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gimp/app/core/gimpunit.c

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/* GIMP - The GNU 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 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/>.
*/
/* This file contains the definition of the size unit objects. The
* factor of the units is relative to inches (which have a factor of 1).
*/
#include "config.h"
#include <gio/gio.h>
#include "libgimpbase/gimpbase.h"
#include "core-types.h"
#include "gimp.h"
#include "gimpunit.h"
#include "gimp-intl.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 const GimpUnitDef gimp_unit_defs[GIMP_UNIT_END] =
{
/* pseudo unit */
{ FALSE, 0.0, 0, "pixels", "px", "px",
NC_("unit-singular", "pixel"), NC_("unit-plural", "pixels") },
/* standard units */
{ FALSE, 1.0, 2, "inches", "''", "in",
NC_("unit-singular", "inch"), NC_("unit-plural", "inches") },
{ FALSE, 25.4, 1, "millimeters", "mm", "mm",
NC_("unit-singular", "millimeter"), NC_("unit-plural", "millimeters") },
/* professional units */
{ FALSE, 72.0, 0, "points", "pt", "pt",
NC_("unit-singular", "point"), NC_("unit-plural", "points") },
{ FALSE, 6.0, 1, "picas", "pc", "pc",
NC_("unit-singular", "pica"), NC_("unit-plural", "picas") }
};
/* not a unit at all but kept here to have the strings in one place
*/
static const GimpUnitDef gimp_unit_percent =
{
FALSE, 0.0, 0, "percent", "%", "%",
NC_("singular", "percent"), NC_("plural", "percent")
};
/* private functions */
static GimpUnitDef *
_gimp_unit_get_user_unit (Gimp *gimp,
GimpUnit unit)
{
return g_list_nth_data (gimp->user_units, unit - GIMP_UNIT_END);
}
/* public functions */
gint
_gimp_unit_get_number_of_units (Gimp *gimp)
{
return GIMP_UNIT_END + gimp->n_user_units;
}
gint
_gimp_unit_get_number_of_built_in_units (Gimp *gimp)
{
return GIMP_UNIT_END;
}
GimpUnit
_gimp_unit_new (Gimp *gimp,
const gchar *identifier,
gdouble factor,
gint digits,
const gchar *symbol,
const gchar *abbreviation,
const gchar *singular,
const gchar *plural)
{
GimpUnitDef *user_unit = g_slice_new0 (GimpUnitDef);
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);
gimp->user_units = g_list_append (gimp->user_units, user_unit);
gimp->n_user_units++;
return GIMP_UNIT_END + gimp->n_user_units - 1;
}
gboolean
_gimp_unit_get_deletion_flag (Gimp *gimp,
GimpUnit unit)
{
g_return_val_if_fail (unit < (GIMP_UNIT_END + gimp->n_user_units), FALSE);
if (unit < GIMP_UNIT_END)
return FALSE;
return _gimp_unit_get_user_unit (gimp, unit)->delete_on_exit;
}
void
_gimp_unit_set_deletion_flag (Gimp *gimp,
GimpUnit unit,
gboolean deletion_flag)
{
g_return_if_fail ((unit >= GIMP_UNIT_END) &&
(unit < (GIMP_UNIT_END + gimp->n_user_units)));
_gimp_unit_get_user_unit (gimp, unit)->delete_on_exit =
deletion_flag ? TRUE : FALSE;
}
gdouble
_gimp_unit_get_factor (Gimp *gimp,
GimpUnit unit)
{
g_return_val_if_fail (unit < (GIMP_UNIT_END + gimp->n_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 (gimp, unit)->factor;
}
gint
_gimp_unit_get_digits (Gimp *gimp,
GimpUnit unit)
{
g_return_val_if_fail (unit < (GIMP_UNIT_END + gimp->n_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 (gimp, unit)->digits;
}
const gchar *
_gimp_unit_get_identifier (Gimp *gimp,
GimpUnit unit)
{
g_return_val_if_fail ((unit < (GIMP_UNIT_END + gimp->n_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 (gimp, unit)->identifier;
}
const gchar *
_gimp_unit_get_symbol (Gimp *gimp,
GimpUnit unit)
{
g_return_val_if_fail ((unit < (GIMP_UNIT_END + gimp->n_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 (gimp, unit)->symbol;
}
const gchar *
_gimp_unit_get_abbreviation (Gimp *gimp,
GimpUnit unit)
{
g_return_val_if_fail ((unit < (GIMP_UNIT_END + gimp->n_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 (gimp, unit)->abbreviation;
}
const gchar *
_gimp_unit_get_singular (Gimp *gimp,
GimpUnit unit)
{
g_return_val_if_fail ((unit < (GIMP_UNIT_END + gimp->n_user_units)) ||
(unit == GIMP_UNIT_PERCENT),
gimp_unit_defs[GIMP_UNIT_INCH].singular);
if (unit < GIMP_UNIT_END)
return g_dpgettext2 (NULL, "unit-singular", gimp_unit_defs[unit].singular);
if (unit == GIMP_UNIT_PERCENT)
return g_dpgettext2 (NULL, "unit-singular", gimp_unit_percent.singular);
return _gimp_unit_get_user_unit (gimp, unit)->singular;
}
const gchar *
_gimp_unit_get_plural (Gimp *gimp,
GimpUnit unit)
{
g_return_val_if_fail ((unit < (GIMP_UNIT_END + gimp->n_user_units)) ||
(unit == GIMP_UNIT_PERCENT),
gimp_unit_defs[GIMP_UNIT_INCH].plural);
if (unit < GIMP_UNIT_END)
return g_dpgettext2 (NULL, "unit-plural", gimp_unit_defs[unit].plural);
if (unit == GIMP_UNIT_PERCENT)
return g_dpgettext2 (NULL, "unit-plural", gimp_unit_percent.plural);
return _gimp_unit_get_user_unit (gimp, unit)->plural;
}
/* The sole purpose of this function is to release the allocated
* memory. It must only be used from gimp_units_exit().
*/
void
gimp_user_units_free (Gimp *gimp)
{
GList *list;
for (list = gimp->user_units; list; list = g_list_next (list))
{
GimpUnitDef *user_unit = list->data;
g_free (user_unit->identifier);
g_free (user_unit->symbol);
g_free (user_unit->abbreviation);
g_free (user_unit->singular);
g_free (user_unit->plural);
g_slice_free (GimpUnitDef, user_unit);
}
g_list_free (gimp->user_units);
gimp->user_units = NULL;
gimp->n_user_units = 0;
}
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