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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()); |
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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()); |
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if (pData) |
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bServer = (pData->pid == pid); |
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m_pMemory->unlock(); |
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} |
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if (bServer) { |
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QLocalServer::removeServer(m_sUnique); |
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m_pServer = new QLocalServer(); |
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m_pServer->setSocketOptions(QLocalServer::UserAccessOption); |
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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); |
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if (socket.state() == QLocalSocket::ConnectingState) |
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socket.waitForConnected(200); |
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if (socket.state() == QLocalSocket::ConnectedState) { |
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socket.write(QCoreApplication::arguments().join(' ').toUtf8()); |
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socket.flush(); |
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socket.waitForBytesWritten(200); |
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} |
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} |
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return !bServer; |
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#endif |
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#else |
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return false; |
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#endif // !CONFIG_XUNIQUE |
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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) |
333 |
#ifdef CONFIG_X11 |
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|
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void qsamplerApplication::x11PropertyNotify ( Window w ) |
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{ |
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if (m_pDisplay && m_pWidget && m_wOwner == w) { |
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// Always check whether our property-flag is still around... |
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Atom aType; |
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int iFormat = 0; |
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unsigned long iItems = 0; |
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unsigned long iAfter = 0; |
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unsigned char *pData = 0; |
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if (XGetWindowProperty( |
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m_pDisplay, |
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m_wOwner, |
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m_aUnique, |
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0, 1024, |
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false, |
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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) { |
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// Avoid repeating it-self... |
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XDeleteProperty(m_pDisplay, m_wOwner, m_aUnique); |
359 |
// Just make it always shows up fine... |
360 |
m_pWidget->show(); |
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m_pWidget->raise(); |
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m_pWidget->activateWindow(); |
363 |
} |
364 |
// Free any left-overs... |
365 |
if (iItems > 0 && pData) |
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XFree(pData); |
367 |
} |
368 |
} |
369 |
|
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|
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bool qsamplerApplication::x11EventFilter ( XEvent *pEv ) |
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{ |
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if (pEv->type == PropertyNotify |
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&& pEv->xproperty.state == PropertyNewValue) |
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x11PropertyNotify(pEv->xproperty.window); |
376 |
return QApplication::x11EventFilter(pEv); |
377 |
} |
378 |
|
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#endif // CONFIG_X11 |
380 |
#else |
381 |
|
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// Local server conection slot. |
383 |
void qsamplerApplication::newConnectionSlot (void) |
384 |
{ |
385 |
QLocalSocket *pSocket = m_pServer->nextPendingConnection(); |
386 |
QObject::connect(pSocket, |
387 |
SIGNAL(readyRead()), |
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SLOT(readyReadSlot())); |
389 |
} |
390 |
|
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// Local server data-ready slot. |
392 |
void qsamplerApplication::readyReadSlot (void) |
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{ |
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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(); |
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m_pWidget->activateWindow(); |
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} |
405 |
} |
406 |
} |
407 |
|
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#endif |
409 |
#endif // CONFIG_XUNIQUE |
410 |
|
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|
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//------------------------------------------------------------------------- |
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 |
|