Pileus Git - ~andy/gtk/blob - demos/gtk-demo/stock_browser.c

   1 /* Stock Item/Icon Browser
   2  *
   3  * This source code for this demo doesn't demonstrate anything
   4  * particularly useful in applications. The purpose of the "demo" is
   5  * just to provide a handy place to browse the available stock icons
   6  * and stock items.
   7  */
   8
   9 #include <string.h>
  10
  11 #include <gtk/gtk.h>
  12
  13 static GtkWidget *window = NULL;
  14
  15 typedef struct _StockItemInfo StockItemInfo;
  16 struct _StockItemInfo
  17 {
  18   gchar *id;
  19   GtkStockItem item;
  20   GdkPixbuf *small_icon;
  21   gchar *macro;
  22   gchar *accel_str;
  23 };
  24
  25 /* Make StockItemInfo a boxed type so we can automatically
  26  * manage memory
  27  */
  28 #define STOCK_ITEM_INFO_TYPE stock_item_info_get_type ()
  29
  30 static void
  31 stock_item_info_free (StockItemInfo *info)
  32 {
  33   g_free (info->id);
  34   g_free (info->macro);
  35   g_free (info->accel_str);
  36   if (info->small_icon)
  37     g_object_unref (G_OBJECT (info->small_icon));
  38
  39   g_free (info);
  40 }
  41
  42 static StockItemInfo*
  43 stock_item_info_copy (StockItemInfo *src)
  44 {
  45   StockItemInfo *info;
  46
  47   info = g_new (StockItemInfo, 1);
  48   info->id = g_strdup (src->id);
  49   info->macro = g_strdup (src->macro);
  50   info->accel_str = g_strdup (src->accel_str);
  51
  52   info->item = src->item;
  53
  54   info->small_icon = src->small_icon;
  55   if (info->small_icon)
  56     g_object_ref (G_OBJECT (info->small_icon));
  57
  58   return info;
  59 }
  60
  61 static GType
  62 stock_item_info_get_type (void)
  63 {
  64   static GType our_type = 0;
  65
  66   if (our_type == 0)
  67     our_type = g_boxed_type_register_static ("StockItemInfo",
  68                                              (GBoxedCopyFunc) stock_item_info_copy,
  69                                              (GBoxedFreeFunc) stock_item_info_free);
  70
  71   return our_type;
  72 }
  73
  74 typedef struct _StockItemDisplay StockItemDisplay;
  75 struct _StockItemDisplay
  76 {
  77   GtkWidget *type_label;
  78   GtkWidget *macro_label;
  79   GtkWidget *id_label;
  80   GtkWidget *label_accel_label;
  81   GtkWidget *icon_image;
  82 };
  83
  84 /* columns in the tree model */
  85 enum {
  86   COLUMN_ICON_MACRO,
  87   COLUMN_LABEL,
  88   COLUMN_ACCEL,
  89   COLUMN_ID
  90 };
  91
  92 static gchar*
  93 id_to_macro (const gchar *id)
  94 {
  95   GString *macro;
  96   const gchar *cp;
  97   gchar *p;
  98
  99   /* gtk-foo -> GTK_STOCK_FOO */
 100
 101   cp = id;
 102   while (*cp && *cp != '-')
 103     ++cp;
 104
 105   if (*cp == '\0')
 106     return g_strdup ("??UNKNOWN??");
 107
 108   macro = g_string_new (NULL);
 109
 110   g_string_append_len (macro, id, cp - id);
 111
 112   g_string_append (macro, "_STOCK");
 113   g_string_append (macro, cp);
 114
 115   p = macro->str;
 116   while (*p)
 117     {
 118       *p = g_ascii_toupper (*p);
 119       if (*p == '-')
 120         *p = '_';
 121       ++p;
 122     }
 123
 124   return g_string_free (macro, FALSE);
 125 }
 126
 127 static GtkTreeModel*
 128 create_model (void)
 129 {
 130   GtkListStore *store;
 131   GSList *ids;
 132   GSList *tmp_list;
 133
 134   store = gtk_list_store_new (1, STOCK_ITEM_INFO_TYPE);
 135
 136   ids = gtk_stock_list_ids ();
 137   ids = g_slist_sort (ids, (GCompareFunc) strcmp);
 138   tmp_list = ids;
 139   while (tmp_list != NULL)
 140     {
 141       StockItemInfo info;
 142       GtkStockItem item;
 143       GtkTreeIter iter;
 144       GtkIconSet *icon_set;
 145
 146       info.id = tmp_list->data;
 147
 148       if (gtk_stock_lookup (info.id, &item))
 149         {
 150           info.item = item;
 151         }
 152       else
 153         {
 154           info.item.label = NULL;
 155           info.item.stock_id = NULL;
 156           info.item.modifier = 0;
 157           info.item.keyval = 0;
 158           info.item.translation_domain = NULL;
 159         }
 160
 161       /* only show icons for stock IDs that have default icons */
 162       icon_set = gtk_icon_factory_lookup_default (info.id);
 163       if (icon_set)
 164         {
