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PIKApp/app/operations/pikacurvesconfig.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 Spencer Kimball and Peter Mattis
*
* pikacurvesconfig.c
* Copyright (C) 2007 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/>.
*/
#include "config.h"
#include <cairo.h>
#include <gegl.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include "libpikabase/pikabase.h"
#include "libpikacolor/pikacolor.h"
#include "libpikamath/pikamath.h"
#include "libpikaconfig/pikaconfig.h"
#include "operations-types.h"
#include "core/pika-utils.h"
#include "core/pikacurve.h"
#include "core/pikahistogram.h"
#include "pikacurvesconfig.h"
#include "pika-intl.h"
enum
{
PROP_0,
PROP_TRC,
PROP_LINEAR,
PROP_CHANNEL,
PROP_CURVE
};
static void pika_curves_config_iface_init (PikaConfigInterface *iface);
static void pika_curves_config_finalize (GObject *object);
static void pika_curves_config_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static void pika_curves_config_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static gboolean pika_curves_config_serialize (PikaConfig *config,
PikaConfigWriter *writer,
gpointer data);
static gboolean pika_curves_config_deserialize (PikaConfig *config,
GScanner *scanner,
gint nest_level,
gpointer data);
static gboolean pika_curves_config_equal (PikaConfig *a,
PikaConfig *b);
static void pika_curves_config_reset (PikaConfig *config);
static gboolean pika_curves_config_copy (PikaConfig *src,
PikaConfig *dest,
GParamFlags flags);
static void pika_curves_config_curve_dirty (PikaCurve *curve,
PikaCurvesConfig *config);
G_DEFINE_TYPE_WITH_CODE (PikaCurvesConfig, pika_curves_config,
PIKA_TYPE_OPERATION_SETTINGS,
G_IMPLEMENT_INTERFACE (PIKA_TYPE_CONFIG,
pika_curves_config_iface_init))
#define parent_class pika_curves_config_parent_class
static void
pika_curves_config_class_init (PikaCurvesConfigClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
PikaViewableClass *viewable_class = PIKA_VIEWABLE_CLASS (klass);
object_class->finalize = pika_curves_config_finalize;
object_class->set_property = pika_curves_config_set_property;
object_class->get_property = pika_curves_config_get_property;
viewable_class->default_icon_name = "pika-tool-curves";
PIKA_CONFIG_PROP_ENUM (object_class, PROP_TRC,
"trc",
_("Linear/Perceptual"),
_("Work on linear or perceptual RGB"),
PIKA_TYPE_TRC_TYPE,
PIKA_TRC_NON_LINEAR, 0);
/* compat */
PIKA_CONFIG_PROP_BOOLEAN (object_class, PROP_LINEAR,
"linear",
_("Linear"),
_("Work on linear RGB"),
FALSE, 0);
PIKA_CONFIG_PROP_ENUM (object_class, PROP_CHANNEL,
"channel",
_("Channel"),
_("The affected channel"),
PIKA_TYPE_HISTOGRAM_CHANNEL,
PIKA_HISTOGRAM_VALUE, 0);
PIKA_CONFIG_PROP_OBJECT (object_class, PROP_CURVE,
"curve",
_("Curve"),
_("Curve"),
PIKA_TYPE_CURVE,
PIKA_CONFIG_PARAM_AGGREGATE);
}
static void
pika_curves_config_iface_init (PikaConfigInterface *iface)
{
iface->serialize = pika_curves_config_serialize;
iface->deserialize = pika_curves_config_deserialize;
iface->equal = pika_curves_config_equal;
iface->reset = pika_curves_config_reset;
iface->copy = pika_curves_config_copy;
}
static void
pika_curves_config_init (PikaCurvesConfig *self)
{
PikaHistogramChannel channel;
for (channel = PIKA_HISTOGRAM_VALUE;
channel <= PIKA_HISTOGRAM_ALPHA;
channel++)
{
self->curve[channel] = PIKA_CURVE (pika_curve_new ("curves config"));
g_signal_connect_object (self->curve[channel], "dirty",
G_CALLBACK (pika_curves_config_curve_dirty),
self, 0);
}
pika_config_reset (PIKA_CONFIG (self));
}
static void
pika_curves_config_finalize (GObject *object)
{
PikaCurvesConfig *self = PIKA_CURVES_CONFIG (object);
PikaHistogramChannel channel;
for (channel = PIKA_HISTOGRAM_VALUE;
channel <= PIKA_HISTOGRAM_ALPHA;
channel++)
{
g_object_unref (self->curve[channel]);
self->curve[channel] = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
pika_curves_config_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
PikaCurvesConfig *self = PIKA_CURVES_CONFIG (object);
switch (property_id)
{
case PROP_TRC:
g_value_set_enum (value, self->trc);
break;
case PROP_LINEAR:
g_value_set_boolean (value, self->trc == PIKA_TRC_LINEAR ? TRUE : FALSE);
break;
case PROP_CHANNEL:
g_value_set_enum (value, self->channel);
break;
case PROP_CURVE:
g_value_set_object (value, self->curve[self->channel]);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
pika_curves_config_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
PikaCurvesConfig *self = PIKA_CURVES_CONFIG (object);
switch (property_id)
{
case PROP_TRC:
self->trc = g_value_get_enum (value);
break;
case PROP_LINEAR:
self->trc = g_value_get_boolean (value) ?
