ps/ps-document.c

   1 /* Ghostscript widget for GTK/GNOME
   2  *
   3  * Copyright (C) 1998 - 2005 the Free Software Foundation
   4  *
   5  * Authors: Jonathan Blandford, Jaka Mocnik
   6  *
   7  * Based on code by: Federico Mena (Quartic), Szekeres Istvan (Pista)
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Library General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Library General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Library General Public
  20  * License along with this library; if not, write to the
  21  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  22  * Boston, MA 02111-1307, USA.
  23  */
  24
  25 #include "config.h"
  26 #include <string.h>
  27 #include <stdlib.h>
  28 #include <signal.h>
  29 #include <gtk/gtk.h>
  30 #include <gtk/gtkobject.h>
  31 #include <gdk/gdkprivate.h>
  32 #include <gdk/gdkx.h>
  33 #include <gdk/gdk.h>
  34 #include <glib/gi18n.h>
  35 #include <X11/Intrinsic.h>
  36 #include <unistd.h>
  37 #include <fcntl.h>
  38 #include <stdlib.h>
  39 #include <errno.h>
  40 #include <sys/stat.h>
  41 #include <sys/types.h>
  42 #include <sys/wait.h>
  43 #include <stdio.h>
  44 #include <math.h>
  45
  46 #include "ps-document.h"
  47 #include "ev-debug.h"
  48 #include "gsdefaults.h"
  49 #include "ev-ps-exporter.h"
  50 #include "ev-async-renderer.h"
  51
  52 #define MAX_BUFSIZE 1024
  53
  54 #define PS_DOCUMENT_IS_COMPRESSED(gs) (PS_DOCUMENT(gs)->gs_filename_unc != NULL)
  55 #define PS_DOCUMENT_GET_PS_FILE(gs)   (PS_DOCUMENT_IS_COMPRESSED(gs) ? \
  56                                        PS_DOCUMENT(gs)->gs_filename_unc : \
  57                                        PS_DOCUMENT(gs)->gs_filename)
  58
  59 /* structure to describe section of file to send to ghostscript */
  60 struct record_list
  61 {
  62         FILE *fp;
  63         long begin;
  64         guint len;
  65         gboolean seek_needed;
  66         gboolean close;
  67         struct record_list *next;
  68 };
  69
  70 static gboolean broken_pipe = FALSE;
  71
  72 /* Forward declarations */
  73 static void     ps_document_init                        (PSDocument           *gs);
  74 static void     ps_document_class_init                  (PSDocumentClass      *klass);
  75 static void     send_ps                                 (PSDocument           *gs,
  76                                                          long                  begin,
  77                                                          unsigned int          len,
  78                                                          gboolean              close);
  79 static void     output                                  (gpointer              data,
  80                                                          gint                  source,
  81                                                          GdkInputCondition     condition);
  82 static void     input                                   (gpointer              data,
  83                                                          gint                  source,
  84                                                          GdkInputCondition     condition);
  85 static void     stop_interpreter                        (PSDocument           *gs);
  86 static gint     start_interpreter                       (PSDocument           *gs);
  87 static void     ps_document_document_iface_init         (EvDocumentIface      *iface);
  88 static void     ps_document_ps_exporter_iface_init      (EvPSExporterIface    *iface);
  89 static void     ps_async_renderer_iface_init            (EvAsyncRendererIface *iface);
  90
  91 G_DEFINE_TYPE_WITH_CODE (PSDocument, ps_document, G_TYPE_OBJECT,
  92                          {
  93                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT,
  94                                                         ps_document_document_iface_init);
  95                                  G_IMPLEMENT_INTERFACE (EV_TYPE_PS_EXPORTER,
  96                                                         ps_document_ps_exporter_iface_init);
  97                                  G_IMPLEMENT_INTERFACE (EV_TYPE_ASYNC_RENDERER,
  98                                                         ps_async_renderer_iface_init);
  99                          });
 100
 101 static GObjectClass *parent_class = NULL;
 102 static PSDocumentClass *gs_class = NULL;
 103
 104 static void
 105 ps_document_init (PSDocument *gs)
 106 {
 107         gs->bpixmap = NULL;
 108
 109         gs->interpreter_pid = -1;
 110
 111         gs->busy = FALSE;
 112         gs->gs_filename = 0;
 113         gs->gs_filename_unc = 0;
 114
 115         broken_pipe = FALSE;
 116
 117         gs->structured_doc = FALSE;
 118         gs->reading_from_pipe = FALSE;
 119         gs->send_filename_to_gs = FALSE;
 120
 121         gs->doc = NULL;
 122
 123         gs->interpreter_input = -1;
 124         gs->interpreter_output = -1;
 125         gs->interpreter_err = -1;
 126         gs->interpreter_input_id = 0;
 127         gs->interpreter_output_id = 0;
 128         gs->interpreter_error_id = 0;
 129
 130         gs->ps_input = NULL;
 131         gs->input_buffer = NULL;
 132         gs->input_buffer_ptr = NULL;
 133         gs->bytes_left = 0;
 134         gs->buffer_bytes_left = 0;
 135
 136         gs->gs_status = _("No document loaded.");
 137
 138         gs->ps_export_pagelist = NULL;
 139         gs->ps_export_filename = NULL;
 140
 141         gs->orientation = GTK_GS_ORIENTATION_NONE;
 142 }
 143
 144 static void
 145 ps_document_dispose (GObject *object)
 146 {
 147         PSDocument *gs = PS_DOCUMENT (object);
 148
 149         g_return_if_fail (gs != NULL);
 150
 151         if (gs->gs_psfile) {
 152                 fclose (gs->gs_psfile);
 153                 gs->gs_psfile = NULL;
 154         }
 155
 156         if (gs->gs_filename) {
 157                 g_free (gs->gs_filename);
