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gimp/app/core/gimpunit.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995-1999 Spencer Kimball and Peter Mattis
*
* gimpunit.c
* Copyright (C) 1999-2000 Michael Natterer <mitch@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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <glib.h>
#include "unitrc.h"
#include "app_procs.h"
#include "gimprc.h"
/* NOTE:
*
* one of our header files is in libgimp/ (see the note there)
*/
#include "libgimp/gimpunit.h"
#include "libgimp/gimpenv.h"
#include "libgimp/gimpintl.h"
/* internal structures */
typedef struct
{
gboolean delete_on_exit;
gdouble factor;
gint digits;
gchar *identifier;
gchar *symbol;
gchar *abbreviation;
gchar *singular;
gchar *plural;
} GimpUnitDef;
/* these are the built-in units
*/
static GimpUnitDef gimp_unit_defs[GIMP_UNIT_END] =
{
/* pseudo unit */
{ FALSE, 0.0, 0, "pixels", "px", "px", N_("pixel"), N_("pixels") },
/* standard units */
{ FALSE, 1.0, 2, "inches", "''", "in", N_("inch"), N_("inches") },
{ FALSE, 25.4, 1, "millimeters", "mm", "mm", N_("millimeter"), N_("millimeters") },
/* professional units */
{ FALSE, 72.0, 0, "points", "pt", "pt", N_("point"), N_("points") },
{ FALSE, 6.0, 1, "picas", "pc", "pc", N_("pica"), N_("picas") },
};
/* not a unit at all but kept here to have the strings in one place
*/
static GimpUnitDef gimp_unit_percent =
{
FALSE, 0.0, 0, "percent", "%", "%", N_("percent"), N_("percent")
};
static GSList* user_units = NULL;
static gint number_of_user_units = 0;
/* private functions */
static GimpUnitDef *
gimp_unit_get_user_unit (GimpUnit unit)
{
return g_slist_nth_data (user_units, unit - GIMP_UNIT_END);
}
/* public functions */
gint
gimp_unit_get_number_of_units (void)
{
return GIMP_UNIT_END + number_of_user_units;
}
gint
gimp_unit_get_number_of_built_in_units (void)
{
return GIMP_UNIT_END;
}
GimpUnit
gimp_unit_new (gchar *identifier,
gdouble factor,
gint digits,
gchar *symbol,
gchar *abbreviation,
gchar *singular,
gchar *plural)
{
GimpUnitDef *user_unit;
user_unit = g_new (GimpUnitDef, 1);
user_unit->delete_on_exit = TRUE;
user_unit->factor = factor;
user_unit->digits = digits;
user_unit->identifier = g_strdup (identifier);
user_unit->symbol = g_strdup (symbol);
user_unit->abbreviation = g_strdup (abbreviation);
user_unit->singular = g_strdup (singular);
user_unit->plural = g_strdup (plural);
user_units = g_slist_append (user_units, user_unit);
number_of_user_units++;
return GIMP_UNIT_END + number_of_user_units - 1;
}
gboolean
gimp_unit_get_deletion_flag (GimpUnit unit)
{
g_return_val_if_fail ((unit >= GIMP_UNIT_PIXEL) &&
(unit < (GIMP_UNIT_END + number_of_user_units)), FALSE);
if (unit < GIMP_UNIT_END)
return FALSE;
return gimp_unit_get_user_unit (unit)->delete_on_exit;
}
void
gimp_unit_set_deletion_flag (GimpUnit unit,
gboolean deletion_flag)
{
g_return_if_fail ((unit >= GIMP_UNIT_END) &&
(unit < (GIMP_UNIT_END + number_of_user_units)));
gimp_unit_get_user_unit (unit)->delete_on_exit =
deletion_flag ? TRUE : FALSE;
}
gdouble
gimp_unit_get_factor (GimpUnit unit)
{
g_return_val_if_fail ((unit >= GIMP_UNIT_PIXEL) &&
(unit < (GIMP_UNIT_END + number_of_user_units)),
gimp_unit_defs[GIMP_UNIT_INCH].factor);
if (unit < GIMP_UNIT_END)
return gimp_unit_defs[unit].factor;
return gimp_unit_get_user_unit (unit)->factor;
}
gint
gimp_unit_get_digits (GimpUnit unit)
{
g_return_val_if_fail ((unit >= GIMP_UNIT_PIXEL) &&
(unit < (GIMP_UNIT_END + number_of_user_units)),
