1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
|
//
// Class: dviRenderer
// Author: Stefan Kebekus
//
// (C) 2001-2004, Stefan Kebekus.
//
// Previewer for TeX DVI files.
//
// 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, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
// 02110-1301, USA.
//
// Please report bugs or improvements, etc. via the "Report bug"-Menu
// of kdvi.
#include <config.h>
#include <stdlib.h>
#include <kapplication.h>
#include <kmessagebox.h>
#include <kdebug.h>
#include <tdefiledialog.h>
#include <tdeio/job.h>
#include <tdeio/netaccess.h>
#include <klocale.h>
#include <kprinter.h>
#include <kprocess.h>
#include <ktempfile.h>
#include <tqlabel.h>
#include <tqpainter.h>
#include "dviRenderer.h"
#include "dviFile.h"
#include "fontprogress.h"
#include "infodialog.h"
#include "kdvi_multipage.h"
extern TQPainter foreGroundPaint; // TQPainter used for text
void dviRenderer::exportPDF()
{
// It could perhaps happen that a kShellProcess, which runs an
// editor for inverse search, is still running. In that case, we
// ingore any further output of the editor by detaching the
// appropriate slots. The sigal "processExited", however, remains
// attached to the slow "exportCommand_terminated", which is smart
// enough to ignore the exit status of the editor if another command
// has been called meanwhile. See also the exportPS method.
if (proc != 0) {
// Make sure all further output of the programm is ignored
tqApp->disconnect(proc, TQT_SIGNAL(receivedStderr(TDEProcess *, char *, int)), 0, 0);
tqApp->disconnect(proc, TQT_SIGNAL(receivedStdout(TDEProcess *, char *, int)), 0, 0);
proc = 0;
}
// That sould also not happen.
if (dviFile == NULL)
return;
// Is the dvipdfm-Programm available ??
TQStringList texList = TQStringList::split(":", TQString::fromLocal8Bit(getenv("PATH")));
bool found = false;
for (TQStringList::Iterator it=texList.begin(); it!=texList.end(); ++it) {
TQString temp = (*it) + "/" + "dvipdfm";
if (TQFile::exists(temp)) {
found = true;
break;
}
}
if (found == false) {
KMessageBox::sorry(0, i18n("KDVI could not locate the program 'dvipdfm' on your computer. That program is "
"essential for the export function to work. You can, however, convert "
"the DVI-file to PDF using the print function of KDVI, but that will often "
"produce documents which print ok, but are of inferior quality if viewed in the "
"Acrobat Reader. It may be wise to upgrade to a more recent version of your "
"TeX distribution which includes the 'dvipdfm' program.\n"
"Hint to the perplexed system administrator: KDVI uses the shell's PATH variable "
"when looking for programs."));
return;
}
// Generate a suggestion for a reasonable file name
TQString suggestedName = dviFile->filename;
suggestedName = suggestedName.left(suggestedName.find(".")) + ".pdf";
TQString fileName = KFileDialog::getSaveFileName(suggestedName, i18n("*.pdf|Portable Document Format (*.pdf)"), parentWidget, i18n("Export File As"));
if (fileName.isEmpty())
return;
TQFileInfo finfo(fileName);
if (finfo.exists()) {
int r = KMessageBox::warningContinueCancel (parentWidget, i18n("The file %1\nexists. Do you want to overwrite that file?").arg(fileName),
i18n("Overwrite File"), i18n("Overwrite"));
if (r == KMessageBox::Cancel)
return;
}
// Initialize the progress dialog
progress = new fontProgressDialog( TQString(),
i18n("Using dvipdfm to export the file to PDF"),
TQString(),
i18n("KDVI is currently using the external program 'dvipdfm' to "
"convert your DVI-file to PDF. Sometimes that can take "
"a while because dvipdfm needs to generate its own bitmap fonts "
"Please be patient."),
i18n("Waiting for dvipdfm to finish..."),
parentWidget, i18n("dvipdfm progress dialog"), false );
if (progress != 0) {
progress->TextLabel2->setText( i18n("Please be patient") );
progress->setTotalSteps( dviFile->total_pages );
tqApp->connect(progress, TQT_SIGNAL(finished()), this, TQT_SLOT(abortExternalProgramm()));
}
proc = new KShellProcess();
if (proc == 0) {
kdError(4300) << "Could not allocate ShellProcess for the dvipdfm command." << endl;
return;
}
tqApp->disconnect( this, TQT_SIGNAL(mySignal()), 0, 0 );
tqApp->connect(proc, TQT_SIGNAL(receivedStderr(TDEProcess *, char *, int)), this, TQT_SLOT(dvips_output_receiver(TDEProcess *, char *, int)));
tqApp->connect(proc, TQT_SIGNAL(receivedStdout(TDEProcess *, char *, int)), this, TQT_SLOT(dvips_output_receiver(TDEProcess *, char *, int)));
tqApp->connect(proc, TQT_SIGNAL(processExited(TDEProcess *)), this, TQT_SLOT(dvips_terminated(TDEProcess *)));
export_errorString = i18n("<qt>The external program 'dvipdf', which was used to export the file, reported an error. "
"You might wish to look at the <strong>document info dialog</strong> which you will "
"find in the File-Menu for a precise error report.</qt>") ;
info->clear(i18n("Export: %1 to PDF").arg(KShellProcess::quote(dviFile->filename)));
proc->clearArguments();
finfo.setFile(dviFile->filename);
*proc << TQString("cd %1; dvipdfm").arg(KShellProcess::quote(finfo.dirPath(true)));
*proc << TQString("-o %1").arg(KShellProcess::quote(fileName));
*proc << KShellProcess::quote(dviFile->filename);
proc->closeStdin();
if (proc->start(TDEProcess::NotifyOnExit, TDEProcess::AllOutput) == false) {
kdError(4300) << "dvipdfm failed to start" << endl;
return;
}
return;
}
void dviRenderer::exportPS(const TQString& fname, const TQString& options, KPrinter* printer)
{
// Safety check.
