/[svn]/qsampler/trunk/src/qsamplerMessages.cpp
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Annotation of /qsampler/trunk/src/qsamplerMessages.cpp

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Revision 1739 - (hide annotations) (download)
Wed May 14 17:37:45 2008 UTC (12 years, 2 months ago) by capela
File size: 8469 byte(s)
- Messages file logging makes its first long overdue appearance,
  with user configurable settings in View/Options.../Server/Logging.

1 capela 94 // qsamplerMessages.cpp
2     //
3     /****************************************************************************
4 capela 1738 Copyright (C) 2004-2008, rncbc aka Rui Nuno Capela. All rights reserved.
5 capela 1464 Copyright (C) 2007, Christian Schoenebeck
6 capela 94
7     This program is free software; you can redistribute it and/or
8     modify it under the terms of the GNU General Public License
9     as published by the Free Software Foundation; either version 2
10     of the License, or (at your option) any later version.
11    
12     This program is distributed in the hope that it will be useful,
13     but WITHOUT ANY WARRANTY; without even the implied warranty of
14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15     GNU General Public License for more details.
16    
17 capela 920 You should have received a copy of the GNU General Public License along
18     with this program; if not, write to the Free Software Foundation, Inc.,
19     51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20 capela 94
21     *****************************************************************************/
22    
23 capela 1465 #include "qsamplerAbout.h"
24 capela 94 #include "qsamplerMessages.h"
25    
26 capela 1465 #include <QSocketNotifier>
27 capela 1738
28     #include <QFile>
29 capela 1465 #include <QTextEdit>
30     #include <QTextCursor>
31 capela 1738 #include <QTextStream>
32 capela 1465 #include <QTextBlock>
33 schoenebeck 1461 #include <QScrollBar>
34 capela 1465 #include <QDateTime>
35     #include <QIcon>
36 schoenebeck 1461
37 capela 115 #if !defined(WIN32)
38     #include <unistd.h>
39     #endif
40    
41 capela 1558
42     namespace QSampler {
43    
44 capela 94 // The default maximum number of message lines.
45     #define QSAMPLER_MESSAGES_MAXLINES 1000
46    
47     // Notification pipe descriptors
48     #define QSAMPLER_MESSAGES_FDNIL -1
49     #define QSAMPLER_MESSAGES_FDREAD 0
50     #define QSAMPLER_MESSAGES_FDWRITE 1
51    
52     //-------------------------------------------------------------------------
53 capela 1558 // QSampler::Messages - Messages log dockable window.
54 capela 94 //
55    
56     // Constructor.
57 capela 1558 Messages::Messages ( QWidget *pParent )
58 capela 1739 : QDockWidget(pParent)
59 capela 94 {
60 capela 1465 // Surely a name is crucial (e.g.for storing geometry settings)
61     QDockWidget::setObjectName("qsamplerMessages");
62    
63 capela 1739 // Intialize stdout capture stuff.
64     m_pStdoutNotifier = NULL;
65     m_fdStdout[QSAMPLER_MESSAGES_FDREAD] = QSAMPLER_MESSAGES_FDNIL;
66     m_fdStdout[QSAMPLER_MESSAGES_FDWRITE] = QSAMPLER_MESSAGES_FDNIL;
67 capela 94
68 capela 1465 // Create local text view widget.
69 capela 1738 m_pMessagesTextView = new QTextEdit(this);
70     // QFont font(m_pMessagesTextView->font());
71 capela 94 // font.setFamily("Fixed");
72 capela 1738 // m_pMessagesTextView->setFont(font);
73     m_pMessagesTextView->setLineWrapMode(QTextEdit::NoWrap);
74     m_pMessagesTextView->setReadOnly(true);
75     m_pMessagesTextView->setUndoRedoEnabled(false);
76     // m_pMessagesTextView->setTextFormat(Qt::LogText);
77 capela 94
78 capela 1465 // Initialize default message limit.
79     m_iMessagesLines = 0;
80     setMessagesLimit(QSAMPLER_MESSAGES_MAXLINES);
81    
82 capela 1738 m_pMessagesLog = NULL;
83    
84 capela 1465 // Prepare the dockable window stuff.
85 capela 1738 QDockWidget::setWidget(m_pMessagesTextView);
86 capela 1465 QDockWidget::setFeatures(QDockWidget::AllDockWidgetFeatures);
87     QDockWidget::setAllowedAreas(
88     Qt::TopDockWidgetArea | Qt::BottomDockWidgetArea);
89 capela 772 // Some specialties to this kind of dock window...
90 capela 1465 QDockWidget::setMinimumHeight(120);
91 capela 94
92 capela 1465 // Finally set the default caption and tooltip.
