Adding upstream version 2.10.22.upstream/2.10.22upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 861 insertions, 0 deletions

diff --git a/app/text/gimptextlayer.c b/app/text/gimptextlayer.c
new file mode 100644
index 0000000..fb4146a
--- /dev/null
+++ b/app/text/gimptextlayer.c
@@ -0,0 +1,861 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * GimpTextLayer
+ * Copyright (C) 2002-2004  Sven Neumann <sven@gimp.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <string.h>
+
+#include <cairo.h>
+#include <gegl.h>
+#include <gdk-pixbuf/gdk-pixbuf.h>
+#include <pango/pangocairo.h>
+
+#include "libgimpbase/gimpbase.h"
+#include "libgimpcolor/gimpcolor.h"
+#include "libgimpconfig/gimpconfig.h"
+
+#include "text-types.h"
+
+#include "gegl/gimp-babl.h"
+#include "gegl/gimp-gegl-loops.h"
+#include "gegl/gimp-gegl-utils.h"
+
+#include "core/gimp.h"
+#include "core/gimp-utils.h"
+#include "core/gimpcontext.h"
+#include "core/gimpcontainer.h"
+#include "core/gimpdatafactory.h"
+#include "core/gimpimage.h"
+#include "core/gimpimage-color-profile.h"
+#include "core/gimpimage-undo.h"
+#include "core/gimpimage-undo-push.h"
+#include "core/gimpitemtree.h"
+#include "core/gimpparasitelist.h"
+
+#include "gimptext.h"
+#include "gimptextlayer.h"
+#include "gimptextlayer-transform.h"
+#include "gimptextlayout.h"
+#include "gimptextlayout-render.h"
+
+#include "gimp-intl.h"
+
+
+enum
+{
+  PROP_0,
+  PROP_TEXT,
+  PROP_AUTO_RENAME,
+  PROP_MODIFIED
+};
+
+struct _GimpTextLayerPrivate
+{
+  GimpTextDirection base_dir;
+};
+
+static void       gimp_text_layer_finalize       (GObject           *object);
+static void       gimp_text_layer_get_property   (GObject           *object,
+                                                  guint              property_id,
+                                                  GValue            *value,
+                                                  GParamSpec        *pspec);
+static void       gimp_text_layer_set_property   (GObject           *object,
+                                                  guint              property_id,
+                                                  const GValue      *value,
+                                                  GParamSpec        *pspec);
+
+static gint64     gimp_text_layer_get_memsize    (GimpObject        *object,
+                                                  gint64            *gui_size);
+
+static GimpItem * gimp_text_layer_duplicate      (GimpItem          *item,
+                                                  GType              new_type);
+static gboolean   gimp_text_layer_rename         (GimpItem          *item,
+                                                  const gchar       *new_name,
+                                                  const gchar       *undo_desc,
+                                                  GError           **error);
+
+static void       gimp_text_layer_set_buffer     (GimpDrawable      *drawable,
+                                                  gboolean           push_undo,
+                                                  const gchar       *undo_desc,
+                                                  GeglBuffer        *buffer,
+                                                  const GeglRectangle *bounds);
+static void       gimp_text_layer_push_undo      (GimpDrawable      *drawable,
+                                                  const gchar       *undo_desc,
+                                                  GeglBuffer        *buffer,
+                                                  gint               x,
+                                                  gint               y,
+                                                  gint               width,
+                                                  gint               height);
+
+static void       gimp_text_layer_convert_type   (GimpLayer         *layer,
+                                                  GimpImage         *dest_image,
+                                                  const Babl        *new_format,
+                                                  GimpColorProfile  *dest_profile,
+                                                  GeglDitherMethod   layer_dither_type,
+                                                  GeglDitherMethod   mask_dither_type,
