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)
{
    // 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);
#if QT_VERSION >= 0x030200
    m_pTextView->setTextFormat(Qt::LogText);
#endif
    // Initialize default message limit.
    setMessagesLimit(QSAMPLER_MESSAGES_MAXLINES);

    // 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	capela	94	// qsamplerMessages.cpp
2			//
3			/****************************************************************************
4	capela	338	Copyright (C) 2003-2005, rncbc aka Rui Nuno Capela. All rights reserved.
5	capela	94
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	capela	115	#if !defined(WIN32)
34			#include <unistd.h>
35			#endif
36
37	capela	94	// 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			// Intialize stdout capture stuff.
55			m_pStdoutNotifier = NULL;
56			m_fdStdout[QSAMPLER_MESSAGES_FDREAD] = QSAMPLER_MESSAGES_FDNIL;
57			m_fdStdout[QSAMPLER_MESSAGES_FDWRITE] = QSAMPLER_MESSAGES_FDNIL;
58
59			// Surely a name is crucial (e.g.for storing geometry settings)
60			if (pszName == 0)
61			QDockWindow::setName("qsamplerMessages");
62
63			// Create local text view widget.
64			m_pTextView = new QTextEdit(this);
65			// QFont font(m_pTextView->font());
66			// font.setFamily("Fixed");
67			// m_pTextView->setFont(font);
68			m_pTextView->setWordWrap(QTextEdit::NoWrap);
69			m_pTextView->setReadOnly(true);
70			m_pTextView->setUndoRedoEnabled(false);
71	capela	339	#if QT_VERSION >= 0x030200
72			m_pTextView->setTextFormat(Qt::LogText);
73			#endif
74			// Initialize default message limit.
75			setMessagesLimit(QSAMPLER_MESSAGES_MAXLINES);
76	capela	94
77			// Prepare the dockable window stuff.
78			QDockWindow::setWidget(m_pTextView);
79			QDockWindow::setOrientation(Qt::Horizontal);
80			QDockWindow::setCloseMode(QDockWindow::Always);
81			QDockWindow::setResizeEnabled(true);
82
83			// Finally set the default caption and tooltip.
84			QString sCaption = tr("Messages");
85			QToolTip::add(this, sCaption);
86			QDockWindow::setCaption(sCaption);
87			}
88
89
90			// Destructor.
91			qsamplerMessages::~qsamplerMessages (void)
92			{
93			// No more notifications.
94			if (m_pStdoutNotifier)
95			delete m_pStdoutNotifier;
96
97			// No need to delete child widgets, Qt does it all for us.
98			}
99
100
101			// Own stdout/stderr socket notifier slot.
102			void qsamplerMessages::stdoutNotify ( int fd )
103			{
104			#if !defined(WIN32)
105			char achBuffer[1024];
106			int cchBuffer = ::read(fd, achBuffer, sizeof(achBuffer) - 1);
107			if (cchBuffer > 0) {
108			achBuffer[cchBuffer] = (char) 0;
109			appendStdoutBuffer(achBuffer);
110			}
111			#endif
112			}
113
114
115			// Stdout buffer handler -- now splitted by complete new-lines...
116			void qsamplerMessages::appendStdoutBuffer ( const QString& s )
117			{
118			m_sStdoutBuffer.append(s);
119
120			int iLength = m_sStdoutBuffer.findRev('\n') + 1;
121			if (iLength > 0) {
122			QString sTemp = m_sStdoutBuffer.left(iLength);
123			m_sStdoutBuffer.remove(0, iLength);
124			QStringList list = QStringList::split('\n', sTemp, true);
125			for (QStringList::Iterator iter = list.begin(); iter != list.end(); iter++)
126			appendMessagesText(*iter);
127			}
128			}
129
130
131			// Stdout flusher -- show up any unfinished line...
132			void qsamplerMessages::flushStdoutBuffer (void)
133			{
134			if (!m_sStdoutBuffer.isEmpty()) {
135			appendMessagesText(m_sStdoutBuffer);
136			m_sStdoutBuffer.truncate(0);
137			}
138			}
139
140
141			// Stdout capture accessors.
142			bool qsamplerMessages::isCaptureEnabled (void)
143			{
144			return (bool) (m_pStdoutNotifier != NULL);
145			}
146
147			void qsamplerMessages::setCaptureEnabled ( bool bCapture )
148			{
149			// Flush current buffer.
