1 /* GTK - The GIMP Toolkit
2 * gtkprintbackendpdf.c: Default implementation of GtkPrintBackend
3 * for printing to a file
4 * Copyright (C) 2003, Red Hat, Inc.
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the
18 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 * Boston, MA 02111-1307, USA.
25 #include <sys/types.h>
33 #include <cairo-pdf.h>
36 #include <glib/gi18n-lib.h>
38 #include "gtkprintoperation.h"
40 #include "gtkprintbackend.h"
41 #include "gtkprintbackendfile.h"
43 #include "gtkprinter.h"
44 #include "gtkprinter-private.h"
46 typedef struct _GtkPrintBackendFileClass GtkPrintBackendFileClass;
48 #define GTK_PRINT_BACKEND_FILE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_PRINT_BACKEND_FILE, GtkPrintBackendFileClass))
49 #define GTK_IS_PRINT_BACKEND_FILE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_PRINT_BACKEND_FILE))
50 #define GTK_PRINT_BACKEND_FILE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_PRINT_BACKEND_FILE, GtkPrintBackendFileClass))
52 #define _STREAM_MAX_CHUNK_SIZE 8192
54 static GType print_backend_file_type = 0;
56 struct _GtkPrintBackendFileClass
58 GtkPrintBackendClass parent_class;
61 struct _GtkPrintBackendFile
63 GtkPrintBackend parent_instance;
73 static const gchar* formats[N_FORMATS] =
79 static GObjectClass *backend_parent_class;
81 static void gtk_print_backend_file_class_init (GtkPrintBackendFileClass *class);
82 static void gtk_print_backend_file_init (GtkPrintBackendFile *impl);
83 static void file_printer_get_settings_from_options (GtkPrinter *printer,
84 GtkPrinterOptionSet *options,
85 GtkPrintSettings *settings);
86 static GtkPrinterOptionSet *file_printer_get_options (GtkPrinter *printer,
87 GtkPrintSettings *settings,
88 GtkPageSetup *page_setup,
89 GtkPrintCapabilities capabilities);
90 static void file_printer_prepare_for_print (GtkPrinter *printer,
91 GtkPrintJob *print_job,
92 GtkPrintSettings *settings,
93 GtkPageSetup *page_setup);
94 static void gtk_print_backend_file_print_stream (GtkPrintBackend *print_backend,
97 GtkPrintJobCompleteFunc callback,
99 GDestroyNotify dnotify);
100 static cairo_surface_t * file_printer_create_cairo_surface (GtkPrinter *printer,
101 GtkPrintSettings *settings,
104 GIOChannel *cache_io);
106 static GList * file_printer_list_papers (GtkPrinter *printer);
109 gtk_print_backend_file_register_type (GTypeModule *module)
111 static const GTypeInfo print_backend_file_info =
113 sizeof (GtkPrintBackendFileClass),
114 NULL, /* base_init */
115 NULL, /* base_finalize */
116 (GClassInitFunc) gtk_print_backend_file_class_init,
117 NULL, /* class_finalize */
118 NULL, /* class_data */
119 sizeof (GtkPrintBackendFile),
121 (GInstanceInitFunc) gtk_print_backend_file_init,
124 print_backend_file_type = g_type_module_register_type (module,
125 GTK_TYPE_PRINT_BACKEND,
126 "GtkPrintBackendFile",
127 &print_backend_file_info, 0);
131 pb_module_init (GTypeModule *module)
133 gtk_print_backend_file_register_type (module);
137 pb_module_exit (void)
142 G_MODULE_EXPORT GtkPrintBackend *
143 pb_module_create (void)
145 return gtk_print_backend_file_new ();
149 * GtkPrintBackendFile
152 gtk_print_backend_file_get_type (void)
154 return print_backend_file_type;
158 * gtk_print_backend_file_new:
160 * Creates a new #GtkPrintBackendFile object. #GtkPrintBackendFile
161 * implements the #GtkPrintBackend interface with direct access to
162 * the filesystem using Unix/Linux API calls
164 * Return value: the new #GtkPrintBackendFile object
167 gtk_print_backend_file_new (void)
169 return g_object_new (GTK_TYPE_PRINT_BACKEND_FILE, NULL);
173 gtk_print_backend_file_class_init (GtkPrintBackendFileClass *class)
175 GtkPrintBackendClass *backend_class = GTK_PRINT_BACKEND_CLASS (class);
177 backend_parent_class = g_type_class_peek_parent (class);
