backend/ev-link.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-link.h"
  26
  27 enum {
  28         PROP_0,
  29         PROP_TITLE,
  30         PROP_TYPE,
  31         PROP_PAGE,
  32         PROP_URI,
  33         PROP_LEFT,
  34         PROP_TOP,
  35         PROP_ZOOM
  36 };
  37
  38
  39 struct _EvLink {
  40         GObject base_instance;
  41         EvLinkPrivate *priv;
  42 };
  43
  44 struct _EvLinkClass {
  45         GObjectClass base_class;
  46 };
  47
  48 struct _EvLinkPrivate {
  49         char *title;
  50         char *uri;
  51         EvLinkType type;
  52         int page;
  53         double top;
  54         double left;
  55         double zoom;
  56 };
  57
  58 G_DEFINE_TYPE (EvLink, ev_link, G_TYPE_OBJECT)
  59
  60 #define EV_LINK_GET_PRIVATE(object) \
  61         (G_TYPE_INSTANCE_GET_PRIVATE ((object), EV_TYPE_LINK, EvLinkPrivate))
  62
  63 GType
  64 ev_link_type_get_type (void)
  65 {
  66         static GType type = 0;
  67
  68         if (G_UNLIKELY (type == 0)) {
  69                 static const GEnumValue values[] = {
  70                         { EV_LINK_TYPE_TITLE, "EV_LINK_TYPE_TITLE", "title" },
  71                         { EV_LINK_TYPE_PAGE, "EV_LINK_TYPE_PAGE", "page" },
  72                         { EV_LINK_TYPE_PAGE_XYZ, "EV_LINK_TYPE_PAGE_XYZ", "page-xyz" },
  73                         { EV_LINK_TYPE_PAGE_FIT, "EV_LINK_TYPE_PAGE_FIT", "page-fit" },
  74                         { EV_LINK_TYPE_PAGE_FITH, "EV_LINK_TYPE_PAGE_FITH", "page-fith" },
  75                         { EV_LINK_TYPE_EXTERNAL_URI, "EV_LINK_TYPE_EXTERNAL_URI", "external" },
  76                         { 0, NULL, NULL }
  77                 };
  78
  79                 type = g_enum_register_static ("EvLinkType", values);
  80         }
  81
  82         return type;
  83 }
  84
  85 const char *
  86 ev_link_get_title (EvLink *self)
  87 {
  88         g_return_val_if_fail (EV_IS_LINK (self), NULL);
  89
  90         return self->priv->title;
  91 }
  92
  93 const char *
  94 ev_link_get_uri (EvLink *self)
  95 {
  96         g_return_val_if_fail (EV_IS_LINK (self), NULL);
  97
  98         return self->priv->uri;
  99 }
 100
 101 EvLinkType
 102 ev_link_get_link_type (EvLink *self)
 103 {
 104         g_return_val_if_fail (EV_IS_LINK (self), 0);
 105
 106         return self->priv->type;
 107 }
 108
 109 int
 110 ev_link_get_page (EvLink *self)
 111 {
 112         g_return_val_if_fail (EV_IS_LINK (self), 0);
 113
 114         return self->priv->page;
 115 }
 116
 117 double
 118 ev_link_get_top (EvLink *self)
 119 {
 120         g_return_val_if_fail (EV_IS_LINK (self), 0);
 121
 122         return self->priv->top;
 123 }
 124
 125 double
 126 ev_link_get_left (EvLink *self)
 127 {
 128         g_return_val_if_fail (EV_IS_LINK (self), 0);
 129
 130         return self->priv->left;
 131 }
 132
 133 double
 134 ev_link_get_zoom (EvLink *self)
 135 {
 136         g_return_val_if_fail (EV_IS_LINK (self), 0);
 137
 138         return self->priv->zoom;
 139 }
 140
 141 static void
 142 ev_link_get_property (GObject *object, guint prop_id, GValue *value,
 143                       GParamSpec *param_spec)
 144 {
 145         EvLink *self;
 146
 147         self = EV_LINK (object);
 148
 149         switch (prop_id) {
 150         case PROP_TITLE:
 151                 g_value_set_string (value, self->priv->title);
 152                 break;
 153         case PROP_URI:
 154                 g_value_set_string (value, self->priv->uri);
 155                 break;
 156         case PROP_TYPE:
 157                 g_value_set_enum (value, self->priv->type);
 158                 break;
 159         case PROP_PAGE:
 160                 g_value_set_int (value, self->priv->page);
 161                 break;
 162         case PROP_TOP:
 163                 g_value_set_double (value, self->priv->top);
 164                 break;
 165         case PROP_LEFT:
 166                 g_value_set_double (value, self->priv->left);
 167                 break;
 168         case PROP_ZOOM:
 169                 g_value_set_double (value, self->priv->zoom);
 170                 break;
 171         default:
 172                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object,
 173                                                    prop_id,
 174                                                    param_spec);
 175                 break;
 176         }
 177 }
 178
 179 static void
 180 ev_link_set_property (GObject *object, guint prop_id, const GValue *value,
 181                       GParamSpec *param_spec)
 182 {
 183         EvLink *link = EV_LINK (object);
 184
 185         switch (prop_id) {
 186         case PROP_TITLE:
 187                 link->priv->title = g_strdup (g_value_get_string (value));
 188                 break;
 189         case PROP_URI:
 190                 link->priv->uri = g_strdup (g_value_get_string (value));
 191                 break;
 192         case PROP_TYPE:
 193                 link->priv->type = g_value_get_enum (value);
 194                 break;
 195         case PROP_PAGE:
 196                 link->priv->page = g_value_get_int (value);
 197                 break;
 198         case PROP_TOP:
 199                 link->priv->top = g_value_get_double (value);
 200                 break;
 201         case PROP_LEFT:
