src/viklayerspanel.c

   1 /*
   2  * viking -- GPS Data and Topo Analyzer, Explorer, and Manager
   3  *
   4  * Copyright (C) 2003-2005, Evan Battaglia <gtoevan@gmx.net>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it 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  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU 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
  22 #ifdef HAVE_CONFIG_H
  23 #include "config.h"
  24 #endif
  25
  26 #include "viking.h"
  27
  28 #include <string.h>
  29
  30 #include <glib/gi18n.h>
  31
  32 enum {
  33   VLP_UPDATE_SIGNAL,
  34   VLP_LAST_SIGNAL
  35 };
  36
  37 static void layers_panel_class_init ( VikLayersPanelClass *klass );
  38 static void layers_panel_init ( VikLayersPanel *vlp );
  39 static void layers_item_edited (VikLayersPanel *vlp, GtkTreeIter *iter, const gchar *new_text);
  40 static void layers_item_toggled (VikLayersPanel *vlp, GtkTreeIter *iter);
  41
  42 static guint layers_panel_signals[VLP_LAST_SIGNAL] = { 0 };
  43
  44 static GObjectClass *parent_class;
  45
  46 struct _VikLayersPanel {
  47   GtkVBox vbox;
  48
  49   VikAggregateLayer *toplayer;
  50   GtkTreeIter toplayer_iter;
  51
  52   VikTreeview *vt;
  53   VikViewport *vvp; /* reference */
  54
  55   GtkItemFactory *popup_factory;
  56 };
  57
  58 static GtkItemFactoryEntry base_entries[] = {
  59  { N_("/C_ut"), NULL, (GtkItemFactoryCallback) vik_layers_panel_cut_selected, -1, "<StockItem>", GTK_STOCK_CUT },
  60  { N_("/_Copy"), NULL, (GtkItemFactoryCallback) vik_layers_panel_copy_selected, -1, "<StockItem>", GTK_STOCK_COPY },
  61  { N_("/_Paste"), NULL, (GtkItemFactoryCallback) vik_layers_panel_paste_selected, -1, "<StockItem>", GTK_STOCK_PASTE },
  62  { N_("/_Delete"), NULL, (GtkItemFactoryCallback) vik_layers_panel_delete_selected, -1, "<StockItem>", GTK_STOCK_DELETE },
  63  { N_("/New Layer"), NULL, NULL, -1, "<Branch>" },
  64 };
  65
  66 #define NUM_BASE_ENTRIES 5
  67
  68 static void layers_item_toggled (VikLayersPanel *vlp, GtkTreeIter *iter);
  69 static void layers_item_edited (VikLayersPanel *vlp, GtkTreeIter *iter, const gchar *new_text);
  70 static void layers_popup_cb (VikLayersPanel *vlp);
  71 static void layers_popup ( VikLayersPanel *vlp, GtkTreeIter *iter, gint mouse_button );
  72 static gboolean layers_button_press_cb (VikLayersPanel *vlp, GdkEventButton *event);
  73 static void layers_move_item ( VikLayersPanel *vlp, gboolean up );
  74 static void layers_move_item_up ( VikLayersPanel *vlp );
  75 static void layers_move_item_down ( VikLayersPanel *vlp );
  76 static void layers_panel_finalize ( GObject *gob );
  77
  78 GType vik_layers_panel_get_type()
  79 {
  80   static GType vlp_type = 0;
  81
  82   if (!vlp_type)
  83   {
  84     static const GTypeInfo vlp_info =
  85     {
  86       sizeof (VikLayersPanelClass),
  87       NULL, /* base_init */
  88       NULL, /* base_finalize */
  89       (GClassInitFunc) layers_panel_class_init,
  90       NULL, /* class_finalize */
  91       NULL, /* class_data */
