Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdebase@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 139 insertions, 0 deletions

diff --git a/kioslave/thumbnail/djvucreator.cpp b/kioslave/thumbnail/djvucreator.cpp
new file mode 100644
index 000000000..653fc4163
--- /dev/null
+++ b/kioslave/thumbnail/djvucreator.cpp
@@ -0,0 +1,139 @@
+/*  This file is part of the KDE libraries
+    Copyright (C) 2001 Malte Starostik <malte@kde.org>
+    Copyright (C) 2001 Leon Bottou <leon@bottou.org>
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License as published by the Free Software Foundation; either
+    version 2 of the License, or (at your option) any later version.
+
+    This library 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
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public License
+    along with this library; see the file COPYING.LIB.  If not, write to
+    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+    Boston, MA 02110-1301, USA.
+*/
+
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+
+#include <assert.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <signal.h>
+#ifdef HAVE_SYS_SELECT_H
+#include <sys/select.h>
+#endif
+#include <sys/time.h>
+#include <sys/wait.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#include <qfile.h>
+#include <qimage.h>
+
+#include <kdemacros.h>
+
+#include "djvucreator.h"
+
+
+
+extern "C"
+{
+    KDE_EXPORT ThumbCreator *new_creator()
+    {
+        return new DjVuCreator;
+    }
+}
+
+bool DjVuCreator::create(const QString &path, int width, int height, QImage &img)
+{
+  int output[2];
+  QByteArray data(1024);
+  bool ok = false;
+
+  if (pipe(output) == -1)
+    return false;
+  
+  const char* argv[8];
+  QCString sizearg, fnamearg;
+  sizearg.sprintf("%dx%d", width, height);
+  fnamearg = QFile::encodeName( path );
+  argv[0] = "ddjvu";
+  argv[1] = "-page";
+  argv[2] = "1";
+  argv[3] = "-size";
+  argv[4] = sizearg.data(); 
+  argv[5] = fnamearg.data(); 
+  argv[6] = 0;
+  
+  pid_t pid = fork(); 
+  if (pid == 0)
+    {
+      close(output[0]);
+      dup2(output[1], STDOUT_FILENO);	  
+      execvp(argv[0], const_cast<char *const *>(argv));
+      exit(1);
+    }
+  else if (pid >= 0)
+    {
+      close(output[1]);
+      int offset = 0;
+      while (!ok) {
+        fd_set fds;
+        FD_ZERO(&fds);
+        FD_SET(output[0], &fds);
+        struct timeval tv;
+        tv.tv_sec = 20;
+        tv.tv_usec = 0;
+        if (select(output[0] + 1, &fds, 0, 0, &tv) <= 0) {
+          if (errno == EINTR || errno == EAGAIN)
+            continue;
+          break; // error or timeout
+        }
+        if (FD_ISSET(output[0], &fds)) {
+          int count = read(output[0], data.data() + offset, 1024);
+          if (count == -1)
+            break;
+          if (count) // prepare for next block
+            {
+              offset += count;
+              data.resize(offset + 1024);
+            }
+          else // got all data
+            {
+              data.resize(offset);
+              ok = true;
+            }
+        }
+      }
+      if (!ok)
+        kill(pid, SIGTERM);
+      int status = 0;
+      if (waitpid(pid, &status, 0) != pid || (status != 0  && status != 256) )
+        ok = false;
+    }
+  else
+    {
+      close(output[1]);
+    }
+  
+  close(output[0]);
+  int l = img.loadFromData( data );
+  return ok && l;
+}
+
+
+ThumbCreator::Flags DjVuCreator::flags() const
+{
+  return static_cast<Flags>(DrawFrame);
+}
+
+