[gimp] app, libgimp, pdb, plug-ins: allow pasting multiple full layers.



commit ef2402bf8e74a5d80f06535300664710ca0bfd8f
Author: Jehan <jehan girinstud io>
Date:   Sat Apr 24 22:45:09 2021 +0200

    app, libgimp, pdb, plug-ins: allow pasting multiple full layers.
    
    When a selection exists, we are copying then pasting the selection
    contents. In particular, with multi-layer selection, it means pasting a
    merged result of the selected layers (like a sample merged but limited
    to selected layers).
    
    Yet when no selection exists, with a single layer selected, a cut in
    particular would remove the layer fully, then a paste would copy it
    elsewhere (in the same image or even on a different image). This was
    still working, but not with multiple layers. This is now fixed and we
    can now copy/cut then paste several layers (without merge), which is
    sometimes a very practical way to move layers (sometimes simpler than
    drag'n drop, especially between images).
    
    As a consequence, the PDB function gimp_edit_paste() now also returns an
    array of layers (not a single layer).

 app/actions/buffers-commands.c     |   8 +-
 app/actions/edit-commands.c        |  28 ++-
 app/core/gimp-edit.c               | 372 +++++++++++++++++++++----------------
 app/core/gimp-edit.h               |   2 +-
 app/display/gimpdisplayshell-dnd.c |   4 +-
 app/pdb/edit-cmds.c                |  74 +++++---
 libgimp/gimpedit_pdb.c             |  33 ++--
 libgimp/gimpedit_pdb.h             |  41 ++--
 pdb/groups/edit.pdb                |  69 ++++---
 plug-ins/common/curve-bend.c       |  11 +-
 10 files changed, 386 insertions(+), 256 deletions(-)
---
diff --git a/app/actions/buffers-commands.c b/app/actions/buffers-commands.c
index c3b74b469e..367aba7ff9 100644
--- a/app/actions/buffers-commands.c
+++ b/app/actions/buffers-commands.c
@@ -90,10 +90,10 @@ buffers_paste_cmd_callback (GimpAction *action,
         {
           GList *drawables = gimp_image_get_selected_drawables (image);
 
-          gimp_edit_paste (image,
-                           g_list_length (drawables) == 1 ? drawables->data : NULL,
-                           GIMP_OBJECT (buffer), paste_type,
-                           x, y, width, height);
+          g_list_free (gimp_edit_paste (image,
+                                        g_list_length (drawables) == 1 ? drawables->data : NULL,
+                                        GIMP_OBJECT (buffer), paste_type,
+                                        x, y, width, height));
 
           gimp_image_flush (image);
           g_list_free (drawables);
diff --git a/app/actions/edit-commands.c b/app/actions/edit-commands.c
index e2551fef9a..787f818b2d 100644
--- a/app/actions/edit-commands.c
+++ b/app/actions/edit-commands.c
@@ -236,11 +236,22 @@ edit_cut_cmd_callback (GimpAction *action,
       GimpDisplay *display = action_data_get_display (data);
 
       if (display)
-        gimp_message_literal (image->gimp,
-                              G_OBJECT (display), GIMP_MESSAGE_INFO,
-                              GIMP_IS_IMAGE (cut) ?
-                              _("Cut layer to the clipboard.") :
-                              _("Cut pixels to the clipboard."));
+        {
+          gchar *msg;
+
+          if (GIMP_IS_IMAGE (cut))
+            msg = g_strdup_printf (ngettext ("Cut layer to the clipboard.",
+                                             "Cut %d layers to the clipboard.",
+                                             g_list_length (drawables)),
+                                   g_list_length (drawables));
+          else
+            msg = g_strdup (_("Cut pixels to the clipboard."));
+
+          gimp_message_literal (image->gimp,
+                                G_OBJECT (display), GIMP_MESSAGE_INFO,
+                                msg);
+          g_free (msg);
+        }
 
       gimp_image_flush (image);
     }
@@ -614,6 +625,7 @@ edit_paste (GimpDisplay   *display,
       GimpDisplayShell *shell     = gimp_display_get_shell (display);
       GList            *drawables = gimp_image_get_selected_drawables (image);
       GimpDrawable     *drawable  = NULL;
+      GList            *pasted_layers;
       gint              x, y;
       gint              width, height;
 
@@ -654,9 +666,11 @@ edit_paste (GimpDisplay   *display,
         ! gimp_display_shell_get_infinite_canvas (shell),
         &x, &y, &width, &height);
 
-      if (gimp_edit_paste (image, drawable, paste,
-                           paste_type, x, y, width, height))
+      if ((pasted_layers = gimp_edit_paste (image, drawable, paste,
+                                            paste_type, x, y, width, height)))
         {
+          gimp_image_set_selected_layers (image, pasted_layers);
+          g_list_free (pasted_layers);
           gimp_image_flush (image);
         }
 
diff --git a/app/core/gimp-edit.c b/app/core/gimp-edit.c
index 08a2b032e2..bf0be4f147 100644
--- a/app/core/gimp-edit.c
+++ b/app/core/gimp-edit.c
@@ -61,35 +61,79 @@ gimp_edit_cut (GimpImage     *image,
                GimpContext   *context,
                GError       **error)
 {
+  GList    *iter;
+  gboolean  cut_layers = FALSE;
+
   g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
   g_return_val_if_fail (GIMP_IS_CONTEXT (context), NULL);
   g_return_val_if_fail (error == NULL || *error == NULL, NULL);
 
