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qd_port.cpp

//C-  -*- C++ -*-
//C- -------------------------------------------------------------------
//C- DjVuLibre-3.5
//C- Copyright (c) 2002  Leon Bottou and Yann Le Cun.
//C- Copyright (c) 2001  AT&T
//C-
//C- This software is subject to, and may be distributed under, the
//C- GNU General Public License, either Version 2 of the license,
//C- or (at your option) any later version. The license should have
//C- accompanied the software or you may obtain a copy of the license
//C- from the Free Software Foundation at http://www.fsf.org .
//C-
//C- This program is distributed in the hope that it will be useful,
//C- but WITHOUT ANY WARRANTY; without even the implied warranty of
//C- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//C- GNU General Public License for more details.
//C- 
//C- DjVuLibre-3.5 is derived from the DjVu(r) Reference Library from
//C- Lizardtech Software.  Lizardtech Software has authorized us to
//C- replace the original DjVu(r) Reference Library notice by the following
//C- text (see doc/lizard2002.djvu and doc/lizardtech2007.djvu):
//C-
//C-  ------------------------------------------------------------------
//C- | DjVu (r) Reference Library (v. 3.5)
//C- | Copyright (c) 1999-2001 LizardTech, Inc. All Rights Reserved.
//C- | The DjVu Reference Library is protected by U.S. Pat. No.
//C- | 6,058,214 and patents pending.
//C- |
//C- | This software is subject to, and may be distributed under, the
//C- | GNU General Public License, either Version 2 of the license,
//C- | or (at your option) any later version. The license should have
//C- | accompanied the software or you may obtain a copy of the license
//C- | from the Free Software Foundation at http://www.fsf.org .
//C- |
//C- | The computer code originally released by LizardTech under this
//C- | license and unmodified by other parties is deemed "the LIZARDTECH
//C- | ORIGINAL CODE."  Subject to any third party intellectual property
//C- | claims, LizardTech grants recipient a worldwide, royalty-free, 
//C- | non-exclusive license to make, use, sell, or otherwise dispose of 
//C- | the LIZARDTECH ORIGINAL CODE or of programs derived from the 
//C- | LIZARDTECH ORIGINAL CODE in compliance with the terms of the GNU 
//C- | General Public License.   This grant only confers the right to 
//C- | infringe patent claims underlying the LIZARDTECH ORIGINAL CODE to 
//C- | the extent such infringement is reasonably necessary to enable 
//C- | recipient to make, have made, practice, sell, or otherwise dispose 
//C- | of the LIZARDTECH ORIGINAL CODE (or portions thereof) and not to 
//C- | any greater extent that may be necessary to utilize further 
//C- | modifications or combinations.
//C- |
//C- | The LIZARDTECH ORIGINAL CODE is provided "AS IS" WITHOUT WARRANTY
//C- | OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
//C- | TO ANY WARRANTY OF NON-INFRINGEMENT, OR ANY IMPLIED WARRANTY OF
//C- | MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
//C- +------------------------------------------------------------------
// 
// $Id: qd_port.cpp,v 1.11 2008/08/06 12:21:23 leonb Exp $
// $Name: release_3_5_22 $

#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#if NEED_GNUG_PRAGMAS
# pragma implementation
#endif

#include "qd_port.h"
#include "debug.h"

#include <ctype.h>



//****************************************************************************
//******************************* QDPort::Port *******************************
//****************************************************************************

bool
QDPort::Port::notify_error(const DjVuPort * source, const GUTF8String &msg)
{
   GMonitorLock lock(&disabled);
   return disabled ? false : port->notify_error(source, msg);
}

bool
QDPort::Port::notify_status(const DjVuPort * source, const GUTF8String &msg)
{
   GMonitorLock lock(&disabled);
   return disabled ? false : port->notify_status(source, msg);
}

void
QDPort::Port::notify_redisplay(const DjVuImage * source)
{
   GMonitorLock lock(&disabled);
   if (!disabled)
      port->notify_redisplay(source);
}

void
QDPort::Port::notify_relayout(const DjVuImage * source)
{
   GMonitorLock lock(&disabled);
   if (!disabled)
      port->notify_relayout(source);
}

void
QDPort::Port::notify_chunk_done(const DjVuPort * source, const GUTF8String &qname)
{
//   const char * const name=qname;
   GMonitorLock lock(&disabled);
   if (!disabled)
      port->notify_chunk_done(source, qname);
}

void
QDPort::Port::notify_file_flags_changed(const DjVuFile * source,
                              long set_mask, long clr_mask)
{
   GMonitorLock lock(&disabled);
   if (!disabled)
      port->notify_file_flags_changed(source, set_mask, clr_mask);
}

void
QDPort::Port::notify_doc_flags_changed(const DjVuDocument * source,
                               long set_mask, long clr_mask)
{
   GMonitorLock lock(&disabled);
   if (!disabled)
      port->notify_doc_flags_changed(source, set_mask, clr_mask);
}

void
QDPort::Port::notify_decode_progress(const DjVuPort * source, float done)
{
   GMonitorLock lock(&disabled);
   if (!disabled)
      port->notify_decode_progress(source, done);
}

