Example #1
0
static void
gimp_filter_stack_remove_node (GimpFilterStack *stack,
                               GimpFilter      *filter)
{
  GimpFilter *filter_below;
  GeglNode   *node_above;
  GeglNode   *node_below;
  GeglNode   *node;
  gint        index;

  node = gimp_filter_get_node (filter);

  gegl_node_disconnect (node, "input");

  index = gimp_container_get_child_index (GIMP_CONTAINER (stack),
                                          GIMP_OBJECT (filter));

  if (index == 0)
    {
      node_above = gegl_node_get_output_proxy (stack->graph, "output");
    }
  else
    {
      GimpFilter *filter_above = (GimpFilter *)
        gimp_container_get_child_by_index (GIMP_CONTAINER (stack), index - 1);

      node_above = gimp_filter_get_node (filter_above);
    }

  filter_below = (GimpFilter *)
    gimp_container_get_child_by_index (GIMP_CONTAINER (stack), index + 1);

  if (filter_below)
    {
      node_below = gimp_filter_get_node (filter_below);
    }
  else
    {
      node_below = gegl_node_get_input_proxy (stack->graph, "input");
    }

  gegl_node_connect_to (node_below, "output",
                        node_above, "input");
}
Example #2
0
void
windows_show_display_previous_cmd_callback (GtkAction *action,
                                            gpointer   data)
{
  GimpDisplay *display;
  Gimp        *gimp;
  gint         index;
  return_if_no_display (display, data);
  return_if_no_gimp (gimp, data);

  index = gimp_container_get_child_index (gimp->displays,
                                          GIMP_OBJECT (display));
  index--;

  if (index < 0)
    index = gimp_container_get_n_children (gimp->displays) - 1;

  display = GIMP_DISPLAY (gimp_container_get_child_by_index (gimp->displays,
                                                             index));
  gimp_display_shell_present (gimp_display_get_shell (display));
}
Example #3
0
void
tools_lower_cmd_callback (GtkAction *action,
                          gpointer   data)
{
  GimpContext  *context;
  GimpToolInfo *tool_info;
  return_if_no_context (context, data);

  tool_info = gimp_context_get_tool (context);

  if (tool_info)
    {
      GimpContainer *container;
      gint           index;

      container = context->gimp->tool_info_list;
      index     = gimp_container_get_child_index (container,
                                                  GIMP_OBJECT (tool_info));

      if (index + 1 < gimp_container_num_children (container))
        gimp_container_reorder (container, GIMP_OBJECT (tool_info), index + 1);
    }
}
Example #4
0
static GimpLayer *
gimp_image_merge_layers (GimpImage     *image,
                         GSList        *merge_list,
                         GimpContext   *context,
                         GimpMergeType  merge_type,
                         const gchar   *undo_desc)
{
  GList           *list;
  GSList          *reverse_list = NULL;
  PixelRegion      src1PR, src2PR, maskPR;
  PixelRegion     *mask;
  GimpLayer       *merge_layer;
  GimpLayer       *layer;
  GimpLayer       *bottom_layer;
  GimpImageType    type;
  gint             count;
  gint             x1, y1, x2, y2;
  gint             x3, y3, x4, y4;
  CombinationMode  operation;
  gint             position;
  gboolean         active[MAX_CHANNELS] = { TRUE, TRUE, TRUE, TRUE };
  gint             off_x, off_y;
  gchar           *name;

  g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
  g_return_val_if_fail (GIMP_IS_CONTEXT (context), NULL);

  layer        = NULL;
  type         = GIMP_RGBA_IMAGE;
  x1 = y1      = 0;
  x2 = y2      = 0;
  bottom_layer = NULL;

  /*  Get the layer extents  */
  count = 0;
  while (merge_list)
    {
      layer = merge_list->data;

      gimp_item_offsets (GIMP_ITEM (layer), &off_x, &off_y);

      switch (merge_type)
        {
        case GIMP_EXPAND_AS_NECESSARY:
        case GIMP_CLIP_TO_IMAGE:
          if (! count)
            {
              x1 = off_x;
              y1 = off_y;
              x2 = off_x + gimp_item_width  (GIMP_ITEM (layer));
              y2 = off_y + gimp_item_height (GIMP_ITEM (layer));
            }
          else
            {
              if (off_x < x1)
                x1 = off_x;
              if (off_y < y1)
                y1 = off_y;
              if ((off_x + gimp_item_width (GIMP_ITEM (layer))) > x2)
                x2 = (off_x + gimp_item_width (GIMP_ITEM (layer)));
              if ((off_y + gimp_item_height (GIMP_ITEM (layer))) > y2)
                y2 = (off_y + gimp_item_height (GIMP_ITEM (layer)));
            }