 165           GtkIconSize *sizes = NULL;
 166           gint n_sizes = 0;
 167           gint i;
 168           GtkIconSize size;
 169
 170           /* See what sizes this stock icon really exists at */
 171           gtk_icon_set_get_sizes (icon_set, &sizes, &n_sizes);
 172
 173           /* Use menu size if it exists, otherwise first size found */
 174           size = sizes[0];
 175           i = 0;
 176           while (i < n_sizes)
 177             {
 178               if (sizes[i] == GTK_ICON_SIZE_MENU)
 179                 {
 180                   size = GTK_ICON_SIZE_MENU;
 181                   break;
 182                 }
 183               ++i;
 184             }
 185           g_free (sizes);
 186
 187           info.small_icon = gtk_widget_render_icon (window, info.id,
 188                                                     size,
 189                                                     NULL);
 190
 191           if (size != GTK_ICON_SIZE_MENU)
 192             {
 193               /* Make the result the proper size for our thumbnail */
 194               gint w, h;
 195               GdkPixbuf *scaled;
 196
 197               gtk_icon_size_lookup (GTK_ICON_SIZE_MENU, &w, &h);
 198
 199               scaled = gdk_pixbuf_scale_simple (info.small_icon,
 200                                                 w, h,
 201                                                 GDK_INTERP_BILINEAR);
 202
 203               g_object_unref (G_OBJECT (info.small_icon));
 204               info.small_icon = scaled;
 205             }
 206         }
 207       else
 208         info.small_icon = NULL;
 209
 210       if (info.item.keyval != 0)
 211         {
 212           info.accel_str = gtk_accelerator_name (info.item.keyval,
 213                                                  info.item.modifier);
 214         }
 215       else
 216         {
 217           info.accel_str = g_strdup ("");
 218         }
 219
 220       info.macro = id_to_macro (info.id);
 221
 222       gtk_list_store_append (store, &iter);
 223       gtk_list_store_set (store, &iter, 0, &info, -1);
 224
 225       g_free (info.macro);
 226       g_free (info.accel_str);
 227       if (info.small_icon)
 228         g_object_unref (G_OBJECT (info.small_icon));
 229
 230       tmp_list = g_slist_next (tmp_list);
 231     }
 232
 233   g_slist_foreach (ids, (GFunc)g_free, NULL);
 234   g_slist_free (ids);
 235
 236   return GTK_TREE_MODEL (store);
 237 }
 238
 239 static void
 240 selection_changed (GtkTreeSelection *selection)
 241 {
 242   GtkTreeView *treeview;
 243   StockItemDisplay *display;
 244   GtkTreeModel *model;
 245   GtkTreeIter iter;
 246
 247   treeview = gtk_tree_selection_get_tree_view (selection);
 248   display = g_object_get_data (G_OBJECT (treeview), "stock-display");
 249
 250   if (gtk_tree_selection_get_selected (selection, &model, &iter))
 251     {
 252       StockItemInfo *info;
 253       gchar *str;
 254
 255       gtk_tree_model_get (model, &iter,
 256                           0, &info,
 257                           -1);
 258
 259       if (info->small_icon && info->item.label)
 260         gtk_label_set_text (GTK_LABEL (display->type_label), "Icon and Item");
 261       else if (info->small_icon)
 262         gtk_label_set_text (GTK_LABEL (display->type_label), "Icon Only");
 263       else if (info->item.label)
 264         gtk_label_set_text (GTK_LABEL (display->type_label), "Item Only");
 265       else
 266         gtk_label_set_text (GTK_LABEL (display->type_label), "???????");
 267
 268       gtk_label_set_text (GTK_LABEL (display->macro_label), info->macro);
 269       gtk_label_set_text (GTK_LABEL (display->id_label), info->id);
 270
 271       if (info->item.label)
 272         {
 273           str = g_strdup_printf ("%s %s", info->item.label, info->accel_str);
 274           gtk_label_set_text_with_mnemonic (GTK_LABEL (display->label_accel_label), str);
 275           g_free (str);
 276         }
 277       else
 278         {
 279           gtk_label_set_text (GTK_LABEL (display->label_accel_label), "");
 280         }
 281
 282       /* The problem here is that some icons don't have SIZE_LARGE_TOOLBAR,
 283        * so we get a "missing image" icon...