//****************************************************************************
//********************************* QDPort ***********************************
//****************************************************************************

QDPort::~QDPort(void)
{
   port->disabled=1;
   port=0;
}

QDPort::QDPort(bool _watch_errors, bool _watch_status,
             QObject * parent, const char * name) :
      QObject(parent, name),
      watch_errors(_watch_errors), watch_status(_watch_status)
{
   sig_error_on=sig_status_on=sig_redisplay_on=
   sig_relayout_on=sig_chunk_done_on=
   sig_file_flags_changed_on=sig_doc_flags_changed_on=
   sig_decode_progress_on=0;

   port=new Port(this);
   messenger.setLookAhead(1);
   
   connect(&messenger, SIGNAL(sigGeneralMsg(const GUTF8String &)),
         this, SLOT(slotGeneralMsg(const GUTF8String &)));
}

void
QDPort::connectNotify(const char *s)
{
   const char * ptr=strchr(s, '(');
   int len=ptr-s;
   if (!strncmp(s, SIGNAL(sigNotifyError(const GP<DjVuPort> &, const GUTF8String &)), len))
      sig_error_on=1;
   if (!strncmp(s, SIGNAL(sigNotifyStatus(const GP<DjVuPort> &, const QString &)), len))
      sig_status_on=1;
   if (!strncmp(s, SIGNAL(sigNotifyRedisplay(const GP<DjVuImage> &)), len))
      sig_redisplay_on=1;
   if (!strncmp(s, SIGNAL(sigNotifyRelayout(const GP<DjVuImage> &)), len))
      sig_relayout_on=1;
   if (!strncmp(s, SIGNAL(sigNotifyChunkDone(const GP<DjVuPort> &, const GUTF8String &)), len))
      sig_chunk_done_on=1;
   if (!strncmp(s, SIGNAL(sigNotifyFileFlagsChanged(const GP<DjVuFile> &, long, long)), len))
      sig_file_flags_changed_on=1;
   if (!strncmp(s, SIGNAL(sigNotifyDocFlagsChanged(const GP<DjVuDocument> &, long, long)), len))
      sig_doc_flags_changed_on=1;
   if (!strncmp(s, SIGNAL(sigNotifyDecodeProgress(const GP<DjVuPort> &, float)), len))
      sig_decode_progress_on=1;
}

void
QDPort::disconnectNotify(const char *s)
{
   const char * ptr=strchr(s, '(');
   int len=ptr-s;
   if (!strncmp(s, SIGNAL(sigNotifyError(const GP<DjVuPort> &, const GUTF8String &)), len))
      sig_error_on=0;
   if (!strncmp(s, SIGNAL(sigNotifyStatus(const GP<DjVuPort> &, const QString &)), len))
      sig_status_on=0;
   if (!strncmp(s, SIGNAL(sigNotifyRedisplay(const GP<DjVuImage> &)), len))
      sig_redisplay_on=0;
   if (!strncmp(s, SIGNAL(sigNotifyRelayout(const GP<DjVuImage> &)), len))
      sig_relayout_on=0;
   if (!strncmp(s, SIGNAL(sigNotifyChunkDone(const GP<DjVuPort> &, const GUTF8String &)), len))
      sig_chunk_done_on=0;
   if (!strncmp(s, SIGNAL(sigNotifyFileFlagsChanged(const GP<DjVuFile> &, long, long)), len))
      sig_file_flags_changed_on=0;
   if (!strncmp(s, SIGNAL(sigNotifyDocFlagsChanged(const GP<DjVuDocument> &, long, long)), len))
      sig_doc_flags_changed_on=0;
   if (!strncmp(s, SIGNAL(sigNotifyDecodeProgress(const GP<DjVuPort> &, float)), len))
      sig_decode_progress_on=0;
}

void
QDPort::slotGeneralMsg(const GUTF8String &qmsg)
{
   DEBUG_MSG("QDPort::slotGeneralMsg()\n");
   DEBUG_MAKE_INDENT(3);
   
   const char * msg=qmsg;
   const char * ptr;
   for(ptr=msg;*ptr && !isspace(*ptr);ptr++);
   GUTF8String call_name=GUTF8String(msg, ptr-msg);

   DEBUG_MSG("QDPort::slotGeneralMsg(): call_name=" << call_name << "\n");
   