-  if (g_list_length (drawables) == 1  &&
-      GIMP_IS_LAYER (drawables->data) &&
-      gimp_channel_is_empty (gimp_image_get_mask (image)))
+  if (gimp_channel_is_empty (gimp_image_get_mask (image)))
+    {
+      cut_layers = TRUE;
+
+      for (iter = drawables; iter; iter = iter->next)
+        if (! GIMP_IS_LAYER (iter->data))
+          {
+            cut_layers = FALSE;
+            break;
+          }
+    }
+
+  if (cut_layers)
     {
+      GList     *remove = NULL;
       GimpImage *clip_image;
-      gint       off_x, off_y;
+      gchar     *undo_label;
 
-      gimp_item_get_offset (GIMP_ITEM (drawables->data), &off_x, &off_y);
+      /* Let's work on a copy because we will edit the list to remove
+       * layers whose ancestor is also cut.
+       */
+      drawables = g_list_copy (drawables);
+      for (iter = drawables; iter; iter = iter->next)
+        {
+          GList *iter2;
 
-      clip_image = gimp_image_new_from_drawable (image->gimp, drawables->data);
-      g_object_set_data (G_OBJECT (clip_image), "offset-x",
-                         GINT_TO_POINTER (off_x));
-      g_object_set_data (G_OBJECT (clip_image), "offset-y",
-                         GINT_TO_POINTER (off_y));
+          for (iter2 = drawables; iter2; iter2 = iter2->next)
+            {
+              if (iter2 == iter)
+                continue;
+
+              if (gimp_viewable_is_ancestor (iter2->data, iter->data))
+                {
+                  /* When cutting a layer group, all its children come
+                   * with anyway.
+                   */
+                  remove = g_list_prepend (remove, iter);
+                  break;
+                }
+            }
+        }
+      for (iter = remove; iter; iter = iter->next)
+        drawables = g_list_delete_link (drawables, iter->data);
+
+      g_list_free (remove);
+
+      /* Now copy all layers into the clipboard image. */
+      clip_image = gimp_image_new_from_drawables (image->gimp, drawables, FALSE);
       gimp_container_remove (image->gimp->images, GIMP_OBJECT (clip_image));
       gimp_set_clipboard_image (image->gimp, clip_image);
       g_object_unref (clip_image);
 
+      undo_label = g_strdup_printf (ngettext ("Cut Layer", "Cut %d Layers",
+                                              g_list_length (drawables)),
+                                    g_list_length (drawables));
       gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_EDIT_CUT,
-                                   C_("undo-type", "Cut Layer"));
+                                   undo_label);
+      g_free (undo_label);
 
-      gimp_image_remove_layer (image, GIMP_LAYER (drawables->data),
-                               TRUE, NULL);
+      /* Remove layers from source image. */
+      for (iter = drawables; iter; iter = iter->next)
+        gimp_image_remove_layer (image, GIMP_LAYER (iter->data),
+                                 TRUE, NULL);
 
       gimp_image_undo_group_end (image);
+      g_list_free (drawables);
 
       return GIMP_OBJECT (gimp_get_clipboard_image (image->gimp));
     }
@@ -138,23 +182,15 @@ gimp_edit_copy (GimpImage     *image,
   g_return_val_if_fail (g_list_length (drawables) == 1 || drawables_are_layers, NULL);
 
   if (drawables_are_layers &&
-      gimp_channel_is_empty (gimp_image_get_mask (image)) &&
-      g_list_length (drawables) == 1)
+      gimp_channel_is_empty (gimp_image_get_mask (image)))
     {
       /* Special-casing the 1 layer with no selection case.
        * It allows us to save the whole layer with all pixels as stored,
        * not the rendered version of it.
        */
       GimpImage *clip_image;
-      gint       off_x, off_y;
-
-      gimp_item_get_offset (GIMP_ITEM (drawables->data), &off_x, &off_y);
 
-      clip_image = gimp_image_new_from_drawable (image->gimp, drawables->data);
-      g_object_set_data (G_OBJECT (clip_image), "offset-x",
-                         GINT_TO_POINTER (off_x));
-      g_object_set_data (G_OBJECT (clip_image), "offset-y",
-                         GINT_TO_POINTER (off_y));
+      clip_image = gimp_image_new_from_drawables (image->gimp, drawables, FALSE);
       gimp_container_remove (image->gimp->images, GIMP_OBJECT (clip_image));
       gimp_set_clipboard_image (image->gimp, clip_image);
       g_object_unref (clip_image);
@@ -260,13 +296,13 @@ gimp_edit_paste_is_floating (GimpPasteType paste_type)
   g_return_val_if_reached (FALSE);
 }
 
-static GimpLayer *
-gimp_edit_paste_get_layer (GimpImage     *image,
-                           GimpDrawable  *drawable,
-                           GimpObject    *paste,
-                           GimpPasteType *paste_type)
+static GList *
+gimp_edit_paste_get_layers (GimpImage     *image,
+                            GimpDrawable  *drawable,
+                            GimpObject    *paste,
+                            GimpPasteType *paste_type)
 {
-  GimpLayer  *layer = NULL;
+  GList      *layers = NULL;
   const Babl *floating_format;
 
   /*  change paste type to NEW_LAYER for cases where we can't attach a
@@ -292,84 +328,101 @@ gimp_edit_paste_get_layer (GimpImage     *image,
 
   if (GIMP_IS_IMAGE (paste))
     {
-      GType layer_type;
+      GList *iter;
 
-      layer = gimp_image_get_layer_iter (GIMP_IMAGE (paste))->data;
+      layers = g_list_copy (gimp_image_get_layer_iter (GIMP_IMAGE (paste)));
 
