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gimp/libgimp/gimpunitcache.c

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/* LIBGIMP - The GIMP Library
* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
*
* gimpunit.c
* Copyright (C) 1999 Michael Natterer <mitschel@cs.tu-berlin.de>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include "gimp.h"
#include "gimpunit.h"
#include "libgimp-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;
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")
};
/**
* gimp_unit_get_number_of_units:
*
* Returns the number of units which are known to the #GimpUnit system.
*
* Returns: The number of defined units.
*
*/
gint
gimp_unit_get_number_of_units (void)
{
GParam *return_vals;
gint nreturn_vals;
gint number;
return_vals = gimp_run_procedure ("gimp_unit_get_number_of_units",
&nreturn_vals,
PARAM_END);
number = GIMP_UNIT_END;
if (return_vals[0].data.d_status == STATUS_SUCCESS)
number = return_vals[1].data.d_int32;
gimp_destroy_params (return_vals, nreturn_vals);
return number;
}
/**
* gimp_unit_get_number_of_built_in_units:
*
* Returns the number of #GimpUnit's which are hardcoded in the unit system
* (UNIT_INCH, UNIT_MM, UNIT_POINT, UNIT_PICA and the two "pseudo units"
* UNIT_PIXEL and UNIT_PERCENT).
*
* Returns: The number of built-in units.
*
*/
gint
gimp_unit_get_number_of_built_in_units (void)
{
return GIMP_UNIT_END;
}
/**
* gimp_unit_new:
* @identifier: The unit's identifier string.
* @factor: The unit's factor (how many units are in one inch).
* @digits: The unit's suggested number of digits (see gimp_unit_get_digits()).
* @symbol: The symbol of the unit (e.g. "''" for inch).
* @abbreviation: The abbreviation of the unit.
* @singular: The singular form of the unit.
* @plural: The plural form of the unit.
*
* Returns the integer ID of the new #GimpUnit.
*
* Note that a new unit is always created with it's deletion flag
* set to #TRUE. You will have to set it to #FALSE with
* gimp_unit_set_deletion_flag() to make the unit definition persistent.
*
* Returns: The ID of the new unit.
*
*/
GimpUnit
gimp_unit_new (gchar *identifier,
gdouble factor,
gint digits,
gchar *symbol,
gchar *abbreviation,
gchar *singular,
gchar *plural)
{
GParam *return_vals;
gint nreturn_vals;
GimpUnit unit;
return_vals = gimp_run_procedure ("gimp_unit_new",
&nreturn_vals,
PARAM_STRING, g_strdup (identifier),
PARAM_FLOAT, factor,
PARAM_INT32, digits,
PARAM_STRING, g_strdup (symbol),
PARAM_STRING, g_strdup (abbreviation),
PARAM_STRING, g_strdup (singular),
PARAM_STRING, g_strdup (plural),
PARAM_END);
unit = GIMP_UNIT_INCH;
if (return_vals[0].data.d_status == STATUS_SUCCESS)
unit = return_vals[1].data.d_int32;
gimp_destroy_params (return_vals, nreturn_vals);
return unit;
}
/**
* gimp_unit_get_deletion_flag:
* @unit: The unit you want to know the @deletion_flag of.
*
* Returns: The unit's @deletion_flag.
*
*/
gboolean
gimp_unit_get_deletion_flag (GimpUnit unit)
{
GParam *return_vals;
gint nreturn_vals;
gboolean flag;
g_return_val_if_fail (unit >= GIMP_UNIT_PIXEL, TRUE);
if (unit < GIMP_UNIT_END)
return FALSE;
return_vals = gimp_run_procedure ("gimp_unit_get_deletion_flag",
&nreturn_vals,
PARAM_INT32, unit,
PARAM_END);
flag = TRUE;
if (return_vals[0].data.d_status == STATUS_SUCCESS)
flag = return_vals[1].data.d_int32 ? TRUE : FALSE;
gimp_destroy_params (return_vals, nreturn_vals);
return flag;
}
/**
* gimp_unit_set_deletion_flag:
* @unit: The unit you want to set the @deletion_flag for.
* @deletion_flag: The new deletion_flag.
*
* Sets a #GimpUnit's @deletion_flag. If the @deletion_flag of a unit is
* #TRUE when GIMP exits, this unit will not be saved in the uses's
* "unitrc" file.
*
* Trying to change the @deletion_flag of a built-in unit will be silently
* ignored.
