// qsamplerMessages.cpp // /**************************************************************************** Copyright (C) 2004-2013, rncbc aka Rui Nuno Capela. All rights reserved. Copyright (C) 2007, Christian Schoenebeck This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *****************************************************************************/ #include "qsamplerAbout.h" #include "qsamplerMessages.h" #include #include #include #include #include #include #include #include #include #if !defined(WIN32) #include #endif namespace QSampler { // The default maximum number of message lines. #define QSAMPLER_MESSAGES_MAXLINES 1000 // Notification pipe descriptors #define QSAMPLER_MESSAGES_FDNIL -1 #define QSAMPLER_MESSAGES_FDREAD 0 #define QSAMPLER_MESSAGES_FDWRITE 1 //------------------------------------------------------------------------- // QSampler::Messages - Messages log dockable window. // // Constructor. Messages::Messages ( QWidget *pParent ) : QDockWidget(pParent) { // Surely a name is crucial (e.g.for storing geometry settings) QDockWidget::setObjectName("qsamplerMessages"); // Intialize stdout capture stuff. m_pStdoutNotifier = NULL; m_fdStdout[QSAMPLER_MESSAGES_FDREAD] = QSAMPLER_MESSAGES_FDNIL; m_fdStdout[QSAMPLER_MESSAGES_FDWRITE] = QSAMPLER_MESSAGES_FDNIL; // Create local text view widget. m_pMessagesTextView = new QTextEdit(this); // QFont font(m_pMessagesTextView->font()); // font.setFamily("Fixed"); // m_pMessagesTextView->setFont(font); m_pMessagesTextView->setLineWrapMode(QTextEdit::NoWrap); m_pMessagesTextView->setReadOnly(true); m_pMessagesTextView->setUndoRedoEnabled(false); // m_pMessagesTextView->setTextFormat(Qt::LogText); // Initialize default message limit. m_iMessagesLines = 0; setMessagesLimit(QSAMPLER_MESSAGES_MAXLINES); m_pMessagesLog = NULL; // Prepare the dockable window stuff. QDockWidget::setWidget(m_pMessagesTextView); QDockWidget::setFeatures(QDockWidget::AllDockWidgetFeatures); QDockWidget::setAllowedAreas( Qt::TopDockWidgetArea | Qt::BottomDockWidgetArea); // Some specialties to this kind of dock window... QDockWidget::setMinimumHeight(120); // Finally set the default caption and tooltip. const QString& sCaption = tr("Messages"); QDockWidget::setWindowTitle(sCaption); // QDockWidget::setWindowIcon(QIcon(":/icons/qsamplerMessages.png")); QDockWidget::setToolTip(sCaption); } // Destructor. Messages::~Messages (void) { // Turn off and close logging. setLogging(false); // No more notifications. if (m_pStdoutNotifier) delete m_pStdoutNotifier; // No need to delete child widgets, Qt does it all for us. } #if QT_VERSION < 0x040300 void Messages::showEvent ( QShowEvent *pEvent ) { QDockWidget::showEvent(pEvent); emit visibilityChanged(isVisible()); } #endif // Own stdout/stderr socket notifier slot. void Messages::stdoutNotify ( int fd ) { #if !defined(WIN32) char achBuffer[1024]; int cchBuffer = ::read(fd, achBuffer, sizeof(achBuffer) - 1); if (cchBuffer > 0) { achBuffer[cchBuffer] = (char) 0; appendStdoutBuffer(achBuffer); } #endif } // Stdout buffer handler -- now splitted by complete new-lines... void Messages::appendStdoutBuffer ( const QString& s ) { m_sStdoutBuffer.append(s); int iLength = m_sStdoutBuffer.lastIndexOf('\n'); if (iLength > 0) { QString sTemp = m_sStdoutBuffer.left(iLength); m_sStdoutBuffer.remove(0, iLength + 1); QStringList list = sTemp.split('\n'); QStringListIterator iter(list); while (iter.hasNext()) appendMessagesText(iter.next()); } } // Stdout flusher -- show up any unfinished line... void Messages::flushStdoutBuffer (void) { if (!m_sStdoutBuffer.isEmpty()) { appendMessagesText(m_sStdoutBuffer); m_sStdoutBuffer.truncate(0); } } // Stdout capture accessors. bool