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

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Revision 115 - (show annotations) (download)
Mon Jun 7 21:41:43 2004 UTC (18 years, 1 month ago) by capela
File size: 7118 byte(s)
* Comment SET CHANNEL MIDI_INPUT_PORT command from
  saveSessionFile(), it has no effect.

* Insert a n #include <unistd.h> on qsamplerMessages.h, between

* An initial non zero value (0.8) should be set for the channel
  volume, while GET CHANNEL INFO command is pending implementation.

* The order to load/save and setup channel settings is now as
  suggested in the following lines:

    SET CHANNEL AUDIO_OUTPUT_TYPE ...
    SET CHANNEL MIDI_INPUT_TYPE ...
    SET CHANNEL MIDI_INPUT_CHANNEL ...
    LOAD ENGINE ...
    LOAD INSTRUMENT ...
    SET CHANNEL VOLUME ...

1 // qsamplerMessages.cpp
2 //
3 /****************************************************************************
4 Copyright (C) 2003-2004, 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 // Initialize default message limit.
55 m_iMessagesLimit = QSAMPLER_MESSAGES_MAXLINES;
56
57 // Intialize stdout capture stuff.
58 m_pStdoutNotifier = NULL;
59 m_fdStdout[QSAMPLER_MESSAGES_FDREAD] = QSAMPLER_MESSAGES_FDNIL;
60 m_fdStdout[QSAMPLER_MESSAGES_FDWRITE] = QSAMPLER_MESSAGES_FDNIL;
61
62 // Surely a name is crucial (e.g.for storing geometry settings)
63 if (pszName == 0)
64 QDockWindow::setName("qsamplerMessages");
65
66 // Create local text view widget.
67 m_pTextView = new QTextEdit(this);
68 // QFont font(m_pTextView->font());
69 // font.setFamily("Fixed");
70 // m_pTextView->setFont(font);
71 m_pTextView->setWordWrap(QTextEdit::NoWrap);
72 m_pTextView->setReadOnly(true);
73 m_pTextView->setUndoRedoEnabled(false);
74
75 // Prepare the dockable window stuff.
76 QDockWindow::setWidget(m_pTextView);
77 QDockWindow::setOrientation(Qt::Horizontal);
78 QDockWindow::setCloseMode(QDockWindow::Always);
79 QDockWindow::setResizeEnabled(true);
80
81 // Finally set the default caption and tooltip.
82 QString sCaption = tr("Messages");
83 QToolTip::add(this, sCaption);
84 QDockWindow::setCaption(sCaption);
85 }
86
87
88 // Destructor.
89 qsamplerMessages::~qsamplerMessages (void)
90 {
91 // No more notifications.
92 if (m_pStdoutNotifier)
93 delete m_pStdoutNotifier;
94
95 // No need to delete child widgets, Qt does it all for us.
96 }
97
98
99 // Own stdout/stderr socket notifier slot.
100 void qsamplerMessages::stdoutNotify ( int fd )
101 {
102 #if !defined(WIN32)
103 char achBuffer[1024];
104 int cchBuffer = ::read(fd, achBuffer, sizeof(achBuffer) - 1);
105 if (cchBuffer > 0) {
106 achBuffer[cchBuffer] = (char) 0;
107 appendStdoutBuffer(achBuffer);
108 }
109 #endif
110 }
111
112
113 // Stdout buffer handler -- now splitted by complete new-lines...
114 void qsamplerMessages::appendStdoutBuffer ( const QString& s )
115 {
116 m_sStdoutBuffer.append(s);
117
118 int iLength = m_sStdoutBuffer.findRev('\n') + 1;
119 if (iLength > 0) {
120 QString sTemp = m_sStdoutBuffer.left(iLength);
121 m_sStdoutBuffer.remove(0, iLength);
122 QStringList list = QStringList::split('\n', sTemp, true);
123 for (QStringList::Iterator iter = list.begin(); iter != list.end(); iter++)
124 appendMessagesText(*iter);
125 }
126 }
127
128