*
*/
void
gimp_unit_set_deletion_flag (GimpUnit unit,
gboolean deletion_flag)
{
GParam *return_vals;
gint nreturn_vals;
g_return_if_fail (unit >= GIMP_UNIT_PIXEL);
if (unit < GIMP_UNIT_END)
return;
return_vals = gimp_run_procedure ("gimp_unit_set_deletion_flag",
&nreturn_vals,
PARAM_INT32, unit,
PARAM_INT32, deletion_flag,
PARAM_END);
gimp_destroy_params (return_vals, nreturn_vals);
}
/**
* gimp_unit_get_factor:
* @unit: The unit you want to know the factor of.
*
* A #GimpUnit's @factor is defined to be:
*
* distance_in_units == (@factor * distance_in_inches)
*
* Returns 0 for @unit == GIMP_UNIT_PIXEL.
*
* Returns: The unit's factor.
*
*/
gdouble
gimp_unit_get_factor (GimpUnit unit)
{
GParam *return_vals;
gint nreturn_vals;
gdouble factor;
g_return_val_if_fail (unit >= GIMP_UNIT_INCH, 1.0);
if (unit < GIMP_UNIT_END)
return gimp_unit_defs[unit].factor;
return_vals = gimp_run_procedure ("gimp_unit_get_factor",
&nreturn_vals,
PARAM_INT32, unit,
PARAM_END);
factor = 1.0;
if (return_vals[0].data.d_status == STATUS_SUCCESS)
factor = return_vals[1].data.d_float;
gimp_destroy_params (return_vals, nreturn_vals);
return factor;
}
/**
* gimp_unit_get_digits:
* @unit: The unit you want to know the digits.
*
* Returns the number of digits an entry field should provide to get
* approximately the same accuracy as an inch input field with two digits.
*
* Returns 0 for @unit == GIMP_UNIT_PIXEL.
*
* Returns: The suggested number of digits.
*
*/
gint
gimp_unit_get_digits (GimpUnit unit)
{
GParam *return_vals;
gint nreturn_vals;
gint digits;
if (unit < 0)
return 0;
if (unit < GIMP_UNIT_END)
return gimp_unit_defs[unit].digits;
return_vals = gimp_run_procedure ("gimp_unit_get_digits",
&nreturn_vals,
PARAM_INT32, unit,
PARAM_END);
digits = gimp_unit_defs[GIMP_UNIT_INCH].digits;
if (return_vals[0].data.d_status == STATUS_SUCCESS)
digits = return_vals[1].data.d_int32;
gimp_destroy_params (return_vals, nreturn_vals);
return digits;
}
/**
* gimp_unit_get_identifier:
* @unit: The unit you want to know the identifier of.
*
* This is an unstranslated string.
*
* NOTE: This string has to be g_free()'d by plugins but is a pointer to a
* constant string when this function is used from inside the GIMP.
*
* Returns: The unit's identifier.
*
*/
gchar *
gimp_unit_get_identifier (GimpUnit unit)
{
GParam *return_vals;
gint nreturn_vals;
gchar *identifier;
g_return_val_if_fail (unit >= GIMP_UNIT_PIXEL, g_strdup (""));
if (unit < GIMP_UNIT_END)
return g_strdup (gimp_unit_defs[unit].identifier);
if (unit == GIMP_UNIT_PERCENT)
return g_strdup (gimp_unit_percent.identifier);
return_vals = gimp_run_procedure ("gimp_unit_get_identifier",
&nreturn_vals,
PARAM_INT32, unit,
PARAM_END);
identifier = NULL;
if (return_vals[0].data.d_status == STATUS_SUCCESS)
identifier = g_strdup (return_vals[1].data.d_string);
gimp_destroy_params (return_vals, nreturn_vals);
return identifier ? identifier : g_strdup ("");
}
/**
* gimp_unit_get_symbol:
* @unit: The unit you want to know the symbol of.
*
* This is e.g. "''" for UNIT_INCH.
*
* NOTE: This string has to be g_free()'d by plugins but is a pointer to a
* constant string when this function is used from inside the GIMP.
*
* Returns: The unit's symbol.