 158                 gs->gs_filename = NULL;
 159         }
 160
 161         if (gs->doc) {
 162                 psfree (gs->doc);
 163                 gs->doc = NULL;
 164         }
 165
 166         if (gs->gs_filename_unc) {
 167                 unlink(gs->gs_filename_unc);
 168                 g_free(gs->gs_filename_unc);
 169                 gs->gs_filename_unc = NULL;
 170         }
 171
 172         if (gs->bpixmap) {
 173                 gdk_drawable_unref (gs->bpixmap);
 174         }
 175
 176         if(gs->input_buffer) {
 177                 g_free(gs->input_buffer);
 178                 gs->input_buffer = NULL;
 179         }
 180
 181         stop_interpreter (gs);
 182
 183         G_OBJECT_CLASS (parent_class)->dispose (object);
 184 }
 185
 186 static void
 187 ps_document_class_init(PSDocumentClass *klass)
 188 {
 189         GObjectClass *object_class;
 190
 191         object_class = (GObjectClass *) klass;
 192         parent_class = g_type_class_peek_parent (klass);
 193         gs_class = klass;
 194
 195         object_class->dispose = ps_document_dispose;
 196
 197         klass->gs_atom = gdk_atom_intern ("GHOSTVIEW", FALSE);
 198         klass->next_atom = gdk_atom_intern ("NEXT", FALSE);
 199         klass->page_atom = gdk_atom_intern ("PAGE", FALSE);
 200         klass->string_atom = gdk_atom_intern ("STRING", FALSE);
 201 }
 202
 203 static void
 204 push_pixbuf (PSDocument *gs)
 205 {
 206         GdkColormap *cmap;
 207         GdkPixbuf *pixbuf;
 208         int width, height;
 209
 210         cmap = gdk_window_get_colormap (gs->pstarget);
 211         gdk_drawable_get_size (gs->bpixmap, &width, &height);
 212         pixbuf =  gdk_pixbuf_get_from_drawable (NULL, gs->bpixmap, cmap,
 213                                                 0, 0, 0, 0,
 214                                                 width, height);
 215         g_signal_emit_by_name (gs, "render_finished", pixbuf);
 216         g_object_unref (pixbuf);
 217 }
 218
 219 static void
 220 interpreter_failed (PSDocument *gs, char *msg)
 221 {
 222         LOG ("Interpreter failed %s", msg);
 223
 224         push_pixbuf (gs);
 225
 226         stop_interpreter (gs);
 227 }
 228
 229 static gboolean
 230 ps_document_widget_event (GtkWidget *widget, GdkEvent *event, gpointer data)
 231 {
 232         PSDocument *gs = (PSDocument *) data;
 233
 234         if(event->type != GDK_CLIENT_EVENT)
 235                 return FALSE;
 236
 237         gs->message_window = event->client.data.l[0];
 238
 239         if (event->client.message_type == gs_class->page_atom) {
 240                 LOG ("GS rendered the document");
 241                 gs->busy = FALSE;
 242
 243                 push_pixbuf (gs);
 244         }
 245
 246         return TRUE;
 247 }
 248
 249 static void
 250 send_ps (PSDocument *gs, long begin, unsigned int len, gboolean close)
 251 {
 252         struct record_list *ps_new;
 253
 254         if (gs->interpreter_input < 0) {
 255                 g_critical("No pipe to gs: error in send_ps().");
 256                 return;
 257         }
 258
 259         ps_new = g_new0 (struct record_list, 1);
 260         ps_new->fp = gs->gs_psfile;
 261         ps_new->begin = begin;
 262         ps_new->len = len;
 263         ps_new->seek_needed = TRUE;
 264         ps_new->close = close;
 265         ps_new->next = NULL;
 266
 267         if (gs->input_buffer == NULL) {
 268                 gs->input_buffer = g_malloc(MAX_BUFSIZE);
 269         }
 270
 271         if (gs->ps_input == NULL) {
 272                 gs->input_buffer_ptr = gs->input_buffer;
 273                 gs->bytes_left = len;
 274                 gs->buffer_bytes_left = 0;
 275                 gs->ps_input = ps_new;
 276                 gs->interpreter_input_id = gdk_input_add
 277                         (gs->interpreter_input, GDK_INPUT_WRITE, input, gs);
 278         } else {
 279                 struct record_list *p = gs->ps_input;
 280                 while (p->next != NULL) {
 281                         p = p->next;
 282                 }
 283                 p->next = ps_new;
 284         }
 285 }
 286
 287 static float
 288 get_xdpi (PSDocument *gs)
 289 {
 290         return 25.4 * gdk_screen_width() / gdk_screen_width_mm();
 291 }
 292
 293 static float
 294 get_ydpi (PSDocument *gs)
 295 {
 296         return 25.4 * gdk_screen_height() / gdk_screen_height_mm();
 297 }
 298
 299 static void
 300 setup_pixmap (PSDocument *gs, int page, double scale)
 301 {
 302         GdkGC *fill;
 303         GdkColor white = { 0, 0xFFFF, 0xFFFF, 0xFFFF };   /* pixel, r, g, b */
 304         GdkColormap *colormap;
 305         double width, height;
 306         int pixmap_width, pixmap_height;
 307
 308         ev_document_get_page_size (EV_DOCUMENT (gs), page, &width, &height);
 309         pixmap_width = width * scale + 0.5;
 310         pixmap_height = height * scale + 0.5;
 311
 312         if(gs->bpixmap) {
 313                 int w, h;
 314
 315                 gdk_drawable_get_size (gs->bpixmap, &w, &h);
 316
 317                 if (pixmap_width != w || h != pixmap_height) {
 318                         gdk_drawable_unref (gs->bpixmap);
 319                         gs->bpixmap = NULL;
 320                         stop_interpreter (gs);
 321                 }
 322         }
 323
 324         if (!gs->bpixmap) {
 325                 LOG ("Create pixmap");
 326
 327                 fill = gdk_gc_new (gs->pstarget);
 328                 colormap = gdk_drawable_get_colormap (gs->pstarget);
 329                 gdk_color_alloc (colormap, &white);
 330                 gdk_gc_set_foreground (fill, &white);
 331                 gs->bpixmap = gdk_pixmap_new (gs->pstarget, pixmap_width,
 332                                               pixmap_height, -1);
 333                 gdk_draw_rectangle (gs->bpixmap, fill, TRUE,
 334                                     0, 0, pixmap_width, pixmap_height);
