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authortoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
committertoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
commit4aed2c8219774f5d797760606b8489a92ddc5163 (patch)
tree3f8c130f7d269626bf6a9447407ef6c35954426a /kioslave/thumbnail/djvucreator.cpp
downloadtdebase-4aed2c8219774f5d797760606b8489a92ddc5163.tar.gz
tdebase-4aed2c8219774f5d797760606b8489a92ddc5163.zip
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
Diffstat (limited to 'kioslave/thumbnail/djvucreator.cpp')
-rw-r--r--kioslave/thumbnail/djvucreator.cpp139
1 files changed, 139 insertions, 0 deletions
diff --git a/kioslave/thumbnail/djvucreator.cpp b/kioslave/thumbnail/djvucreator.cpp
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+++ b/kioslave/thumbnail/djvucreator.cpp
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+/* 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);
+}
+
+