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Gimp/plug-ins/common/sinus.c
Michael Natterer 61ac7167d6 Reworked random seed handling once more: 
2004-02-01  Michael Natterer  <mitch@gimp.org>

	Reworked random seed handling once more:

	* libgimpwidgets/gimpwidgets.c (gimp_random_seed_new): make sure
	the displayed random seed value is always the one which will be
	used, whether "Randomize" is checked or not.

	* plug-ins/common/blur.c
	* plug-ins/common/plasma.c
	* plug-ins/common/randomize.c
	* plug-ins/common/sinus.c
	* plug-ins/common/snoise.c
	* plug-ins/maze/algorithms.c
	* plug-ins/maze/maze.c: if running interactively, always take
	the seed value produced by the gimp_random_seed widget and don't
	touch it because the widgets honors the "randomize" toggle
	correctly now.

	For noninteractive and last_vals runs, look at the "randomize"
	boolean and generate a seed if it is TRUE.

	Initialize the random number generators from the seed determined
	by either of the above ways and don't fiddle with it in the inner
	algorithms itself.

	* plug-ins/gflare/gflare.c (plugin_run): initialize the GRand
	from the seed unconditionally.

	(ed_make_page_sflare): no need to get the entry from the random
	seed widget to get its adjustment. Instead get the adjustment
	directly.

	(The random handling code of gflare looks somewhat broken, but
	that applies to the whole plug-in).
2004-02-01 13:22:09 +00:00

