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_PAGE_FITV, "EV_LINK_TYPE_PAGE_FITV", "page-fitv" },
  76                         { EV_LINK_TYPE_EXTERNAL_URI, "EV_LINK_TYPE_EXTERNAL_URI", "external" },
  77                         { 0, NULL, NULL }
  78                 };
  79
  80                 type = g_enum_register_static ("EvLinkType", values);
  81         }
  82
  83         return type;
  84 }
  85
  86 const char *
  87 ev_link_get_title (EvLink *self)
  88 {
  89         g_return_val_if_fail (EV_IS_LINK (self), NULL);
  90
  91         return self->priv->title;
  92 }
  93
  94 const char *
  95 ev_link_get_uri (EvLink *self)
  96 {
  97         g_return_val_if_fail (EV_IS_LINK (self), NULL);
  98
  99         return self->priv->uri;
 100 }
 101
 102 EvLinkType
 103 ev_link_get_link_type (EvLink *self)
 104 {
 105         g_return_val_if_fail (EV_IS_LINK (self), 0);
 106
 107         return self->priv->type;
 108 }
 109
 110 int
 111 ev_link_get_page (EvLink *self)
 112 {
 113         g_return_val_if_fail (EV_IS_LINK (self), 0);
 114
 115         return self->priv->page;
 116 }
 117
 118 double
 119 ev_link_get_top (EvLink *self)
 120 {
 121         g_return_val_if_fail (EV_IS_LINK (self), 0);
 122
 123         return self->priv->top;
 124 }
 125
 126 double
 127 ev_link_get_left (EvLink *self)
 128 {
 129         g_return_val_if_fail (EV_IS_LINK (self), 0);
 130
 131         return self->priv->left;
 132 }
 133
 134 double
 135 ev_link_get_zoom (EvLink *self)
 136 {
 137         g_return_val_if_fail (EV_IS_LINK (self), 0);
 138
 139         return self->priv->zoom;
 140 }
 141
 142 static void
 143 ev_link_get_property (GObject *object, guint prop_id, GValue *value,
 144                       GParamSpec *param_spec)
 145 {
 146         EvLink *self;
 147
 148         self = EV_LINK (object);
 149
 150         switch (prop_id) {
 151         case PROP_TITLE:
 152                 g_value_set_string (value, self->priv->title);
 153                 break;
 154         case PROP_URI:
 155                 g_value_set_string (value, self->priv->uri);
 156                 break;
 157         case PROP_TYPE:
 158                 g_value_set_enum (value, self->priv->type);
 159                 break;
 160         case PROP_PAGE:
 161                 g_value_set_int (value, self->priv->page);
 162                 break;
 163         case PROP_TOP:
 164                 g_value_set_double (value, self->priv->top);
 165                 break;
 166         case PROP_LEFT:
 167                 g_value_set_double (value, self->priv->left);
 168                 break;
 169         case PROP_ZOOM:
 170                 g_value_set_double (value, self->priv->zoom);
 171                 break;
 172         default:
 173                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object,
 174                                                    prop_id,
 175                                                    param_spec);
 176                 break;
 177         }
 178 }
 179
 180 static void
 181 ev_link_set_property (GObject *object, guint prop_id, const GValue *value,
 182                       GParamSpec *param_spec)
 183 {
 184         EvLink *link = EV_LINK (object);
 185
 186         switch (prop_id) {
 187         case PROP_TITLE:
 188                 link->priv->title = g_strdup (g_value_get_string (value));
 189                 break;
 190         case PROP_URI:
 191                 link->priv->uri = g_strdup (g_value_get_string (value));
 192                 break;
 193         case PROP_TYPE:
 194                 link->priv->type = g_value_get_enum (value);
 195                 break;
 196         case PROP_PAGE:
 197                 link->priv->page = g_value_get_int (value);
 198                 break;
 199         case PROP_TOP:
 200                 link->priv->top = g_value_get_double (value);
 201                 break;
 202         case PROP_LEFT:
 203                 link->priv->left = g_value_get_double (value);
 204                 break;
 205         case PROP_ZOOM:
 206                 link->priv->zoom = g_value_get_double (value);
 207                 break;
 208
 209         default:
 210                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object,
 211                                                    prop_id,
 212                                                    param_spec);
 213                 break;
 214         }
 215 }
 216
 217 static void
 218 ev_window_dispose (GObject *object)
 219 {
 220         EvLinkPrivate *priv;
 221
 222         g_return_if_fail (EV_IS_LINK (object));
 223
 224         priv = EV_LINK (object)->priv;
 225
 226         if (priv->title) {
 227                 g_free (priv->title);
 228                 priv->title = NULL;
 229         }
 230
 231         if (priv->uri) {
 232                 g_free (priv->uri);
 233                 priv->uri = NULL;
 234         }
 235
 236         G_OBJECT_CLASS (ev_link_parent_class)->dispose (object);
 237 }
 238
 239 static void
 240 ev_link_init (EvLink *ev_link)
