/[svn]/qsampler/trunk/src/qsamplerMessages.cpp
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revision 772 by capela, Tue Sep 13 14:00:22 2005 UTC revision 3759 by capela, Sat Mar 28 00:28:13 2020 UTC
# Line 1  Line 1 
1  // qsamplerMessages.cpp  // qsamplerMessages.cpp
2  //  //
3  /****************************************************************************  /****************************************************************************
4     Copyright (C) 2003-2005, rncbc aka Rui Nuno Capela. All rights reserved.     Copyright (C) 2004-2020, rncbc aka Rui Nuno Capela. All rights reserved.
5       Copyright (C) 2007, Christian Schoenebeck
6    
7     This program is free software; you can redistribute it and/or     This program is free software; you can redistribute it and/or
8     modify it under the terms of the GNU General Public License     modify it under the terms of the GNU General Public License
# Line 13  Line 14 
14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15     GNU General Public License for more details.     GNU General Public License for more details.
16    
17     You should have received a copy of the GNU General Public License     You should have received a copy of the GNU General Public License along
18     along with this program; if not, write to the Free Software     with this program; if not, write to the Free Software Foundation, Inc.,
19     Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.     51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20    
21  *****************************************************************************/  *****************************************************************************/
22    
23    #include "qsamplerAbout.h"
24  #include "qsamplerMessages.h"  #include "qsamplerMessages.h"
25    
26  #include <qsocketnotifier.h>  #include <QSocketNotifier>
 #include <qstringlist.h>  
 #include <qtextedit.h>  
 #include <qdatetime.h>  
 #include <qtooltip.h>  
 #include <qpixmap.h>  
27    
28  #include "config.h"  #include <QFile>
29    #include <QTextEdit>
30    #include <QTextCursor>
31    #include <QTextStream>
32    #include <QTextBlock>
33    #include <QScrollBar>
34    #include <QDateTime>
35    #include <QIcon>
36    
37  #if !defined(WIN32)  #if !defined(__WIN32__) && !defined(_WIN32) && !defined(WIN32)
38  #include <unistd.h>  #include <unistd.h>
39    #include <fcntl.h>
40  #endif  #endif
41    
42    
43    // Deprecated QTextStreamFunctions/Qt namespaces workaround.
44    #if QT_VERSION >= QT_VERSION_CHECK(5, 15, 0)
45    #define endl    Qt::endl
46    #endif
47    
48    
49    namespace QSampler {
50    
51  // The default maximum number of message lines.  // The default maximum number of message lines.
52  #define QSAMPLER_MESSAGES_MAXLINES  1000  #define QSAMPLER_MESSAGES_MAXLINES  1000
53    
# Line 44  Line 58 
58    
59    
60  //-------------------------------------------------------------------------  //-------------------------------------------------------------------------
61  // qsamplerMessages - Messages log dockable window.  // QSampler::Messages - Messages log dockable window.
62  //  //
63    
64  // Constructor.  // Constructor.
65  qsamplerMessages::qsamplerMessages ( QWidget *pParent, const char *pszName )  Messages::Messages ( QWidget *pParent )
66      : QDockWindow(pParent, pszName)          : QDockWidget(pParent)
67  {  {
68      // Intialize stdout capture stuff.          // Surely a name is crucial (e.g.for storing geometry settings)
69      m_pStdoutNotifier = NULL;          QDockWidget::setObjectName("qsamplerMessages");
     m_fdStdout[QSAMPLER_MESSAGES_FDREAD]  = QSAMPLER_MESSAGES_FDNIL;  
     m_fdStdout[QSAMPLER_MESSAGES_FDWRITE] = QSAMPLER_MESSAGES_FDNIL;  
   
     // Surely a name is crucial (e.g.for storing geometry settings)  
     if (pszName == 0)  
         QDockWindow::setName("qsamplerMessages");  
   
     // Create local text view widget.  
     m_pTextView = new QTextEdit(this);  
 //  QFont font(m_pTextView->font());  
 //  font.setFamily("Fixed");  
 //  m_pTextView->setFont(font);  
     m_pTextView->setWordWrap(QTextEdit::NoWrap);  
     m_pTextView->setReadOnly(true);  
     m_pTextView->setUndoRedoEnabled(false);  
 #if QT_VERSION >= 0x030200  
     m_pTextView->setTextFormat(Qt::LogText);  
 #endif  
     // Initialize default message limit.  
     setMessagesLimit(QSAMPLER_MESSAGES_MAXLINES);  
70    
71      // Prepare the dockable window stuff.          // Intialize stdout capture stuff.