 202                 link->priv->left = g_value_get_double (value);
 203                 break;
 204         case PROP_ZOOM:
 205                 link->priv->zoom = g_value_get_double (value);
 206                 break;
 207
 208         default:
 209                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object,
 210                                                    prop_id,
 211                                                    param_spec);
 212                 break;
 213         }
 214 }
 215
 216 static void
 217 ev_window_dispose (GObject *object)
 218 {
 219         EvLinkPrivate *priv;
 220
 221         g_return_if_fail (EV_IS_LINK (object));
 222
 223         priv = EV_LINK (object)->priv;
 224
 225         if (priv->title) {
 226                 g_free (priv->title);
 227                 priv->title = NULL;
 228         }
 229
 230         if (priv->uri) {
 231                 g_free (priv->uri);
 232                 priv->uri = NULL;
 233         }
 234
 235         G_OBJECT_CLASS (ev_link_parent_class)->dispose (object);
 236 }
 237
 238 static void
 239 ev_link_init (EvLink *ev_link)
 240 {
 241         ev_link->priv = EV_LINK_GET_PRIVATE (ev_link);
 242
 243         ev_link->priv->type = EV_LINK_TYPE_TITLE;
 244 }
 245
 246 static void
 247 ev_link_class_init (EvLinkClass *ev_window_class)
 248 {
 249         GObjectClass *g_object_class;
 250
 251         g_object_class = G_OBJECT_CLASS (ev_window_class);
 252         g_object_class->dispose = ev_window_dispose;
 253         g_object_class->set_property = ev_link_set_property;
 254         g_object_class->get_property = ev_link_get_property;
 255
 256         g_type_class_add_private (g_object_class, sizeof (EvLinkPrivate));
 257
 258         g_object_class_install_property (g_object_class,
 259                                          PROP_TITLE,
 260                                          g_param_spec_string ("title",
 261                                                               "Link Title",
 262                                                               "The link title",
 263                                                               NULL,
 264                                                               G_PARAM_READWRITE |
 265                                                               G_PARAM_CONSTRUCT_ONLY));
 266         g_object_class_install_property (g_object_class,
 267                                          PROP_URI,
 268                                          g_param_spec_string ("uri",
 269                                                               "Link URI",
 270                                                               "The link URI",
 271                                                               NULL,
 272                                                               G_PARAM_READWRITE |
 273                                                               G_PARAM_CONSTRUCT_ONLY));
 274         g_object_class_install_property (g_object_class,
 275                                          PROP_TYPE,
 276                                          g_param_spec_enum  ("type",
 277                                                              "Link Type",
 278                                                              "The link type",
 279                                                              EV_TYPE_LINK_TYPE,
 280                                                              EV_LINK_TYPE_TITLE,
 281                                                              G_PARAM_READWRITE |
 282                                                              G_PARAM_CONSTRUCT_ONLY));
 283         g_object_class_install_property (g_object_class,
 284                                          PROP_PAGE,
 285                                          g_param_spec_int ("page",
 286                                                            "Link Page",
 287                                                            "The link page",
 288                                                             -1,
 289                                                             G_MAXINT,
 290                                                             0,
 291                                                             G_PARAM_READWRITE |
 292                                                             G_PARAM_CONSTRUCT_ONLY));
 293         g_object_class_install_property (g_object_class,
 294                                          PROP_LEFT,
 295                                          g_param_spec_double ("left",
 296                                                               "Left coordinate",
 297                                                               "The left coordinate",
 298                                                               -G_MAXDOUBLE,
 299                                                               G_MAXDOUBLE,
 300                                                               0,
 301                                                               G_PARAM_READWRITE |
 302                                                               G_PARAM_CONSTRUCT_ONLY));
 303         g_object_class_install_property (g_object_class,
 304                                          PROP_TOP,
 305                                          g_param_spec_double ("top",
