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// qsampler.cpp |
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// |
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/**************************************************************************** |
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Copyright (C) 2004-2020, 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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#else |
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#define CONFIG_PLUGINSDIR CONFIG_LIBDIR "/qt5/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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QString sLocPath = QLibraryInfo::location(QLibraryInfo::TranslationsPath); |
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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 = 0; |
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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 = 0; |
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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 |
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m_sUnique = QCoreApplication::applicationName(); |
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m_sUnique += '@'; |
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m_sUnique += QHostInfo::localHostName(); |
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#ifdef Q_OS_UNIX |
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m_pMemory = new QSharedMemory(m_sUnique); |
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m_pMemory->attach(); |
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delete m_pMemory; |
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#endif |
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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; }; |
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if (m_pMemory->create(sizeof(Data))) { |
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m_pMemory->lock(); |
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Data *pData = static_cast<Data *> (m_pMemory->data()); |
| 290 |
if (pData) { |
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pData->pid = pid; |
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bServer = true; |
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} |
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m_pMemory->unlock(); |
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} |
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else |
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if (m_pMemory->attach()) { |
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m_pMemory->lock(); // maybe not necessary? |
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Data *pData = static_cast<Data *> (m_pMemory->data()); |
| 300 |
if (pData) |
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bServer = (pData->pid == pid); |
| 302 |
m_pMemory->unlock(); |
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} |
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if (bServer) { |
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QLocalServer::removeServer(m_sUnique); |
| 306 |
m_pServer = new QLocalServer(); |
| 307 |
m_pServer->setSocketOptions(QLocalServer::UserAccessOption); |
| 308 |
m_pServer->listen(m_sUnique); |
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QObject::connect(m_pServer, |
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SIGNAL(newConnection()), |
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SLOT(newConnectionSlot())); |
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} else { |
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QLocalSocket socket; |
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socket.connectToServer(m_sUnique); |
| 315 |
if (socket.state() == QLocalSocket::ConnectingState) |
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socket.waitForConnected(200); |
| 317 |
if (socket.state() == QLocalSocket::ConnectedState) { |
