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gimp/plug-ins/common/wind.c

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/*
* wind 1.1.0 - a plug-in for GIMP
*
* Copyright (C) Nigel Wetten
*
* 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.
*
* Contact info: nigel@cs.nwu.edu
* Version: 1.0.0
*
* Version: 1.1.0
* May 2000 tim copperfield [timecop@japan.co.jp]
*
* Added dynamic preview.
*
*/
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "libgimp/stdplugins-intl.h"
#define PLUG_IN_PROC "plug-in-wind"
#define PLUG_IN_BINARY "wind"
#define COMPARE_WIDTH 3
#define SCALE_WIDTH 200
#define MIN_THRESHOLD 0
#define MAX_THRESHOLD 50
#define MIN_STRENGTH 1
#define MAX_STRENGTH 100
typedef enum
{
LEFT,
RIGHT
} direction_t;
typedef enum
{
RENDER_WIND,
RENDER_BLAST
} algorithm_t;
typedef enum
{
BOTH,
LEADING,
TRAILING
} edge_t;
static void query (void);
static void run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals);
static gint dialog_box (GimpDrawable *drawable);
static gint render_effect (GimpDrawable *drawable,
GimpPreview *preview);
static void render_wind (GimpDrawable *drawable,
gint threshold,
gint strength,
direction_t direction,
edge_t edge,
GimpPreview *preview);
static void render_blast (GimpDrawable *drawable,
gint threshold,
gint strength,
direction_t direction,
edge_t edge,
GimpPreview *preview);
static gint render_blast_row (guchar *buffer,
gint bytes,
gint lpi,
gint threshold,
gint strength,
edge_t edge);
static void render_wind_row (guchar *sb,
gint bytes,
gint lpi,
gint threshold,
gint strength,
edge_t edge);
static void get_derivative (guchar *pixel_R1,
guchar *pixel_R2,
edge_t edge,
gboolean has_alpha,
gint *derivative_R,
gint *derivative_G,
gint *derivative_B,
gint *derivative_A);
static gboolean threshold_exceeded (guchar *pixel_R1,
guchar *pixel_R2,
edge_t edge,
gint threshold,
gboolean has_alpha);
static void reverse_buffer (guchar *buffer,
gint length,
gint bytes);
const GimpPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run /* run_proc */
};
/*********************
Globals
*******************/
struct config_tag
{
gint threshold; /* derivative comparison for edge detection */
direction_t direction; /* of wind, LEFT or RIGHT */
gint strength; /* how many pixels to bleed */
algorithm_t alg; /* which algorithm */
edge_t edge; /* controls abs, negation of derivative */
};
typedef struct config_tag config_t;
config_t config =
{
10, /* threshold for derivative edge detection */
LEFT, /* bleed to the right */
10, /* how many pixels to bleed */
RENDER_WIND, /* default algorithm */
LEADING /* abs(derivative) */
};
MAIN ()
static void
query (void)
{
static const GimpParamDef args[] =
{
{ GIMP_PDB_INT32, "run-mode", "Interactive, non-interactive" },
{ GIMP_PDB_IMAGE, "image", "Input image (unused)" },
{ GIMP_PDB_DRAWABLE, "drawable", "Input drawable" },
{ GIMP_PDB_INT32, "threshold", "Controls where blending will be done >= 0" },
{ GIMP_PDB_INT32, "direction", "Left or Right: 0 or 1" },
{ GIMP_PDB_INT32, "strength", "Controls the extent of the blending > 1" },
{ GIMP_PDB_INT32, "algorithm", "WIND, BLAST" },
{ GIMP_PDB_INT32, "edge", "LEADING, TRAILING, or BOTH" }
};
gimp_install_procedure (PLUG_IN_PROC,
N_("Smear image to give windblown effect"),
"Renders a wind effect.",
"Nigel Wetten",
"Nigel Wetten",
"May 2000",
N_("Wi_nd..."),
"RGB*",
GIMP_PLUGIN,
G_N_ELEMENTS (args), 0,
args, NULL);
gimp_plugin_menu_register (PLUG_IN_PROC, "<Image>/Filters/Distorts");
}
static void
