File indexing completed on 2024-05-19 15:27:52

 /*
     This file is part of KGraphViewer.
     Copyright (C) 2010  Gael de Chalendar <kleag@free.fr>
 
     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, see <http://www.gnu.org/licenses/>.
 
 */
 
 #include "layoutagraphthread.h"
 #include "kgraphviewerlib_debug.h"
 
 #include <QMutex>
 
 #include <QDebug>
 
 static QMutex gv_mutex;
 
 // Not sure just wrapping these two is really enough, but it
 // fixed all crashes when loading many files at once for me.
 
 int threadsafe_wrap_gvLayout(GVC_t *gvc, graph_t *g, const char *engine)
 {
     QMutexLocker locker(&gv_mutex);
     return gvLayout(gvc, g, engine);
 }
 
 int threadsafe_wrap_gvRender(GVC_t *gvc, graph_t *g, const char *format, FILE *out)
 {
     QMutexLocker locker(&gv_mutex);
     return gvRender(gvc, g, format, out);
 }
 
 LayoutAGraphThread::LayoutAGraphThread()
     : sem(1)
 {
     m_gvc = gvContext();
 }
 
 LayoutAGraphThread::~LayoutAGraphThread()
 {
     gvFreeContext(m_gvc);
 }
 
 void LayoutAGraphThread::run()
 {
     if (!m_g) {
         qCWarning(KGRAPHVIEWERLIB_LOG) << "No graph loaded, skipping layout";
         return;
     }
     threadsafe_wrap_gvLayout(m_gvc, m_g, m_layoutCommand.toUtf8().data());
     threadsafe_wrap_gvRender(m_gvc, m_g, "xdot", nullptr);
 }
 
 void LayoutAGraphThread::layoutGraph(graph_t *graph, const QString &layoutCommand)
 {
     sem.acquire();
     m_g = graph;
     m_layoutCommand = layoutCommand;
     start();
 }
 
 #include "moc_layoutagraphthread.cpp"