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/*
* This is a plugin for the GIMP.
*
* Copyright (C) 1997 Xavier Bouchoux
*
* 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.
*
*/
/*
* This plug-in produces sinus textures.
*
* Please send any patches or suggestions to me: Xavier.Bouchoux@ensimag.imag.fr.
*/
/* Version 0.99 */
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#ifdef __GNUC__
#warning GTK_DISABLE_DEPRECATED
#endif
#undef GTK_DISABLE_DEPRECATED
#include <gtk/gtk.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "libgimp/stdplugins-intl.h"
/*
* This structure is used for persistent data.
*/
#define B_W 0L /* colors setting */
#define USE_FG_BG 1L
#define USE_COLORS 2L
#define LINEAR 0L /* colorization settings */
#define BILINEAR 1L
#define SINUS 2L
#define IDEAL 0L /* Perturbation settings */
#define PERTURBED 1L
typedef struct
{
gdouble scalex;
gdouble scaley;
gdouble cmplx;
gdouble blend_power;
guint32 seed;
gint tiling;
glong perturbation;
glong colorization;
glong colors;
GimpRGB col1;
GimpRGB col2;
gboolean random_seed;
} SinusVals;
static SinusVals svals =
{
15.0,
15.0,
1.0,
0.0,
42,
TRUE,
PERTURBED,
LINEAR,
USE_COLORS,
{ 1.0, 1.0, 0.0, 1.0 },
{ 0.0, 0.0, 1.0, 1.0 },
FALSE
};
typedef struct
{
gint height, width;
gdouble c11, c12, c13, c21, c22, c23, c31, c32, c33;
gdouble (*blend) (double );
guchar r, g, b, a;
gint dr, dg, db, da;
} params;
typedef struct
{
gint width;
gint height;
gint bpp;
gdouble scale;
guchar *bits;
} mwPreview;
static gboolean drawable_is_grayscale = FALSE;
static mwPreview *thePreview;
static GimpDrawable *drawable;
/* preview stuff -- to be removed as soon as we have a real libgimp preview */
#define PREVIEW_SIZE 100
static gboolean do_preview = TRUE;
static GtkWidget * mw_preview_new (GtkWidget *parent,
mwPreview *mwp);
static mwPreview * mw_preview_build_virgin (GimpDrawable *drw);
/* Declare functions */
static void query (void);
static void run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals);
static void sinus (void);
static gdouble linear (gdouble v);
static gdouble bilinear (gdouble v);
static gdouble cosinus (gdouble v);
static gint sinus_dialog (void);
static void sinus_do_preview (GtkWidget *widget);
static void assign_block_4 (guchar *dest, gdouble grey, params *p);
static void assign_block_3 (guchar *dest, gdouble grey, params *p);
static void assign_block_2 (guchar *dest, gdouble grey, params *p);
static void assign_block_1 (guchar *dest, gdouble grey, params *p);
static void compute_block_x (guchar *dest_row,
guint rowstride,
gint x0, gint y0, gint w, gint h,
gint bpp,
void (*assign)(guchar *dest, gdouble grey,
params *p),
params *p);
GimpPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run, /* run_proc */
};
MAIN ()
static void
query (void)
{
static 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_FLOAT, "xscale", "Scale value for x axis" },
{ GIMP_PDB_FLOAT, "yscale", "Scale value dor y axis" },
{ GIMP_PDB_FLOAT, "complex", "Complexity factor" },
{ GIMP_PDB_INT32, "seed", "Seed value for random number generator" },
{ GIMP_PDB_INT32, "tiling", "If set, the pattern generated will tile" },
{ GIMP_PDB_INT32, "perturb", "If set, the pattern is a little more distorted..." },
{ GIMP_PDB_INT32, "colors", "where to take the colors (0= B&W, 1= fg/bg, 2= col1/col2)"},
{ GIMP_PDB_COLOR, "col1", "fist color (sometimes unused)" },
{ GIMP_PDB_COLOR, "col2", "second color (sometimes unused)" },
{ GIMP_PDB_FLOAT, "alpha1", "alpha for the first color (used if the drawable has an alpha chanel)" },
{ GIMP_PDB_FLOAT, "alpha2", "alpha for the second color (used if the drawable has an alpha chanel)" },
{ GIMP_PDB_INT32, "blend", "0= linear, 1= bilinear, 2= sinusoidal" },
{ GIMP_PDB_FLOAT, "blend_power", "Power used to strech the blend" },