+                                                  gboolean           push_undo,
+                                                  GimpProgress      *progress);
+
+static void       gimp_text_layer_text_changed   (GimpTextLayer     *layer);
+static gboolean   gimp_text_layer_render         (GimpTextLayer     *layer);
+static void       gimp_text_layer_render_layout  (GimpTextLayer     *layer,
+                                                  GimpTextLayout    *layout);
+
+
+G_DEFINE_TYPE_WITH_PRIVATE (GimpTextLayer, gimp_text_layer, GIMP_TYPE_LAYER)
+
+#define parent_class gimp_text_layer_parent_class
+
+
+static void
+gimp_text_layer_class_init (GimpTextLayerClass *klass)
+{
+  GObjectClass      *object_class      = G_OBJECT_CLASS (klass);
+  GimpObjectClass   *gimp_object_class = GIMP_OBJECT_CLASS (klass);
+  GimpViewableClass *viewable_class    = GIMP_VIEWABLE_CLASS (klass);
+  GimpItemClass     *item_class        = GIMP_ITEM_CLASS (klass);
+  GimpDrawableClass *drawable_class    = GIMP_DRAWABLE_CLASS (klass);
+  GimpLayerClass    *layer_class       = GIMP_LAYER_CLASS (klass);
+
+  object_class->finalize            = gimp_text_layer_finalize;
+  object_class->get_property        = gimp_text_layer_get_property;
+  object_class->set_property        = gimp_text_layer_set_property;
+
+  gimp_object_class->get_memsize    = gimp_text_layer_get_memsize;
+
+  viewable_class->default_icon_name = "gimp-text-layer";
+
+  item_class->duplicate             = gimp_text_layer_duplicate;
+  item_class->rename                = gimp_text_layer_rename;
+
+#if 0
+  item_class->scale                 = gimp_text_layer_scale;
+  item_class->flip                  = gimp_text_layer_flip;
+  item_class->rotate                = gimp_text_layer_rotate;
+  item_class->transform             = gimp_text_layer_transform;
+#endif
+
+  item_class->default_name          = _("Text Layer");
+  item_class->rename_desc           = _("Rename Text Layer");
+  item_class->translate_desc        = _("Move Text Layer");
+  item_class->scale_desc            = _("Scale Text Layer");
+  item_class->resize_desc           = _("Resize Text Layer");
+  item_class->flip_desc             = _("Flip Text Layer");
+  item_class->rotate_desc           = _("Rotate Text Layer");
+  item_class->transform_desc        = _("Transform Text Layer");
+
+  drawable_class->set_buffer        = gimp_text_layer_set_buffer;
+  drawable_class->push_undo         = gimp_text_layer_push_undo;
+
+  layer_class->convert_type         = gimp_text_layer_convert_type;
+
+  GIMP_CONFIG_PROP_OBJECT (object_class, PROP_TEXT,
+                           "text",
+                           NULL, NULL,
+                           GIMP_TYPE_TEXT,
+                           GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_AUTO_RENAME,
+                            "auto-rename",
+                            NULL, NULL,
+                            TRUE,
+                            GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_MODIFIED,
+                            "modified",
+                            NULL, NULL,
+                            FALSE,
+                            GIMP_PARAM_STATIC_STRINGS);
+}
+
+static void
+gimp_text_layer_init (GimpTextLayer *layer)
+{
+  layer->text          = NULL;
+  layer->text_parasite = NULL;
+  layer->private       = gimp_text_layer_get_instance_private (layer);
+}
+
+static void
+gimp_text_layer_finalize (GObject *object)
+{
+  GimpTextLayer *layer = GIMP_TEXT_LAYER (object);
+
+  g_clear_object (&layer->text);
+
+  G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static void
+gimp_text_layer_get_property (GObject      *object,
+                              guint         property_id,
+                              GValue       *value,
+                              GParamSpec   *pspec)
+{
+  GimpTextLayer *text_layer = GIMP_TEXT_LAYER (object);
+
+  switch (property_id)
+    {
+    case PROP_TEXT:
+      g_value_set_object (value, text_layer->text);
+      break;
+    case PROP_AUTO_RENAME:
+      g_value_set_boolean (value, text_layer->auto_rename);
+      break;
+    case PROP_MODIFIED:
+      g_value_set_boolean (value, text_layer->modified);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+gimp_text_layer_set_property (GObject      *object,