run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals)
{
static GimpParam values[1];
GimpDrawable *drawable;
GimpRunMode run_mode;
GimpPDBStatusType status = GIMP_PDB_SUCCESS;
run_mode = param[0].data.d_int32;
drawable = gimp_drawable_get (param[2].data.d_drawable);
gimp_tile_cache_ntiles (2 * (drawable->width / gimp_tile_width () + 1));
INIT_I18N ();
switch (run_mode)
{
case GIMP_RUN_NONINTERACTIVE:
if (nparams != 8)
{
status = GIMP_PDB_CALLING_ERROR;
}
else
{
config.threshold = param[3].data.d_int32;
config.direction = param[4].data.d_int32;
config.strength = param[5].data.d_int32;
config.alg = param[6].data.d_int32;
config.edge = param[7].data.d_int32;
if (render_effect (drawable, NULL) == -1)
status = GIMP_PDB_EXECUTION_ERROR;
}
break;
case GIMP_RUN_INTERACTIVE:
gimp_get_data (PLUG_IN_PROC, &config);
if (! dialog_box (drawable))
{
status = GIMP_PDB_CANCEL;
break;
}
if (render_effect(drawable, NULL) == -1)
{
status = GIMP_PDB_CALLING_ERROR;
break;
}
gimp_set_data (PLUG_IN_PROC, &config, sizeof (config_t));
gimp_displays_flush ();
break;
case GIMP_RUN_WITH_LAST_VALS:
gimp_get_data (PLUG_IN_PROC, &config);
if (render_effect (drawable, NULL) == -1)
{
status = GIMP_PDB_EXECUTION_ERROR;
gimp_message ("An execution error occurred.");
}
else
{
gimp_displays_flush ();
}
}
gimp_drawable_detach (drawable);
*nreturn_vals = 1;
*return_vals = values;
values[0].type = GIMP_PDB_STATUS;
values[0].data.d_status = status;
}
static gint
render_effect (GimpDrawable *drawable,
GimpPreview *preview)
{
if (config.alg == RENDER_WIND)
{
render_wind (drawable, config.threshold, config.strength,
config.direction, config.edge, preview);
}
else if (config.alg == RENDER_BLAST)
{
render_blast (drawable, config.threshold, config.strength,
config.direction, config.edge, preview);
}
return 0;
}
static void
render_blast (GimpDrawable *drawable,
gint threshold,
gint strength,
direction_t direction,
edge_t edge,
GimpPreview *preview)
{
gint x1, x2, y1, y2;
gint width;
gint height;
gint bytes = drawable->bpp;
guchar *buffer, *preview_buffer = NULL;
GimpPixelRgn src_region, dest_region;
gint row;
gint row_stride;
gint marker = 0;
gint lpi;
if (preview)
{
gimp_preview_get_position (preview, &x1, &y1);
gimp_preview_get_size (preview, &width, &height);
x2 = x1 + width;
y2 = y1 + height;
preview_buffer = g_new (guchar, width * height * bytes);
}
else
{
if (gimp_drawable_mask_intersect (drawable->drawable_id,
&x1, &y1, &x2, &y2))
{
gimp_progress_init (_("Rendering blast"));
width = x2 - x1;
height = y2 - y1;
gimp_pixel_rgn_init (&dest_region, drawable,
x1, y1, width, height, TRUE, TRUE);
}
else
return;
}
gimp_pixel_rgn_init (&src_region, drawable,
x1, y1, width, height, FALSE, FALSE);
row_stride = width * bytes;
lpi = row_stride - bytes;
buffer = g_new (guchar, row_stride);
for (row = y1; row < y2; row++)
{
gimp_pixel_rgn_get_row (&src_region, buffer, x1, row, width);
if (direction == RIGHT)
{
reverse_buffer (buffer, row_stride, bytes);
}
marker = render_blast_row (buffer, bytes, lpi, threshold, strength, edge);
if (direction == RIGHT)
{
reverse_buffer (buffer, row_stride, bytes);
}
if (preview)
{
memcpy (preview_buffer + (row - y1) * row_stride,
buffer,
row_stride);
}
else
{
gimp_pixel_rgn_set_row (&dest_region, buffer, x1, row, width);
gimp_progress_update ((double) (row - y1)/ (double) (height));
}
if (marker)
{
gint j, limit;
limit = 1 + g_random_int_range (0, 2);
for (j = 0; (j < limit) && (row < y2); j++)
{
row++;
if (row < y2)
{