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socket.write(QCoreApplication::arguments().join(' ').toUtf8()); |
| 319 |
socket.flush(); |
| 320 |
socket.waitForBytesWritten(200); |
| 321 |
} |
| 322 |
} |
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return !bServer; |
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#endif |
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#else |
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return false; |
| 327 |
#endif // !CONFIG_XUNIQUE |
| 328 |
} |
| 329 |
|
| 330 |
|
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#ifdef CONFIG_XUNIQUE |
| 332 |
#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0) |
| 333 |
#ifdef CONFIG_X11 |
| 334 |
|
| 335 |
void qsamplerApplication::x11PropertyNotify ( Window w ) |
| 336 |
{ |
| 337 |
if (m_pDisplay && m_pWidget && m_wOwner == w) { |
| 338 |
// Always check whether our property-flag is still around... |
| 339 |
Atom aType; |
| 340 |
int iFormat = 0; |
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unsigned long iItems = 0; |
| 342 |
unsigned long iAfter = 0; |
| 343 |
unsigned char *pData = 0; |
| 344 |
if (XGetWindowProperty( |
| 345 |
m_pDisplay, |
| 346 |
m_wOwner, |
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m_aUnique, |
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0, 1024, |
| 349 |
false, |
| 350 |
m_aUnique, |
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&aType, |
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&iFormat, |
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&iItems, |
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&iAfter, |
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&pData) == Success |
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&& aType == m_aUnique && iItems > 0 && iAfter == 0) { |
| 357 |
// Avoid repeating it-self... |
| 358 |
XDeleteProperty(m_pDisplay, m_wOwner, m_aUnique); |
| 359 |
// Just make it always shows up fine... |
| 360 |
m_pWidget->show(); |
| 361 |
m_pWidget->raise(); |
| 362 |
m_pWidget->activateWindow(); |
| 363 |
} |
| 364 |
// Free any left-overs... |
| 365 |
if (iItems > 0 && pData) |
| 366 |
XFree(pData); |
| 367 |
} |
| 368 |
} |
| 369 |
|
| 370 |
|
| 371 |
bool qsamplerApplication::x11EventFilter ( XEvent *pEv ) |
| 372 |
{ |
| 373 |
if (pEv->type == PropertyNotify |
| 374 |
&& pEv->xproperty.state == PropertyNewValue) |
| 375 |
x11PropertyNotify(pEv->xproperty.window); |
| 376 |
return QApplication::x11EventFilter(pEv); |
| 377 |
} |
| 378 |
|
| 379 |
#endif // CONFIG_X11 |
| 380 |
#else |
| 381 |
|
| 382 |
// Local server conection slot. |
| 383 |
void qsamplerApplication::newConnectionSlot (void) |
| 384 |
{ |
| 385 |
QLocalSocket *pSocket = m_pServer->nextPendingConnection(); |
| 386 |
QObject::connect(pSocket, |
| 387 |
SIGNAL(readyRead()), |
| 388 |
SLOT(readyReadSlot())); |
| 389 |
} |
| 390 |
|
| 391 |
// Local server data-ready slot. |
| 392 |
void qsamplerApplication::readyReadSlot (void) |
| 393 |
{ |
| 394 |
QLocalSocket *pSocket = qobject_cast<QLocalSocket *> (sender()); |
| 395 |
if (pSocket) { |
| 396 |
const qint64 nread = pSocket->bytesAvailable(); |
| 397 |
if (nread > 0) { |
| 398 |
const QByteArray data = pSocket->read(nread); |
| 399 |
// Just make it always shows up fine... |
| 400 |
m_pWidget->hide(); |
| 401 |
m_pWidget->show(); |
| 402 |
m_pWidget->raise(); |
| 403 |
m_pWidget->activateWindow(); |
| 404 |
} |
| 405 |
} |
| 406 |
} |
| 407 |
|
| 408 |
#endif |
| 409 |
#endif // CONFIG_XUNIQUE |
| 410 |
|
| 411 |
|
| 412 |
//------------------------------------------------------------------------- |
| 413 |
// stacktrace - Signal crash handler. |
| 414 |
// |
| 415 |
|
| 416 |
#ifdef CONFIG_STACKTRACE |
| 417 |
#if defined(__GNUC__) && defined(Q_OS_LINUX) |
| 418 |
|
| 419 |
#include <stdio.h> |
| 420 |
#include <errno.h> |
| 421 |
#include <signal.h> |
| 422 |
#include <unistd.h> |
| 423 |
#include <sys/wait.h> |
| 424 |
|
| 425 |
void stacktrace ( int signo ) |
| 426 |
{ |
| 427 |
pid_t pid; |
| 428 |
int rc; |
| 429 |
int status = 0; |
| 430 |
char cmd[80]; |
| 431 |
|
| 432 |