-      switch (*paste_type)
+      if (g_list_length (layers) > 1)
         {
-        case GIMP_PASTE_TYPE_FLOATING:
-        case GIMP_PASTE_TYPE_FLOATING_IN_PLACE:
-        case GIMP_PASTE_TYPE_FLOATING_INTO:
-        case GIMP_PASTE_TYPE_FLOATING_INTO_IN_PLACE:
-          /*  when pasting as floating make sure gimp_item_convert()
-           *  will turn group layers into normal layers, otherwise use
-           *  the same layer type so e.g. text information gets
-           *  preserved. See issue #2667.
-           */
-          if (GIMP_IS_GROUP_LAYER (layer))
-            layer_type = GIMP_TYPE_LAYER;
+          if (gimp_edit_paste_is_in_place (*paste_type))
+            *paste_type = GIMP_PASTE_TYPE_NEW_LAYER_IN_PLACE;
           else
-            layer_type = G_TYPE_FROM_INSTANCE (layer);
-          break;
-
-        case GIMP_PASTE_TYPE_NEW_LAYER:
-        case GIMP_PASTE_TYPE_NEW_LAYER_IN_PLACE:
-          layer_type = G_TYPE_FROM_INSTANCE (layer);
-          break;
-
-        default:
-          g_return_val_if_reached (NULL);
+            *paste_type = GIMP_PASTE_TYPE_NEW_LAYER;
         }
 
-      layer = GIMP_LAYER (gimp_item_convert (GIMP_ITEM (layer),
-                                             image, layer_type));
-
-      switch (*paste_type)
+      for (iter = layers; iter; iter = iter->next)
         {
-        case GIMP_PASTE_TYPE_FLOATING:
-        case GIMP_PASTE_TYPE_FLOATING_IN_PLACE:
-        case GIMP_PASTE_TYPE_FLOATING_INTO:
-        case GIMP_PASTE_TYPE_FLOATING_INTO_IN_PLACE:
-          /*  when pasting as floating selection, get rid of the layer mask,
-           *  and make sure the layer has the right format
-           */
-          if (gimp_layer_get_mask (layer))
-            gimp_layer_apply_mask (layer, GIMP_MASK_DISCARD, FALSE);
+          GType layer_type;
 
-          if (gimp_drawable_get_format (GIMP_DRAWABLE (layer)) !=
-              floating_format)
+          switch (*paste_type)
             {
-              gimp_drawable_convert_type (GIMP_DRAWABLE (layer), image,
-                                          gimp_drawable_get_base_type (drawable),
-                                          gimp_drawable_get_precision (drawable),
-                                          TRUE,
-                                          NULL, NULL,
-                                          GEGL_DITHER_NONE, GEGL_DITHER_NONE,
-                                          FALSE, NULL);
+            case GIMP_PASTE_TYPE_FLOATING:
+            case GIMP_PASTE_TYPE_FLOATING_IN_PLACE:
+            case GIMP_PASTE_TYPE_FLOATING_INTO:
+            case GIMP_PASTE_TYPE_FLOATING_INTO_IN_PLACE:
+              /*  when pasting as floating make sure gimp_item_convert()
+               *  will turn group layers into normal layers, otherwise use
+               *  the same layer type so e.g. text information gets
+               *  preserved. See issue #2667.
+               */
+              if (GIMP_IS_GROUP_LAYER (iter->data))
+                layer_type = GIMP_TYPE_LAYER;
+              else
+                layer_type = G_TYPE_FROM_INSTANCE (iter->data);
+              break;
+
+            case GIMP_PASTE_TYPE_NEW_LAYER:
+            case GIMP_PASTE_TYPE_NEW_LAYER_IN_PLACE:
+              layer_type = G_TYPE_FROM_INSTANCE (iter->data);
+              break;
+
+            default:
+              g_return_val_if_reached (NULL);
             }
-          break;
 
-        default:
-          break;
+          iter->data = GIMP_LAYER (gimp_item_convert (GIMP_ITEM (iter->data),
+                                                      image, layer_type));
+
+          switch (*paste_type)
+            {
+            case GIMP_PASTE_TYPE_FLOATING:
+            case GIMP_PASTE_TYPE_FLOATING_IN_PLACE:
+            case GIMP_PASTE_TYPE_FLOATING_INTO:
+            case GIMP_PASTE_TYPE_FLOATING_INTO_IN_PLACE:
+              /*  when pasting as floating selection, get rid of the layer mask,
+               *  and make sure the layer has the right format
+               */
+              if (gimp_layer_get_mask (iter->data))
+                gimp_layer_apply_mask (iter->data, GIMP_MASK_DISCARD, FALSE);
+
+              if (gimp_drawable_get_format (GIMP_DRAWABLE (iter->data)) !=
+                  floating_format)
+                {
+                  gimp_drawable_convert_type (GIMP_DRAWABLE (iter->data), image,
+                                              gimp_drawable_get_base_type (drawable),
+                                              gimp_drawable_get_precision (drawable),
+                                              TRUE,
+                                              NULL, NULL,
+                                              GEGL_DITHER_NONE, GEGL_DITHER_NONE,
+                                              FALSE, NULL);
+                }
+              break;
+
+            default:
+              break;
+            }
         }
     }
   else if (GIMP_IS_BUFFER (paste))
     {
+      GimpLayer *layer;
+
       layer = gimp_layer_new_from_buffer (GIMP_BUFFER (paste), image,
                                           floating_format,
                                           _("Pasted Layer"),
                                           GIMP_OPACITY_OPAQUE,
                                           gimp_image_get_default_new_layer_mode (image));
+
+      layers = g_list_prepend (layers, layer);
     }
 
