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PIKApp/plug-ins/common/compose.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
*
* Compose plug-in (C) 1997,1999 Peter Kirchgessner
* e-mail: peter@kirchgessner.net, WWW: http://www.kirchgessner.net
*
* 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 plug-in composes RGB-images from several types of channels
*/
/* Lab colorspace support originally written by Alexey Dyachenko,
* merged into the official plug-in by Sven Neumann.
*
* Support for channels empty or filled with a single mask value
* added by Sylvain FORET.
*/
/*
* All redundant _256 versions of YCbCr* are here only for compatibility .
* They can be dropped for PIKA 3.0
*/
#include "config.h"
#include <string.h>
#include <libpika/pika.h>
#include <libpika/pikaui.h>
#include "libpika/stdplugins-intl.h"
#define COMPOSE_PROC "plug-in-compose"
#define DRAWABLE_COMPOSE_PROC "plug-in-drawable-compose"
#define RECOMPOSE_PROC "plug-in-recompose"
#define PLUG_IN_BINARY "compose"
#define PLUG_IN_ROLE "pika-compose"
/* Maximum number of images to compose */
#define MAX_COMPOSE_IMAGES 4
typedef struct
{
gboolean is_object;
union
{
gpointer object; /* Input images or drawable */
guchar val; /* Mask value to compose with */
} comp;
} ComposeInput;
/* Description of a component */
typedef struct
{
const gchar *babl_name;
const gchar *name;
const gchar *icon;
const float range_min; /* val min of the component */
const float range_max; /* val max of the component */
const gboolean is_perceptual; /* Take the componenent from an Y' or Y buffer */
} COMPONENT_DSC;
/* Description of a composition */
typedef struct
{
const gchar *babl_model;
const gchar *compose_type; /* Type of composition ("RGB", "RGBA",...) */
gint num_images; /* Number of input images needed */
/* Channel information */
const COMPONENT_DSC components[MAX_COMPOSE_IMAGES];
const gchar *filename; /* Name of new image */
} COMPOSE_DSC;
typedef struct
{
ComposeInput inputs[MAX_COMPOSE_IMAGES]; /* Image or mask value of input */
gchar compose_type[32]; /* type of composition */
gboolean do_recompose;
PikaLayer *source_layer; /* for recomposing */
} ComposeVals;
/* Dialog structure */
typedef struct
{
gint width, height; /* Size of selected image */
GtkWidget *channel_label[MAX_COMPOSE_IMAGES]; /* The labels to change */
GtkWidget *channel_icon[MAX_COMPOSE_IMAGES]; /* The icons */
GtkWidget *channel_menu[MAX_COMPOSE_IMAGES]; /* The menus */
GtkWidget *scales[MAX_COMPOSE_IMAGES]; /* The values color scales */
ComposeInput selected[MAX_COMPOSE_IMAGES]; /* Image Ids or mask values from menus */
gint compose_idx; /* Compose type */
} ComposeInterface;
typedef struct _Compose Compose;
typedef struct _ComposeClass ComposeClass;
struct _Compose
{
PikaPlugIn parent_instance;
};
struct _ComposeClass
{
PikaPlugInClass parent_class;
};
#define COMPOSE_TYPE (compose_get_type ())
#define COMPOSE (obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), COMPOSE_TYPE, Compose))
GType compose_get_type (void) G_GNUC_CONST;
static GList * compose_query_procedures (PikaPlugIn *plug_in);
static PikaProcedure * compose_create_procedure (PikaPlugIn *plug_in,
const gchar *name);
static PikaValueArray * compose_run (PikaProcedure *procedure,
PikaRunMode run_mode,
PikaImage *image,
gint n_drawables,
PikaDrawable **drawables,
const PikaValueArray *args,
gpointer run_data);
static void cpn_affine_transform (GeglBuffer *buffer,
gdouble min,
gdouble max);
static void fill_buffer_from_components (GeglBuffer *temp[MAX_COMPOSE_IMAGES],
GeglBuffer *dst,
gint num_cpn,
ComposeInput *inputs,
gdouble mask_vals[MAX_COMPOSE_IMAGES]);
static void perform_composition (COMPOSE_DSC curr_compose_dsc,
GeglBuffer *buffer_src[MAX_COMPOSE_IMAGES],
GeglBuffer *buffer_dst,
ComposeInput *inputs,
gint num_images);
static PikaImage * compose (const gchar *compose_type,
ComposeInput *inputs,
gboolean compose_by_drawable);
static PikaImage * create_new_image (GFile *file,
guint width,
guint height,
PikaImageType gdtype,
PikaPrecision precision,
PikaLayer **layer,
GeglBuffer **buffer);
static gboolean compose_dialog (const gchar *compose_type,
PikaDrawable *drawable);
static gboolean check_gray (PikaImage *image,
PikaItem *drawable,
gpointer data);
static void combo_callback (PikaIntComboBox *cbox,
gpointer data);
static void scale_callback (PikaLabelSpin *scale,
ComposeInput *input);
static void check_response (GtkWidget *dialog,
gint response,
gpointer data);
static void type_combo_callback (PikaIntComboBox *combo,
gpointer data);
G_DEFINE_TYPE (Compose, compose, PIKA_TYPE_PLUG_IN)
PIKA_MAIN (COMPOSE_TYPE)
DEFINE_STD_SET_I18N
/* Decompositions availables.
