properties/ev-properties-view.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
   2 /* this file is part of evince, a gnome document viewer
   3  *
   4  *  Copyright (C) 2005 Red Hat, Inc
   5  *
   6  * Evince is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * Evince is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  19  */
  20
  21 #ifdef HAVE_CONFIG_H
  22 #include "config.h"
  23 #endif
  24
  25 #include "ev-properties-view.h"
  26 #include "ev-document-fonts.h"
  27
  28 #include <glib/gi18n.h>
  29 #include <gtk/gtk.h>
  30 #include <glade/glade.h>
  31 #include <time.h>
  32 #include <sys/time.h>
  33 #include <string.h>
  34
  35 #ifdef HAVE__NL_MEASUREMENT_MEASUREMENT
  36 #include <langinfo.h>
  37 #endif
  38
  39 typedef enum
  40 {
  41         TITLE_PROPERTY,
  42         SUBJECT_PROPERTY,
  43         AUTHOR_PROPERTY,
  44         KEYWORDS_PROPERTY,
  45         PRODUCER_PROPERTY,
  46         CREATOR_PROPERTY,
  47         CREATION_DATE_PROPERTY,
  48         MOD_DATE_PROPERTY,
  49         N_PAGES_PROPERTY,
  50         LINEARIZED_PROPERTY,
  51         FORMAT_PROPERTY,
  52         SECURITY_PROPERTY,
  53         PAPER_SIZE_PROPERTY
  54 } Property;
  55
  56 typedef struct
  57 {
  58         Property property;
  59         const char *label_id;
  60 } PropertyInfo;
  61
  62 static const PropertyInfo properties_info[] = {
  63         { TITLE_PROPERTY, "title" },
  64         { SUBJECT_PROPERTY, "subject" },
  65         { AUTHOR_PROPERTY, "author" },
  66         { KEYWORDS_PROPERTY, "keywords" },
  67         { PRODUCER_PROPERTY, "producer" },
  68         { CREATOR_PROPERTY, "creator" },
  69         { CREATION_DATE_PROPERTY, "created" },
  70         { MOD_DATE_PROPERTY, "modified" },
  71         { N_PAGES_PROPERTY, "pages" },
  72         { LINEARIZED_PROPERTY, "optimized" },
  73         { FORMAT_PROPERTY, "version" },
  74         { SECURITY_PROPERTY, "security" },
  75         { PAPER_SIZE_PROPERTY, "papersize" }
  76 };
  77
  78 struct _EvPropertiesView {
  79         GtkVBox base_instance;
  80
  81         GladeXML *xml;
  82 };
  83
  84 struct _EvPropertiesViewClass {
  85         GtkVBoxClass base_class;
  86 };
  87
  88 G_DEFINE_TYPE (EvPropertiesView, ev_properties_view, GTK_TYPE_VBOX)
  89
  90 static void
  91 ev_properties_view_dispose (GObject *object)
  92 {
  93         EvPropertiesView *properties = EV_PROPERTIES_VIEW (object);
  94
  95         if (properties->xml) {
  96                 g_object_unref (properties->xml);
  97                 properties->xml = NULL;
  98         }
  99
 100         G_OBJECT_CLASS (ev_properties_view_parent_class)->dispose (object);
 101 }
 102
 103 static void
 104 ev_properties_view_class_init (EvPropertiesViewClass *properties_class)
 105 {
 106         GObjectClass *g_object_class = G_OBJECT_CLASS (properties_class);
 107
 108         g_object_class->dispose = ev_properties_view_dispose;
 109 }
 110
 111 /* Returns a locale specific date and time representation */
 112 static char *
 113 ev_properties_view_format_date (GTime utime)
 114 {
 115         time_t time = (time_t) utime;
 116         struct tm t;
 117         char s[256];
 118         const char *fmt_hack = "%c";
 119         size_t len;
 120
 121         if (time == 0 || !localtime_r (&time, &t)) return NULL;
 122
 123         len = strftime (s, sizeof (s), fmt_hack, &t);
 124         if (len == 0 || s[0] == '\0') return NULL;
 125
 126         return g_locale_to_utf8 (s, -1, NULL, NULL, NULL);
 127 }
 128
 129 /* This is cut out of gconvert.c from glib (and mildly modified).  Not all
 130    backends give valid UTF-8 for properties, so we make sure that is.
