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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  19  */
  20
  21 #include "config.h"
  22
  23 #include <string.h>
  24 #include <sys/time.h>
  25 #include <time.h>
  26
  27 #ifdef HAVE__NL_MEASUREMENT_MEASUREMENT
  28 #include <langinfo.h>
  29 #endif
  30
  31 #include <glib/gi18n-lib.h>
  32 #include <gtk/gtk.h>
  33
  34 #include "ev-properties-view.h"
  35
  36 typedef enum {
  37         TITLE_PROPERTY,
  38         URI_PROPERTY,
  39         SUBJECT_PROPERTY,
  40         AUTHOR_PROPERTY,
  41         KEYWORDS_PROPERTY,
  42         PRODUCER_PROPERTY,
  43         CREATOR_PROPERTY,
  44         CREATION_DATE_PROPERTY,
  45         MOD_DATE_PROPERTY,
  46         N_PAGES_PROPERTY,
  47         LINEARIZED_PROPERTY,
  48         FORMAT_PROPERTY,
  49         SECURITY_PROPERTY,
  50         PAPER_SIZE_PROPERTY,
  51         N_PROPERTIES
  52 } Property;
  53
  54 typedef struct {
  55         Property property;
  56         const char *label;
  57 } PropertyInfo;
  58
  59 static const PropertyInfo properties_info[] = {
  60         { TITLE_PROPERTY,         N_("Title:") },
  61         { URI_PROPERTY,           N_("Location:") },
  62         { SUBJECT_PROPERTY,       N_("Subject:") },
  63         { AUTHOR_PROPERTY,        N_("Author:") },
  64         { KEYWORDS_PROPERTY,      N_("Keywords:") },
  65         { PRODUCER_PROPERTY,      N_("Producer:") },
  66         { CREATOR_PROPERTY,       N_("Creator:") },
  67         { CREATION_DATE_PROPERTY, N_("Created:") },
  68         { MOD_DATE_PROPERTY,      N_("Modified:") },
  69         { N_PAGES_PROPERTY,       N_("Number of Pages:") },
  70         { LINEARIZED_PROPERTY,    N_("Optimized:") },
  71         { FORMAT_PROPERTY,        N_("Format:") },
  72         { SECURITY_PROPERTY,      N_("Security:") },
  73         { PAPER_SIZE_PROPERTY,    N_("Paper Size:") }
  74 };
  75
  76 struct _EvPropertiesView {
  77         GtkVBox base_instance;
  78
  79         GtkWidget *table;
  80         GtkWidget *labels[N_PROPERTIES];
  81         gchar     *uri;
  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->uri) {
  96                 g_free (properties->uri);
  97                 properties->uri = 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 /* This is cut out of gconvert.c from glib (and mildly modified).  Not all
 112    backends give valid UTF-8 for properties, so we make sure that is.
 113  */
 114 static gchar *
 115 make_valid_utf8 (const gchar *name)
 116 {
 117   GString *string;
 118   const gchar *remainder, *invalid;
 119   gint remaining_bytes, valid_bytes;
 120
 121   string = NULL;
 122   remainder = name;
 123   remaining_bytes = strlen (name);
 124
 125   while (remaining_bytes != 0)
 126     {
 127       if (g_utf8_validate (remainder, remaining_bytes, &invalid))
 128         break;
 129       valid_bytes = invalid - remainder;
 130
 131       if (string == NULL)
 132         string = g_string_sized_new (remaining_bytes);
 133
 134       g_string_append_len (string, remainder, valid_bytes);
 135       g_string_append_c (string, '?');
 136
 137       remaining_bytes -= valid_bytes + 1;
 138       remainder = invalid + 1;
 139     }
 140
 141   if (string == NULL)
 142     return g_strdup (name);
 143
 144   g_string_append (string, remainder);
 145
 146   g_assert (g_utf8_validate (string->str, -1, NULL));
 147
 148   return g_string_free (string, FALSE);
 149 }
 150
 151 static void
 152 set_property (EvPropertiesView *properties,
 153               GtkTable         *table,
 154               Property          property,
 155               const gchar      *text,
 156               gint             *row)
 157 {
 158         GtkWidget *label;
 159         gchar     *markup;
 160         gchar     *valid_text;
 161
 162         if (!properties->labels[property]) {
 163                 label = gtk_label_new (NULL);
 164                 g_object_set (G_OBJECT (label), "xalign", 0.0, NULL);
 165                 markup = g_strdup_printf ("<b>%s</b>", _(properties_info[property].label));
 166                 gtk_label_set_markup (GTK_LABEL (label), markup);
 167                 g_free (markup);
 168
 169                 gtk_table_attach (table, label, 0, 1, *row, *row + 1,
 170                                   GTK_FILL, GTK_FILL, 0, 0);
 171                 gtk_widget_show (label);
 172         }
 173
 174         if (!properties->labels[property]) {
 175                 label = gtk_label_new (NULL);
 176
 177                 g_object_set (G_OBJECT (label),
 178                               "xalign", 0.0,
 179                               "width_chars", 25,
 180                               "selectable", TRUE,
 181                               "ellipsize", PANGO_ELLIPSIZE_END,
 182                               NULL);
 183         } else {
 184                 label = properties->labels[property];
 185         }
 186
 187         if (text == NULL || text[0] == '\000') {
 188                 markup = g_markup_printf_escaped ("<i>%s</i>", _("None"));
 189                 gtk_label_set_markup (GTK_LABEL (label), markup);
 190                 g_free (markup);
 191         } else {
 192                 valid_text = make_valid_utf8 (text ? text : "");
 193                 gtk_label_set_text (GTK_LABEL (label), valid_text);
 194                 g_free (valid_text);
 195         }
 196
 197         if (!properties->labels[property]) {
 198                 gtk_table_attach (table, label, 1, 2, *row, *row + 1,
 199                                   GTK_FILL | GTK_EXPAND, GTK_FILL, 0, 0);
 200                 properties->labels[property] = label;
 201         }
 202
 203         gtk_widget_show (label);
 204
 205         *row += 1;
 206 }
 207
 208 static GtkUnit
 209 get_default_user_units (void)
 210 {
 211         /* Translate to the default units to use for presenting
 212          * lengths to the user. Translate to default:inch if you
 213          * want inches, otherwise translate to default:mm.