* All the following values have to be kept in sync with those of decompose.c
*/
#define CPN_RGBA_R { "R", N_("_Red:"), PIKA_ICON_CHANNEL_RED, 0.0, 1.0, FALSE}
#define CPN_RGBA_G { "G", N_("_Green:"), PIKA_ICON_CHANNEL_GREEN, 0.0, 1.0, FALSE}
#define CPN_RGBA_B { "B", N_("_Blue:"), PIKA_ICON_CHANNEL_BLUE, 0.0, 1.0, FALSE}
#define CPN_RGBA_A { "A", N_("_Alpha:"), PIKA_ICON_CHANNEL_ALPHA, 0.0, 1.0, TRUE}
#define CPN_HSV_H { "hue", N_("_Hue:"), NULL, 0.0, 1.0, TRUE}
#define CPN_HSV_S { "saturation", N_("_Saturation:"), NULL, 0.0, 1.0, TRUE}
#define CPN_HSV_V { "value", N_("_Value:"), NULL, 0.0, 1.0, TRUE}
#define CPN_HSL_H { "hue", N_("_Hue:"), NULL, 0.0, 1.0, TRUE}
#define CPN_HSL_S { "saturation", N_("_Saturation:"), NULL, 0.0, 1.0, TRUE}
#define CPN_HSL_L { "lightness", N_("_Lightness:"), NULL, 0.0, 1.0, TRUE}
#define CPN_CMYK_C { "Cyan", N_("_Cyan:"), NULL, 0.0, 1.0, TRUE}
#define CPN_CMYK_M { "Magenta", N_("_Magenta:"), NULL, 0.0, 1.0, TRUE}
#define CPN_CMYK_Y { "Yellow", N_("_Yellow:"), NULL, 0.0, 1.0, TRUE}
#define CPN_CMYK_K { "Key", N_("_Black:"), NULL, 0.0, 1.0, TRUE}
#define CPN_LAB_L { "CIE L", N_("_L:"), NULL, 0.0, 100.0, TRUE}
#define CPN_LAB_A { "CIE a", N_("_A:"), NULL, -127.5, 127.5, TRUE}
#define CPN_LAB_B { "CIE b", N_("_B:"), NULL, -127.5, 127.5, TRUE}
#define CPN_LCH_L { "CIE L", N_("_L"), NULL, 0.0, 100.0, TRUE}
#define CPN_LCH_C { "CIE C(ab)", N_("_C"), NULL, 0.0, 200.0, TRUE}
#define CPN_LCH_H { "CIE H(ab)", N_("_H"), NULL, 0.0, 360.0, TRUE}
#define CPN_YCBCR_Y { "Y'", N_("_Luma y470:"), NULL, 0.0, 1.0, TRUE }
#define CPN_YCBCR_CB { "Cb", N_("_Blueness cb470:"), NULL, -0.5, 0.5, TRUE }
#define CPN_YCBCR_CR { "Cr", N_("_Redness cr470:"), NULL, -0.5, 0.5, TRUE }
#define CPN_YCBCR709_Y { "Y'", N_("_Luma y709:"), NULL, 0.0, 1.0, TRUE }
#define CPN_YCBCR709_CB { "Cb", N_("_Blueness cb709:"), NULL, -0.5, 0.5, TRUE }
#define CPN_YCBCR709_CR { "Cr", N_("_Redness cr709:"), NULL, -0.5, 0.5, TRUE }
static COMPOSE_DSC compose_dsc[] =
{
{ "RGB",
N_("RGB"), 3,
{ CPN_RGBA_R,
CPN_RGBA_G,
CPN_RGBA_B },
"rgb-compose" },
{ "RGBA",
N_("RGBA"), 4,
{ CPN_RGBA_R,
CPN_RGBA_G,
CPN_RGBA_B,
CPN_RGBA_A },
"rgba-compose" },
{ "HSV",
N_("HSV"), 3,
{ CPN_HSV_H,
CPN_HSV_S,
CPN_HSV_V },
"hsv-compose" },
{ "HSL",
N_("HSL"), 3,
{ CPN_HSL_H,
CPN_HSL_S,
CPN_HSL_L },
"hsl-compose" },
{ "CMYK",
N_("CMYK"), 4,
{ CPN_CMYK_C,
CPN_CMYK_M,
CPN_CMYK_Y,
CPN_CMYK_K },
"cmyk-compose" },
{ "CIE Lab",
N_("LAB"), 3,
{ CPN_LAB_L,
CPN_LAB_A,
CPN_LAB_B },
"lab-compose" },
{ "CIE LCH(ab)",
N_("LCH"), 3,
{ CPN_LCH_L,
CPN_LCH_C,
CPN_LCH_H },
"lch-compose" },
{ "Y'CbCr",
N_("YCbCr_ITU_R470"), 3,
{ CPN_YCBCR_Y,
CPN_YCBCR_CB,
CPN_YCBCR_CR },
"ycbcr470-compose" },
{ "Y'CbCr709",
N_("YCbCr_ITU_R709"), 3,
{ CPN_YCBCR709_Y,
CPN_YCBCR709_CB,
CPN_YCBCR709_CR },
"ycbcr709-compose" },
{ "Y'CbCr",
N_("YCbCr_ITU_R470_256"), 3,
{ CPN_YCBCR_Y,
CPN_YCBCR_CB,
CPN_YCBCR_CR },
"ycbcr470F-compose" },
{ "Y'CbCr709",
N_("YCbCr_ITU_R709_256"), 3,
{ CPN_YCBCR709_Y,
CPN_YCBCR709_CB,
CPN_YCBCR709_CR },
"ycbcr709F-compose" }
};
static ComposeVals composevals =
{
{{ 0, }}, /* Image IDs of images to compose or mask values */
"RGB", /* Type of composition */
FALSE, /* Do recompose */
NULL /* source layer */
};
static ComposeInterface composeint =
{
0, 0, /* width, height */
{ NULL }, /* Label Widgets */
{ NULL }, /* Icon Widgets */
{ NULL }, /* Menu Widgets */
{ NULL }, /* Color Scale Widgets */
{{ 0, }}, /* Image Ids or mask values from menus */
0 /* Compose type */
};
static void
compose_class_init (ComposeClass *klass)
{
PikaPlugInClass *plug_in_class = PIKA_PLUG_IN_CLASS (klass);
plug_in_class->query_procedures = compose_query_procedures;
plug_in_class->create_procedure = compose_create_procedure;
plug_in_class->set_i18n = STD_SET_I18N;
}
static void
compose_init (Compose *compose)
{
}
static GList *
compose_query_procedures (PikaPlugIn *plug_in)
{
GList *list = NULL;
list = g_list_append (list, g_strdup (COMPOSE_PROC));
list = g_list_append (list, g_strdup (DRAWABLE_COMPOSE_PROC));
list = g_list_append (list, g_strdup (RECOMPOSE_PROC));
return list;
}
static PikaProcedure *
compose_create_procedure (PikaPlugIn *plug_in,
const gchar *name)
{
PikaProcedure *procedure = NULL;
GString *type_desc;
gint i;
type_desc = g_string_new ("What to compose: ");
g_string_append_c (type_desc, '"');