          if (merge_type == GIMP_CLIP_TO_IMAGE)
            {
              x1 = CLAMP (x1, 0, gimp_image_get_width  (image));
              y1 = CLAMP (y1, 0, gimp_image_get_height (image));
              x2 = CLAMP (x2, 0, gimp_image_get_width  (image));
              y2 = CLAMP (y2, 0, gimp_image_get_height (image));
            }
          break;

        case GIMP_CLIP_TO_BOTTOM_LAYER:
          if (merge_list->next == NULL)
            {
              x1 = off_x;
              y1 = off_y;
              x2 = off_x + gimp_item_width (GIMP_ITEM (layer));
              y2 = off_y + gimp_item_height (GIMP_ITEM (layer));
            }
          break;

        case GIMP_FLATTEN_IMAGE:
          if (merge_list->next == NULL)
            {
              x1 = 0;
              y1 = 0;
              x2 = gimp_image_get_width  (image);
              y2 = gimp_image_get_height (image);
            }
          break;
        }

      count ++;
      reverse_list = g_slist_prepend (reverse_list, layer);
      merge_list = g_slist_next (merge_list);
    }

  if ((x2 - x1) == 0 || (y2 - y1) == 0)
    return NULL;

  /*  Start a merge undo group. */

  gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_IMAGE_LAYERS_MERGE,
                               undo_desc);

  name = g_strdup (gimp_object_get_name (GIMP_OBJECT (layer)));

  if (merge_type == GIMP_FLATTEN_IMAGE ||
      gimp_drawable_type (GIMP_DRAWABLE (layer)) == GIMP_INDEXED_IMAGE)
    {
      guchar bg[4] = { 0, 0, 0, 0 };

      type = GIMP_IMAGE_TYPE_FROM_BASE_TYPE (gimp_image_base_type (image));

      merge_layer = gimp_layer_new (image, (x2 - x1), (y2 - y1),
                                    type,
                                    gimp_object_get_name (GIMP_OBJECT (layer)),
                                    GIMP_OPACITY_OPAQUE, GIMP_NORMAL_MODE);
      if (! merge_layer)
        {
          g_warning ("%s: could not allocate merge layer.", G_STRFUNC);
          return NULL;
        }

      GIMP_ITEM (merge_layer)->offset_x = x1;
      GIMP_ITEM (merge_layer)->offset_y = y1;

      /*  get the background for compositing  */
      gimp_image_get_background (image, context,
                                 gimp_drawable_type (GIMP_DRAWABLE (merge_layer)),
                                 bg);

      /*  init the pixel region  */
      pixel_region_init (&src1PR,
                         gimp_drawable_get_tiles (GIMP_DRAWABLE (merge_layer)),
                         0, 0, (x2 - x1), (y2 - y1),
                         TRUE);

      /*  set the region to the background color  */
      color_region (&src1PR, bg);

      position = 0;
    }
  else
    {
      /*  The final merged layer inherits the name of the bottom most layer
       *  and the resulting layer has an alpha channel whether or not the
       *  original did. Opacity is set to 100% and the MODE is set to normal.
       */

      merge_layer =
        gimp_layer_new (image, (x2 - x1), (y2 - y1),
                        gimp_drawable_type_with_alpha (GIMP_DRAWABLE (layer)),
                        "merged layer",
                        GIMP_OPACITY_OPAQUE, GIMP_NORMAL_MODE);

      if (!merge_layer)
        {
          g_warning ("%s: could not allocate merge layer", G_STRFUNC);
          return NULL;
        }

      GIMP_ITEM (merge_layer)->offset_x = x1;
      GIMP_ITEM (merge_layer)->offset_y = y1;

      /*  clear the layer  */
      pixel_region_init (&src1PR,
                         gimp_drawable_get_tiles (GIMP_DRAWABLE (merge_layer)),
                         0, 0,
                         (x2 - x1), (y2 - y1),
                         TRUE);
      clear_region (&src1PR);

