279 lines
8.7 KiB
C
279 lines
8.7 KiB
C
/* 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
|
|
*
|
|
* pikaoperationcolorize.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 <gdk-pixbuf/gdk-pixbuf.h>
|
|
#include <gegl.h>
|
|
|
|
#include "libpikacolor/pikacolor.h"
|
|
#include "libpikaconfig/pikaconfig.h"
|
|
|
|
#include "operations-types.h"
|
|
|
|
#include "pikaoperationcolorize.h"
|
|
|
|
#include "pika-intl.h"
|
|
|
|
|
|
enum
|
|
{
|
|
PROP_0,
|
|
PROP_HUE,
|
|
PROP_SATURATION,
|
|
PROP_LIGHTNESS,
|
|
PROP_COLOR
|
|
};
|
|
|
|
|
|
static void pika_operation_colorize_get_property (GObject *object,
|
|
guint property_id,
|
|
GValue *value,
|
|
GParamSpec *pspec);
|
|
static void pika_operation_colorize_set_property (GObject *object,
|
|
guint property_id,
|
|
const GValue *value,
|
|
GParamSpec *pspec);
|
|
|
|
static gboolean pika_operation_colorize_process (GeglOperation *operation,
|
|
void *in_buf,
|
|
void *out_buf,
|
|
glong samples,
|
|
const GeglRectangle *roi,
|
|
gint level);
|
|
|
|
|
|
G_DEFINE_TYPE (PikaOperationColorize, pika_operation_colorize,
|
|
PIKA_TYPE_OPERATION_POINT_FILTER)
|
|
|
|
#define parent_class pika_operation_colorize_parent_class
|
|
|
|
|
|
static void
|
|
pika_operation_colorize_class_init (PikaOperationColorizeClass *klass)
|
|
{
|
|
GObjectClass *object_class = G_OBJECT_CLASS (klass);
|
|
GeglOperationClass *operation_class = GEGL_OPERATION_CLASS (klass);
|
|
GeglOperationPointFilterClass *point_class = GEGL_OPERATION_POINT_FILTER_CLASS (klass);
|
|
PikaHSL hsl;
|
|
PikaRGB rgb;
|
|
|
|
object_class->set_property = pika_operation_colorize_set_property;
|
|
object_class->get_property = pika_operation_colorize_get_property;
|
|
|
|
gegl_operation_class_set_keys (operation_class,
|
|
"name", "pika:colorize",
|
|
"categories", "color",
|
|
"description", _("Colorize the image"),
|
|
NULL);
|
|
|
|
point_class->process = pika_operation_colorize_process;
|
|
|
|
PIKA_CONFIG_PROP_DOUBLE (object_class, PROP_HUE,
|
|
"hue",
|
|
_("Hue"),
|
|
_("Hue"),
|
|
0.0, 1.0, 0.5, 0);
|
|
|
|
PIKA_CONFIG_PROP_DOUBLE (object_class, PROP_SATURATION,
|
|
"saturation",
|
|
_("Saturation"),
|
|
_("Saturation"),
|
|
0.0, 1.0, 0.5, 0);
|
|
|
|
PIKA_CONFIG_PROP_DOUBLE (object_class, PROP_LIGHTNESS,
|
|
"lightness",
|
|
_("Lightness"),
|
|
_("Lightness"),
|
|
-1.0, 1.0, 0.0, 0);
|
|
|
|
pika_hsl_set (&hsl, 0.5, 0.5, 0.5);
|
|
pika_hsl_set_alpha (&hsl, 1.0);
|
|
pika_hsl_to_rgb (&hsl, &rgb);
|
|
|
|
g_object_class_install_property (object_class, PROP_COLOR,
|
|
pika_param_spec_rgb ("color",
|
|
_("Color"),
|
|
_("Color"),
|
|
FALSE, &rgb,
|
|
G_PARAM_READWRITE));
|
|
}
|
|
|
|
static void
|
|
pika_operation_colorize_init (PikaOperationColorize *self)
|
|
{
|
|
}
|
|
|
|
static void
|
|
pika_operation_colorize_get_property (GObject *object,
|
|
guint property_id,
|
|
GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
PikaOperationColorize *self = PIKA_OPERATION_COLORIZE (object);