g_string_append (type_desc, compose_dsc[0].compose_type);
g_string_append_c (type_desc, '"');
for (i = 1; i < G_N_ELEMENTS (compose_dsc); i++)
{
g_string_append (type_desc, ", ");
g_string_append_c (type_desc, '"');
g_string_append (type_desc, compose_dsc[i].compose_type);
g_string_append_c (type_desc, '"');
}
if (! strcmp (name, COMPOSE_PROC))
{
procedure = pika_image_procedure_new (plug_in, name,
PIKA_PDB_PROC_TYPE_PLUGIN,
compose_run, NULL, NULL);
pika_procedure_set_image_types (procedure, "GRAY*");
pika_procedure_set_sensitivity_mask (procedure,
PIKA_PROCEDURE_SENSITIVE_DRAWABLE |
PIKA_PROCEDURE_SENSITIVE_DRAWABLES |
PIKA_PROCEDURE_SENSITIVE_NO_DRAWABLES);
pika_procedure_set_menu_label (procedure, _("C_ompose..."));
pika_procedure_add_menu_path (procedure, "<Image>/Colors/Components");
pika_procedure_set_documentation (procedure,
_("Create an image using multiple "
"gray images as color channels"),
"This function creates a new image from "
"multiple gray images",
name);
pika_procedure_set_attribution (procedure,
"Peter Kirchgessner",
"Peter Kirchgessner (peter@kirchgessner.net)",
"1997");
PIKA_PROC_ARG_IMAGE (procedure, "image-2",
"Image 2",
"Second input image",
TRUE,
G_PARAM_READWRITE);
PIKA_PROC_ARG_IMAGE (procedure, "image-3",
"Image 3",
"Third input image",
TRUE,
G_PARAM_READWRITE);
PIKA_PROC_ARG_IMAGE (procedure, "image-4",
"Image 4",
"Fourth input image",
TRUE,
G_PARAM_READWRITE);
PIKA_PROC_ARG_STRING (procedure, "compose-type",
"Compose type",
type_desc->str,
"RGB",
G_PARAM_READWRITE);
PIKA_PROC_VAL_IMAGE (procedure, "new-image",
"New image",
"Output image",
FALSE,
G_PARAM_READWRITE);
}
else if (! strcmp (name, DRAWABLE_COMPOSE_PROC))
{
procedure = pika_image_procedure_new (plug_in, name,
PIKA_PDB_PROC_TYPE_PLUGIN,
compose_run, NULL, NULL);
pika_procedure_set_image_types (procedure, "GRAY*");
pika_procedure_set_sensitivity_mask (procedure,
PIKA_PROCEDURE_SENSITIVE_DRAWABLE);
pika_procedure_set_documentation (procedure,
"Compose an image from multiple "
"drawables of gray images",
"This function creates a new image from "
"multiple drawables of gray images",
name);
pika_procedure_set_attribution (procedure,
"Peter Kirchgessner",
"Peter Kirchgessner (peter@kirchgessner.net)",
"1998");
PIKA_PROC_ARG_DRAWABLE (procedure, "drawable-2",
"Drawable 2",
"Second input drawable",
TRUE,
G_PARAM_READWRITE);
PIKA_PROC_ARG_DRAWABLE (procedure, "drawable-3",
"Drawable 3",
"Third input drawable",
TRUE,
G_PARAM_READWRITE);
PIKA_PROC_ARG_DRAWABLE (procedure, "drawable-4",
"Drawable 4",
"Fourth input drawable",
TRUE,
G_PARAM_READWRITE);
PIKA_PROC_ARG_STRING (procedure, "compose-type",
"Compose type",
type_desc->str,
"RGB",
G_PARAM_READWRITE);
PIKA_PROC_VAL_IMAGE (procedure, "new-image",
"New image",
"Output image",
FALSE,
G_PARAM_READWRITE);
}
else if (! strcmp (name, RECOMPOSE_PROC))
{
procedure = pika_image_procedure_new (plug_in, name,
PIKA_PDB_PROC_TYPE_PLUGIN,
compose_run, NULL, NULL);
pika_procedure_set_image_types (procedure, "GRAY*");
pika_procedure_set_sensitivity_mask (procedure,
PIKA_PROCEDURE_SENSITIVE_DRAWABLE |
PIKA_PROCEDURE_SENSITIVE_DRAWABLES |
PIKA_PROCEDURE_SENSITIVE_NO_DRAWABLES);
pika_procedure_set_menu_label (procedure, _("R_ecompose"));
pika_procedure_add_menu_path (procedure, "<Image>/Colors/Components");
pika_procedure_set_documentation (procedure,
_("Recompose an image that was "
"previously decomposed"),
"This function recombines the grayscale "
"layers produced by Decompose "
"into a single RGB or RGBA layer, and "
"replaces the originally decomposed "
"layer with the result.",
name);
pika_procedure_set_attribution (procedure,
"Bill Skaggs",
"Bill Skaggs",
"2004");
}
g_string_free (type_desc, TRUE);
return procedure;
}
static PikaValueArray *
compose_run (PikaProcedure *procedure,
PikaRunMode run_mode,
PikaImage *image,
gint n_drawables,
PikaDrawable **drawables,
const PikaValueArray *args,
gpointer run_data)
{
PikaValueArray *return_vals;
PikaDrawable *drawable = NULL;
const gchar *name = pika_procedure_get_name (procedure);
gint compose_by_drawable;
gint i;
gegl_init (NULL, NULL);
compose_by_drawable = ! strcmp (name, DRAWABLE_COMPOSE_PROC);
if (compose_by_drawable)
{
if (n_drawables != 1)
{
GError *error = NULL;
g_set_error (&error, PIKA_PLUG_IN_ERROR, 0,