      /*  Find the index in the layer list of the bottom layer--we need this
       *  in order to add the final, merged layer to the layer list correctly
       */
      layer = reverse_list->data;
      position =
        gimp_container_num_children (image->layers) -
        gimp_container_get_child_index (image->layers, GIMP_OBJECT (layer));
    }

  bottom_layer = layer;

  /* Copy the tattoo and parasites of the bottom layer to the new layer */
  gimp_item_set_tattoo (GIMP_ITEM (merge_layer),
                        gimp_item_get_tattoo (GIMP_ITEM (bottom_layer)));

  g_object_unref (GIMP_ITEM (merge_layer)->parasites);
  GIMP_ITEM (merge_layer)->parasites =
    gimp_parasite_list_copy (GIMP_ITEM (bottom_layer)->parasites);

  while (reverse_list)
    {
      GimpLayerModeEffects  mode;

      layer = reverse_list->data;

      /*  determine what sort of operation is being attempted and
       *  if it's actually legal...
       */
      operation = gimp_image_merge_layers_get_operation (merge_layer, layer);

      if (operation == -1)
        {
          gimp_layer_add_alpha (layer);

          /*  try again ...  */
          operation = gimp_image_merge_layers_get_operation (merge_layer,
                                                             layer);
        }

      if (operation == -1)
        {
          g_warning ("%s: attempting to merge incompatible layers.", G_STRFUNC);
          return NULL;
        }

      gimp_item_offsets (GIMP_ITEM (layer), &off_x, &off_y);

      x3 = CLAMP (off_x, x1, x2);
      y3 = CLAMP (off_y, y1, y2);
      x4 = CLAMP (off_x + gimp_item_width  (GIMP_ITEM (layer)), x1, x2);
      y4 = CLAMP (off_y + gimp_item_height (GIMP_ITEM (layer)), y1, y2);

      /* configure the pixel regions  */
      pixel_region_init (&src1PR,
                         gimp_drawable_get_tiles (GIMP_DRAWABLE (merge_layer)),
                         (x3 - x1), (y3 - y1), (x4 - x3), (y4 - y3),
                         TRUE);
      pixel_region_init (&src2PR,
                         gimp_drawable_get_tiles (GIMP_DRAWABLE (layer)),
                         (x3 - off_x), (y3 - off_y),
                         (x4 - x3), (y4 - y3),
                         FALSE);

      if (gimp_layer_get_mask (layer) &&
          gimp_layer_mask_get_apply (layer->mask))
        {
          TileManager *tiles;

          tiles = gimp_drawable_get_tiles (GIMP_DRAWABLE (layer->mask));

          pixel_region_init (&maskPR, tiles,
                             (x3 - off_x), (y3 - off_y), (x4 - x3), (y4 - y3),
                             FALSE);
          mask = &maskPR;
        }
      else
        {
          mask = NULL;
        }

      /* DISSOLVE_MODE is special since it is the only mode that does not
       *  work on the projection with the lower layer, but only locally on
       *  the layers alpha channel.
       */
      mode = gimp_layer_get_mode (layer);
      if (layer == bottom_layer && mode != GIMP_DISSOLVE_MODE)
        mode = GIMP_NORMAL_MODE;

      combine_regions (&src1PR, &src2PR, &src1PR, mask, NULL,
                       gimp_layer_get_opacity (layer) * 255.999,
                       mode,
                       active,
                       operation);

      gimp_image_remove_layer (image, layer);

      reverse_list = g_slist_next (reverse_list);
    }

  g_slist_free (reverse_list);

  /*  if the type is flatten, remove all the remaining layers  */
  if (merge_type == GIMP_FLATTEN_IMAGE)
    {
      list = GIMP_LIST (image->layers)->list;
      while (list)
        {
          layer = list->data;

          list = g_list_next (list);
          gimp_image_remove_layer (image, layer);
        }

      gimp_image_add_layer (image, merge_layer, position);
    }
  else
    {
      /*  Add the layer to the image  */
      gimp_image_add_layer (image, merge_layer,
         gimp_container_num_children (image->layers) - position + 1);
    }

  /* set the name after the original layers have been removed so we
   * don't end up with #2 appended to the name
   */
  gimp_object_take_name (GIMP_OBJECT (merge_layer), name);

  gimp_item_set_visible (GIMP_ITEM (merge_layer), TRUE, TRUE);