gimp_pixel_rgn_get_row (&src_region,
buffer, x1, row, width);
if (preview)
{
memcpy (preview_buffer + (row - y1) * row_stride,
buffer,
row_stride);
}
else
{
gimp_pixel_rgn_set_row (&dest_region,
buffer, x1, row, width);
}
}
}
marker = 0;
}
}
g_free(buffer);
/* update the region */
if (preview)
{
gimp_preview_draw_buffer (preview, preview_buffer, width * bytes);
g_free (preview_buffer);
}
else
{
gimp_drawable_flush (drawable);
gimp_drawable_merge_shadow (drawable->drawable_id, TRUE);
gimp_drawable_update (drawable->drawable_id, x1, y1, width, height);
}
}
static void
render_wind (GimpDrawable *drawable,
gint threshold,
gint strength,
direction_t direction,
edge_t edge,
GimpPreview *preview)
{
GimpPixelRgn src_region, dest_region;
gint width;
gint height;
gint bytes;
gint row_stride;
gint comp_stride;
gint row;
guchar *sb, *preview_buffer = NULL;
gint lpi;
gint x1, y1, x2, y2;
bytes = drawable->bpp;
if (preview)
{
gimp_preview_get_position (preview, &x1, &y1);
gimp_preview_get_size (preview, &width, &height);
x2 = x1 + width;
y2 = y1 + height;
preview_buffer = g_new (guchar, width * height * bytes);
}
else
{
if (gimp_drawable_mask_intersect (drawable->drawable_id, &x1, &y1, &x2, &y2))
{
gimp_progress_init (_("Rendering wind"));
width = x2 - x1;
height = y2 - y1;
gimp_pixel_rgn_init (&dest_region, drawable,
x1, y1, width, height, TRUE, TRUE);
}
else
return;
}
gimp_pixel_rgn_init (&src_region, drawable,
x1, y1, width, height, FALSE, FALSE);
row_stride = width * bytes;
comp_stride = bytes * COMPARE_WIDTH;
lpi = row_stride - comp_stride;
sb = g_new (guchar, row_stride);
for (row = y1; row < y2; row++)
{
gimp_pixel_rgn_get_row (&src_region, sb, x1, row, width);
if (direction == RIGHT)
reverse_buffer (sb, row_stride, bytes);
render_wind_row (sb, bytes, lpi, threshold, strength, edge);
if (direction == RIGHT)
reverse_buffer(sb, row_stride, bytes);
if (preview)
{
memcpy (preview_buffer + (row - y1) * row_stride, sb, row_stride);
}
else
{
gimp_pixel_rgn_set_row (&dest_region, sb, x1, row, width);
gimp_progress_update ((double) (row - y1)/ (double) (height));
}
}
g_free(sb);
/* update the region */
if (preview)
{
gimp_preview_draw_buffer (preview, preview_buffer, width * bytes);
g_free (preview_buffer);
}
else
{
gimp_drawable_flush (drawable);
gimp_drawable_merge_shadow (drawable->drawable_id, TRUE);
gimp_drawable_update (drawable->drawable_id, x1, y1, width, height);
}
}
static gint
render_blast_row (guchar *buffer,
gint bytes,
gint lpi,
gint threshold,
gint strength,
edge_t edge)
{
gint Ri, Gi, Bi, Ai = 0;
gint sbi, lbi;
gint bleed_length;
gint i, j;
gint weight, random_factor;
gint skip = 0;
for (j = 0; j < lpi; j += bytes)
{
Ri = j; Gi = j + 1; Bi = j + 2;
if (bytes > 3)
Ai = j + 3;
if (threshold_exceeded (buffer + Ri,
buffer + Ri + bytes,
edge,
threshold,
bytes > 3))
{
/* we have found an edge, do bleeding */
sbi = Ri;
weight = g_random_int_range (0, 10);
if (weight > 5) /* 40% */
{
random_factor = 2;
}
else if (weight > 3) /* 20% */
{
random_factor = 3;
}
else /* 40% */
{
random_factor = 4;
}
bleed_length = 0;
switch (g_random_int_range (0, random_factor))
{
case 3:
bleed_length += strength;
/* fall through to add up multiples of strength */
case 2:
bleed_length += strength;
/* fall through */
case 1:
bleed_length += strength;
/* fall through */
case 0:
bleed_length += strength;
/* fall through */
}
lbi = sbi + bytes * bleed_length;
if (lbi > lpi)
{
lbi = lpi;
}
for (i = sbi; i < lbi; i += bytes)
{
buffer[i] = buffer[Ri];