  92       sizeof (VikLayersPanel),
  93       0,
  94       (GInstanceInitFunc) layers_panel_init,
  95     };
  96     vlp_type = g_type_register_static ( GTK_TYPE_VBOX, "VikLayersPanel", &vlp_info, 0 );
  97   }
  98
  99   return vlp_type;
 100 }
 101
 102 static void layers_panel_class_init ( VikLayersPanelClass *klass )
 103 {
 104   GObjectClass *object_class;
 105
 106   object_class = G_OBJECT_CLASS (klass);
 107
 108   object_class->finalize = layers_panel_finalize;
 109
 110   parent_class = g_type_class_peek_parent (klass);
 111
 112   layers_panel_signals[VLP_UPDATE_SIGNAL] = g_signal_new ( "update", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_FIRST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (VikLayersPanelClass, update), NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
 113 }
 114
 115 VikLayersPanel *vik_layers_panel_new ()
 116 {
 117   return VIK_LAYERS_PANEL ( g_object_new ( VIK_LAYERS_PANEL_TYPE, NULL ) );
 118 }
 119
 120 void vik_layers_panel_set_viewport ( VikLayersPanel *vlp, VikViewport *vvp )
 121 {
 122   vlp->vvp = vvp;
 123   /* TODO: also update GCs (?) */
 124 }
 125
 126 VikViewport *vik_layers_panel_get_viewport ( VikLayersPanel *vlp )
 127 {
 128   return vlp->vvp;
 129 }
 130
 131 static void layers_panel_init ( VikLayersPanel *vlp )
 132 {
 133   GtkWidget *hbox;
 134   GtkWidget *upbutton, *upimage, *downbutton, *downimage;
 135   GtkWidget *scrolledwindow;
 136   GtkItemFactoryEntry entry;
 137   guint i, tmp;
 138
 139   vlp->vvp = NULL;
 140
 141   hbox = gtk_hbox_new ( TRUE, 2 );
 142   vlp->vt = vik_treeview_new ( );
 143
 144   vlp->toplayer = vik_aggregate_layer_new ();
 145   vik_layer_rename ( VIK_LAYER(vlp->toplayer), _("Top Layer"));
 146   g_signal_connect_swapped ( G_OBJECT(vlp->toplayer), "update", G_CALLBACK(vik_layers_panel_emit_update), vlp );
 147
 148   vik_treeview_add_layer ( vlp->vt, NULL, &(vlp->toplayer_iter), VIK_LAYER(vlp->toplayer)->name, NULL, vlp->toplayer, VIK_LAYER_AGGREGATE, VIK_LAYER_AGGREGATE );
 149   vik_layer_realize ( VIK_LAYER(vlp->toplayer), vlp->vt, &(vlp->toplayer_iter) );
 150
 151   g_signal_connect_swapped ( vlp->vt, "popup_menu", G_CALLBACK(layers_popup_cb), vlp);
 152   g_signal_connect_swapped ( vlp->vt, "button_press_event", G_CALLBACK(layers_button_press_cb), vlp);
 153   g_signal_connect_swapped ( vlp->vt, "item_toggled", G_CALLBACK(layers_item_toggled), vlp);
 154   g_signal_connect_swapped ( vlp->vt, "item_edited", G_CALLBACK(layers_item_edited), vlp);
 155
 156   upimage = gtk_image_new_from_stock ( GTK_STOCK_GO_UP, GTK_ICON_SIZE_BUTTON );
 157   upbutton = gtk_button_new ( );
 158   gtk_container_add ( GTK_CONTAINER(upbutton), upimage );
 159   gtk_box_pack_start ( GTK_BOX(hbox), upbutton, TRUE, TRUE, 0 );
 160   g_signal_connect_swapped ( G_OBJECT(upbutton), "clicked", G_CALLBACK(layers_move_item_up), vlp );
 161   downimage = gtk_image_new_from_stock ( GTK_STOCK_GO_DOWN, GTK_ICON_SIZE_BUTTON );
 162   downbutton = gtk_button_new ( );
 163   gtk_container_add ( GTK_CONTAINER(downbutton), downimage );