 241 {
 242         ev_link->priv = EV_LINK_GET_PRIVATE (ev_link);
 243
 244         ev_link->priv->type = EV_LINK_TYPE_TITLE;
 245 }
 246
 247 static void
 248 ev_link_class_init (EvLinkClass *ev_window_class)
 249 {
 250         GObjectClass *g_object_class;
 251
 252         g_object_class = G_OBJECT_CLASS (ev_window_class);
 253         g_object_class->dispose = ev_window_dispose;
 254         g_object_class->set_property = ev_link_set_property;
 255         g_object_class->get_property = ev_link_get_property;
 256
 257         g_type_class_add_private (g_object_class, sizeof (EvLinkPrivate));
 258
 259         g_object_class_install_property (g_object_class,
 260                                          PROP_TITLE,
 261                                          g_param_spec_string ("title",
 262                                                               "Link Title",
 263                                                               "The link title",
 264                                                               NULL,
 265                                                               G_PARAM_READWRITE |
 266                                                               G_PARAM_CONSTRUCT_ONLY));
 267         g_object_class_install_property (g_object_class,
 268                                          PROP_URI,
 269                                          g_param_spec_string ("uri",
 270                                                               "Link URI",
 271                                                               "The link URI",
 272                                                               NULL,
 273                                                               G_PARAM_READWRITE |
 274                                                               G_PARAM_CONSTRUCT_ONLY));
 275         g_object_class_install_property (g_object_class,
 276                                          PROP_TYPE,
 277                                          g_param_spec_enum  ("type",
 278                                                              "Link Type",
 279                                                              "The link type",
 280                                                              EV_TYPE_LINK_TYPE,
 281                                                              EV_LINK_TYPE_TITLE,
 282                                                              G_PARAM_READWRITE |
 283                                                              G_PARAM_CONSTRUCT_ONLY));
 284         g_object_class_install_property (g_object_class,
 285                                          PROP_PAGE,
 286                                          g_param_spec_int ("page",
 287                                                            "Link Page",
 288                                                            "The link page",
 289                                                             -1,
 290                                                             G_MAXINT,
 291                                                             0,
 292                                                             G_PARAM_READWRITE |
 293                                                             G_PARAM_CONSTRUCT_ONLY));
 294         g_object_class_install_property (g_object_class,
 295                                          PROP_LEFT,
 296                                          g_param_spec_double ("left",
 297                                                               "Left coordinate",
 298                                                               "The left coordinate",
 299                                                               -G_MAXDOUBLE,
 300                                                               G_MAXDOUBLE,
 301                                                               0,
 302                                                               G_PARAM_READWRITE |
 303                                                               G_PARAM_CONSTRUCT_ONLY));
 304         g_object_class_install_property (g_object_class,
 305                                          PROP_TOP,
 306                                          g_param_spec_double ("top",
 307                                                               "Top coordinate",
 308                                                               "The top coordinate",
 309                                                               -G_MAXDOUBLE,
 310                                                               G_MAXDOUBLE,
 311                                                               0,
 312                                                               G_PARAM_READWRITE |
 313                                                               G_PARAM_CONSTRUCT_ONLY));
 314         g_object_class_install_property (g_object_class,
 315                                          PROP_ZOOM,
 316                                          g_param_spec_double ("zoom",
