src/ui/gui/psppire-output-window.c

   1 /* PSPPIRE - a graphical user interface for PSPP.
   2    Copyright (C) 2008, 2009, 2010  Free Software Foundation
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation, either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
  16
  17 #include <config.h>
  18
  19 #include <gtk/gtksignal.h>
  20 #include <gtk/gtkbox.h>
  21 #include "helper.h"
  22
  23 #include <libpspp/cast.h>
  24 #include <libpspp/message.h>
  25 #include <libpspp/string-map.h>
  26 #include <output/cairo.h>
  27 #include <output/chart-item.h>
  28 #include <output/driver-provider.h>
  29 #include <output/output-item.h>
  30 #include <output/table-item.h>
  31 #include <output/text-item.h>
  32 #include <output/tab.h>
  33 #include <stdlib.h>
  34
  35 #include "about.h"
  36
  37 #include "psppire-output-window.h"
  38
  39
  40 #include "xalloc.h"
  41
  42 #include <sys/types.h>
  43 #include <sys/stat.h>
  44 #include <unistd.h>
  45
  46 #include <gettext.h>
  47 #define _(msgid) gettext (msgid)
  48 #define N_(msgid) msgid
  49
  50 enum
  51   {
  52     COL_TITLE,                  /* Table title. */
  53     COL_Y,                      /* Y position of top of title. */
  54     N_COLS
  55   };
  56
  57 static void psppire_output_window_base_finalize (PsppireOutputWindowClass *, gpointer);
  58 static void psppire_output_window_base_init     (PsppireOutputWindowClass *class);
  59 static void psppire_output_window_class_init    (PsppireOutputWindowClass *class);
  60 static void psppire_output_window_init          (PsppireOutputWindow      *window);
  61
  62
  63 GType
  64 psppire_output_window_get_type (void)
  65 {
  66   static GType psppire_output_window_type = 0;
  67
  68   if (!psppire_output_window_type)
  69     {
  70       static const GTypeInfo psppire_output_window_info =
  71       {
  72         sizeof (PsppireOutputWindowClass),
  73         (GBaseInitFunc) psppire_output_window_base_init,
  74         (GBaseFinalizeFunc) psppire_output_window_base_finalize,
  75         (GClassInitFunc)psppire_output_window_class_init,
  76         (GClassFinalizeFunc) NULL,
  77         NULL,
  78         sizeof (PsppireOutputWindow),
  79         0,
  80         (GInstanceInitFunc) psppire_output_window_init,
  81       };
  82
  83       psppire_output_window_type =
  84         g_type_register_static (PSPPIRE_TYPE_WINDOW, "PsppireOutputWindow",
  85                                 &psppire_output_window_info, 0);
  86     }
  87
  88   return psppire_output_window_type;
  89 }
  90
  91 static GObjectClass *parent_class;
  92
  93 static void
  94 psppire_output_window_finalize (GObject *object)
  95 {
  96   if (G_OBJECT_CLASS (parent_class)->finalize)
  97     (*G_OBJECT_CLASS (parent_class)->finalize) (object);
  98 }
  99
 100
 101 static void
 102 psppire_output_window_dispose (GObject *obj)
 103 {
 104   PsppireOutputWindow *viewer = PSPPIRE_OUTPUT_WINDOW (obj);
 105   size_t i;
 106
 107   for (i = 0; i < viewer->n_items; i++)
 108     output_item_unref (viewer->items[i]);
 109   free (viewer->items);
 110   viewer->items = NULL;
 111   viewer->n_items = viewer->allocated_items = 0;
 112
 113   g_object_unref (viewer->print_settings);
 114
 115   /* Chain up to the parent class */
 116   G_OBJECT_CLASS (parent_class)->dispose (obj);
 117 }
 118
 119 static void
 120 psppire_output_window_class_init (PsppireOutputWindowClass *class)
 121 {
 122   GObjectClass *object_class = G_OBJECT_CLASS (class);
 123
 124   parent_class = g_type_class_peek_parent (class);
 125   object_class->dispose = psppire_output_window_dispose;
 126 }
 127
 128
 129 static void