 164   gtk_box_pack_start ( GTK_BOX(hbox), downbutton, TRUE, TRUE, 0 );
 165   g_signal_connect_swapped ( G_OBJECT(downbutton), "clicked", G_CALLBACK(layers_move_item_down), vlp );
 166
 167   scrolledwindow = gtk_scrolled_window_new ( NULL, NULL );
 168   gtk_scrolled_window_set_policy ( GTK_SCROLLED_WINDOW(scrolledwindow), GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC );
 169   gtk_container_add ( GTK_CONTAINER(scrolledwindow), GTK_WIDGET(vlp->vt) );
 170
 171   gtk_box_pack_start ( GTK_BOX(vlp), scrolledwindow, TRUE, TRUE, 0 );
 172   gtk_box_pack_start ( GTK_BOX(vlp), hbox, FALSE, FALSE, 0 );
 173
 174   vlp->popup_factory = gtk_item_factory_new ( GTK_TYPE_MENU, "<main>", NULL );
 175   gtk_item_factory_create_items ( vlp->popup_factory, NUM_BASE_ENTRIES, base_entries, vlp );
 176   for ( i = 0; i < VIK_LAYER_NUM_TYPES; i++ )
 177   {
 178     /* TODO: FIXME: if name has a '/' in it it will get all messed up. why not have an itemfactory field with
 179                     name, icon, shortcut, etc.? */
 180     entry.path = g_strdup_printf("%s/New %s Layer", base_entries[NUM_BASE_ENTRIES-1].path, vik_layer_get_interface(i)->name );
 181     entry.accelerator = NULL;
 182     entry.callback = (GtkItemFactoryCallback) vik_layers_panel_new_layer;
 183     entry.callback_action = i;
 184     if ( vik_layer_get_interface(i)->icon )
 185     {
 186       entry.item_type = "<ImageItem>";
 187       entry.extra_data = gdk_pixdata_serialize ( vik_layer_get_interface(i)->icon, &tmp );
 188     }
 189     else
 190       entry.item_type = "<Item>";
 191
 192     gtk_item_factory_create_item ( vlp->popup_factory, &entry, vlp, 1 );
 193     g_free ( (gpointer) entry.extra_data );
 194     g_free ( entry.path );
 195   }
 196 }
 197
 198 void vik_layers_panel_emit_update ( VikLayersPanel *vlp )
 199 {
 200   g_signal_emit ( G_OBJECT(vlp), layers_panel_signals[VLP_UPDATE_SIGNAL], 0 );
 201 }
 202
 203 static void layers_item_toggled (VikLayersPanel *vlp, GtkTreeIter *iter)
 204 {
 205   gboolean visible;
 206   gpointer p;
 207   gint type;
 208
 209   /* get type and data */
 210   type = vik_treeview_item_get_type ( vlp->vt, iter );
 211   p = vik_treeview_item_get_pointer ( vlp->vt, iter );
 212
 213   switch ( type )
 214   {
 215     case VIK_TREEVIEW_TYPE_LAYER:
 216       visible = (VIK_LAYER(p)->visible ^= 1);
 217       vik_layer_emit_update_although_invisible ( VIK_LAYER(p) ); /* set trigger for half-drawn */
 218       break;
 219     case VIK_TREEVIEW_TYPE_SUBLAYER:
 220       visible = vik_layer_sublayer_toggle_visible ( VIK_LAYER(vik_treeview_item_get_parent(vlp->vt, iter)),
 221                                                 vik_treeview_item_get_data(vlp->vt, iter), p);
 222       vik_layer_emit_update_although_invisible ( VIK_LAYER(vik_treeview_item_get_parent(vlp->vt, iter)) );
 223       break;
 224     default: return;
 225   }
 226
 227   vik_treeview_item_set_visible ( vlp->vt, iter, visible );
 228 }
 229
 230 static void layers_item_edited (VikLayersPanel *vlp, GtkTreeIter *iter, const gchar *new_text)