 335         }
 336 }
 337
 338 #define DEFAULT_PAGE_SIZE 1
 339
 340 static void
 341 get_page_box (PSDocument *gs, int page, int *urx, int *ury, int *llx, int *lly)
 342 {
 343         gint new_llx = 0;
 344         gint new_lly = 0;
 345         gint new_urx = 0;
 346         gint new_ury = 0;
 347         GtkGSPaperSize *papersizes = gtk_gs_defaults_get_paper_sizes ();
 348         int new_pagesize = -1;
 349
 350         g_return_if_fail (PS_IS_DOCUMENT (gs));
 351
 352         if (new_pagesize == -1) {
 353                 new_pagesize = DEFAULT_PAGE_SIZE;
 354                 if (gs->doc) {
 355                 /* If we have a document:
 356                  * We use -- the page size (if specified)
 357                  * or the doc. size (if specified)
 358                  * or the page bbox (if specified)
 359                  * or the bounding box
 360                  */
 361                         if ((page >= 0) && (gs->doc->numpages > page) &&
 362                             (gs->doc->pages) && (gs->doc->pages[page].size)) {
 363                                 new_pagesize = gs->doc->pages[page].size - gs->doc->size;
 364                         } else if (gs->doc->default_page_size != NULL) {
 365                                 new_pagesize = gs->doc->default_page_size - gs->doc->size;
 366                         } else if ((page >= 0) &&
 367                                    (gs->doc->numpages > page) &&
 368                                    (gs->doc->pages) &&
 369                                    (gs->doc->pages[page].boundingbox[URX] >
 370                                     gs->doc->pages[page].boundingbox[LLX]) &&
 371                                    (gs->doc->pages[page].boundingbox[URY] >
 372                                     gs->doc->pages[page].boundingbox[LLY])) {
 373                                 new_pagesize = -1;
 374                         } else if ((gs->doc->boundingbox[URX] > gs->doc->boundingbox[LLX]) &&
 375                                    (gs->doc->boundingbox[URY] > gs->doc->boundingbox[LLY])) {
 376                                 new_pagesize = -1;
 377                         }
 378                 }
 379         }
 380
 381         /* Compute bounding box */
 382         if (gs->doc && (gs->doc->epsf || new_pagesize == -1)) {    /* epsf or bbox */
 383                 if ((page >= 0) &&
 384                     (gs->doc->pages) &&
 385                     (gs->doc->pages[page].boundingbox[URX] >
 386                      gs->doc->pages[page].boundingbox[LLX]) &&
 387                     (gs->doc->pages[page].boundingbox[URY] >
 388                      gs->doc->pages[page].boundingbox[LLY])) {
 389                         /* use page bbox */
 390                         new_llx = gs->doc->pages[page].boundingbox[LLX];
 391                         new_lly = gs->doc->pages[page].boundingbox[LLY];
 392                         new_urx = gs->doc->pages[page].boundingbox[URX];
 393                         new_ury = gs->doc->pages[page].boundingbox[URY];
 394                 } else if ((gs->doc->boundingbox[URX] > gs->doc->boundingbox[LLX]) &&
 395                            (gs->doc->boundingbox[URY] > gs->doc->boundingbox[LLY])) {
 396                         /* use doc bbox */
 397                         new_llx = gs->doc->boundingbox[LLX];
 398                         new_lly = gs->doc->boundingbox[LLY];
 399                         new_urx = gs->doc->boundingbox[URX];
 400                         new_ury = gs->doc->boundingbox[URY];
 401                 }
 402         } else {
 403                 if (new_pagesize < 0)
 404                         new_pagesize = DEFAULT_PAGE_SIZE;
 405                 new_llx = new_lly = 0;
 406                 if (gs->doc && gs->doc->size &&
 407                     (new_pagesize < gs->doc->numsizes)) {
 408                         new_urx = gs->doc->size[new_pagesize].width;
 409                         new_ury = gs->doc->size[new_pagesize].height;
 410                 } else {
 411                         new_urx = papersizes[new_pagesize].width;
 412                         new_ury = papersizes[new_pagesize].height;
 413                 }
 414         }
 415
 416         if (new_urx <= new_llx)
 417                 new_urx = papersizes[12].width;
 418         if (new_ury <= new_lly)
 419                 new_ury = papersizes[12].height;
 420
 421         *urx = new_urx;
 422         *ury = new_ury;
 423         *llx = new_llx;
 424         *lly = new_lly;
 425 }
 426
 427 static int
 428 get_page_orientation (PSDocument *gs, int page)
 429 {
 430         int orientation;
 431
 432         orientation = GTK_GS_ORIENTATION_NONE;
 433
 434         if (gs->structured_doc) {
 435                 orientation = gs->doc->pages[page].orientation;
 436         }
 437         if (orientation == GTK_GS_ORIENTATION_NONE) {
 438                 orientation = gs->doc->default_page_orientation;
 439         }
 440         if (orientation == GTK_GS_ORIENTATION_NONE) {
 441                 orientation = gs->doc->orientation;
 442         }
 443         if (orientation == GTK_GS_ORIENTATION_NONE) {
 444                 orientation = GTK_GS_ORIENTATION_PORTRAIT;
 445         }
 446         if (gs->orientation != GTK_GS_ORIENTATION_NONE) {
 447                 orientation = gs->orientation;
 448         }
 449
 450         return orientation;
 451 }
 452
 453 static void
 454 setup_page (PSDocument *gs, int page, double scale)
 455 {
 456         char buf[1024];
 457         int urx, ury, llx, lly, orientation;
 458 #ifdef HAVE_LOCALE_H
 459         char *savelocale;
 460 #endif
 461
 462         LOG ("Setup the page");
 463
 464 #ifdef HAVE_LOCALE_H
 465         /* gs needs floating point parameters with '.' as decimal point
 466          * while some (european) locales use ',' instead, so we set the
 467          * locale for this snprintf to "C".