+                              guint         property_id,
+                              const GValue *value,
+                              GParamSpec   *pspec)
+{
+  GimpTextLayer *text_layer = GIMP_TEXT_LAYER (object);
+
+  switch (property_id)
+    {
+    case PROP_TEXT:
+      gimp_text_layer_set_text (text_layer, g_value_get_object (value));
+      break;
+    case PROP_AUTO_RENAME:
+      text_layer->auto_rename = g_value_get_boolean (value);
+      break;
+    case PROP_MODIFIED:
+      text_layer->modified = g_value_get_boolean (value);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static gint64
+gimp_text_layer_get_memsize (GimpObject *object,
+                             gint64     *gui_size)
+{
+  GimpTextLayer *text_layer = GIMP_TEXT_LAYER (object);
+  gint64         memsize    = 0;
+
+  memsize += gimp_object_get_memsize (GIMP_OBJECT (text_layer->text),
+                                      gui_size);
+
+  return memsize + GIMP_OBJECT_CLASS (parent_class)->get_memsize (object,
+                                                                  gui_size);
+}
+
+static GimpItem *
+gimp_text_layer_duplicate (GimpItem *item,
+                           GType     new_type)
+{
+  GimpItem *new_item;
+
+  g_return_val_if_fail (g_type_is_a (new_type, GIMP_TYPE_DRAWABLE), NULL);
+
+  new_item = GIMP_ITEM_CLASS (parent_class)->duplicate (item, new_type);
+
+  if (GIMP_IS_TEXT_LAYER (new_item))
+    {
+      GimpTextLayer *layer     = GIMP_TEXT_LAYER (item);
+      GimpTextLayer *new_layer = GIMP_TEXT_LAYER (new_item);
+
+      gimp_config_sync (G_OBJECT (layer), G_OBJECT (new_layer), 0);
+
+      if (layer->text)
+        {
+          GimpText *text = gimp_config_duplicate (GIMP_CONFIG (layer->text));
+
+          gimp_text_layer_set_text (new_layer, text);
+
+          g_object_unref (text);
+        }
+
+      /*  this is just the parasite name, not a pointer to the parasite  */
+      if (layer->text_parasite)
+        new_layer->text_parasite = layer->text_parasite;
+
+      new_layer->private->base_dir = layer->private->base_dir;
+    }
+
+  return new_item;
+}
+
+static gboolean
+gimp_text_layer_rename (GimpItem     *item,
+                        const gchar  *new_name,
+                        const gchar  *undo_desc,
+                        GError      **error)
+{
+  if (GIMP_ITEM_CLASS (parent_class)->rename (item, new_name, undo_desc, error))
+    {
+      g_object_set (item, "auto-rename", FALSE, NULL);
+
+      return TRUE;
+    }
+
+  return FALSE;
+}
+
+static void
+gimp_text_layer_set_buffer (GimpDrawable        *drawable,
+                            gboolean             push_undo,
+                            const gchar         *undo_desc,
+                            GeglBuffer          *buffer,
+                            const GeglRectangle *bounds)
+{
+  GimpTextLayer *layer = GIMP_TEXT_LAYER (drawable);
+  GimpImage     *image = gimp_item_get_image (GIMP_ITEM (layer));
+
+  if (push_undo && ! layer->modified)
+    gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_DRAWABLE_MOD,
+                                 undo_desc);
+
+  GIMP_DRAWABLE_CLASS (parent_class)->set_buffer (drawable,
+                                                  push_undo, undo_desc,
+                                                  buffer, bounds);
+
+  if (push_undo && ! layer->modified)
+    {
+      gimp_image_undo_push_text_layer_modified (image, NULL, layer);
+
+      g_object_set (drawable, "modified", TRUE, NULL);
+
+      gimp_image_undo_group_end (image);
+    }
+}
+
+static void
+gimp_text_layer_push_undo (GimpDrawable *drawable,
+                           const gchar  *undo_desc,
+                           GeglBuffer   *buffer,
+                           gint          x,
+                           gint          y,
+                           gint          width,
+                           gint          height)
+{
+  GimpTextLayer *layer = GIMP_TEXT_LAYER (drawable);
+  GimpImage     *image = gimp_item_get_image (GIMP_ITEM (layer));
+
+  if (! layer->modified)
+    gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_DRAWABLE, undo_desc);
+
+  GIMP_DRAWABLE_CLASS (parent_class)->push_undo (drawable, undo_desc,
+                                                 buffer,