 231 {
 232   if ( vik_treeview_item_get_type ( vlp->vt, iter ) == VIK_TREEVIEW_TYPE_LAYER )
 233   {
 234     VikLayer *l;
 235
 236     /* get iter and layer */
 237     l = VIK_LAYER ( vik_treeview_item_get_pointer ( vlp->vt, iter ) );
 238
 239     if ( strcmp ( l->name, new_text ) != 0 )
 240     {
 241       vik_layer_rename ( l, new_text );
 242       vik_treeview_item_set_name ( vlp->vt, iter, l->name );
 243     }
 244   }
 245   else
 246   {
 247     const gchar *name = vik_layer_sublayer_rename_request ( vik_treeview_item_get_parent ( vlp->vt, iter ), new_text, vlp, vik_treeview_item_get_data ( vlp->vt, iter ), vik_treeview_item_get_pointer ( vlp->vt, iter ), iter );
 248     if ( name )
 249       vik_treeview_item_set_name ( vlp->vt, iter, name);
 250   }
 251 }
 252
 253 static gboolean layers_button_press_cb ( VikLayersPanel *vlp, GdkEventButton *event )
 254 {
 255   if (event->button == 3)
 256   {
 257     GtkTreeIter iter;
 258     if ( vik_treeview_get_iter_at_pos ( vlp->vt, &iter, event->x, event->y ) )
 259     {
 260       layers_popup ( vlp, &iter, 3 );
 261       vik_treeview_item_select ( vlp->vt, &iter );
 262     }
 263     else
 264       layers_popup ( vlp, NULL, 3 );
 265     return TRUE;
 266   }
 267   return FALSE;
 268 }
 269
 270 static void layers_popup ( VikLayersPanel *vlp, GtkTreeIter *iter, gint mouse_button )
 271 {
 272   GtkMenu *menu = NULL;
 273
 274
 275   if ( iter )
 276   {
 277     if ( vik_treeview_item_get_type ( vlp->vt, iter ) == VIK_TREEVIEW_TYPE_LAYER )
 278     {
 279       VikLayer *layer = VIK_LAYER(vik_treeview_item_get_pointer ( vlp->vt, iter ));
 280
 281       if ( layer->type == VIK_LAYER_AGGREGATE )
 282         menu = GTK_MENU(gtk_item_factory_get_widget ( vlp->popup_factory, "<main>" ));
 283       else
 284       {
 285         GtkWidget *del, *prop;
 286         VikStdLayerMenuItem menu_selection = vik_layer_get_menu_items_selection(layer);
 287
 288         menu = GTK_MENU ( gtk_menu_new () );
 289
 290         if (menu_selection & VIK_MENU_ITEM_PROPERTY) {
 291           prop = gtk_image_menu_item_new_from_stock ( GTK_STOCK_PROPERTIES, NULL );
 292           g_signal_connect_swapped ( G_OBJECT(prop), "activate", G_CALLBACK(vik_layers_panel_properties), vlp );
 293           gtk_menu_shell_append (GTK_MENU_SHELL (menu), prop);
 294           gtk_widget_show ( prop );
 295         }
 296
 297         if (menu_selection & VIK_MENU_ITEM_CUT) {
 298           del = gtk_image_menu_item_new_from_stock ( GTK_STOCK_CUT, NULL );
 299           g_signal_connect_swapped ( G_OBJECT(del), "activate", G_CALLBACK(vik_layers_panel_cut_selected), vlp );
 300           gtk_menu_shell_append (GTK_MENU_SHELL (menu), del);
 301           gtk_widget_show ( del );
 302         }
 303
 304         if (menu_selection & VIK_MENU_ITEM_COPY) {
 305           del = gtk_image_menu_item_new_from_stock ( GTK_STOCK_COPY, NULL );
 306           g_signal_connect_swapped ( G_OBJECT(del), "activate", G_CALLBACK(vik_layers_panel_copy_selected), vlp );