179 backend_class->print_stream = gtk_print_backend_file_print_stream;
180 backend_class->printer_create_cairo_surface = file_printer_create_cairo_surface;
181 backend_class->printer_get_options = file_printer_get_options;
182 backend_class->printer_get_settings_from_options = file_printer_get_settings_from_options;
183 backend_class->printer_prepare_for_print = file_printer_prepare_for_print;
184 backend_class->printer_list_papers = file_printer_list_papers;
187 /* return N_FORMATS if no explicit format in the settings */
189 format_from_settings (GtkPrintSettings *settings)
194 if (settings == NULL)
197 value = gtk_print_settings_get (settings,
198 GTK_PRINT_SETTINGS_OUTPUT_FILE_FORMAT);
202 for (i = 0; i < N_FORMATS; ++i)
203 if (strcmp (value, formats[i]) == 0)
206 g_assert (i < N_FORMATS);
208 return (OutputFormat) i;
212 output_file_from_settings (GtkPrintSettings *settings,
213 const gchar *default_format)
218 uri = g_strdup (gtk_print_settings_get (settings, GTK_PRINT_SETTINGS_OUTPUT_URI));
222 const gchar *extension;
223 gchar *name, *locale_name, *path;
226 extension = default_format;
231 format = format_from_settings (settings);
232 extension = format == FORMAT_PS ? "ps" : "pdf";
235 /* default filename used for print-to-file */
236 name = g_strdup_printf (_("output.%s"), extension);
237 locale_name = g_filename_from_utf8 (name, -1, NULL, NULL, NULL);
240 if (locale_name != NULL)
242 path = g_build_filename (g_get_current_dir (), locale_name, NULL);
243 g_free (locale_name);
245 uri = g_filename_to_uri (path, NULL, NULL);
253 static cairo_status_t
254 _cairo_write (void *closure,
255 const unsigned char *data,
258 GIOChannel *io = (GIOChannel *)closure;
265 g_print ("FILE Backend: Writting %i byte chunk to temp file\n", length));
269 g_io_channel_write_chars (io, (const gchar *) data, length, &written, &error);
274 g_print ("FILE Backend: Error writting to temp file, %s\n", error->message));
276 g_error_free (error);
277 return CAIRO_STATUS_WRITE_ERROR;
281 g_print ("FILE Backend: Wrote %i bytes to temp file\n", written));
287 return CAIRO_STATUS_SUCCESS;
291 static cairo_surface_t *
292 file_printer_create_cairo_surface (GtkPrinter *printer,
293 GtkPrintSettings *settings,
296 GIOChannel *cache_io)
298 cairo_surface_t *surface;
301 format = format_from_settings (settings);
303 if (format == FORMAT_PS)
304 surface = cairo_ps_surface_create_for_stream (_cairo_write, cache_io, width, height);
306 surface = cairo_pdf_surface_create_for_stream (_cairo_write, cache_io, width, height);
308 /* TODO: DPI from settings object? */
309 cairo_surface_set_fallback_resolution (surface, 300, 300);
315 GtkPrintBackend *backend;
316 GtkPrintJobCompleteFunc callback;
318 GIOChannel *target_io;
320 GDestroyNotify dnotify;
324 file_print_cb (GtkPrintBackendFile *print_backend,
328 _PrintStreamData *ps = (_PrintStreamData *) user_data;
330 GDK_THREADS_ENTER ();
332 if (ps->target_io != NULL)
333 g_io_channel_unref (ps->target_io);
336 ps->callback (ps->job, ps->user_data, error);
339 ps->dnotify (ps->user_data);
341 gtk_print_job_set_status (ps->job,
342 (error != NULL)?GTK_PRINT_STATUS_FINISHED_ABORTED:GTK_PRINT_STATUS_FINISHED);
345 g_object_unref (ps->job);
349 GDK_THREADS_LEAVE ();
353 file_write (GIOChannel *source,
357 gchar buf[_STREAM_MAX_CHUNK_SIZE];
360 GIOStatus read_status;
361 _PrintStreamData *ps = (_PrintStreamData *) user_data;
366 g_io_channel_read_chars (source,
368 _STREAM_MAX_CHUNK_SIZE,
372 if (read_status != G_IO_STATUS_ERROR)
376 g_io_channel_write_chars (ps->target_io,
383 if (error != NULL || read_status == G_IO_STATUS_EOF)
385 file_print_cb (GTK_PRINT_BACKEND_FILE (ps->backend), error, user_data);
390 g_print ("FILE Backend: %s\n", error->message));
