libempathy-gtk/empathy-smiley-manager.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
   2 /*
   3  * Copyright (C) 2007-2008 Collabora Ltd.
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  18  *
  19  * Authors: Dafydd Harrie <dafydd.harries@collabora.co.uk>
  20  *          Xavier Claessens <xclaesse@gmail.com>
  21  */
  22
  23 #include "config.h"
  24 #include "empathy-smiley-manager.h"
  25
  26 #include <tp-account-widgets/tpaw-pixbuf-utils.h>
  27 #include <tp-account-widgets/tpaw-utils.h>
  28
  29 #include "empathy-ui-utils.h"
  30 #include "empathy-utils.h"
  31
  32 typedef struct _SmileyManagerTree SmileyManagerTree;
  33
  34 #define GET_PRIV(obj) EMPATHY_GET_PRIV (obj, EmpathySmileyManager)
  35 typedef struct {
  36         SmileyManagerTree *tree;
  37         GSList            *smileys;
  38 } EmpathySmileyManagerPriv;
  39
  40 struct _SmileyManagerTree {
  41         gunichar     c;
  42         GdkPixbuf   *pixbuf;
  43         gchar       *path;
  44         GSList      *childrens;
  45 };
  46
  47 G_DEFINE_TYPE (EmpathySmileyManager, empathy_smiley_manager, G_TYPE_OBJECT);
  48
  49 static EmpathySmileyManager *manager_singleton = NULL;
  50
  51 static SmileyManagerTree *
  52 smiley_manager_tree_new (gunichar c)
  53 {
  54         SmileyManagerTree *tree;
  55
  56         tree = g_slice_new0 (SmileyManagerTree);
  57         tree->c = c;
  58         tree->pixbuf = NULL;
  59         tree->childrens = NULL;
  60         tree->path = NULL;
  61
  62         return tree;
  63 }
  64
  65 static void
  66 smiley_manager_tree_free (SmileyManagerTree *tree)
  67 {
  68         GSList *l;
  69
  70         if (!tree) {
  71                 return;
  72         }
  73
  74         for (l = tree->childrens; l; l = l->next) {
  75                 smiley_manager_tree_free (l->data);
  76         }
  77
  78         if (tree->pixbuf) {
  79                 g_object_unref (tree->pixbuf);
  80         }
  81         g_slist_free (tree->childrens);
  82         g_free (tree->path);
  83         g_slice_free (SmileyManagerTree, tree);
  84 }
  85
  86 static EmpathySmiley *
  87 smiley_new (GdkPixbuf *pixbuf, const gchar *str)
  88 {
  89         EmpathySmiley *smiley;
  90
  91         smiley = g_slice_new0 (EmpathySmiley);
  92         smiley->pixbuf = g_object_ref (pixbuf);
  93         smiley->str = g_strdup (str);
  94
  95         return smiley;
  96 }
  97
  98 static void
  99 smiley_free (EmpathySmiley *smiley)
 100 {
 101         g_object_unref (smiley->pixbuf);
 102         g_free (smiley->str);
 103         g_slice_free (EmpathySmiley, smiley);
 104 }
 105
 106 static void
 107 smiley_manager_finalize (GObject *object)
 108 {
 109         EmpathySmileyManagerPriv *priv = GET_PRIV (object);
 110
 111         smiley_manager_tree_free (priv->tree);
 112         g_slist_foreach (priv->smileys, (GFunc) smiley_free, NULL);
 113         g_slist_free (priv->smileys);
 114 }
 115
 116 static GObject *
 117 smiley_manager_constructor (GType type,
 118                             guint n_props,
 119                             GObjectConstructParam *props)
 120 {
 121         GObject *retval;
 122
 123         if (manager_singleton) {
 124                 retval = g_object_ref (manager_singleton);
 125         } else {
 126                 retval = G_OBJECT_CLASS (empathy_smiley_manager_parent_class)->constructor
 127                         (type, n_props, props);
 128
 129                 manager_singleton = EMPATHY_SMILEY_MANAGER (retval);
 130                 g_object_add_weak_pointer (retval, (gpointer) &manager_singleton);
 131         }
 132
 133         return retval;
 134 }
 135
 136 static void
 137 empathy_smiley_manager_class_init (EmpathySmileyManagerClass *klass)