-  return layer;
+  return layers;
 }
 
 static void
 gimp_edit_paste_get_viewport_offset (GimpImage    *image,
                                      GimpDrawable *drawable,
-                                     GimpObject   *paste,
+                                     GList        *pasted_layers,
                                      gint          viewport_x,
                                      gint          viewport_y,
                                      gint          viewport_width,
@@ -377,24 +430,35 @@ gimp_edit_paste_get_viewport_offset (GimpImage    *image,
                                      gint         *offset_x,
                                      gint         *offset_y)
 {
+  GList   *iter;
   gint     image_width;
   gint     image_height;
-  gint     width;
-  gint     height;
+  gint     width          = 0;
+  gint     height         = 0;
   gboolean clamp_to_image = TRUE;
 
   g_return_if_fail (GIMP_IS_IMAGE (image));
   g_return_if_fail (drawable == NULL || GIMP_IS_DRAWABLE (drawable));
   g_return_if_fail (drawable == NULL ||
                     gimp_item_is_attached (GIMP_ITEM (drawable)));
-  g_return_if_fail (GIMP_IS_VIEWABLE (paste));
+  g_return_if_fail (pasted_layers != NULL);
   g_return_if_fail (offset_x != NULL);
   g_return_if_fail (offset_y != NULL);
 
   image_width  = gimp_image_get_width  (image);
   image_height = gimp_image_get_height (image);
 
-  gimp_viewable_get_size (GIMP_VIEWABLE (paste), &width, &height);
+  for (iter = pasted_layers; iter; iter = iter->next)
+    {
+      gint layer_width;
+      gint layer_height;
+
+      g_return_if_fail (GIMP_IS_VIEWABLE (iter->data));
+      gimp_viewable_get_size (iter->data, &layer_width, &layer_height);
+
+      width  = MAX (width, layer_width);
+      height = MAX (height, layer_height);
+    }
 
   if (viewport_width  == image_width &&
       viewport_height == image_height)
@@ -504,94 +568,71 @@ gimp_edit_paste_get_viewport_offset (GimpImage    *image,
     }
 }
 
-static void
-gimp_edit_paste_get_paste_offset (GimpImage    *image,
-                                  GimpDrawable *drawable,
-                                  GimpObject   *paste,
-                                  gint         *offset_x,
-                                  gint         *offset_y)
-{
-  g_return_if_fail (GIMP_IS_IMAGE (image));
-  g_return_if_fail (drawable == NULL || GIMP_IS_DRAWABLE (drawable));
-  g_return_if_fail (drawable == NULL ||
-                    gimp_item_is_attached (GIMP_ITEM (drawable)));
-  g_return_if_fail (GIMP_IS_VIEWABLE (paste));
-  g_return_if_fail (offset_x != NULL);
-  g_return_if_fail (offset_y != NULL);
-
-  if (GIMP_IS_IMAGE (paste))
-    {
-      *offset_x = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (paste),
-                                                      "offset-x"));
-      *offset_y = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (paste),
-                                                      "offset-y"));
-    }
-  else if (GIMP_IS_BUFFER (paste))
-    {
-      GimpBuffer *buffer = GIMP_BUFFER (paste);
-
-      *offset_x = buffer->offset_x;
-      *offset_y = buffer->offset_y;
-    }
-}
-
-static GimpLayer *
+static GList *
 gimp_edit_paste_paste (GimpImage     *image,
                        GimpDrawable  *drawable,
-                       GimpLayer     *layer,
+                       GList         *layers,
                        GimpPasteType  paste_type,
+                       gboolean       use_offset,
                        gint           offset_x,
                        gint           offset_y)
 {
-  gimp_item_translate (GIMP_ITEM (layer), offset_x, offset_y, FALSE);
+  GList *iter;
 
   gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_EDIT_PASTE,
                                C_("undo-type", "Paste"));
 
-  switch (paste_type)
+  for (iter = layers; iter; iter = iter->next)
     {
-    case GIMP_PASTE_TYPE_FLOATING:
-    case GIMP_PASTE_TYPE_FLOATING_IN_PLACE:
-      /*  if there is a selection mask clear it - this might not
-       *  always be desired, but in general, it seems like the correct
-       *  behavior
-       */
-      if (! gimp_channel_is_empty (gimp_image_get_mask (image)))
-        gimp_channel_clear (gimp_image_get_mask (image), NULL, TRUE);
+      /* Layers for in-place paste are already translated. */
+      if (use_offset)
+        gimp_item_translate (GIMP_ITEM (iter->data), offset_x, offset_y, FALSE);
 
-      /* fall thru */
+      switch (paste_type)
+        {
+        case GIMP_PASTE_TYPE_FLOATING:
+        case GIMP_PASTE_TYPE_FLOATING_IN_PLACE:
+          /*  if there is a selection mask clear it - this might not
+           *  always be desired, but in general, it seems like the correct
+           *  behavior
+           */
+          if (! gimp_channel_is_empty (gimp_image_get_mask (image)))
+            gimp_channel_clear (gimp_image_get_mask (image), NULL, TRUE);
 
-    case GIMP_PASTE_TYPE_FLOATING_INTO:
-    case GIMP_PASTE_TYPE_FLOATING_INTO_IN_PLACE:
-      floating_sel_attach (layer, drawable);
-      break;
+          /* fall thru */
 
-    case GIMP_PASTE_TYPE_NEW_LAYER:
-    case GIMP_PASTE_TYPE_NEW_LAYER_IN_PLACE:
-      {
-        GimpLayer *parent   = NULL;
-        gint       position = 0;
-
-        /*  always add on top of a passed layer, where we would attach
-         *  a floating selection
-         */
-        if (GIMP_IS_LAYER (drawable))
-          {
-            parent   = gimp_layer_get_parent (GIMP_LAYER (drawable));
-            position = gimp_item_get_index (GIMP_ITEM (drawable));
-          }
+        case GIMP_PASTE_TYPE_FLOATING_INTO:
+        case GIMP_PASTE_TYPE_FLOATING_INTO_IN_PLACE:
+          floating_sel_attach (iter->data, drawable);
+          break;
 
