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gimp/plug-ins/common/oilify.c

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/*
* This is a plug-in for the GIMP.
*
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
* Copyright (C) 1996 Torsten Martinsen
*
* 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.
*
* $Id$
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "gtk/gtk.h"
#include "libgimp/gimp.h"
#include "config.h"
#include "libgimp/stdplugins-intl.h"
#define ENTRY_WIDTH 30
#define SCALE_WIDTH 125
#define HISTSIZE 256
#define MODE_RGB 0
#define MODE_INTEN 1
#define INTENSITY(p) ((unsigned int) (p[0]*77+p[1]*150+p[2]*29) >> 8)
typedef struct {
gdouble mask_size;
gint mode;
} OilifyVals;
typedef struct {
gint run;
} OilifyInterface;
/* Declare local functions.
*/
static void query (void);
static void run (char *name,
int nparams,
GParam *param,
int *nreturn_vals,
GParam **return_vals);
static void oilify_rgb (GDrawable * drawable);
static void oilify_intensity (GDrawable * drawable);
static gint oilify_dialog ();
static void oilify_close_callback (GtkWidget *widget,
gpointer data);
static void oilify_ok_callback (GtkWidget *widget,
gpointer data);
static void oilify_scale_update (GtkAdjustment *adjustment,
double *scale_val);
static void oilify_entry_update (GtkWidget *widget,
gdouble *value);
static void dialog_create_value (char *title,
GtkTable *table,
int row,
gdouble *value,
double left,
double right);
static void oilify_toggle_update (GtkWidget *widget,
gpointer data);
GPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run, /* run_proc */
};
static OilifyVals ovals =
{
7.0, /* mask size */
0 /* mode */
};
static OilifyInterface oint =
{
FALSE /* run */
};
MAIN ()
static void
query ()
{
static GParamDef args[] =
{
{ PARAM_INT32, "run_mode", "Interactive, non-interactive" },
{ PARAM_IMAGE, "image", "Input image (unused)" },
{ PARAM_DRAWABLE, "drawable", "Input drawable" },
{ PARAM_INT32, "mask_size", "Oil paint mask size" },
{ PARAM_INT32, "mode", "Algorithm {RGB (0), INTENSITY (1)}" }
};
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_oilify",
_("Modify the specified drawable to resemble an oil painting"),
_("This function performs the well-known oil-paint effect on the specified drawable. The size of the input mask is specified by 'mask_size'."),
"Torsten Martinsen",
"Torsten Martinsen",
"1996",
_("<Image>/Filters/Artistic/Oilify"),
"RGB*, GRAY*",
PROC_PLUG_IN,
nargs, nreturn_vals,
args, return_vals);
}
static void
run (char *name,
int nparams,
GParam *param,
int *nreturn_vals,
GParam **return_vals)
{
static GParam values[1];
GDrawable *drawable;
GRunModeType run_mode;
GStatusType status = STATUS_SUCCESS;
INIT_I18N_UI();
run_mode = param[0].data.d_int32;
*nreturn_vals = 2;
*return_vals = values;
values[0].type = PARAM_STATUS;
values[0].data.d_status = status;
switch (run_mode)
{
case RUN_INTERACTIVE:
/* Possibly retrieve data */
gimp_get_data ("plug_in_oilify", &ovals);
/* First acquire information with a dialog */
if (! oilify_dialog ())
return;
break;
case RUN_NONINTERACTIVE:
/* Make sure all the arguments are there! */
if (nparams != 5)
status = STATUS_CALLING_ERROR;
if (status == STATUS_SUCCESS)
{
ovals.mask_size = (gdouble) param[3].data.d_int32;
ovals.mode = (gint) param[4].data.d_int32;
}
if (status == STATUS_SUCCESS &&
((ovals.mask_size < 1.0) ||
((ovals.mode != MODE_INTEN) && (ovals.mode != MODE_RGB))))
status = STATUS_CALLING_ERROR;
break;
case RUN_WITH_LAST_VALS:
/* Possibly retrieve data */
gimp_get_data ("plug_in_oilify", &ovals);
break;
default:
break;
}
/* Get the specified drawable */
drawable = gimp_drawable_get (param[2].data.d_drawable);
/* Make sure that the drawable is gray or RGB color */
if ((status == STATUS_SUCCESS) &&
(gimp_drawable_is_rgb (drawable->id) || gimp_drawable_is_gray (drawable->id)))
{
gimp_progress_init (_("Oil Painting..."));
gimp_tile_cache_ntiles (2 * (drawable->width / gimp_tile_width () + 1));
if (gimp_drawable_is_rgb (drawable->id) && (ovals.mode == MODE_INTEN))
oilify_intensity (drawable);
else
oilify_rgb (drawable);
if (run_mode != RUN_NONINTERACTIVE)
gimp_displays_flush ();
/* Store data */
if (run_mode == RUN_INTERACTIVE)
gimp_set_data ("plug_in_oilify", &ovals, sizeof (OilifyVals));
}
else
{
/* gimp_message ("oilify: cannot operate on indexed color images"); */
status = STATUS_EXECUTION_ERROR;
}
values[0].data.d_status = status;
gimp_drawable_detach (drawable);
}
/*
* For each RGB channel, replace the pixel at (x,y) with the
* value that occurs most often in the n x n chunk centered
* at (x,y).
