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-rw-r--r--app/text/gimptextundo.c307
1 files changed, 307 insertions, 0 deletions
diff --git a/app/text/gimptextundo.c b/app/text/gimptextundo.c
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+++ b/app/text/gimptextundo.c
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+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * 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 <gdk-pixbuf/gdk-pixbuf.h>
+#include <gegl.h>
+
+#include "libgimpconfig/gimpconfig.h"
+
+#include "text-types.h"
+
+#include "gegl/gimp-babl.h"
+
+#include "core/gimp-memsize.h"
+#include "core/gimpitem.h"
+#include "core/gimpitemundo.h"
+
+#include "gimptext.h"
+#include "gimptextlayer.h"
+#include "gimptextundo.h"
+
+
+enum
+{
+ PROP_0,
+ PROP_PARAM
+};
+
+
+static void gimp_text_undo_constructed (GObject *object);
+static void gimp_text_undo_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec);
+static void gimp_text_undo_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec);
+
+static gint64 gimp_text_undo_get_memsize (GimpObject *object,
+ gint64 *gui_size);
+
+static void gimp_text_undo_pop (GimpUndo *undo,
+ GimpUndoMode undo_mode,
+ GimpUndoAccumulator *accum);
+static void gimp_text_undo_free (GimpUndo *undo,
+ GimpUndoMode undo_mode);
+
+
+G_DEFINE_TYPE (GimpTextUndo, gimp_text_undo, GIMP_TYPE_ITEM_UNDO)
+
+#define parent_class gimp_text_undo_parent_class
+
+
+static void
+gimp_text_undo_class_init (GimpTextUndoClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+ GimpObjectClass *gimp_object_class = GIMP_OBJECT_CLASS (klass);
+ GimpUndoClass *undo_class = GIMP_UNDO_CLASS (klass);
+
+ object_class->constructed = gimp_text_undo_constructed;
+ object_class->set_property = gimp_text_undo_set_property;
+ object_class->get_property = gimp_text_undo_get_property;
+
+ gimp_object_class->get_memsize = gimp_text_undo_get_memsize;
+
+ undo_class->pop = gimp_text_undo_pop;
+ undo_class->free = gimp_text_undo_free;
+
+ g_object_class_install_property (object_class, PROP_PARAM,
+ g_param_spec_param ("param", NULL, NULL,
+ G_TYPE_PARAM,
+ GIMP_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT_ONLY));
+}
+
+static void
+gimp_text_undo_init (GimpTextUndo *undo)
+{
+}
+
+static void
+gimp_text_undo_constructed (GObject *object)
+{
+ GimpTextUndo *text_undo = GIMP_TEXT_UNDO (object);
+ GimpTextLayer *layer;
+
+ G_OBJECT_CLASS (parent_class)->constructed (object);
+
+ gimp_assert (GIMP_IS_TEXT_LAYER (GIMP_ITEM_UNDO (text_undo)->item));
+
+ layer = GIMP_TEXT_LAYER (GIMP_ITEM_UNDO (text_undo)->item);
+
+ switch (GIMP_UNDO (object)->undo_type)
+ {
+ case GIMP_UNDO_TEXT_LAYER:
+ if (text_undo->pspec)
+ {
+ gimp_assert (text_undo->pspec->owner_type == GIMP_TYPE_TEXT);
+
+ text_undo->value = g_slice_new0 (GValue);
+
+ g_value_init (text_undo->value, text_undo->pspec->value_type);
+ g_object_get_property (G_OBJECT (layer->text),
+ text_undo->pspec->name, text_undo->value);
+ }
+ else if (layer->text)
+ {
+ text_undo->text = gimp_config_duplicate (GIMP_CONFIG (layer->text));
+ }
+ break;
+
+ case GIMP_UNDO_TEXT_LAYER_MODIFIED:
+ text_undo->modified = layer->modified;
+ break;
+
+ case GIMP_UNDO_TEXT_LAYER_CONVERT:
+ text_undo->format = gimp_drawable_get_format (GIMP_DRAWABLE (layer));
+ break;
+
+ default:
+ gimp_assert_not_reached ();
+ }
+}
+
+static void
+gimp_text_undo_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ GimpTextUndo *text_undo = GIMP_TEXT_UNDO (object);