+                                                 x, y, width, height);
+
+  if (! layer->modified)
+    {
+      gimp_image_undo_push_text_layer_modified (image, NULL, layer);
+
+      g_object_set (drawable, "modified", TRUE, NULL);
+
+      gimp_image_undo_group_end (image);
+    }
+}
+
+static void
+gimp_text_layer_convert_type (GimpLayer         *layer,
+                              GimpImage         *dest_image,
+                              const Babl        *new_format,
+                              GimpColorProfile  *dest_profile,
+                              GeglDitherMethod   layer_dither_type,
+                              GeglDitherMethod   mask_dither_type,
+                              gboolean           push_undo,
+                              GimpProgress      *progress)
+{
+  GimpTextLayer *text_layer = GIMP_TEXT_LAYER (layer);
+  GimpImage     *image      = gimp_item_get_image (GIMP_ITEM (text_layer));
+
+  if (! text_layer->text   ||
+      text_layer->modified ||
+      layer_dither_type != GEGL_DITHER_NONE)
+    {
+      GIMP_LAYER_CLASS (parent_class)->convert_type (layer, dest_image,
+                                                     new_format,
+                                                     dest_profile,
+                                                     layer_dither_type,
+                                                     mask_dither_type,
+                                                     push_undo,
+                                                     progress);
+    }
+  else
+    {
+      if (push_undo)
+        gimp_image_undo_push_text_layer_convert (image, NULL, text_layer);
+
+      text_layer->convert_format = new_format;
+
+      gimp_text_layer_render (text_layer);
+
+      text_layer->convert_format = NULL;
+    }
+}
+
+
+/*  public functions  */
+
+/**
+ * gimp_text_layer_new:
+ * @image: the #GimpImage the layer should belong to
+ * @text: a #GimpText object
+ *
+ * Creates a new text layer.
+ *
+ * Return value: a new #GimpTextLayer or %NULL in case of a problem
+ **/
+GimpLayer *
+gimp_text_layer_new (GimpImage *image,
+                     GimpText  *text)
+{
+  GimpTextLayer *layer;
+
+  g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
+  g_return_val_if_fail (GIMP_IS_TEXT (text), NULL);
+
+  if (! text->text && ! text->markup)
+    return NULL;
+
+  layer =
+    GIMP_TEXT_LAYER (gimp_drawable_new (GIMP_TYPE_TEXT_LAYER,
+                                        image, NULL,
+                                        0, 0, 1, 1,
+                                        gimp_image_get_layer_format (image,
+                                                                     TRUE)));
+
+  gimp_layer_set_mode (GIMP_LAYER (layer),
+                       gimp_image_get_default_new_layer_mode (image),
+                       FALSE);
+
+  gimp_text_layer_set_text (layer, text);
+
+  if (! gimp_text_layer_render (layer))
+    {
+      g_object_unref (layer);
+      return NULL;
+    }
+
+  return GIMP_LAYER (layer);
+}
+
+void
+gimp_text_layer_set_text (GimpTextLayer *layer,
+                          GimpText      *text)
+{
+  g_return_if_fail (GIMP_IS_TEXT_LAYER (layer));
+  g_return_if_fail (text == NULL || GIMP_IS_TEXT (text));
+
+  if (layer->text == text)
+    return;
+
+  if (layer->text)
+    {
+      g_signal_handlers_disconnect_by_func (layer->text,
+                                            G_CALLBACK (gimp_text_layer_text_changed),
+                                            layer);
+
+      g_clear_object (&layer->text);
+    }
+
+  if (text)
+    {
+      layer->text = g_object_ref (text);
+      layer->private->base_dir = layer->text->base_dir;
+
+      g_signal_connect_object (text, "changed",
+                               G_CALLBACK (gimp_text_layer_text_changed),
+                               layer, G_CONNECT_SWAPPED);
+    }
+
+  g_object_notify (G_OBJECT (layer), "text");
+  gimp_viewable_invalidate_preview (GIMP_VIEWABLE (layer));
+}
+
+GimpText *
+gimp_text_layer_get_text (GimpTextLayer *layer)
+{
+  g_return_val_if_fail (GIMP_IS_TEXT_LAYER (layer), NULL);
+
+  return layer->text;
+}
+
+void
+gimp_text_layer_set (GimpTextLayer *layer,
+                     const gchar   *undo_desc,
+                     const gchar   *first_property_name,
+                     ...)