 306                                                               "Top coordinate",
 307                                                               "The top coordinate",
 308                                                               -G_MAXDOUBLE,
 309                                                               G_MAXDOUBLE,
 310                                                               0,
 311                                                               G_PARAM_READWRITE |
 312                                                               G_PARAM_CONSTRUCT_ONLY));
 313         g_object_class_install_property (g_object_class,
 314                                          PROP_ZOOM,
 315                                          g_param_spec_double ("zoom",
 316                                                               "Zoom",
 317                                                               "Zoom",
 318                                                               0,
 319                                                               G_MAXDOUBLE,
 320                                                               0,
 321                                                               G_PARAM_READWRITE |
 322                                                               G_PARAM_CONSTRUCT_ONLY));
 323 }
 324
 325 EvLink *
 326 ev_link_new_title (const char *title)
 327 {
 328         return EV_LINK (g_object_new (EV_TYPE_LINK,
 329                                       "title", title,
 330                                       "type", EV_LINK_TYPE_TITLE,
 331                                       NULL));
 332 }
 333
 334 EvLink *
 335 ev_link_new_page (const char *title, int page)
 336 {
 337         return EV_LINK (g_object_new (EV_TYPE_LINK,
 338                                       "title", title,
 339                                       "page", page,
 340                                       "type", EV_LINK_TYPE_PAGE,
 341                                       NULL));
 342 }
 343
 344 EvLink *
 345 ev_link_new_page_xyz (const char *title,
 346                       int         page,
 347                       double      left,
 348                       double      top,
 349                       double      zoom)
 350 {
 351         return EV_LINK (g_object_new (EV_TYPE_LINK,
 352                                       "title", title,
 353                                       "page", page,
 354                                       "type", EV_LINK_TYPE_PAGE_XYZ,
 355                                       "left", left,
 356                                       "top", top,
 357                                       "zoom", zoom,
 358                                       NULL));
 359 }
 360
 361 EvLink *
 362 ev_link_new_page_fit (const char *title,
 363                       int         page)
 364 {
 365         return EV_LINK (g_object_new (EV_TYPE_LINK,
 366                                       "title", title,
 367                                       "page", page,
 368                                       "type", EV_LINK_TYPE_PAGE_FIT,
 369                                       NULL));
 370 }
 371
 372 EvLink *
 373 ev_link_new_page_fith (const char *title,
 374                        int         page,
 375                        double      top)
 376 {
 377         return EV_LINK (g_object_new (EV_TYPE_LINK,
 378                                       "title", title,
 379                                       "page", page,
 380                                       "type", EV_LINK_TYPE_PAGE_FITH,
 381                                       "top", top,
 382                                       NULL));
 383 }
 384
 385 EvLink *
 386 ev_link_new_external (const char *title, const char *uri)
 387 {
 388         return EV_LINK (g_object_new (EV_TYPE_LINK,
 389                                       "title", title,
 390                                       "uri", uri,
 391                                       "type", EV_LINK_TYPE_EXTERNAL_URI,
 392                                       NULL));
 393 }
 394
 395
 396
 397 static void
 398 ev_link_mapping_free_foreach (EvLinkMapping *mapping)
 399 {
 400         g_object_unref (G_OBJECT (mapping->link));
 401         g_free (mapping);
 402 }
 403
 404 void
 405 ev_link_mapping_free (GList *link_mapping)
 406 {
 407         if (link_mapping == NULL)
 408                 return;
 409
 410         g_list_foreach (link_mapping, (GFunc) (ev_link_mapping_free_foreach), NULL);
 411         g_list_free (link_mapping);
 412 }
 413
 414
 415 EvLink *
 416 ev_link_mapping_find (GList   *link_mapping,
 417                       gdouble  x,
 418                       gdouble  y)
 419 {
 420         GList *list;
 421         EvLink *link = NULL;
 422         int i;
 423
 424         i = 0;
 425
 426         for (list = link_mapping; list; list = list->next) {
 427                 EvLinkMapping *mapping = list->data;
 428
 429                 i++;
 430                 if ((x >= mapping->x1) &&
 431                     (y >= mapping->y1) &&
 432                     (x <= mapping->x2) &&
 433                     (y <= mapping->y2)) {
 434                         link = mapping->link;
 435                         break;
 436                 }
 437         }
 438
 439         return link;
 440 }
 441