93     const QString& sCaption = tr("Messages");
94     QDockWidget::setWindowTitle(sCaption);
95     // QDockWidget::setWindowIcon(QIcon(":/icons/qsamplerMessages.png"));
96     QDockWidget::setToolTip(sCaption);
97 capela 94 }
98    
99    
100     // Destructor.
101 capela 1558 Messages::~Messages (void)
102 capela 94 {
103 capela 1739 // Turn off and close logging.
104 capela 1738 setLogging(false);
105    
106 capela 1739 // No more notifications.
107     if (m_pStdoutNotifier)
108     delete m_pStdoutNotifier;
109 capela 94
110 capela 1739 // No need to delete child widgets, Qt does it all for us.
111 capela 94 }
112    
113    
114 capela 1738 void Messages::showEvent ( QShowEvent *pEvent )
115 schoenebeck 1470 {
116 capela 1739 QDockWidget::showEvent(pEvent);
117     emit visibilityChanged(isVisible());
118 schoenebeck 1470 }
119    
120    
121 capela 94 // Own stdout/stderr socket notifier slot.
122 capela 1558 void Messages::stdoutNotify ( int fd )
123 capela 94 {
124     #if !defined(WIN32)
125 capela 1739 char achBuffer[1024];
126     int cchBuffer = ::read(fd, achBuffer, sizeof(achBuffer) - 1);
127     if (cchBuffer > 0) {
128     achBuffer[cchBuffer] = (char) 0;
129     appendStdoutBuffer(achBuffer);
130     }
131 capela 94 #endif
132     }
133    
134    
135     // Stdout buffer handler -- now splitted by complete new-lines...
136 capela 1558 void Messages::appendStdoutBuffer ( const QString& s )
137 capela 94 {
138 capela 1465 m_sStdoutBuffer.append(s);
139 capela 94
140 schoenebeck 1474 int iLength = m_sStdoutBuffer.lastIndexOf('\n');
141 capela 1465 if (iLength > 0) {
142     QString sTemp = m_sStdoutBuffer.left(iLength);
143 schoenebeck 1474 m_sStdoutBuffer.remove(0, iLength + 1);
144 capela 1465 QStringList list = sTemp.split('\n');
145     QStringListIterator iter(list);
146     while (iter.hasNext())
147     appendMessagesText(iter.next());
148     }
149 capela 94 }
150    
151    
152     // Stdout flusher -- show up any unfinished line...
153 capela 1558 void Messages::flushStdoutBuffer (void)
154 capela 94 {
155 capela 1739 if (!m_sStdoutBuffer.isEmpty()) {
156     appendMessagesText(m_sStdoutBuffer);
157     m_sStdoutBuffer.truncate(0);
158     }
159 capela 94 }
160    
161    
162     // Stdout capture accessors.
163 capela 1558 bool Messages::isCaptureEnabled (void)
164 capela 94 {
165 capela 1739 return (bool) (m_pStdoutNotifier != NULL);
166 capela 94 }
167    
168 capela 1558 void Messages::setCaptureEnabled ( bool bCapture )
169 capela 94 {
170 capela 1739 // Flush current buffer.
171     flushStdoutBuffer();
172 capela 94
173     #if !defined(WIN32)
174 capela 1465 // Destroy if already enabled.
175     if (!bCapture && m_pStdoutNotifier) {
176     delete m_pStdoutNotifier;
177     m_pStdoutNotifier = NULL;
178     // Close the notification pipes.
179     if (m_fdStdout[QSAMPLER_MESSAGES_FDREAD] != QSAMPLER_MESSAGES_FDNIL) {
180     ::close(m_fdStdout[QSAMPLER_MESSAGES_FDREAD]);
181     m_fdStdout[QSAMPLER_MESSAGES_FDREAD] = QSAMPLER_MESSAGES_FDNIL;
182     }
183     if (m_fdStdout[QSAMPLER_MESSAGES_FDREAD] != QSAMPLER_MESSAGES_FDNIL) {
184     ::close(m_fdStdout[QSAMPLER_MESSAGES_FDREAD]);
185     m_fdStdout[QSAMPLER_MESSAGES_FDREAD] = QSAMPLER_MESSAGES_FDNIL;
186     }
187     }
188     // Are we going to make up the capture?
189     if (bCapture && m_pStdoutNotifier == NULL && ::pipe(m_fdStdout) == 0) {
190     ::dup2(m_fdStdout[QSAMPLER_MESSAGES_FDWRITE], STDOUT_FILENO);
191     ::dup2(m_fdStdout[QSAMPLER_MESSAGES_FDWRITE], STDERR_FILENO);
192     m_pStdoutNotifier = new QSocketNotifier(
193     m_fdStdout[QSAMPLER_MESSAGES_FDREAD], QSocketNotifier::Read, this);
194     QObject::connect(m_pStdoutNotifier,
195     SIGNAL(activated(int)),
196     SLOT(stdoutNotify(int)));
197     }
198 capela 94 #endif
199     }
200    
201    
202     // Message font accessors.