 307           gtk_menu_shell_append (GTK_MENU_SHELL (menu), del);
 308           gtk_widget_show ( del );
 309         }
 310
 311         if (menu_selection & VIK_MENU_ITEM_PASTE) {
 312           del = gtk_image_menu_item_new_from_stock ( GTK_STOCK_PASTE, NULL );
 313           g_signal_connect_swapped ( G_OBJECT(del), "activate", G_CALLBACK(vik_layers_panel_paste_selected), vlp );
 314           gtk_menu_shell_append (GTK_MENU_SHELL (menu), del);
 315           gtk_widget_show ( del );
 316         }
 317
 318         if (menu_selection & VIK_MENU_ITEM_DELETE) {
 319           del = gtk_image_menu_item_new_from_stock ( GTK_STOCK_DELETE, NULL );
 320           g_signal_connect_swapped ( G_OBJECT(del), "activate", G_CALLBACK(vik_layers_panel_delete_selected), vlp );
 321           gtk_menu_shell_append (GTK_MENU_SHELL (menu), del);
 322           gtk_widget_show ( del );
 323         }
 324
 325         vik_layer_add_menu_items ( layer, menu, vlp );
 326       }
 327     }
 328     else
 329     {
 330       menu = GTK_MENU ( gtk_menu_new () );
 331       if ( ! vik_layer_sublayer_add_menu_items ( vik_treeview_item_get_parent ( vlp->vt, iter ), menu, vlp, vik_treeview_item_get_data ( vlp->vt, iter ), vik_treeview_item_get_pointer ( vlp->vt, iter ), iter ) )
 332       {
 333         gtk_widget_destroy ( GTK_WIDGET(menu) );
 334         return;
 335       }
 336       /* TODO: specific things for different types */
 337     }
 338   }
 339   else
 340     menu = GTK_MENU(gtk_item_factory_get_widget ( vlp->popup_factory, base_entries[NUM_BASE_ENTRIES-1].path ));
 341   gtk_menu_popup ( menu, NULL, NULL, NULL, NULL, mouse_button, gtk_get_current_event_time() );
 342 }
 343
 344 static void layers_popup_cb ( VikLayersPanel *vlp )
 345 {
 346   GtkTreeIter iter;
 347   layers_popup ( vlp, vik_treeview_get_selected_iter ( vlp->vt, &iter ) ? &iter : NULL, 0 );
 348 }
 349
 350 gboolean vik_layers_panel_new_layer ( VikLayersPanel *vlp, gint type )
 351 {
 352   VikLayer *l;
 353   g_assert ( vlp->vvp );
 354   l = vik_layer_create ( type, vlp->vvp, VIK_GTK_WINDOW_FROM_WIDGET(vlp), TRUE );
 355   if ( l )
 356   {
 357     vik_layers_panel_add_layer ( vlp, l );
 358     vik_layers_panel_emit_update ( vlp );
 359     return TRUE;
 360   }
 361   return FALSE;
 362 }
 363
 364 void vik_layers_panel_add_layer ( VikLayersPanel *vlp, VikLayer *l )
 365 {
 366   GtkTreeIter iter;
 367   GtkTreeIter *replace_iter = NULL;
 368
 369   /* could be something different so we have to do this */
 370   vik_layer_change_coord_mode ( l, vik_viewport_get_coord_mode(vlp->vvp) );
 371
 372   if ( ! vik_treeview_get_selected_iter ( vlp->vt, &iter ) )
 373     vik_aggregate_layer_add_layer ( vlp->toplayer, l );
 374   else
 375   {
 376     VikAggregateLayer *addtoagg;
 377     if (vik_treeview_item_get_type ( vlp->vt, &iter ) == VIK_TREEVIEW_TYPE_LAYER )
 378     {
 379       if ( IS_VIK_AGGREGATE_LAYER(vik_treeview_item_get_pointer ( vlp->vt, &iter )) )
 380          addtoagg = VIK_AGGREGATE_LAYER(vik_treeview_item_get_pointer ( vlp->vt, &iter ));