  /*  End the merge undo group  */
  gimp_image_undo_group_end (image);

  gimp_drawable_update (GIMP_DRAWABLE (merge_layer),
                        0, 0,
                        gimp_item_width  (GIMP_ITEM (merge_layer)),
                        gimp_item_height (GIMP_ITEM (merge_layer)));

  return merge_layer;
}
Example #5
0
static GimpLayer *
gimp_image_merge_layers (GimpImage     *image,
                         GimpContainer *container,
                         GSList        *merge_list,
                         GimpContext   *context,
                         GimpMergeType  merge_type)
{
  GList            *list;
  GSList           *reverse_list = NULL;
  GSList           *layers;
  GimpLayer        *merge_layer;
  GimpLayer        *layer;
  GimpLayer        *bottom_layer;
  GimpParasiteList *parasites;
  gint              count;
  gint              x1, y1, x2, y2;
  gint              off_x, off_y;
  gint              position;
  gchar            *name;
  GimpLayer        *parent;

  g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
  g_return_val_if_fail (GIMP_IS_CONTEXT (context), NULL);

  layer        = NULL;
  x1 = y1      = 0;
  x2 = y2      = 0;
  bottom_layer = NULL;

  parent = gimp_layer_get_parent (merge_list->data);

  /*  Get the layer extents  */
  count = 0;
  while (merge_list)
    {
      layer = merge_list->data;

      gimp_item_get_offset (GIMP_ITEM (layer), &off_x, &off_y);

      switch (merge_type)
        {
        case GIMP_EXPAND_AS_NECESSARY:
        case GIMP_CLIP_TO_IMAGE:
          if (! count)
            {
              x1 = off_x;
              y1 = off_y;
              x2 = off_x + gimp_item_get_width  (GIMP_ITEM (layer));
              y2 = off_y + gimp_item_get_height (GIMP_ITEM (layer));
            }
          else
            {
              if (off_x < x1)
                x1 = off_x;
              if (off_y < y1)
                y1 = off_y;
              if ((off_x + gimp_item_get_width (GIMP_ITEM (layer))) > x2)
                x2 = (off_x + gimp_item_get_width (GIMP_ITEM (layer)));
              if ((off_y + gimp_item_get_height (GIMP_ITEM (layer))) > y2)
                y2 = (off_y + gimp_item_get_height (GIMP_ITEM (layer)));
            }

          if (merge_type == GIMP_CLIP_TO_IMAGE)
            {
              x1 = CLAMP (x1, 0, gimp_image_get_width  (image));
              y1 = CLAMP (y1, 0, gimp_image_get_height (image));
              x2 = CLAMP (x2, 0, gimp_image_get_width  (image));
              y2 = CLAMP (y2, 0, gimp_image_get_height (image));
            }
          break;

        case GIMP_CLIP_TO_BOTTOM_LAYER:
          if (merge_list->next == NULL)
            {
              x1 = off_x;
              y1 = off_y;
              x2 = off_x + gimp_item_get_width  (GIMP_ITEM (layer));
              y2 = off_y + gimp_item_get_height (GIMP_ITEM (layer));
            }
          break;

        case GIMP_FLATTEN_IMAGE:
          if (merge_list->next == NULL)
            {
              x1 = 0;
              y1 = 0;
              x2 = gimp_image_get_width  (image);
              y2 = gimp_image_get_height (image);
            }
          break;
        }

      count ++;
      reverse_list = g_slist_prepend (reverse_list, layer);
      merge_list = g_slist_next (merge_list);
    }

  if ((x2 - x1) == 0 || (y2 - y1) == 0)
    return NULL;

  /*  Start a merge undo group. */

  name = g_strdup (gimp_object_get_name (layer));

  if (merge_type == GIMP_FLATTEN_IMAGE ||
      (gimp_drawable_is_indexed (GIMP_DRAWABLE (layer)) &&
       ! gimp_drawable_has_alpha (GIMP_DRAWABLE (layer))))
    {
      GeglColor *color;
      GimpRGB    bg;

      merge_layer = gimp_layer_new (image, (x2 - x1), (y2 - y1),
                                    gimp_image_get_layer_format (image, FALSE),
                                    gimp_object_get_name (layer),
                                    GIMP_OPACITY_OPAQUE, GIMP_NORMAL_MODE);
      if (! merge_layer)
        {
          g_warning ("%s: could not allocate merge layer.", G_STRFUNC);
          return NULL;
        }

      gimp_item_set_offset (GIMP_ITEM (merge_layer), x1, y1);

