You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
140 lines
3.3 KiB
140 lines
3.3 KiB
/* 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 <tqfile.h>
|
|
#include <tqimage.h>
|
|
|
|
#include <kdemacros.h>
|
|
|
|
#include "djvucreator.h"
|
|
|
|
|
|
|
|
extern "C"
|
|
{
|
|
KDE_EXPORT ThumbCreator *new_creator()
|
|
{
|
|
return new DjVuCreator;
|
|
}
|
|
}
|
|
|
|
bool DjVuCreator::create(const TQString &path, int width, int height, TQImage &img)
|
|
{
|
|
int output[2];
|
|
TQByteArray data(1024);
|
|
bool ok = false;
|
|
|
|
if (pipe(output) == -1)
|
|
return false;
|
|
|
|
const char* argv[8];
|
|
TQCString sizearg, fnamearg;
|
|
sizearg.sprintf("%dx%d", width, height);
|
|
fnamearg = TQFile::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);
|
|
}
|
|
|
|
|