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gimp/plug-ins/common/mapcolor.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
* mapcolor plugin
* Copyright (C) 1998 Peter Kirchgessner
* email: 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
/* Event history:
* V 1.00, PK, 26-Oct-98: Creation.
* V 1.01, PK, 21-Nov-99: Fix problem with working on layered images
* Internationalization
* V 1.02, PK, 19-Mar-00: Better explaining text/dialogue
* Preview added
* Fix problem with divide by zero
* V 1.03,neo, 22-May-00: Fixed divide by zero in preview code.
*/
#include "config.h"
#include <string.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "libgimp/stdplugins-intl.h"
static const gchar dversio[] = "v1.03 22-May-00";
#define COLOR_MAP_PROC "plug-in-color-map"
#define COLOR_ADJUST_PROC "plug-in-color-adjust"
#define PLUG_IN_BINARY "mapcolor"
#define PRV_WIDTH 50
#define PRV_HEIGHT 20
typedef struct
{
GimpRGB colors[4];
gint32 map_mode;
gboolean preview;
} PluginValues;
PluginValues plvals =
{
{
{ 0.0, 0.0, 0.0, 1.0 },
{ 1.0, 1.0, 1.0, 1.0 },
{ 0.0, 0.0, 0.0, 1.0 },
{ 1.0, 1.0, 1.0, 1.0 },
},
0
};
static guchar redmap[256], greenmap[256], bluemap[256];
/* Declare some local functions.
*/
static void query (void);
static void run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals);
const GimpPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run, /* run_proc */
};
static void update_img_preview (GimpDrawable *drawable,
GimpPreview *preview);
static gboolean mapcolor_dialog (GimpDrawable *drawable);
static void get_mapping (GimpRGB *src_col1,
GimpRGB *src_col2,
GimpRGB *dst_col1,
GimpRGB *dst_col2,
gint32 map_mode,
guchar *redmap,
guchar *greenmap,
guchar *bluemap);
static void add_color_button (gint csel_index,
gint left,
gint top,
GtkWidget *table,
GtkWidget *preview);
static void color_mapping (GimpDrawable *drawable);
static gchar *csel_title[4] =
{
N_("First Source Color"),
N_("Second Source Color"),
N_("First Destination Color"),
N_("Second Destination Color")
};
MAIN ()
static void
query (void)
{
static const GimpParamDef adjust_args[] =
{
{ GIMP_PDB_INT32, "run-mode", "Interactive, non-interactive" },
{ GIMP_PDB_IMAGE, "image", "Input image (not used)" },
{ GIMP_PDB_DRAWABLE, "drawable", "Input drawable to adjust" }
};
static const GimpParamDef map_args[] =
{
{ GIMP_PDB_INT32, "run-mode", "Interactive, non-interactive" },
{ GIMP_PDB_IMAGE, "image", "Input image (not used)" },
{ GIMP_PDB_DRAWABLE, "drawable", "Input drawable where colors are to map" },
{ GIMP_PDB_COLOR, "srccolor-1", "First source color" },
{ GIMP_PDB_COLOR, "srccolor-2", "Second source color" },
{ GIMP_PDB_COLOR, "dstcolor-1", "First destination color" },
{ GIMP_PDB_COLOR, "dstcolor-2", "Second destination color" },
{ GIMP_PDB_INT32, "map-mode", "Mapping mode (0: linear, others reserved)" }
};
gimp_install_procedure (COLOR_ADJUST_PROC,
N_("Map colors sending foreground to black, background to white"),
"The current foreground color is mapped to black "
"(black point), the current background color is "
"mapped to white (white point). Intermediate "
"colors are interpolated",
"Peter Kirchgessner",
"Peter Kirchgessner",
dversio,
N_("Adjust _Foreground & Background"),
"RGB*",
GIMP_PLUGIN,
G_N_ELEMENTS (adjust_args), 0,
adjust_args, NULL);
gimp_plugin_menu_register (COLOR_ADJUST_PROC, "<Image>/Colors/Map");
gimp_install_procedure (COLOR_MAP_PROC,
N_("Map color range specified by two colors "
"to another range"),
"Map color range specified by two colors"
"to color range specified by two other color. "
"Intermediate colors are interpolated.",
"Peter Kirchgessner",
"Peter Kirchgessner",
dversio,
N_("Color Range _Mapping..."),
"RGB*",
GIMP_PLUGIN,
G_N_ELEMENTS (map_args), 0,
map_args, NULL);
gimp_plugin_menu_register (COLOR_MAP_PROC, "<Image>/Colors/Map");
}
static void
run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals)
{
static GimpParam values[1];
GimpRunMode run_mode;