 131  */
 132 static gchar *
 133 make_valid_utf8 (const gchar *name)
 134 {
 135   GString *string;
 136   const gchar *remainder, *invalid;
 137   gint remaining_bytes, valid_bytes;
 138
 139   string = NULL;
 140   remainder = name;
 141   remaining_bytes = strlen (name);
 142
 143   while (remaining_bytes != 0)
 144     {
 145       if (g_utf8_validate (remainder, remaining_bytes, &invalid))
 146         break;
 147       valid_bytes = invalid - remainder;
 148
 149       if (string == NULL)
 150         string = g_string_sized_new (remaining_bytes);
 151
 152       g_string_append_len (string, remainder, valid_bytes);
 153       g_string_append_c (string, '?');
 154
 155       remaining_bytes -= valid_bytes + 1;
 156       remainder = invalid + 1;
 157     }
 158
 159   if (string == NULL)
 160     return g_strdup (name);
 161
 162   g_string_append (string, remainder);
 163
 164   g_assert (g_utf8_validate (string->str, -1, NULL));
 165
 166   return g_string_free (string, FALSE);
 167 }
 168
 169 static void
 170 set_property (GladeXML *xml, Property property, const char *text)
 171 {
 172         GtkWidget *widget;
 173         char *valid_text;
 174
 175         widget = glade_xml_get_widget (xml, properties_info[property].label_id);
 176         g_return_if_fail (GTK_IS_LABEL (widget));
 177
 178         if (text == NULL || text[0] == '\000') {
 179                 gchar *markup;
 180
 181                 markup = g_markup_printf_escaped ("<i>%s</i>", _("None"));
 182                 gtk_label_set_markup (GTK_LABEL (widget), markup);
 183                 g_free (markup);
 184
 185                 return;
 186         }
 187         text = text ? text : "";
 188
 189         valid_text = make_valid_utf8 (text);
 190
 191         gtk_label_set_text (GTK_LABEL (widget), valid_text);
 192
 193         g_free (valid_text);
 194 }
 195
 196 #if HAVE_GTK_PAPER_SIZE_GET_PAPER_SIZES
 197 static GtkUnit
 198 get_default_user_units (void)
 199 {
 200         /* Translate to the default units to use for presenting
 201          * lengths to the user. Translate to default:inch if you
 202          * want inches, otherwise translate to default:mm.
 203          * Do *not* translate it to "predefinito:mm", if it
 204          * it isn't default:mm or default:inch it will not work
 205          */
 206         gchar *e = _("default:mm");
 207
 208 #ifdef HAVE__NL_MEASUREMENT_MEASUREMENT
 209         gchar *imperial = NULL;
 210
 211         imperial = nl_langinfo (_NL_MEASUREMENT_MEASUREMENT);
 212         if (imperial && imperial[0] == 2)
 213                 return GTK_UNIT_INCH;  /* imperial */
 214         if (imperial && imperial[0] == 1)
 215                 return GTK_UNIT_MM;  /* metric */
 216 #endif
 217
 218         if (strcmp (e, "default:inch") == 0)
 219                 return GTK_UNIT_INCH;
 220         else if (strcmp (e, "default:mm") == 0)
 221                 g_warning ("Whoever translated default:mm did so wrongly.\n");
 222
 223         return GTK_UNIT_MM;
 224 }
 225
 226 static gdouble
 227 get_tolerance (gdouble size)
 228 {
 229         if (size < 150.0f)
 230                 return 1.5f;
 231         else if (size >= 150.0f && size <= 600.0f)
 232                 return 2.0f;
 233         else
 234                 return 3.0f;
 235 }
 236
 237 static char *
 238 ev_regular_paper_size (const EvDocumentInfo *info)
 239 {
 240         GList *paper_sizes, *l;
 241         gchar *exact_size;
 242         gchar *str = NULL;
 243         GtkUnit units;
 244
 245         units = get_default_user_units ();
 246
 247         if (units == GTK_UNIT_MM) {
 248                 exact_size = g_strdup_printf(_("%.0f x %.0f mm"),
 249                                              info->paper_width,
 250                                              info->paper_height);
 251         } else {
 252                 exact_size = g_strdup_printf (_("%.2f x %.2f inch"),
 253                                               info->paper_width  / 25.4f,
 254                                               info->paper_height / 25.4f);
 255         }
 256
 257         paper_sizes = gtk_paper_size_get_paper_sizes (FALSE);
 258
 259         for (l = paper_sizes; l && l->data; l = g_list_next (l)) {
 260                 GtkPaperSize *size = (GtkPaperSize *) l->data;
 261                 gdouble paper_width;
 262                 gdouble paper_height;
 263                 gdouble width_tolerance;
 264                 gdouble height_tolerance;
 265
 266                 paper_width = gtk_paper_size_get_width (size, GTK_UNIT_MM);
 267                 paper_height = gtk_paper_size_get_height (size, GTK_UNIT_MM);
 268
 269                 width_tolerance = get_tolerance (paper_width);
 270                 height_tolerance = get_tolerance (paper_height);
 271
 272                 if (ABS (info->paper_height - paper_height) <= height_tolerance &&
 273                     ABS (info->paper_width  - paper_width) <= width_tolerance) {
 274                         /* Note to translators: first placeholder is the paper name (eg.