72      QDockWindow::setWidget(m_pTextView);          m_pStdoutNotifier = nullptr;
73      QDockWindow::setOrientation(Qt::Horizontal);          m_fdStdout[QSAMPLER_MESSAGES_FDREAD]  = QSAMPLER_MESSAGES_FDNIL;
74      QDockWindow::setCloseMode(QDockWindow::Always);          m_fdStdout[QSAMPLER_MESSAGES_FDWRITE] = QSAMPLER_MESSAGES_FDNIL;
75      QDockWindow::setResizeEnabled(true);  
76            // Create local text view widget.
77            m_pMessagesTextView = new QTextEdit(this);
78    //  QFont font(m_pMessagesTextView->font());
79    //  font.setFamily("Fixed");
80    //  m_pMessagesTextView->setFont(font);
81            m_pMessagesTextView->setLineWrapMode(QTextEdit::NoWrap);
82            m_pMessagesTextView->setReadOnly(true);
83            m_pMessagesTextView->setUndoRedoEnabled(false);
84    //      m_pMessagesTextView->setTextFormat(Qt::LogText);
85    
86            // Initialize default message limit.
87            m_iMessagesLines = 0;
88            setMessagesLimit(QSAMPLER_MESSAGES_MAXLINES);
89    
90            m_pMessagesLog = nullptr;
91    
92            // Prepare the dockable window stuff.
93            QDockWidget::setWidget(m_pMessagesTextView);
94            QDockWidget::setFeatures(QDockWidget::AllDockWidgetFeatures);
95            QDockWidget::setAllowedAreas(
96                    Qt::TopDockWidgetArea | Qt::BottomDockWidgetArea);
97          // Some specialties to this kind of dock window...          // Some specialties to this kind of dock window...
98          QDockWindow::setFixedExtentHeight(120);          QDockWidget::setMinimumHeight(120);
99    
100      // Finally set the default caption and tooltip.          // Finally set the default caption and tooltip.
101      QString sCaption = tr("Messages");          const QString& sCaption = tr("Messages");
102      QToolTip::add(this, sCaption);          QDockWidget::setWindowTitle(sCaption);
103      QDockWindow::setCaption(sCaption);  //      QDockWidget::setWindowIcon(QIcon(":/icons/qsamplerMessages.png"));
104            QDockWidget::setToolTip(sCaption);
105  }  }
106    
107    
108  // Destructor.  // Destructor.
109  qsamplerMessages::~qsamplerMessages (void)  Messages::~Messages (void)
110  {  {
111      // No more notifications.          // Turn off and close logging.
112      if (m_pStdoutNotifier)          setLogging(false);
         delete m_pStdoutNotifier;  
113    
114      // No need to delete child widgets, Qt does it all for us.          // No more notifications.
115            if (m_pStdoutNotifier)
116                    delete m_pStdoutNotifier;
117    
118            // No need to delete child widgets, Qt does it all for us.
119    }
120    
121    
122    // Set stdout/stderr blocking mode.
123    bool Messages::stdoutBlock ( int fd, bool bBlock ) const
124    {
125    #if !defined(__WIN32__) && !defined(_WIN32) && !defined(WIN32)
126            const int iFlags = ::fcntl(fd, F_GETFL, 0);
127            const bool bNonBlock = bool(iFlags & O_NONBLOCK);
128            if (bBlock && bNonBlock)
129                    bBlock = (::fcntl(fd, F_SETFL, iFlags & ~O_NONBLOCK) == 0);
130            else
131            if (!bBlock && !bNonBlock)
132                    bBlock = (::fcntl(fd, F_SETFL, iFlags |  O_NONBLOCK) != 0);
133    #endif
134            return bBlock;
135  }  }
136    
137    
138  // Own stdout/stderr socket notifier slot.  // Own stdout/stderr socket notifier slot.