 381       else {
 382        VikLayer *vl = VIK_LAYER(vik_treeview_item_get_parent ( vlp->vt, &iter ));
 383        while ( ! IS_VIK_AGGREGATE_LAYER(vl) ) {
 384          iter = vl->iter;
 385          vl = VIK_LAYER(vik_treeview_item_get_parent ( vlp->vt, &vl->iter ));
 386          g_assert ( vl->realized );
 387        }
 388        addtoagg = VIK_AGGREGATE_LAYER(vl);
 389        replace_iter = &iter;
 390       }
 391     }
 392     else
 393     {
 394       /* a sublayer is selected, first get its parent (layer), then find the layer's parent (aggr. layer) */
 395       VikLayer *vl = VIK_LAYER(vik_treeview_item_get_parent ( vlp->vt, &iter ));
 396       replace_iter = &(vl->iter);
 397       g_assert ( vl->realized );
 398       VikLayer *grandpa = (vik_treeview_item_get_parent ( vlp->vt, &(vl->iter) ) );
 399       if (IS_VIK_AGGREGATE_LAYER(grandpa))
 400         addtoagg = VIK_AGGREGATE_LAYER(grandpa);
 401       else {
 402         addtoagg = vlp->toplayer;
 403         replace_iter = &grandpa->iter;
 404       }
 405     }
 406     if ( replace_iter )
 407       vik_aggregate_layer_insert_layer ( addtoagg, l, replace_iter );
 408     else
 409       vik_aggregate_layer_add_layer ( addtoagg, l );
 410   }
 411 }
 412
 413 static void layers_move_item ( VikLayersPanel *vlp, gboolean up )
 414 {
 415   GtkTreeIter iter;
 416   VikAggregateLayer *parent;
 417
 418   /* TODO: deactivate the buttons and stuff */
 419   if ( ! vik_treeview_get_selected_iter ( vlp->vt, &iter ) )
 420     return;
 421
 422   vik_treeview_select_iter ( vlp->vt, &iter ); /* cancel any layer-name editing going on... */
 423
 424   if ( vik_treeview_item_get_type ( vlp->vt, &iter ) == VIK_TREEVIEW_TYPE_LAYER )
 425   {
 426     parent = VIK_AGGREGATE_LAYER(vik_treeview_item_get_parent ( vlp->vt, &iter ));
 427     if ( parent ) /* not toplevel */
 428     {
 429       vik_aggregate_layer_move_layer ( parent, &iter, up );
 430       vik_layers_panel_emit_update ( vlp );
 431     }
 432   }
 433 }
 434
 435 gboolean vik_layers_panel_properties ( VikLayersPanel *vlp )
 436 {
 437   GtkTreeIter iter;
 438   g_assert ( vlp->vvp );
 439
 440   if ( vik_treeview_get_selected_iter ( vlp->vt, &iter ) && vik_treeview_item_get_type ( vlp->vt, &iter ) == VIK_TREEVIEW_TYPE_LAYER )
 441   {
 442     if ( vik_treeview_item_get_data ( vlp->vt, &iter ) == VIK_LAYER_AGGREGATE )
 443       a_dialog_info_msg ( VIK_GTK_WINDOW_FROM_WIDGET(vlp), _("Aggregate Layers have no settable properties.") );
 444     vik_layer_properties ( VIK_LAYER( vik_treeview_item_get_pointer ( vlp->vt, &iter ) ), vlp->vvp );
 445     return TRUE;
 446   }
 447   else
 448     return FALSE;
 449 }
 450
 451 void vik_layers_panel_draw_all ( VikLayersPanel *vlp )
 452 {
 453   if ( vlp->vvp && VIK_LAYER(vlp->toplayer)->visible )
 454     vik_aggregate_layer_draw ( vlp->toplayer, vlp->vvp );
 455 }
 456
 457 void vik_layers_panel_draw_all_using_viewport ( VikLayersPanel *vlp, VikViewport *vvp )
 458 {
 459   if ( vlp->vvp && VIK_LAYER(vlp->toplayer)->visible )