GimpDrawable *drawable = NULL;
GimpPDBStatusType status = GIMP_PDB_SUCCESS;
gint j;
INIT_I18N ();
run_mode = param[0].data.d_int32;
*nreturn_vals = 1;
*return_vals = values;
values[0].type = GIMP_PDB_STATUS;
values[0].data.d_status = status;
while (status == GIMP_PDB_SUCCESS)
{
if (nparams < 3)
{
status = GIMP_PDB_CALLING_ERROR;
break;
}
/* Make sure the drawable is RGB color */
drawable = gimp_drawable_get (param[2].data.d_drawable);
if (!gimp_drawable_is_rgb (drawable->drawable_id))
{
g_message (_("Cannot operate on gray or indexed color images."));
status = GIMP_PDB_EXECUTION_ERROR;
break;
}
if (strcmp (name, COLOR_ADJUST_PROC) == 0)
{
if (nparams != 3) /* Make sure all the arguments are there */
{
status = GIMP_PDB_CALLING_ERROR;
break;
}
gimp_context_get_foreground (plvals.colors);
gimp_context_get_background (plvals.colors + 1);
gimp_rgb_set (plvals.colors + 2, 0.0, 0.0, 0.0);
gimp_rgb_set (plvals.colors + 3, 1.0, 1.0, 1.0);
plvals.map_mode = 0;
gimp_progress_init (_("Adjusting foreground and background colors"));
color_mapping (drawable);
break;
}
if (strcmp (name, COLOR_MAP_PROC) == 0)
{
if (run_mode == GIMP_RUN_NONINTERACTIVE)
{
if (nparams != 8) /* Make sure all the arguments are there */
{
status = GIMP_PDB_CALLING_ERROR;
break;
}
for (j = 0; j < 4; j++)
{
plvals.colors[j] = param[3+j].data.d_color;
}
plvals.map_mode = param[7].data.d_int32;
}
else if (run_mode == GIMP_RUN_INTERACTIVE)
{
gimp_get_data (name, &plvals);
gimp_context_get_foreground (plvals.colors);
gimp_context_get_background (plvals.colors + 1);
if (!mapcolor_dialog (drawable))
break;
}
else if (run_mode == GIMP_RUN_WITH_LAST_VALS)
{
gimp_get_data (name, &plvals);
}
else
{
status = GIMP_PDB_CALLING_ERROR;
break;
}
gimp_progress_init (_("Mapping colors"));
color_mapping (drawable);
if (run_mode == GIMP_RUN_INTERACTIVE)
gimp_set_data (name, &plvals, sizeof (plvals));
break;
}
status = GIMP_PDB_EXECUTION_ERROR;
}
if ((status == GIMP_PDB_SUCCESS) && (run_mode != GIMP_RUN_NONINTERACTIVE))
gimp_displays_flush ();
if (drawable != NULL)
gimp_drawable_detach (drawable);
values[0].data.d_status = status;
}
static void
update_img_preview (GimpDrawable *drawable,
GimpPreview *preview)
{
guchar redmap[256], greenmap[256], bluemap[256];
gint width, height, bpp;
gboolean has_alpha;
guchar *src, *dest, *s, *d;
gint j;
get_mapping (plvals.colors,
plvals.colors + 1,
plvals.colors + 2,
plvals.colors + 3,
plvals.map_mode,
redmap, greenmap, bluemap);
src = gimp_zoom_preview_get_source (GIMP_ZOOM_PREVIEW (preview),
&width, &height, &bpp);
has_alpha = gimp_drawable_has_alpha (drawable->drawable_id);
j = width * height;
dest = g_new (guchar, j * bpp);
s = src; d = dest;
while (j-- > 0)
{
*(d++) = redmap[*(s++)];
*(d++) = greenmap[*(s++)];
*(d++) = bluemap[*(s++)];
if (has_alpha)
*(d++) = *(s++);
}
gimp_preview_draw_buffer (preview, dest, width * bpp);
g_free (src);
g_free (dest);
}
static gboolean
mapcolor_dialog (GimpDrawable *drawable)
{
GtkWidget *dialog;
GtkWidget *main_vbox;
GtkWidget *preview;
GtkWidget *frame;
GtkWidget *table;
gint j;
gboolean run;
gimp_ui_init (PLUG_IN_BINARY, TRUE);
dialog = gimp_dialog_new (_("Map Color Range"), PLUG_IN_BINARY,
NULL, 0,
gimp_standard_help_func, COLOR_MAP_PROC,
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
GTK_STOCK_OK, GTK_RESPONSE_OK,
NULL);
gtk_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
GTK_RESPONSE_OK,
GTK_RESPONSE_CANCEL,
-1);
gimp_window_set_transient (GTK_WINDOW (dialog));
main_vbox = gtk_vbox_new (FALSE, 12);
gtk_container_set_border_width (GTK_CONTAINER (main_vbox), 12);
gtk_container_add (GTK_CONTAINER (GTK_DIALOG (dialog)->vbox), main_vbox);
gtk_widget_show (main_vbox);
preview = gimp_zoom_preview_new (drawable);
gtk_box_pack_start_defaults (GTK_BOX (main_vbox), preview);
gtk_widget_show (preview);
g_signal_connect_swapped (preview, "invalidated",
G_CALLBACK (update_img_preview),
drawable);
for (j = 0; j < 2; j++)
{
frame = gimp_frame_new ((j == 0) ?