 138 {
 139         GObjectClass *object_class = G_OBJECT_CLASS (klass);
 140
 141         object_class->finalize = smiley_manager_finalize;
 142         object_class->constructor = smiley_manager_constructor;
 143
 144         g_type_class_add_private (object_class, sizeof (EmpathySmileyManagerPriv));
 145 }
 146
 147 static void
 148 empathy_smiley_manager_init (EmpathySmileyManager *manager)
 149 {
 150         EmpathySmileyManagerPriv *priv = G_TYPE_INSTANCE_GET_PRIVATE (manager,
 151                 EMPATHY_TYPE_SMILEY_MANAGER, EmpathySmileyManagerPriv);
 152
 153         manager->priv = priv;
 154         priv->tree = smiley_manager_tree_new ('\0');
 155         priv->smileys = NULL;
 156
 157         empathy_smiley_manager_load (manager);
 158 }
 159
 160 EmpathySmileyManager *
 161 empathy_smiley_manager_dup_singleton (void)
 162 {
 163         return g_object_new (EMPATHY_TYPE_SMILEY_MANAGER, NULL);
 164 }
 165
 166 static SmileyManagerTree *
 167 smiley_manager_tree_find_child (SmileyManagerTree *tree, gunichar c)
 168 {
 169         GSList *l;
 170
 171         for (l = tree->childrens; l; l = l->next) {
 172                 SmileyManagerTree *child = l->data;
 173
 174                 if (child->c == c) {
 175                         return child;
 176                 }
 177         }
 178
 179         return NULL;
 180 }
 181
 182 static SmileyManagerTree *
 183 smiley_manager_tree_find_or_insert_child (SmileyManagerTree *tree, gunichar c)
 184 {
 185         SmileyManagerTree *child;
 186
 187         child = smiley_manager_tree_find_child (tree, c);
 188
 189         if (!child) {
 190                 child = smiley_manager_tree_new (c);
 191                 tree->childrens = g_slist_prepend (tree->childrens, child);
 192         }
 193
 194         return child;
 195 }
 196
 197 static void
 198 smiley_manager_tree_insert (SmileyManagerTree *tree,
 199                             GdkPixbuf         *pixbuf,
 200                             const gchar       *str,
 201                             const gchar       *path)
 202 {
 203         SmileyManagerTree *child;
 204
 205         child = smiley_manager_tree_find_or_insert_child (tree, g_utf8_get_char (str));
 206
 207         str = g_utf8_next_char (str);
 208         if (*str) {
 209                 smiley_manager_tree_insert (child, pixbuf, str, path);
 210                 return;
 211         }
 212
 213         child->pixbuf = g_object_ref (pixbuf);
 214         child->path = g_strdup (path);
 215 }
 216
 217 static void
 218 smiley_manager_add_valist (EmpathySmileyManager *manager,
 219                            GdkPixbuf            *pixbuf,
 220                            const gchar          *path,
 221                            const gchar          *first_str,
 222                            va_list               var_args)
 223 {
 224         EmpathySmileyManagerPriv *priv = GET_PRIV (manager);
 225         const gchar              *str;
 226         EmpathySmiley            *smiley;
 227
 228         for (str = first_str; str; str = va_arg (var_args, gchar*)) {
 229                 smiley_manager_tree_insert (priv->tree, pixbuf, str, path);
 230         }
 231
 232         g_object_set_data_full (G_OBJECT (pixbuf), "smiley_str",
 233                                 g_strdup (first_str), g_free);
 234         smiley = smiley_new (pixbuf, first_str);
 235         priv->smileys = g_slist_prepend (priv->smileys, smiley);
 236 }
 237
 238 void
 239 empathy_smiley_manager_add (EmpathySmileyManager *manager,
 240                             const gchar          *icon_name,
 241                             const gchar          *first_str,
 242                             ...)
