rbutil/rbutilqt/systrace.cpp

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  *
   9  *   Copyright (C) 2007 by Dominik Riebeling
  10  *
  11  * All files in this archive are subject to the GNU General Public License.
  12  * See the file COPYING in the source tree root for full license agreement.
  13  *
  14  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  15  * KIND, either express or implied.
  16  *
  17  ****************************************************************************/
  18
  19 #include <QtGui>
  20 #include "systrace.h"
  21 #include "ui_systracefrm.h"
  22
  23 #include "rbsettings.h"
  24
  25 QString SysTrace::debugbuffer;
  26 QString SysTrace::lastmessage;
  27 unsigned int SysTrace::repeat = 0;
  28
  29 SysTrace::SysTrace(QWidget *parent) : QDialog(parent)
  30 {
  31     ui.setupUi(this);
  32     ui.textTrace->setReadOnly(true);
  33     ui.textTrace->setLayoutDirection(Qt::LeftToRight);
  34     refresh();
  35
  36     connect(ui.buttonClose, SIGNAL(clicked()), this, SLOT(close()));
  37     connect(ui.buttonSave, SIGNAL(clicked()), this, SLOT(saveCurrentTrace()));
  38     connect(ui.buttonSavePrevious, SIGNAL(clicked()), this, SLOT(savePreviousTrace()));
  39     connect(ui.buttonRefresh, SIGNAL(clicked()), this, SLOT(refresh()));
  40 }
  41
  42 void SysTrace::refresh(void)
  43 {
  44     int pos = ui.textTrace->verticalScrollBar()->value();
  45     flush();
  46     ui.textTrace->setHtml("<pre>" + debugbuffer + "</pre>");
  47     ui.textTrace->verticalScrollBar()->setValue(pos);
  48     QString oldlog = RbSettings::value(RbSettings::CachePath).toString()
  49                      + "/rbutil-trace.log";
  50     ui.buttonSavePrevious->setEnabled(QFileInfo(oldlog).isFile());
  51 }
  52
  53
  54 void SysTrace::save(QString filename)
  55 {
  56     if(filename.isEmpty())
  57         filename = RbSettings::value(RbSettings::CachePath).toString()
  58                     + "/rbutil-trace.log";
  59     // make sure any repeat detection is flushed
  60     flush();
  61     // append save date to the trace. Append it directly instead of using
  62     // qDebug() as the handler might have been unregistered.
  63     debugbuffer.append("[SysTrace] saving trace at ");
  64     debugbuffer.append(QDateTime::currentDateTime().toString(Qt::ISODate));
  65     debugbuffer.append("\n");
  66     QFile fh(filename);
  67     if(!fh.open(QIODevice::WriteOnly))
  68         return;
  69     fh.write(debugbuffer.toUtf8(), debugbuffer.size());
  70     fh.close();
  71 }
  72
  73 void SysTrace::saveCurrentTrace(void)
  74 {
  75     QString fp = QFileDialog::getSaveFileName(this, tr("Save system trace log"),
  76                         QDir::homePath(), "*.log");
  77     if(!fp.isEmpty())
  78         save(fp);
  79 }
  80
  81
  82 void SysTrace::savePreviousTrace(void)
  83 {
  84     QString fp = QFileDialog::getSaveFileName(this, tr("Save system trace log"),
  85                           QDir::homePath(), "*.log");
  86     if(fp.isEmpty())
  87         return;
  88
  89     QString oldlog = RbSettings::value(RbSettings::CachePath).toString()
  90                      + "/rbutil-trace.log";
  91     QFile::copy(oldlog, fp);
  92     return;
  93 }
  94
  95 void SysTrace::debug(QtMsgType type, const char* msg)
  96 {
  97     (void)type;
  98     if(lastmessage != msg) {
  99         lastmessage = msg;
 100         flush();
 101         debugbuffer.append(QString::fromLocal8Bit(msg) + "\n");
 102 #if !defined(NODEBUG)
 103         fprintf(stderr, "%s\n", msg);
 104 #endif
 105         repeat = 1;
 106     }
 107     else {
 108         repeat++;
 109     }
 110 }
 111
 112 void SysTrace::flush(void)
 113 {
 114     if(repeat > 1) {
 115         debugbuffer.append(
 116                 QString("    (Last message repeated %1 times.)\n").arg(repeat));
 117 #if !defined(NODEBUG)
 118         fprintf(stderr, "    (Last message repeated %i times.)\n", repeat);
 119 #endif
 120     }
 121 }
 122
 123
 124 void SysTrace::changeEvent(QEvent *e)
 125 {
 126     if(e->type() == QEvent::LanguageChange) {
 127         ui.retranslateUi(this);
 128     } else {
 129         QWidget::changeEvent(e);
 130     }
 131 }
 132