+
+ switch (property_id)
+ {
+ case PROP_PARAM:
+ text_undo->pspec = g_value_get_param (value);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static void
+gimp_text_undo_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GimpTextUndo *text_undo = GIMP_TEXT_UNDO (object);
+
+ switch (property_id)
+ {
+ case PROP_PARAM:
+ g_value_set_param (value, (GParamSpec *) text_undo->pspec);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static gint64
+gimp_text_undo_get_memsize (GimpObject *object,
+ gint64 *gui_size)
+{
+ GimpTextUndo *undo = GIMP_TEXT_UNDO (object);
+ gint64 memsize = 0;
+
+ memsize += gimp_g_value_get_memsize (undo->value);
+ memsize += gimp_object_get_memsize (GIMP_OBJECT (undo->text), NULL);
+
+ return memsize + GIMP_OBJECT_CLASS (parent_class)->get_memsize (object,
+ gui_size);
+}
+
+static void
+gimp_text_undo_pop (GimpUndo *undo,
+ GimpUndoMode undo_mode,
+ GimpUndoAccumulator *accum)
+{
+ GimpTextUndo *text_undo = GIMP_TEXT_UNDO (undo);
+ GimpTextLayer *layer = GIMP_TEXT_LAYER (GIMP_ITEM_UNDO (undo)->item);
+
+ GIMP_UNDO_CLASS (parent_class)->pop (undo, undo_mode, accum);
+
+ switch (undo->undo_type)
+ {
+ case GIMP_UNDO_TEXT_LAYER:
+ if (text_undo->pspec)
+ {
+ GValue *value;
+
+ g_return_if_fail (layer->text != NULL);
+
+ value = g_slice_new0 (GValue);
+ g_value_init (value, text_undo->pspec->value_type);
+
+ g_object_get_property (G_OBJECT (layer->text),
+ text_undo->pspec->name, value);
+
+ g_object_set_property (G_OBJECT (layer->text),
+ text_undo->pspec->name, text_undo->value);
+
+ g_value_unset (text_undo->value);
+ g_slice_free (GValue, text_undo->value);
+
+ text_undo->value = value;
+ }
+ else
+ {
+ GimpText *text;
+
+ text = (layer->text ?
+ gimp_config_duplicate (GIMP_CONFIG (layer->text)) : NULL);
+
+ if (layer->text && text_undo->text)
+ gimp_config_sync (G_OBJECT (text_undo->text),
+ G_OBJECT (layer->text), 0);
+ else
+ gimp_text_layer_set_text (layer, text_undo->text);
+
+ if (text_undo->text)
+ g_object_unref (text_undo->text);
+
+ text_undo->text = text;
+ }
+ break;
+
+ case GIMP_UNDO_TEXT_LAYER_MODIFIED:
+ {
+ gboolean modified;
+
+#if 0
+ g_print ("setting layer->modified from %s to %s\n",
+ layer->modified ? "TRUE" : "FALSE",
+ text_undo->modified ? "TRUE" : "FALSE");
+#endif
+
+ modified = layer->modified;
+ g_object_set (layer, "modified", text_undo->modified, NULL);
+ text_undo->modified = modified;
+
+ gimp_viewable_invalidate_preview (GIMP_VIEWABLE (layer));
+ }
+ break;
+
+ case GIMP_UNDO_TEXT_LAYER_CONVERT:
+ {
+ const Babl *format;
+
+ format = gimp_drawable_get_format (GIMP_DRAWABLE (layer));
+ gimp_drawable_convert_type (GIMP_DRAWABLE (layer),
+ gimp_item_get_image (GIMP_ITEM (layer)),
+ gimp_babl_format_get_base_type (text_undo->format),
+ gimp_babl_format_get_precision (text_undo->format),
+ babl_format_has_alpha (text_undo->format),
+ NULL,
+ GEGL_DITHER_NONE, GEGL_DITHER_NONE,
+ FALSE, NULL);
+ text_undo->format = format;
+ }
+ break;
+
+ default:
+ gimp_assert_not_reached ();
+ }
+}
+
+static void
+gimp_text_undo_free (GimpUndo *undo,
+ GimpUndoMode undo_mode)
+{
+ GimpTextUndo *text_undo = GIMP_TEXT_UNDO (undo);
+
+ g_clear_object (&text_undo->text);
+
+ if (text_undo->pspec)
+ {
+ g_value_unset (text_undo->value);
+ g_slice_free (GValue, text_undo->value);
+
+ text_undo->value = NULL;
+ text_undo->pspec = NULL;
+ }
+
+ GIMP_UNDO_CLASS (parent_class)->free (undo, undo_mode);
+}
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