392 g_error_free (error);
399 g_print ("FILE Backend: Writting %i byte chunk to target file\n", bytes_read));
405 gtk_print_backend_file_print_stream (GtkPrintBackend *print_backend,
408 GtkPrintJobCompleteFunc callback,
410 GDestroyNotify dnotify)
412 GError *internal_error = NULL;
414 _PrintStreamData *ps;
415 GtkPrintSettings *settings;
416 gchar *uri, *filename;
418 printer = gtk_print_job_get_printer (job);
419 settings = gtk_print_job_get_settings (job);
421 ps = g_new0 (_PrintStreamData, 1);
422 ps->callback = callback;
423 ps->user_data = user_data;
424 ps->dnotify = dnotify;
425 ps->job = g_object_ref (job);
426 ps->backend = print_backend;
428 internal_error = NULL;
429 uri = output_file_from_settings (settings, NULL);
430 filename = g_filename_from_uri (uri, NULL, &internal_error);
433 if (filename == NULL)
436 ps->target_io = g_io_channel_new_file (filename, "w", &internal_error);
440 if (internal_error == NULL)
441 g_io_channel_set_encoding (ps->target_io, NULL, &internal_error);
444 if (internal_error != NULL)
446 file_print_cb (GTK_PRINT_BACKEND_FILE (print_backend),
449 g_error_free (internal_error);
453 g_io_add_watch (data_io,
454 G_IO_IN | G_IO_PRI | G_IO_ERR | G_IO_HUP,
455 (GIOFunc) file_write,
460 gtk_print_backend_file_init (GtkPrintBackendFile *backend)
464 printer = g_object_new (GTK_TYPE_PRINTER,
465 "name", _("Print to File"),
470 gtk_printer_set_has_details (printer, TRUE);
471 gtk_printer_set_icon_name (printer, "gtk-floppy");
472 gtk_printer_set_is_active (printer, TRUE);
474 gtk_print_backend_add_printer (GTK_PRINT_BACKEND (backend), printer);
475 g_object_unref (printer);
477 gtk_print_backend_set_list_done (GTK_PRINT_BACKEND (backend));
481 file_printer_output_file_format_changed (GtkPrinterOption *format_option,
482 GtkPrinterOptionSet *set)
484 GtkPrinterOption *uri_option;
487 if (! format_option->value)
490 uri_option = gtk_printer_option_set_lookup (set,
491 "gtk-main-page-custom-input");
493 if (uri_option && uri_option->value)
495 const gchar *uri = uri_option->value;
496 const gchar *dot = strrchr (uri, '.');
502 /* check if the file extension matches one of the known ones */
503 for (i = 0; i < N_FORMATS; i++)
504 if (strcmp (dot + 1, formats[i]) == 0)
507 if (i < N_FORMATS && strcmp (formats[i], format_option->value))
509 /* the file extension is known but doesn't match the
510 * selected one, strip it away
512 base = g_strndup (uri, dot - uri);
517 /* there's no file extension */
518 base = g_strdup (uri);
524 gchar *tmp = g_strdup_printf ("%s.%s", base, format_option->value);
526 gtk_printer_option_set (uri_option, tmp);
532 static GtkPrinterOptionSet *
533 file_printer_get_options (GtkPrinter *printer,
534 GtkPrintSettings *settings,
535 GtkPageSetup *page_setup,
536 GtkPrintCapabilities capabilities)
538 GtkPrinterOptionSet *set;
539 GtkPrinterOption *option;
540 const gchar *n_up[] = {"1", "2", "4", "6", "9", "16" };
541 const gchar *pages_per_sheet = NULL;
542 const gchar *format_names[N_FORMATS] = { N_("PDF"), N_("Postscript") };
543 const gchar *supported_formats[N_FORMATS];
544 gchar *display_format_names[N_FORMATS];
548 gint current_format = 0;
550 format = format_from_settings (settings);
552 set = gtk_printer_option_set_new ();
554 option = gtk_printer_option_new ("gtk-n-up", _("Pages per _sheet:"), GTK_PRINTER_OPTION_TYPE_PICKONE);
555 gtk_printer_option_choices_from_array (option, G_N_ELEMENTS (n_up),
556 (char **) n_up, (char **) n_up /* FIXME i18n (localised digits)! */);
558 pages_per_sheet = gtk_print_settings_get (settings, GTK_PRINT_SETTINGS_NUMBER_UP);
560 gtk_printer_option_set (option, pages_per_sheet);
562 gtk_printer_option_set (option, "1");
563 gtk_printer_option_set_add (set, option);
564 g_object_unref (option);