gimp_unit_defs[GIMP_UNIT_INCH].digits);
if (unit < GIMP_UNIT_END)
return gimp_unit_defs[unit].digits;
return gimp_unit_get_user_unit (unit)->digits;
}
gchar *
gimp_unit_get_identifier (GimpUnit unit)
{
g_return_val_if_fail ((unit >= GIMP_UNIT_PIXEL) &&
(unit < (GIMP_UNIT_END + number_of_user_units)) ||
(unit == GIMP_UNIT_PERCENT),
gimp_unit_defs[GIMP_UNIT_INCH].identifier);
if (unit < GIMP_UNIT_END)
return gimp_unit_defs[unit].identifier;
if (unit == GIMP_UNIT_PERCENT)
return gimp_unit_percent.identifier;
return gimp_unit_get_user_unit (unit)->identifier;
}
gchar *
gimp_unit_get_symbol (GimpUnit unit)
{
g_return_val_if_fail ((unit >= GIMP_UNIT_PIXEL) &&
(unit < (GIMP_UNIT_END + number_of_user_units)) ||
(unit == GIMP_UNIT_PERCENT),
gimp_unit_defs[GIMP_UNIT_INCH].symbol);
if (unit < GIMP_UNIT_END)
return gimp_unit_defs[unit].symbol;
if (unit == GIMP_UNIT_PERCENT)
return gimp_unit_percent.symbol;
return gimp_unit_get_user_unit (unit)->symbol;
}
gchar *
gimp_unit_get_abbreviation (GimpUnit unit)
{
g_return_val_if_fail ((unit >= GIMP_UNIT_PIXEL) &&
(unit < (GIMP_UNIT_END + number_of_user_units)) ||
(unit == GIMP_UNIT_PERCENT),
gimp_unit_defs[GIMP_UNIT_INCH].abbreviation);
if (unit < GIMP_UNIT_END)
return gimp_unit_defs[unit].abbreviation;
if (unit == GIMP_UNIT_PERCENT)
return gimp_unit_percent.abbreviation;
return gimp_unit_get_user_unit (unit)->abbreviation;
}
gchar *
gimp_unit_get_singular (GimpUnit unit)
{
g_return_val_if_fail ((unit >= GIMP_UNIT_PIXEL) &&
(unit < (GIMP_UNIT_END + number_of_user_units)) ||
(unit == GIMP_UNIT_PERCENT),
gettext (gimp_unit_defs[GIMP_UNIT_INCH].singular));
if (unit < GIMP_UNIT_END)
return gettext (gimp_unit_defs[unit].singular);
if (unit == GIMP_UNIT_PERCENT)
return gettext (gimp_unit_percent.singular);
return gettext (gimp_unit_get_user_unit (unit)->singular);
}
gchar *
gimp_unit_get_plural (GimpUnit unit)
{
g_return_val_if_fail ((unit >= GIMP_UNIT_PIXEL) &&
(unit < (GIMP_UNIT_END + number_of_user_units)) ||
(unit == GIMP_UNIT_PERCENT),
gettext (gimp_unit_defs[GIMP_UNIT_INCH].plural));
if (unit < GIMP_UNIT_END)
return gettext (gimp_unit_defs[unit].plural);
if (unit == GIMP_UNIT_PERCENT)
return gettext (gimp_unit_percent.plural);
return gettext (gimp_unit_get_user_unit (unit)->plural);
}
/* unitrc functions **********/
void
parse_unitrc (void)
{
gchar *filename;
filename = gimp_personal_rc_file ("unitrc");
parse_gimprc_file (filename);
g_free (filename);
}
void
save_unitrc (void)
{
gint i;
gchar *filename;
FILE *fp;
filename = gimp_personal_rc_file ("unitrc");
fp = fopen (filename, "w");
g_free (filename);
if (!fp)
return;
fprintf (fp,
"# GIMP unitrc\n"
"# This file contains your user unit database. You can\n"
"# modify this list with the unit editor. You are not\n"
"# supposed to edit it manually, but of course you can do.\n"
"# This file will be entirely rewritten every time you\n"
"# quit the gimp.\n\n");
/* save user defined units */
for (i = gimp_unit_get_number_of_built_in_units ();
i < gimp_unit_get_number_of_units ();
i++)
if (gimp_unit_get_deletion_flag (i) == FALSE)
{
fprintf (fp,
"(unit-info \"%s\"\n"
" (factor %f)\n"
" (digits %d)\n"
" (symbol \"%s\")\n"
" (abbreviation \"%s\")\n"
" (singular \"%s\")\n"
" (plural \"%s\"))\n\n",
gimp_unit_get_identifier (i),
gimp_unit_get_factor (i),
gimp_unit_get_digits (i),
gimp_unit_get_symbol (i),
gimp_unit_get_abbreviation (i),
gimp_unit_get_singular (i),
gimp_unit_get_plural (i));
}
fclose (fp);
}
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