 130 psppire_output_window_base_init (PsppireOutputWindowClass *class)
 131 {
 132   GObjectClass *object_class = G_OBJECT_CLASS (class);
 133
 134   object_class->finalize = psppire_output_window_finalize;
 135 }
 136
 137
 138
 139 static void
 140 psppire_output_window_base_finalize (PsppireOutputWindowClass *class,
 141                                      gpointer class_data)
 142 {
 143 }
 144 \f
 145 /* Output driver class. */
 146
 147 struct psppire_output_driver
 148   {
 149     struct output_driver driver;
 150     PsppireOutputWindow *viewer;
 151     struct xr_driver *xr;
 152   };
 153
 154 static struct output_driver_class psppire_output_class;
 155
 156 static struct psppire_output_driver *
 157 psppire_output_cast (struct output_driver *driver)
 158 {
 159   assert (driver->class == &psppire_output_class);
 160   return UP_CAST (driver, struct psppire_output_driver, driver);
 161 }
 162
 163 static gboolean
 164 expose_event_callback (GtkWidget *widget, GdkEventExpose *event, gpointer data)
 165 {
 166   struct xr_rendering *r = g_object_get_data (G_OBJECT (widget), "rendering");
 167   cairo_t *cr;
 168
 169   cr = gdk_cairo_create (widget->window);
 170   xr_rendering_draw (r, cr);
 171   cairo_destroy (cr);
 172
 173   return TRUE;
 174 }
 175
 176 static void
 177 psppire_output_submit (struct output_driver *this,
 178                        const struct output_item *item)
 179 {
 180   struct psppire_output_driver *pod = psppire_output_cast (this);
 181   PsppireOutputWindow *viewer;
 182   GtkWidget *drawing_area;
 183   struct xr_rendering *r;
 184   struct string title;
 185   GtkTreeStore *store;
 186   GtkTreePath *path;
 187   GtkTreeIter iter;
 188   cairo_t *cr;
 189   int tw, th;
 190
 191   if (pod->viewer == NULL)
 192     {
 193       pod->viewer = PSPPIRE_OUTPUT_WINDOW (psppire_output_window_new ());
 194       gtk_widget_show_all (GTK_WIDGET (pod->viewer));
 195       pod->viewer->driver = pod;
 196     }
 197   viewer = pod->viewer;
 198
 199   if (viewer->n_items >= viewer->allocated_items)
 200     viewer->items = x2nrealloc (viewer->items, &viewer->allocated_items,
 201                                 sizeof *viewer->items);
 202   viewer->items[viewer->n_items++] = output_item_ref (item);
 203
 204   if (is_text_item (item))
 205     {
 206       const struct text_item *text_item = to_text_item (item);
 207       enum text_item_type type = text_item_get_type (text_item);
 208       const char *text = text_item_get_text (text_item);
 209
 210       if (type == TEXT_ITEM_COMMAND_CLOSE)
 211         {
 212           viewer->in_command = false;
 213           return;
 214         }
 215       else if (text[0] == '\0')
 216         return;
 217     }
 218
 219   cr = gdk_cairo_create (GTK_WIDGET (pod->viewer)->window);
 220   if (pod->xr == NULL)
 221     {
 222       const GtkStyle *style = gtk_widget_get_style (GTK_WIDGET (viewer));
 223       struct string_map options = STRING_MAP_INITIALIZER (options);
 224       PangoFontDescription *font_desc;
 225       char *font_name;
 226
 227       /* Use GTK+ default font as proportional font. */
 228       font_name = pango_font_description_to_string (style->font_desc);
 229       string_map_insert (&options, "prop-font", font_name);
 230       g_free (font_name);
 231
 232       /* Derived emphasized font from proportional font. */
 233       font_desc = pango_font_description_copy (style->font_desc);
 234       pango_font_description_set_style (font_desc, PANGO_STYLE_ITALIC);
 235       font_name = pango_font_description_to_string (font_desc);
 236       string_map_insert (&options, "emph-font", font_name);