 284        */
 285       if (info->small_icon)
 286         gtk_image_set_from_stock (GTK_IMAGE (display->icon_image), info->id,
 287                                   GTK_ICON_SIZE_LARGE_TOOLBAR);
 288       else
 289         gtk_image_set_from_pixbuf (GTK_IMAGE (display->icon_image), NULL);
 290
 291       stock_item_info_free (info);
 292     }
 293   else
 294     {
 295       gtk_label_set_text (GTK_LABEL (display->type_label), "No selected item");
 296       gtk_label_set_text (GTK_LABEL (display->macro_label), "");
 297       gtk_label_set_text (GTK_LABEL (display->id_label), "");
 298       gtk_label_set_text (GTK_LABEL (display->label_accel_label), "");
 299       gtk_image_set_from_pixbuf (GTK_IMAGE (display->icon_image), NULL);
 300     }
 301 }
 302
 303 static void
 304 macro_set_func_text (GtkTreeViewColumn *tree_column,
 305                      GtkCellRenderer   *cell,
 306                      GtkTreeModel      *model,
 307                      GtkTreeIter       *iter,
 308                      gpointer           data)
 309 {
 310   StockItemInfo *info;
 311
 312   gtk_tree_model_get (model, iter,
 313                       0, &info,
 314                       -1);
 315
 316   g_object_set (GTK_CELL_RENDERER (cell),
 317                 "text", info->macro,
 318                 NULL);
 319
 320   stock_item_info_free (info);
 321 }
 322
 323 static void
 324 macro_set_func_pixbuf (GtkTreeViewColumn *tree_column,
 325                        GtkCellRenderer   *cell,
 326                        GtkTreeModel      *model,
 327                        GtkTreeIter       *iter,
 328                        gpointer           data)
 329 {
 330   StockItemInfo *info;
 331
 332   gtk_tree_model_get (model, iter,
 333                       0, &info,
 334                       -1);
 335
 336   g_object_set (GTK_CELL_RENDERER (cell),
 337                 "pixbuf", info->small_icon,
 338                 NULL);
 339
 340   stock_item_info_free (info);
 341 }
 342
 343 static void
 344 id_set_func (GtkTreeViewColumn *tree_column,
 345              GtkCellRenderer   *cell,
 346              GtkTreeModel      *model,
 347              GtkTreeIter       *iter,
 348              gpointer           data)
 349 {
 350   StockItemInfo *info;
 351
 352   gtk_tree_model_get (model, iter,
 353                       0, &info,
 354                       -1);
 355
 356   g_object_set (GTK_CELL_RENDERER (cell),
 357                 "text", info->id,
 358                 NULL);
 359
 360   stock_item_info_free (info);
 361 }
 362
 363 static void
 364 accel_set_func (GtkTreeViewColumn *tree_column,
 365                 GtkCellRenderer   *cell,
 366                 GtkTreeModel      *model,
 367                 GtkTreeIter       *iter,
 368                 gpointer           data)
 369 {
 370   StockItemInfo *info;
 371
 372   gtk_tree_model_get (model, iter,
 373                       0, &info,
 374                       -1);
 375
 376   g_object_set (GTK_CELL_RENDERER (cell),
 377                 "text", info->accel_str,
 378                 NULL);
 379
 380   stock_item_info_free (info);
 381 }
 382
 383 static void
 384 label_set_func (GtkTreeViewColumn *tree_column,
 385                 GtkCellRenderer   *cell,
 386                 GtkTreeModel      *model,
 387                 GtkTreeIter       *iter,
 388                 gpointer           data)
 389 {
 390   StockItemInfo *info;
 391
 392   gtk_tree_model_get (model, iter,
 393                       0, &info,
 394                       -1);
 395
 396   g_object_set (GTK_CELL_RENDERER (cell),
 397                 "text", info->item.label,
 398                 NULL);
 399
 400   stock_item_info_free (info);
 401 }
 402
 403 GtkWidget *
 404 do_stock_browser (void)
 405 {
 406   if (!window)
 407     {
 408       GtkWidget *frame;
 409       GtkWidget *vbox;
 410       GtkWidget *hbox;
 411       GtkWidget *sw;
 412       GtkWidget *treeview;
 413       GtkWidget *align;
 414       GtkTreeModel *model;
 415       GtkCellRenderer *cell_renderer;
 416       StockItemDisplay *display;
 417       GtkTreeSelection *selection;
 418       GtkTreeViewColumn *column;
 419
 420       window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
 421       gtk_window_set_title (GTK_WINDOW (window), "Stock Icons and Items");
 422
 423       gtk_signal_connect (GTK_OBJECT (window), "destroy", GTK_SIGNAL_FUNC (gtk_widget_destroyed), &window);
 424       gtk_container_set_border_width (GTK_CONTAINER (window), 8);
 425
 426       hbox = gtk_hbox_new (FALSE, 8);
 427       gtk_container_add (GTK_CONTAINER (window), hbox);
 428
 429       sw = gtk_scrolled_window_new (NULL, NULL);
 430       gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
 431                                       GTK_POLICY_NEVER,
 432                                       GTK_POLICY_AUTOMATIC);
 433       gtk_box_pack_start (GTK_BOX (hbox), sw, FALSE, FALSE, 0);