_("Procedure '%s' only works with one drawable."),
name);
return pika_procedure_new_return_values (procedure,
PIKA_PDB_CALLING_ERROR,
error);
}
else
{
drawable = drawables[0];
}
}
if (! strcmp (name, RECOMPOSE_PROC))
{
PikaParasite *parasite = pika_image_get_parasite (image,
"decompose-data");
if (! parasite)
{
g_message (_("You can only run 'Recompose' if the active image "
"was originally produced by 'Decompose'."));
return pika_procedure_new_return_values (procedure,
PIKA_PDB_EXECUTION_ERROR,
NULL);
}
else
{
gchar *parasite_data;
guint32 parasite_size;
gint source;
gint input[4] = { 0, };
gint nret;
parasite_data = (gchar *) pika_parasite_get_data (parasite, &parasite_size);
parasite_data = g_strndup (parasite_data, parasite_size);
nret = sscanf (parasite_data,
"source=%d type=%31s %d %d %d %d",
&source,
composevals.compose_type,
input,
input + 1,
input + 2,
input + 3);
pika_parasite_free (parasite);
g_free (parasite_data);
if (nret < 5)
{
g_message (_("Error scanning 'decompose-data' parasite: "
"too few layers found"));
return pika_procedure_new_return_values (procedure,
PIKA_PDB_EXECUTION_ERROR,
NULL);
}
compose_by_drawable = TRUE;
composevals.do_recompose = TRUE;
composevals.source_layer = pika_layer_get_by_id (source);
if (! composevals.source_layer)
{
g_message (_("Cannot recompose: Specified source layer ID %d "
"not found"),
source);
return pika_procedure_new_return_values (procedure,
PIKA_PDB_EXECUTION_ERROR,
NULL);
}
for (i = 0; i < MAX_COMPOSE_IMAGES; i++)
{
composevals.inputs[i].is_object = TRUE;
composevals.inputs[i].comp.object = pika_drawable_get_by_id (input[i]);
/* fourth input is optional */
if (i == 2 && nret == 5)
break;
if (! composevals.inputs[i].comp.object)
{
g_message (_("Cannot recompose: Specified layer #%d ID %d "
"not found"),
i + 1, input[i]);
return pika_procedure_new_return_values (procedure,
PIKA_PDB_EXECUTION_ERROR,
NULL);
}
}
}
}
else
{
composevals.do_recompose = FALSE;
switch (run_mode)
{
case PIKA_RUN_INTERACTIVE:
pika_get_data (name, &composevals);
compose_by_drawable = TRUE;
/* Get a drawable-ID of the image */
if (! strcmp (name, COMPOSE_PROC))
{
PikaLayer **layers;
gint nlayers;
layers = pika_image_get_layers (image, &nlayers);
if (! layers)
{
g_message (_("Could not get layers for image %d"),
(gint) pika_image_get_id (image));
return pika_procedure_new_return_values (procedure,
PIKA_PDB_EXECUTION_ERROR,
NULL);
}
drawable = PIKA_DRAWABLE (layers[0]);
g_free (layers);
}
if (! compose_dialog (composevals.compose_type, drawable))
return pika_procedure_new_return_values (procedure,
PIKA_PDB_CANCEL,
NULL);
break;
case PIKA_RUN_NONINTERACTIVE:
if (compose_by_drawable)
{
composevals.inputs[0].comp.object = drawable;
composevals.inputs[1].comp.object = PIKA_VALUES_GET_DRAWABLE (args, 0);
composevals.inputs[2].comp.object = PIKA_VALUES_GET_DRAWABLE (args, 1);
composevals.inputs[3].comp.object = PIKA_VALUES_GET_DRAWABLE (args, 2);
}
else
{
composevals.inputs[0].comp.object = image;
composevals.inputs[1].comp.object = PIKA_VALUES_GET_IMAGE (args, 0);
composevals.inputs[2].comp.object = PIKA_VALUES_GET_IMAGE (args, 1);
composevals.inputs[3].comp.object = PIKA_VALUES_GET_IMAGE (args, 2);
}
g_strlcpy (composevals.compose_type,
PIKA_VALUES_GET_STRING (args, 3),
sizeof (composevals.compose_type));
for (i = 0; i < MAX_COMPOSE_IMAGES; i++)
{
if (! composevals.inputs[i].comp.object)
{
composevals.inputs[i].is_object = FALSE;
composevals.inputs[i].comp.val = 0;
}
else
{
composevals.inputs[i].is_object = TRUE;
}
}
break;
case PIKA_RUN_WITH_LAST_VALS:
pika_get_data (name, &composevals);
compose_by_drawable = TRUE;
break;
default:
break;
}
}
pika_progress_init (_("Composing"));
image = compose (composevals.compose_type,
composevals.inputs,
compose_by_drawable);
if (! image)
return pika_procedure_new_return_values (procedure,
PIKA_PDB_EXECUTION_ERROR,
NULL);
if (composevals.do_recompose)
{
pika_displays_flush ();
}
else
{
pika_image_undo_enable (image);
pika_image_clean_all (image);
if (run_mode != PIKA_RUN_NONINTERACTIVE)
pika_display_new (image);
}
if (run_mode == PIKA_RUN_INTERACTIVE)
pika_set_data (name, &composevals, sizeof (ComposeVals));
return_vals = pika_procedure_new_return_values (procedure,
PIKA_PDB_SUCCESS,
NULL);
if (strcmp (name, RECOMPOSE_PROC))
PIKA_VALUES_SET_IMAGE (return_vals, 1, image);