*/
static void
oilify_rgb (GDrawable *drawable)
{
GPixelRgn src_rgn, dest_rgn;
gint bytes;
gint width, height;
guchar *src_row, *src;
guchar *dest_row, *dest;
gint x, y, c, b, xx, yy, n;
gint x1, y1, x2, y2;
gint x3, y3, x4, y4;
gint Val[4];
gint Cnt[4];
gint Hist[4][HISTSIZE];
gpointer pr1, pr2;
gint progress, max_progress;
gint *tmp1, *tmp2;
guchar *guc_tmp1;
/* get the selection bounds */
gimp_drawable_mask_bounds (drawable->id, &x1, &y1, &x2, &y2);
progress = 0;
max_progress = (x2 - x1) * (y2 - y1);
width = drawable->width;
height = drawable->height;
bytes = drawable->bpp;
n = (int) ovals.mask_size / 2;
gimp_pixel_rgn_init (&dest_rgn, drawable, x1, y1, (x2 - x1), (y2 - y1), TRUE, TRUE);
for (pr1 = gimp_pixel_rgns_register (1, &dest_rgn); pr1 != NULL; pr1 = gimp_pixel_rgns_process (pr1))
{
dest_row = dest_rgn.data;
for (y = dest_rgn.y; y < (dest_rgn.y + dest_rgn.h); y++)
{
dest = dest_row;
for (x = dest_rgn.x; x < (dest_rgn.x + dest_rgn.w); x++)
{
memset(Cnt, 0, sizeof(Cnt));
memset(Val, 0, sizeof(Val));
memset(Hist, 0, sizeof(Hist));
x3 = CLAMP ((x - n), x1, x2);
y3 = CLAMP ((y - n), y1, y2);
x4 = CLAMP ((x + n + 1), x1, x2);
y4 = CLAMP ((y + n + 1), y1, y2);
gimp_pixel_rgn_init (&src_rgn, drawable, x3, y3, (x4 - x3), (y4 - y3), FALSE, FALSE);
for (pr2 = gimp_pixel_rgns_register (1, &src_rgn); pr2 != NULL; pr2 = gimp_pixel_rgns_process (pr2))
{
src_row = src_rgn.data;
for (yy = 0; yy < src_rgn.h; yy++)
{
src = src_row;
for (xx = 0; xx < src_rgn.w; xx++)
{
for (b = 0,
tmp1 = Val,
tmp2 = Cnt,
guc_tmp1 = src;
b < bytes;
b++, tmp1++, tmp2++, guc_tmp1++)
{
if ((c = ++Hist[b][*guc_tmp1]) > *tmp2)
{
*tmp1 = *guc_tmp1;
*tmp2 = c;
}
}
src += src_rgn.bpp;
}
src_row += src_rgn.rowstride;
}
}
for (b = 0, tmp1 = Val; b < bytes; b++)
*dest++ = *tmp1++;
}
dest_row += dest_rgn.rowstride;
}
progress += dest_rgn.w * dest_rgn.h;
gimp_progress_update ((double) progress / (double) max_progress);
}
/* update the oil-painted region */
gimp_drawable_flush (drawable);
gimp_drawable_merge_shadow (drawable->id, TRUE);
gimp_drawable_update (drawable->id, x1, y1, (x2 - x1), (y2 - y1));
}
/*
* For each RGB channel, replace the pixel at (x,y) with the
* value that occurs most often in the n x n chunk centered
* at (x,y). Histogram is based on intensity.