if (dviFile->page_offset.isEmpty() == true)
return;
// It could perhaps happen that a kShellProcess, which runs an
// editor for inverse search, is still running. In that case, we
// ingore any further output of the editor by detaching the
// appropriate slots. The sigal "processExited", however, remains
// attached to the slow "exportCommand_terminated", which is smart
// enough to ignore the exit status of the editor if another command
// has been called meanwhile. See also the exportPDF method.
if (proc != 0) {
tqApp->disconnect(proc, TQT_SIGNAL(receivedStderr(TDEProcess *, char *, int)), 0, 0);
tqApp->disconnect(proc, TQT_SIGNAL(receivedStdout(TDEProcess *, char *, int)), 0, 0);
proc = 0;
}
// That sould also not happen.
if (dviFile == NULL)
return;
if (dviFile->numberOfExternalNONPSFiles != 0) {
KMessageBox::sorry( parentWidget,
i18n("<qt><P>This DVI file refers to external graphic files which are not in PostScript format, and cannot be handled by the "
"<strong>dvips</strong> program that KDVI uses interally to print or to export to PostScript. The functionality that "
"you require is therefore unavailable in this version of KDVI.</p>"
"<p>As a workaround, you can use the <strong>File/Export As</strong>-Menu to save this file in PDF format, and then use "
"a PDF viewer.</p>"
"<p>The author of KDVI apologizes for the inconvenience. If enough users complain, the missing functionality might later "
"be added.</p></qt>") ,
i18n("Functionality Unavailable"));
return;
}
TQString fileName;
if (fname.isEmpty()) {
// Generate a suggestion for a reasonable file name
TQString suggestedName = dviFile->filename;
suggestedName = suggestedName.left(suggestedName.find(".")) + ".ps";
fileName = KFileDialog::getSaveFileName(suggestedName, i18n("*.ps|PostScript (*.ps)"), parentWidget, i18n("Export File As"));
if (fileName.isEmpty())
return;
TQFileInfo finfo(fileName);
if (finfo.exists()) {
int r = KMessageBox::warningYesNo (parentWidget, i18n("The file %1\nexists. Do you want to overwrite that file?").arg(fileName),
i18n("Overwrite File"));
if (r == KMessageBox::No)
return;
}
} else
fileName = fname;
export_fileName = fileName;
export_printer = printer;
// Initialize the progress dialog
progress = new fontProgressDialog( TQString(),
i18n("Using dvips to export the file to PostScript"),
TQString(),
i18n("KDVI is currently using the external program 'dvips' to "
"convert your DVI-file to PostScript. Sometimes that can take "
"a while because dvips needs to generate its own bitmap fonts "
"Please be patient."),
i18n("Waiting for dvips to finish..."),
parentWidget, i18n("dvips progress dialog"), false );
if (progress != 0) {
progress->TextLabel2->setText( i18n("Please be patient") );
progress->setTotalSteps( dviFile->total_pages );
tqApp->connect(progress, TQT_SIGNAL(finished()), this, TQT_SLOT(abortExternalProgramm()));
}
// There is a major problem with dvips, at least 5.86 and lower: the
// arguments of the option "-pp" refer to TeX-pages, not to
// sequentially numbered pages. For instance "-pp 7" may refer to 3
// or more pages: one page "VII" in the table of contents, a page
// "7" in the text body, and any number of pages "7" in various
// appendices, indices, bibliographies, and so forth. KDVI currently
// uses the following disgusting workaround: if the "options"
// variable is used, the DVI-file is copied to a temporary file, and
// all the page numbers are changed into a sequential ordering
// (using UNIX files, and taking manually care of CPU byte
// ordering). Finally, dvips is then called with the new file, and
// the file is afterwards deleted. Isn't that great?
// A similar problem occurs with DVI files that contain page size
// information. On these files, dvips pointblank refuses to change
// the page orientation or set another page size. Thus, if the
// DVI-file does contain page size information, we remove that
// information first.
// Sourcefile is the name of the DVI which is used by dvips, either
// the original file, or a temporary file with a new numbering.