 237       g_free (font_name);
 238       pango_font_description_free (font_desc);
 239
 240       /* Pretend that the "page" has a reasonable width and a very big length,
 241          so that most tables can be conveniently viewed on-screen with vertical
 242          scrolling only.  (The length should not be increased very much because
 243          it is already close enough to INT_MAX when expressed as thousands of a
 244          point.) */
 245       string_map_insert (&options, "paper-size", "300x200000mm");
 246       string_map_insert (&options, "headers", "off");
 247       string_map_insert (&options, "left-margin", "0");
 248       string_map_insert (&options, "right-margin", "0");
 249       string_map_insert (&options, "top-margin", "0");
 250       string_map_insert (&options, "bottom-margin", "0");
 251
 252       pod->xr = xr_driver_create (cr, &options);
 253
 254       string_map_destroy (&options);
 255     }
 256
 257   r = xr_rendering_create (pod->xr, item, cr);
 258   if (r == NULL)
 259     goto done;
 260
 261   xr_rendering_measure (r, &tw, &th);
 262
 263   drawing_area = gtk_drawing_area_new ();
 264   gtk_widget_modify_bg (
 265     GTK_WIDGET (drawing_area), GTK_STATE_NORMAL,
 266     &gtk_widget_get_style (drawing_area)->base[GTK_STATE_NORMAL]);
 267   g_object_set_data (G_OBJECT (drawing_area), "rendering", r);
 268   gtk_widget_set_size_request (drawing_area, tw, th);
 269   gtk_layout_put (pod->viewer->output, drawing_area, 0, pod->viewer->y);
 270   gtk_widget_show (drawing_area);
 271   g_signal_connect (G_OBJECT (drawing_area), "expose_event",
 272                      G_CALLBACK (expose_event_callback), NULL);
 273
 274   if (!is_text_item (item)
 275       || text_item_get_type (to_text_item (item)) != TEXT_ITEM_SYNTAX
 276       || !viewer->in_command)
 277     {
 278       store = GTK_TREE_STORE (gtk_tree_view_get_model (viewer->overview));
 279
 280       ds_init_empty (&title);
 281       if (is_text_item (item)
 282           && text_item_get_type (to_text_item (item)) == TEXT_ITEM_COMMAND_OPEN)
 283         {
 284           gtk_tree_store_append (store, &iter, NULL);
 285           viewer->cur_command = iter; /* XXX shouldn't save a GtkTreeIter */
 286           viewer->in_command = true;
 287         }
 288       else
 289         {
 290           GtkTreeIter *p = viewer->in_command ? &viewer->cur_command : NULL;
 291           gtk_tree_store_append (store, &iter, p);
 292         }
 293
 294       ds_clear (&title);
 295       if (is_text_item (item))
 296         ds_put_cstr (&title, text_item_get_text (to_text_item (item)));
 297       else if (is_table_item (item))
 298         {
 299           const char *caption = table_item_get_caption (to_table_item (item));
 300           if (caption != NULL)
 301             ds_put_format (&title, "Table: %s", caption);
 302           else
 303             ds_put_cstr (&title, "Table");
 304         }
 305       else if (is_chart_item (item))
 306         {
 307           const char *s = chart_item_get_title (to_chart_item (item));
 308           if (s != NULL)
 309             ds_put_format (&title, "Chart: %s", s);
 310           else
 311             ds_put_cstr (&title, "Chart");
 312         }
 313       gtk_tree_store_set (store, &iter,
 314                           COL_TITLE, ds_cstr (&title),
 315                           COL_Y, viewer->y,
 316                           -1);
 317       ds_destroy (&title);
 318
 319       path = gtk_tree_model_get_path (GTK_TREE_MODEL (store), &iter);
 320       gtk_tree_view_expand_row (viewer->overview, path, TRUE);
 321       gtk_tree_path_free (path);
 322     }