Messages::isCaptureEnabled (void) { return (bool) (m_pStdoutNotifier != NULL); } void Messages::setCaptureEnabled ( bool bCapture ) { // Flush current buffer. flushStdoutBuffer(); #if !defined(WIN32) // Destroy if already enabled. if (!bCapture && m_pStdoutNotifier) { delete m_pStdoutNotifier; m_pStdoutNotifier = NULL; // Close the notification pipes. if (m_fdStdout[QSAMPLER_MESSAGES_FDREAD] != QSAMPLER_MESSAGES_FDNIL) { ::close(m_fdStdout[QSAMPLER_MESSAGES_FDREAD]); m_fdStdout[QSAMPLER_MESSAGES_FDREAD] = QSAMPLER_MESSAGES_FDNIL; } if (m_fdStdout[QSAMPLER_MESSAGES_FDREAD] != QSAMPLER_MESSAGES_FDNIL) { ::close(m_fdStdout[QSAMPLER_MESSAGES_FDREAD]); m_fdStdout[QSAMPLER_MESSAGES_FDREAD] = QSAMPLER_MESSAGES_FDNIL; } } // Are we going to make up the capture? if (bCapture && m_pStdoutNotifier == NULL && ::pipe(m_fdStdout) == 0) { ::dup2(m_fdStdout[QSAMPLER_MESSAGES_FDWRITE], STDOUT_FILENO); ::dup2(m_fdStdout[QSAMPLER_MESSAGES_FDWRITE], STDERR_FILENO); m_pStdoutNotifier = new QSocketNotifier( m_fdStdout[QSAMPLER_MESSAGES_FDREAD], QSocketNotifier::Read, this); QObject::connect(m_pStdoutNotifier, SIGNAL(activated(int)), SLOT(stdoutNotify(int))); } #endif } // Message font accessors. QFont Messages::messagesFont (void) { return m_pMessagesTextView->font(); } void Messages::setMessagesFont ( const QFont& font ) { m_pMessagesTextView->setFont(font); } // Maximum number of message lines accessors. int Messages::messagesLimit (void) { return m_iMessagesLimit; } void Messages::setMessagesLimit ( int iMessagesLimit ) { m_iMessagesLimit = iMessagesLimit; m_iMessagesHigh = iMessagesLimit + (iMessagesLimit / 3); } // Messages logging stuff. bool Messages::isLogging (void) const { return (m_pMessagesLog != NULL); } void Messages::setLogging ( bool bEnabled, const QString& sFilename ) { if (m_pMessagesLog) { appendMessages(tr("Logging stopped --- %1 ---") .arg(QDateTime::currentDateTime().toString())); m_pMessagesLog->close(); delete m_pMessagesLog; m_pMessagesLog = NULL; } if (bEnabled) { m_pMessagesLog = new QFile(sFilename); if (m_pMessagesLog->open(QIODevice::Text | QIODevice::Append)) { appendMessages(tr("Logging started --- %1 ---") .arg(QDateTime::currentDateTime().toString())); } else { delete m_pMessagesLog; m_pMessagesLog = NULL; } } } // Messages log output method. void Messages::appendMessagesLog ( const QString& s ) { if (m_pMessagesLog) { QTextStream(m_pMessagesLog) << s << endl; m_pMessagesLog->flush(); } } // Messages widget output method. void Messages::appendMessagesLine ( const QString& s ) { // Check for message line limit... if (m_iMessagesLines > m_iMessagesHigh) { m_pMessagesTextView->setUpdatesEnabled(false); QTextCursor textCursor(m_pMessagesTextView->document()->begin()); while (m_iMessagesLines > m_iMessagesLimit) { // Move cursor extending selection // from start to next line-block... textCursor.movePosition( QTextCursor::NextBlock, QTextCursor::KeepAnchor); m_iMessagesLines--; } // Remove the excessive line-blocks... textCursor.removeSelectedText(); m_pMessagesTextView->setUpdatesEnabled(true); } m_pMessagesTextView->append(s); m_iMessagesLines++; } // The main utility methods. void Messages::appendMessages ( const QString& s ) { appendMessagesColor(s, "#999999"); } void Messages::appendMessagesColor ( const QString& s, const QString &c ) { QString sText = QTime::currentTime().toString("hh:mm:ss.zzz") + ' ' + s; appendMessagesLine("" + sText + ""); appendMessagesLog(sText); } void Messages::appendMessagesText ( const QString& s ) { appendMessagesLine(s); appendMessagesLog(s); } // History reset. void Messages::clear (void) { m_iMessagesLines = 0; m_pMessagesTextView->clear(); } } // namespace QSampler // end of qsamplerMessages.cpp