 468          */
 469         savelocale = setlocale (LC_NUMERIC, "C");
 470 #endif
 471         get_page_box (gs, page, &urx, &ury, &llx, &lly);
 472         orientation = get_page_orientation (gs, page);
 473
 474         g_snprintf (buf, 1024, "%ld %d %d %d %d %d %f %f %d %d %d %d",
 475                     0L, orientation * 90, llx, lly, urx, ury,
 476                     get_xdpi (gs) * scale,
 477                     get_ydpi (gs) * scale,
 478                     0, 0, 0, 0);
 479         LOG ("GS property %s", buf);
 480
 481 #ifdef HAVE_LOCALE_H
 482         setlocale(LC_NUMERIC, savelocale);
 483 #endif
 484         gdk_property_change (gs->pstarget, gs_class->gs_atom, gs_class->string_atom,
 485                              8, GDK_PROP_MODE_REPLACE, (guchar *)buf, strlen(buf));
 486         gdk_flush ();
 487 }
 488
 489 static void
 490 close_pipe (int p[2])
 491 {
 492         if (p[0] != -1) {
 493                 close (p[0]);
 494         }
 495         if (p[1] != -1) {
 496                 close (p[1]);
 497         }
 498 }
 499
 500 static gboolean
 501 is_interpreter_ready (PSDocument *gs)
 502 {
 503         return (gs->interpreter_pid != -1 && !gs->busy && gs->ps_input == NULL);
 504 }
 505
 506 static void
 507 output (gpointer data, gint source, GdkInputCondition condition)
 508 {
 509         char buf[MAX_BUFSIZE + 1];
 510         guint bytes = 0;
 511         PSDocument *gs = PS_DOCUMENT(data);
 512
 513         if (source == gs->interpreter_output) {
 514                 bytes = read(gs->interpreter_output, buf, MAX_BUFSIZE);
 515                 if (bytes == 0) {            /* EOF occurred */
 516                         close (gs->interpreter_output);
 517                         gs->interpreter_output = -1;
 518                         gdk_input_remove (gs->interpreter_output_id);
 519                         return;
 520                 } else if (bytes == -1) {
 521                         /* trouble... */
 522                         interpreter_failed (gs, NULL);
 523                         return;
 524                 }
 525                 if (gs->interpreter_err == -1) {
 526                         interpreter_failed (gs, NULL);
 527                 }
 528         } else if (source == gs->interpreter_err) {
 529                 bytes = read (gs->interpreter_err, buf, MAX_BUFSIZE);
 530                 if (bytes == 0) {            /* EOF occurred */
 531                         close (gs->interpreter_err);
 532                         gs->interpreter_err = -1;
 533                         gdk_input_remove (gs->interpreter_error_id);
 534                         return;
 535                 } else if (bytes == -1) {
 536                         /* trouble... */
 537                         interpreter_failed (gs, NULL);
 538                         return;
 539                 }
 540                 if (gs->interpreter_output == -1) {
 541                         interpreter_failed(gs, NULL);
 542                 }
 543         }
 544
 545         if (bytes > 0) {
 546                 buf[bytes] = '\0';
 547                 printf ("%s", buf);
 548         }
 549 }
 550
 551 static void
 552 catchPipe (int i)
 553 {
 554         broken_pipe = True;
 555 }
 556
 557 static void
 558 input(gpointer data, gint source, GdkInputCondition condition)
 559 {
 560         PSDocument *gs = PS_DOCUMENT(data);
 561         int bytes_written;
 562         void (*oldsig) (int);
 563         oldsig = signal(SIGPIPE, catchPipe);
 564
 565         LOG ("Input");
 566
 567         do {
 568                 if (gs->buffer_bytes_left == 0) {
 569                         /* Get a new section if required */
 570                         if (gs->ps_input && gs->bytes_left == 0) {
 571                                 struct record_list *ps_old = gs->ps_input;
 572                                 gs->ps_input = ps_old->next;
 573                                 if (ps_old->close && NULL != ps_old->fp)
 574                                         fclose (ps_old->fp);
 575                                 g_free (ps_old);
 576                         }
 577
 578                         /* Have to seek at the beginning of each section */
 579                         if (gs->ps_input && gs->ps_input->seek_needed) {
 580                                 fseek (gs->ps_input->fp, gs->ps_input->begin, SEEK_SET);
 581                                 gs->ps_input->seek_needed = FALSE;
 582                                 gs->bytes_left = gs->ps_input->len;
 583                         }
 584
 585                         if (gs->bytes_left > MAX_BUFSIZE) {
 586                                 gs->buffer_bytes_left = fread (gs->input_buffer, sizeof(char),
 587                                                                MAX_BUFSIZE, gs->ps_input->fp);
 588                         } else if (gs->bytes_left > 0) {
 589                                 gs->buffer_bytes_left = fread (gs->input_buffer, sizeof(char),
 590                                                                gs->bytes_left, gs->ps_input->fp);
 591                         } else {
 592                                 gs->buffer_bytes_left = 0;
 593                         }
 594                         if (gs->bytes_left > 0 && gs->buffer_bytes_left == 0) {
 595                                 interpreter_failed (gs, NULL); /* Error occurred */
 596                         }
 597                         gs->input_buffer_ptr = gs->input_buffer;
 598                         gs->bytes_left -= gs->buffer_bytes_left;
 599                 }
 600
 601                 if (gs->buffer_bytes_left > 0) {
 602                         bytes_written = write (gs->interpreter_input,
 603                                                gs->input_buffer_ptr, gs->buffer_bytes_left);
 604
 605                         if (broken_pipe) {
 606                                 interpreter_failed (gs, g_strdup(_("Broken pipe.")));
 607                                 broken_pipe = FALSE;
 608                                 interpreter_failed (gs, NULL);
 609                         } else if (bytes_written == -1) {
 610                                 if ((errno != EWOULDBLOCK) && (errno != EAGAIN)) {
 611                                         interpreter_failed (gs, NULL);   /* Something bad happened */
 612                                 }
 613                                 } else {
 614                                 gs->buffer_bytes_left -= bytes_written;
 615                                 gs->input_buffer_ptr += bytes_written;
 616                         }
 617                 }
 618         } while (gs->ps_input && gs->buffer_bytes_left == 0);
 619
 620         signal (SIGPIPE, oldsig);
 621
 622         if (gs->ps_input == NULL && gs->buffer_bytes_left == 0) {
 623                 if (gs->interpreter_input_id != 0) {
 624                         gdk_input_remove (gs->interpreter_input_id);
 625                         gs->interpreter_input_id = 0;
 626                 }
 627         }
 628 }
 629
 630 static int
 631 start_interpreter (PSDocument *gs)
 632 {
 633         int std_in[2] = { -1, -1 };   /* pipe to interp stdin */
 634         int std_out[2];               /* pipe from interp stdout */
 635         int std_err[2];               /* pipe from interp stderr */
 636
 637 #define NUM_ARGS    100
 638 #define NUM_GS_ARGS (NUM_ARGS - 20)
 639 #define NUM_ALPHA_ARGS 10
 640
 641         char *argv[NUM_ARGS], *dir, *gv_env;
 642         char **gs_args, **alpha_args = NULL;
 643         int argc = 0, i;
 644
 645         LOG ("Start the interpreter");
 646
 647         if(!gs->gs_filename)
 648                 return 0;
 649
 650         stop_interpreter(gs);
 651
 652         /* set up the args... */
 653         gs_args = g_strsplit (gtk_gs_defaults_get_interpreter_cmd (), " ", NUM_GS_ARGS);
 654         for(i = 0; i < NUM_GS_ARGS && gs_args[i]; i++, argc++) {
 655                 argv[argc] = gs_args[i];
 656         }
 657
 658         alpha_args = g_strsplit (ALPHA_PARAMS, " ", NUM_ALPHA_ARGS);