|
|
|
|
switch (property_id)
|
|
{
|
|
case PROP_HUE:
|
|
g_value_set_double (value, self->hue);
|
|
break;
|
|
|
|
case PROP_SATURATION:
|
|
g_value_set_double (value, self->saturation);
|
|
break;
|
|
|
|
case PROP_LIGHTNESS:
|
|
g_value_set_double (value, self->lightness);
|
|
break;
|
|
|
|
case PROP_COLOR:
|
|
{
|
|
PikaHSL hsl;
|
|
PikaRGB rgb;
|
|
|
|
pika_hsl_set (&hsl,
|
|
self->hue,
|
|
self->saturation,
|
|
(self->lightness + 1.0) / 2.0);
|
|
pika_hsl_set_alpha (&hsl, 1.0);
|
|
pika_hsl_to_rgb (&hsl, &rgb);
|
|
pika_value_set_rgb (value, &rgb);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
pika_operation_colorize_set_property (GObject *object,
|
|
guint property_id,
|
|
const GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
PikaOperationColorize *self = PIKA_OPERATION_COLORIZE (object);
|
|
|
|
switch (property_id)
|
|
{
|
|
case PROP_HUE:
|
|
self->hue = g_value_get_double (value);
|
|
g_object_notify (object, "color");
|
|
break;
|
|
|
|
case PROP_SATURATION:
|
|
self->saturation = g_value_get_double (value);
|
|
g_object_notify (object, "color");
|
|
break;
|
|
|
|
case PROP_LIGHTNESS:
|
|
self->lightness = g_value_get_double (value);
|
|
g_object_notify (object, "color");
|
|
break;
|
|
|
|
case PROP_COLOR:
|
|
{
|
|
PikaRGB rgb;
|
|
PikaHSL hsl;
|
|
|
|
pika_value_get_rgb (value, &rgb);
|
|
pika_rgb_to_hsl (&rgb, &hsl);
|
|
|
|
if (hsl.h == -1)
|
|
hsl.h = self->hue;
|
|
|
|
if (hsl.l == 0.0 || hsl.l == 1.0)
|
|
hsl.s = self->saturation;
|
|
|
|
g_object_set (self,
|
|
"hue", hsl.h,
|
|
"saturation", hsl.s,
|
|
"lightness", hsl.l * 2.0 - 1.0,
|
|
NULL);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
pika_operation_colorize_process (GeglOperation *operation,
|
|
void *in_buf,
|
|
void *out_buf,
|
|
glong samples,
|
|
const GeglRectangle *roi,
|
|
gint level)
|
|
{
|
|
PikaOperationColorize *colorize = PIKA_OPERATION_COLORIZE (operation);
|
|
gfloat *src = in_buf;
|
|
gfloat *dest = out_buf;
|
|
PikaHSL hsl;
|
|
|
|
hsl.h = colorize->hue;
|
|
hsl.s = colorize->saturation;
|
|
|
|
while (samples--)
|
|
{
|
|
PikaRGB rgb;
|
|
gfloat lum = PIKA_RGB_LUMINANCE (src[RED],
|
|
src[GREEN],
|
|
src[BLUE]);
|
|
|
|
if (colorize->lightness > 0)
|
|
{
|
|
lum = lum * (1.0 - colorize->lightness);
|
|
|
|
lum += 1.0 - (1.0 - colorize->lightness);
|
|
}
|
|
else if (colorize->lightness < 0)
|
|
{
|
|
lum = lum * (colorize->lightness + 1.0);
|
|
}
|
|
|
|
hsl.l = lum;
|
|
|
|
pika_hsl_to_rgb (&hsl, &rgb);
|
|
|
|
/* the code in base/colorize.c would multiply r,b,g with lum,
|
|
* but this is a bug since it should multiply with 255. We
|
|
* don't repeat this bug here (this is the reason why the gegl
|
|
* colorize is brighter than the legacy one).
|
|
*/
|
|
dest[RED] = rgb.r; /* * lum */
|
|
dest[GREEN] = rgb.g; /* * lum */
|
|
dest[BLUE] = rgb.b; /* * lum */
|
|
dest[ALPHA] = src[ALPHA];
|
|
|
|
src += 4;
|
|
dest += 4;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