 323
 324   if (pod->viewer->max_width < tw)
 325     pod->viewer->max_width = tw;
 326   pod->viewer->y += th;
 327
 328   gtk_layout_set_size (pod->viewer->output,
 329                        pod->viewer->max_width, pod->viewer->y);
 330
 331   gtk_window_set_urgency_hint (GTK_WINDOW (pod->viewer), TRUE);
 332
 333 done:
 334   cairo_destroy (cr);
 335 }
 336
 337 static struct output_driver_class psppire_output_class =
 338   {
 339     "PSPPIRE",                  /* name */
 340     NULL,                       /* destroy */
 341     psppire_output_submit,      /* submit */
 342     NULL,                       /* flush */
 343   };
 344
 345 void
 346 psppire_output_window_setup (void)
 347 {
 348   struct psppire_output_driver *pod;
 349   struct output_driver *d;
 350
 351   pod = xzalloc (sizeof *pod);
 352   d = &pod->driver;
 353   output_driver_init (d, &psppire_output_class, "PSPPIRE",
 354                       SETTINGS_DEVICE_UNFILTERED);
 355   output_driver_register (d);
 356 }
 357 \f
 358 int viewer_length = 16;
 359 int viewer_width = 59;
 360
 361 /* Callback for the "delete" action (clicking the x on the top right
 362    hand corner of the window) */
 363 static gboolean
 364 on_delete (GtkWidget *w, GdkEvent *event, gpointer user_data)
 365 {
 366   PsppireOutputWindow *ow = PSPPIRE_OUTPUT_WINDOW (user_data);
 367
 368   gtk_widget_destroy (GTK_WIDGET (ow));
 369
 370   ow->driver->viewer = NULL;
 371
 372   return FALSE;
 373 }
 374
 375
 376
 377 static void
 378 cancel_urgency (GtkWindow *window,  gpointer data)
 379 {
 380   gtk_window_set_urgency_hint (window, FALSE);
 381 }
 382
 383 static void
 384 on_row_activate (GtkTreeView *overview,
 385                  GtkTreePath *path,
 386                  GtkTreeViewColumn *column,
 387                  PsppireOutputWindow *window)
 388 {
 389   GtkTreeModel *model;
 390   GtkTreeIter iter;
 391   GtkAdjustment *vadj;
 392   GValue value = {0};
 393   double y, min, max;
 394
 395   model = gtk_tree_view_get_model (overview);
 396   if (!gtk_tree_model_get_iter (model, &iter, path))
 397     return;
 398
 399   gtk_tree_model_get_value (model, &iter, COL_Y, &value);
 400   y = g_value_get_long (&value);
 401   g_value_unset (&value);
 402
 403   vadj = gtk_layout_get_vadjustment (window->output);
 404   min = vadj->lower;
 405   max = vadj->upper - vadj->page_size;
 406   if (y < min)
 407     y = min;
 408   else if (y > max)
 409     y = max;
 410   gtk_adjustment_set_value (vadj, y);
 411 }
 412
 413 static void psppire_output_window_print (PsppireOutputWindow *window);
 414
 415
 416 static GtkFileFilter *
 417 add_filter (GtkFileChooser *chooser, const char *name, const char *pattern)
 418 {
 419   GtkFileFilter *filter = gtk_file_filter_new ();
 420   g_object_ref_sink (G_OBJECT (filter));
 421   gtk_file_filter_set_name (filter, name);
 422   gtk_file_filter_add_pattern (filter, pattern);
 423   gtk_file_chooser_add_filter (chooser, filter);
 424   return filter;
 425 }
 426
 427 static void
 428 export_output (PsppireOutputWindow *window, struct string_map *options,
 429                const char *format)
 430 {
 431   struct output_driver *driver;
 432   size_t i;
 433
 434   string_map_insert (options, "format", format);
 435   driver = output_driver_create (options);
 436   if (driver == NULL)
 437     return;
 438
 439   for (i = 0; i < window->n_items; i++)
 440     driver->class->submit (driver, window->items[i]);
 441   output_driver_destroy (driver);
 442 }
 443
 444 static void
 445 psppire_output_window_export (PsppireOutputWindow *window)
 446 {
 447   gint response;
 448
 449   GtkFileFilter *pdf_filter;