 659         for(i = 0; i < NUM_ALPHA_ARGS && alpha_args[i]; i++, argc++) {
 660                 argv[argc] = alpha_args[i];
 661         }
 662
 663         argv[argc++] = "-dNOPAUSE";
 664         argv[argc++] = "-dQUIET";
 665         argv[argc++] = "-dSAFER";
 666
 667         /* set up the pipes */
 668         if (gs->send_filename_to_gs) {
 669                 argv[argc++] = PS_DOCUMENT_GET_PS_FILE (gs);
 670                 argv[argc++] = "-c";
 671                 argv[argc++] = "quit";
 672         } else {
 673                 argv[argc++] = "-";
 674         }
 675
 676         argv[argc++] = NULL;
 677
 678         if (!gs->reading_from_pipe && !gs->send_filename_to_gs) {
 679                 if (pipe (std_in) == -1) {
 680                         g_critical ("Unable to open pipe to Ghostscript.");
 681                         return -1;
 682                 }
 683         }
 684
 685         if (pipe (std_out) == -1) {
 686                 close_pipe (std_in);
 687                 return -1;
 688         }
 689
 690         if (pipe(std_err) == -1) {
 691                 close_pipe (std_in);
 692                 close_pipe (std_out);
 693                 return -1;
 694         }
 695
 696         gv_env = g_strdup_printf ("GHOSTVIEW=%ld %ld",
 697                                   gdk_x11_drawable_get_xid (gs->pstarget),
 698                                   gdk_x11_drawable_get_xid (gs->bpixmap));
 699         LOG ("Launching ghostview with env %s", gv_env);
 700
 701         gs->interpreter_pid = fork ();
 702         switch (gs->interpreter_pid) {
 703                 case -1:                     /* error */
 704                         close_pipe (std_in);
 705                         close_pipe (std_out);
 706                         close_pipe (std_err);
 707                         return -2;
 708                         break;
 709                 case 0:                      /* child */
 710                         close (std_out[0]);
 711                         dup2 (std_out[1], 1);
 712                         close (std_out[1]);
 713
 714                         close (std_err[0]);
 715                         dup2 (std_err[1], 2);
 716                         close (std_err[1]);
 717
 718                         if (!gs->reading_from_pipe) {
 719                                 if (gs->send_filename_to_gs) {
 720                                         int stdinfd;
 721                                         /* just in case gs tries to read from stdin */
 722                                         stdinfd = open("/dev/null", O_RDONLY);
 723                                         if (stdinfd != 0) {
 724                                                 dup2(stdinfd, 0);
 725                                                 close(stdinfd);
 726                                         }
 727                                 } else {
 728                                         close (std_in[1]);
 729                                         dup2 (std_in[0], 0);
 730                                         close (std_in[0]);
 731                                 }
 732                         }
 733
 734                         putenv(gv_env);
 735
 736                         /* change to directory where the input file is. This helps
 737                          * with postscript-files which include other files using
 738                          * a relative path */
 739                         dir = g_path_get_dirname (gs->gs_filename);
 740                         chdir (dir);
 741                         g_free (dir);
 742
 743                         execvp (argv[0], argv);
 744
 745                         /* Notify error */
 746                         g_critical ("Unable to execute [%s]\n", argv[0]);
 747                         g_strfreev (gs_args);
 748                         g_free (gv_env);
 749                         g_strfreev (alpha_args);
 750                         _exit (1);
 751                         break;
 752                 default:                     /* parent */
 753                         if (!gs->send_filename_to_gs && !gs->reading_from_pipe) {
 754                                 int result;
 755                                 close (std_in[0]);
 756                                 /* use non-blocking IO for pipe to ghostscript */
 757                                 result = fcntl (std_in[1], F_GETFL, 0);
 758                                 fcntl (std_in[1], F_SETFL, result | O_NONBLOCK);
 759                                 gs->interpreter_input = std_in[1];
 760                         } else {
 761                                 gs->interpreter_input = -1;
 762                         }
 763                         close (std_out[1]);
 764
 765                         gs->interpreter_output = std_out[0];
 766                         close (std_err[1]);
 767                         gs->interpreter_err = std_err[0];
 768                         gs->interpreter_output_id =
 769                                 gdk_input_add (std_out[0], GDK_INPUT_READ, output, gs);
 770                         gs->interpreter_error_id =
 771                                 gdk_input_add (std_err[0], GDK_INPUT_READ, output, gs);
 772                         break;
 773         }
 774
 775         return TRUE;
 776 }
 777
 778 static void
 779 stop_interpreter(PSDocument * gs)
 780 {
 781         if (gs->interpreter_pid > 0) {
 782                 int status = 0;
 783                 LOG ("Stop the interpreter");
 784                 kill (gs->interpreter_pid, SIGTERM);
 785                 while ((wait(&status) == -1) && (errno == EINTR));
 786                 gs->interpreter_pid = -1;
 787                 if (status == 1) {
 788                         gs->gs_status = _("Interpreter failed.");
 789                 }
 790         }
 791
 792         if (gs->interpreter_input >= 0) {
 793                 close (gs->interpreter_input);
 794                 gs->interpreter_input = -1;
 795                 if (gs->interpreter_input_id != 0) {
 796                         gdk_input_remove(gs->interpreter_input_id);
 797                         gs->interpreter_input_id = 0;
 798                 }
 799                 while (gs->ps_input) {
 800                         struct record_list *ps_old = gs->ps_input;
 801                         gs->ps_input = gs->ps_input->next;
 802                         if (ps_old->close && NULL != ps_old->fp)
 803                                 fclose (ps_old->fp);
 804                         g_free (ps_old);
 805                 }
 806         }
 807
 808         if (gs->interpreter_output >= 0) {
 809                 close (gs->interpreter_output);
 810                 gs->interpreter_output = -1;
 811                 if (gs->interpreter_output_id) {
 812                         gdk_input_remove (gs->interpreter_output_id);
 813                         gs->interpreter_output_id = 0;
 814                 }
 815         }
 816
 817         if (gs->interpreter_err >= 0) {
 818                 close (gs->interpreter_err);
 819                 gs->interpreter_err = -1;
 820                 if (gs->interpreter_error_id) {
 821                         gdk_input_remove (gs->interpreter_error_id);
 822                         gs->interpreter_error_id = 0;
 823                 }
 824         }
 825
 826         gs->busy = FALSE;
 827 }
 828
 829 /* If file exists and is a regular file then return its length, else -1 */
 830 static gint
 831 file_length (const gchar * filename)
 832 {
 833         struct stat stat_rec;
 834
 835         if (filename && (stat (filename, &stat_rec) == 0) && S_ISREG (stat_rec.st_mode))
 836                 return stat_rec.st_size;
 837         else
 838                 return -1;
 839 }
 840
 841 /* Test if file exists, is a regular file and its length is > 0 */
 842 static gboolean
 843 file_readable(const char *filename)
 844 {
 845         return (file_length (filename) > 0);
 846 }
 847
 848 /*
 849  * Decompress gs->gs_filename if necessary
 850  * Set gs->filename_unc to the name of the uncompressed file or NULL.