      /*  get the background for compositing  */
      gimp_context_get_background (context, &bg);

      color = gimp_gegl_color_new (&bg);
      gegl_buffer_set_color (gimp_drawable_get_buffer (GIMP_DRAWABLE (merge_layer)),
                             GEGL_RECTANGLE(0,0,x2-x1,y2-y1), color);
      g_object_unref (color);

      position = 0;
    }
  else
    {
      /*  The final merged layer inherits the name of the bottom most layer
       *  and the resulting layer has an alpha channel whether or not the
       *  original did. Opacity is set to 100% and the MODE is set to normal.
       */

      merge_layer =
        gimp_layer_new (image, (x2 - x1), (y2 - y1),
                        gimp_drawable_get_format_with_alpha (GIMP_DRAWABLE (layer)),
                        "merged layer",
                        GIMP_OPACITY_OPAQUE, GIMP_NORMAL_MODE);

      if (!merge_layer)
        {
          g_warning ("%s: could not allocate merge layer", G_STRFUNC);
          return NULL;
        }

      gimp_item_set_offset (GIMP_ITEM (merge_layer), x1, y1);

      /*  clear the layer  */
      gegl_buffer_clear (gimp_drawable_get_buffer (GIMP_DRAWABLE (merge_layer)),
                         NULL);

      /*  Find the index in the layer list of the bottom layer--we need this
       *  in order to add the final, merged layer to the layer list correctly
       */
      layer = reverse_list->data;
      position =
        gimp_container_get_n_children (container) -
        gimp_container_get_child_index (container, GIMP_OBJECT (layer));
    }

  bottom_layer = layer;

  /* Copy the tattoo and parasites of the bottom layer to the new layer */
  gimp_item_set_tattoo (GIMP_ITEM (merge_layer),
                        gimp_item_get_tattoo (GIMP_ITEM (bottom_layer)));

  parasites = gimp_item_get_parasites (GIMP_ITEM (bottom_layer));
  parasites = gimp_parasite_list_copy (parasites);
  gimp_item_set_parasites (GIMP_ITEM (merge_layer), parasites);
  g_object_unref (parasites);

  for (layers = reverse_list; layers; layers = g_slist_next (layers))
    {
      GeglBuffer           *merge_buffer;
      GeglBuffer           *layer_buffer;
      GimpApplicator       *applicator;
      GimpLayerModeEffects  mode;

      layer = layers->data;

      gimp_item_get_offset (GIMP_ITEM (layer), &off_x, &off_y);

      /* DISSOLVE_MODE is special since it is the only mode that does not
       *  work on the projection with the lower layer, but only locally on
       *  the layers alpha channel.
       */
      mode = gimp_layer_get_mode (layer);
      if (layer == bottom_layer && mode != GIMP_DISSOLVE_MODE)
        mode = GIMP_NORMAL_MODE;

      merge_buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (merge_layer));
      layer_buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (layer));

      applicator =
        gimp_applicator_new (NULL,
                             gimp_drawable_get_linear (GIMP_DRAWABLE (layer)),
                             FALSE, FALSE);

      if (gimp_layer_get_mask (layer) &&
          gimp_layer_get_apply_mask (layer))
        {
          GeglBuffer *mask_buffer;

          mask_buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (layer->mask));

          gimp_applicator_set_mask_buffer (applicator, mask_buffer);
          gimp_applicator_set_mask_offset (applicator,
                                           - (x1 - off_x),
                                           - (y1 - off_y));
        }

      gimp_applicator_set_src_buffer (applicator, merge_buffer);
      gimp_applicator_set_dest_buffer (applicator, merge_buffer);

      gimp_applicator_set_apply_buffer (applicator, layer_buffer);
      gimp_applicator_set_apply_offset (applicator,
                                        - (x1 - off_x),
                                        - (y1 - off_y));

      gimp_applicator_set_mode (applicator,
                                gimp_layer_get_opacity (layer),
                                mode);

      gimp_applicator_blit (applicator,
                            GEGL_RECTANGLE (0, 0,
                                            gegl_buffer_get_width  (merge_buffer),
                                            gegl_buffer_get_height (merge_buffer)));

      g_object_unref (applicator);

      gimp_image_remove_layer (image, layer, TRUE, NULL);
    }

  g_slist_free (reverse_list);

  gimp_object_take_name (GIMP_OBJECT (merge_layer), name);
  gimp_item_set_visible (GIMP_ITEM (merge_layer), TRUE, FALSE);

