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// Singleton application instance stuff (Qt/X11 only atm.) |
// Singleton application instance stuff (Qt/X11 only atm.) |
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// |
// |
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#ifdef CONFIG_X11 |
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#ifdef CONFIG_XUNIQUE |
#ifdef CONFIG_XUNIQUE |
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#include <unistd.h> /* for gethostname() */ |
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#include <X11/Xatom.h> |
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#include <X11/Xlib.h> |
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#define QSAMPLER_XUNIQUE "qsamplerApplication" |
#define QSAMPLER_XUNIQUE "qsamplerApplication" |
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#if QT_VERSION >= 0x050100 |
#if QT_VERSION < 0x050000 |
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#ifdef CONFIG_X11 |
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#include <xcb/xcb.h> |
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#include <xcb/xproto.h> |
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#include <QAbstractNativeEventFilter> |
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class qsamplerXcbEventFilter : public QAbstractNativeEventFilter |
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{ |
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public: |
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// Constructor. |
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qsamplerXcbEventFilter(qsamplerApplication *pApp) |
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: QAbstractNativeEventFilter(), m_pApp(pApp) {} |
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// XCB event filter (virtual processor). |
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bool nativeEventFilter(const QByteArray& eventType, void *message, long *) |
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{ |
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if (eventType == "xcb_generic_event_t") { |
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xcb_property_notify_event_t *pEv |
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= static_cast<xcb_property_notify_event_t *> (message); |
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if ((pEv->response_type & ~0x80) == XCB_PROPERTY_NOTIFY |
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&& pEv->state == XCB_PROPERTY_NEW_VALUE) |
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m_pApp->x11PropertyNotify(pEv->window); |
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} |
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return false; |
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} |
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private: |
#include <unistd.h> /* for gethostname() */ |
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// Instance variable. |
#include <X11/Xatom.h> |
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qsamplerApplication *m_pApp; |
#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 |
#endif |
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#endif // CONFIG_XUNIQUE |
#endif // CONFIG_XUNIQUE |
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#endif // CONFIG_X11 |
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// Constructor. |
// Constructor. |
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} |
} |
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} |
} |
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} |
} |
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#ifdef CONFIG_X11 |
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#ifdef CONFIG_XUNIQUE |
#ifdef CONFIG_XUNIQUE |
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#if QT_VERSION < 0x050000 |
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#ifdef CONFIG_X11 |
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m_pDisplay = NULL; |
m_pDisplay = NULL; |
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m_aUnique = 0; |
m_aUnique = 0; |
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m_wOwner = 0; |
m_wOwner = 0; |
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#if QT_VERSION >= 0x050100 |
#endif // CONFIG_X11 |
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m_pXcbEventFilter = new qsamplerXcbEventFilter(this); |
#else |
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installNativeEventFilter(m_pXcbEventFilter); |
m_pMemory = NULL; |
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m_pServer = NULL; |
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#endif |
#endif |
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#endif // CONFIG_XUNIQUE |
#endif // CONFIG_XUNIQUE |
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#endif // CONFIG_X11 |
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} |
} |
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// Destructor. |
// Destructor. |
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qsamplerApplication::~qsamplerApplication (void) |
qsamplerApplication::~qsamplerApplication (void) |
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{ |
{ |
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#ifdef CONFIG_X11 |
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#ifdef CONFIG_XUNIQUE |
#ifdef CONFIG_XUNIQUE |
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#if QT_VERSION >= 0x050100 |
#if QT_VERSION >= 0x050000 |
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removeNativeEventFilter(m_pXcbEventFilter); |
if (m_pServer) { |
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delete m_pXcbEventFilter; |
m_pServer->close(); |
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delete m_pServer; |
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m_pServer = NULL; |
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} |
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if (m_pMemory) { |
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delete m_pMemory; |
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m_pMemory = NULL; |
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} |
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#endif |
#endif |
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#endif // CONFIG_XUNIQUE |
#endif // CONFIG_XUNIQUE |
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#endif // CONFIG_X11 |
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if (m_pMyTranslator) delete m_pMyTranslator; |
if (m_pMyTranslator) delete m_pMyTranslator; |
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if (m_pQtTranslator) delete m_pQtTranslator; |
if (m_pQtTranslator) delete m_pQtTranslator; |
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} |
} |
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void qsamplerApplication::setMainWidget ( QWidget *pWidget ) |
void qsamplerApplication::setMainWidget ( QWidget *pWidget ) |
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{ |
{ |
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m_pWidget = pWidget; |
m_pWidget = pWidget; |
