trunk/src/qsamplerMessages.cpp

// qsamplerMessages.cpp
//
/****************************************************************************
   Copyright (C) 2003-2005, rncbc aka Rui Nuno Capela. All rights reserved.

   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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

*****************************************************************************/

#include "qsamplerMessages.h"

#include <qsocketnotifier.h>
#include <qstringlist.h>
#include <qtextedit.h>
#include <qdatetime.h>
#include <qtooltip.h>
#include <qpixmap.h>

#include "config.h"

#if !defined(WIN32)
#include <unistd.h>
#endif

// 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


//-------------------------------------------------------------------------
// qsamplerMessages - Messages log dockable window.
//

// Constructor.
qsamplerMessages::qsamplerMessages ( QWidget *pParent, const char *pszName )
    : QDockWindow(pParent, pszName)
{
#if QT_VERSION >= 0x030200
    m_pTextView->setTextFormat(Qt::LogText);
#endif
    // Initialize default message limit.
    setMessagesLimit(QSAMPLER_MESSAGES_MAXLINES);

    // Intialize stdout capture stuff.
    m_pStdoutNotifier = NULL;
    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);

    // Prepare the dockable window stuff.
    QDockWindow::setWidget(m_pTextView);
    QDockWindow::setOrientation(Qt::Horizontal);
    QDockWindow::setCloseMode(QDockWindow::Always);
    QDockWindow::setResizeEnabled(true);

    // Finally set the default caption and tooltip.
    QString sCaption = tr("Messages");
    QToolTip::add(this, sCaption);
    QDockWindow::setCaption(sCaption);
}


// Destructor.
qsamplerMessages::~qsamplerMessages (void)
{
    // No more notifications.
    if (m_pStdoutNotifier)
        delete m_pStdoutNotifier;

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


// Own stdout/stderr socket notifier slot.
void qsamplerMessages::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 qsamplerMessages::appendStdoutBuffer ( const QString& s )
{
    m_sStdoutBuffer.append(s);

    int iLength = m_sStdoutBuffer.findRev('\n') + 1;
    if (iLength > 0) {
        QString sTemp = m_sStdoutBuffer.left(iLength);
        m_sStdoutBuffer.remove(0, iLength);
        QStringList list = QStringList::split('\n', sTemp, true);
        for (QStringList::Iterator iter = list.begin(); iter != list.end(); iter++)
            appendMessagesText(*iter);
    }
}


// Stdout flusher -- show up any unfinished line...
void qsamplerMessages::flushStdoutBuffer (void)
{
    if (!m_sStdoutBuffer.isEmpty()) {
        appendMessagesText(m_sStdoutBuffer);
        m_sStdoutBuffer.truncate(0);
    }
}


// Stdout capture accessors.
bool qsamplerMessages::isCaptureEnabled (void)
{
    return (bool) (m_pStdoutNotifier != NULL);
}

void qsamplerMessages::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)), this, SLOT(stdoutNotify(int)));
    }
#endif
}


// Message font accessors.
QFont qsamplerMessages::messagesFont (void)
{
    return m_pTextView->font();
}

void qsamplerMessages::setMessagesFont( const QFont& font )
{
    m_pTextView->setFont(font);
}


// Maximum number of message lines accessors.
int qsamplerMessages::messagesLimit (void)
{
    return m_iMessagesLimit;
}

void qsamplerMessages::setMessagesLimit ( int iMessagesLimit )
{
    m_iMessagesLimit = iMessagesLimit;
    m_iMessagesHigh  = iMessagesLimit + (iMessagesLimit / 3);
#if QT_VERSION >= 0x030200
        m_pTextView->setMaxLogLines(iMessagesLimit);
#endif
}


// The main utility methods.
void qsamplerMessages::appendMessages ( const QString& s )
{
    appendMessagesColor(s, "#999999");
}

void qsamplerMessages::appendMessagesColor ( const QString& s, const QString &c )
{
    appendMessagesText("<font color=\"" + c + "\">" + QTime::currentTime().toString("hh:mm:ss.zzz") + " " + s + "</font>");
}

void qsamplerMessages::appendMessagesText ( const QString& s )
{
#if QT_VERSION < 0x030200
    // Check for message line limit...
    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);
}


// One time scroll to the most recent message.
void qsamplerMessages::scrollToBottom (void)
{
    flushStdoutBuffer();
    m_pTextView->scrollToBottom();
}


