |
538 |
QPalette pal(app.palette()); |
539 |
if (QSampler::PaletteForm::namedPalette( |
540 |
&options.settings(), options.sCustomColorTheme, pal)) |
541 |
app.setPalette(pal); |
542 |
|
543 |
// Set default base font... |
544 |
if (options.iBaseFontSize > 0) |
545 |
app.setFont(QFont(app.font().family(), options.iBaseFontSize)); |
546 |
|
547 |
// Construct, setup and show the main form. |
548 |
QSampler::MainForm w; |
549 |
w.setup(&options); |
550 |
w.show(); |
551 |
|
552 |
// Settle this one as application main widget... |
553 |
app.setMainWidget(&w); |
554 |
|
555 |
// Register the quit signal/slot. |
556 |
// app.connect(&app, SIGNAL(lastWindowClosed()), &app, SLOT(quit())); |
557 |
|
558 |
return app.exec(); |
559 |
} |
560 |
|
561 |
|
562 |
// end of qsampler.cpp |
563 |
|