129 // Stdout flusher -- show up any unfinished line...
130 void qsamplerMessages::flushStdoutBuffer (void)
131 {
132 if (!m_sStdoutBuffer.isEmpty()) {
133 appendMessagesText(m_sStdoutBuffer);
134 m_sStdoutBuffer.truncate(0);
135 }
136 }
137
138
139 // Stdout capture accessors.
140 bool qsamplerMessages::isCaptureEnabled (void)
141 {
142 return (bool) (m_pStdoutNotifier != NULL);
143 }
144
145 void qsamplerMessages::setCaptureEnabled ( bool bCapture )
146 {
147 // Flush current buffer.
148 flushStdoutBuffer();
149
150 #if !defined(WIN32)
151 // Destroy if already enabled.
152 if (!bCapture && m_pStdoutNotifier) {
153 delete m_pStdoutNotifier;
154 m_pStdoutNotifier = NULL;
155 // Close the notification pipes.
156 if (m_fdStdout[QSAMPLER_MESSAGES_FDREAD] != QSAMPLER_MESSAGES_FDNIL) {
157 ::close(m_fdStdout[QSAMPLER_MESSAGES_FDREAD]);
158 m_fdStdout[QSAMPLER_MESSAGES_FDREAD] = QSAMPLER_MESSAGES_FDNIL;
159 }
160 if (m_fdStdout[QSAMPLER_MESSAGES_FDREAD] != QSAMPLER_MESSAGES_FDNIL) {
161 ::close(m_fdStdout[QSAMPLER_MESSAGES_FDREAD]);
162 m_fdStdout[QSAMPLER_MESSAGES_FDREAD] = QSAMPLER_MESSAGES_FDNIL;
163 }
164 }
165 // Are we going to make up the capture?
166 if (bCapture && m_pStdoutNotifier == NULL && ::pipe(m_fdStdout) == 0) {
167 ::dup2(m_fdStdout[QSAMPLER_MESSAGES_FDWRITE], STDOUT_FILENO);
168 ::dup2(m_fdStdout[QSAMPLER_MESSAGES_FDWRITE], STDERR_FILENO);
169 m_pStdoutNotifier = new QSocketNotifier(m_fdStdout[QSAMPLER_MESSAGES_FDREAD], QSocketNotifier::Read, this);
170 QObject::connect(m_pStdoutNotifier, SIGNAL(activated(int)), this, SLOT(stdoutNotify(int)));
171 }
172 #endif
173 }
174
175
176 // Message font accessors.
177 QFont qsamplerMessages::messagesFont (void)
178 {
179 return m_pTextView->font();
180 }
181
182 void qsamplerMessages::setMessagesFont( const QFont& font )
183 {
184 m_pTextView->setFont(font);
185 }
186
187
188 // Maximum number of message lines accessors.
189 int qsamplerMessages::messagesLimit (void)
190 {
191 return m_iMessagesLimit;
192 }
193
194 void qsamplerMessages::setMessagesLimit ( int iMessagesLimit )
195 {
196 m_iMessagesLimit = iMessagesLimit;
197 }
198
199
200 // The main utility methods.
201 void qsamplerMessages::appendMessages ( const QString& s )
202 {
203 appendMessagesColor(s, "#999999");
204 }
205
206 void qsamplerMessages::appendMessagesColor ( const QString& s, const QString &c )
207 {
208 appendMessagesText("<font color=\"" + c + "\">" + QTime::currentTime().toString("hh:mm:ss.zzz") + " " + s + "</font>");
209 }
210
211 void qsamplerMessages::appendMessagesText ( const QString& s )
212 {
213 // Check for message line limit...
214 if (m_iMessagesLimit > 0) {
215 int iParagraphs = m_pTextView->paragraphs();
216 if (iParagraphs > m_iMessagesLimit) {
217 m_pTextView->setUpdatesEnabled(false);
218 while (iParagraphs > m_iMessagesLimit) {
219 m_pTextView->removeParagraph(0);
220 iParagraphs--;
221 }
222 m_pTextView->scrollToBottom();
223 m_pTextView->setUpdatesEnabled(true);
224 }
225 }
226 m_pTextView->append(s);
227 }
228
229
230 // One time scroll to the most recent message.
231 void qsamplerMessages::scrollToBottom (void)
232 {
233 flushStdoutBuffer();
234 m_pTextView->scrollToBottom();
235 }
236
237
238 // end of qsamplerMessages.cpp

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