139  void qsamplerMessages::stdoutNotify ( int fd )  void Messages::stdoutNotify ( int fd )
140  {  {
141  #if !defined(WIN32)  #if !defined(__WIN32__) && !defined(_WIN32) && !defined(WIN32)
142      char achBuffer[1024];          // Set non-blocking reads, if not already...
143      int  cchBuffer = ::read(fd, achBuffer, sizeof(achBuffer) - 1);          const bool bBlock = stdoutBlock(fd, false);
144      if (cchBuffer > 0) {          // Read as much as is available...
145          achBuffer[cchBuffer] = (char) 0;          QString sTemp;
146          appendStdoutBuffer(achBuffer);          char achBuffer[1024];
147      }          const int cchBuffer = sizeof(achBuffer) - 1;
148            int cchRead = ::read(fd, achBuffer, cchBuffer);
149            while (cchRead > 0) {
150                    achBuffer[cchRead] = (char) 0;
151                    sTemp.append(achBuffer);
152                    cchRead = (bBlock ? 0 : ::read(fd, achBuffer, cchBuffer));
153            }
154            // Needs to be non-empty...
155            if (!sTemp.isEmpty())
156                    appendStdoutBuffer(sTemp);
157  #endif  #endif
158  }  }
159    
160    
161  // Stdout buffer handler -- now splitted by complete new-lines...  // Stdout buffer handler -- now splitted by complete new-lines...
162  void qsamplerMessages::appendStdoutBuffer ( const QString& s )  void Messages::appendStdoutBuffer ( const QString& s )
163  {  {
164      m_sStdoutBuffer.append(s);          m_sStdoutBuffer.append(s);
165    
166      int iLength = m_sStdoutBuffer.findRev('\n') + 1;          const int iLength = m_sStdoutBuffer.lastIndexOf('\n');
167      if (iLength > 0) {          if (iLength > 0) {
168          QString sTemp = m_sStdoutBuffer.left(iLength);                  const QString& sTemp = m_sStdoutBuffer.left(iLength);
169          m_sStdoutBuffer.remove(0, iLength);                  m_sStdoutBuffer.remove(0, iLength + 1);
170          QStringList list = QStringList::split('\n', sTemp, true);                  QStringList list = sTemp.split('\n');
171          for (QStringList::Iterator iter = list.begin(); iter != list.end(); iter++)                  QStringListIterator iter(list);
172              appendMessagesText(*iter);                  while (iter.hasNext())
173      }                          appendMessagesText(iter.next());
174            }
175  }  }
176    
177    
178  // Stdout flusher -- show up any unfinished line...  // Stdout flusher -- show up any unfinished line...
179  void qsamplerMessages::flushStdoutBuffer (void)  void Messages::flushStdoutBuffer (void)
180  {  {
181      if (!m_sStdoutBuffer.isEmpty()) {          if (!m_sStdoutBuffer.isEmpty()) {
182          appendMessagesText(m_sStdoutBuffer);                  appendMessagesText(m_sStdoutBuffer);
183          m_sStdoutBuffer.truncate(0);                  m_sStdoutBuffer.clear();
184      }          }
185  }  }
186    
187    
188  // Stdout capture accessors.  // Stdout capture accessors.
189  bool qsamplerMessages::isCaptureEnabled (void)  bool Messages::isCaptureEnabled (void)
190  {  {
191      return (bool) (m_pStdoutNotifier != NULL);          return (m_pStdoutNotifier != nullptr);
192  }  }
193    
194  void qsamplerMessages::setCaptureEnabled ( bool bCapture )  void Messages::setCaptureEnabled ( bool bCapture )
195  {  {
196      // Flush current buffer.          // Flush current buffer.
197      flushStdoutBuffer();          flushStdoutBuffer();
198    
199  #if !defined(WIN32)  #if !defined(__WIN32__) && !defined(_WIN32) && !defined(WIN32)
200      // Destroy if already enabled.          // Destroy if already enabled.
201      if (!bCapture && m_pStdoutNotifier) {          if (!bCapture && m_pStdoutNotifier) {
202          delete m_pStdoutNotifier;                  delete m_pStdoutNotifier;
203          m_pStdoutNotifier = NULL;                  m_pStdoutNotifier = nullptr;
204          // Close the notification pipes.                  // Close the notification pipes.