 317                                                               "Zoom",
 318                                                               "Zoom",
 319                                                               0,
 320                                                               G_MAXDOUBLE,
 321                                                               0,
 322                                                               G_PARAM_READWRITE |
 323                                                               G_PARAM_CONSTRUCT_ONLY));
 324 }
 325
 326 EvLink *
 327 ev_link_new_title (const char *title)
 328 {
 329         return EV_LINK (g_object_new (EV_TYPE_LINK,
 330                                       "title", title,
 331                                       "type", EV_LINK_TYPE_TITLE,
 332                                       NULL));
 333 }
 334
 335 EvLink *
 336 ev_link_new_page (const char *title, int page)
 337 {
 338         return EV_LINK (g_object_new (EV_TYPE_LINK,
 339                                       "title", title,
 340                                       "page", page,
 341                                       "type", EV_LINK_TYPE_PAGE,
 342                                       NULL));
 343 }
 344
 345 EvLink *
 346 ev_link_new_page_xyz (const char *title,
 347                       int         page,
 348                       double      left,
 349                       double      top,
 350                       double      zoom)
 351 {
 352         return EV_LINK (g_object_new (EV_TYPE_LINK,
 353                                       "title", title,
 354                                       "page", page,
 355                                       "type", EV_LINK_TYPE_PAGE_XYZ,
 356                                       "left", left,
 357                                       "top", top,
 358                                       "zoom", zoom,
 359                                       NULL));
 360 }
 361
 362 EvLink *
 363 ev_link_new_page_fit (const char *title,
 364                       int         page)
 365 {
 366         return EV_LINK (g_object_new (EV_TYPE_LINK,
 367                                       "title", title,
 368                                       "page", page,
 369                                       "type", EV_LINK_TYPE_PAGE_FIT,
 370                                       NULL));
 371 }
 372
 373 EvLink *
 374 ev_link_new_page_fith (const char *title,
 375                        int         page,
 376                        double      top)
 377 {
 378         return EV_LINK (g_object_new (EV_TYPE_LINK,
 379                                       "title", title,
 380                                       "page", page,
 381                                       "type", EV_LINK_TYPE_PAGE_FITH,
 382                                       "top", top,
 383                                       NULL));
 384 }
 385
 386 EvLink *
 387 ev_link_new_page_fitv (const char *title,
 388                        int         page,
 389                        double      left)
 390 {
 391         return EV_LINK (g_object_new (EV_TYPE_LINK,
 392                                       "title", title,
 393                                       "page", page,
 394                                       "type", EV_LINK_TYPE_PAGE_FITV,
 395                                       "left", left,
 396                                       NULL));
 397 }
 398
 399 EvLink *
 400 ev_link_new_external (const char *title, const char *uri)
 401 {
 402         return EV_LINK (g_object_new (EV_TYPE_LINK,
 403                                       "title", title,
 404                                       "uri", uri,
 405                                       "type", EV_LINK_TYPE_EXTERNAL_URI,
 406                                       NULL));
 407 }
 408
 409
 410
 411 static void
 412 ev_link_mapping_free_foreach (EvLinkMapping *mapping)
 413 {
 414         g_object_unref (G_OBJECT (mapping->link));
 415         g_free (mapping);
 416 }
 417
 418 void
 419 ev_link_mapping_free (GList *link_mapping)
 420 {
 421         if (link_mapping == NULL)
 422                 return;
 423
 424         g_list_foreach (link_mapping, (GFunc) (ev_link_mapping_free_foreach), NULL);
 425         g_list_free (link_mapping);
 426 }
 427
 428
 429 EvLink *
 430 ev_link_mapping_find (GList   *link_mapping,
 431                       gdouble  x,
 432                       gdouble  y)
 433 {
 434         GList *list;
 435         EvLink *link = NULL;
 436         int i;
 437
 438         i = 0;
 439
 440         for (list = link_mapping; list; list = list->next) {
 441                 EvLinkMapping *mapping = list->data;
 442
 443                 i++;
 444                 if ((x >= mapping->x1) &&
 445                     (y >= mapping->y1) &&
 446                     (x <= mapping->x2) &&
 447                     (y <= mapping->y2)) {
 448                         link = mapping->link;
 449                         break;
 450                 }
 451         }
 452
 453         return link;
 454 }
 455