 214          * Do *not* translate it to "predefinito:mm", if it
 215          * it isn't default:mm or default:inch it will not work
 216          */
 217         gchar *e = _("default:mm");
 218
 219 #ifdef HAVE__NL_MEASUREMENT_MEASUREMENT
 220         gchar *imperial = NULL;
 221
 222         imperial = nl_langinfo (_NL_MEASUREMENT_MEASUREMENT);
 223         if (imperial && imperial[0] == 2)
 224                 return GTK_UNIT_INCH;  /* imperial */
 225         if (imperial && imperial[0] == 1)
 226                 return GTK_UNIT_MM;  /* metric */
 227 #endif
 228
 229         if (strcmp (e, "default:mm") == 0)
 230                 return GTK_UNIT_MM;
 231         if (strcmp (e, "default:inch") == 0)
 232                 return GTK_UNIT_INCH;
 233
 234         g_warning ("Whoever translated default:mm did so wrongly.\n");
 235
 236         return GTK_UNIT_MM;
 237 }
 238
 239 static gdouble
 240 get_tolerance (gdouble size)
 241 {
 242         if (size < 150.0f)
 243                 return 1.5f;
 244         else if (size >= 150.0f && size <= 600.0f)
 245                 return 2.0f;
 246         else
 247                 return 3.0f;
 248 }
 249
 250 static char *
 251 ev_regular_paper_size (const EvDocumentInfo *info)
 252 {
 253         GList *paper_sizes, *l;
 254         gchar *exact_size;
 255         gchar *str = NULL;
 256         GtkUnit units;
 257
 258         units = get_default_user_units ();
 259
 260         if (units == GTK_UNIT_MM) {
 261                 exact_size = g_strdup_printf(_("%.0f × %.0f mm"),
 262                                              info->paper_width,
 263                                              info->paper_height);
 264         } else {
 265                 exact_size = g_strdup_printf (_("%.2f × %.2f inch"),
 266                                               info->paper_width  / 25.4f,
 267                                               info->paper_height / 25.4f);
 268         }
 269
 270         paper_sizes = gtk_paper_size_get_paper_sizes (FALSE);
 271
 272         for (l = paper_sizes; l && l->data; l = g_list_next (l)) {
 273                 GtkPaperSize *size = (GtkPaperSize *) l->data;
 274                 gdouble paper_width;
 275                 gdouble paper_height;
 276                 gdouble width_tolerance;
 277                 gdouble height_tolerance;
 278
 279                 paper_width = gtk_paper_size_get_width (size, GTK_UNIT_MM);
 280                 paper_height = gtk_paper_size_get_height (size, GTK_UNIT_MM);
 281
 282                 width_tolerance = get_tolerance (paper_width);
 283                 height_tolerance = get_tolerance (paper_height);
 284
 285                 if (ABS (info->paper_height - paper_height) <= height_tolerance &&
 286                     ABS (info->paper_width  - paper_width) <= width_tolerance) {
 287                         /* Note to translators: first placeholder is the paper name (eg.
 288                          * A4), second placeholder is the paper size (eg. 297x210 mm) */
 289                         str = g_strdup_printf (_("%s, Portrait (%s)"),
 290                                                gtk_paper_size_get_display_name (size),
 291                                                exact_size);
 292                 } else if (ABS (info->paper_width  - paper_height) <= height_tolerance &&
 293                            ABS (info->paper_height - paper_width) <= width_tolerance) {
 294                         /* Note to translators: first placeholder is the paper name (eg.