-        gimp_image_add_layer (image, layer, parent, position, TRUE);
-      }
-      break;
+        case GIMP_PASTE_TYPE_NEW_LAYER:
+        case GIMP_PASTE_TYPE_NEW_LAYER_IN_PLACE:
+            {
+              GimpLayer *parent   = NULL;
+              gint       position = 0;
+
+              /*  always add on top of a passed layer, where we would attach
+               *  a floating selection
+               */
+              if (GIMP_IS_LAYER (drawable))
+                {
+                  parent   = gimp_layer_get_parent (GIMP_LAYER (drawable));
+                  position = gimp_item_get_index (GIMP_ITEM (drawable));
+                }
+
+              gimp_image_add_layer (image, iter->data, parent, position, TRUE);
+            }
+          break;
+        }
     }
 
   gimp_image_undo_group_end (image);
 
-  return layer;
+  return layers;
 }
 
-GimpLayer *
+GList *
 gimp_edit_paste (GimpImage     *image,
                  GimpDrawable  *drawable,
                  GimpObject    *paste,
@@ -601,9 +642,10 @@ gimp_edit_paste (GimpImage     *image,
                  gint           viewport_width,
                  gint           viewport_height)
 {
-  GimpLayer *layer;
-  gint       offset_x = 0;
-  gint       offset_y = 0;
+  GList    *layers;
+  gboolean  use_offset = FALSE;
+  gint      offset_x   = 0;
+  gint      offset_y   = 0;
 
   g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
   g_return_val_if_fail (drawable == NULL || GIMP_IS_DRAWABLE (drawable), NULL);
@@ -611,20 +653,26 @@ gimp_edit_paste (GimpImage     *image,
                         gimp_item_is_attached (GIMP_ITEM (drawable)), NULL);
   g_return_val_if_fail (GIMP_IS_IMAGE (paste) || GIMP_IS_BUFFER (paste), NULL);
 
-  layer = gimp_edit_paste_get_layer (image, drawable, paste, &paste_type);
+  layers = gimp_edit_paste_get_layers (image, drawable, paste, &paste_type);
 
-  if (! layer)
+  if (! layers)
     return NULL;
 
   if (gimp_edit_paste_is_in_place (paste_type))
     {
-      gimp_edit_paste_get_paste_offset (image, drawable, paste,
-                                        &offset_x,
-                                        &offset_y);
+      if (GIMP_IS_BUFFER (paste))
+        {
+          GimpBuffer *buffer = GIMP_BUFFER (paste);
+
+          use_offset = TRUE;
+          offset_x   = buffer->offset_x;
+          offset_y   = buffer->offset_y;
+        }
     }
   else
     {
-      gimp_edit_paste_get_viewport_offset (image, drawable, GIMP_OBJECT (layer),
+      use_offset = TRUE;
+      gimp_edit_paste_get_viewport_offset (image, drawable, layers,
                                            viewport_x,
                                            viewport_y,
                                            viewport_width,
@@ -633,8 +681,8 @@ gimp_edit_paste (GimpImage     *image,
                                            &offset_y);
     }
 
-  return gimp_edit_paste_paste (image, drawable, layer, paste_type,
-                                offset_x, offset_y);
+  return gimp_edit_paste_paste (image, drawable, layers, paste_type,
+                                use_offset, offset_x, offset_y);
 }
 
 GimpImage *
diff --git a/app/core/gimp-edit.h b/app/core/gimp-edit.h
index 84f97b7481..c4fadf0455 100644
--- a/app/core/gimp-edit.h
+++ b/app/core/gimp-edit.h
@@ -31,7 +31,7 @@ GimpBuffer  * gimp_edit_copy_visible       (GimpImage       *image,
                                             GimpContext     *context,
                                             GError         **error);
 
-GimpLayer   * gimp_edit_paste              (GimpImage       *image,
+GList       * gimp_edit_paste              (GimpImage       *image,
                                             GimpDrawable    *drawable,
                                             GimpObject      *paste,
                                             GimpPasteType    paste_type,
diff --git a/app/display/gimpdisplayshell-dnd.c b/app/display/gimpdisplayshell-dnd.c
index d3a0612d47..4c274dfd6f 100644
--- a/app/display/gimpdisplayshell-dnd.c
+++ b/app/display/gimpdisplayshell-dnd.c
@@ -517,8 +517,8 @@ gimp_display_shell_drop_buffer (GtkWidget    *widget,
 
   /* FIXME: popup a menu for selecting "Paste Into" */
 
-  gimp_edit_paste (image, drawable, GIMP_OBJECT (buffer),
-                   paste_type, x, y, width, height);
+  g_list_free (gimp_edit_paste (image, drawable, GIMP_OBJECT (buffer),
+                                paste_type, x, y, width, height));
 
   gimp_display_shell_dnd_flush (shell, image);
 }
diff --git a/app/pdb/edit-cmds.c b/app/pdb/edit-cmds.c
index 37f1f55d8f..ad24a23ddb 100644
--- a/app/pdb/edit-cmds.c
+++ b/app/pdb/edit-cmds.c
@@ -249,7 +249,8 @@ edit_paste_invoker (GimpProcedure         *procedure,
   GimpValueArray *return_vals;
   GimpDrawable *drawable;
   gboolean paste_into;
-  GimpLayer *floating_sel = NULL;
+  gint num_layers = 0;
+  GimpLayer **layers = NULL;
 