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#ifdef CONFIG_X11 |
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#ifdef CONFIG_XUNIQUE |
#ifdef CONFIG_XUNIQUE |
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#if QT_VERSION < 0x050000 |
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#ifdef CONFIG_X11 |
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m_wOwner = m_pWidget->winId(); |
m_wOwner = m_pWidget->winId(); |
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if (m_pDisplay && m_wOwner) { |
if (m_pDisplay && m_wOwner) { |
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XGrabServer(m_pDisplay); |
XGrabServer(m_pDisplay); |
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XSetSelectionOwner(m_pDisplay, m_aUnique, m_wOwner, CurrentTime); |
XSetSelectionOwner(m_pDisplay, m_aUnique, m_wOwner, CurrentTime); |
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XUngrabServer(m_pDisplay); |
XUngrabServer(m_pDisplay); |
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} |
} |
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#endif // CONFIG_XUNIQUE |
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#endif // CONFIG_X11 |
#endif // CONFIG_X11 |
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#endif |
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#endif // CONFIG_XUNIQUE |
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} |
} |
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// and raise its proper main widget... |
// and raise its proper main widget... |
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bool qsamplerApplication::setup (void) |
bool qsamplerApplication::setup (void) |
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{ |
{ |
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#ifdef CONFIG_X11 |
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#ifdef CONFIG_XUNIQUE |
#ifdef CONFIG_XUNIQUE |
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#if QT_VERSION >= 0x050100 |
#if QT_VERSION < 0x050000 |
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if (!QX11Info::isPlatformX11()) |
#ifdef CONFIG_X11 |
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return false; |
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#endif |
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m_pDisplay = QX11Info::display(); |
m_pDisplay = QX11Info::display(); |
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if (m_pDisplay) { |
if (m_pDisplay) { |
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QString sUnique = QSAMPLER_XUNIQUE; |
QString sUnique = QSAMPLER_XUNIQUE; |
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return true; |
return true; |
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} |
} |
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} |
} |
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#endif // CONFIG_XUNIQUE |
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#endif // CONFIG_X11 |
#endif // CONFIG_X11 |
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return false; |
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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#ifdef CONFIG_X11 |
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#ifdef CONFIG_XUNIQUE |
#ifdef CONFIG_XUNIQUE |
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#if QT_VERSION < 0x050000 |
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#ifdef CONFIG_X11 |
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void qsamplerApplication::x11PropertyNotify ( Window w ) |
void qsamplerApplication::x11PropertyNotify ( Window w ) |
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{ |
{ |
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if (m_pDisplay && m_pWidget && m_wOwner == w) { |
if (m_pDisplay && m_pWidget && m_wOwner == w) { |
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} |
} |
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#if QT_VERSION < 0x050000 |
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bool qsamplerApplication::x11EventFilter ( XEvent *pEv ) |
bool qsamplerApplication::x11EventFilter ( XEvent *pEv ) |
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{ |
{ |
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if (pEv->type == PropertyNotify |
if (pEv->type == PropertyNotify |
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x11PropertyNotify(pEv->xproperty.window); |
x11PropertyNotify(pEv->xproperty.window); |
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return QApplication::x11EventFilter(pEv); |
return QApplication::x11EventFilter(pEv); |
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} |
} |
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#endif |
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#endif // CONFIG_XUNIQUE |
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#endif // CONFIG_X11 |
#endif // CONFIG_X11 |
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#else |
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// Local server conection slot. |
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void qsamplerApplication::newConnectionSlot (void) |
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{ |
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QLocalSocket *pSocket = m_pServer->nextPendingConnection(); |
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QObject::connect(pSocket, |
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SIGNAL(readyRead()), |
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SLOT(readyReadSlot())); |
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} |
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// Local server data-ready slot. |
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void qsamplerApplication::readyReadSlot (void) |
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{ |
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QLocalSocket *pSocket = qobject_cast<QLocalSocket *> (sender()); |
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if (pSocket) { |
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const qint64 nread = pSocket->bytesAvailable(); |
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if (nread > 0) { |
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QByteArray data = pSocket->read(nread); |
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// Just make it always shows up fine... |
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m_pWidget->hide(); |
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m_pWidget->show(); |
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m_pWidget->raise(); |
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m_pWidget->activateWindow(); |
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} |
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} |
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} |
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#endif |
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#endif // CONFIG_XUNIQUE |
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//------------------------------------------------------------------------- |
//------------------------------------------------------------------------- |