566 if (capabilities & (GTK_PRINT_CAPABILITY_GENERATE_PDF | GTK_PRINT_CAPABILITY_GENERATE_PS))
568 if (capabilities & GTK_PRINT_CAPABILITY_GENERATE_PDF)
570 if (format == FORMAT_PDF || format == N_FORMATS)
573 current_format = n_formats;
575 supported_formats[n_formats] = formats[FORMAT_PDF];
576 display_format_names[n_formats] = _(format_names[FORMAT_PDF]);
579 if (capabilities & GTK_PRINT_CAPABILITY_GENERATE_PS)
581 if (format == FORMAT_PS || format == N_FORMATS)
582 current_format = n_formats;
583 supported_formats[n_formats] = formats[FORMAT_PS];
584 display_format_names[n_formats] = _(format_names[FORMAT_PS]);
590 current_format = format == FORMAT_PS ? FORMAT_PS : FORMAT_PDF;
591 for (n_formats = 0; n_formats < N_FORMATS; ++n_formats)
593 supported_formats[n_formats] = formats[n_formats];
594 display_format_names[n_formats] = _(format_names[n_formats]);
598 uri = output_file_from_settings (settings, supported_formats[current_format]);
600 option = gtk_printer_option_new ("gtk-main-page-custom-input", _("File"),
601 GTK_PRINTER_OPTION_TYPE_FILESAVE);
602 gtk_printer_option_set (option, uri);
604 option->group = g_strdup ("GtkPrintDialogExtension");
605 gtk_printer_option_set_add (set, option);
609 option = gtk_printer_option_new ("output-file-format", _("_Output format"),
610 GTK_PRINTER_OPTION_TYPE_ALTERNATIVE);
611 option->group = g_strdup ("GtkPrintDialogExtension");
613 gtk_printer_option_choices_from_array (option, n_formats,
614 (char **) supported_formats,
615 display_format_names);
616 gtk_printer_option_set (option, supported_formats[current_format]);
617 gtk_printer_option_set_add (set, option);
619 g_signal_connect (option, "changed",
620 G_CALLBACK (file_printer_output_file_format_changed),
623 g_object_unref (option);
630 file_printer_get_settings_from_options (GtkPrinter *printer,
631 GtkPrinterOptionSet *options,
632 GtkPrintSettings *settings)
634 GtkPrinterOption *option;
636 option = gtk_printer_option_set_lookup (options, "gtk-main-page-custom-input");
637 gtk_print_settings_set (settings, GTK_PRINT_SETTINGS_OUTPUT_URI, option->value);
639 option = gtk_printer_option_set_lookup (options, "output-file-format");
641 gtk_print_settings_set (settings, GTK_PRINT_SETTINGS_OUTPUT_FILE_FORMAT, option->value);
643 option = gtk_printer_option_set_lookup (options, "gtk-n-up");
645 gtk_print_settings_set (settings, GTK_PRINT_SETTINGS_NUMBER_UP, option->value);
649 file_printer_prepare_for_print (GtkPrinter *printer,
650 GtkPrintJob *print_job,
651 GtkPrintSettings *settings,
652 GtkPageSetup *page_setup)
656 print_job->print_pages = gtk_print_settings_get_print_pages (settings);
657 print_job->page_ranges = NULL;
658 print_job->num_page_ranges = 0;
660 if (print_job->print_pages == GTK_PRINT_PAGES_RANGES)
661 print_job->page_ranges =
662 gtk_print_settings_get_page_ranges (settings,
663 &print_job->num_page_ranges);
665 print_job->collate = gtk_print_settings_get_collate (settings);
666 print_job->reverse = gtk_print_settings_get_reverse (settings);
667 print_job->num_copies = gtk_print_settings_get_n_copies (settings);
669 scale = gtk_print_settings_get_scale (settings);
671 print_job->scale = scale/100.0;
673 print_job->page_set = gtk_print_settings_get_page_set (settings);
674 print_job->rotate_to_orientation = TRUE;
678 file_printer_list_papers (GtkPrinter *printer)
680 GList *result = NULL;
682 GtkPageSetup *page_setup;
684 papers = gtk_paper_size_get_paper_sizes (TRUE);
686 for (p = papers; p; p = p->next)
688 GtkPaperSize *paper_size = p->data;
690 page_setup = gtk_page_setup_new ();
691 gtk_page_setup_set_paper_size (page_setup, paper_size);
692 gtk_paper_size_free (paper_size);
693 result = g_list_prepend (result, page_setup);
696 g_list_free (papers);
698 return g_list_reverse (result);