// end of qsamplerMessages.cpp
1	// qsamplerMessages.cpp
2	//
3	/****************************************************************************
4	Copyright (C) 2003-2005, rncbc aka Rui Nuno Capela. All rights reserved.
5
6	This program is free software; you can redistribute it and/or
7	modify it under the terms of the GNU General Public License
8	as published by the Free Software Foundation; either version 2
9	of the License, or (at your option) any later version.
10
11	This program is distributed in the hope that it will be useful,
12	but WITHOUT ANY WARRANTY; without even the implied warranty of
13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14	GNU General Public License for more details.
15
16	You should have received a copy of the GNU General Public License
17	along with this program; if not, write to the Free Software
18	Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19
20	*****************************************************************************/
21
22	#include "qsamplerMessages.h"
23
24	#include <qsocketnotifier.h>
25	#include <qstringlist.h>
26	#include <qtextedit.h>
27	#include <qdatetime.h>
28	#include <qtooltip.h>
29	#include <qpixmap.h>
30
31	#include "config.h"
32
33	#if !defined(WIN32)
34	#include <unistd.h>
35	#endif
36
37	// The default maximum number of message lines.
38	#define QSAMPLER_MESSAGES_MAXLINES 1000
39
40	// Notification pipe descriptors
41	#define QSAMPLER_MESSAGES_FDNIL -1
42	#define QSAMPLER_MESSAGES_FDREAD 0
43	#define QSAMPLER_MESSAGES_FDWRITE 1
44
45
46	//-------------------------------------------------------------------------
47	// qsamplerMessages - Messages log dockable window.
48	//
49
50	// Constructor.
51	qsamplerMessages::qsamplerMessages ( QWidget pParent, const char pszName )
52	: QDockWindow(pParent, pszName)
53	{
54	#if QT_VERSION >= 0x030200
55	m_pTextView->setTextFormat(Qt::LogText);
56	#endif
57	// Initialize default message limit.
58	setMessagesLimit(QSAMPLER_MESSAGES_MAXLINES);
59
60	// Intialize stdout capture stuff.
61	m_pStdoutNotifier = NULL;
62	m_fdStdout[QSAMPLER_MESSAGES_FDREAD] = QSAMPLER_MESSAGES_FDNIL;
63	m_fdStdout[QSAMPLER_MESSAGES_FDWRITE] = QSAMPLER_MESSAGES_FDNIL;
64
65	// Surely a name is crucial (e.g.for storing geometry settings)
66	if (pszName == 0)
67	QDockWindow::setName("qsamplerMessages");
68
69	// Create local text view widget.
70	m_pTextView = new QTextEdit(this);
71	// QFont font(m_pTextView->font());
72	// font.setFamily("Fixed");
73	// m_pTextView->setFont(font);
74	m_pTextView->setWordWrap(QTextEdit::NoWrap);
75	m_pTextView->setReadOnly(true);
76	m_pTextView->setUndoRedoEnabled(false);
77
78	// Prepare the dockable window stuff.
79	QDockWindow::setWidget(m_pTextView);
80	QDockWindow::setOrientation(Qt::Horizontal);
81	QDockWindow::setCloseMode(QDockWindow::Always);
82	QDockWindow::setResizeEnabled(true);
83
84	// Finally set the default caption and tooltip.
85	QString sCaption = tr("Messages");
86	QToolTip::add(this, sCaption);
87	QDockWindow::setCaption(sCaption);
88	}
89
90
91	// Destructor.
92	qsamplerMessages::~qsamplerMessages (void)
93	{
94	// No more notifications.
95	if (m_pStdoutNotifier)
96	delete m_pStdoutNotifier;
97
98	// No need to delete child widgets, Qt does it all for us.
99	}
100
101
102	// Own stdout/stderr socket notifier slot.
103	void qsamplerMessages::stdoutNotify ( int fd )
104	{
105	#if !defined(WIN32)
106	char achBuffer[1024];
107	int cchBuffer = ::read(fd, achBuffer, sizeof(achBuffer) - 1);
108	if (cchBuffer > 0) {
109	achBuffer[cchBuffer] = (char) 0;
110	appendStdoutBuffer(achBuffer);
111	}
112	#endif
113	}
114
115
116	// Stdout buffer handler -- now splitted by complete new-lines...
117	void qsamplerMessages::appendStdoutBuffer ( const QString& s )
118	{
119	m_sStdoutBuffer.append(s);
120