205          if (m_fdStdout[QSAMPLER_MESSAGES_FDREAD] != QSAMPLER_MESSAGES_FDNIL) {                  if (m_fdStdout[QSAMPLER_MESSAGES_FDREAD] != QSAMPLER_MESSAGES_FDNIL) {
206              ::close(m_fdStdout[QSAMPLER_MESSAGES_FDREAD]);                          ::close(m_fdStdout[QSAMPLER_MESSAGES_FDREAD]);
207              m_fdStdout[QSAMPLER_MESSAGES_FDREAD]  = QSAMPLER_MESSAGES_FDNIL;                          m_fdStdout[QSAMPLER_MESSAGES_FDREAD]  = QSAMPLER_MESSAGES_FDNIL;
208          }                  }
209          if (m_fdStdout[QSAMPLER_MESSAGES_FDREAD] != QSAMPLER_MESSAGES_FDNIL) {          }
210              ::close(m_fdStdout[QSAMPLER_MESSAGES_FDREAD]);          // Are we going to make up the capture?
211              m_fdStdout[QSAMPLER_MESSAGES_FDREAD]  = QSAMPLER_MESSAGES_FDNIL;          if (bCapture && m_pStdoutNotifier == nullptr && ::pipe(m_fdStdout) == 0) {
212          }                  ::dup2(m_fdStdout[QSAMPLER_MESSAGES_FDWRITE], STDOUT_FILENO);
213      }                  ::dup2(m_fdStdout[QSAMPLER_MESSAGES_FDWRITE], STDERR_FILENO);
214      // Are we going to make up the capture?                  m_pStdoutNotifier = new QSocketNotifier(
215      if (bCapture && m_pStdoutNotifier == NULL && ::pipe(m_fdStdout) == 0) {                          m_fdStdout[QSAMPLER_MESSAGES_FDREAD], QSocketNotifier::Read, this);
216          ::dup2(m_fdStdout[QSAMPLER_MESSAGES_FDWRITE], STDOUT_FILENO);                  QObject::connect(m_pStdoutNotifier,
217          ::dup2(m_fdStdout[QSAMPLER_MESSAGES_FDWRITE], STDERR_FILENO);                          SIGNAL(activated(int)),
218          m_pStdoutNotifier = new QSocketNotifier(m_fdStdout[QSAMPLER_MESSAGES_FDREAD], QSocketNotifier::Read, this);                          SLOT(stdoutNotify(int)));
219          QObject::connect(m_pStdoutNotifier, SIGNAL(activated(int)), this, SLOT(stdoutNotify(int)));          }
     }  
220  #endif  #endif
221  }  }
222    
223    
224  // Message font accessors.  // Message font accessors.
225  QFont qsamplerMessages::messagesFont (void)  QFont Messages::messagesFont (void)
226  {  {
227      return m_pTextView->font();          return m_pMessagesTextView->font();
228  }  }
229    
230  void qsamplerMessages::setMessagesFont( const QFont& font )  void Messages::setMessagesFont ( const QFont& font )
231  {  {
232      m_pTextView->setFont(font);          m_pMessagesTextView->setFont(font);
233  }  }
234    
235    
236  // Maximum number of message lines accessors.  // Maximum number of message lines accessors.
237  int qsamplerMessages::messagesLimit (void)  int Messages::messagesLimit (void)
238  {  {
239      return m_iMessagesLimit;          return m_iMessagesLimit;
240  }  }
241    
242  void qsamplerMessages::setMessagesLimit ( int iMessagesLimit )  void Messages::setMessagesLimit ( int iMessagesLimit )
243  {  {
244      m_iMessagesLimit = iMessagesLimit;          m_iMessagesLimit = iMessagesLimit;
245      m_iMessagesHigh  = iMessagesLimit + (iMessagesLimit / 3);          m_iMessagesHigh  = iMessagesLimit + (iMessagesLimit / 3);
246  #if QT_VERSION >= 0x030200  }
247          m_pTextView->setMaxLogLines(iMessagesLimit);  
248  #endif  // Messages logging stuff.