};
gimp_install_procedure ("plug_in_sinus",
"Generates a texture with sinus functions",
"FIX ME: sinus help",
"Xavier Bouchoux",
"Xavier Bouchoux",
"1997",
N_("<Image>/Filters/Render/Pattern/_Sinus..."),
"RGB*, GRAY*",
GIMP_PLUGIN,
G_N_ELEMENTS (args), 0,
args, NULL);
}
static void
run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals)
{
static GimpParam values[1];
GimpRunMode run_mode;
GimpPDBStatusType status = GIMP_PDB_SUCCESS;
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;
INIT_I18N ();
switch (run_mode)
{
case GIMP_RUN_INTERACTIVE:
/* Possibly retrieve data */
gimp_get_data ("plug_in_sinus", &svals);
/* In order to prepare the dialog I need to know wether it's grayscale or not */
drawable = gimp_drawable_get (param[2].data.d_drawable);
thePreview = mw_preview_build_virgin(drawable);
drawable_is_grayscale = gimp_drawable_is_gray (drawable->drawable_id);
if (! sinus_dialog ())
return;
break;
case GIMP_RUN_NONINTERACTIVE:
/* Make sure all the arguments are there! */
if (nparams != 17)
{
status = GIMP_PDB_CALLING_ERROR;
}
else
{
svals.scalex = param[3].data.d_float;
svals.scaley = param[4].data.d_float;
svals.cmplx = param[5].data.d_float;
svals.seed = param[6].data.d_int32;
svals.tiling = param[7].data.d_int32;
svals.perturbation = param[8].data.d_int32;
svals.colors = param[9].data.d_int32;
svals.col1 = param[10].data.d_color;
svals.col2 = param[11].data.d_color;
gimp_rgb_set_alpha (&svals.col1, param[12].data.d_float);
gimp_rgb_set_alpha (&svals.col2, param[13].data.d_float);
svals.colorization = param[14].data.d_int32;
svals.blend_power = param[15].data.d_float;
if (svals.random_seed)
svals.seed = g_random_int ();
}
break;
case GIMP_RUN_WITH_LAST_VALS:
/* Possibly retrieve data */
gimp_get_data ("plug_in_sinus", &svals);
if (svals.random_seed)
svals.seed = g_random_int ();
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 */
if ((status == GIMP_PDB_SUCCESS) &&
(gimp_drawable_is_rgb (drawable->drawable_id) ||
gimp_drawable_is_gray (drawable->drawable_id)))
{
gimp_progress_init (_("Sinus: rendering..."));
gimp_tile_cache_ntiles (1);
sinus ();
if (run_mode != GIMP_RUN_NONINTERACTIVE)
gimp_displays_flush ();
/* Store data */
if (run_mode == GIMP_RUN_INTERACTIVE)
gimp_set_data ("plug_in_sinus", &svals, sizeof (SinusVals));
}
else
{
status = GIMP_PDB_EXECUTION_ERROR;
}
values[0].data.d_status = status;
gimp_drawable_detach (drawable);
}
/*
* Main procedure
*/
static void
prepare_coef (params *p)
{
GimpRGB color1;
GimpRGB color2;
gdouble scalex = svals.scalex;
gdouble scaley = svals.scaley;
GRand *gr;
gr = g_rand_new ();
g_rand_set_seed (gr, svals.seed);
switch (svals.colorization)
{
case BILINEAR:
p->blend = bilinear;
break;
case SINUS:
p->blend = cosinus;
break;
case LINEAR:
default:
p->blend = linear;
}
if (svals.perturbation==IDEAL)
{
/* Presumably the 0 * g_rand_int ()s are to pop random
* values off the prng, I don't see why though. */
p->c11= 0 * g_rand_int (gr);
p->c12= g_rand_double_range (gr, -1, 1) * scaley;
p->c13= g_rand_double_range (gr, 0, 2 * G_PI);
p->c21= 0 * g_rand_int (gr);
p->c22= g_rand_double_range (gr, -1, 1) * scaley;
p->c23= g_rand_double_range (gr, 0, 2 * G_PI);
p->c31= g_rand_double_range (gr, -1, 1) * scalex;
p->c32= 0 * g_rand_int (gr);
p->c33= g_rand_double_range (gr, 0, 2 * G_PI);
}
else
{
p->c11= g_rand_double_range (gr, -1, 1) * scalex;
p->c12= g_rand_double_range (gr, -1, 1) * scaley;
p->c13= g_rand_double_range (gr, 0, 2 * G_PI);
p->c21= g_rand_double_range (gr, -1, 1) * scalex;
p->c22= g_rand_double_range (gr, -1, 1) * scaley;
p->c23= g_rand_double_range (gr, 0, 2 * G_PI);
p->c31= g_rand_double_range (gr, -1, 1) * scalex;
p->c32= g_rand_double_range (gr, -1, 1) * scaley;
p->c33= g_rand_double_range (gr, 0, 2 * G_PI);
}
if (svals.tiling)
{
