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	// qsamplerMessages.cpp
2	//
3	/****************************************************************************
4	Copyright (C) 2004-2008, 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
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	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
21	*****************************************************************************/
22
23	#include "qsamplerAbout.h"
24	#include "qsamplerMessages.h"
25
26	#include <QSocketNotifier>
27
28	#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)
38	#include <unistd.h>
39	#endif
40
41
42	namespace QSampler {
43
44	// 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	// QSampler::Messages - Messages log dockable window.
54	//
55
56	// Constructor.
57	Messages::Messages ( QWidget *pParent )
58	: QDockWidget(pParent)
59	{
60	// Surely a name is crucial (e.g.for storing geometry settings)
61	QDockWidget::setObjectName("qsamplerMessages");
62
63	// 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	// Create local text view widget.
69	m_pMessagesTextView = new QTextEdit(this);
70	// QFont font(m_pMessagesTextView->font());
71	// font.setFamily("Fixed");
72	// 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
78	// Initialize default message limit.
79	m_iMessagesLines = 0;
80	setMessagesLimit(QSAMPLER_MESSAGES_MAXLINES);
81
82	m_pMessagesLog = NULL;
83
84	// Prepare the dockable window stuff.
85	QDockWidget::setWidget(m_pMessagesTextView);
86	QDockWidget::setFeatures(QDockWidget::AllDockWidgetFeatures);
87	QDockWidget::setAllowedAreas(
88	Qt::TopDockWidgetArea \| Qt::BottomDockWidgetArea);
89	// Some specialties to this kind of dock window...
90	QDockWidget::setMinimumHeight(120);
91
92	// 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	}
98
99
100	// Destructor.
101	Messages::~Messages (void)
102	{
103	setLogging(false);
104
105	// 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	void Messages::showEvent ( QShowEvent *pEvent )
114	{
115	QDockWidget::showEvent(pEvent);
116	emit visibilityChanged(isVisible());
117	}
118
119
120	// Own stdout/stderr socket notifier slot.
121	void Messages::stdoutNotify ( int fd )
122	{
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	void Messages::appendStdoutBuffer ( const QString& s )
136	{
137	m_sStdoutBuffer.append(s);
138
139	int iLength = m_sStdoutBuffer.lastIndexOf('\n');
140	if (iLength > 0) {
141	QString sTemp = m_sStdoutBuffer.left(iLength);
142	m_sStdoutBuffer.remove(0, iLength + 1);
143	QStringList list = sTemp.split('\n');
144	QStringListIterator iter(list);
145	while (iter.hasNext())
146	appendMessagesText(iter.next());
147	}
148	}
149
150
151	// Stdout flusher -- show up any unfinished line...
152	void Messages::flushStdoutBuffer (void)
153	{
154	if (!m_sStdoutBuffer.isEmpty()) {
155	appendMessagesText(m_sStdoutBuffer);
156	m_sStdoutBuffer.truncate(0);
157	}
158	}
159
160
161	// Stdout capture accessors.
162	bool Messages::isCaptureEnabled (void)
163	{
164	return (bool) (m_pStdoutNotifier != NULL);
165	}
166
167	void Messages::setCaptureEnabled ( bool bCapture )
168	{
169	// Flush current buffer.
170	flushStdoutBuffer();
171
172	#if !defined(WIN32)
173	// 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	#endif
198	}
199
200
201	// Message font accessors.
202	QFont Messages::messagesFont (void)
203	{
204	return m_pMessagesTextView->font();
205	}
206
207	void Messages::setMessagesFont ( const QFont& font )
208	{
209	m_pMessagesTextView->setFont(font);
210	}
211
212
213	// Maximum number of message lines accessors.
214	int Messages::messagesLimit (void)
215	{
216	return m_iMessagesLimit;
217	}
218
219	void Messages::setMessagesLimit ( int iMessagesLimit )
220	{
221	m_iMessagesLimit = iMessagesLimit;
222	m_iMessagesHigh = iMessagesLimit + (iMessagesLimit / 3);
223	}
224
225	// Messages logging stuff.
226	bool Messages::isLogging (void) const
227	{
228	return (m_pMessagesLog != NULL);
229	}
230
231	void Messages::setLogging ( bool bEnabled, const QString& sFilename )
232	{
233	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	}
252
253
254	// Messages log output method.
255	void Messages::appendMessagesLog ( const QString& s )
256	{
257	if (m_pMessagesLog) {
258	QTextStream(m_pMessagesLog) << s << endl;
259	m_pMessagesLog->flush();
260	}
261	}
262
263	// Messages widget output method.
264	void Messages::appendMessagesLine ( const QString& s )
265	{
266	// Check for message line limit...
267	if (m_iMessagesLines > m_iMessagesHigh) {
268	m_pMessagesTextView->setUpdatesEnabled(false);
269	QTextCursor textCursor(m_pMessagesTextView->document()->begin());
270	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	m_pMessagesTextView->setUpdatesEnabled(true);
280	}
281
282	m_pMessagesTextView->append(s);
283	m_iMessagesLines++;
284	}
285
286
287	// 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	// History reset.
309	void Messages::clear (void)
310	{
311	m_iMessagesLines = 0;
312	m_pMessagesTextView->clear();
313	}
314
315	} // namespace QSampler
316
317
318	// end of qsamplerMessages.cpp