   drawable = g_value_get_object (gimp_value_array_index (args, 0));
   paste_into = g_value_get_boolean (gimp_value_array_index (args, 1));
@@ -263,15 +264,26 @@ edit_paste_invoker (GimpProcedure         *procedure,
                                      GIMP_PDB_ITEM_CONTENT, error) &&
           gimp_pdb_item_is_not_group (GIMP_ITEM (drawable), error))
         {
-          floating_sel = gimp_edit_paste (gimp_item_get_image (GIMP_ITEM (drawable)),
-                                          drawable, paste,
-                                          paste_into ?
-                                          GIMP_PASTE_TYPE_FLOATING_INTO :
-                                          GIMP_PASTE_TYPE_FLOATING,
-                                          -1, -1, -1, -1);
-
-          if (! floating_sel)
+          GList *list;
+          gint   i;
+
+          list = gimp_edit_paste (gimp_item_get_image (GIMP_ITEM (drawable)),
+                                  drawable, paste,
+                                  paste_into ?
+                                  GIMP_PASTE_TYPE_FLOATING_INTO :
+                                  GIMP_PASTE_TYPE_FLOATING,
+                                  -1, -1, -1, -1);
+
+          if (! list)
             success = FALSE;
+
+          num_layers = g_list_length (list);
+          layers = g_new (GimpLayer *, num_layers);
+
+          for (i = 0; i < num_layers; i++, list = g_list_next (list))
+            layers[i] = g_object_ref (list->data);
+
+          g_list_free (list);
         }
       else
         success = FALSE;
@@ -281,7 +293,10 @@ edit_paste_invoker (GimpProcedure         *procedure,
                                                   error ? *error : NULL);
 
   if (success)
-    g_value_set_object (gimp_value_array_index (return_vals, 1), floating_sel);
+    {
+      g_value_set_int (gimp_value_array_index (return_vals, 1), num_layers);
+      gimp_value_take_object_array (gimp_value_array_index (return_vals, 2), GIMP_TYPE_LAYER, (GObject **) 
layers, num_layers);
+    }
 
   return return_vals;
 }
@@ -562,14 +577,20 @@ edit_named_paste_invoker (GimpProcedure         *procedure,
                                      GIMP_PDB_ITEM_CONTENT, error) &&
           gimp_pdb_item_is_not_group (GIMP_ITEM (drawable), error))
         {
-          floating_sel = gimp_edit_paste (gimp_item_get_image (GIMP_ITEM (drawable)),
-                                          drawable, GIMP_OBJECT (buffer),
-                                          paste_into ?
-                                          GIMP_PASTE_TYPE_FLOATING_INTO :
-                                          GIMP_PASTE_TYPE_FLOATING,
-                                          -1, -1, -1, -1);
-          if (! floating_sel)
+          GList *layers;
+
+          layers = gimp_edit_paste (gimp_item_get_image (GIMP_ITEM (drawable)),
+                                    drawable, GIMP_OBJECT (buffer),
+                                    paste_into ?
+                                    GIMP_PASTE_TYPE_FLOATING_INTO :
+                                    GIMP_PASTE_TYPE_FLOATING,
+                                    -1, -1, -1, -1);
+          if (! layers)
             success = FALSE;
+          else
+            floating_sel = layers->data;
+
+          g_list_free (layers);
         }
       else
         success = FALSE;
@@ -735,7 +756,8 @@ register_edit_procs (GimpPDB *pdb)
                                "gimp-edit-paste");
   gimp_procedure_set_static_help (procedure,
                                   "Paste buffer to the specified drawable.",
-                                  "This procedure pastes a copy of the internal GIMP edit buffer to the 
specified drawable. The GIMP edit buffer will be empty unless a call was previously made to either 
'gimp-edit-cut' or 'gimp-edit-copy'. The \"paste_into\" option specifies whether to clear the current image 
selection, or to paste the buffer \"behind\" the selection. This allows the selection to act as a mask for 
the pasted buffer. Anywhere that the selection mask is non-zero, the pasted buffer will show through. The 
pasted buffer will be a new layer in the image which is designated as the image floating selection. If the 
image has a floating selection at the time of pasting, the old floating selection will be anchored to its 
drawable before the new floating selection is added. This procedure returns the new floating layer. The 
resulting floating selection will already be attached to the specified drawable, and a subsequent call to 
floating_sel_attach is not needed.",
+                                  "This procedure pastes a copy of the internal GIMP edit buffer to the 
specified drawable. The GIMP edit buffer will be empty unless a call was previously made to either 
'gimp-edit-cut' or 'gimp-edit-copy'. The \"paste_into\" option specifies whether to clear the current image 
selection, or to paste the buffer \"behind\" the selection. This allows the selection to act as a mask for 
the pasted buffer. Anywhere that the selection mask is non-zero, the pasted buffer will show through. The 
pasted data may be a floating selection when relevant, layers otherwise. If the image has a floating 
selection at the time of pasting, the old floating selection will be anchored to its drawable before the new 
floating selection is added.\n"
+                                     "This procedure returns the new layers (floating or not). If the result 
is a floating selection, it will already be attached to the specified drawable, and a subsequent call to 
floating_sel_attach is not needed.",
                                   NULL);
   gimp_procedure_set_static_attribution (procedure,
                                          "Spencer Kimball & Peter Mattis",
@@ -754,11 +776,17 @@ register_edit_procs (GimpPDB *pdb)
                                                      FALSE,
                                                      GIMP_PARAM_READWRITE));
   gimp_procedure_add_return_value (procedure,
-                                   gimp_param_spec_layer ("floating-sel",
-                                                          "floating sel",
-                                                          "The new floating selection",
-                                                          FALSE,
-                                                          GIMP_PARAM_READWRITE));
+                                   g_param_spec_int ("num-layers",
+                                                     "num layers",
+                                                     "The newly pasted layers",
+                                                     0, G_MAXINT32, 0,
+                                                     GIMP_PARAM_READWRITE));
+  gimp_procedure_add_return_value (procedure,
+                                   gimp_param_spec_object_array ("layers",
+                                                                 "layers",
+                                                                 "The list of pasted layers.",
+                                                                 GIMP_TYPE_LAYER,
+                                                                 GIMP_PARAM_READWRITE));
   gimp_pdb_register_procedure (pdb, procedure);
   g_object_unref (procedure);
 