p->c11= ROUND (p->c11/(2*G_PI))*2*G_PI;
p->c12= ROUND (p->c12/(2*G_PI))*2*G_PI;
p->c21= ROUND (p->c21/(2*G_PI))*2*G_PI;
p->c22= ROUND (p->c22/(2*G_PI))*2*G_PI;
p->c31= ROUND (p->c31/(2*G_PI))*2*G_PI;
p->c32= ROUND (p->c32/(2*G_PI))*2*G_PI;
}
color1 = svals.col1;
color2 = svals.col2;
if (drawable_is_grayscale)
{
gimp_rgb_set (&color1, 1.0, 1.0, 1.0);
gimp_rgb_set (&color2, 0.0, 0.0, 0.0);
}
else
{
switch (svals.colors)
{
case USE_COLORS:
break;
case B_W:
gimp_rgb_set (&color1, 1.0, 1.0, 1.0);
gimp_rgb_set (&color2, 0.0, 0.0, 0.0);
break;
case USE_FG_BG:
gimp_palette_get_background (&color1);
gimp_palette_get_foreground (&color2);
break;
}
}
gimp_rgba_get_uchar (&color1, &p->r, &p->g, &p->b, &p->a);
gimp_rgba_subtract (&color2, &color1);
p->dr = color2.r * 255.0;
p->dg = color2.g * 255.0;
p->db = color2.b * 255.0;
p->da = color2.a * 255.0;
}
static void
sinus (void)
{
params p;
gint bytes;
GimpPixelRgn dest_rgn;
gint x1, y1, x2, y2;
gpointer pr;
gint progress, max_progress;
prepare_coef(&p);
gimp_drawable_mask_bounds(drawable->drawable_id, &x1, &y1, &x2, &y2);
p.width = drawable->width;
p.height = drawable->height;
bytes = drawable->bpp;
gimp_pixel_rgn_init (&dest_rgn, drawable,
x1, y1, x2 - x1, y2 - y1, TRUE,TRUE);
progress = 0;
max_progress = (x2 - x1) * (y2 - y1);
for (pr = gimp_pixel_rgns_register (1, &dest_rgn);
pr != NULL;
pr = gimp_pixel_rgns_process (pr))
{
switch (bytes)
{
case 4:
compute_block_x (dest_rgn.data, dest_rgn.rowstride,
dest_rgn.x, dest_rgn.y, dest_rgn.w, dest_rgn.h,
4, assign_block_4, &p);
break;
case 3:
compute_block_x (dest_rgn.data, dest_rgn.rowstride,
dest_rgn.x, dest_rgn.y, dest_rgn.w, dest_rgn.h,
3, assign_block_3, &p);
break;
case 2:
compute_block_x (dest_rgn.data, dest_rgn.rowstride,
dest_rgn.x, dest_rgn.y, dest_rgn.w, dest_rgn.h,
2, assign_block_2, &p);
break;
case 1:
compute_block_x (dest_rgn.data, dest_rgn.rowstride,
dest_rgn.x, dest_rgn.y, dest_rgn.w, dest_rgn.h,
1, assign_block_1, &p);
break;
}
progress += dest_rgn.w * dest_rgn.h;
gimp_progress_update ((double) progress / (double) max_progress);
}
gimp_drawable_flush (drawable);
gimp_drawable_merge_shadow (drawable->drawable_id, TRUE);
gimp_drawable_update (drawable->drawable_id, x1, y1, x2 - x1, y2 - y1);
}
static gdouble
linear (gdouble v)
{
double a = v - (int) v;
return (a < 0 ? 1.0 + a : a);
}
static gdouble
bilinear (gdouble v)
{
double a = v - (int) v;
a = (a < 0 ? 1.0 + a : a);
return (a > 0.5 ? 2 - 2 * a : 2 * a);
}
static gdouble
cosinus (gdouble v)
{
return 0.5 - 0.5 * sin ((v + 0.25) * G_PI * 2);
}
static void
assign_block_4 (guchar *dest, gdouble grey, params *p)
{
dest[0] = p->r + (gint) (grey * p->dr);
dest[1] = p->g + (gint) (grey * p->dg);
dest[2] = p->b + (gint) (grey * p->db);
dest[3] = p->a + (gint) (grey * p->da);
}
static void
assign_block_3 (guchar *dest, gdouble grey, params *p)
{
dest[0] = p->r + (gint) (grey * p->dr);
dest[1] = p->g + (gint) (grey * p->dg);
dest[2] = p->b + (gint) (grey * p->db);
}
static void
assign_block_2 (guchar *dest, gdouble grey, params *p)
{
dest[0] = (guchar) (grey * 255.0);
dest[1] = p->a + (gint)(grey * p->da);
}
static void
assign_block_1 (guchar *dest, gdouble grey, params *p)
{
dest[0]= (guchar) (grey * 255.0);
}
static void
compute_block_x (guchar *dest_row, guint rowstride,
gint x0, gint y0, gint w, gint h,
gint bpp,
void (*assign)(guchar *dest, gdouble grey, params *p),
params *p)
{
gint i, j;
gdouble x, y, grey;
gdouble pow_exp;
guchar *dest;
pow_exp = exp (svals.blend_power);
for (j = y0; j < y0 + h; j++)
{
y= ((gdouble) j) / p->height;
dest = dest_row;
for (i = x0; i < x0 + w; i++)
{
gdouble c;
x = ((gdouble) i) / p->width;
c = 0.5 * sin(p->c31 * x + p->c32 * y + p->c33);
grey = sin(p->c11 * x + p->c12 * y + p->c13) * (0.5 + 0.5 * c) +
sin(p->c21 * x + p->c22 * y + p->c23) * (0.5 - 0.5 * c);