 460     vik_aggregate_layer_draw ( vlp->toplayer, vvp );
 461 }
 462
 463 void vik_layers_panel_cut_selected ( VikLayersPanel *vlp )
 464 {
 465   gint type;
 466   GtkTreeIter iter;
 467
 468   g_return_if_fail ( vik_treeview_get_selected_iter ( vlp->vt, &iter ) );
 469
 470   type = vik_treeview_item_get_type ( vlp->vt, &iter );
 471
 472   if ( type == VIK_TREEVIEW_TYPE_LAYER )
 473   {
 474     VikAggregateLayer *parent = vik_treeview_item_get_parent ( vlp->vt, &iter );
 475
 476     if ( parent )
 477     {
 478
 479       /* reset trigger if trigger deleted */
 480       if ( vik_layers_panel_get_selected ( vlp ) == vik_viewport_get_trigger ( vlp->vvp ) )
 481         vik_viewport_set_trigger ( vlp->vvp, NULL );
 482
 483       a_clipboard_copy_selected ( vlp );
 484       if ( vik_aggregate_layer_delete ( parent, &iter ) )
 485         vik_layers_panel_emit_update ( vlp );
 486     }
 487     else
 488       a_dialog_info_msg ( VIK_GTK_WINDOW_FROM_WIDGET(vlp), _("You cannot cut the Top Layer.") );
 489   }
 490 }
 491
 492 void vik_layers_panel_copy_selected ( VikLayersPanel *vlp )
 493 {
 494   gint type;
 495   GtkTreeIter iter;
 496
 497   g_return_if_fail ( vik_treeview_get_selected_iter ( vlp->vt, &iter ) );
 498
 499   type = vik_treeview_item_get_type ( vlp->vt, &iter );
 500
 501   if ( type == VIK_TREEVIEW_TYPE_LAYER ) {
 502     a_clipboard_copy_selected ( vlp );
 503   }
 504 }
 505
 506 void vik_layers_panel_paste_selected ( VikLayersPanel *vlp )
 507 {
 508   GtkTreeIter iter;
 509   g_return_if_fail ( vik_treeview_get_selected_iter ( vlp->vt, &iter ) );
 510   a_clipboard_paste ( vlp );
 511 }
 512
 513 void vik_layers_panel_delete_selected ( VikLayersPanel *vlp )
 514 {
 515   gint type;
 516   GtkTreeIter iter;
 517
 518   g_return_if_fail ( vik_treeview_get_selected_iter ( vlp->vt, &iter ) );
 519
 520   type = vik_treeview_item_get_type ( vlp->vt, &iter );
 521
 522   if ( type == VIK_TREEVIEW_TYPE_LAYER )
 523   {
 524     VikAggregateLayer *parent = vik_treeview_item_get_parent ( vlp->vt, &iter );
 525     if ( parent )
 526     {
 527       /* reset trigger if trigger deleted */
 528       if ( vik_layers_panel_get_selected ( vlp ) == vik_viewport_get_trigger ( vlp->vvp ) )
 529         vik_viewport_set_trigger ( vlp->vvp, NULL );
 530
 531       if (IS_VIK_AGGREGATE_LAYER(parent)) {
 532         if ( vik_aggregate_layer_delete ( parent, &iter ) )
 533           vik_layers_panel_emit_update ( vlp );
 534       }
 535     }
 536     else
 537       a_dialog_info_msg ( VIK_GTK_WINDOW_FROM_WIDGET(vlp), _("You cannot delete the Top Layer.") );
 538   }
 539   else if (type == VIK_TREEVIEW_TYPE_SUBLAYER) {
 540     VikLayer *sel = vik_layers_panel_get_selected ( vlp );
 541     if ( vik_layer_get_interface(sel->type)->delete_item ) {
 542       gint subtype = vik_treeview_item_get_data( vlp->vt, &iter);
 543       vik_layer_get_interface(sel->type)->delete_item ( sel, subtype, vik_treeview_item_get_pointer(sel->vt, &iter) );
 544     }
 545   }
 546 }
 547
