broken pipe in the middle of the last commit...

* app/xcf/xcf-save.c: when saving a text layer, store an extra
	parasite that holds all information about the text.

	* app/xcf/xcf-load.c: if a "gimp-text-layer" parasite is found and
	it can be successfully deserialized to a GimpText object, convert
	the layer to a text layer and remove the parasite.

	* devel-docs/parasites.txt: documented the new "gimp-text-layer"
	parasite.

app/xcf/xcf-load.c

@@ -46,6 +46,9 @@
 #include "core/gimpparasitelist.h"
 #include "core/gimpunit.h"
 
+#include "text/gimptextlayer.h"
+#include "text/gimptext-parasite.h"
+
 #include "vectors/gimpvectors.h"
 #include "vectors/gimpvectors-compat.h"
 
@@ -724,6 +727,7 @@ xcf_load_layer (XcfInfo   *info,
 {
   GimpLayer     *layer;
   GimpLayerMask *layer_mask;
+  GimpParasite  *parasite;
   guint32        hierarchy_offset;
   guint32        layer_mask_offset;
   gboolean       apply_mask;
@@ -759,6 +763,30 @@ xcf_load_layer (XcfInfo   *info,
                               &apply_mask, &edit_mask, &show_mask))
     goto error;
 
+  /* check for a gimp-text parasite */
+  parasite = gimp_item_parasite_find (GIMP_ITEM (layer),
+                                      gimp_text_parasite_name ());
+  if (parasite)
+    {
+      GimpText *text = gimp_text_from_parasite (parasite);
+
+      if (text)
+        {
+          gboolean active;
+
+          gimp_parasite_list_remove (GIMP_ITEM (layer)->parasites,
+                                     gimp_parasite_name (parasite));
+
+          active = (info->active_layer == layer);
+
+          /* convert the layer to a text layer */
+          layer = gimp_text_layer_from_layer (layer, text);
+
+          if (active)
+            info->active_layer = layer;
+        }
+    }
+
   /* read the hierarchy and layer mask offsets */
   info->cp += xcf_read_int32 (info->fp, &hierarchy_offset, 1);
   info->cp += xcf_read_int32 (info->fp, &layer_mask_offset, 1);

app/xcf/xcf-save.c

@@ -43,6 +43,9 @@
 #include "core/gimpparasitelist.h"
 #include "core/gimpunit.h"
 
+#include "text/gimptextlayer.h"
+#include "text/gimptext-parasite.h"
+
 #include "vectors/gimpvectors.h"
 #include "vectors/gimpvectors-compat.h"
 
@@ -433,6 +436,8 @@ xcf_save_layer_props (XcfInfo   *info,
 		      GimpLayer *layer,
 		      GError   **error)
 {
+  GimpParasite *parasite = NULL;
+
   if (layer == gimp_image_get_active_layer (gimage))
     xcf_check_error (xcf_save_prop (info, gimage, PROP_ACTIVE_LAYER, error));
 
@@ -479,9 +484,26 @@ xcf_save_layer_props (XcfInfo   *info,
   xcf_check_error (xcf_save_prop (info, gimage, PROP_TATTOO, error, 
                                   GIMP_ITEM (layer)->tattoo));
 
+  if (GIMP_IS_TEXT_LAYER (layer))
+    {
+      GimpText *text = gimp_text_layer_get_text (GIMP_TEXT_LAYER (layer));
+
+      parasite = gimp_text_to_parasite (text);
+      gimp_parasite_list_add (GIMP_ITEM (layer)->parasites, parasite);
+    }
+
   if (gimp_parasite_list_length (GIMP_ITEM (layer)->parasites) > 0)
+    {
       xcf_check_error (xcf_save_prop (info, gimage, PROP_PARASITES, error,
                                       GIMP_ITEM (layer)->parasites));
+    }
+
+  if (parasite)
+    {
+      gimp_parasite_list_remove (GIMP_ITEM (layer)->parasites,
+                                 gimp_parasite_name (parasite));
+      gimp_parasite_free (parasite);
+    }
 
   xcf_check_error (xcf_save_prop (info, gimage, PROP_END, error));
 

devel-docs/parasites.txt

@@ -76,6 +76,13 @@ Global data follows no strict rules.
 		think of ;-) Determines how one index from each dimension is
 		selected (until we have pinpointed the brush to use).
 
+"gimp-text-layer" (LAYER, PERSISTENT)
+        The associated GimpText object serialized to a string. For
+        convenience the string is terminated by a trailing '\0'.
+        The idea of using a parasite for text layers is to keep the XCF
+        files backward compatible. Although gimp-1.2 doesn't know how
+        to handle the text layer, it keeps the parasite intact.
+
 "tiff-save-options" (IMAGE)
         The TiffSaveVals structure from the TIFF plugin.