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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* GimpText
* Copyright (C) 2003 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 <gdk-pixbuf/gdk-pixbuf.h>
#include <gegl.h>
#include <cairo.h>
#include "libgimpbase/gimpbase.h"
#include "text-types.h"
#include "core/gimp.h"
#include "core/gimpdrawable-private.h" /* eek */
#include "core/gimpimage.h"
#include "core/gimpparasitelist.h"
#include "gimptext.h"
#include "gimptext-parasite.h"
#include "gimptextlayer.h"
#include "gimptextlayer-xcf.h"
#include "gimp-intl.h"
enum
{
TEXT_LAYER_XCF_NONE = 0,
TEXT_LAYER_XCF_DONT_AUTO_RENAME = 1 << 0,
TEXT_LAYER_XCF_MODIFIED = 1 << 1
};
static GimpLayer * gimp_text_layer_from_layer (GimpLayer *layer,
GimpText *text);
gboolean
gimp_text_layer_xcf_load_hack (GimpLayer **layer)
{
const gchar *name;
GimpText *text = NULL;
const GimpParasite *parasite;
g_return_val_if_fail (layer != NULL, FALSE);
g_return_val_if_fail (GIMP_IS_LAYER (*layer), FALSE);
name = gimp_text_parasite_name ();
parasite = gimp_item_parasite_find (GIMP_ITEM (*layer), name);
if (parasite)
{
GError *error = NULL;
text = gimp_text_from_parasite (parasite, &error);
if (error)
{
gimp_message (gimp_item_get_image (GIMP_ITEM (*layer))->gimp, NULL,
GIMP_MESSAGE_ERROR,
_("Problems parsing the text parasite for layer '%s':\n"
"%s\n\n"
"Some text properties may be wrong. "
"Unless you want to edit the text layer, "
"you don't need to worry about this."),
gimp_object_get_name (*layer),
error->message);
g_clear_error (&error);
}
}
else
{
name = gimp_text_gdyntext_parasite_name ();
parasite = gimp_item_parasite_find (GIMP_ITEM (*layer), name);
if (parasite)
text = gimp_text_from_gdyntext_parasite (parasite);
}
if (text)
{
*layer = gimp_text_layer_from_layer (*layer, text);
/* let the text layer knows what parasite was used to create it */
GIMP_TEXT_LAYER (*layer)->text_parasite = name;
}
return (text != NULL);
}
void
gimp_text_layer_xcf_save_prepare (GimpTextLayer *layer)
{
GimpText *text;
g_return_if_fail (GIMP_IS_TEXT_LAYER (layer));
/* If the layer has a text parasite already, it wasn't changed and we
* can simply save the original parasite back which is still attached.
*/
if (layer->text_parasite)
return;
text = gimp_text_layer_get_text (layer);
if (text)
{
GimpParasite *parasite = gimp_text_to_parasite (text);
/* Don't push an undo because the parasite only exists temporarily
* while the text layer is saved to XCF.
*/
gimp_item_parasite_attach (GIMP_ITEM (layer), parasite, FALSE);
gimp_parasite_free (parasite);
}
}
guint32
gimp_text_layer_get_xcf_flags (GimpTextLayer *text_layer)
{
guint flags = 0;
g_return_val_if_fail (GIMP_IS_TEXT_LAYER (text_layer), 0);
if (! text_layer->auto_rename)
flags |= TEXT_LAYER_XCF_DONT_AUTO_RENAME;
if (text_layer->modified)
flags |= TEXT_LAYER_XCF_MODIFIED;
return flags;
}
void
gimp_text_layer_set_xcf_flags (GimpTextLayer *text_layer,
guint32 flags)
{
g_return_if_fail (GIMP_IS_TEXT_LAYER (text_layer));
g_object_set (text_layer,
"auto-rename", (flags & TEXT_LAYER_XCF_DONT_AUTO_RENAME) == 0,
"modified", (flags & TEXT_LAYER_XCF_MODIFIED) != 0,
NULL);
}
/**
* gimp_text_layer_from_layer:
* @layer: a #GimpLayer object
* @text: a #GimpText object
*
* Converts a standard #GimpLayer and a #GimpText object into a
* #GimpTextLayer. The new text layer takes ownership of the @text and
* @layer objects. The @layer object is rendered unusable by this
* function. Don't even try to use if afterwards!
*
* This is a gross hack that is needed in order to load text layers
* from XCF files in a backwards-compatible way. Please don't use it
* for anything else!
*
* Return value: a newly allocated #GimpTextLayer object
**/
static GimpLayer *
gimp_text_layer_from_layer (GimpLayer *layer,
GimpText *text)
{
GimpTextLayer *text_layer;
GimpDrawable *drawable;
g_return_val_if_fail (GIMP_IS_LAYER (layer), NULL);
g_return_val_if_fail (GIMP_IS_TEXT (text), NULL);
text_layer = g_object_new (GIMP_TYPE_TEXT_LAYER,
"image", gimp_item_get_image (GIMP_ITEM (layer)),
NULL);
gimp_item_replace_item (GIMP_ITEM (text_layer), GIMP_ITEM (layer));
drawable = GIMP_DRAWABLE (text_layer);
gimp_drawable_steal_buffer (drawable, GIMP_DRAWABLE (layer));
gimp_layer_set_opacity (GIMP_LAYER (text_layer),
gimp_layer_get_opacity (layer), FALSE);
gimp_layer_set_mode (GIMP_LAYER (text_layer),
gimp_layer_get_mode (layer), FALSE);
gimp_layer_set_blend_space (GIMP_LAYER (text_layer),
gimp_layer_get_blend_space (layer), FALSE);
gimp_layer_set_composite_space (GIMP_LAYER (text_layer),
gimp_layer_get_composite_space (layer), FALSE);
gimp_layer_set_composite_mode (GIMP_LAYER (text_layer),
gimp_layer_get_composite_mode (layer), FALSE);
gimp_layer_set_lock_alpha (GIMP_LAYER (text_layer),
gimp_layer_get_lock_alpha (layer), FALSE);
gimp_text_layer_set_text (text_layer, text);
g_object_unref (text);
g_object_unref (layer);
return GIMP_LAYER (text_layer);
}
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