return return_vals;
}
static void
cpn_affine_transform (GeglBuffer *buffer,
gdouble min,
gdouble max)
{
GeglBufferIterator *gi;
const gdouble scale = max - min;
const gdouble offset = min;
/* We want to scale values linearly, regardless of the format of the buffer */
gegl_buffer_set_format (buffer, babl_format ("Y double"));
gi = gegl_buffer_iterator_new (buffer, NULL, 0, NULL,
GEGL_ACCESS_READWRITE, GEGL_ABYSS_NONE, 1);
while (gegl_buffer_iterator_next (gi))
{
gdouble *data = gi->items[0].data;
guint k;
for (k = 0; k < gi->length; k++)
{
data[k] = data[k] * scale + offset;
}
}
}
static void
fill_buffer_from_components (GeglBuffer *temp[MAX_COMPOSE_IMAGES],
GeglBuffer *dst,
gint num_cpn,
ComposeInput *inputs,
gdouble mask_vals[MAX_COMPOSE_IMAGES])
{
GeglBufferIterator *gi;
gint j;
gi = gegl_buffer_iterator_new (dst, NULL, 0, NULL,
GEGL_ACCESS_WRITE, GEGL_ABYSS_NONE, 10);
for (j = 0; j < num_cpn; j++)
{
if (inputs[j].is_object)
gegl_buffer_iterator_add (gi, temp[j], NULL, 0, NULL,
GEGL_ACCESS_READ, GEGL_ABYSS_NONE);
}
while (gegl_buffer_iterator_next (gi))
{
gdouble *src_data[MAX_COMPOSE_IMAGES];
gdouble *dst_data = (gdouble*) gi->items[0].data;
gulong k, count;
count = 1;
for (j = 0; j < num_cpn; j++)
if (inputs[j].is_object)
src_data[j] = (gdouble*) gi->items[count++].data;
for (k = 0; k < gi->length; k++)
{
gulong pos = k * num_cpn;
for (j = 0; j < num_cpn; j++)
{
if (inputs[j].is_object)
dst_data[pos+j] = src_data[j][k];
else
dst_data[pos+j] = mask_vals[j];
}
}
}
}
static void
perform_composition (COMPOSE_DSC curr_compose_dsc,
GeglBuffer *buffer_src[MAX_COMPOSE_IMAGES],
GeglBuffer *buffer_dst,
ComposeInput *inputs,
gint num_images)
{
const Babl *dst_format;
GeglBuffer *temp[MAX_COMPOSE_IMAGES];
GeglBuffer *dst_temp;
const GeglRectangle *extent = NULL;
const COMPONENT_DSC *components;
gdouble mask_vals[MAX_COMPOSE_IMAGES];
gint i;
components = curr_compose_dsc.components;
/* Get all individual components in gray buffers */
for (i = 0; i < num_images; i++)
{
COMPONENT_DSC cpn_dsc = components[i];
const Babl *gray_format;
if (cpn_dsc.is_perceptual)
gray_format = babl_format ("Y' double");
else
gray_format = babl_format ("Y double");
if (! inputs[i].is_object)
{
const Babl *fish = babl_fish (babl_format ("Y' u8"), gray_format);
babl_process (fish, &inputs[i].comp.val, &mask_vals[i], 1);
mask_vals[i] = mask_vals[i] * (cpn_dsc.range_max - cpn_dsc.range_min) + cpn_dsc.range_min;
}
else
{
extent = gegl_buffer_get_extent (buffer_src[i]);
temp[i] = gegl_buffer_new (extent, gray_format);
gegl_buffer_copy (buffer_src[i], NULL, GEGL_ABYSS_NONE, temp[i], NULL);
if (cpn_dsc.range_min != 0.0 || cpn_dsc.range_max != 1.0)
cpn_affine_transform (temp[i], cpn_dsc.range_min, cpn_dsc.range_max);
}
pika_progress_update ((gdouble) i / (gdouble) (num_images + 1.0));
}
dst_format = babl_format_new (babl_model (curr_compose_dsc.babl_model),
babl_type ("double"),
babl_component (components[0].babl_name),
num_images > 1 ? babl_component (components[1].babl_name) : NULL,
num_images > 2 ? babl_component (components[2].babl_name) : NULL,
num_images > 3 ? babl_component (components[3].babl_name) : NULL,
NULL);
/* extent is not NULL because there is at least one drawable */
dst_temp = gegl_buffer_new (extent, dst_format);
/* Gather all individual components in the dst_format buffer */
fill_buffer_from_components (temp, dst_temp, num_images, inputs, mask_vals);
pika_progress_update ((gdouble) num_images / (gdouble) (num_images + 1.0));
/* Copy back to the format PIKA wants (and perform the conversion in itself) */
gegl_buffer_copy (dst_temp, NULL, GEGL_ABYSS_NONE, buffer_dst, NULL);
for (i = 0; i< num_images; i++)
if (inputs[i].is_object)
g_object_unref (temp[i]);
g_object_unref (dst_temp);
}
/* Compose an image from several gray-images */
static PikaImage *
compose (const gchar *compose_type,
ComposeInput *inputs,
gboolean compose_by_drawable)
{
gint width, height;
gint num_images, compose_idx;
gint i, j;
gint num_layers;
PikaLayer *layer_dst;
PikaImage *image_dst;
gint first_object;
PikaImageType gdtype_dst;
GeglBuffer *buffer_src[MAX_COMPOSE_IMAGES];
GeglBuffer *buffer_dst;
PikaPrecision precision;
/* Search type of composing */
compose_idx = -1;
for (j = 0; j < G_N_ELEMENTS (compose_dsc); j++)
{
if (g_ascii_strcasecmp (compose_type, compose_dsc[j].compose_type) == 0)
