shell/ev-properties.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.h"
  26 #include "ev-document-fonts.h"
  27 #include "ev-jobs.h"
  28 #include "ev-job-queue.h"
  29 #include "ev-page-cache.h"
  30
  31 #include <glib/gi18n.h>
  32 #include <gtk/gtk.h>
  33 #include <glade/glade.h>
  34 #include <time.h>
  35 #include <sys/time.h>
  36 #include <string.h>
  37
  38 enum
  39 {
  40         FONT_NAME_COL,
  41         NUM_COLS
  42 };
  43
  44 typedef enum
  45 {
  46         TITLE_PROPERTY,
  47         SUBJECT_PROPERTY,
  48         AUTHOR_PROPERTY,
  49         KEYWORDS_PROPERTY,
  50         PRODUCER_PROPERTY,
  51         CREATOR_PROPERTY,
  52         CREATION_DATE_PROPERTY,
  53         MOD_DATE_PROPERTY,
  54         N_PAGES_PROPERTY,
  55         LINEARIZED_PROPERTY,
  56         FORMAT_PROPERTY,
  57         SECURITY_PROPERTY
  58 } Property;
  59
  60 typedef struct
  61 {
  62         Property property;
  63         const char *label_id;
  64 } PropertyInfo;
  65
  66 static const PropertyInfo properties_info[] = {
  67         { TITLE_PROPERTY, "title" },
  68         { SUBJECT_PROPERTY, "subject" },
  69         { AUTHOR_PROPERTY, "author" },
  70         { KEYWORDS_PROPERTY, "keywords" },
  71         { PRODUCER_PROPERTY, "producer" },
  72         { CREATOR_PROPERTY, "creator" },
  73         { CREATION_DATE_PROPERTY, "created" },
  74         { MOD_DATE_PROPERTY, "modified" },
  75         { N_PAGES_PROPERTY, "pages" },
  76         { LINEARIZED_PROPERTY, "optimized" },
  77         { FORMAT_PROPERTY, "version" },
  78         { SECURITY_PROPERTY, "security" }
  79 };
  80
  81 struct _EvProperties {
  82         GObject base_instance;
  83
  84         GladeXML *xml;
  85
  86         GtkWidget *dialog;
  87         GtkWidget *fonts_treeview;
  88         GtkWidget *fonts_progress_label;
  89         GtkWidget *font_page;
  90
  91         EvDocument *document;
  92 };
  93
  94 struct _EvPropertiesClass {
  95         GObjectClass base_class;
  96 };
  97
  98 G_DEFINE_TYPE (EvProperties, ev_properties, G_TYPE_OBJECT)
  99
 100 static void
 101 ev_properties_dispose (GObject *object)
 102 {
 103         EvProperties *properties = EV_PROPERTIES (object);
 104
 105         if (properties->xml) {
 106                 g_object_unref (properties->xml);
 107                 properties->xml = NULL;
 108         }
 109 }
 110
 111 static void
 112 ev_properties_class_init (EvPropertiesClass *properties_class)
 113 {
 114         GObjectClass *g_object_class = G_OBJECT_CLASS (properties_class);
 115
 116         g_object_class->dispose = ev_properties_dispose;
 117 }
 118
 119 static void
 120 dialog_destroy_cb (GtkWidget *dialog, EvProperties *properties)
 121 {
 122         g_object_unref (properties);
 123 }
 124
 125 static void
 126 ev_properties_init (EvProperties *properties)
 127 {
 128         GladeXML *xml;
 129         GtkCellRenderer *renderer;
 130         GtkTreeViewColumn *column;
 131
 132         /* Create a new GladeXML object from XML file glade_file */
 133         xml = glade_xml_new (DATADIR "/evince-properties.glade", NULL, NULL);
 134         properties->xml = xml;
 135         g_assert (xml != NULL);
 136
 137         properties->dialog = glade_xml_get_widget (xml, "properties_dialog");
 138         properties->fonts_treeview = glade_xml_get_widget (xml, "fonts_treeview");
 139         properties->fonts_progress_label = glade_xml_get_widget (xml, "font_progress_label");
 140         properties->font_page = glade_xml_get_widget (xml, "fonts_page");
 141
 142         column = gtk_tree_view_column_new ();
 143         gtk_tree_view_column_set_expand (GTK_TREE_VIEW_COLUMN (column), TRUE);
 144         gtk_tree_view_append_column (GTK_TREE_VIEW (properties->fonts_treeview), column);
 145
 146         renderer = gtk_cell_renderer_text_new ();
 147         gtk_tree_view_column_pack_start (GTK_TREE_VIEW_COLUMN (column), renderer, FALSE);
 148         gtk_tree_view_column_set_title (GTK_TREE_VIEW_COLUMN (column), _("Name"));
 149         gtk_tree_view_column_set_attributes (GTK_TREE_VIEW_COLUMN (column), renderer,
 150                                              "text", EV_DOCUMENT_FONTS_COLUMN_NAME,
 151                                              NULL);
 152
 153         g_signal_connect (properties->dialog, "destroy",
 154                           G_CALLBACK (dialog_destroy_cb), properties);
 155 }
 156
 157 /* Returns a locale specific date and time representation */
 158 static char *
 159 ev_properties_format_date (GTime utime)
 160 {
 161         time_t time = (time_t) utime;
 162         struct tm t;
 163         char s[256];
 164         const char *fmt_hack = "%c";
 165         size_t len;
 166
 167         if (!localtime_r (&time, &t)) return NULL;
 168
 169         len = strftime (s, sizeof (s), fmt_hack, &t);
 170         if (len == 0 || s[0] == '\0') return NULL;
 171
 172         return g_locale_to_utf8 (s, -1, NULL, NULL, NULL);
 173 }
 174
 175 /* This is cut out of gconvert.c from glib (and mildly modified).  Not all
 176    backends give valid UTF-8 for properties, so we make sure that is.