 295                          * A4), second placeholder is the paper size (eg. 297x210 mm) */
 296                         str = g_strdup_printf ( _("%s, Landscape (%s)"),
 297                                                 gtk_paper_size_get_display_name (size),
 298                                                 exact_size);
 299                 }
 300         }
 301
 302         g_list_foreach (paper_sizes, (GFunc) gtk_paper_size_free, NULL);
 303         g_list_free (paper_sizes);
 304
 305         if (str != NULL) {
 306                 g_free (exact_size);
 307                 return str;
 308         }
 309
 310         return exact_size;
 311 }
 312
 313 void
 314 ev_properties_view_set_info (EvPropertiesView *properties, const EvDocumentInfo *info)
 315 {
 316         GtkWidget *table;
 317         gchar     *text;
 318         gint       row = 0;
 319
 320         table = properties->table;
 321
 322         if (info->fields_mask & EV_DOCUMENT_INFO_TITLE) {
 323                 set_property (properties, GTK_TABLE (table), TITLE_PROPERTY, info->title, &row);
 324         }
 325         set_property (properties, GTK_TABLE (table), URI_PROPERTY, properties->uri, &row);
 326         if (info->fields_mask & EV_DOCUMENT_INFO_SUBJECT) {
 327                 set_property (properties, GTK_TABLE (table), SUBJECT_PROPERTY, info->subject, &row);
 328         }
 329         if (info->fields_mask & EV_DOCUMENT_INFO_AUTHOR) {
 330                 set_property (properties, GTK_TABLE (table), AUTHOR_PROPERTY, info->author, &row);
 331         }
 332         if (info->fields_mask & EV_DOCUMENT_INFO_KEYWORDS) {
 333                 set_property (properties, GTK_TABLE (table), KEYWORDS_PROPERTY, info->keywords, &row);
 334         }
 335         if (info->fields_mask & EV_DOCUMENT_INFO_PRODUCER) {
 336                 set_property (properties, GTK_TABLE (table), PRODUCER_PROPERTY, info->producer, &row);
 337         }
 338         if (info->fields_mask & EV_DOCUMENT_INFO_CREATOR) {
 339                 set_property (properties, GTK_TABLE (table), CREATOR_PROPERTY, info->creator, &row);
 340         }
 341         if (info->fields_mask & EV_DOCUMENT_INFO_CREATION_DATE) {
 342                 text = ev_document_misc_format_date (info->creation_date);
 343                 set_property (properties, GTK_TABLE (table), CREATION_DATE_PROPERTY, text, &row);
 344                 g_free (text);
 345         }
 346         if (info->fields_mask & EV_DOCUMENT_INFO_MOD_DATE) {
 347                 text = ev_document_misc_format_date (info->modified_date);
 348                 set_property (properties, GTK_TABLE (table), MOD_DATE_PROPERTY, text, &row);
 349                 g_free (text);
 350         }
 351         if (info->fields_mask & EV_DOCUMENT_INFO_FORMAT) {
 352                 set_property (properties, GTK_TABLE (table), FORMAT_PROPERTY, info->format, &row);
 353         }
 354         if (info->fields_mask & EV_DOCUMENT_INFO_N_PAGES) {
 355                 text = g_strdup_printf ("%d", info->n_pages);
 356                 set_property (properties, GTK_TABLE (table), N_PAGES_PROPERTY, text, &row);
 357                 g_free (text);
 358         }
 359         if (info->fields_mask & EV_DOCUMENT_INFO_LINEARIZED) {
 360                 set_property (properties, GTK_TABLE (table), LINEARIZED_PROPERTY, info->linearized, &row);
 361         }
 362         if (info->fields_mask & EV_DOCUMENT_INFO_SECURITY) {
 363                 set_property (properties, GTK_TABLE (table), SECURITY_PROPERTY, info->security, &row);
 364         }
 365         if (info->fields_mask & EV_DOCUMENT_INFO_PAPER_SIZE) {
 366                 text = ev_regular_paper_size (info);
 367                 set_property (properties, GTK_TABLE (table), PAPER_SIZE_PROPERTY, text, &row);
 368                 g_free (text);
 369         }
 370 }
 371
 372 static void
 373 ev_properties_view_init (EvPropertiesView *properties)
 374 {
 375         properties->table = gtk_table_new (13, 2, FALSE);
 376         gtk_table_set_col_spacings (GTK_TABLE (properties->table), 12);
 377         gtk_table_set_row_spacings (GTK_TABLE (properties->table), 6);
 378         gtk_container_set_border_width (GTK_CONTAINER (properties->table), 12);
 379         gtk_box_pack_start (GTK_BOX (properties), properties->table,
 380                             TRUE, TRUE, 0);
 381         gtk_widget_show (properties->table);
 382 }
 383
 384 void
 385 ev_properties_view_register_type (GTypeModule *module)
 386 {
 387         ev_properties_view_get_type ();
 388 }
 389
 390 GtkWidget *
 391 ev_properties_view_new (const gchar *uri)
 392 {
 393         EvPropertiesView *properties;
 394
 395         properties = g_object_new (EV_TYPE_PROPERTIES, NULL);
 396         properties->uri = g_strdup (uri);
 397
 398         return GTK_WIDGET (properties);
 399 }