 450   GtkFileFilter *html_filter;
 451   GtkFileFilter *odt_filter;
 452   GtkFileFilter *txt_filter;
 453   GtkFileFilter *ps_filter;
 454   GtkFileFilter *csv_filter;
 455   GtkFileChooser *chooser;
 456   GtkWidget *dialog;
 457
 458   dialog = gtk_file_chooser_dialog_new (_("Export Output"),
 459                                         GTK_WINDOW (window),
 460                                         GTK_FILE_CHOOSER_ACTION_SAVE,
 461                                         GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
 462                                         GTK_STOCK_SAVE,   GTK_RESPONSE_ACCEPT,
 463                                         NULL);
 464   chooser = GTK_FILE_CHOOSER (dialog);
 465
 466   pdf_filter = add_filter (chooser, _("PDF Files (*.pdf)"), "*.pdf");
 467   html_filter = add_filter (chooser, _("HTML Files (*.html)"), "*.html");
 468   odt_filter = add_filter (chooser, _("OpenDocument Files (*.odt)"), "*.odt");
 469   txt_filter = add_filter (chooser, _("Text Files (*.txt)"), "*.txt");
 470   ps_filter = add_filter (chooser, _("PostScript Files (*.ps)"), "*.ps");
 471   csv_filter = add_filter (chooser, _("Comma-Separated Value Files (*.csv)"),
 472                            "*.csv");
 473
 474   gtk_file_chooser_set_do_overwrite_confirmation (chooser, TRUE);
 475   gtk_file_chooser_set_filter (chooser, pdf_filter);
 476
 477   response = gtk_dialog_run (GTK_DIALOG (dialog));
 478
 479   if ( response == GTK_RESPONSE_ACCEPT )
 480     {
 481       char *filename = gtk_file_chooser_get_filename (chooser);
 482       GtkFileFilter *filter = gtk_file_chooser_get_filter (chooser);
 483       struct string_map options;
 484
 485       g_return_if_fail (filename);
 486       g_return_if_fail (filter);
 487
 488       string_map_init (&options);
 489       string_map_insert (&options, "output-file", filename);
 490       if (filter == pdf_filter)
 491         {
 492           export_output (window, &options, "pdf");
 493         }
 494       else if (filter == html_filter)
 495         export_output (window, &options, "html");
 496       else if (filter == odt_filter)
 497         export_output (window, &options, "odt");
 498       else if (filter == txt_filter)
 499         {
 500           string_map_insert (&options, "headers", "false");
 501           string_map_insert (&options, "paginate", "false");
 502           string_map_insert (&options, "squeeze", "true");
 503           string_map_insert (&options, "emphasis", "none");
 504           string_map_insert (&options, "charts", "none");
 505           string_map_insert (&options, "top-margin", "0");
 506           string_map_insert (&options, "bottom-margin", "0");
 507           export_output (window, &options, "txt");
 508         }
 509       else if (filter == ps_filter)
 510         export_output (window, &options, "ps");
 511       else if (filter == csv_filter)
 512         export_output (window, &options, "csv");
 513       else
 514         g_return_if_reached ();
 515
 516       free (filename);
 517     }
 518
 519   g_object_unref (G_OBJECT (pdf_filter));
 520   g_object_unref (G_OBJECT (html_filter));
 521   g_object_unref (G_OBJECT (txt_filter));
 522   g_object_unref (G_OBJECT (ps_filter));
 523   g_object_unref (G_OBJECT (csv_filter));
 524
 525   gtk_widget_destroy (dialog);
 526 }
 527
 528 static void
 529 psppire_output_window_init (PsppireOutputWindow *window)
 530 {
 531   GtkTreeViewColumn *column;
 532   GtkCellRenderer *renderer;
 533   GtkBuilder *xml;
 534
 535   xml = builder_new ("output-viewer.ui");
 536
 537   gtk_widget_reparent (get_widget_assert (xml, "vbox1"), GTK_WIDGET (window));