diff --git a/libgimp/gimpedit_pdb.c b/libgimp/gimpedit_pdb.c
index 00d543b7d3..8c2b3081d9 100644
--- a/libgimp/gimpedit_pdb.c
+++ b/libgimp/gimpedit_pdb.c
@@ -170,6 +170,7 @@ gimp_edit_copy_visible (GimpImage *image)
  * gimp_edit_paste:
  * @drawable: The drawable to paste to.
  * @paste_into: Clear selection, or paste behind it?
+ * @num_layers: (out): The newly pasted layers.
  *
  * Paste buffer to the specified drawable.
  *
@@ -180,24 +181,27 @@ gimp_edit_copy_visible (GimpImage *image)
  * image selection, or to paste the buffer \"behind\" the selection.
  * This allows the selection to act as a mask for the pasted buffer.
  * Anywhere that the selection mask is non-zero, the pasted buffer will
- * show through. The pasted buffer will be a new layer in the image
- * which is designated as the image floating selection. If the image
- * has a floating selection at the time of pasting, the old floating
- * selection will be anchored to its drawable before the new floating
- * selection is added. This procedure returns the new floating layer.
- * The resulting floating selection will already be attached to the
+ * show through. The pasted data may be a floating selection when
+ * relevant, layers otherwise. If the image has a floating selection at
+ * the time of pasting, the old floating selection will be anchored to
+ * its drawable before the new floating selection is added.
+ * This procedure returns the new layers (floating or not). If the
+ * result is a floating selection, it will already be attached to the
  * specified drawable, and a subsequent call to floating_sel_attach is
  * not needed.
  *
- * Returns: (transfer none): The new floating selection.
+ * Returns: (array length=num_layers) (element-type GimpLayer) (transfer container):
+ *          The list of pasted layers.
+ *          The returned value must be freed with g_free().
  **/
-GimpLayer *
+GimpLayer **
 gimp_edit_paste (GimpDrawable *drawable,
-                 gboolean      paste_into)
+                 gboolean      paste_into,
+                 gint         *num_layers)
 {
   GimpValueArray *args;
   GimpValueArray *return_vals;
-  GimpLayer *floating_sel = NULL;
+  GimpLayer **layers = NULL;
 
   args = gimp_value_array_new_from_types (NULL,
                                           GIMP_TYPE_DRAWABLE, drawable,
@@ -209,12 +213,17 @@ gimp_edit_paste (GimpDrawable *drawable,
                                               args);
   gimp_value_array_unref (args);
 
+  *num_layers = 0;
+
   if (GIMP_VALUES_GET_ENUM (return_vals, 0) == GIMP_PDB_SUCCESS)
-    floating_sel = GIMP_VALUES_GET_LAYER (return_vals, 1);
+    {
+      *num_layers = GIMP_VALUES_GET_INT (return_vals, 1);
+      { GimpObjectArray *a = g_value_get_boxed (gimp_value_array_index (return_vals, 2)); if (a) layers = 
g_memdup (a->data, a->length * sizeof (gpointer)); };
+    }
 
   gimp_value_array_unref (return_vals);
 
-  return floating_sel;
+  return layers;
 }
 
 /**
diff --git a/libgimp/gimpedit_pdb.h b/libgimp/gimpedit_pdb.h
index 013a440e74..4700fd0075 100644
--- a/libgimp/gimpedit_pdb.h
+++ b/libgimp/gimpedit_pdb.h
@@ -32,26 +32,27 @@ G_BEGIN_DECLS
 /* For information look into the C source or the html documentation */
 
 
-gboolean   gimp_edit_cut                      (gint             num_drawables,
-                                               const GimpItem **drawables);
-gboolean   gimp_edit_copy                     (gint             num_drawables,
-                                               const GimpItem **drawables);
-gboolean   gimp_edit_copy_visible             (GimpImage       *image);
-GimpLayer* gimp_edit_paste                    (GimpDrawable    *drawable,
-                                               gboolean         paste_into);
-GimpImage* gimp_edit_paste_as_new_image       (void);
-gchar*     gimp_edit_named_cut                (gint             num_drawables,
-                                               const GimpItem **drawables,
-                                               const gchar     *buffer_name);
-gchar*     gimp_edit_named_copy               (gint             num_drawables,
-                                               const GimpItem **drawables,
-                                               const gchar     *buffer_name);
-gchar*     gimp_edit_named_copy_visible       (GimpImage       *image,
-                                               const gchar     *buffer_name);
-GimpLayer* gimp_edit_named_paste              (GimpDrawable    *drawable,
-                                               const gchar     *buffer_name,
-                                               gboolean         paste_into);
-GimpImage* gimp_edit_named_paste_as_new_image (const gchar     *buffer_name);
+gboolean    gimp_edit_cut                      (gint             num_drawables,
+                                                const GimpItem **drawables);
+gboolean    gimp_edit_copy                     (gint             num_drawables,
+                                                const GimpItem **drawables);
+gboolean    gimp_edit_copy_visible             (GimpImage       *image);
+GimpLayer** gimp_edit_paste                    (GimpDrawable    *drawable,
+                                                gboolean         paste_into,
+                                                gint            *num_layers);
+GimpImage*  gimp_edit_paste_as_new_image       (void);
+gchar*      gimp_edit_named_cut                (gint             num_drawables,
+                                                const GimpItem **drawables,
+                                                const gchar     *buffer_name);
+gchar*      gimp_edit_named_copy               (gint             num_drawables,
+                                                const GimpItem **drawables,
+                                                const gchar     *buffer_name);
+gchar*      gimp_edit_named_copy_visible       (GimpImage       *image,
+                                                const gchar     *buffer_name);
+GimpLayer*  gimp_edit_named_paste              (GimpDrawable    *drawable,
+                                                const gchar     *buffer_name,
+                                                gboolean         paste_into);
+GimpImage*  gimp_edit_named_paste_as_new_image (const gchar     *buffer_name);
 