{
compose_idx = j;
break;
}
}
if (compose_idx < 0)
return NULL;
num_images = compose_dsc[compose_idx].num_images;
/* Check that at least one image or one drawable is provided */
first_object = -1;
for (i = 0; i < num_images; i++)
{
if (inputs[i].is_object)
{
first_object = i;
break;
}
}
if (first_object == -1)
{
g_message (_("At least one image is needed to compose"));
return NULL;
}
/* Check image sizes */
if (compose_by_drawable)
{
PikaImage *first_image = pika_item_get_image (inputs[first_object].comp.object);
width = pika_drawable_get_width (inputs[first_object].comp.object);
height = pika_drawable_get_height (inputs[first_object].comp.object);
precision = pika_image_get_precision (first_image);
for (j = first_object + 1; j < num_images; j++)
{
if (inputs[j].is_object)
{
if ((width != pika_drawable_get_width (inputs[j].comp.object)) ||
(height != pika_drawable_get_height (inputs[j].comp.object)))
{
g_message (_("Drawables have different size"));
return NULL;
}
}
}
for (j = 0; j < num_images; j++)
{
if (inputs[j].is_object)
buffer_src[j] = pika_drawable_get_buffer (inputs[j].comp.object);
else
buffer_src[j] = NULL;
}
}
else /* Compose by image */
{
width = pika_image_get_width (inputs[first_object].comp.object);
height = pika_image_get_height (inputs[first_object].comp.object);
precision = pika_image_get_precision (inputs[first_object].comp.object);
for (j = first_object + 1; j < num_images; j++)
{
if (inputs[j].is_object)
{
if ((width != pika_image_get_width (inputs[j].comp.object)) ||
(height != pika_image_get_height (inputs[j].comp.object)))
{
g_message (_("Images have different size"));
return NULL;
}
}
}
/* Get first layer/drawable for all input images */
for (j = 0; j < num_images; j++)
{
if (inputs[j].is_object)
{
PikaLayer **layers;
/* Get first layer of image */
layers = pika_image_get_layers (inputs[j].comp.object, &num_layers);
if (! layers)
{
g_message (_("Error in getting layer IDs"));
return NULL;
}
/* Get drawable for layer */
buffer_src[j] = pika_drawable_get_buffer (PIKA_DRAWABLE (layers[0]));
g_free (layers);
}
}
}
/* Unless recomposing, create new image */
if (composevals.do_recompose)
{
layer_dst = composevals.source_layer;
image_dst = pika_item_get_image (PIKA_ITEM (layer_dst));
buffer_dst = pika_drawable_get_shadow_buffer (PIKA_DRAWABLE (layer_dst));
}
else
{
gdtype_dst = ((babl_model (compose_dsc[compose_idx].babl_model) == babl_model ("RGBA")) ?
PIKA_RGBA_IMAGE : PIKA_RGB_IMAGE);
image_dst = create_new_image (g_file_new_for_path (compose_dsc[compose_idx].filename),
width, height, gdtype_dst, precision,
&layer_dst, &buffer_dst);
}
if (! compose_by_drawable)
{
gdouble xres, yres;
pika_image_get_resolution (inputs[first_object].comp.object, &xres, &yres);
pika_image_set_resolution (image_dst, xres, yres);
}
perform_composition (compose_dsc[compose_idx],
buffer_src,
buffer_dst,
inputs,
num_images);
pika_progress_update (1.0);
for (j = 0; j < num_images; j++)
{
if (inputs[j].is_object)
g_object_unref (buffer_src[j]);
}
g_object_unref (buffer_dst);
if (composevals.do_recompose)
pika_drawable_merge_shadow (PIKA_DRAWABLE (layer_dst), TRUE);
pika_drawable_update (PIKA_DRAWABLE (layer_dst), 0, 0,
pika_drawable_get_width (PIKA_DRAWABLE (layer_dst)),
pika_drawable_get_height (PIKA_DRAWABLE (layer_dst)));
return image_dst;
}
/* Create an image. Sets layer_ID, drawable and rgn. Returns image */
static PikaImage *
create_new_image (GFile *file,
guint width,
guint height,
PikaImageType gdtype,
PikaPrecision precision,
PikaLayer **layer,
GeglBuffer **buffer)
{
PikaImage *image;
PikaImageBaseType gitype;
if ((gdtype == PIKA_GRAY_IMAGE) || (gdtype == PIKA_GRAYA_IMAGE))
gitype = PIKA_GRAY;
else if ((gdtype == PIKA_INDEXED_IMAGE) || (gdtype == PIKA_INDEXEDA_IMAGE))
gitype = PIKA_INDEXED;
else
gitype = PIKA_RGB;
image = pika_image_new_with_precision (width, height, gitype, precision);
pika_image_undo_disable (image);
pika_image_set_file (image, file);
*layer = pika_layer_new (image, _("Background"), width, height,
gdtype,
100,
pika_image_get_default_new_layer_mode (image));
pika_image_insert_layer (image, *layer, NULL, 0);
*buffer = pika_drawable_get_buffer (PIKA_DRAWABLE (*layer));
return image;
}
static gboolean
compose_dialog (const gchar *compose_type,