 275                          * A4), second placeholder is the paper size (eg. 297x210 mm) */
 276                         str = g_strdup_printf (_("%s, Portrait (%s)"),
 277                                                gtk_paper_size_get_display_name (size),
 278                                                exact_size);
 279                 } else if (ABS (info->paper_width  - paper_height) <= height_tolerance &&
 280                            ABS (info->paper_height - paper_width) <= width_tolerance) {
 281                         /* Note to translators: first placeholder is the paper name (eg.
 282                          * A4), second placeholder is the paper size (eg. 297x210 mm) */
 283                         str = g_strdup_printf ( _("%s, Landscape (%s)"),
 284                                                 gtk_paper_size_get_display_name (size),
 285                                                 exact_size);
 286                 }
 287         }
 288
 289         g_list_foreach (paper_sizes, (GFunc) gtk_paper_size_free, NULL);
 290         g_list_free (paper_sizes);
 291
 292         if (str != NULL) {
 293                 g_free (exact_size);
 294                 return str;
 295         }
 296
 297         return exact_size;
 298 }
 299 #else
 300 /*
 301  * All values are in mm.
 302  * Source: http://en.wikipedia.org/wiki/Paper_size
 303  */
 304 struct regular_paper_size {
 305         double width;
 306         double height;
 307         double width_tolerance;
 308         double height_tolerance;
 309         const char *description;
 310 } const regular_paper_sizes[] = {
 311         // ISO 216 paper sizes
 312         {  841.0f, 1189.0f, 3.0f, 3.0f, "A0"  },
 313         {  594.0f,  841.0f, 2.0f, 3.0f, "A1"  },
 314         {  420.0f,  594.0f, 2.0f, 2.0f, "A2"  },
 315         {  297.0f,  420.0f, 2.0f, 2.0f, "A3"  },
 316         {  210.0f,  297.0f, 2.0f, 2.0f, "A4"  },
 317         {  148.0f,  210.0f, 1.5f, 2.0f, "A5"  },
 318         {  105.0f,  148.0f, 1.5f, 1.5f, "A6"  },
 319         {   74.0f,  105.0f, 1.5f, 1.5f, "A7"  },
 320         {   52.0f,   74.0f, 1.5f, 1.5f, "A8"  },
 321         {   37.0f,   52.0f, 1.5f, 1.5f, "A9"  },
 322         {   26.0f,   37.0f, 1.5f, 1.5f, "A10" },
 323         { 1000.0f, 1414.0f, 3.0f, 3.0f, "B0"  },
 324         {  707.0f, 1000.0f, 3.0f, 3.0f, "B1"  },
 325         {  500.0f,  707.0f, 2.0f, 3.0f, "B2"  },
 326         {  353.0f,  500.0f, 2.0f, 2.0f, "B3"  },
 327         {  250.0f,  353.0f, 2.0f, 2.0f, "B4"  },
 328         {  176.0f,  250.0f, 2.0f, 2.0f, "B5"  },
 329         {  125.0f,  176.0f, 1.5f, 2.0f, "B6"  },
 330         {   88.0f,  125.0f, 1.5f, 1.5f, "B7"  },
 331         {   62.0f,   88.0f, 1.5f, 1.5f, "B8"  },
 332         {   44.0f,   62.0f, 1.5f, 1.5f, "B9"  },
 333         {   31.0f,   44.0f, 1.5f, 1.5f, "B10" },
 334         {  917.0f, 1297.0f, 3.0f, 3.0f, "C0"  },
 335         {  648.0f,  917.0f, 3.0f, 3.0f, "C1"  },
 336         {  458.0f,  648.0f, 2.0f, 3.0f, "C2"  },
 337         {  324.0f,  458.0f, 2.0f, 2.0f, "C3"  },
 338         {  229.0f,  324.0f, 2.0f, 2.0f, "C4"  },
 339         {  162.0f,  229.0f, 2.0f, 2.0f, "C5"  },
 340         {  114.0f,  162.0f, 1.5f, 2.0f, "C6"  },
 341         {   81.0f,  114.0f, 1.5f, 1.5f, "C7"  },
 342         {   57.0f,   81.0f, 1.5f, 1.5f, "C8"  },