 177  */
 178 static gchar *
 179 make_valid_utf8 (const gchar *name)
 180 {
 181   GString *string;
 182   const gchar *remainder, *invalid;
 183   gint remaining_bytes, valid_bytes;
 184
 185   string = NULL;
 186   remainder = name;
 187   remaining_bytes = strlen (name);
 188
 189   while (remaining_bytes != 0)
 190     {
 191       if (g_utf8_validate (remainder, remaining_bytes, &invalid))
 192         break;
 193       valid_bytes = invalid - remainder;
 194
 195       if (string == NULL)
 196         string = g_string_sized_new (remaining_bytes);
 197
 198       g_string_append_len (string, remainder, valid_bytes);
 199       g_string_append_c (string, '?');
 200
 201       remaining_bytes -= valid_bytes + 1;
 202       remainder = invalid + 1;
 203     }
 204
 205   if (string == NULL)
 206     return g_strdup (name);
 207
 208   g_string_append (string, remainder);
 209
 210   g_assert (g_utf8_validate (string->str, -1, NULL));
 211
 212   return g_string_free (string, FALSE);
 213 }
 214
 215 static void
 216 set_property (GladeXML *xml, Property property, const char *text)
 217 {
 218         GtkWidget *widget;
 219         char *valid_text;
 220
 221         widget = glade_xml_get_widget (xml, properties_info[property].label_id);
 222         g_return_if_fail (GTK_IS_LABEL (widget));
 223
 224         if (text == NULL || text[0] == '\000') {
 225                 gchar *markup;
 226
 227                 markup = g_markup_printf_escaped ("<i>%s</i>", _("None"));
 228                 gtk_label_set_markup (GTK_LABEL (widget), markup);
 229                 g_free (markup);
 230
 231                 return;
 232         }
 233         text = text ? text : "";
 234
 235         valid_text = make_valid_utf8 (text);
 236
 237         gtk_label_set_text (GTK_LABEL (widget), valid_text);
 238
 239         g_free (valid_text);
 240 }
 241
 242 static void
 243 update_progress_label (GtkWidget *label, double progress)
 244 {
 245         if (progress > 0) {
 246                 char *progress_text;
 247                 progress_text = g_strdup_printf (_("Gathering font information... %3d%%"),
 248                                                  (int) (progress * 100));
 249                 gtk_label_set_text (GTK_LABEL (label), progress_text);
 250                 g_free (progress_text);
 251                 gtk_widget_show (label);
 252         } else {
 253                 gtk_widget_hide (label);
 254         }
 255 }
 256
 257 static void
 258 job_fonts_finished_cb (EvJob *job, EvProperties *properties)
 259 {
 260         EvDocumentFonts *document_fonts = EV_DOCUMENT_FONTS (job->document);
 261         double progress;
 262
 263         progress = ev_document_fonts_get_progress (document_fonts);
 264         update_progress_label (properties->fonts_progress_label, progress);
 265
 266         if (EV_JOB_FONTS (job)->scan_completed) {
 267                 g_signal_handlers_disconnect_by_func
 268                                 (job, job_fonts_finished_cb, properties);
 269         } else {
 270                 GtkTreeModel *model;
 271                 EvJob *new_job;
 272
 273                 model = gtk_tree_view_get_model
 274                                 (GTK_TREE_VIEW (properties->fonts_treeview));
 275                 ev_document_doc_mutex_lock ();
 276                 ev_document_fonts_fill_model (document_fonts, model);
 277                 ev_document_doc_mutex_unlock ();
 278                 new_job = ev_job_fonts_new (job->document);
 279                 ev_job_queue_add_job (job, EV_JOB_PRIORITY_LOW);
 280                 g_object_unref (new_job);
 281         }
 282 }
 283
 284 static void
 285 setup_fonts_view (EvProperties *properties)
 286 {
 287         GtkTreeView *tree_view = GTK_TREE_VIEW (properties->fonts_treeview);
 288         GtkListStore *list_store;
 289         EvJob *job;
 290
 291         list_store = gtk_list_store_new (NUM_COLS, G_TYPE_STRING);