TQString sourceFileName = dviFile->filename;
if ((options.isEmpty() == false) || (dviFile->suggestedPageSize != 0) ) {
// Get a name for a temporary file.
KTempFile export_tmpFile;
export_tmpFileName = export_tmpFile.name();
export_tmpFile.unlink();
sourceFileName = export_tmpFileName;
fontPool fp;
dvifile newFile(dviFile, &fp);
// Renumber pages
newFile.renumber();
// Remove any page size information from the file
TQ_UINT16 currPageSav = current_page;
dvifile *dvsav = dviFile;
dviFile = &newFile;
errorMsg = TQString();
for(current_page=0; current_page < newFile.total_pages; current_page++) {
if (current_page < newFile.total_pages) {
command_pointer = dviFile->dvi_Data() + dviFile->page_offset[current_page];
end_pointer = dviFile->dvi_Data() + dviFile->page_offset[current_page+1];
} else
command_pointer = end_pointer = 0;
memset((char *) &currinf.data, 0, sizeof(currinf.data));
currinf.fonttable = &(dviFile->tn_table);
currinf._virtual = NULL;
prescan(&dviRenderer::prescan_removePageSizeInfo);
}
current_page = currPageSav;
dviFile = dvsav;
newFile.saveAs(sourceFileName);
}
// Allocate and initialize the shell process.
proc = new KShellProcess();
if (proc == 0) {
kdError(4300) << "Could not allocate ShellProcess for the dvips command." << endl;
return;
}
tqApp->connect(proc, TQT_SIGNAL(receivedStderr(TDEProcess *, char *, int)), this, TQT_SLOT(dvips_output_receiver(TDEProcess *, char *, int)));
tqApp->connect(proc, TQT_SIGNAL(receivedStdout(TDEProcess *, char *, int)), this, TQT_SLOT(dvips_output_receiver(TDEProcess *, char *, int)));
tqApp->connect(proc, TQT_SIGNAL(processExited(TDEProcess *)), this, TQT_SLOT(dvips_terminated(TDEProcess *)));
export_errorString = i18n("<qt>The external program 'dvips', which was used to export the file, reported an error. "
"You might wish to look at the <strong>document info dialog</strong> which you will "
"find in the File-Menu for a precise error report.</qt>") ;
info->clear(i18n("Export: %1 to PostScript").arg(KShellProcess::quote(dviFile->filename)));
proc->clearArguments();
TQFileInfo finfo(dviFile->filename);
*proc << TQString("cd %1; dvips").arg(KShellProcess::quote(finfo.dirPath(true)));
if (printer == 0)
*proc << "-z"; // export Hyperlinks
if (options.isEmpty() == false)
*proc << options;
*proc << TQString("%1").arg(KShellProcess::quote(sourceFileName));
*proc << TQString("-o %1").arg(KShellProcess::quote(fileName));
proc->closeStdin();
if (proc->start(TDEProcess::NotifyOnExit, TDEProcess::Stderr) == false) {
kdError(4300) << "dvips failed to start" << endl;
return;
}
return;
}
void dviRenderer::dvips_output_receiver(TDEProcess *, char *buffer, int buflen)
{
// Paranoia.
if (buflen < 0)
return;
TQString op = TQString::fromLocal8Bit(buffer, buflen);
info->outputReceiver(op);
if (progress != 0)
progress->show();
}
void dviRenderer::dvips_terminated(TDEProcess *sproc)
{
// Give an error message from the message string. However, if the
// sproc is not the "current external process of interest", i.e. not
// the LAST external program that was started by the user, then the
// export_errorString, does not correspond to sproc. In that case,
// we ingore the return status silently.
if ((proc == sproc) && (sproc->normalExit() == true) && (sproc->exitStatus() != 0))
KMessageBox::error( parentWidget, export_errorString );
if (export_printer != 0)
export_printer->printFiles( TQStringList(export_fileName), true );
// Kill and delete the remaining process, delete the printer, etc.
abortExternalProgramm();
}
void dviRenderer::editorCommand_terminated(TDEProcess *sproc)
{
// Give an error message from the message string. However, if the
// sproc is not the "current external process of interest", i.e. not
// the LAST external program that was started by the user, then the
// export_errorString, does not correspond to sproc. In that case,
// we ingore the return status silently.
if ((proc == sproc) && (sproc->normalExit() == true) && (sproc->exitStatus() != 0))
KMessageBox::error( parentWidget, export_errorString );
// Let's hope that this is not all too nasty... killing a
// KShellProcess from a slot that was called from the KShellProcess
// itself. Until now, there weren't any problems.
// Perhaps it was a bad idea, after all.
//@@@@ delete sproc;
}
void dviRenderer::abortExternalProgramm()
{
delete proc; // Deleting the TDEProcess kills the child.
proc = 0;
if (export_tmpFileName.isEmpty() != true) {
unlink(TQFile::encodeName(export_tmpFileName)); // That should delete the file.
export_tmpFileName = "";
}
if (progress != 0) {
progress->hide();
delete progress;
progress = 0;
}
delete export_printer;
export_printer = 0;
export_fileName = "";
}
|