PikaDrawable *drawable)
{
GtkWidget *dialog;
GtkWidget *main_vbox;
GtkWidget *frame;
GtkWidget *vbox;
GtkWidget *hbox;
GtkWidget *label;
GtkWidget *combo;
GtkWidget *grid;
GtkSizeGroup *size_group;
PikaLayer **layer_list;
gint nlayers;
gint j;
gboolean run;
/* Check default compose type */
composeint.compose_idx = 0;
for (j = 0; j < G_N_ELEMENTS (compose_dsc); j++)
{
if (g_ascii_strcasecmp (compose_type, compose_dsc[j].compose_type) == 0)
{
composeint.compose_idx = j;
break;
}
}
/* Save original image width/height */
composeint.width = pika_drawable_get_width (drawable);
composeint.height = pika_drawable_get_height (drawable);
pika_ui_init (PLUG_IN_BINARY);
layer_list = pika_image_get_layers (pika_item_get_image (PIKA_ITEM (drawable)),
&nlayers);
dialog = pika_dialog_new (_("Compose"), PLUG_IN_ROLE,
NULL, 0,
pika_standard_help_func, COMPOSE_PROC,
_("_Cancel"), GTK_RESPONSE_CANCEL,
_("_OK"), GTK_RESPONSE_OK,
NULL);
pika_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
GTK_RESPONSE_OK,
GTK_RESPONSE_CANCEL,
-1);
g_signal_connect (dialog, "response",
G_CALLBACK (check_response),
NULL);
pika_window_set_transient (GTK_WINDOW (dialog));
main_vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
gtk_container_set_border_width (GTK_CONTAINER (main_vbox), 12);
gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (dialog))),
main_vbox, TRUE, TRUE, 0);
gtk_widget_show (main_vbox);
/* Compose type combo */
frame = pika_frame_new (_("Compose Channels"));
gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
gtk_container_add (GTK_CONTAINER (frame), hbox);
gtk_widget_show (hbox);
size_group = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL);
label = gtk_label_new_with_mnemonic (_("Color _model:"));
gtk_label_set_xalign (GTK_LABEL (label), 0.0);
gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
gtk_size_group_add_widget (size_group, label);
g_object_unref (size_group);
combo = g_object_new (PIKA_TYPE_INT_COMBO_BOX, NULL);
for (j = 0; j < G_N_ELEMENTS (compose_dsc); j++)
{
gchar *label = g_strdup (gettext (compose_dsc[j].compose_type));
gchar *l;
for (l = label; *l; l++)
if (*l == '-' || *l == '_')
*l = ' ';
pika_int_combo_box_append (PIKA_INT_COMBO_BOX (combo),
PIKA_INT_STORE_LABEL, label,
PIKA_INT_STORE_VALUE, j,
-1);
g_free (label);
}
gtk_box_pack_start (GTK_BOX (hbox), combo, TRUE, TRUE, 0);
gtk_widget_show (combo);
gtk_label_set_mnemonic_widget (GTK_LABEL (label), combo);
/* Channel representation grid */
frame = pika_frame_new (_("Channel Representations"));
gtk_box_pack_start (GTK_BOX (main_vbox), frame, TRUE, TRUE, 0);
gtk_widget_show (frame);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
gtk_container_add (GTK_CONTAINER (frame), vbox);
gtk_widget_show (vbox);
grid = gtk_grid_new ();
gtk_grid_set_row_spacing (GTK_GRID (grid), 6);
gtk_grid_set_column_spacing (GTK_GRID (grid), 6);
gtk_box_pack_start (GTK_BOX (vbox), grid, FALSE, FALSE, 0);
gtk_widget_show (grid);
for (j = 0; j < MAX_COMPOSE_IMAGES; j++)
{
GtkWidget *image;
GtkWidget *label;
GtkWidget *combo;
GtkWidget *scale;
GtkTreeIter iter;
GtkTreeModel *model;
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
gtk_grid_attach (GTK_GRID (grid), hbox, 0, j, 1, 1);
// GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (hbox);
gtk_size_group_add_widget (size_group, hbox);
composeint.channel_icon[j] = image = gtk_image_new ();
gtk_box_pack_start (GTK_BOX (hbox), image, FALSE, FALSE, 0);
gtk_widget_show (image);
composeint.channel_label[j] = label = gtk_label_new_with_mnemonic ("");
gtk_label_set_xalign (GTK_LABEL (label), 0.0);
gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
if (composeint.compose_idx >= 0 &&
nlayers >= compose_dsc[composeint.compose_idx].num_images &&
j < nlayers)
{
composeint.selected[j].comp.object = layer_list[j];
}
else
{
composeint.selected[j].comp.object = drawable;
}
composeint.selected[j].is_object = TRUE;
combo = pika_drawable_combo_box_new (check_gray, NULL, NULL);
composeint.channel_menu[j] = combo;
model = gtk_combo_box_get_model (GTK_COMBO_BOX (combo));
gtk_list_store_append (GTK_LIST_STORE (model), &iter);
gtk_list_store_set (GTK_LIST_STORE (model), &iter,
PIKA_INT_STORE_VALUE, -1,
PIKA_INT_STORE_LABEL, _("Mask value"),
PIKA_INT_STORE_ICON_NAME, PIKA_ICON_CHANNEL_GRAY,
-1);
gtk_grid_attach (GTK_GRID (grid), combo, 1, j, 1, 1);
// GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
gtk_widget_show (combo);
gtk_label_set_mnemonic_widget (GTK_LABEL (label), combo);
scale = pika_color_scale_entry_new (NULL, 255.0, 0.0, 255.0, 0);
gtk_grid_attach (GTK_GRID (grid), scale, 2, j, 3, 1);
gtk_widget_show (scale);
composeint.scales[j] = scale;
gtk_widget_set_sensitive (scale, FALSE);
g_signal_connect (scale, "value-changed",
G_CALLBACK (scale_callback),
&composeint.selected[j]);
/* This has to be connected last otherwise it will emit before
* combo_callback has any scale and spinbutton to work with
*/
pika_int_combo_box_connect (PIKA_INT_COMBO_BOX (combo),
pika_item_get_id (composeint.selected[j].comp.object),
G_CALLBACK (combo_callback),
GINT_TO_POINTER (j), NULL);
}
g_free (layer_list);
/* Calls the combo callback and sets icons, labels and sensitivity */
pika_int_combo_box_connect (PIKA_INT_COMBO_BOX (combo),
composeint.compose_idx,
G_CALLBACK (type_combo_callback),
NULL, NULL);
gtk_widget_show (dialog);
run = (pika_dialog_run (PIKA_DIALOG (dialog)) == GTK_RESPONSE_OK);
gtk_widget_destroy (dialog);
if (run)
{
gint j;
for (j = 0; j < MAX_COMPOSE_IMAGES; j++)
{
composevals.inputs[j].is_object = composeint.selected[j].is_object;
if (composevals.inputs[j].is_object)
composevals.inputs[j].comp.object = composeint.selected[j].comp.object;
else
composevals.inputs[j].comp.val = composeint.selected[j].comp.val;
}
strcpy (composevals.compose_type,
compose_dsc[composeint.compose_idx].compose_type);
}
return run;
}
/* Compose interface functions */
static gboolean
check_gray (PikaImage *image,
PikaItem *drawable,
gpointer data)
{
return ((pika_image_get_base_type (image) == PIKA_GRAY) &&
(pika_image_get_width (image) == composeint.width) &&
(pika_image_get_height (image) == composeint.height));
}
static void
check_response (GtkWidget *dialog,
gint response,
gpointer data)
{
switch (response)
{
case GTK_RESPONSE_OK:
{
gint i;
gint nb = 0;
gboolean has_image = FALSE;
nb = compose_dsc[composeint.compose_idx].num_images;
for (i = 0; i < nb; i++)
{
if (composeint.selected[i].is_object)
{
has_image = TRUE;
break;
}
}
if (! has_image)
{
GtkWidget *d;
g_signal_stop_emission_by_name (dialog, "response");
d = gtk_message_dialog_new (GTK_WINDOW (dialog),
GTK_DIALOG_DESTROY_WITH_PARENT |
GTK_DIALOG_MODAL,
GTK_MESSAGE_ERROR,
GTK_BUTTONS_CLOSE,
_("At least one image is needed to compose"));
gtk_dialog_run (GTK_DIALOG (d));
gtk_widget_destroy (d);
}
}
break;
default:
break;
}
}
static void
combo_callback (PikaIntComboBox *widget,
gpointer data)
{
gint id;
gint n;
pika_int_combo_box_get_active (PIKA_INT_COMBO_BOX (widget), &id);
n = GPOINTER_TO_INT (data);
if (id == -1)
{
gtk_widget_set_sensitive (composeint.scales[n], TRUE);
composeint.selected[n].is_object = FALSE;
composeint.selected[n].comp.val =
pika_label_spin_get_value (PIKA_LABEL_SPIN (composeint.scales[n]));
}
else
{
gtk_widget_set_sensitive (composeint.scales[n], FALSE);
composeint.selected[n].is_object = TRUE;
composeint.selected[n].comp.object = pika_drawable_get_by_id (id);
}
}
static void
scale_callback (PikaLabelSpin *scale,
ComposeInput *input)
{
input->comp.val = pika_label_spin_get_value (scale);
}
static void
type_combo_callback (PikaIntComboBox *combo,
gpointer data)
{
if (pika_int_combo_box_get_active (combo, &composeint.compose_idx))
{
gboolean combo4;
gboolean scale4;
gint compose_idx;
gint j;
compose_idx = composeint.compose_idx;
for (j = 0; j < MAX_COMPOSE_IMAGES; j++)
{
GtkWidget *label = composeint.channel_label[j];
GtkWidget *image = composeint.channel_icon[j];
const gchar *text = compose_dsc[compose_idx].components[j].name;
const gchar *icon = compose_dsc[compose_idx].components[j].icon;
gtk_label_set_text_with_mnemonic (GTK_LABEL (label),
text ? gettext (text) : "");
if (icon)
{
gtk_image_set_from_icon_name (GTK_IMAGE (image),
icon, GTK_ICON_SIZE_BUTTON);
gtk_widget_show (image);
}
else
{
gtk_image_clear (GTK_IMAGE (image));
gtk_widget_hide (image);
}
}
/* Set sensitivity of last menu */
combo4 = (compose_dsc[compose_idx].num_images == 4);
gtk_widget_set_sensitive (composeint.channel_menu[3], combo4);
scale4 = combo4 && !composeint.selected[3].is_object;
gtk_widget_set_sensitive (composeint.scales[3], scale4);
}
}
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