// Reinstall default handler; prevent race conditions... |
| 433 |
::signal(signo, SIG_DFL); |
| 434 |
|
| 435 |
static const char *shell = "/bin/sh"; |
| 436 |
static const char *format = "gdb -q --batch --pid=%d" |
| 437 |
" --eval-command='thread apply all bt'"; |
| 438 |
|
| 439 |
snprintf(cmd, sizeof(cmd), format, (int) getpid()); |
| 440 |
|
| 441 |
pid = fork(); |
| 442 |
|
| 443 |
// Fork failure! |
| 444 |
if (pid < 0) |
| 445 |
return; |
| 446 |
|
| 447 |
// Fork child... |
| 448 |
if (pid == 0) { |
| 449 |
execl(shell, shell, "-c", cmd, nullptr); |
| 450 |
_exit(1); |
| 451 |
return; |
| 452 |
} |
| 453 |
|
| 454 |
// Parent here: wait for child to terminate... |
| 455 |
do { rc = waitpid(pid, &status, 0); } |
| 456 |
while ((rc < 0) && (errno == EINTR)); |
| 457 |
|
| 458 |
// Dispatch any logging, if any... |
| 459 |
QApplication::processEvents(QEventLoop::AllEvents, 3000); |
| 460 |
|
| 461 |
// Make sure everyone terminates... |
| 462 |
kill(pid, SIGTERM); |
| 463 |
_exit(1); |
| 464 |
} |
| 465 |
|
| 466 |
#endif |
| 467 |
#endif |
| 468 |
|
| 469 |
|
| 470 |
//------------------------------------------------------------------------- |
| 471 |
// main - The main program trunk. |
| 472 |
// |
| 473 |
|
| 474 |
int main ( int argc, char **argv ) |
| 475 |
{ |
| 476 |
Q_INIT_RESOURCE(qsampler); |
| 477 |
#ifdef CONFIG_STACKTRACE |
| 478 |
#if defined(__GNUC__) && defined(Q_OS_LINUX) |
| 479 |
::signal(SIGILL, stacktrace); |
| 480 |
::signal(SIGFPE, stacktrace); |
| 481 |
::signal(SIGSEGV, stacktrace); |
| 482 |
::signal(SIGABRT, stacktrace); |
| 483 |
::signal(SIGBUS, stacktrace); |
| 484 |
#endif |
| 485 |
#endif |
| 486 |
#if QT_VERSION >= QT_VERSION_CHECK(5, 6, 0) |
| 487 |
QApplication::setAttribute(Qt::AA_EnableHighDpiScaling); |
| 488 |
#endif |
| 489 |
qsamplerApplication app(argc, argv); |
| 490 |
|
| 491 |
#if defined(__APPLE__) // Toshi Nagata 20080105 |
| 492 |
{ |
| 493 |
// Set the plugin path to @exetutable_path/../plugins |
| 494 |
QDir dir(QApplication::applicationDirPath()); |
| 495 |
dir.cdUp(); // "Contents" directory |
| 496 |
QApplication::setLibraryPaths(QStringList(dir.absolutePath() + "/plugins")); |
| 497 |
|
| 498 |
// Set the PATH environment variable to include @executable_path/../../.. |
| 499 |
dir.cdUp(); |
| 500 |
dir.cdUp(); |
| 501 |
QString path(getenv("PATH")); |
| 502 |
path = dir.absolutePath() + ":" + path; |
| 503 |
setenv("PATH", path.toUtf8().constData(), 1); |
| 504 |
} |
| 505 |
#endif |
| 506 |
|
| 507 |
// Construct default settings; override with command line arguments. |
| 508 |
QSampler::Options options; |
| 509 |
if (!options.parse_args(app.arguments())) { |
| 510 |
app.quit(); |
| 511 |
return 1; |
| 512 |
} |
| 513 |
|
| 514 |
// Have another instance running? |
| 515 |
if (app.setup()) { |
| 516 |
app.quit(); |
| 517 |
return 2; |
| 518 |
} |
| 519 |
|
| 520 |
// Special custom styles... |
| 521 |
if (QDir(CONFIG_PLUGINSDIR).exists()) |
| 522 |
app.addLibraryPath(CONFIG_PLUGINSDIR); |
| 523 |
if (!options.sCustomStyleTheme.isEmpty()) |
| 524 |
app.setStyle(QStyleFactory::create(options.sCustomStyleTheme)); |
| 525 |
|
| 526 |
// Custom color theme (eg. "KXStudio")... |
| 527 |
QPalette pal(app.palette()); |
| 528 |
if (QSampler::PaletteForm::namedPalette( |
| 529 |
&options.settings(), options.sCustomColorTheme, pal)) |
| 530 |
app.setPalette(pal); |
| 531 |
|
| 532 |
// Set default base font... |
| 533 |
if (options.iBaseFontSize > 0) |
| 534 |
app.setFont(QFont(app.font().family(), options.iBaseFontSize)); |
| 535 |
|
| 536 |
// Construct, setup and show the main form. |
| 537 |
QSampler::MainForm w; |
| 538 |
w.setup(&options); |
| 539 |
w.show(); |
| 540 |
|
| 541 |
// Settle this one as application main widget... |
| 542 |
app.setMainWidget(&w); |
| 543 |
|
| 544 |
// Register the quit signal/slot. |
| 545 |
// app.connect(&app, SIGNAL(lastWindowClosed()), &app, SLOT(quit())); |
| 546 |
|
| 547 |
return app.exec(); |
| 548 |
} |
| 549 |
|
| 550 |
|
| 551 |
// end of qsampler.cpp |
| 552 |
|
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