 243 {
 244         GdkPixbuf *pixbuf;
 245         va_list    var_args;
 246
 247         g_return_if_fail (EMPATHY_IS_SMILEY_MANAGER (manager));
 248         g_return_if_fail (!TPAW_STR_EMPTY (icon_name));
 249         g_return_if_fail (!TPAW_STR_EMPTY (first_str));
 250
 251         pixbuf = tpaw_pixbuf_from_icon_name (icon_name, GTK_ICON_SIZE_MENU);
 252         if (pixbuf) {
 253                 gchar *path;
 254
 255                 va_start (var_args, first_str);
 256                 path = tpaw_filename_from_icon_name (icon_name, GTK_ICON_SIZE_MENU);
 257                 smiley_manager_add_valist (manager, pixbuf, path, first_str, var_args);
 258                 va_end (var_args);
 259                 g_object_unref (pixbuf);
 260                 g_free (path);
 261         }
 262 }
 263
 264 void
 265 empathy_smiley_manager_load (EmpathySmileyManager *manager)
 266 {
 267         g_return_if_fail (EMPATHY_IS_SMILEY_MANAGER (manager));
 268
 269         /* From fd.o icon-naming spec */
 270         empathy_smiley_manager_add (manager, "face-angel",      "O:-)",  "O:)",  NULL);
 271         empathy_smiley_manager_add (manager, "face-angry",      "X-(",   ":@",   NULL);
 272         empathy_smiley_manager_add (manager, "face-cool",       "B-)",   NULL);
 273         empathy_smiley_manager_add (manager, "face-crying",     ":'(",           NULL);
 274         empathy_smiley_manager_add (manager, "face-devilish",   ">:-)",  ">:)",  NULL);
 275         empathy_smiley_manager_add (manager, "face-embarrassed",":-[",   ":[",   ":-$", ":$", NULL);
 276         empathy_smiley_manager_add (manager, "face-kiss",       ":-*",   ":*",   NULL);
 277         empathy_smiley_manager_add (manager, "face-laugh",      ":-))",  ":))",  NULL);
 278         empathy_smiley_manager_add (manager, "face-monkey",     ":-(|)", ":(|)", NULL);
 279         empathy_smiley_manager_add (manager, "face-plain",      ":-|",   ":|",   NULL);
 280         empathy_smiley_manager_add (manager, "face-raspberry",  ":-P",   ":P",   ":-p", ":p", NULL);
 281         empathy_smiley_manager_add (manager, "face-sad",        ":-(",   ":(",   NULL);
 282         empathy_smiley_manager_add (manager, "face-sick",       ":-&",   ":&",   NULL);
 283         empathy_smiley_manager_add (manager, "face-smile",      ":-)",   ":)",   NULL);
 284         empathy_smiley_manager_add (manager, "face-smile-big",  ":-D",   ":D",   ":-d", ":d", NULL);
 285         empathy_smiley_manager_add (manager, "face-smirk",      ":-!",   ":!",   NULL);
 286         empathy_smiley_manager_add (manager, "face-surprise",   ":-O",   ":O",   ":-o", ":o", NULL);
 287         empathy_smiley_manager_add (manager, "face-tired",      "|-)",   "|)",   NULL);
 288         empathy_smiley_manager_add (manager, "face-uncertain",  ":-/",   ":/",   NULL);
 289         empathy_smiley_manager_add (manager, "face-wink",       ";-)",   ";)",   NULL);
 290         empathy_smiley_manager_add (manager, "face-worried",    ":-S",   ":S",   ":-s", ":s", NULL);
 291 }
 292
 293 static EmpathySmileyHit *
 294 smiley_hit_new (SmileyManagerTree *tree,
 295                 guint              start,
 296                 guint              end)
 297 {
 298         EmpathySmileyHit *hit;
 299
 300         hit = g_slice_new (EmpathySmileyHit);
 301         hit->pixbuf = tree->pixbuf;
 302         hit->path = tree->path;
 303         hit->start = start;
 304         hit->end = end;
 305
 306         return hit;
 307 }
 308
 309 void
 310 empathy_smiley_hit_free (EmpathySmileyHit *hit)
 311 {