PIKA_TRC_LINEAR : PIKA_TRC_NON_LINEAR;
g_object_notify (object, "trc");
break;
case PROP_CHANNEL:
self->channel = g_value_get_enum (value);
g_object_notify (object, "curve");
break;
case PROP_CURVE:
{
PikaCurve *src_curve = g_value_get_object (value);
PikaCurve *dest_curve = self->curve[self->channel];
if (src_curve && dest_curve)
{
pika_config_copy (PIKA_CONFIG (src_curve),
PIKA_CONFIG (dest_curve), 0);
}
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static gboolean
pika_curves_config_serialize (PikaConfig *config,
PikaConfigWriter *writer,
gpointer data)
{
PikaCurvesConfig *c_config = PIKA_CURVES_CONFIG (config);
PikaHistogramChannel channel;
PikaHistogramChannel old_channel;
gboolean success = TRUE;
if (! pika_operation_settings_config_serialize_base (config, writer, data) ||
! pika_config_serialize_property_by_name (config, "trc", writer))
return FALSE;
old_channel = c_config->channel;
for (channel = PIKA_HISTOGRAM_VALUE;
channel <= PIKA_HISTOGRAM_ALPHA;
channel++)
{
c_config->channel = channel;
/* serialize the channel properties manually (not using
* pika_config_serialize_properties()), so the parent class'
* properties don't end up in the config file one per channel.
* See bug #700653.
*/
success =
(pika_config_serialize_property_by_name (config, "channel", writer) &&
pika_config_serialize_property_by_name (config, "curve", writer));
if (! success)
break;
}
c_config->channel = old_channel;
return success;
}
static gboolean
pika_curves_config_deserialize (PikaConfig *config,
GScanner *scanner,
gint nest_level,
gpointer data)
{
PikaCurvesConfig *c_config = PIKA_CURVES_CONFIG (config);
PikaHistogramChannel old_channel;
gboolean success = TRUE;
old_channel = c_config->channel;
success = pika_config_deserialize_properties (config, scanner, nest_level);
g_object_set (config, "channel", old_channel, NULL);
return success;
}
static gboolean
pika_curves_config_equal (PikaConfig *a,
PikaConfig *b)
{
PikaCurvesConfig *config_a = PIKA_CURVES_CONFIG (a);
PikaCurvesConfig *config_b = PIKA_CURVES_CONFIG (b);
PikaHistogramChannel channel;
if (! pika_operation_settings_config_equal_base (a, b) ||
config_a->trc != config_b->trc)
return FALSE;
for (channel = PIKA_HISTOGRAM_VALUE;
channel <= PIKA_HISTOGRAM_ALPHA;
channel++)
{
PikaCurve *curve_a = config_a->curve[channel];
PikaCurve *curve_b = config_b->curve[channel];
if (curve_a && curve_b)
{
if (! pika_config_is_equal_to (PIKA_CONFIG (curve_a),
PIKA_CONFIG (curve_b)))
return FALSE;
}
else if (curve_a || curve_b)
{
return FALSE;
}
}
/* don't compare "channel" */
return TRUE;
}
static void
pika_curves_config_reset (PikaConfig *config)
{
PikaCurvesConfig *c_config = PIKA_CURVES_CONFIG (config);
PikaHistogramChannel channel;
pika_operation_settings_config_reset_base (config);
for (channel = PIKA_HISTOGRAM_VALUE;
channel <= PIKA_HISTOGRAM_ALPHA;
channel++)
{
c_config->channel = channel;
pika_curves_config_reset_channel (c_config);
}
pika_config_reset_property (G_OBJECT (config), "trc");
pika_config_reset_property (G_OBJECT (config), "channel");
}
static gboolean
pika_curves_config_copy (PikaConfig *src,
PikaConfig *dest,
GParamFlags flags)
{
PikaCurvesConfig *src_config = PIKA_CURVES_CONFIG (src);
PikaCurvesConfig *dest_config = PIKA_CURVES_CONFIG (dest);
PikaHistogramChannel channel;
if (! pika_operation_settings_config_copy_base (src, dest, flags))
return FALSE;
for (channel = PIKA_HISTOGRAM_VALUE;
channel <= PIKA_HISTOGRAM_ALPHA;
channel++)
{