 343         {   40.0f,   57.0f, 1.5f, 1.5f, "C9"  },
 344         {   28.0f,   40.0f, 1.5f, 1.5f, "C10" },
 345
 346         // US paper sizes
 347         {  279.0f,  216.0f, 3.0f, 3.0f, "Letter" },
 348         {  356.0f,  216.0f, 3.0f, 3.0f, "Legal"  },
 349         {  432.0f,  279.0f, 3.0f, 3.0f, "Ledger" }
 350 };
 351
 352 typedef enum {
 353   EV_UNIT_INCH,
 354   EV_UNIT_MM
 355 } EvUnit;
 356
 357 static EvUnit
 358 ev_get_default_user_units (void)
 359 {
 360   /* Translate to the default units to use for presenting
 361    * lengths to the user. Translate to default:inch if you
 362    * want inches, otherwise translate to default:mm.
 363    * Do *not* translate it to "predefinito:mm", if it
 364    * it isn't default:mm or default:inch it will not work
 365    */
 366   gchar *e = _("default:mm");
 367
 368 #ifdef HAVE__NL_MEASUREMENT_MEASUREMENT
 369   gchar *imperial = NULL;
 370
 371   imperial = nl_langinfo (_NL_MEASUREMENT_MEASUREMENT);
 372   if (imperial && imperial[0] == 2 )
 373     return EV_UNIT_INCH;  /* imperial */
 374   if (imperial && imperial[0] == 1 )
 375     return EV_UNIT_MM;  /* metric */
 376 #endif
 377
 378   if (strcmp (e, "default:inch")==0)
 379     return EV_UNIT_INCH;
 380   else if (strcmp (e, "default:mm"))
 381     g_warning ("Whoever translated default:mm did so wrongly.\n");
 382   return EV_UNIT_MM;
 383 }
 384
 385 static char *
 386 ev_regular_paper_size (const EvDocumentInfo *info)
 387 {
 388         const struct regular_paper_size *size;
 389         EvUnit unit;
 390         char *exact_size = NULL;
 391         char *str = NULL;
 392         int i;
 393
 394         unit = ev_get_default_user_units ();
 395
 396         if (unit == EV_UNIT_INCH)
 397                 /* Imperial measurement (inches) */
 398                 exact_size = g_strdup_printf( _("%.2f x %.2f in"),
 399                                               info->paper_width  / 25.4f,
 400                                               info->paper_height / 25.4f );
 401         else
 402                 /* Metric measurement (millimeters) */
 403                 exact_size = g_strdup_printf( _("%.0f x %.0f mm"),
 404                                               info->paper_width,
 405                                               info->paper_height );
 406
 407         for (i = G_N_ELEMENTS ( regular_paper_sizes ) - 1; i >= 0; i--) {
 408                 size = &regular_paper_sizes[i];
 409
 410                 if ( ABS( info->paper_height - size->height ) <= size->height_tolerance &&
 411                      ABS( info->paper_width  - size->width  ) <= size->width_tolerance ) {
 412                         /* Note to translators: first placeholder is the paper name (eg.
 413                          * A4), second placeholder is the paper size (eg. 297x210 mm) */
 414                         str = g_strdup_printf ( _("%s, Portrait (%s)"),
 415                                                 size->description,
 416                                                 exact_size );
 417                 } else if ( ABS( info->paper_width  - size->height ) <= size->height_tolerance &&
 418                             ABS( info->paper_height - size->width  ) <= size->width_tolerance ) {
 419                         /* Note to translators: first placeholder is the paper name (eg.