 312         g_return_if_fail (hit != NULL);
 313
 314         g_slice_free (EmpathySmileyHit, hit);
 315 }
 316
 317 GSList *
 318 empathy_smiley_manager_parse_len (EmpathySmileyManager *manager,
 319                                   const gchar          *text,
 320                                   gssize                len)
 321 {
 322         EmpathySmileyManagerPriv *priv = GET_PRIV (manager);
 323         EmpathySmileyHit         *hit;
 324         GSList                   *hits = NULL;
 325         SmileyManagerTree        *cur_tree = priv->tree;
 326         const gchar              *cur_str;
 327         const gchar              *start = NULL;
 328
 329         g_return_val_if_fail (EMPATHY_IS_SMILEY_MANAGER (manager), NULL);
 330         g_return_val_if_fail (text != NULL, NULL);
 331
 332         /* If len is negative, parse the string until we find '\0' */
 333         if (len < 0) {
 334                 len = G_MAXSSIZE;
 335         }
 336
 337         /* Parse the len first bytes of text to find smileys. Each time a smiley
 338          * is detected, append a EmpathySmileyHit struct to the returned list,
 339          * containing the smiley pixbuf and the position of the text to be
 340          * replaced by it.
 341          * cur_str is a pointer in the text showing the current position
 342          * of the parsing. It is always at the begining of an UTF-8 character,
 343          * because we support unicode smileys! For example we could want to
 344          * replace ™ by an image. */
 345
 346         for (cur_str = text;
 347              *cur_str != '\0' && cur_str - text < len;
 348              cur_str = g_utf8_next_char (cur_str)) {
 349                 SmileyManagerTree *child;
 350                 gunichar           c;
 351
 352                 c = g_utf8_get_char (cur_str);
 353                 child = smiley_manager_tree_find_child (cur_tree, c);
 354
 355                 /* If we have a child it means c is part of a smiley */
 356                 if (child) {
 357                         if (cur_tree == priv->tree) {
 358                                 /* c is the first char of some smileys, keep
 359                                  * the begining position */
 360                                 start = cur_str;
 361                         }
 362                         cur_tree = child;
 363                         continue;
 364                 }
 365
 366                 /* c is not part of a smiley. let's check if we found a smiley
 367                  * before it. */
 368                 if (cur_tree->pixbuf != NULL) {
 369                         /* found! */
 370                         hit = smiley_hit_new (cur_tree, start - text,
 371                                               cur_str - text);
 372                         hits = g_slist_prepend (hits, hit);
 373
 374                         /* c was not part of this smiley, check if a new smiley
 375                          * start with it. */
 376                         cur_tree = smiley_manager_tree_find_child (priv->tree, c);
 377                         if (cur_tree) {
 378                                 start = cur_str;
 379                         } else {
 380                                 cur_tree = priv->tree;
 381                         }
 382                 } else if (cur_tree != priv->tree) {
 383                         /* We searched a smiley starting at 'start' but we ended
 384                          * with no smiley. Look again starting from next char.