 851  * Error reporting via signal 'interpreter_message'
 852  * Return name of input file to use or NULL on error..
 853  */
 854 static gchar *
 855 check_filecompressed (PSDocument * gs)
 856 {
 857         FILE *file;
 858         gchar buf[1024];
 859         gchar *filename, *filename_unc, *filename_err, *cmdline;
 860         const gchar *cmd;
 861         int fd;
 862
 863         cmd = NULL;
 864
 865         if ((file = fopen(gs->gs_filename, "r")) &&
 866             (fread (buf, sizeof(gchar), 3, file) == 3)) {
 867                 if ((buf[0] == '\037') && ((buf[1] == '\235') || (buf[1] == '\213'))) {
 868                         /* file is gzipped or compressed */
 869                         cmd = gtk_gs_defaults_get_ungzip_cmd ();
 870                 } else if (strncmp (buf, "BZh", 3) == 0) {
 871                         /* file is compressed with bzip2 */
 872                         cmd = gtk_gs_defaults_get_unbzip2_cmd ();
 873                 }
 874         }
 875
 876         if (NULL != file)
 877                 fclose(file);
 878
 879         if (!cmd)
 880                 return gs->gs_filename;
 881
 882         /* do the decompression */
 883         filename = g_shell_quote (gs->gs_filename);
 884         filename_unc = g_strconcat (g_get_tmp_dir (), "/evinceXXXXXX", NULL);
 885         if ((fd = mkstemp (filename_unc)) < 0) {
 886                 g_free (filename_unc);
 887                 g_free (filename);
 888                 return NULL;
 889         }
 890         close (fd);
 891
 892         filename_err = g_strconcat (g_get_tmp_dir (), "/evinceXXXXXX", NULL);
 893         if ((fd = mkstemp(filename_err)) < 0) {
 894                 g_free (filename_err);
 895                 g_free (filename_unc);
 896                 g_free (filename);
 897                 return NULL;
 898         }
 899         close (fd);
 900
 901         cmdline = g_strdup_printf ("%s %s >%s 2>%s", cmd,
 902                                    filename, filename_unc, filename_err);
 903         if (system (cmdline) == 0 &&
 904             file_readable (filename_unc) &&
 905             file_length (filename_err) == 0) {
 906                 /* sucessfully uncompressed file */
 907                 gs->gs_filename_unc = filename_unc;
 908         } else {
 909                 /* report error */
 910                 g_snprintf (buf, 1024, _("Error while decompressing file %s:\n"),
 911                             gs->gs_filename);
 912                 interpreter_failed (gs, buf);
 913                 unlink (filename_unc);
 914                 g_free (filename_unc);
 915                 filename_unc = NULL;
 916         }
 917
 918         unlink (filename_err);
 919         g_free (filename_err);
 920         g_free (cmdline);
 921         g_free (filename);
 922
 923         return filename_unc;
 924 }
 925
 926 static gint
 927 ps_document_enable_interpreter(PSDocument *gs)
 928 {
 929         g_return_val_if_fail (PS_IS_DOCUMENT (gs), FALSE);
 930
 931         if (!gs->gs_filename)
 932                 return 0;
 933
 934         return start_interpreter (gs);
 935 }
 936
 937 static gboolean
 938 document_load (PSDocument *gs, const gchar *fname)
 939 {
 940         g_return_val_if_fail (PS_IS_DOCUMENT(gs), FALSE);
 941
 942         LOG ("Load the document");
 943
 944         if (fname == NULL) {
 945                 gs->gs_status = "";
 946                 return FALSE;
 947         }
 948
 949         /* prepare this document */
 950         gs->structured_doc = FALSE;
 951         gs->send_filename_to_gs = TRUE;
 952         gs->gs_filename = g_strdup (fname);
 953
 954         if ((gs->reading_from_pipe = (strcmp (fname, "-") == 0))) {
 955                 gs->send_filename_to_gs = FALSE;
 956         } else {
 957                 /*
 958                  * We need to make sure that the file is loadable/exists!
 959                  * otherwise we want to exit without loading new stuff...
