gimp/app/text/gimptext-parasite.c

194 lines
5.2 KiB
C

/* 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 <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <string.h>
#include <stdlib.h>
#include <cairo.h>
#include <gegl.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include "libgimpbase/gimpbase.h"
#include "libgimpcolor/gimpcolor.h"
#include "libgimpconfig/gimpconfig.h"
#include "text-types.h"
#include "gimptext.h"
#include "gimptext-parasite.h"
#include "gimptext-xlfd.h"
/****************************************/
/* The native GimpTextLayer parasite. */
/****************************************/
const gchar *
gimp_text_parasite_name (void)
{
return "gimp-text-layer";
}
GimpParasite *
gimp_text_to_parasite (const GimpText *text)
{
GimpParasite *parasite;
gchar *str;
g_return_val_if_fail (GIMP_IS_TEXT (text), NULL);
str = gimp_config_serialize_to_string (GIMP_CONFIG (text), NULL);
g_return_val_if_fail (str != NULL, NULL);
parasite = gimp_parasite_new (gimp_text_parasite_name (),
GIMP_PARASITE_PERSISTENT,
strlen (str) + 1, str);
g_free (str);
return parasite;
}
GimpText *
gimp_text_from_parasite (const GimpParasite *parasite,
GError **error)
{
GimpText *text;
const gchar *str;
g_return_val_if_fail (parasite != NULL, NULL);
g_return_val_if_fail (strcmp (gimp_parasite_name (parasite),
gimp_text_parasite_name ()) == 0, NULL);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
str = gimp_parasite_data (parasite);
g_return_val_if_fail (str != NULL, NULL);
text = g_object_new (GIMP_TYPE_TEXT, NULL);
gimp_config_deserialize_string (GIMP_CONFIG (text),
str,
gimp_parasite_data_size (parasite),
NULL,
error);
return text;
}
/****************************************************************/
/* Compatibility to plug-in GDynText 1.4.4 and later versions */
/* GDynText was written by Marco Lamberto <lm@geocities.com> */
/****************************************************************/
const gchar *
gimp_text_gdyntext_parasite_name (void)
{
return "plug_in_gdyntext/data";
}
enum
{
TEXT = 0,
ANTIALIAS = 1,
ALIGNMENT = 2,
ROTATION = 3,
LINE_SPACING = 4,
COLOR = 5,
LAYER_ALIGNMENT = 6,
XLFD = 7,
NUM_PARAMS
};
GimpText *
gimp_text_from_gdyntext_parasite (const GimpParasite *parasite)
{
GimpText *retval = NULL;
GimpTextJustification justify;
const gchar *str;
gchar *text = NULL;
gchar **params;
gboolean antialias;
gdouble spacing;
GimpRGB rgb;
glong color;
gint i;
g_return_val_if_fail (parasite != NULL, NULL);
g_return_val_if_fail (strcmp (gimp_parasite_name (parasite),
gimp_text_gdyntext_parasite_name ()) == 0,
NULL);
str = gimp_parasite_data (parasite);
g_return_val_if_fail (str != NULL, NULL);
if (! g_str_has_prefix (str, "GDT10{")) /* magic value */
return NULL;
params = g_strsplit (str + strlen ("GDT10{"), "}{", -1);
/* first check that we have the required number of parameters */
for (i = 0; i < NUM_PARAMS; i++)
if (!params[i])
goto cleanup;
text = g_strcompress (params[TEXT]);
if (! g_utf8_validate (text, -1, NULL))
{
gchar *tmp = gimp_any_to_utf8 (text, -1, NULL);
g_free (text);
text = tmp;
}
antialias = atoi (params[ANTIALIAS]) ? TRUE : FALSE;
switch (atoi (params[ALIGNMENT]))
{
default:
case 0: justify = GIMP_TEXT_JUSTIFY_LEFT; break;
case 1: justify = GIMP_TEXT_JUSTIFY_CENTER; break;
case 2: justify = GIMP_TEXT_JUSTIFY_RIGHT; break;
}
spacing = g_strtod (params[LINE_SPACING], NULL);
color = strtol (params[COLOR], NULL, 16);
gimp_rgba_set_uchar (&rgb, color >> 16, color >> 8, color, 255);
retval = g_object_new (GIMP_TYPE_TEXT,
"text", text,
"antialias", antialias,
"justify", justify,
"line-spacing", spacing,
"color", &rgb,
NULL);
gimp_text_set_font_from_xlfd (GIMP_TEXT (retval), params[XLFD]);
cleanup:
g_free (text);
g_strfreev (params);
return retval;
}