 385                          *
 386                          * For example ">:)" and ":(" are both valid smileys,
 387                          * when parsing text ">:(" we first see '>' which could
 388                          * be the start of a smiley. 'start' variable is set to
 389                          * that position and we parse next char which is ':' and
 390                          * is still potential smiley. Then we see '(' which is
 391                          * NOT part of the smiley, ">:(" does not exist, so we
 392                          * have to start again from ':' to find ":(" which is
 393                          * correct smiley. */
 394                         cur_str = start;
 395                         cur_tree = priv->tree;
 396                 }
 397         }
 398
 399         /* Check if last char of the text was the end of a smiley */
 400         if (cur_tree->pixbuf != NULL) {
 401                 hit = smiley_hit_new (cur_tree, start - text, cur_str - text);
 402                 hits = g_slist_prepend (hits, hit);
 403         }
 404
 405         return g_slist_reverse (hits);
 406 }
 407
 408 GSList *
 409 empathy_smiley_manager_get_all (EmpathySmileyManager *manager)
 410 {
 411         EmpathySmileyManagerPriv *priv = GET_PRIV (manager);
 412
 413         return priv->smileys;
 414 }
 415
 416 typedef struct {
 417         EmpathySmileyManager *manager;
 418         EmpathySmiley        *smiley;
 419         EmpathySmileyMenuFunc func;
 420         gpointer              user_data;
 421 } ActivateData;
 422
 423 static void
 424 smiley_menu_data_free (gpointer  user_data,
 425                        GClosure *closure)
 426 {
 427         ActivateData *data = (ActivateData *) user_data;
 428
 429         g_object_unref (data->manager);
 430         g_slice_free (ActivateData, data);
 431 }
 432
 433 static void
 434 smiley_menu_activate_cb (GtkMenuItem *menuitem,
 435                          gpointer     user_data)
 436 {
 437         ActivateData *data = (ActivateData *) user_data;
 438
 439         data->func (data->manager, data->smiley, data->user_data);
 440 }
 441
 442 GtkWidget *
 443 empathy_smiley_menu_new (EmpathySmileyManager *manager,
 444                          EmpathySmileyMenuFunc func,
 445                          gpointer              user_data)
 446 {
 447         EmpathySmileyManagerPriv *priv = GET_PRIV (manager);
 448         GSList                   *l;
 449         GtkWidget                *menu;
 450         gint                      x = 0;
 451         gint                      y = 0;
 452
 453         g_return_val_if_fail (EMPATHY_IS_SMILEY_MANAGER (manager), NULL);
 454         g_return_val_if_fail (func != NULL, NULL);
 455
 456         menu = gtk_menu_new ();
 457
 458         for (l = priv->smileys; l; l = l->next) {
 459                 EmpathySmiley *smiley;
 460                 GtkWidget     *item;
 461                 GtkWidget     *image;
 462                 ActivateData  *data;
 463
 464                 smiley = l->data;
 465                 image = gtk_image_new_from_pixbuf (smiley->pixbuf);
 466
 467                 item = gtk_image_menu_item_new_with_label ("");
 468                 gtk_image_menu_item_set_image (GTK_IMAGE_MENU_ITEM (item), image);
 469                 gtk_image_menu_item_set_always_show_image (GTK_IMAGE_MENU_ITEM (item), TRUE);
 470
 471                 gtk_menu_attach (GTK_MENU (menu), item,
 472                                  x, x + 1, y, y + 1);
 473
 474                 gtk_widget_set_tooltip_text (item, smiley->str);
 475
 476                 data = g_slice_new (ActivateData);
 477                 data->manager = g_object_ref (manager);
 478                 data->smiley = smiley;
 479                 data->func = func;
 480                 data->user_data = user_data;
 481
 482                 g_signal_connect_data (item, "activate",
 483                                        G_CALLBACK (smiley_menu_activate_cb),
 484                                        data,
 485                                        smiley_menu_data_free,
 486                                        0);
 487
 488                 if (x > 3) {
 489                         y++;
 490                         x = 0;
 491                 } else {
 492                         x++;
 493                 }
 494         }
 495
 496         gtk_widget_show_all (menu);
 497
 498         return menu;
 499 }
 500