buffer[i+1] = buffer[Gi];
buffer[i+2] = buffer[Bi];
if (bytes > 3)
buffer[i+3] = buffer[Ai];
}
j = lbi - bytes;
if (g_random_int_range (0, 10) > 7) /* 20% */
{
skip = 1;
}
}
}
return skip;
}
static void
render_wind_row (guchar *sb,
gint bytes,
gint lpi,
gint threshold,
gint strength,
edge_t edge)
{
gint i, j;
gint bleed_length;
gint blend_amt_R, blend_amt_G, blend_amt_B, blend_amt_A = 0 ;
gint blend_colour_R, blend_colour_G, blend_colour_B, blend_colour_A = 0 ;
gint target_colour_R, target_colour_G, target_colour_B, target_colour_A = 0;
gdouble bleed_length_max;
gint bleed_variation;
gint n;
gint sbi; /* starting bleed index */
gint lbi; /* last bleed index */
gdouble denominator;
gint comp_stride = bytes * COMPARE_WIDTH;
for (j = 0; j < lpi; j += bytes)
{
gint Ri = j;
gint Gi = j + 1;
gint Bi = j + 2;
gint Ai = 0;
if (bytes > 3)
Ai = j + 3;
if (threshold_exceeded (sb + Ri,
sb + Ri + comp_stride,
edge,
threshold,
(bytes > 3)))
{
/* we have found an edge, do bleeding */
sbi = Ri + comp_stride;
blend_colour_R = sb[Ri];
blend_colour_G = sb[Gi];
blend_colour_B = sb[Bi];
target_colour_R = sb[sbi];
target_colour_G = sb[sbi+1];
target_colour_B = sb[sbi+2];
bleed_length_max = strength;
if (bytes > 3)
{
blend_colour_A = sb[Ai];
target_colour_A = sb[sbi+3];
}
if (g_random_int_range (0, 3)) /* introduce weighted randomness */
{
bleed_length_max = strength;
}
else
{
bleed_length_max = 4 * strength;
}
bleed_variation = 1 + (gint) (bleed_length_max * g_random_double ());
lbi = sbi + bleed_variation * bytes;
if (lbi > lpi)
{
lbi = lpi; /* stop overunning the buffer */
}
bleed_length = bleed_variation;
blend_amt_R = target_colour_R - blend_colour_R;
blend_amt_G = target_colour_G - blend_colour_G;
blend_amt_B = target_colour_B - blend_colour_B;
if (bytes > 3)
{
blend_amt_A = target_colour_A - blend_colour_A;
}
denominator = bleed_length * bleed_length + bleed_length;
denominator = 2.0 / denominator;
n = bleed_length;
for (i = sbi; i < lbi; i += bytes)
{
/* check against original colour */
if (!threshold_exceeded (sb + Ri,
sb + i,
edge,
threshold,
bytes > 3)
&& g_random_boolean ())
{
break;
}
blend_colour_R += blend_amt_R * n * denominator;
blend_colour_G += blend_amt_G * n * denominator;
blend_colour_B += blend_amt_B * n * denominator;
if (bytes > 3)
{
blend_colour_A += blend_amt_A * n * denominator;
if (blend_colour_A > 255)
blend_colour_A = 255;
else if (blend_colour_A < 0)
blend_colour_A = 0;
}
if (blend_colour_R > 255)
blend_colour_R = 255;
else if (blend_colour_R < 0)
blend_colour_R = 0;
if (blend_colour_G > 255)
blend_colour_G = 255;
else if (blend_colour_G < 0)
blend_colour_G = 0;
if (blend_colour_B > 255)
blend_colour_B = 255;
else if (blend_colour_B < 0)
blend_colour_B = 0;
sb[i + 0] = (blend_colour_R * 2 + sb[i + 0]) / 3;
sb[i + 1] = (blend_colour_G * 2 + sb[i + 1]) / 3;
sb[i + 2] = (blend_colour_B * 2 + sb[i + 2]) / 3;
if (bytes > 3)
sb[i + 3] = (blend_colour_A * 2 + sb[i + 3]) / 3;
if (threshold_exceeded (sb + i,
sb + i + comp_stride,
BOTH,
threshold,
bytes > 3))
{
target_colour_R = sb[i + comp_stride + 0];
target_colour_G = sb[i + comp_stride + 1];
target_colour_B = sb[i + comp_stride + 2];
if (bytes > 3)
target_colour_A = sb[i + comp_stride + 3];
blend_amt_R = target_colour_R - blend_colour_R;
blend_amt_G = target_colour_G - blend_colour_G;
blend_amt_B = target_colour_B - blend_colour_B;
if (bytes > 3)
blend_amt_A = target_colour_A - blend_colour_A;
denominator = n * n + n;
denominator = 2.0 / denominator;
}