   while(*ptr && isspace(*ptr)) ptr++;
   msg=ptr;
   while(*ptr && !isspace(*ptr)) ptr++;
   DEBUG_MSG("QDPort::slotGeneralMsg(): source=" << atol(GUTF8String(msg, ptr-msg)) << "\n");
   DjVuPort * source=(DjVuPort *) atol(GUTF8String(msg, ptr-msg));
   GP<DjVuPort> src;
   {
      GCriticalSectionLock lock(&src_lock);
      for(GPosition pos=src_list;pos;++pos)
       if (src_list[pos]==source)
       {
          src=src_list[pos];
          src_list.del(pos);
          break;
       }
   }
   if (src)
   {
      if (call_name=="notify_error")
      {
       while(*ptr && isspace(*ptr)) ptr++;
       emit sigNotifyError(src, ptr);
      } else if (call_name=="notify_status")
      {
       while(*ptr && isspace(*ptr)) ptr++;
       emit sigNotifyStatus(src, ptr);
      } else if (call_name=="notify_redisplay")
      {
       emit sigNotifyRedisplay((DjVuImage *) source);
      } else if (call_name=="notify_relayout")
      {
       emit sigNotifyRelayout((DjVuImage *) source);
      } else if (call_name=="notify_chunk_done")
      {
       while(*ptr && isspace(*ptr)) ptr++;
       emit sigNotifyChunkDone(src, ptr);
      } else if (call_name=="notify_file_flags_changed")
      {
       while(*ptr && isspace(*ptr)) ptr++;
       long set_mask, clr_mask;
       sscanf(ptr, "%ld %ld", &set_mask, &clr_mask);
         GP<DjVuFile> fsrc = (DjVuFile*)(DjVuPort*)src;
       emit sigNotifyFileFlagsChanged(fsrc, set_mask, clr_mask);
      } else if (call_name=="notify_doc_flags_changed")
      {
       while(*ptr && isspace(*ptr)) ptr++;
       long set_mask, clr_mask;
       sscanf(ptr, "%ld %ld", &set_mask, &clr_mask);
       emit sigNotifyDocFlagsChanged((DjVuDocument *) source, set_mask, clr_mask);
      } else if (call_name=="notify_decode_progress")
      {
       while(*ptr && isspace(*ptr)) ptr++;
       emit sigNotifyDecodeProgress(src, atof(ptr));
      } else G_THROW("Internal error: Unknown call name read from the pipe.");
   };
}

bool
QDPort::notify_error(const DjVuPort * source, const GUTF8String &qmsg)
{
   if (sig_error_on && watch_errors)
   {
      {
       GCriticalSectionLock lock(&src_lock);
       src_list.append((DjVuPort *) source);
      }
      char src_str[128];
      sprintf(src_str, "%ld", (long) source);
      GUTF8String mesg=GUTF8String("notify_error ")+src_str+" "+qmsg;
      messenger.generalMsg(mesg);
      return true;
   }
   return false;
}

bool
QDPort::notify_status(const DjVuPort * source, const GUTF8String &msg)
{
   if (sig_status_on && watch_status)
   {
      {
       GCriticalSectionLock lock(&src_lock);
       src_list.append((DjVuPort *) source);
      }
      char src_str[128];
      sprintf(src_str, "%ld", (long) source);
      GUTF8String mesg=GUTF8String("notify_status ")+src_str+" "+msg;
      messenger.generalMsg(mesg);
      return true;
   }
   return false;
}

void
QDPort::notify_redisplay(const DjVuImage * source)
{
   if (sig_redisplay_on)
   {
      {
       GCriticalSectionLock lock(&src_lock);
       src_list.append((DjVuPort *) source);
      }
      GUTF8String src_str;
      src_str.format("notify_redisplay %ld",(long)source);
      messenger.generalMsg(src_str);
   }
}

void
QDPort::notify_relayout(const DjVuImage * source)
{
   if (sig_relayout_on)
   {
      {
       GCriticalSectionLock lock(&src_lock);
       src_list.append((DjVuPort *) source);
      }
      GUTF8String src_str;
      src_str.format("notify_relayout %ld",(long)source);
      messenger.generalMsg(src_str);
   }
}

void
QDPort::notify_chunk_done(const DjVuPort * source, const GUTF8String &name)
{
   if (sig_chunk_done_on)
   {
      {
       GCriticalSectionLock lock(&src_lock);
       src_list.append((DjVuPort *) source);
      }
      GUTF8String src_str;
      src_str.format("notify_chunk_done %ld %s",(long)source,(const char *)name);
      messenger.generalMsg(src_str);
   }
}

void
QDPort::notify_file_flags_changed(const DjVuFile * source,
                          long set_mask, long clr_mask)
{
   if (sig_file_flags_changed_on)
   {
      {
       GCriticalSectionLock lock(&src_lock);
       src_list.append((DjVuPort *) source);
      }
      GUTF8String src_str;
      src_str.format("notify_file_flags_changed %ld %ld %ld", (long) source, set_mask, clr_mask);
      messenger.generalMsg(src_str);
   }
}

void
QDPort::notify_doc_flags_changed(const DjVuDocument * source,
                         long set_mask, long clr_mask)
{
   if (sig_doc_flags_changed_on)
   {
      {
       GCriticalSectionLock lock(&src_lock);
       src_list.append((DjVuPort *) source);
      }
      GUTF8String src_str;
      src_str.format("notify_doc_flags_changed %ld %ld %ld", (long) source, set_mask, clr_mask);
      messenger.generalMsg(src_str);
   }
}

void
QDPort::notify_decode_progress(const DjVuPort * source, float done)
{
   if (sig_decode_progress_on)
   {
      {
       GCriticalSectionLock lock(&src_lock);
       src_list.append((DjVuPort *) source);
      }
      GUTF8String src_str;
      src_str.format("notify_decode_progress %ld %g",(long)source,done);
      messenger.generalMsg(src_str);
   }
}


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