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PIKApp/app/core/pikaunit.c

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/* PIKA - Photo and Image Kooker Application
* a rebranding of The GNU Image Manipulation Program (created with heckimp)
* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
*
* Original copyright, applying to most contents (license remains unchanged):
* Copyright (C) 1995-1999 Spencer Kimball and Peter Mattis
*
* pikaunit.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 <https://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 "libpikabase/pikabase.h"
#include "core-types.h"
#include "pika.h"
#include "pikaunit.h"
#include "pika-intl.h"
/* internal structures */
typedef struct
{
gboolean delete_on_exit;
gdouble factor;
gint digits;
gchar *identifier;
gchar *symbol;
gchar *abbreviation;
gchar *singular;
gchar *plural;
} PikaUnitDef;
/* these are the built-in units
*/
static const PikaUnitDef pika_unit_defs[PIKA_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 PikaUnitDef pika_unit_percent =
{
FALSE, 0.0, 0, "percent", "%", "%",
NC_("singular", "percent"), NC_("plural", "percent")
};
/* private functions */
static PikaUnitDef *
_pika_unit_get_user_unit (Pika *pika,
PikaUnit unit)
{
return g_list_nth_data (pika->user_units, unit - PIKA_UNIT_END);
}
/* public functions */
gint
_pika_unit_get_number_of_units (Pika *pika)
{
return PIKA_UNIT_END + pika->n_user_units;
}
gint
_pika_unit_get_number_of_built_in_units (Pika *pika)
{
return PIKA_UNIT_END;
}
PikaUnit
_pika_unit_new (Pika *pika,
const gchar *identifier,
gdouble factor,
gint digits,
const gchar *symbol,
const gchar *abbreviation,
const gchar *singular,
const gchar *plural)
{
PikaUnitDef *user_unit = g_slice_new0 (PikaUnitDef);
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);
pika->user_units = g_list_append (pika->user_units, user_unit);
pika->n_user_units++;
return PIKA_UNIT_END + pika->n_user_units - 1;
}
gboolean
_pika_unit_get_deletion_flag (Pika *pika,
PikaUnit unit)
{
g_return_val_if_fail (unit < (PIKA_UNIT_END + pika->n_user_units), FALSE);
if (unit < PIKA_UNIT_END)
return FALSE;
return _pika_unit_get_user_unit (pika, unit)->delete_on_exit;
}
void
_pika_unit_set_deletion_flag (Pika *pika,
PikaUnit unit,
gboolean deletion_flag)
{
g_return_if_fail ((unit >= PIKA_UNIT_END) &&
(unit < (PIKA_UNIT_END + pika->n_user_units)));
_pika_unit_get_user_unit (pika, unit)->delete_on_exit =
deletion_flag ? TRUE : FALSE;
}
gdouble
_pika_unit_get_factor (Pika *pika,
PikaUnit unit)
{
g_return_val_if_fail (unit < (PIKA_UNIT_END + pika->n_user_units) ||
(unit == PIKA_UNIT_PERCENT),
pika_unit_defs[PIKA_UNIT_INCH].factor);
if (unit < PIKA_UNIT_END)
return pika_unit_defs[unit].factor;
if (unit == PIKA_UNIT_PERCENT)
return pika_unit_percent.factor;
return _pika_unit_get_user_unit (pika, unit)->factor;
}
gint
_pika_unit_get_digits (Pika *pika,
PikaUnit unit)
{
g_return_val_if_fail (unit < (PIKA_UNIT_END + pika->n_user_units) ||
(unit == PIKA_UNIT_PERCENT),
pika_unit_defs[PIKA_UNIT_INCH].digits);
if (unit < PIKA_UNIT_END)
return pika_unit_defs[unit].digits;
if (unit == PIKA_UNIT_PERCENT)
return pika_unit_percent.digits;
return _pika_unit_get_user_unit (pika, unit)->digits;
}
const gchar *
_pika_unit_get_identifier (Pika *pika,
PikaUnit unit)
{
g_return_val_if_fail ((unit < (PIKA_UNIT_END + pika->n_user_units)) ||
(unit == PIKA_UNIT_PERCENT),
pika_unit_defs[PIKA_UNIT_INCH].identifier);
if (unit < PIKA_UNIT_END)
return pika_unit_defs[unit].identifier;
if (unit == PIKA_UNIT_PERCENT)
return pika_unit_percent.identifier;
return _pika_unit_get_user_unit (pika, unit)->identifier;
}
const gchar *
_pika_unit_get_symbol (Pika *pika,
PikaUnit unit)
{
g_return_val_if_fail ((unit < (PIKA_UNIT_END + pika->n_user_units)) ||
(unit == PIKA_UNIT_PERCENT),
pika_unit_defs[PIKA_UNIT_INCH].symbol);
if (unit < PIKA_UNIT_END)
return pika_unit_defs[unit].symbol;
if (unit == PIKA_UNIT_PERCENT)
return pika_unit_percent.symbol;
return _pika_unit_get_user_unit (pika, unit)->symbol;
}
const gchar *
_pika_unit_get_abbreviation (Pika *pika,
PikaUnit unit)
{
g_return_val_if_fail ((unit < (PIKA_UNIT_END + pika->n_user_units)) ||
(unit == PIKA_UNIT_PERCENT),
pika_unit_defs[PIKA_UNIT_INCH].abbreviation);
if (unit < PIKA_UNIT_END)
return pika_unit_defs[unit].abbreviation;
if (unit == PIKA_UNIT_PERCENT)
return pika_unit_percent.abbreviation;
return _pika_unit_get_user_unit (pika, unit)->abbreviation;
}
const gchar *
_pika_unit_get_singular (Pika *pika,
PikaUnit unit)
{
g_return_val_if_fail ((unit < (PIKA_UNIT_END + pika->n_user_units)) ||
(unit == PIKA_UNIT_PERCENT),
pika_unit_defs[PIKA_UNIT_INCH].singular);
if (unit < PIKA_UNIT_END)
return g_dpgettext2 (NULL, "unit-singular", pika_unit_defs[unit].singular);
if (unit == PIKA_UNIT_PERCENT)
return g_dpgettext2 (NULL, "unit-singular", pika_unit_percent.singular);
return _pika_unit_get_user_unit (pika, unit)->singular;
}
const gchar *
_pika_unit_get_plural (Pika *pika,
PikaUnit unit)
{
g_return_val_if_fail ((unit < (PIKA_UNIT_END + pika->n_user_units)) ||
(unit == PIKA_UNIT_PERCENT),
pika_unit_defs[PIKA_UNIT_INCH].plural);
if (unit < PIKA_UNIT_END)
return g_dpgettext2 (NULL, "unit-plural", pika_unit_defs[unit].plural);
if (unit == PIKA_UNIT_PERCENT)
return g_dpgettext2 (NULL, "unit-plural", pika_unit_percent.plural);
return _pika_unit_get_user_unit (pika, unit)->plural;
}
/* The sole purpose of this function is to release the allocated
* memory. It must only be used from pika_units_exit().
*/
void
pika_user_units_free (Pika *pika)
{
GList *list;
for (list = pika->user_units; list; list = g_list_next (list))
{
PikaUnitDef *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 (PikaUnitDef, user_unit);
}
g_list_free (pika->user_units);
pika->user_units = NULL;
pika->n_user_units = 0;
}
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