+{
+  GimpImage *image;
+  GimpText  *text;
+  va_list    var_args;
+
+  g_return_if_fail (gimp_item_is_text_layer (GIMP_ITEM (layer)));
+  g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (layer)));
+
+  text = gimp_text_layer_get_text (layer);
+  if (! text)
+    return;
+
+  image = gimp_item_get_image (GIMP_ITEM (layer));
+
+  gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_TEXT, undo_desc);
+
+  g_object_freeze_notify (G_OBJECT (layer));
+
+  if (layer->modified)
+    {
+      gimp_image_undo_push_text_layer_modified (image, NULL, layer);
+
+      /*  pass copy_tiles = TRUE so we not only ref the tiles; after
+       *  being a text layer again, undo doesn't care about the
+       *  layer's pixels any longer because they are generated, so
+       *  changing the text would happily overwrite the layer's
+       *  pixels, changing the pixels on the undo stack too without
+       *  any chance to ever undo again.
+       */
+      gimp_image_undo_push_drawable_mod (image, NULL,
+                                         GIMP_DRAWABLE (layer), TRUE);
+    }
+
+  gimp_image_undo_push_text_layer (image, undo_desc, layer, NULL);
+
+  va_start (var_args, first_property_name);
+
+  g_object_set_valist (G_OBJECT (text), first_property_name, var_args);
+
+  va_end (var_args);
+
+  g_object_set (layer, "modified", FALSE, NULL);
+
+  g_object_thaw_notify (G_OBJECT (layer));
+
+  gimp_image_undo_group_end (image);
+}
+
+/**
+ * gimp_text_layer_discard:
+ * @layer: a #GimpTextLayer
+ *
+ * Discards the text information. This makes @layer behave like a
+ * normal layer.
+ */
+void
+gimp_text_layer_discard (GimpTextLayer *layer)
+{
+  g_return_if_fail (GIMP_IS_TEXT_LAYER (layer));
+  g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (layer)));
+
+  if (! layer->text)
+    return;
+
+  gimp_image_undo_push_text_layer (gimp_item_get_image (GIMP_ITEM (layer)),
+                                   _("Discard Text Information"),
+                                   layer, NULL);
+
+  gimp_text_layer_set_text (layer, NULL);
+}
+
+gboolean
+gimp_item_is_text_layer (GimpItem *item)
+{
+  return (GIMP_IS_TEXT_LAYER (item)    &&
+          GIMP_TEXT_LAYER (item)->text &&
+          GIMP_TEXT_LAYER (item)->modified == FALSE);
+}
+
+
+/*  private functions  */
+
+static const Babl *
+gimp_text_layer_get_format (GimpTextLayer *layer)
+{
+  if (layer->convert_format)
+    return layer->convert_format;
+
+  return gimp_drawable_get_format (GIMP_DRAWABLE (layer));
+}
+
+static void
+gimp_text_layer_text_changed (GimpTextLayer *layer)
+{
+  /*  If the text layer was created from a parasite, it's time to
+   *  remove that parasite now.
+   */
+  if (layer->text_parasite)
+    {
+      /*  Don't push an undo because the parasite only exists temporarily
+       *  while the text layer is loaded from XCF.
