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

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