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gimp/plug-ins/common/colorify.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* Colorify. Changes the pixel's luminosity to a specified color
* Copyright (C) 1997 Francisco Bustamante
*
* 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.
*/
/* Changes:
1.1
-Corrected small bug when calling color selection dialog
-Added LUTs to speed things a little bit up
1.0
-First release */
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <gtk/gtk.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "libgimp/stdplugins-intl.h"
#define PLUG_IN_NAME "plug_in_colorify"
#define PLUG_IN_VERSION "1.1"
static void query (void);
static void run (gchar *name,
gint nparams,
GParam *param,
gint *nreturn_vals,
GParam **return_vals);
static void colorify (GDrawable *drawable);
static void colorify_row (guchar *row,
gint width,
gint bpp);
static gint colorify_dialog (guchar red,
guchar green,
guchar blue);
static void colorify_ok_callback (GtkWidget *widget,
gpointer data);
static void custom_color_callback (GtkWidget *widget,
gpointer data);
static void predefined_color_callback (GtkWidget *widget,
gpointer data);
static void color_changed (GtkWidget *widget,
gpointer data);
static void set_preview_color (GtkWidget *preview,
guchar red,
guchar green,
guchar blue);
typedef struct
{
guchar color[3];
} ColorifyVals;
typedef struct
{
gint run;
} ColorifyInterface;
typedef struct
{
guchar red;
guchar green;
guchar blue;
GtkWidget *preview;
gint button_num;
} ButtonInformation;
static ColorifyInterface cint =
{
FALSE
};
static ColorifyVals cvals =
{
{ 255, 255, 255 }
};
static ButtonInformation button_info[] =
{
{ 255, 0, 0, NULL, 0 },
{ 255, 255, 0, NULL, 0 },
{ 0, 255, 0, NULL, 0 },
{ 0, 255, 255, NULL, 0 },
{ 0, 0, 255, NULL, 0 },
{ 255, 0, 255, NULL, 0 },
{ 255, 255, 255, NULL, 0 },
};
GPlugInInfo PLUG_IN_INFO =
{
NULL,
NULL,
query,
run,
};
gint lum_red_lookup[256], lum_green_lookup[256], lum_blue_lookup[256];
gint final_red_lookup[256], final_green_lookup[256], final_blue_lookup[256];
MAIN ()
static void
query (void)
{
static GParamDef args[] =
{
{ PARAM_INT32, "run_mode", "Interactive, non-interactive" },
{ PARAM_IMAGE, "image", "Input image" },
{ PARAM_DRAWABLE, "drawable", "Input drawable" },
{ PARAM_COLOR, "color", "Color to apply"},
};
static GParamDef *return_vals = NULL;
static int nargs = sizeof(args) / sizeof(args[0]);
static int nreturn_vals = 0;
INIT_I18N();
gimp_install_procedure ("plug_in_colorify",
_("Similar to the \"Color\" mode for layers."),
_("Makes an average of the RGB channels and uses it to set the color"),
"Francisco Bustamante",
"Francisco Bustamante",
"0.0.1",
N_("<Image>/Filters/Colors/Colorify..."),
"RGB*",
PROC_PLUG_IN,
nargs, nreturn_vals,
args, return_vals);
}
gint sel_x1, sel_x2, sel_y1, sel_y2, sel_width, sel_height;
GtkWidget *preview;
GtkWidget *c_dialog;
static void
run (gchar *name,
gint nparams,
GParam *param,
gint *nreturn_vals,
GParam **return_vals)
{
GRunModeType run_mode;
GStatusType status;
static GParam values[1];
GDrawable *drawable;
INIT_I18N_UI();
status = STATUS_SUCCESS;
run_mode = param[0].data.d_int32;
values[0].type = PARAM_STATUS;
values[0].data.d_status = status;
*nreturn_vals = 1;
*return_vals = values;
drawable = gimp_drawable_get (param[2].data.d_drawable);
gimp_drawable_mask_bounds (drawable->id, &sel_x1, &sel_y1, &sel_x2, &sel_y2);
sel_width = sel_x2 - sel_x1;
sel_height = sel_y2 - sel_y1;
switch (run_mode)
{
case RUN_INTERACTIVE:
gimp_get_data (PLUG_IN_NAME, &cvals);
if (!colorify_dialog (cvals.color[0], cvals.color[1], cvals.color[2]))