+       */
+      gimp_item_parasite_detach (GIMP_ITEM (layer), layer->text_parasite,
+                                 FALSE);
+      layer->text_parasite = NULL;
+    }
+
+  if (layer->text->box_mode == GIMP_TEXT_BOX_DYNAMIC)
+    {
+      gint                old_width;
+      gint                new_width;
+      GimpItem           *item         = GIMP_ITEM (layer);
+      GimpTextDirection   old_base_dir = layer->private->base_dir;
+      GimpTextDirection   new_base_dir = layer->text->base_dir;
+
+      old_width = gimp_item_get_width (item);
+      gimp_text_layer_render (layer);
+      new_width = gimp_item_get_width (item);
+
+      if (old_base_dir != new_base_dir)
+        {
+          switch (old_base_dir)
+            {
+            case GIMP_TEXT_DIRECTION_LTR:
+            case GIMP_TEXT_DIRECTION_RTL:
+            case GIMP_TEXT_DIRECTION_TTB_LTR:
+            case GIMP_TEXT_DIRECTION_TTB_LTR_UPRIGHT:
+              switch (new_base_dir)
+                {
+                case GIMP_TEXT_DIRECTION_TTB_RTL:
+                case GIMP_TEXT_DIRECTION_TTB_RTL_UPRIGHT:
+                  gimp_item_translate (item, -new_width, 0, FALSE);
+                  break;
+
+                case GIMP_TEXT_DIRECTION_LTR:
+                case GIMP_TEXT_DIRECTION_RTL:
+                case GIMP_TEXT_DIRECTION_TTB_LTR:
+                case GIMP_TEXT_DIRECTION_TTB_LTR_UPRIGHT:
+                  break;
+                }
+              break;
+
+            case GIMP_TEXT_DIRECTION_TTB_RTL:
+            case GIMP_TEXT_DIRECTION_TTB_RTL_UPRIGHT:
+              switch (new_base_dir)
+                {
+                case GIMP_TEXT_DIRECTION_LTR:
+                case GIMP_TEXT_DIRECTION_RTL:
+                case GIMP_TEXT_DIRECTION_TTB_LTR:
+                case GIMP_TEXT_DIRECTION_TTB_LTR_UPRIGHT:
+                  gimp_item_translate (item, old_width, 0, FALSE);
+                  break;
+
+                case GIMP_TEXT_DIRECTION_TTB_RTL:
+                case GIMP_TEXT_DIRECTION_TTB_RTL_UPRIGHT:
+                  break;
+                }
+              break;
+            }
+        }
+      else if ((new_base_dir == GIMP_TEXT_DIRECTION_TTB_RTL ||
+              new_base_dir == GIMP_TEXT_DIRECTION_TTB_RTL_UPRIGHT))
+        {
+          if (old_width != new_width)
+            gimp_item_translate (item, old_width - new_width, 0, FALSE);
+        }
+    }
+  else
+    gimp_text_layer_render (layer);
+
+  layer->private->base_dir = layer->text->base_dir;
+}
+
+static gboolean
+gimp_text_layer_render (GimpTextLayer *layer)
+{
+  GimpDrawable   *drawable;
+  GimpItem       *item;
+  GimpImage      *image;
+  GimpContainer  *container;
+  GimpTextLayout *layout;
+  gdouble         xres;
+  gdouble         yres;
+  gint            width;
+  gint            height;
+  GError         *error = NULL;
+
+  if (! layer->text)
+    return FALSE;
+
+  drawable  = GIMP_DRAWABLE (layer);
+  item      = GIMP_ITEM (layer);
+  image     = gimp_item_get_image (item);
+  container = gimp_data_factory_get_container (image->gimp->font_factory);
+
+  gimp_data_factory_data_wait (image->gimp->font_factory);
+
+  if (gimp_container_is_empty (container))
+    {
+      gimp_message_literal (image->gimp, NULL, GIMP_MESSAGE_ERROR,
+                            _("Due to lack of any fonts, "
+                              "text functionality is not available."));
+      return FALSE;
+    }
+
+  gimp_image_get_resolution (image, &xres, &yres);
+
+  layout = gimp_text_layout_new (layer->text, xres, yres, &error);
+  if (error)
+    {
+      gimp_message_literal (image->gimp, NULL, GIMP_MESSAGE_ERROR, error->message);
+      g_error_free (error);
+    }
+
+  g_object_freeze_notify (G_OBJECT (drawable));
+
+  if (gimp_text_layout_get_size (layout, &width, &height) &&
+      (width  != gimp_item_get_width  (item) ||
+       height != gimp_item_get_height (item) ||
+       gimp_text_layer_get_format (layer) !=