 292         gtk_tree_view_set_model (tree_view, GTK_TREE_MODEL (list_store));
 293
 294         job = ev_job_fonts_new (properties->document);
 295         g_signal_connect_object (job, "finished",
 296                                  G_CALLBACK (job_fonts_finished_cb),
 297                                  properties, 0);
 298         ev_job_queue_add_job (job, EV_JOB_PRIORITY_LOW);
 299         g_object_unref (job);
 300 }
 301
 302 void
 303 ev_properties_set_document (EvProperties *properties,
 304                             EvDocument   *document)
 305 {
 306         EvPageCache *page_cache;
 307         GladeXML *xml = properties->xml;
 308         const EvDocumentInfo *info;
 309         char *text;
 310
 311         properties->document = document;
 312
 313         page_cache = ev_page_cache_get (document);
 314         info = ev_page_cache_get_info (page_cache);
 315
 316         if (info->fields_mask & EV_DOCUMENT_INFO_TITLE) {
 317                 set_property (xml, TITLE_PROPERTY, info->title);
 318         }
 319         if (info->fields_mask & EV_DOCUMENT_INFO_SUBJECT) {
 320                 set_property (xml, SUBJECT_PROPERTY, info->subject);
 321         }
 322         if (info->fields_mask & EV_DOCUMENT_INFO_AUTHOR) {
 323                 set_property (xml, AUTHOR_PROPERTY, info->author);
 324         }
 325         if (info->fields_mask & EV_DOCUMENT_INFO_KEYWORDS) {
 326                 set_property (xml, KEYWORDS_PROPERTY, info->keywords);
 327         }
 328         if (info->fields_mask & EV_DOCUMENT_INFO_PRODUCER) {
 329                 set_property (xml, PRODUCER_PROPERTY, info->producer);
 330         }
 331         if (info->fields_mask & EV_DOCUMENT_INFO_CREATOR) {
 332                 set_property (xml, CREATOR_PROPERTY, info->creator);
 333         }
 334         if (info->fields_mask & EV_DOCUMENT_INFO_CREATION_DATE) {
 335                 text = ev_properties_format_date (info->creation_date);
 336                 set_property (xml, CREATION_DATE_PROPERTY, text);
 337                 g_free (text);
 338         }
 339         if (info->fields_mask & EV_DOCUMENT_INFO_MOD_DATE) {
 340                 text = ev_properties_format_date (info->modified_date);
 341                 set_property (xml, MOD_DATE_PROPERTY, text);
 342                 g_free (text);
 343         }
 344         if (info->fields_mask & EV_DOCUMENT_INFO_FORMAT) {
 345                 text = g_strdup_printf ("%s", info->format);
 346                 set_property (xml, FORMAT_PROPERTY, text);
 347         }
 348         if (info->fields_mask & EV_DOCUMENT_INFO_N_PAGES) {
 349                 text = g_strdup_printf ("%d", info->n_pages);
 350                 set_property (xml, N_PAGES_PROPERTY, text);
 351                 g_free (text);
 352         }
 353         if (info->fields_mask & EV_DOCUMENT_INFO_LINEARIZED) {
 354                 set_property (xml, LINEARIZED_PROPERTY, info->linearized);
 355         }
 356         if (info->fields_mask & EV_DOCUMENT_INFO_SECURITY) {
 357                 set_property (xml, SECURITY_PROPERTY, info->security);
 358         }
 359
 360         if (EV_IS_DOCUMENT_FONTS (document)) {
 361                 gtk_widget_show (properties->font_page);
 362                 setup_fonts_view (properties);
 363         } else {
 364                 gtk_widget_hide (properties->font_page);
 365         }
 366 }
 367
 368 EvProperties *
 369 ev_properties_new ()
 370 {
 371         EvProperties *properties;
 372
 373         properties = g_object_new (EV_TYPE_PROPERTIES, NULL);
 374
 375         return properties;
 376 }
 377
 378 void
 379 ev_properties_show (EvProperties *properties, GtkWidget *parent)
 380 {
 381         gtk_window_set_transient_for (GTK_WINDOW (properties->dialog),
 382                                       GTK_WINDOW (parent));
 383         g_signal_connect (properties->dialog, "response",
 384                           G_CALLBACK (gtk_widget_destroy), NULL);
 385         gtk_widget_show (properties->dialog);
 386 }