pika_config_copy (PIKA_CONFIG (src_config->curve[channel]),
PIKA_CONFIG (dest_config->curve[channel]),
flags);
}
dest_config->trc = src_config->trc;
dest_config->channel = src_config->channel;
g_object_notify (G_OBJECT (dest), "trc");
g_object_notify (G_OBJECT (dest), "channel");
return TRUE;
}
static void
pika_curves_config_curve_dirty (PikaCurve *curve,
PikaCurvesConfig *config)
{
g_object_notify (G_OBJECT (config), "curve");
}
/* public functions */
GObject *
pika_curves_config_new_spline (gint32 channel,
const gdouble *points,
gint n_points)
{
PikaCurvesConfig *config;
PikaCurve *curve;
gint i;
g_return_val_if_fail (channel >= PIKA_HISTOGRAM_VALUE &&
channel <= PIKA_HISTOGRAM_ALPHA, NULL);
g_return_val_if_fail (points != NULL, NULL);
g_return_val_if_fail (n_points >= 2 && n_points <= 1024, NULL);
config = g_object_new (PIKA_TYPE_CURVES_CONFIG, NULL);
curve = config->curve[channel];
pika_data_freeze (PIKA_DATA (curve));
pika_curve_set_curve_type (curve, PIKA_CURVE_SMOOTH);
pika_curve_clear_points (curve);
for (i = 0; i < n_points; i++)
pika_curve_add_point (curve,
(gdouble) points[i * 2],
(gdouble) points[i * 2 + 1]);
pika_data_thaw (PIKA_DATA (curve));
return G_OBJECT (config);
}
GObject *
pika_curves_config_new_explicit (gint32 channel,
const gdouble *samples,
gint n_samples)
{
PikaCurvesConfig *config;
PikaCurve *curve;
gint i;
g_return_val_if_fail (channel >= PIKA_HISTOGRAM_VALUE &&
channel <= PIKA_HISTOGRAM_ALPHA, NULL);
g_return_val_if_fail (samples != NULL, NULL);
g_return_val_if_fail (n_samples >= 2 && n_samples <= 4096, NULL);
config = g_object_new (PIKA_TYPE_CURVES_CONFIG, NULL);
curve = config->curve[channel];
pika_data_freeze (PIKA_DATA (curve));
pika_curve_set_curve_type (curve, PIKA_CURVE_FREE);
pika_curve_set_n_samples (curve, n_samples);
for (i = 0; i < n_samples; i++)
pika_curve_set_curve (curve,
(gdouble) i / (gdouble) (n_samples - 1),
(gdouble) samples[i]);
pika_data_thaw (PIKA_DATA (curve));
return G_OBJECT (config);
}
GObject *
pika_curves_config_new_spline_cruft (gint32 channel,
const guint8 *points,
gint n_points)
{
GObject *config;
gdouble *d_points;
gint i;
g_return_val_if_fail (channel >= PIKA_HISTOGRAM_VALUE &&
channel <= PIKA_HISTOGRAM_ALPHA, NULL);
g_return_val_if_fail (points != NULL, NULL);
g_return_val_if_fail (n_points >= 2 && n_points <= 1024, NULL);
d_points = g_new (gdouble, 2 * n_points);
for (i = 0; i < n_points; i++)
{
d_points[i * 2] = (gdouble) points[i * 2] / 255.0;
d_points[i * 2 + 1] = (gdouble) points[i * 2 + 1] / 255.0;
}
config = pika_curves_config_new_spline (channel, d_points, n_points);
g_free (d_points);
return config;
}
GObject *
pika_curves_config_new_explicit_cruft (gint32 channel,
const guint8 *samples,
gint n_samples)
{
GObject *config;
gdouble *d_samples;
gint i;
g_return_val_if_fail (channel >= PIKA_HISTOGRAM_VALUE &&
channel <= PIKA_HISTOGRAM_ALPHA, NULL);
g_return_val_if_fail (samples != NULL, NULL);
g_return_val_if_fail (n_samples >= 2 && n_samples <= 4096, NULL);
d_samples = g_new (gdouble, n_samples);
for (i = 0; i < n_samples; i++)
{
d_samples[i] = (gdouble) samples[i] / 255.0;
}
config = pika_curves_config_new_explicit (channel, d_samples, n_samples);
g_free (d_samples);
return config;
}
void
pika_curves_config_reset_channel (PikaCurvesConfig *config)
{
g_return_if_fail (PIKA_IS_CURVES_CONFIG (config));
pika_config_reset (PIKA_CONFIG (config->curve[config->channel]));
}
#define PIKA_CURVE_N_CRUFT_POINTS 17
gboolean
pika_curves_config_load_cruft (PikaCurvesConfig *config,