 
 G_END_DECLS
diff --git a/pdb/groups/edit.pdb b/pdb/groups/edit.pdb
index af28071cd5..5383ebb8eb 100644
--- a/pdb/groups/edit.pdb
+++ b/pdb/groups/edit.pdb
@@ -238,13 +238,15 @@ was previously made to either gimp_edit_cut() or gimp_edit_copy(). The
 selection, or to paste the buffer "behind" the selection. This allows
 the selection to act as a mask for the pasted buffer. Anywhere that
 the selection mask is non-zero, the pasted buffer will show
-through. The pasted buffer will be a new layer in the image which is
-designated as the image floating selection. If the image has a
-floating selection at the time of pasting, the old floating selection
-will be anchored to its drawable before the new floating selection is
-added. This procedure returns the new floating layer. The resulting
-floating selection will already be attached to the specified drawable,
-and a subsequent call to floating_sel_attach is not needed.
+through.
+The pasted data may be a floating selection when relevant, layers otherwise.
+If the image has a floating selection at the time of pasting, the old
+floating selection will be anchored to its drawable before the new
+floating selection is added.
+
+This procedure returns the new layers (floating or not). If the result
+is a floating selection, it will already be attached to the specified
+drawable, and a subsequent call to floating_sel_attach is not needed.
 HELP
 
     &std_pdb_misc;
@@ -257,8 +259,10 @@ HELP
     );
 
     @outargs = (
-       { name  => 'floating_sel', type  => 'layer',
-         desc  => 'The new floating selection' }
+        { name => 'layers', type => 'layerarray',
+          desc => 'The list of pasted layers.',
+          array => { name => 'num_layers',
+                     desc => 'The newly pasted layers' } }
     );
 
     %invoke = (
@@ -271,15 +275,26 @@ HELP
                                  GIMP_PDB_ITEM_CONTENT, error) &&
       gimp_pdb_item_is_not_group (GIMP_ITEM (drawable), error))
     {
-      floating_sel = gimp_edit_paste (gimp_item_get_image (GIMP_ITEM (drawable)),
-                                      drawable, paste,
-                                      paste_into ?
-                                      GIMP_PASTE_TYPE_FLOATING_INTO :
-                                      GIMP_PASTE_TYPE_FLOATING,
-                                      -1, -1, -1, -1);
-
-      if (! floating_sel)
+      GList *list;
+      gint   i;
+
+      list = gimp_edit_paste (gimp_item_get_image (GIMP_ITEM (drawable)),
+                              drawable, paste,
+                              paste_into ?
+                              GIMP_PASTE_TYPE_FLOATING_INTO :
+                              GIMP_PASTE_TYPE_FLOATING,
+                              -1, -1, -1, -1);
+
+      if (! list)
         success = FALSE;
+
+      num_layers = g_list_length (list);
+      layers = g_new (GimpLayer *, num_layers);
+
+      for (i = 0; i < num_layers; i++, list = g_list_next (list))
+        layers[i] = g_object_ref (list->data);
+
+      g_list_free (list);
     }
   else
     success = FALSE;
@@ -583,14 +598,20 @@ HELP
                                  GIMP_PDB_ITEM_CONTENT, error) &&
       gimp_pdb_item_is_not_group (GIMP_ITEM (drawable), error))
     {
-      floating_sel = gimp_edit_paste (gimp_item_get_image (GIMP_ITEM (drawable)),
-                                      drawable, GIMP_OBJECT (buffer),
-                                      paste_into ?
-                                      GIMP_PASTE_TYPE_FLOATING_INTO :
-                                      GIMP_PASTE_TYPE_FLOATING,
-                                      -1, -1, -1, -1);
-      if (! floating_sel)
+      GList *layers;
+
+      layers = gimp_edit_paste (gimp_item_get_image (GIMP_ITEM (drawable)),
+                                drawable, GIMP_OBJECT (buffer),
+                                paste_into ?
+                                GIMP_PASTE_TYPE_FLOATING_INTO :
+                                GIMP_PASTE_TYPE_FLOATING,
+                                -1, -1, -1, -1);
+      if (! layers)
         success = FALSE;
+      else
+        floating_sel = layers->data;
+
+      g_list_free (layers);
     }
   else
     success = FALSE;
diff --git a/plug-ins/common/curve-bend.c b/plug-ins/common/curve-bend.c
index fb10524b89..0796168720 100644
--- a/plug-ins/common/curve-bend.c
+++ b/plug-ins/common/curve-bend.c
@@ -625,7 +625,16 @@ p_if_selection_float_it (GimpImage *image,
              the selection  */
           if (gimp_edit_copy (1, (const GimpItem **) &layer))
             {
-              layer = gimp_edit_paste (GIMP_DRAWABLE (layer), FALSE);
+              GimpLayer **layers;
+              gint        num_layers;
+
+              layers = gimp_edit_paste (GIMP_DRAWABLE (layer), FALSE, &num_layers);
+              /* Since we explicitly copied a single layer, there should
+               * be no more than a single layer in the paste as well.
+               */
+              layer = num_layers ? layers[0] : NULL;
+
+              g_free (layers);
             }
           else
             {


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