trunk/src/qsamplerMessages.cpp

// qsamplerMessages.cpp
//
/****************************************************************************
   Copyright (C) 2004-2008, 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 <QSocketNotifier>

#include <QFile>
#include <QTextEdit>
#include <QTextCursor>
#include <QTextStream>
#include <QTextBlock>
#include <QScrollBar>
#include <QDateTime>
#include <QIcon>

#if !defined(WIN32)
#include <unistd.h>
#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)
{
        setLogging(false);

    // No more notifications.
    if (m_pStdoutNotifier)
        delete m_pStdoutNotifier;

    // No need to delete child widgets, Qt does it all for us.
}


void Messages::showEvent ( QShowEvent *pEvent )
{
    QDockWidget::showEvent(pEvent);
    emit visibilityChanged(isVisible());
}


// 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("<font color=\"" + c + "\">" + sText + "</font>");
        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
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	1465	: 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	94	// 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
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	1738	setLogging(false);
104
105	capela	94	// No more notifications.
106			if (m_pStdoutNotifier)
107			delete m_pStdoutNotifier;
108
109			// No need to delete child widgets, Qt does it all for us.
110			}
111
112
113	capela	1738	void Messages::showEvent ( QShowEvent *pEvent )
114	schoenebeck	1470	{
115	capela	1738	QDockWidget::showEvent(pEvent);
116	schoenebeck	1470	emit visibilityChanged(isVisible());
117			}
118
119
120	capela	94	// Own stdout/stderr socket notifier slot.
121	capela	1558	void Messages::stdoutNotify ( int fd )
122	capela	94	{
123			#if !defined(WIN32)
124			char achBuffer[1024];
125			int cchBuffer = ::read(fd, achBuffer, sizeof(achBuffer) - 1);
126			if (cchBuffer > 0) {
127			achBuffer[cchBuffer] = (char) 0;
128			appendStdoutBuffer(achBuffer);
129			}
130			#endif
131			}
132
133
134			// Stdout buffer handler -- now splitted by complete new-lines...
135	capela	1558	void Messages::appendStdoutBuffer ( const QString& s )
136	capela	94	{
137	capela	1465	m_sStdoutBuffer.append(s);
138	capela	94
139	schoenebeck	1474	int iLength = m_sStdoutBuffer.lastIndexOf('\n');
140	capela	1465	if (iLength > 0) {
141			QString sTemp = m_sStdoutBuffer.left(iLength);
142	schoenebeck	1474	m_sStdoutBuffer.remove(0, iLength + 1);
143	capela	1465	QStringList list = sTemp.split('\n');
144			QStringListIterator iter(list);
145			while (iter.hasNext())
146			appendMessagesText(iter.next());
147			}
148	capela	94	}
149
150
151			// Stdout flusher -- show up any unfinished line...
152	capela	1558	void Messages::flushStdoutBuffer (void)
153	capela	94	{
154			if (!m_sStdoutBuffer.isEmpty()) {
155			appendMessagesText(m_sStdoutBuffer);
156			m_sStdoutBuffer.truncate(0);
157			}
158			}
159
160
161			// Stdout capture accessors.
162	capela	1558	bool Messages::isCaptureEnabled (void)
163	capela	94	{
164			return (bool) (m_pStdoutNotifier != NULL);
165			}
166
167	capela	1558	void Messages::setCaptureEnabled ( bool bCapture )
168	capela	94	{
169			// Flush current buffer.
170			flushStdoutBuffer();
171
172			#if !defined(WIN32)
173	capela	1465	// Destroy if already enabled.
174			if (!bCapture && m_pStdoutNotifier) {
175			delete m_pStdoutNotifier;
176			m_pStdoutNotifier = NULL;
177			// Close the notification pipes.
178			if (m_fdStdout[QSAMPLER_MESSAGES_FDREAD] != QSAMPLER_MESSAGES_FDNIL) {
179			::close(m_fdStdout[QSAMPLER_MESSAGES_FDREAD]);
180			m_fdStdout[QSAMPLER_MESSAGES_FDREAD] = QSAMPLER_MESSAGES_FDNIL;
181			}
182			if (m_fdStdout[QSAMPLER_MESSAGES_FDREAD] != QSAMPLER_MESSAGES_FDNIL) {