203 capela 1558 QFont Messages::messagesFont (void)
204 capela 94 {
205 capela 1739 return m_pMessagesTextView->font();
206 capela 94 }
207    
208 capela 1738 void Messages::setMessagesFont ( const QFont& font )
209 capela 94 {
210 capela 1739 m_pMessagesTextView->setFont(font);
211 capela 94 }
212    
213    
214     // Maximum number of message lines accessors.
215 capela 1558 int Messages::messagesLimit (void)
216 capela 94 {
217 capela 1739 return m_iMessagesLimit;
218 capela 94 }
219    
220 capela 1558 void Messages::setMessagesLimit ( int iMessagesLimit )
221 capela 94 {
222 capela 1739 m_iMessagesLimit = iMessagesLimit;
223     m_iMessagesHigh = iMessagesLimit + (iMessagesLimit / 3);
224 capela 94 }
225    
226 capela 1738 // Messages logging stuff.
227     bool Messages::isLogging (void) const
228     {
229     return (m_pMessagesLog != NULL);
230     }
231 capela 94
232 capela 1738 void Messages::setLogging ( bool bEnabled, const QString& sFilename )
233 capela 94 {
234 capela 1738 if (m_pMessagesLog) {
235     appendMessages(tr("Logging stopped --- %1 ---")
236     .arg(QDateTime::currentDateTime().toString()));
237     m_pMessagesLog->close();
238     delete m_pMessagesLog;
239     m_pMessagesLog = NULL;
240     }
241    
242     if (bEnabled) {
243     m_pMessagesLog = new QFile(sFilename);
244     if (m_pMessagesLog->open(QIODevice::Text | QIODevice::Append)) {
245     appendMessages(tr("Logging started --- %1 ---")
246     .arg(QDateTime::currentDateTime().toString()));
247     } else {
248     delete m_pMessagesLog;
249     m_pMessagesLog = NULL;
250     }
251     }
252 capela 94 }
253    
254 capela 1738
255     // Messages log output method.
256     void Messages::appendMessagesLog ( const QString& s )
257 capela 94 {
258 capela 1738 if (m_pMessagesLog) {
259     QTextStream(m_pMessagesLog) << s << endl;
260     m_pMessagesLog->flush();
261     }
262 capela 94 }
263    
264 capela 1738 // Messages widget output method.
265     void Messages::appendMessagesLine ( const QString& s )
266 capela 94 {
267 capela 1738 // Check for message line limit...
268     if (m_iMessagesLines > m_iMessagesHigh) {
269     m_pMessagesTextView->setUpdatesEnabled(false);
270     QTextCursor textCursor(m_pMessagesTextView->document()->begin());
271 capela 1465 while (m_iMessagesLines > m_iMessagesLimit) {
272     // Move cursor extending selection
273     // from start to next line-block...
274     textCursor.movePosition(
275     QTextCursor::NextBlock, QTextCursor::KeepAnchor);
276     m_iMessagesLines--;
277     }
278     // Remove the excessive line-blocks...
279     textCursor.removeSelectedText();
280 capela 1738 m_pMessagesTextView->setUpdatesEnabled(true);
281     }
282 capela 1465
283 capela 1738 m_pMessagesTextView->append(s);
284 capela 1465 m_iMessagesLines++;
285 capela 94 }
286    
287    
288 capela 1738 // The main utility methods.
289     void Messages::appendMessages ( const QString& s )
290     {
291 capela 1739 appendMessagesColor(s, "#999999");
292 capela 1738 }
293    
294     void Messages::appendMessagesColor ( const QString& s, const QString &c )
295     {
296     QString sText = QTime::currentTime().toString("hh:mm:ss.zzz") + ' ' + s;
297     appendMessagesLine("<font color=\"" + c + "\">" + sText + "</font>");
298     appendMessagesLog(sText);
299     }
300    
301     void Messages::appendMessagesText ( const QString& s )
302     {
303     appendMessagesLine(s);
304     appendMessagesLog(s);
305     }
306    
307    
308 capela 1465 // History reset.
309 capela 1558 void Messages::clear (void)
310 capela 94 {
311 capela 1465 m_iMessagesLines = 0;
312 capela 1738 m_pMessagesTextView->clear();
313 capela 94 }
314    
315 capela 1558 } // namespace QSampler
316 capela 94
317 capela 1558
318 capela 94 // end of qsamplerMessages.cpp

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