n--;
}
}
}
}
static gboolean
threshold_exceeded (guchar *pixel_R1,
guchar *pixel_R2,
edge_t edge,
gint threshold,
gboolean has_alpha)
{
gint derivative_R, derivative_G, derivative_B, derivative_A;
get_derivative (pixel_R1, pixel_R2, edge, has_alpha,
&derivative_R, &derivative_G, &derivative_B, &derivative_A);
return (((derivative_R +
derivative_G +
derivative_B +
derivative_A) / 4) > threshold);
}
static void
get_derivative (guchar *pixel_R1,
guchar *pixel_R2,
edge_t edge,
gboolean has_alpha,
gint *derivative_R,
gint *derivative_G,
gint *derivative_B,
gint *derivative_A)
{
guchar *pixel_G1 = pixel_R1 + 1;
guchar *pixel_B1 = pixel_R1 + 2;
guchar *pixel_G2 = pixel_R2 + 1;
guchar *pixel_B2 = pixel_R2 + 2;
guchar *pixel_A1;
guchar *pixel_A2;
if (has_alpha)
{
pixel_A1 = pixel_R1 + 3;
pixel_A2 = pixel_R2 + 3;
*derivative_A = *pixel_A2 - *pixel_A1;
}
else
{
*derivative_A = 0;
}
*derivative_R = *pixel_R2 - *pixel_R1;
*derivative_G = *pixel_G2 - *pixel_G1;
*derivative_B = *pixel_B2 - *pixel_B1;
if (edge == BOTH)
{
*derivative_R = abs (*derivative_R);
*derivative_G = abs (*derivative_G);
*derivative_B = abs (*derivative_B);
*derivative_A = abs (*derivative_A);
}
else if (edge == LEADING)
{
*derivative_R = -(*derivative_R);
*derivative_G = -(*derivative_G);
*derivative_B = -(*derivative_B);
*derivative_A = -(*derivative_A);
}
else if (edge == TRAILING)
{
/* no change needed */
}
}
static void
reverse_buffer (guchar *buffer,
gint length,
gint bytes)
{
gint i, si;
gint temp;
gint midpoint;
midpoint = length / 2;
for (i = 0; i < midpoint; i += bytes)
{
si = length - bytes - i;
temp = buffer[i];
buffer[i] = buffer[si];
buffer[si] = (guchar) temp;
temp = buffer[i + 1];
buffer[i + 1] = buffer[si + 1];
buffer[si + 1] = (guchar) temp;
temp = buffer[i + 2];
buffer[i + 2] = buffer[si + 2];
buffer[si + 2] = (guchar) temp;
if (bytes > 3)
{
temp = buffer[i + 3];
buffer[i + 3] = buffer[si + 3];
buffer[si + 3] = (guchar) temp;
}
}
}
/***************************************************
GUI
***************************************************/
static gint
dialog_box (GimpDrawable *drawable)
{
GtkWidget *dialog;
GtkWidget *main_vbox;
GtkWidget *table;
GtkWidget *preview;
GtkObject *adj;
GtkWidget *frame;
GtkWidget *style1;
GtkWidget *style2;
GtkWidget *dir1;
GtkWidget *dir2;
GtkWidget *edge1;
GtkWidget *edge2;
GtkWidget *edge3;
gboolean run;
gimp_ui_init (PLUG_IN_BINARY, TRUE);
dialog = gimp_dialog_new (_("Wind"), PLUG_IN_BINARY,
NULL, 0,
gimp_standard_help_func, PLUG_IN_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_drawable_preview_new (drawable, NULL);
gtk_box_pack_start_defaults (GTK_BOX (main_vbox), preview);
gtk_widget_show (preview);
g_signal_connect_swapped (preview, "invalidated",
G_CALLBACK (render_effect), drawable);
/*****************************************************
outer frame and table
***************************************************/
table = gtk_table_new (1, 3, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (table), 6);
gtk_table_set_row_spacings (GTK_TABLE (table), 6);
gtk_box_pack_start (GTK_BOX (main_vbox), table, FALSE, FALSE, 0);
/*********************************************************
radio buttons for choosing wind rendering algorithm
******************************************************/
frame = gimp_int_radio_group_new (TRUE, _("Style"),
G_CALLBACK (gimp_radio_button_update),
&config.alg, config.alg,
_("_Wind"), RENDER_WIND, &style1,
_("_Blast"), RENDER_BLAST, &style2,
NULL);