 538
 539   window->output = GTK_LAYOUT (get_widget_assert (xml, "output"));
 540   window->y = 0;
 541
 542   window->overview = GTK_TREE_VIEW (get_widget_assert (xml, "overview"));
 543   gtk_tree_view_set_model (window->overview,
 544                            GTK_TREE_MODEL (gtk_tree_store_new (
 545                                              N_COLS,
 546                                              G_TYPE_STRING, /* COL_TITLE */
 547                                              G_TYPE_LONG))); /* COL_Y */
 548
 549   window->in_command = false;
 550
 551   window->items = NULL;
 552   window->n_items = window->allocated_items = 0;
 553
 554   column = gtk_tree_view_column_new ();
 555   gtk_tree_view_append_column (GTK_TREE_VIEW (window->overview), column);
 556   renderer = gtk_cell_renderer_text_new ();
 557   gtk_tree_view_column_pack_start (column, renderer, TRUE);
 558   gtk_tree_view_column_add_attribute (column, renderer, "text", COL_TITLE);
 559
 560   g_signal_connect (GTK_TREE_VIEW (window->overview),
 561                     "row-activated", G_CALLBACK (on_row_activate), window);
 562
 563   gtk_widget_modify_bg (GTK_WIDGET (window->output), GTK_STATE_NORMAL,
 564                         &gtk_widget_get_style (GTK_WIDGET (window->output))->base[GTK_STATE_NORMAL]);
 565
 566   connect_help (xml);
 567
 568   g_signal_connect (window,
 569                     "focus-in-event",
 570                     G_CALLBACK (cancel_urgency),
 571                     NULL);
 572
 573   g_signal_connect (get_action_assert (xml,"help_about"),
 574                     "activate",
 575                     G_CALLBACK (about_new),
 576                     window);
 577
 578   g_signal_connect (get_action_assert (xml,"help_reference"),
 579                     "activate",
 580                     G_CALLBACK (reference_manual),
 581                     NULL);
 582
 583   g_signal_connect (get_action_assert (xml,"windows_minimise-all"),
 584                     "activate",
 585                     G_CALLBACK (psppire_window_minimise_all),
 586                     NULL);
 587
 588   {
 589     GtkUIManager *uim = GTK_UI_MANAGER (get_object_assert (xml, "uimanager1", GTK_TYPE_UI_MANAGER));
 590
 591     PSPPIRE_WINDOW (window)->menu =
 592       GTK_MENU_SHELL (gtk_ui_manager_get_widget (uim,"/ui/menubar1/windows_menuitem/windows_minimise-all")->parent);
 593   }
 594
 595   g_signal_connect_swapped (get_action_assert (xml, "file_export"), "activate",
 596                             G_CALLBACK (psppire_output_window_export), window);
 597
 598
 599   g_signal_connect_swapped (get_action_assert (xml, "file_print"), "activate",
 600                             G_CALLBACK (psppire_output_window_print), window);
 601
 602   g_object_unref (xml);
 603
 604   g_signal_connect (window, "delete-event",
 605                     G_CALLBACK (on_delete), window);
 606 }
 607
 608
 609 GtkWidget*
 610 psppire_output_window_new (void)
 611 {
 612   return GTK_WIDGET (g_object_new (psppire_output_window_get_type (),
 613                                    "filename", "Output",
 614                                    "description", _("Output Viewer"),
 615                                    NULL));
 616 }
 617
 618
 619 \f
 620 static void
 621 create_xr_print_driver (GtkPrintContext *context, PsppireOutputWindow *window)
 622 {
 623   struct string_map options;
 624
 625   string_map_init (&options);
 626   window->print_xrd =
 627     xr_driver_create (gtk_print_context_get_cairo_context (context), &options);
 628
 629   string_map_destroy (&options);
 630 }
 631
 632 static gboolean
 633 paginate (GtkPrintOperation *operation,