 960                  */
 961                 gchar *filename = NULL;
 962
 963                 if (!file_readable(fname)) {
 964                         gchar buf[1024];
 965
 966                         g_snprintf (buf, 1024, _("Cannot open file %s.\n"), fname);
 967                         interpreter_failed (gs, buf);
 968                         gs->gs_status = _("File is not readable.");
 969                 } else {
 970                         filename = check_filecompressed(gs);
 971                 }
 972
 973                 if (!filename || (gs->gs_psfile = fopen(filename, "r")) == NULL) {
 974                         interpreter_failed (gs, NULL);
 975                         return FALSE;
 976                 }
 977
 978                 /* we grab the vital statistics!!! */
 979                 gs->doc = psscan(gs->gs_psfile, TRUE, filename);
 980
 981                 if ((!gs->doc->epsf && gs->doc->numpages > 0) ||
 982                     (gs->doc->epsf && gs->doc->numpages > 1)) {
 983                         gs->structured_doc = TRUE;
 984                         gs->send_filename_to_gs = FALSE;
 985                 }
 986         }
 987
 988         gs->gs_status = _("Document loaded.");
 989
 990         return TRUE;
 991 }
 992
 993 static gboolean
 994 ps_document_next_page (PSDocument *gs)
 995 {
 996         XEvent event;
 997
 998         LOG ("Make ghostscript render next page");
 999
1000         g_return_val_if_fail (PS_IS_DOCUMENT(gs), FALSE);
1001         g_return_val_if_fail (gs->interpreter_pid != 0, FALSE);
1002         g_return_val_if_fail (gs->busy != TRUE, FALSE);
1003
1004         gs->busy = TRUE;
1005
1006         event.xclient.type = ClientMessage;
1007         event.xclient.display = gdk_display;
1008         event.xclient.window = gs->message_window;
1009         event.xclient.message_type = gdk_x11_atom_to_xatom(gs_class->next_atom);
1010         event.xclient.format = 32;
1011
1012         gdk_error_trap_push ();
1013         XSendEvent (gdk_display, gs->message_window, FALSE, 0, &event);
1014         gdk_flush ();
1015         gdk_error_trap_pop ();
1016
1017         return TRUE;
1018 }
1019
1020 static gboolean
1021 render_page (PSDocument *gs, int page)
1022 {
1023         g_return_val_if_fail(gs != NULL, FALSE);
1024         g_return_val_if_fail(PS_IS_DOCUMENT(gs), FALSE);
1025
1026         if(!gs->gs_filename) {
1027                 return FALSE;
1028         }
1029
1030         if (gs->structured_doc && gs->doc) {
1031                 LOG ("It's a structured document, let's send one page to gs");
1032
1033                 if (is_interpreter_ready (gs)) {
1034                         ps_document_next_page (gs);
1035                 } else {
1036                         ps_document_enable_interpreter (gs);
1037                         send_ps (gs, gs->doc->beginprolog, gs->doc->lenprolog, FALSE);
1038                         send_ps (gs, gs->doc->beginsetup, gs->doc->lensetup, FALSE);
1039                 }
1040
1041                 send_ps (gs, gs->doc->pages[page].begin,
1042                          gs->doc->pages[page].len, FALSE);
1043         } else {
1044                 /* Unstructured document
1045                  *
1046                  * In the case of non structured documents,
1047                  * GS read the PS from the  actual file (via command
1048                  * line. Hence, ggv only send a signal next page.
1049                  * If ghostview is not running it is usually because
1050                  * the last page of the file was displayed. In that
1051                  * case, ggv restarts GS again and the first page is displayed.
1052                  */
1053
1054                 LOG ("It's an unstructured document, gs will just read the file");
1055
1056                 if (!is_interpreter_ready (gs)) {
1057                         ps_document_enable_interpreter(gs);
1058                 }
1059                 ps_document_next_page(gs);
1060         }
1061
1062         return TRUE;
1063 }
1064
1065 static gboolean
1066 ps_document_load (EvDocument  *document,
1067                   const char  *uri,
1068                   GError     **error)
1069 {
1070         gboolean result;
1071         char *filename;
1072
1073         filename = g_filename_from_uri (uri, NULL, error);
1074         if (!filename)
1075                 return FALSE;
1076
1077         result = document_load (PS_DOCUMENT (document), filename);
1078         if (!result) {
1079                 g_set_error (error, G_FILE_ERROR,
1080                              G_FILE_ERROR_FAILED,
1081                              "Failed to load document '%s'\n",
1082                              uri);
1083         }
1084
1085         g_free (filename);
1086
1087         return result;
1088 }
1089
1090 static gboolean
1091 save_page_list (PSDocument *document, int *page_list, const char *filename)
1092 {
1093         gboolean result = TRUE;
1094         GtkGSDocSink *sink = gtk_gs_doc_sink_new ();
1095         FILE *f;
1096         gchar *buf;
1097
1098         pscopydoc (sink, document->gs_filename, document->doc, page_list);
1099
1100         buf = gtk_gs_doc_sink_get_buffer (sink);
1101
1102         f = fopen (filename, "w");
1103         if (f) {
1104                 fputs (buf, f);
1105                 fclose (f);
1106         } else {
1107                 result = FALSE;
1108         }
1109
1110         g_free (buf);
1111         gtk_gs_doc_sink_free (sink);
1112         g_free (sink);
1113
1114         return result;
1115 }
1116
1117 static gboolean
1118 ps_document_save (EvDocument  *document,
1119                   const char  *uri,
1120                   GError     **error)
1121 {
1122         PSDocument *ps = PS_DOCUMENT (document);
1123         int *page_list;
1124         gboolean result;
1125         int i;
1126         char *filename;
1127
1128         filename = g_filename_from_uri (uri, NULL, error);
1129         if (!filename)
1130                 return FALSE;
1131
1132         page_list = g_new0 (int, ps->doc->numpages);
1133         for (i = 0; i < ps->doc->numpages; i++) {
1134                 page_list[i] = 1;
1135         }
1136
1137         result = save_page_list (ps, page_list, filename);
1138
1139         g_free (page_list);
1140         g_free (filename);
1141
1142         return result;
1143 }
1144
1145 static int
1146 ps_document_get_n_pages (EvDocument  *document)
1147 {
1148         PSDocument *ps = PS_DOCUMENT (document);
1149
1150         g_return_val_if_fail (ps != NULL, -1);
1151
1152         if (!ps->gs_filename || !ps->doc) {
1153                 return -1;
1154         }
1155
1156         return ps->structured_doc ? ps->doc->numpages : 1;
1157 }
1158
1159 static void
1160 ps_document_get_page_size (EvDocument   *document,
1161                            int           page,
1162                            double       *width,
1163                            double       *height)
1164 {