 420                          * A4), second placeholder is the paper size (eg. 297x210 mm) */
 421                         str = g_strdup_printf ( _("%s, Landscape (%s)"),
 422                                                 size->description,
 423                                                 exact_size );
 424                 }
 425         }
 426
 427         if (str != NULL) {
 428                 g_free (exact_size);
 429                 return str;
 430         } else
 431                 return exact_size;
 432 }
 433 #endif /* HAVE_GTK_PAPER_SIZE_GET_PAPER_SIZES */
 434
 435 void
 436 ev_properties_view_set_info (EvPropertiesView *properties, const EvDocumentInfo *info)
 437 {
 438         GladeXML *xml = properties->xml;
 439         char *text;
 440
 441         if (info->fields_mask & EV_DOCUMENT_INFO_TITLE) {
 442                 set_property (xml, TITLE_PROPERTY, info->title);
 443         }
 444         if (info->fields_mask & EV_DOCUMENT_INFO_SUBJECT) {
 445                 set_property (xml, SUBJECT_PROPERTY, info->subject);
 446         }
 447         if (info->fields_mask & EV_DOCUMENT_INFO_AUTHOR) {
 448                 set_property (xml, AUTHOR_PROPERTY, info->author);
 449         }
 450         if (info->fields_mask & EV_DOCUMENT_INFO_KEYWORDS) {
 451                 set_property (xml, KEYWORDS_PROPERTY, info->keywords);
 452         }
 453         if (info->fields_mask & EV_DOCUMENT_INFO_PRODUCER) {
 454                 set_property (xml, PRODUCER_PROPERTY, info->producer);
 455         }
 456         if (info->fields_mask & EV_DOCUMENT_INFO_CREATOR) {
 457                 set_property (xml, CREATOR_PROPERTY, info->creator);
 458         }
 459         if (info->fields_mask & EV_DOCUMENT_INFO_CREATION_DATE) {
 460                 text = ev_properties_view_format_date (info->creation_date);
 461                 set_property (xml, CREATION_DATE_PROPERTY, text);
 462                 g_free (text);
 463         }
 464         if (info->fields_mask & EV_DOCUMENT_INFO_MOD_DATE) {
 465                 text = ev_properties_view_format_date (info->modified_date);
 466                 set_property (xml, MOD_DATE_PROPERTY, text);
 467                 g_free (text);
 468         }
 469         if (info->fields_mask & EV_DOCUMENT_INFO_FORMAT) {
 470                 text = g_strdup_printf ("%s", info->format);
 471                 set_property (xml, FORMAT_PROPERTY, text);
 472                 g_free (text);
 473         }
 474         if (info->fields_mask & EV_DOCUMENT_INFO_N_PAGES) {
 475                 text = g_strdup_printf ("%d", info->n_pages);
 476                 set_property (xml, N_PAGES_PROPERTY, text);
 477                 g_free (text);
 478         }
 479         if (info->fields_mask & EV_DOCUMENT_INFO_LINEARIZED) {
 480                 set_property (xml, LINEARIZED_PROPERTY, info->linearized);
 481         }
 482         if (info->fields_mask & EV_DOCUMENT_INFO_SECURITY) {
 483                 set_property (xml, SECURITY_PROPERTY, info->security);
 484         }
 485         if (info->fields_mask & EV_DOCUMENT_INFO_PAPER_SIZE) {
 486                 text = ev_regular_paper_size (info);
 487                 set_property (xml, PAPER_SIZE_PROPERTY, text);
 488                 g_free (text);
 489         }
 490 }
 491
 492 static void
 493 ev_properties_view_init (EvPropertiesView *properties)
 494 {
 495         GladeXML *xml;
 496
 497         /* Create a new GladeXML object from XML file glade_file */
 498         xml = glade_xml_new (DATADIR "/evince-properties.glade", "general_page_root", GETTEXT_PACKAGE);
 499         properties->xml = xml;
 500         g_assert (xml != NULL);
 501
 502         gtk_box_pack_start (GTK_BOX (properties),
 503                             glade_xml_get_widget (xml, "general_page_root"),
 504                             TRUE, TRUE, 0);
 505 }
 506
 507 void
 508 ev_properties_view_register_type (GTypeModule *module)
 509 {
 510         ev_properties_view_get_type ();
 511 }
 512
 513 GtkWidget *
 514 ev_properties_view_new (void)
 515 {
 516         EvPropertiesView *properties;
 517
 518         properties = g_object_new (EV_TYPE_PROPERTIES, NULL);
 519
 520         return GTK_WIDGET (properties);
 521 }