249    bool Messages::isLogging (void) const
250    {
251            return (m_pMessagesLog != nullptr);
252    }
253    
254    void Messages::setLogging ( bool bEnabled, const QString& sFilename )
255    {
256            if (m_pMessagesLog) {
257                    appendMessages(tr("Logging stopped --- %1 ---")
258                            .arg(QDateTime::currentDateTime().toString()));
259                    m_pMessagesLog->close();
260                    delete m_pMessagesLog;
261                    m_pMessagesLog = nullptr;
262            }
263    
264            if (bEnabled) {
265                    m_pMessagesLog = new QFile(sFilename);
266                    if (m_pMessagesLog->open(QIODevice::Text | QIODevice::Append)) {
267                            appendMessages(tr("Logging started --- %1 ---")
268                                    .arg(QDateTime::currentDateTime().toString()));
269                    } else {
270                            delete m_pMessagesLog;
271                            m_pMessagesLog = nullptr;
272                    }
273            }
274    }
275    
276    
277    // Messages log output method.
278    void Messages::appendMessagesLog ( const QString& s )
279    {
280            if (m_pMessagesLog) {
281                    QTextStream(m_pMessagesLog) << s << endl;
282                    m_pMessagesLog->flush();
283            }
284    }
285    
286    // Messages widget output method.
287    void Messages::appendMessagesLine ( const QString& s )
288    {
289            // Check for message line limit...
290            if (m_iMessagesLines > m_iMessagesHigh) {
291                    m_pMessagesTextView->setUpdatesEnabled(false);
292                    QTextCursor textCursor(m_pMessagesTextView->document()->begin());
293                    while (m_iMessagesLines > m_iMessagesLimit) {
294                            // Move cursor extending selection
295                            // from start to next line-block...
296                            textCursor.movePosition(
297                                    QTextCursor::NextBlock, QTextCursor::KeepAnchor);
298                            m_iMessagesLines--;
299                    }
300                    // Remove the excessive line-blocks...
301                    textCursor.removeSelectedText();
302                    m_pMessagesTextView->setUpdatesEnabled(true);
303            }
304    
305            m_pMessagesTextView->append(s);
306            m_iMessagesLines++;
307  }  }
308    
309    
310  // The main utility methods.  // The main utility methods.
311  void qsamplerMessages::appendMessages ( const QString& s )  void Messages::appendMessages ( const QString& s )
312  {  {
313      appendMessagesColor(s, "#999999");          appendMessagesColor(s, "#999999");
314  }  }
315    
316  void qsamplerMessages::appendMessagesColor ( const QString& s, const QString &c )  void Messages::appendMessagesColor ( const QString& s, const QString &c )
317  {  {
318      appendMessagesText("<font color=\"" + c + "\">" + QTime::currentTime().toString("hh:mm:ss.zzz") + " " + s + "</font>");          const QString& sText
319                    = QTime::currentTime().toString("hh:mm:ss.zzz") + ' ' + s;
320            appendMessagesLine("<font color=\"" + c + "\">" + sText + "</font>");
321            appendMessagesLog(sText);
322  }  }
323    
324  void qsamplerMessages::appendMessagesText ( const QString& s )  void Messages::appendMessagesText ( const QString& s )
325  {  {
326  #if QT_VERSION < 0x030200          appendMessagesLine(s);
327      // Check for message line limit...          appendMessagesLog(s);
     if (m_iMessagesLimit > 0) {  
         int iParagraphs = m_pTextView->paragraphs();  
         if (iParagraphs > m_iMessagesHigh) {  
             m_pTextView->setUpdatesEnabled(false);  
             while (iParagraphs > m_iMessagesLimit) {  
                 m_pTextView->removeParagraph(0);  
                 iParagraphs--;  
             }  
             m_pTextView->scrollToBottom();  
             m_pTextView->setUpdatesEnabled(true);  
         }  
     }  
 #endif  
     m_pTextView->append(s);  
328  }  }
329    
330    
331  // One time scroll to the most recent message.  // History reset.
332  void qsamplerMessages::scrollToBottom (void)  void Messages::clear (void)
333  {  {
334      flushStdoutBuffer();          m_iMessagesLines = 0;
335      m_pTextView->scrollToBottom();          m_pMessagesTextView->clear();
336  }  }
337    
338    } // namespace QSampler
339    
340    
341  // end of qsamplerMessages.cpp  // end of qsamplerMessages.cpp
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