*/
static void
oilify_intensity (GDrawable *drawable)
{
GPixelRgn src_rgn, dest_rgn;
gint bytes;
gint width, height;
guchar *src_row, *src;
guchar *dest_row, *dest;
gint x, y, c, b, xx, yy, n;
gint x1, y1, x2, y2;
gint x3, y3, x4, y4;
gint Val[4];
gint Cnt;
gint Hist[HISTSIZE];
gpointer pr1, pr2;
gint progress, max_progress;
gint *tmp1;
guchar *guc_tmp1;
/* get the selection bounds */
gimp_drawable_mask_bounds (drawable->id, &x1, &y1, &x2, &y2);
progress = 0;
max_progress = (x2 - x1) * (y2 - y1);
width = drawable->width;
height = drawable->height;
bytes = drawable->bpp;
n = (int) ovals.mask_size / 2;
gimp_pixel_rgn_init (&dest_rgn, drawable, x1, y1, (x2 - x1), (y2 - y1), TRUE, TRUE);
for (pr1 = gimp_pixel_rgns_register (1, &dest_rgn); pr1 != NULL; pr1 = gimp_pixel_rgns_process (pr1))
{
dest_row = dest_rgn.data;
for (y = dest_rgn.y; y < (dest_rgn.y + dest_rgn.h); y++)
{
dest = dest_row;
for (x = dest_rgn.x; x < (dest_rgn.x + dest_rgn.w); x++)
{
Cnt = 0;
memset(Val, 0, sizeof(Val));
memset(Hist, 0, sizeof(Hist));
x3 = CLAMP ((x - n), x1, x2);
y3 = CLAMP ((y - n), y1, y2);
x4 = CLAMP ((x + n + 1), x1, x2);
y4 = CLAMP ((y + n + 1), y1, y2);
gimp_pixel_rgn_init (&src_rgn, drawable, x3, y3, (x4 - x3), (y4 - y3), FALSE, FALSE);
for (pr2 = gimp_pixel_rgns_register (1, &src_rgn); pr2 != NULL; pr2 = gimp_pixel_rgns_process (pr2))
{
src_row = src_rgn.data;
for (yy = 0; yy < src_rgn.h; yy++)
{
src = src_row;
for (xx = 0; xx < src_rgn.w; xx++)
{
if ((c = ++Hist[INTENSITY(src)]) > Cnt)
{
Cnt = c;
for (b = 0,
tmp1 = Val,
guc_tmp1 = src;
b < bytes;
b++, tmp1++, guc_tmp1++)
*tmp1 = *guc_tmp1;
}
src += src_rgn.bpp;
}
src_row += src_rgn.rowstride;
}
}
for (b = 0, tmp1 = Val; b < bytes; b++)
*dest++ = *tmp1++;
}
dest_row += dest_rgn.rowstride;
}
progress += dest_rgn.w * dest_rgn.h;
if ((progress % 5) == 0)
gimp_progress_update ((double) progress / (double) max_progress);
}
/* update the oil-painted region */
gimp_drawable_flush (drawable);
gimp_drawable_merge_shadow (drawable->id, TRUE);
gimp_drawable_update (drawable->id, x1, y1, (x2 - x1), (y2 - y1));
}
static gint
oilify_dialog ()
{
GtkWidget *dlg;
GtkWidget *button;
GtkWidget *frame;
GtkWidget *table;
GtkWidget *toggle;
gchar **argv;
gint argc;
argc = 1;
argv = g_new (gchar *, 1);
argv[0] = g_strdup ("oilify");
gtk_init (&argc, &argv);
gtk_rc_parse (gimp_gtkrc ());
dlg = gtk_dialog_new ();
gtk_window_set_title (GTK_WINDOW (dlg), _("Oilify"));
gtk_window_position (GTK_WINDOW (dlg), GTK_WIN_POS_MOUSE);
gtk_signal_connect (GTK_OBJECT (dlg), "destroy",
(GtkSignalFunc) oilify_close_callback,
NULL);
/* Action area */
button = gtk_button_new_with_label (_("OK"));
GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
gtk_signal_connect (GTK_OBJECT (button), "clicked",
(GtkSignalFunc) oilify_ok_callback,
dlg);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dlg)->action_area), button, TRUE, TRUE, 0);
gtk_widget_grab_default (button);
gtk_widget_show (button);
button = gtk_button_new_with_label (_("Cancel"));
GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
gtk_signal_connect_object (GTK_OBJECT (button), "clicked",
(GtkSignalFunc) gtk_widget_destroy,
GTK_OBJECT (dlg));
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dlg)->action_area), button, TRUE, TRUE, 0);
gtk_widget_show (button);
/* parameter settings */
frame = gtk_frame_new (_("Parameter Settings"));
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
gtk_container_border_width (GTK_CONTAINER (frame), 10);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dlg)->vbox), frame, TRUE, TRUE, 0);
table = gtk_table_new (2, 3, FALSE);
gtk_container_border_width (GTK_CONTAINER (table), 10);
gtk_container_add (GTK_CONTAINER (frame), table);
toggle = gtk_check_button_new_with_label (_("Use intensity algorithm"));
gtk_table_attach (GTK_TABLE (table), toggle, 0, 2, 0, 1, GTK_FILL, 0, 0, 0);
gtk_signal_connect (GTK_OBJECT (toggle), "toggled",
(GtkSignalFunc) oilify_toggle_update,
&ovals.mode);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), ovals.mode);
gtk_widget_show (toggle);
dialog_create_value(_("Mask Size"), GTK_TABLE(table), 1, &ovals.mask_size, 3.0, 50.0);
gtk_widget_show (frame);
gtk_widget_show (table);
gtk_widget_show (dlg);
gtk_main ();
gdk_flush ();
return oint.run;
}
/* Oilify interface functions */
static void
oilify_close_callback (GtkWidget *widget,
gpointer data)
{
gtk_main_quit ();
}
static void
oilify_ok_callback (GtkWidget *widget,
gpointer data)
{
oint.run = TRUE;
gtk_widget_destroy (GTK_WIDGET (data));
}
/*
* Thanks to Quartic for these.