*
*/
gchar *
gimp_unit_get_symbol (GimpUnit unit)
{
GParam *return_vals;
gint nreturn_vals;
gchar *symbol;
g_return_val_if_fail (unit >= GIMP_UNIT_PIXEL, g_strdup (""));
if (unit < GIMP_UNIT_END)
return g_strdup (gimp_unit_defs[unit].symbol);
if (unit == GIMP_UNIT_PERCENT)
return g_strdup (gimp_unit_percent.symbol);
return_vals = gimp_run_procedure ("gimp_unit_get_symbol",
&nreturn_vals,
PARAM_INT32, unit,
PARAM_END);
symbol = NULL;
if (return_vals[0].data.d_status == STATUS_SUCCESS)
symbol = g_strdup (return_vals[1].data.d_string);
gimp_destroy_params (return_vals, nreturn_vals);
return symbol ? symbol : g_strdup ("");
}
/**
* gimp_unit_get_abbreviation:
* @unit: The unit you want to know the abbreviation of.
*
* For built-in units, this function returns the translated abbreviation
* of the unit.
*
* NOTE: This string has to be g_free()'d by plugins but is a pointer to a
* constant string when this function is used from inside the GIMP.
*
* Returns: The unit's abbreviation.
*
*/
gchar *
gimp_unit_get_abbreviation (GimpUnit unit)
{
GParam *return_vals;
gint nreturn_vals;
gchar *abbreviation;
g_return_val_if_fail (unit >= GIMP_UNIT_PIXEL, g_strdup (""));
if (unit < GIMP_UNIT_END)
return g_strdup (gimp_unit_defs[unit].abbreviation);
if (unit == GIMP_UNIT_PERCENT)
return g_strdup (gimp_unit_percent.abbreviation);
return_vals = gimp_run_procedure ("gimp_unit_get_abbreviation",
&nreturn_vals,
PARAM_INT32, unit,
PARAM_END);
abbreviation = NULL;
if (return_vals[0].data.d_status == STATUS_SUCCESS)
abbreviation = g_strdup (return_vals[1].data.d_string);
gimp_destroy_params (return_vals, nreturn_vals);
return abbreviation ? abbreviation : g_strdup ("");
}
/**
* gimp_unit_get_singular:
* @unit: The unit you want to know the singular form of.
*
* For built-in units, this function returns the translated singular form
* of the unit's name.
*
* NOTE: This string has to be g_free()'d by plugins but is a pointer to a
* constant string when this function is used from inside the GIMP.
*
* Returns: The unit's singular form.
*
*/
gchar *
gimp_unit_get_singular (GimpUnit unit)
{
GParam *return_vals;
gint nreturn_vals;
gchar *singular;
g_return_val_if_fail (unit >= GIMP_UNIT_PIXEL, g_strdup (""));
if (unit < GIMP_UNIT_END)
return g_strdup (gettext (gimp_unit_defs[unit].singular));
if (unit == GIMP_UNIT_PERCENT)
return g_strdup (gettext (gimp_unit_percent.singular));
return_vals = gimp_run_procedure ("gimp_unit_get_singular",
&nreturn_vals,
PARAM_INT32, unit,
PARAM_END);
singular = NULL;
if (return_vals[0].data.d_status == STATUS_SUCCESS)
singular = g_strdup (return_vals[1].data.d_string);
gimp_destroy_params (return_vals, nreturn_vals);
return singular ? singular : g_strdup ("");
}
/**
* gimp_unit_get_plural:
* @unit: The unit you want to know the plural form of.
*
* For built-in units, this function returns the translated plural form
* of the unit's name.
*
* NOTE: This string has to be g_free()'d by plugins but is a pointer to a
* constant string when this function is used from inside the GIMP.
*
* Returns: The unit's plural form.
*
*/
gchar *
gimp_unit_get_plural (GimpUnit unit)
{
GParam *return_vals;
gint nreturn_vals;
gchar *plural;
g_return_val_if_fail (unit >= GIMP_UNIT_PIXEL, g_strdup (""));
if (unit < GIMP_UNIT_END)
return g_strdup (gettext (gimp_unit_defs[unit].plural));
if (unit == GIMP_UNIT_PERCENT)
return g_strdup (gettext (gimp_unit_percent.plural));
return_vals = gimp_run_procedure ("gimp_unit_get_plural",
&nreturn_vals,
PARAM_INT32, unit,
PARAM_END);
plural = NULL;
if (return_vals[0].data.d_status == STATUS_SUCCESS)
plural = g_strdup (return_vals[1].data.d_string);
gimp_destroy_params (return_vals, nreturn_vals);
return plural ? plural : g_strdup ("");
}
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