+       gimp_drawable_get_format (drawable)))
+    {
+      GeglBuffer *new_buffer;
+
+      new_buffer = gegl_buffer_new (GEGL_RECTANGLE (0, 0, width, height),
+                                    gimp_text_layer_get_format (layer));
+      gimp_drawable_set_buffer (drawable, FALSE, NULL, new_buffer);
+      g_object_unref (new_buffer);
+
+      if (gimp_layer_get_mask (GIMP_LAYER (layer)))
+        {
+          GimpLayerMask *mask = gimp_layer_get_mask (GIMP_LAYER (layer));
+
+          static GimpContext *unused_eek = NULL;
+
+          if (! unused_eek)
+            unused_eek = gimp_context_new (image->gimp, "eek", NULL);
+
+          gimp_item_resize (GIMP_ITEM (mask),
+                            unused_eek, GIMP_FILL_TRANSPARENT,
+                            width, height, 0, 0);
+        }
+    }
+
+  if (layer->auto_rename)
+    {
+      GimpItem *item = GIMP_ITEM (layer);
+      gchar    *name = NULL;
+
+      if (layer->text->text)
+        {
+          name = gimp_utf8_strtrim (layer->text->text, 30);
+        }
+      else if (layer->text->markup)
+        {
+          gchar *tmp = gimp_markup_extract_text (layer->text->markup);
+          name = gimp_utf8_strtrim (tmp, 30);
+          g_free (tmp);
+        }
+
+      if (! name || ! name[0])
+        {
+          g_free (name);
+          name = g_strdup (_("Empty Text Layer"));
+        }
+
+      if (gimp_item_is_attached (item))
+        {
+          gimp_item_tree_rename_item (gimp_item_get_tree (item), item,
+                                      name, FALSE, NULL);
+          g_free (name);
+        }
+      else
+        {
+          gimp_object_take_name (GIMP_OBJECT (layer), name);
+        }
+    }
+
+  if (width > 0 && height > 0)
+    gimp_text_layer_render_layout (layer, layout);
+
+  g_object_unref (layout);
+
+  g_object_thaw_notify (G_OBJECT (drawable));
+
+  return (width > 0 && height > 0);
+}
+
+static void
+gimp_text_layer_render_layout (GimpTextLayer  *layer,
+                               GimpTextLayout *layout)
+{
+  GimpDrawable       *drawable = GIMP_DRAWABLE (layer);
+  GimpItem           *item     = GIMP_ITEM (layer);
+  GimpImage          *image    = gimp_item_get_image (item);
+  GeglBuffer         *buffer;
+  GimpColorTransform *transform;
+  cairo_t            *cr;
+  cairo_surface_t    *surface;
+  gint                width;
+  gint                height;
+  cairo_status_t      status;
+
+  g_return_if_fail (gimp_drawable_has_alpha (drawable));
+
+  width  = gimp_item_get_width  (item);
+  height = gimp_item_get_height (item);
+
+  surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
+  status = cairo_surface_status (surface);
+
+  if (status != CAIRO_STATUS_SUCCESS)
+    {
+      GimpImage *image = gimp_item_get_image (item);
+
+      gimp_message_literal (image->gimp, NULL, GIMP_MESSAGE_ERROR,
+                            _("Your text cannot be rendered. It is likely too big. "
+                              "Please make it shorter or use a smaller font."));
+      cairo_surface_destroy (surface);
+      return;
+    }
+
+  cr = cairo_create (surface);
+  gimp_text_layout_render (layout, cr, layer->text->base_dir, FALSE);
+  cairo_destroy (cr);
+
+  cairo_surface_flush (surface);
+
+  buffer = gimp_cairo_surface_create_buffer (surface);
+
+  transform = gimp_image_get_color_transform_from_srgb_u8 (image);
+
+  if (transform)
+    {
+      gimp_color_transform_process_buffer (transform,
+                                           buffer,
+                                           NULL,
+                                           gimp_drawable_get_buffer (drawable),
+                                           NULL);
+    }
+  else
+    {
+      gimp_gegl_buffer_copy (buffer, NULL, GEGL_ABYSS_NONE,
+                             gimp_drawable_get_buffer (drawable), NULL);
+    }
+
+  g_object_unref (buffer);
+  cairo_surface_destroy (surface);
+
+  gimp_drawable_update (drawable, 0, 0, width, height);
+}