*/
static void
dialog_create_value(char *title, GtkTable *table, int row, gdouble *value, double left, double right)
{
GtkWidget *label;
GtkWidget *scale;
GtkWidget *entry;
GtkObject *scale_data;
char buf[256];
label = gtk_label_new(title);
gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.5);
gtk_table_attach(table, label, 0, 1, row, row + 1, GTK_FILL, GTK_FILL, 4, 0);
gtk_widget_show(label);
scale_data = gtk_adjustment_new(*value, left, right, 1.0, 5.0, 5.0);
gtk_signal_connect(GTK_OBJECT(scale_data), "value_changed",
(GtkSignalFunc) oilify_scale_update,
value);
scale = gtk_hscale_new(GTK_ADJUSTMENT(scale_data));
gtk_widget_set_usize(scale, SCALE_WIDTH, 0);
gtk_table_attach(table, scale, 1, 2, row, row + 1, GTK_EXPAND | GTK_FILL, GTK_FILL, 0, 0);
gtk_scale_set_draw_value(GTK_SCALE(scale), FALSE);
gtk_scale_set_digits(GTK_SCALE(scale), 3);
gtk_range_set_update_policy(GTK_RANGE(scale), GTK_UPDATE_CONTINUOUS);
gtk_widget_show(scale);
entry = gtk_entry_new();
gtk_object_set_user_data(GTK_OBJECT(entry), scale_data);
gtk_object_set_user_data(scale_data, entry);
gtk_widget_set_usize(entry, ENTRY_WIDTH, 0);
sprintf(buf, "%.0f", *value);
gtk_entry_set_text(GTK_ENTRY(entry), buf);
gtk_signal_connect(GTK_OBJECT(entry), "changed",
(GtkSignalFunc) oilify_entry_update,
value);
gtk_table_attach(GTK_TABLE(table), entry, 2, 3, row, row + 1, GTK_FILL, GTK_FILL, 4, 0);
gtk_widget_show(entry);
}
static void
oilify_entry_update(GtkWidget *widget, gdouble *value)
{
GtkAdjustment *adjustment;
gdouble new_value;
new_value = atof(gtk_entry_get_text(GTK_ENTRY(widget)));
if (*value != new_value) {
adjustment = gtk_object_get_user_data(GTK_OBJECT(widget));
if ((new_value >= adjustment->lower) &&
(new_value <= adjustment->upper)) {
*value = new_value;
adjustment->value = new_value;
gtk_signal_emit_by_name(GTK_OBJECT(adjustment), "value_changed");
} /* if */
} /* if */
}
static void
oilify_scale_update (GtkAdjustment *adjustment, gdouble *value)
{
GtkWidget *entry;
char buf[256];
if (*value != adjustment->value) {
adjustment->value = (int) adjustment->value | 1;
*value = adjustment->value;
entry = gtk_object_get_user_data(GTK_OBJECT(adjustment));
sprintf(buf, "%.0f", *value);
gtk_signal_handler_block_by_data(GTK_OBJECT(entry), value);
gtk_entry_set_text(GTK_ENTRY(entry), buf);
gtk_signal_handler_unblock_by_data(GTK_OBJECT(entry), value);
} /* if */
}
static void
oilify_toggle_update (GtkWidget *widget,
gpointer data)
{
int *toggle_val;
toggle_val = (int *) data;
if (GTK_TOGGLE_BUTTON (widget)->active)
*toggle_val = MODE_INTEN;
else
*toggle_val = MODE_RGB;
}
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