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