 548 VikLayer *vik_layers_panel_get_selected ( VikLayersPanel *vlp )
 549 {
 550   GtkTreeIter iter, parent;
 551   gint type;
 552
 553   if ( ! vik_treeview_get_selected_iter ( vlp->vt, &iter ) )
 554     return NULL;
 555
 556   type = vik_treeview_item_get_type ( vlp->vt, &iter );
 557
 558   while ( type != VIK_TREEVIEW_TYPE_LAYER )
 559   {
 560     if ( ! vik_treeview_item_get_parent_iter ( vlp->vt, &iter, &parent ) )
 561       return NULL;
 562     iter = parent;
 563     type = vik_treeview_item_get_type ( vlp->vt, &iter );
 564   }
 565
 566   return VIK_LAYER( vik_treeview_item_get_pointer ( vlp->vt, &iter ) );
 567 }
 568
 569 static void layers_move_item_up ( VikLayersPanel *vlp )
 570 {
 571   layers_move_item ( vlp, TRUE );
 572 }
 573
 574 static void layers_move_item_down ( VikLayersPanel *vlp )
 575 {
 576   layers_move_item ( vlp, FALSE );
 577 }
 578
 579 #if 0
 580 gboolean vik_layers_panel_tool ( VikLayersPanel *vlp, guint16 layer_type, VikToolInterfaceFunc tool_func, GdkEventButton *event, VikViewport *vvp )
 581 {
 582   VikLayer *vl = vik_layers_panel_get_selected ( vlp );
 583   if ( vl && vl->type == layer_type )
 584   {
 585     tool_func ( vl, event, vvp );
 586     return TRUE;
 587   }
 588   else if ( VIK_LAYER(vlp->toplayer)->visible &&
 589       vik_aggregate_layer_tool ( vlp->toplayer, layer_type, tool_func, event, vvp ) != 1 ) /* either accepted or rejected, but a layer was found */
 590     return TRUE;
 591   return FALSE;
 592 }
 593 #endif
 594
 595 VikLayer *vik_layers_panel_get_layer_of_type ( VikLayersPanel *vlp, gint type )
 596 {
 597   VikLayer *rv = vik_layers_panel_get_selected ( vlp );
 598   if ( rv == NULL || rv->type != type )
 599     if ( VIK_LAYER(vlp->toplayer)->visible )
 600       return vik_aggregate_layer_get_top_visible_layer_of_type ( vlp->toplayer, type );
 601     else
 602       return NULL;
 603   else
 604     return rv;
 605 }
 606
 607 GList *vik_layers_panel_get_all_layers_of_type(VikLayersPanel *vlp, gint type)
 608 {
 609   GList *layers = NULL;
 610
 611   return (vik_aggregate_layer_get_all_layers_of_type ( vlp->toplayer, layers, type ));
 612 }
 613
 614 VikAggregateLayer *vik_layers_panel_get_top_layer ( VikLayersPanel *vlp )
 615 {
 616   return vlp->toplayer;
 617 }
 618
 619 void vik_layers_panel_clear ( VikLayersPanel *vlp )
 620 {
 621   if ( (! vik_aggregate_layer_is_empty(vlp->toplayer)) && a_dialog_overwrite ( VIK_GTK_WINDOW_FROM_WIDGET(vlp), _("Are you sure you wish to delete all layers?"), NULL ) )
 622     vik_aggregate_layer_clear ( vlp->toplayer ); /* simply deletes all layers */
 623 }
 624
 625 void vik_layers_panel_change_coord_mode ( VikLayersPanel *vlp, VikCoordMode mode )
 626 {
 627   vik_layer_change_coord_mode ( VIK_LAYER(vlp->toplayer), mode );
 628 }
 629
 630 static void layers_panel_finalize ( GObject *gob )
 631 {
 632   VikLayersPanel *vlp = VIK_LAYERS_PANEL ( gob );
 633   g_object_unref ( VIK_LAYER(vlp->toplayer) );
 634   g_object_unref ( G_OBJECT(vlp->popup_factory) );
 635   G_OBJECT_CLASS(parent_class)->finalize(gob);
 636 }
 637