  /*  if the type is flatten, remove all the remaining layers  */
  if (merge_type == GIMP_FLATTEN_IMAGE)
    {
      list = gimp_image_get_layer_iter (image);
      while (list)
        {
          layer = list->data;

          list = g_list_next (list);
          gimp_image_remove_layer (image, layer, TRUE, NULL);
        }

      gimp_image_add_layer (image, merge_layer, parent,
                            position, TRUE);
    }
  else
    {
      /*  Add the layer to the image  */

      gimp_image_add_layer (image, merge_layer, parent,
                            gimp_container_get_n_children (container) -
                            position + 1,
                            TRUE);
    }

  gimp_drawable_update (GIMP_DRAWABLE (merge_layer),
                        0, 0,
                        gimp_item_get_width  (GIMP_ITEM (merge_layer)),
                        gimp_item_get_height (GIMP_ITEM (merge_layer)));

  return merge_layer;
}
gboolean
gimp_container_tree_view_real_drop_possible (GimpContainerTreeView   *tree_view,
                                             GimpDndType              src_type,
                                             GimpViewable            *src_viewable,
                                             GimpViewable            *dest_viewable,
                                             GtkTreePath             *drop_path,
                                             GtkTreeViewDropPosition  drop_pos,
                                             GtkTreeViewDropPosition *return_drop_pos,
                                             GdkDragAction           *return_drag_action)
{
  GimpContainerView *view           = GIMP_CONTAINER_VIEW (tree_view);
  GimpContainer     *container      = gimp_container_view_get_container (view);
  GimpContainer     *src_container  = NULL;
  GimpContainer     *dest_container = NULL;
  gint               src_index      = -1;
  gint               dest_index     = -1;

  if (src_viewable)
    {
      GimpViewable *parent = gimp_viewable_get_parent (src_viewable);

      if (parent)
        src_container = gimp_viewable_get_children (parent);
      else if (gimp_container_have (container, GIMP_OBJECT (src_viewable)))
        src_container = container;

      if (src_container)
        src_index = gimp_container_get_child_index (src_container,
                                                    GIMP_OBJECT (src_viewable));
    }

  if (dest_viewable)
    {
      GimpViewable *parent;

      /*  dropping on the lower third of a group item drops into that group  */
      if (drop_pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER &&
          gimp_viewable_get_children (dest_viewable))
        {
          parent = dest_viewable;
        }
      else
        {
          parent = gimp_viewable_get_parent (dest_viewable);
        }

      if (parent)
        dest_container = gimp_viewable_get_children (parent);
      else if (gimp_container_have (container, GIMP_OBJECT (dest_viewable)))
        dest_container = container;

      if (parent == dest_viewable)
        dest_index = 0;
      else
        dest_index = gimp_container_get_child_index (dest_container,
                                                     GIMP_OBJECT (dest_viewable));
    }

  if (src_viewable && g_type_is_a (G_TYPE_FROM_INSTANCE (src_viewable),
                                   gimp_container_get_children_type (container)))
    {
      if (src_viewable == dest_viewable)
        return FALSE;

      if (src_index == -1 || dest_index == -1)
        return FALSE;

      /*  don't allow dropping a parent node onto one of its descendants
       */
      if (gimp_viewable_is_ancestor (src_viewable, dest_viewable))
        return FALSE;
    }

  if (src_container == dest_container)
    {
      if (drop_pos == GTK_TREE_VIEW_DROP_BEFORE)
        {
          if (dest_index == (src_index + 1))
            return FALSE;
        }
      else if (drop_pos == GTK_TREE_VIEW_DROP_AFTER)
        {
          if (dest_index == (src_index - 1))
            return FALSE;
        }
    }

  if (return_drop_pos)
    *return_drop_pos = drop_pos;

  if (return_drag_action)
    {
      if (src_viewable && g_type_is_a (G_TYPE_FROM_INSTANCE (src_viewable),
                                       gimp_container_get_children_type (container)))
        *return_drag_action = GDK_ACTION_MOVE;
      else
        *return_drag_action = GDK_ACTION_COPY;
    }