183			::close(m_fdStdout[QSAMPLER_MESSAGES_FDREAD]);
184			m_fdStdout[QSAMPLER_MESSAGES_FDREAD] = QSAMPLER_MESSAGES_FDNIL;
185			}
186			}
187			// Are we going to make up the capture?
188			if (bCapture && m_pStdoutNotifier == NULL && ::pipe(m_fdStdout) == 0) {
189			::dup2(m_fdStdout[QSAMPLER_MESSAGES_FDWRITE], STDOUT_FILENO);
190			::dup2(m_fdStdout[QSAMPLER_MESSAGES_FDWRITE], STDERR_FILENO);
191			m_pStdoutNotifier = new QSocketNotifier(
192			m_fdStdout[QSAMPLER_MESSAGES_FDREAD], QSocketNotifier::Read, this);
193			QObject::connect(m_pStdoutNotifier,
194			SIGNAL(activated(int)),
195			SLOT(stdoutNotify(int)));
196			}
197	capela	94	#endif
198			}
199
200
201			// Message font accessors.
202	capela	1558	QFont Messages::messagesFont (void)
203	capela	94	{
204	capela	1738	return m_pMessagesTextView->font();
205	capela	94	}
206
207	capela	1738	void Messages::setMessagesFont ( const QFont& font )
208	capela	94	{
209	capela	1738	m_pMessagesTextView->setFont(font);
210	capela	94	}
211
212
213			// Maximum number of message lines accessors.
214	capela	1558	int Messages::messagesLimit (void)
215	capela	94	{
216			return m_iMessagesLimit;
217			}
218
219	capela	1558	void Messages::setMessagesLimit ( int iMessagesLimit )
220	capela	94	{
221			m_iMessagesLimit = iMessagesLimit;
222	capela	327	m_iMessagesHigh = iMessagesLimit + (iMessagesLimit / 3);
223	capela	94	}
224
225	capela	1738	// Messages logging stuff.
226			bool Messages::isLogging (void) const
227			{
228			return (m_pMessagesLog != NULL);
229			}
230	capela	94
231	capela	1738	void Messages::setLogging ( bool bEnabled, const QString& sFilename )
232	capela	94	{
233	capela	1738	if (m_pMessagesLog) {
234			appendMessages(tr("Logging stopped --- %1 ---")
235			.arg(QDateTime::currentDateTime().toString()));
236			m_pMessagesLog->close();
237			delete m_pMessagesLog;
238			m_pMessagesLog = NULL;
239			}
240
241			if (bEnabled) {
242			m_pMessagesLog = new QFile(sFilename);
243			if (m_pMessagesLog->open(QIODevice::Text \| QIODevice::Append)) {
244			appendMessages(tr("Logging started --- %1 ---")
245			.arg(QDateTime::currentDateTime().toString()));
246			} else {
247			delete m_pMessagesLog;
248			m_pMessagesLog = NULL;
249			}
250			}
251	capela	94	}
252
253	capela	1738
254			// Messages log output method.
255			void Messages::appendMessagesLog ( const QString& s )
256	capela	94	{
257	capela	1738	if (m_pMessagesLog) {
258			QTextStream(m_pMessagesLog) << s << endl;
259			m_pMessagesLog->flush();
260			}
261	capela	94	}
262
263	capela	1738	// Messages widget output method.
264			void Messages::appendMessagesLine ( const QString& s )
265	capela	94	{
266	capela	1738	// Check for message line limit...
267			if (m_iMessagesLines > m_iMessagesHigh) {
268			m_pMessagesTextView->setUpdatesEnabled(false);
269			QTextCursor textCursor(m_pMessagesTextView->document()->begin());
270	capela	1465	while (m_iMessagesLines > m_iMessagesLimit) {
271			// Move cursor extending selection
272			// from start to next line-block...
273			textCursor.movePosition(
274			QTextCursor::NextBlock, QTextCursor::KeepAnchor);
275			m_iMessagesLines--;
276			}
277			// Remove the excessive line-blocks...
278			textCursor.removeSelectedText();
279	capela	1738	m_pMessagesTextView->setUpdatesEnabled(true);
280			}
281	capela	1465
282	capela	1738	m_pMessagesTextView->append(s);
283	capela	1465	m_iMessagesLines++;
284	capela	94	}
285
286
287	capela	1738	// The main utility methods.
288			void Messages::appendMessages ( const QString& s )
289			{
290			appendMessagesColor(s, "#999999");
291			}
292
293			void Messages::appendMessagesColor ( const QString& s, const QString &c )
294			{
295			QString sText = QTime::currentTime().toString("hh:mm:ss.zzz") + ' ' + s;
296
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