 634           GtkPrintContext   *context,
 635           PsppireOutputWindow *window)
 636 {
 637   g_print ("%s\n", __FUNCTION__);
 638
 639   if ( window->print_item < window->n_items )
 640     {
 641       g_print ("Passing item %d\n", window->print_item);
 642       xr_driver_output_item (window->print_xrd, window->items[window->print_item++]);
 643       bool x = xr_driver_need_new_page (window->print_xrd);
 644       if ( x )
 645         {
 646           g_print ("Need new page: %d\n", x);
 647           xr_driver_next_page (window->print_xrd, NULL);
 648           window->print_n_pages ++;
 649         }
 650       return FALSE;
 651     }
 652   else
 653     {
 654       g_print ("Number of pages is %d\n", window->print_n_pages);
 655       gtk_print_operation_set_n_pages (operation, window->print_n_pages);
 656       window->print_item = 0;
 657
 658       create_xr_print_driver (context, window);
 659
 660       return TRUE;
 661     }
 662 }
 663
 664 static void
 665 begin_print (GtkPrintOperation *operation,
 666              GtkPrintContext   *context,
 667              PsppireOutputWindow *window)
 668 {
 669   g_print ("%s\n", __FUNCTION__);
 670
 671   create_xr_print_driver (context, window);
 672
 673   window->print_item = 0;
 674   window->print_n_pages = 1;
 675 }
 676
 677 static void
 678 end_print (GtkPrintOperation *operation,
 679            GtkPrintContext   *context,
 680            PsppireOutputWindow *window)
 681 {
 682   g_print ("%s\n", __FUNCTION__);
 683   //  xr_driver_destroy (window->print_xrd);
 684 }
 685
 686 static void
 687 done (GtkPrintOperation *operation,
 688       GtkPrintOperationResult   result,
 689       gpointer           user_data)
 690 {
 691   g_print ("%s %d\n", __FUNCTION__, result);
 692 }
 693
 694
 695 static void
 696 draw_page (GtkPrintOperation *operation,
 697            GtkPrintContext   *context,
 698            gint               page_number,
 699            PsppireOutputWindow *window)
 700 {
 701   g_print ("%s: %d\n", __FUNCTION__, page_number);
 702
 703   xr_driver_next_page (window->print_xrd, gtk_print_context_get_cairo_context (context));
 704   while ( window->print_item < window->n_items)
 705     {
 706       xr_driver_output_item (window->print_xrd, window->items [window->print_item++]);
 707       if ( xr_driver_need_new_page (window->print_xrd) )
 708           break;
 709     }
 710 }
 711
 712
 713 static void
 714 psppire_output_window_print (PsppireOutputWindow *window)
 715 {
 716   GtkPrintOperationResult res;
 717
 718   GtkPrintOperation *print = gtk_print_operation_new ();
 719
 720   if (window->print_settings != NULL)
 721     gtk_print_operation_set_print_settings (print, window->print_settings);
 722
 723   g_signal_connect (print, "begin_print", G_CALLBACK (begin_print), window);
 724   g_signal_connect (print, "end_print", G_CALLBACK (end_print),     window);
 725   g_signal_connect (print, "paginate", G_CALLBACK (paginate),       window);
 726   g_signal_connect (print, "draw_page", G_CALLBACK (draw_page),     window);
 727   g_signal_connect (print, "done", G_CALLBACK (done),               window);
 728
 729   res = gtk_print_operation_run (print, GTK_PRINT_OPERATION_ACTION_PRINT_DIALOG,
 730                                  GTK_WINDOW (window), NULL);
 731
 732   if (res == GTK_PRINT_OPERATION_RESULT_APPLY)
 733     {
 734       if (window->print_settings != NULL)
 735         g_object_unref (window->print_settings);
 736       window->print_settings = g_object_ref (gtk_print_operation_get_print_settings (print));
 737
 738     }
 739
 740   g_object_unref (print);
 741 }