return;
break;
case RUN_NONINTERACTIVE:
if (nparams != 4)
status = STATUS_CALLING_ERROR;
if (status == STATUS_SUCCESS)
{
cvals.color[0] = param[3].data.d_color.red;
cvals.color[1] = param[3].data.d_color.green;
cvals.color[2] = param[3].data.d_color.blue;
}
break;
case RUN_WITH_LAST_VALS:
/* Possibly retrieve data */
gimp_get_data (PLUG_IN_NAME, &cvals);
break;
default:
break;
}
if (status == STATUS_SUCCESS)
{
gimp_progress_init (_("Colorifying..."));
colorify (drawable);
if (run_mode == RUN_INTERACTIVE)
gimp_set_data (PLUG_IN_NAME, &cvals, sizeof (ColorifyVals));
if (run_mode != RUN_NONINTERACTIVE)
{
gimp_displays_flush ();
}
}
values[0].data.d_status = status;
}
static void
colorify (GDrawable *drawable)
{
GPixelRgn source_region, dest_region;
guchar *row;
gint bpp;
gint y = 0;
gint progress = 0;
gint i = 0;
for (i = 0; i < 256; i ++)
{
lum_red_lookup[i] = i * 0.30;
lum_green_lookup[i] = i * 0.59;
lum_blue_lookup[i] = i * 0.11;
final_red_lookup[i] = i * cvals.color[0] / 255;
final_green_lookup[i] = i * cvals.color[1] / 255;
final_blue_lookup[i] = i * cvals.color[2] / 255;
}
bpp = gimp_drawable_bpp (drawable->id);
row = g_new (guchar, sel_width * bpp);
gimp_pixel_rgn_init (&source_region, drawable,
sel_x1, sel_y1, sel_width, sel_height, FALSE, FALSE);
gimp_pixel_rgn_init (&dest_region, drawable,
sel_x1, sel_y1, sel_width, sel_height, TRUE, TRUE);
for (y = sel_y1; y < sel_y2; y++)
{
gimp_pixel_rgn_get_row (&source_region, row, sel_x1, y, sel_width);
colorify_row (row, sel_width, bpp);
gimp_pixel_rgn_set_row (&dest_region, row, sel_x1, y, sel_width);
gimp_progress_update ((double) ++progress / sel_height);
}
g_free (row);
gimp_drawable_flush (drawable);
gimp_drawable_merge_shadow (drawable->id, TRUE);
gimp_drawable_update (drawable->id, sel_x1, sel_y1, sel_width, sel_height);
}
static void
colorify_row (guchar *row,
gint width,
gint bpp)
{
gint cur_x;
gint lum; /* luminosity */
guchar *current = row;
for (cur_x = 0; cur_x < width; cur_x++)
{
lum = (lum_red_lookup[current[0]] +
lum_green_lookup[current[1]] +
lum_blue_lookup[current[2]]);
current[0] = final_red_lookup[lum];
current[1] = final_green_lookup[lum];
current[2] = final_blue_lookup[lum];
current += bpp;
}
}
static int
colorify_dialog (guchar red,
guchar green,
guchar blue)
{
GtkWidget *dialog;
GtkWidget *label;
GtkWidget *button;
GtkWidget *frame;
GtkWidget *table;
gchar **argv;
gint argc;
gint i;
GSList *group = NULL;
argc = 1;
argv = g_new (gchar *, 1);
argv[0] = g_strdup ("colorify");
gtk_init (&argc, &argv);
gtk_rc_parse (gimp_gtkrc());
dialog = gimp_dialog_new (_("Colorify"), "colorify",
gimp_plugin_help_func, "filters/colorify.html",
GTK_WIN_POS_MOUSE,
FALSE, TRUE, FALSE,
_("OK"), colorify_ok_callback,
NULL, NULL, NULL, TRUE, FALSE,
_("Cancel"), gtk_widget_destroy,
NULL, 1, NULL, FALSE, TRUE,
NULL);
gtk_signal_connect (GTK_OBJECT (dialog), "destroy",
GTK_SIGNAL_FUNC (gtk_main_quit),
NULL);
frame = gtk_frame_new (_("Color"));
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
gtk_container_set_border_width (GTK_CONTAINER (frame), 6);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dialog)->vbox), frame, TRUE, TRUE, 0);
gtk_widget_show (frame);
table = gtk_table_new (2, 7, TRUE);
gtk_container_set_border_width (GTK_CONTAINER (table), 4);
gtk_container_add (GTK_CONTAINER (frame), table);
gtk_table_set_row_spacings (GTK_TABLE (table), 4);
gtk_table_set_col_spacings (GTK_TABLE (table), 4);
gtk_widget_show (table);
label = gtk_label_new (_("Custom Color:"));
gtk_table_attach (GTK_TABLE (table), label, 4, 6, 0, 1,
GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (label);
button = gtk_radio_button_new (group);
gtk_toggle_button_set_mode (GTK_TOGGLE_BUTTON (button), FALSE);
gtk_widget_set_usize (button, 35, 35);
gtk_signal_connect (GTK_OBJECT (button), "button_press_event",
(GtkSignalFunc) custom_color_callback,
NULL);
gtk_table_attach (GTK_TABLE (table), button, 6, 7, 0, 1,
GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (button);
preview = gtk_preview_new (GTK_PREVIEW_COLOR);
gtk_preview_size (GTK_PREVIEW (preview), 30, 30);
set_preview_color (preview, cvals.color[0], cvals.color[1], cvals.color[2]);
gtk_container_add (GTK_CONTAINER (button), preview);
gtk_widget_show (preview);
for (i = 0; i < 7; i++)
{
group = gtk_radio_button_group (GTK_RADIO_BUTTON (button));
button = gtk_radio_button_new (group);
gtk_toggle_button_set_mode (GTK_TOGGLE_BUTTON (button), FALSE);
button_info[i].preview = gtk_preview_new (GTK_PREVIEW_COLOR);
gtk_preview_size (GTK_PREVIEW (button_info[i].preview),
30, 30);
gtk_container_add (GTK_CONTAINER (button), button_info[i].preview);
set_preview_color (button_info[i].preview,
button_info[i].red,
button_info[i].green,
button_info[i].blue);
button_info[i].button_num = i;
gtk_signal_connect (GTK_OBJECT (button), "clicked",
(GtkSignalFunc) predefined_color_callback,
&button_info[i].button_num);
gtk_widget_show (button_info[i].preview);
gtk_table_attach (GTK_TABLE (table), button, i, i + 1, 1, 2,
GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (button);
}
gtk_widget_show (dialog);
gtk_main ();
gdk_flush ();
return cint.run;
}
static void
colorify_ok_callback (GtkWidget *widget,
gpointer data)
{
cint.run = TRUE;
gtk_widget_destroy (GTK_WIDGET (data));
}
static void
set_preview_color (GtkWidget *preview,
guchar red,
guchar green,
guchar blue)
{
gint i;
guchar buf[3 * 30];
for (i = 0; i < 30; i ++)
{
buf [3 * i] = red;
buf [3 * i + 1] = green;
buf [3 * i + 2] = blue;
}
for (i = 0; i < 30; i ++)
gtk_preview_draw_row (GTK_PREVIEW (preview), buf, 0, i, 30);
gtk_widget_draw (preview, NULL);
}
static void
custom_color_callback (GtkWidget *widget,
gpointer data)
{
GtkColorSelectionDialog *csd;
gdouble colour[3];
c_dialog = gtk_color_selection_dialog_new (_("Colorify Custom Color"));
csd = GTK_COLOR_SELECTION_DIALOG (c_dialog);
gtk_color_selection_set_update_policy (GTK_COLOR_SELECTION(csd->colorsel),
GTK_UPDATE_DISCONTINUOUS);
gtk_widget_destroy (csd->help_button);
gtk_widget_destroy (csd->cancel_button);
gtk_signal_connect (GTK_OBJECT (csd->ok_button), "clicked",
(GtkSignalFunc) color_changed,
NULL);
colour[0] = cvals.color[0] / 255.0;
colour[1] = cvals.color[1] / 255.0;
colour[2] = cvals.color[2] / 255.0;
gtk_color_selection_set_color (GTK_COLOR_SELECTION (csd->colorsel),
colour);
gtk_window_set_position (GTK_WINDOW (c_dialog), GTK_WIN_POS_MOUSE);
gtk_widget_show (c_dialog);
}
static void
predefined_color_callback (GtkWidget *widget,
gpointer data)
{
gint *num;
num = (gint *) data;
cvals.color[0] = button_info[*num].red;
cvals.color[1] = button_info[*num].green;
cvals.color[2] = button_info[*num].blue;
}
static void
color_changed (GtkWidget *widget,
gpointer data)
{
gdouble color[3];
gtk_color_selection_get_color (GTK_COLOR_SELECTION (GTK_COLOR_SELECTION_DIALOG (c_dialog)->colorsel),
color);
cvals.color[0] = (guchar) (color[0] * 255.0);
cvals.color[1] = (guchar) (color[1] * 255.0);
cvals.color[2] = (guchar) (color[2] * 255.0);
set_preview_color (preview, cvals.color[0], cvals.color[1], cvals.color[2]);
gtk_widget_destroy (c_dialog);
}
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