_("Source Color Range") :
_("Destination Color Range"));
gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
/* The table keeps the color selections */
table = gtk_table_new (1, 4, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (table), 6);
gtk_container_add (GTK_CONTAINER (frame), table);
gtk_widget_show (table);
add_color_button (j * 2, 0, 0, table, preview);
add_color_button (j * 2 + 1, 2, 0, table, preview);
}
gtk_widget_show (dialog);
run = (gimp_dialog_run (GIMP_DIALOG (dialog)) == GTK_RESPONSE_OK);
if (run)
plvals.map_mode = 0; /* Currently always linear mapping */
gtk_widget_destroy (dialog);
return run;
}
static void
add_color_button (gint csel_index,
gint left,
gint top,
GtkWidget *table,
GtkWidget *preview)
{
GtkWidget *button;
button = gimp_color_button_new (gettext (csel_title[csel_index]),
PRV_WIDTH, PRV_HEIGHT,
&plvals.colors[csel_index],
GIMP_COLOR_AREA_FLAT);
gimp_table_attach_aligned (GTK_TABLE (table), left + 1, top,
(left == 0) ? _("From:") : _("To:"),
0.0, 0.5,
button, 1, TRUE);
g_signal_connect (button, "color-changed",
G_CALLBACK (gimp_color_button_get_color),
&plvals.colors[csel_index]);
g_signal_connect_swapped (button, "color-changed",
G_CALLBACK (gimp_preview_invalidate),
preview);
}
static void
get_mapping (GimpRGB *src_col1,
GimpRGB *src_col2,
GimpRGB *dst_col1,
GimpRGB *dst_col2,
gint32 map_mode,
guchar *redmap,
guchar *greenmap,
guchar *bluemap)
{
guchar src1[3];
guchar src2[3];
guchar dst1[3];
guchar dst2[3];
gint rgb, i, a, as, b, bs;
guchar *colormap[3];
/* Currently we always do a linear mapping */
colormap[0] = redmap;
colormap[1] = greenmap;
colormap[2] = bluemap;
gimp_rgb_get_uchar (src_col1, src1, src1 + 1, src1 + 2);
gimp_rgb_get_uchar (src_col2, src2, src2 + 1, src2 + 2);
gimp_rgb_get_uchar (dst_col1, dst1, dst1 + 1, dst1 + 2);
gimp_rgb_get_uchar (dst_col2, dst2, dst2 + 1, dst2 + 2);
switch (map_mode)
{
case 0:
default:
for (rgb = 0; rgb < 3; rgb++)
{
a = src1[rgb]; as = dst1[rgb];
b = src2[rgb]; bs = dst2[rgb];
if (b == a)
b = a + 1;
for (i = 0; i < 256; i++)
{
gint j = ((i - a) * (bs - as)) / (b - a) + as;
colormap[rgb][i] = CLAMP0255(j);
}
}
break;
}
}
static void
mapcolor_func (const guchar *src,
guchar *dest,
gint bpp,
gpointer data)
{
dest[0] = redmap[src[0]];
dest[1] = greenmap[src[1]];
dest[2] = bluemap[src[2]];
if (bpp > 3)
dest[3] = src[3];
}
static void
color_mapping (GimpDrawable *drawable)
{
if (gimp_rgb_distance (&plvals.colors[0], &plvals.colors[1]) < 0.0001)
return;
if (!gimp_drawable_is_rgb (drawable->drawable_id))
{
g_message (_("Cannot operate on gray or indexed color images."));
return;
}
gimp_tile_cache_ntiles (2 * (drawable->width / gimp_tile_width () + 1));
get_mapping (plvals.colors,
plvals.colors + 1,
plvals.colors + 2,
plvals.colors + 3,
plvals.map_mode,
redmap, greenmap, bluemap);
gimp_rgn_iterate2 (drawable, 0 /* unused */, mapcolor_func, NULL);
}
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