121	int iLength = m_sStdoutBuffer.findRev('\n') + 1;
122	if (iLength > 0) {
123	QString sTemp = m_sStdoutBuffer.left(iLength);
124	m_sStdoutBuffer.remove(0, iLength);
125	QStringList list = QStringList::split('\n', sTemp, true);
126	for (QStringList::Iterator iter = list.begin(); iter != list.end(); iter++)
127	appendMessagesText(*iter);
128	}
129	}
130
131
132	// Stdout flusher -- show up any unfinished line...
133	void qsamplerMessages::flushStdoutBuffer (void)
134	{
135	if (!m_sStdoutBuffer.isEmpty()) {
136	appendMessagesText(m_sStdoutBuffer);
137	m_sStdoutBuffer.truncate(0);
138	}
139	}
140
141
142	// Stdout capture accessors.
143	bool qsamplerMessages::isCaptureEnabled (void)
144	{
145	return (bool) (m_pStdoutNotifier != NULL);
146	}
147
148	void qsamplerMessages::setCaptureEnabled ( bool bCapture )
149	{
150	// Flush current buffer.
151	flushStdoutBuffer();
152
153	#if !defined(WIN32)
154	// Destroy if already enabled.
155	if (!bCapture && m_pStdoutNotifier) {
156	delete m_pStdoutNotifier;
157	m_pStdoutNotifier = NULL;
158	// Close the notification pipes.
159	if (m_fdStdout[QSAMPLER_MESSAGES_FDREAD] != QSAMPLER_MESSAGES_FDNIL) {
160	::close(m_fdStdout[QSAMPLER_MESSAGES_FDREAD]);
161	m_fdStdout[QSAMPLER_MESSAGES_FDREAD] = QSAMPLER_MESSAGES_FDNIL;
162	}
163	if (m_fdStdout[QSAMPLER_MESSAGES_FDREAD] != QSAMPLER_MESSAGES_FDNIL) {
164	::close(m_fdStdout[QSAMPLER_MESSAGES_FDREAD]);
165	m_fdStdout[QSAMPLER_MESSAGES_FDREAD] = QSAMPLER_MESSAGES_FDNIL;
166	}
167	}
168	// Are we going to make up the capture?
169	if (bCapture && m_pStdoutNotifier == NULL && ::pipe(m_fdStdout) == 0) {
170	::dup2(m_fdStdout[QSAMPLER_MESSAGES_FDWRITE], STDOUT_FILENO);
171	::dup2(m_fdStdout[QSAMPLER_MESSAGES_FDWRITE], STDERR_FILENO);
172	m_pStdoutNotifier = new QSocketNotifier(m_fdStdout[QSAMPLER_MESSAGES_FDREAD], QSocketNotifier::Read, this);
173	QObject::connect(m_pStdoutNotifier, SIGNAL(activated(int)), this, SLOT(stdoutNotify(int)));
174	}
175	#endif
176	}
177
178
179	// Message font accessors.
180	QFont qsamplerMessages::messagesFont (void)
181	{
182	return m_pTextView->font();
183	}
184
185	void qsamplerMessages::setMessagesFont( const QFont& font )
186	{
187	m_pTextView->setFont(font);
188	}
189
190
191	// Maximum number of message lines accessors.
192	int qsamplerMessages::messagesLimit (void)
193	{
194	return m_iMessagesLimit;
195	}
196
197	void qsamplerMessages::setMessagesLimit ( int iMessagesLimit )
198	{
199	m_iMessagesLimit = iMessagesLimit;
200	m_iMessagesHigh = iMessagesLimit + (iMessagesLimit / 3);
201	#if QT_VERSION >= 0x030200
202	m_pTextView->setMaxLogLines(iMessagesLimit);
203	#endif
204	}
205
206
207	// The main utility methods.
208	void qsamplerMessages::appendMessages ( const QString& s )
209	{
210	appendMessagesColor(s, "#999999");
211	}
212
213	void qsamplerMessages::appendMessagesColor ( const QString& s, const QString &c )
214	{
215	appendMessagesText("<font color=\"" + c + "\">" + QTime::currentTime().toString("hh:mm:ss.zzz") + " " + s + "</font>");
216	}
217
218	void qsamplerMessages::appendMessagesText ( const QString& s )
219	{
220	#if QT_VERSION < 0x030200
221	// Check for message line limit...
222	if (m_iMessagesLimit > 0) {
223	int iParagraphs = m_pTextView->paragraphs();
224	if (iParagraphs > m_iMessagesHigh) {
225	m_pTextView->setUpdatesEnabled(false);
226	while (iParagraphs > m_iMessagesLimit) {
227	m_pTextView->removeParagraph(0);
228	iParagraphs--;
229	}
230	m_pTextView->scrollToBottom();
231	m_pTextView->setUpdatesEnabled(true);
232	}
233	}
234	#endif
235	m_pTextView->append(s);
236	}
237
238
239	// One time scroll to the most recent message.
240	void qsamplerMessages::scrollToBottom (void)
241	{
242	flushStdoutBuffer();
243	m_pTextView->scrollToBottom();
244	}
245
246
247	// end of qsamplerMessages.cpp