C++ (Cpp) vik_aggregate_layer_tool Examples

Example #1

File: vikaggregatelayer.c Project: gdt/viking

/* returns 0 == we're good, 1 == didn't find any layers, 2 == got rejected */
guint vik_aggregate_layer_tool ( VikAggregateLayer *val, VikLayerTypeEnum layer_type, VikToolInterfaceFunc tool_func, GdkEventButton *event, VikViewport *vvp )
{
  GList *iter = val->children;
  gboolean found_rej = FALSE;
  if (!iter)
    return FALSE;
  while (iter->next)
    iter = iter->next;

  while ( iter )
  {
    /* if this layer "accepts" the tool call */
    if ( VIK_LAYER(iter->data)->visible && VIK_LAYER(iter->data)->type == layer_type )
    {
      if ( tool_func ( VIK_LAYER(iter->data), event, vvp ) )
        return 0;
      else
        found_rej = TRUE;
    }

    /* recursive -- try the same for the child aggregate layer. */
    else if ( VIK_LAYER(iter->data)->visible && VIK_LAYER(iter->data)->type == VIK_LAYER_AGGREGATE )
    {
      gint rv = vik_aggregate_layer_tool(VIK_AGGREGATE_LAYER(iter->data), layer_type, tool_func, event, vvp);
      if ( rv == 0 )
        return 0;
      else if ( rv == 2 )
        found_rej = TRUE;
    }
    iter = iter->prev;
  }
  return found_rej ? 2 : 1; /* no one wanted to accept the tool call in this layer */
}

Example #2

File: viklayerspanel.c Project: evanbattaglia/viking

gboolean vik_layers_panel_tool ( VikLayersPanel *vlp, guint16 layer_type, VikToolInterfaceFunc tool_func, GdkEventButton *event, VikViewport *vvp )
{
  VikLayer *vl = vik_layers_panel_get_selected ( vlp );
  if ( vl && vl->type == layer_type )
  {
    tool_func ( vl, event, vvp );
    return TRUE;
  }
  else if ( VIK_LAYER(vlp->toplayer)->visible &&
      vik_aggregate_layer_tool ( vlp->toplayer, layer_type, tool_func, event, vvp ) != 1 ) /* either accepted or rejected, but a layer was found */
    return TRUE;
  return FALSE;
}