  return TRUE;
}
static void
gimp_container_grid_view_highlight_item (GimpContainerView *container_view,
                                         GimpViewable      *viewable,
                                         gpointer           insert_data)
{
  GimpContainerGridView *grid_view = GIMP_CONTAINER_GRID_VIEW (container_view);
  GimpContainerBox      *box       = GIMP_CONTAINER_BOX (container_view);
  GimpContainer         *container;
  GimpView              *view      = NULL;

  container = gimp_container_view_get_container (container_view);

  if (insert_data)
    view = GIMP_VIEW (insert_data);

  if (grid_view->selected_item && grid_view->selected_item != view)
    {
      gimp_view_renderer_set_border_type (grid_view->selected_item->renderer,
                                          GIMP_VIEW_BORDER_WHITE);
      gimp_view_renderer_update (grid_view->selected_item->renderer);
    }

  if (view)
    {
      GtkRequisition  view_requisition;
      GtkAdjustment  *adj;
      gint            item_height;
      gint            index;
      gint            row;
      gchar          *name;

      adj = gtk_scrolled_window_get_vadjustment
        (GTK_SCROLLED_WINDOW (box->scrolled_win));

      gtk_widget_size_request (GTK_WIDGET (view), &view_requisition);

      item_height = view_requisition.height;

      index = gimp_container_get_child_index (container,
                                              GIMP_OBJECT (viewable));

      row = index / grid_view->columns;

      if (row * item_height < gtk_adjustment_get_value (adj))
        {
          gtk_adjustment_set_value (adj, row * item_height);
        }
      else if ((row + 1) * item_height > (gtk_adjustment_get_value (adj) +
                                          gtk_adjustment_get_page_size (adj)))
        {
          gtk_adjustment_set_value (adj,
                                    (row + 1) * item_height -
                                    gtk_adjustment_get_page_size (adj));
        }

      gimp_view_renderer_set_border_type (view->renderer,
                                          GIMP_VIEW_BORDER_BLACK);
      gimp_view_renderer_update (view->renderer);

      name = gimp_viewable_get_description (view->renderer->viewable, NULL);
      gimp_editor_set_name (GIMP_EDITOR (grid_view), name);
      g_free (name);
    }
  else
    {
      gimp_editor_set_name (GIMP_EDITOR (grid_view), NULL);
    }

  grid_view->selected_item = view;
}
gboolean
gimp_container_tree_view_real_drop_possible (GimpContainerTreeView   *tree_view,
                                             GimpDndType              src_type,
                                             GimpViewable            *src_viewable,
                                             GimpViewable            *dest_viewable,
                                             GtkTreeViewDropPosition  drop_pos,
                                             GtkTreeViewDropPosition *return_drop_pos,
                                             GdkDragAction           *return_drag_action)
{
  GimpContainerView *view       = GIMP_CONTAINER_VIEW (tree_view);
  GimpContainer     *container  = gimp_container_view_get_container (view);
  gint               src_index  = -1;
  gint               dest_index = -1;

  if (src_viewable && g_type_is_a (G_TYPE_FROM_INSTANCE (src_viewable),
                                   container->children_type))
    {
      if (src_viewable == dest_viewable)
        return FALSE;

      src_index = gimp_container_get_child_index (container,
                                                  GIMP_OBJECT (src_viewable));

      if (src_index == -1)
        return FALSE;

      if (dest_viewable)
        {
          dest_index = gimp_container_get_child_index (container,
                                                       GIMP_OBJECT (dest_viewable));
          if (dest_index == -1)
            return FALSE;
        }

      if (src_index == -1 || dest_index == -1)
        return FALSE;
    }

  if (drop_pos == GTK_TREE_VIEW_DROP_BEFORE)
    {
      if (dest_index == (src_index + 1))
        return FALSE;
    }
  else
    {
      if (dest_index == (src_index - 1))
        return FALSE;
    }

  if (return_drop_pos)
    *return_drop_pos = drop_pos;

  if (return_drag_action)
    {
      if (src_viewable && g_type_is_a (G_TYPE_FROM_INSTANCE (src_viewable),
                                       container->children_type))
        *return_drag_action = GDK_ACTION_MOVE;
      else
        *return_drag_action = GDK_ACTION_COPY;
    }

  return TRUE;
}