g_signal_connect_swapped (style1, "toggled",
G_CALLBACK (gimp_preview_invalidate),
preview);
g_signal_connect_swapped (style2, "toggled",
G_CALLBACK (gimp_preview_invalidate),
preview);
gtk_table_attach (GTK_TABLE (table), frame, 0, 1, 0, 1,
GTK_FILL | GTK_EXPAND, GTK_FILL | GTK_EXPAND, 0, 0);
gtk_widget_show (frame);
/******************************************************
radio buttons for choosing LEFT or RIGHT
**************************************************/
frame = gimp_int_radio_group_new (TRUE, _("Direction"),
G_CALLBACK (gimp_radio_button_update),
&config.direction, config.direction,
_("_Left"), LEFT, &dir1,
_("_Right"), RIGHT, &dir2,
NULL);
g_signal_connect_swapped (dir1, "toggled",
G_CALLBACK (gimp_preview_invalidate),
preview);
g_signal_connect_swapped (dir2, "toggled",
G_CALLBACK (gimp_preview_invalidate),
preview);
gtk_table_attach (GTK_TABLE (table), frame, 1, 2, 0, 1,
GTK_FILL | GTK_EXPAND, GTK_FILL | GTK_EXPAND, 0, 0);
gtk_widget_show (frame);
/*****************************************************
radio buttons for choosing BOTH, LEADING, TRAILING
***************************************************/
frame = gimp_int_radio_group_new (TRUE, _("Edge Affected"),
G_CALLBACK (gimp_radio_button_update),
&config.edge, config.edge,
_("L_eading"), LEADING, &edge1,
_("Tr_ailing"), TRAILING, &edge2,
_("Bot_h"), BOTH, &edge3,
NULL);
g_signal_connect_swapped (edge1, "toggled",
G_CALLBACK (gimp_preview_invalidate),
preview);
g_signal_connect_swapped (edge2, "toggled",
G_CALLBACK (gimp_preview_invalidate),
preview);
g_signal_connect_swapped (edge3, "toggled",
G_CALLBACK (gimp_preview_invalidate),
preview);
gtk_table_attach (GTK_TABLE (table), frame, 2, 3, 0, 1,
GTK_FILL | GTK_EXPAND, GTK_FILL | GTK_EXPAND, 0, 0);
gtk_widget_show (frame);
gtk_widget_show (table);
/****************************************************
table for sliders
****************************************************/
table = gtk_table_new (2, 3, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (table), 6);
gtk_table_set_row_spacings (GTK_TABLE (table), 6);
gtk_box_pack_start (GTK_BOX (main_vbox), table, FALSE, FALSE, 0);
/*****************************************************
slider and entry for threshold
***************************************************/
adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 0,
_("_Threshold:"), SCALE_WIDTH, 0,
config.threshold,
MIN_THRESHOLD, MAX_THRESHOLD, 1.0, 10, 0,
TRUE, 0, 0,
_("Higher values restrict the effect to fewer areas of the image"), NULL);
g_signal_connect (adj, "value-changed",
G_CALLBACK (gimp_int_adjustment_update),
&config.threshold);
g_signal_connect_swapped (adj, "value-changed",
G_CALLBACK (gimp_preview_invalidate),
preview);
/*****************************************************
slider and entry for strength of wind
****************************************************/
adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 1,
_("_Strength:"), SCALE_WIDTH, 0,
config.strength,
MIN_STRENGTH, MAX_STRENGTH, 1.0, 10.0, 0,
TRUE, 0, 0,
_("Higher values increase the magnitude of the effect"), NULL);
g_signal_connect (adj, "value-changed",
G_CALLBACK (gimp_int_adjustment_update),
&config.strength);
g_signal_connect_swapped (adj, "value-changed",
G_CALLBACK (gimp_preview_invalidate),
preview);
gtk_widget_show (table);
gtk_widget_show (dialog);
run = (gimp_dialog_run (GIMP_DIALOG (dialog)) == GTK_RESPONSE_OK);
gtk_widget_destroy (dialog);
return run;
}
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