 434
 435       model = create_model ();
 436
 437       treeview = gtk_tree_view_new_with_model (model);
 438
 439       g_object_unref (G_OBJECT (model));
 440
 441       gtk_container_add (GTK_CONTAINER (sw), treeview);
 442
 443       column = gtk_tree_view_column_new ();
 444       gtk_tree_view_column_set_title (column, "Macro");
 445
 446       cell_renderer = gtk_cell_renderer_pixbuf_new ();
 447       gtk_tree_view_column_pack_start (column,
 448                                        cell_renderer,
 449                                        FALSE);
 450       gtk_tree_view_column_set_cell_data_func (column, cell_renderer,
 451                                                macro_set_func_pixbuf, NULL, NULL);
 452       cell_renderer = gtk_cell_renderer_text_new ();
 453       gtk_tree_view_column_pack_start (column,
 454                                        cell_renderer,
 455                                        TRUE);
 456       gtk_tree_view_column_set_cell_data_func (column, cell_renderer,
 457                                                macro_set_func_text, NULL, NULL);
 458
 459       gtk_tree_view_append_column (GTK_TREE_VIEW (treeview),
 460                                    column);
 461
 462       cell_renderer = gtk_cell_renderer_text_new ();
 463
 464       gtk_tree_view_insert_column_with_data_func (GTK_TREE_VIEW (treeview),
 465                                                   -1,
 466                                                   "Label",
 467                                                   cell_renderer,
 468                                                   label_set_func,
 469                                                   NULL,
 470                                                   NULL);
 471
 472       gtk_tree_view_insert_column_with_data_func (GTK_TREE_VIEW (treeview),
 473                                                   -1,
 474                                                   "Accel",
 475                                                   cell_renderer,
 476                                                   accel_set_func,
 477                                                   NULL,
 478                                                   NULL);
 479
 480       gtk_tree_view_insert_column_with_data_func (GTK_TREE_VIEW (treeview),
 481                                                   -1,
 482                                                   "ID",
 483                                                   cell_renderer,
 484                                                   id_set_func,
 485                                                   NULL,
 486                                                   NULL);
 487
 488       align = gtk_alignment_new (0.5, 0.0, 0.0, 0.0);
 489       gtk_box_pack_end (GTK_BOX (hbox), align, FALSE, FALSE, 0);
 490
 491       frame = gtk_frame_new ("Selected Item");
 492       gtk_container_add (GTK_CONTAINER (align), frame);
 493
 494       vbox = gtk_vbox_new (FALSE, 8);
 495       gtk_container_set_border_width (GTK_CONTAINER (vbox), 4);
 496       gtk_container_add (GTK_CONTAINER (frame), vbox);
 497
 498       display = g_new (StockItemDisplay, 1);
 499       g_object_set_data_full (G_OBJECT (treeview),
 500                               "stock-display",
 501                               display,
 502                               g_free); /* free display with treeview */
 503
 504       display->type_label = gtk_label_new (NULL);
 505       display->macro_label = gtk_label_new (NULL);
 506       display->id_label = gtk_label_new (NULL);
 507       display->label_accel_label = gtk_label_new (NULL);
 508       display->icon_image = gtk_image_new_from_pixbuf (NULL); /* empty image */
 509
 510       gtk_box_pack_start (GTK_BOX (vbox), display->type_label,
 511                           FALSE, FALSE, 0);
 512
 513       gtk_box_pack_start (GTK_BOX (vbox), display->icon_image,
 514                           FALSE, FALSE, 0);
 515
 516       gtk_box_pack_start (GTK_BOX (vbox), display->label_accel_label,
 517                           FALSE, FALSE, 0);
 518       gtk_box_pack_start (GTK_BOX (vbox), display->macro_label,
 519                           FALSE, FALSE, 0);
 520       gtk_box_pack_start (GTK_BOX (vbox), display->id_label,
 521                           FALSE, FALSE, 0);
 522
 523       selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (treeview));
 524       gtk_tree_selection_set_mode (selection, GTK_SELECTION_SINGLE);
 525
 526       g_signal_connect (G_OBJECT (selection),
 527                         "changed",
 528                         G_CALLBACK (selection_changed),
 529                         NULL);
 530     }
 531
 532   if (!GTK_WIDGET_VISIBLE (window))
 533     {
 534       gtk_widget_show_all (window);
 535     }
 536   else
 537     {
 538       gtk_widget_destroy (window);
 539       window = NULL;
 540     }
 541
 542   return window;
 543 }