1165         PSDocument *gs = PS_DOCUMENT (document);
1166         int w, h;
1167         int urx, ury, llx, lly, orientation;
1168
1169         get_page_box (PS_DOCUMENT (document), page, &urx, &ury, &llx, &lly);
1170         orientation = get_page_orientation (PS_DOCUMENT (document), page);
1171
1172         switch (orientation) {
1173                 case GTK_GS_ORIENTATION_PORTRAIT:
1174                 case GTK_GS_ORIENTATION_UPSIDEDOWN:
1175                         w = (urx - llx) / 72.0 * get_xdpi (gs) + 0.5;
1176                         h = (ury - lly) / 72.0 * get_ydpi (gs) + 0.5;
1177                         break;
1178                 case GTK_GS_ORIENTATION_LANDSCAPE:
1179                 case GTK_GS_ORIENTATION_SEASCAPE:
1180                         w = (ury - lly) / 72.0 * get_xdpi (gs) + 0.5;
1181                         h = (urx - llx) / 72.0 * get_ydpi (gs) + 0.5;
1182                         break;
1183                 default:
1184                         w = h = 0;
1185                         g_assert_not_reached ();
1186                         break;
1187         }
1188
1189         if (width) {
1190                 *width = w;
1191         }
1192
1193         if (height) {
1194                 *height = h;
1195         }
1196 }
1197
1198 static gboolean
1199 ps_document_can_get_text (EvDocument *document)
1200 {
1201         return FALSE;
1202 }
1203
1204 static void
1205 ps_async_renderer_render_pixbuf (EvAsyncRenderer *renderer, int page, double scale)
1206 {
1207         PSDocument *gs = PS_DOCUMENT (renderer);
1208
1209         if (gs->pstarget == NULL) {
1210                 GtkWidget *widget;
1211
1212                 widget = gtk_window_new (GTK_WINDOW_POPUP);
1213                 gtk_widget_realize (widget);
1214                 gs->pstarget = widget->window;
1215
1216                 g_assert (gs->pstarget != NULL);
1217
1218                 g_signal_connect (widget, "event",
1219                                   G_CALLBACK (ps_document_widget_event),
1220                                   gs);
1221         }
1222
1223         setup_pixmap (gs, page, scale);
1224         setup_page (gs, page, scale);
1225
1226         render_page (gs, page);
1227 }
1228
1229 static EvDocumentInfo *
1230 ps_document_get_info (EvDocument *document)
1231 {
1232         EvDocumentInfo *info;
1233         PSDocument *ps = PS_DOCUMENT (document);
1234
1235         info = g_new0 (EvDocumentInfo, 1);
1236         info->fields_mask = EV_DOCUMENT_INFO_TITLE |
1237                             EV_DOCUMENT_INFO_N_PAGES;
1238         info->title = g_strdup (ps->doc->title);
1239         info->n_pages = ev_document_get_n_pages (document);
1240
1241         return info;
1242 }
1243
1244 static EvOrientation
1245 ps_document_get_orientation (EvDocument *document)
1246 {
1247         EvOrientation orientation;
1248         PSDocument *ps = PS_DOCUMENT (document);
1249
1250         g_return_val_if_fail (ps != NULL, EV_ORIENTATION_PORTRAIT);
1251
1252         switch (ps->orientation) {
1253                 case GTK_GS_ORIENTATION_PORTRAIT:
1254                         orientation = EV_ORIENTATION_PORTRAIT;
1255                         break;
1256                 case GTK_GS_ORIENTATION_LANDSCAPE:
1257                         orientation = EV_ORIENTATION_LANDSCAPE;
1258                         break;
1259                 case GTK_GS_ORIENTATION_UPSIDEDOWN:
1260                         orientation = EV_ORIENTATION_UPSIDEDOWN;
1261                         break;
1262                 case GTK_GS_ORIENTATION_SEASCAPE:
1263                         orientation = EV_ORIENTATION_SEASCAPE;
1264                         break;
1265                 default:
1266                         orientation = EV_ORIENTATION_PORTRAIT;
1267                         break;
1268         }
1269
1270         return orientation;
1271 }
1272
1273 static void
1274 ps_document_set_orientation (EvDocument *document, EvOrientation orientation)
1275 {
1276         PSDocument *ps = PS_DOCUMENT (document);
1277
1278         g_return_if_fail (ps != NULL);
1279
1280         switch (orientation) {
1281                 case EV_ORIENTATION_PORTRAIT:
1282                         ps->orientation = GTK_GS_ORIENTATION_PORTRAIT;
1283                         break;
1284                 case EV_ORIENTATION_LANDSCAPE:
1285                         ps->orientation = GTK_GS_ORIENTATION_LANDSCAPE;
1286                         break;
1287                 case EV_ORIENTATION_UPSIDEDOWN:
1288                         ps->orientation = GTK_GS_ORIENTATION_UPSIDEDOWN;
1289                         break;
1290                 case EV_ORIENTATION_SEASCAPE:
1291                         ps->orientation = GTK_GS_ORIENTATION_SEASCAPE;
1292                         break;
1293         }
1294 }
1295
1296 static void
1297 ps_document_document_iface_init (EvDocumentIface *iface)
1298 {
1299         iface->load = ps_document_load;
1300         iface->save = ps_document_save;
1301         iface->can_get_text = ps_document_can_get_text;
1302         iface->get_n_pages = ps_document_get_n_pages;
1303         iface->get_page_size = ps_document_get_page_size;
1304         iface->get_info = ps_document_get_info;
1305         iface->set_orientation = ps_document_set_orientation;
1306         iface->get_orientation = ps_document_get_orientation;
1307 }
1308
1309 static void
1310 ps_async_renderer_iface_init (EvAsyncRendererIface *iface)
1311 {
1312         iface->render_pixbuf = ps_async_renderer_render_pixbuf;
1313 }
1314
1315 static void
1316 ps_document_ps_export_begin (EvPSExporter *exporter, const char *filename,
1317                              int first_page, int last_page)
1318 {
1319         PSDocument *document = PS_DOCUMENT (exporter);
1320
1321         g_free (document->ps_export_pagelist);
1322
1323         document->ps_export_pagelist = g_new0 (int, document->doc->numpages);
1324         document->ps_export_filename = g_strdup (filename);
1325 }
1326
1327 static void
1328 ps_document_ps_export_do_page (EvPSExporter *exporter, int page)
1329 {
1330         PSDocument *document = PS_DOCUMENT (exporter);
1331
1332         document->ps_export_pagelist[page] = 1;
1333 }
1334
1335 static void
1336 ps_document_ps_export_end (EvPSExporter *exporter)
1337 {
1338         PSDocument *document = PS_DOCUMENT (exporter);
1339
1340         save_page_list (document, document->ps_export_pagelist,
1341                         document->ps_export_filename);
1342
1343         g_free (document->ps_export_pagelist);
1344         g_free (document->ps_export_filename);
1345         document->ps_export_pagelist = NULL;
1346         document->ps_export_filename = NULL;
1347 }
1348
1349 static void
1350 ps_document_ps_exporter_iface_init (EvPSExporterIface *iface)
1351 {
1352         iface->begin = ps_document_ps_export_begin;
1353         iface->do_page = ps_document_ps_export_do_page;
1354         iface->end = ps_document_ps_export_end;
1355 }