GInputStream *input,
GError **error)
{
GDataInputStream *data_input;
gint index[5][PIKA_CURVE_N_CRUFT_POINTS];
gint value[5][PIKA_CURVE_N_CRUFT_POINTS];
gchar *line;
gsize line_len;
gint i, j;
g_return_val_if_fail (PIKA_IS_CURVES_CONFIG (config), FALSE);
g_return_val_if_fail (G_IS_INPUT_STREAM (input), FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
data_input = g_data_input_stream_new (input);
line_len = 64;
line = pika_data_input_stream_read_line_always (data_input, &line_len,
NULL, error);
if (! line)
return FALSE;
if (strcmp (line, "# PIKA Curves File") != 0)
{
g_set_error_literal (error, PIKA_CONFIG_ERROR, PIKA_CONFIG_ERROR_PARSE,
_("not a PIKA Curves file"));
g_object_unref (data_input);
g_free (line);
return FALSE;
}
for (i = 0; i < 5; i++)
{
for (j = 0; j < PIKA_CURVE_N_CRUFT_POINTS; j++)
{
gchar *x_str = NULL;
gchar *y_str = NULL;
if (! (x_str = g_data_input_stream_read_upto (data_input, " ", -1,
NULL, NULL, error)) ||
! g_data_input_stream_read_byte (data_input, NULL, error) ||
! (y_str = g_data_input_stream_read_upto (data_input, " ", -1,
NULL, NULL, error)) ||
! g_data_input_stream_read_byte (data_input, NULL, error))
{
g_free (x_str);
g_free (y_str);
g_object_unref (data_input);
return FALSE;
}
if (sscanf (x_str, "%d", &index[i][j]) != 1 ||
sscanf (y_str, "%d", &value[i][j]) != 1)
{
g_set_error_literal (error,
PIKA_CONFIG_ERROR, PIKA_CONFIG_ERROR_PARSE,
_("Parse error, didn't find 2 integers"));
g_free (x_str);
g_free (y_str);
g_object_unref (data_input);
return FALSE;
}
g_free (x_str);
g_free (y_str);
}
}
g_object_unref (data_input);
g_object_freeze_notify (G_OBJECT (config));
for (i = 0; i < 5; i++)
{
PikaCurve *curve = config->curve[i];
pika_data_freeze (PIKA_DATA (curve));
pika_curve_set_curve_type (curve, PIKA_CURVE_SMOOTH);
pika_curve_clear_points (curve);
for (j = 0; j < PIKA_CURVE_N_CRUFT_POINTS; j++)
{
gdouble x;
gdouble y;
x = (gdouble) index[i][j] / 255.0;
y = (gdouble) value[i][j] / 255.0;
if (x >= 0.0)
pika_curve_add_point (curve, x, y);
}
pika_data_thaw (PIKA_DATA (curve));
}
config->trc = PIKA_TRC_NON_LINEAR;
g_object_notify (G_OBJECT (config), "trc");
g_object_thaw_notify (G_OBJECT (config));
return TRUE;
}
gboolean
pika_curves_config_save_cruft (PikaCurvesConfig *config,
GOutputStream *output,
GError **error)
{
GString *string;
gint i;
g_return_val_if_fail (PIKA_IS_CURVES_CONFIG (config), FALSE);
g_return_val_if_fail (G_IS_OUTPUT_STREAM (output), FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
string = g_string_new ("# PIKA Curves File\n");
for (i = 0; i < 5; i++)
{
PikaCurve *curve = config->curve[i];
gint j;
if (curve->curve_type == PIKA_CURVE_SMOOTH)
{
g_object_ref (curve);
}
else
{
curve = PIKA_CURVE (pika_data_duplicate (PIKA_DATA (curve)));
pika_curve_set_curve_type (curve, PIKA_CURVE_SMOOTH);
}
for (j = 0; j < PIKA_CURVE_N_CRUFT_POINTS; j++)
{
gint x = -1;
gint y = -1;
if (j < pika_curve_get_n_points (curve))
{
gdouble point_x;
gdouble point_y;
pika_curve_get_point (curve, j, &point_x, &point_y);
x = floor (point_x * 255.999);
y = floor (point_y * 255.999);
}
g_string_append_printf (string, "%d %d ", x, y);
}
g_string_append_printf (string, "\n");
g_object_unref (curve);
}
if (! g_output_stream_write_all (output, string->str, string->len,
NULL, NULL, error))
{
g_prefix_error (error, _("Writing curves file failed: "));
g_string_free (string, TRUE);
return FALSE;
}
g_string_free (string, TRUE);
return TRUE;
}
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