150			flushStdoutBuffer();
151
152			#if !defined(WIN32)
153			// Destroy if already enabled.
154			if (!bCapture && m_pStdoutNotifier) {
155			delete m_pStdoutNotifier;
156			m_pStdoutNotifier = NULL;
157			// Close the notification pipes.
158			if (m_fdStdout[QSAMPLER_MESSAGES_FDREAD] != QSAMPLER_MESSAGES_FDNIL) {
159			::close(m_fdStdout[QSAMPLER_MESSAGES_FDREAD]);
160			m_fdStdout[QSAMPLER_MESSAGES_FDREAD] = QSAMPLER_MESSAGES_FDNIL;
161			}
162			if (m_fdStdout[QSAMPLER_MESSAGES_FDREAD] != QSAMPLER_MESSAGES_FDNIL) {
163			::close(m_fdStdout[QSAMPLER_MESSAGES_FDREAD]);
164			m_fdStdout[QSAMPLER_MESSAGES_FDREAD] = QSAMPLER_MESSAGES_FDNIL;
165			}
166			}
167			// Are we going to make up the capture?
168			if (bCapture && m_pStdoutNotifier == NULL && ::pipe(m_fdStdout) == 0) {
169			::dup2(m_fdStdout[QSAMPLER_MESSAGES_FDWRITE], STDOUT_FILENO);
170			::dup2(m_fdStdout[QSAMPLER_MESSAGES_FDWRITE], STDERR_FILENO);
171			m_pStdoutNotifier = new QSocketNotifier(m_fdStdout[QSAMPLER_MESSAGES_FDREAD], QSocketNotifier::Read, this);
172			QObject::connect(m_pStdoutNotifier, SIGNAL(activated(int)), this, SLOT(stdoutNotify(int)));
173			}
174			#endif
175			}
176
177
178			// Message font accessors.
179			QFont qsamplerMessages::messagesFont (void)
180			{
181			return m_pTextView->font();
182			}
183
184			void qsamplerMessages::setMessagesFont( const QFont& font )
185			{
186			m_pTextView->setFont(font);
187			}
188
189
190			// Maximum number of message lines accessors.
191			int qsamplerMessages::messagesLimit (void)
192			{
193			return m_iMessagesLimit;
194			}
195
196			void qsamplerMessages::setMessagesLimit ( int iMessagesLimit )
197			{
198			m_iMessagesLimit = iMessagesLimit;
199	capela	327	m_iMessagesHigh = iMessagesLimit + (iMessagesLimit / 3);
200	capela	338	#if QT_VERSION >= 0x030200
201			m_pTextView->setMaxLogLines(iMessagesLimit);
202			#endif
203	capela	94	}
204
205
206			// The main utility methods.
207			void qsamplerMessages::appendMessages ( const QString& s )
208			{
209			appendMessagesColor(s, "#999999");
210			}
211
212			void qsamplerMessages::appendMessagesColor ( const QString& s, const QString &c )
213			{
214			appendMessagesText("<font color=\"" + c + "\">" + QTime::currentTime().toString("hh:mm:ss.zzz") + " " + s + "</font>");
215			}
216
217			void qsamplerMessages::appendMessagesText ( const QString& s )
218			{
219	capela	338	#if QT_VERSION < 0x030200
220	capela	94	// Check for message line limit...
221			if (m_iMessagesLimit > 0) {
222			int iParagraphs = m_pTextView->paragraphs();
223	capela	327	if (iParagraphs > m_iMessagesHigh) {
224	capela	94	m_pTextView->setUpdatesEnabled(false);
225			while (iParagraphs > m_iMessagesLimit) {
226			m_pTextView->removeParagraph(0);
227			iParagraphs--;
228			}
229			m_pTextView->scrollToBottom();
230			m_pTextView->setUpdatesEnabled(true);
231			}
232			}
233	capela	338	#endif
234	capela	94	m_pTextView->append(s);
235			}
236
237
238			// One time scroll to the most recent message.
239			void qsamplerMessages::scrollToBottom (void)
240			{
241			flushStdoutBuffer();
242			m_pTextView->scrollToBottom();
243			}
244
245
246			// end of qsamplerMessages.cpp