grey = pow(p->blend(svals.cmplx * (0.5 + 0.5 * grey)), pow_exp);
assign (dest, grey, p);
dest += bpp;
}
dest_row += rowstride;
}
}
static void
alpha_scale_cb (GtkAdjustment *adj,
gpointer data)
{
GimpColorButton *color_button;
GimpRGB color;
if (!data)
return;
color_button = GIMP_COLOR_BUTTON (data);
gimp_color_button_get_color (GIMP_COLOR_BUTTON (color_button), &color);
gimp_rgb_set_alpha (&color, adj->value);
gimp_color_button_set_color (GIMP_COLOR_BUTTON (color_button), &color);
}
static void
alpha_scale_update (GtkWidget *color_button,
gpointer data)
{
GtkAdjustment *adj;
GimpRGB color;
adj = GTK_ADJUSTMENT (data);
gimp_color_button_get_color (GIMP_COLOR_BUTTON (color_button), &color);
gtk_adjustment_set_value (adj, color.a);
sinus_do_preview (NULL);
}
static void
sinus_toggle_button_update (GtkWidget *widget,
gpointer data)
{
gimp_toggle_button_update (widget, data);
sinus_do_preview (NULL);
}
static void
sinus_radio_button_update (GtkWidget *widget,
gpointer data)
{
gimp_radio_button_update (widget, data);
sinus_do_preview (NULL);
}
static void
sinus_double_adjustment_update (GtkAdjustment *adjustment,
gpointer data)
{
gimp_double_adjustment_update (adjustment, data);
sinus_do_preview (NULL);
}
static void
sinus_random_update (GObject *unused,
gpointer data)
{
sinus_do_preview (NULL);
}
/*****************************************/
/* The note book */
/*****************************************/
gint
sinus_dialog (void)
{
GtkWidget *dlg;
GtkWidget *main_hbox;
GtkWidget *preview;
GtkWidget *notebook;
GtkWidget *page;
GtkWidget *frame;
GtkWidget *label;
GtkWidget *vbox;
GtkWidget *vbox2;
GtkWidget *hbox;
GtkWidget *table;
GtkWidget *toggle;
GtkWidget *push_col1 = NULL;
GtkWidget *push_col2 = NULL;
GtkObject *adj;
gboolean run;
gimp_ui_init ("sinus", TRUE);
/* Create Main window with a vbox */
/* ============================== */
dlg = gimp_dialog_new (_("Sinus"), "sinus",
NULL, 0,
gimp_standard_help_func, "plug-in-sinus",
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
GTK_STOCK_OK, GTK_RESPONSE_OK,
NULL);
main_hbox = gtk_hbox_new (FALSE, 6);
gtk_container_set_border_width (GTK_CONTAINER (main_hbox), 6);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dlg)->vbox), main_hbox,
TRUE, TRUE, 0);
gtk_widget_show (main_hbox);
/* Create preview */
/* ============== */
vbox = gtk_vbox_new (TRUE, 4);
gtk_box_pack_start (GTK_BOX (main_hbox), vbox, FALSE, FALSE, 0);
gtk_widget_show (vbox);
preview = mw_preview_new (vbox, thePreview);
sinus_do_preview (preview);
/* Create the notebook */
/* =================== */
notebook = gtk_notebook_new ();
gtk_notebook_set_tab_pos (GTK_NOTEBOOK (notebook), GTK_POS_TOP);
gtk_box_pack_start (GTK_BOX (main_hbox), notebook, FALSE, FALSE, 0);
gtk_widget_show (notebook);
/* Create the drawing settings frame */
/* ================================= */
page = gtk_vbox_new (FALSE, 5);
gtk_container_set_border_width (GTK_CONTAINER (page), 4);
frame = gtk_frame_new (_("Drawing Settings"));
gtk_box_pack_start (GTK_BOX (page), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
table = gtk_table_new(3, 3, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (table), 4);
gtk_table_set_row_spacings (GTK_TABLE (table), 2);
gtk_container_set_border_width (GTK_CONTAINER (table), 4);
gtk_container_add (GTK_CONTAINER(frame), table);
adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 0,
_("_X Scale:"), 140, 8,
svals.scalex, 0.0001, 100.0, 0.0001, 5, 4,
TRUE, 0, 0,
NULL, NULL);
g_signal_connect (adj, "value_changed",
G_CALLBACK (sinus_double_adjustment_update),
&svals.scalex);
adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 1,
_("_Y Scale:"), 140, 8,
svals.scaley, 0.0001, 100.0, 0.0001, 5, 4,
TRUE, 0, 0,
NULL, NULL);
g_signal_connect (adj, "value_changed",
G_CALLBACK (sinus_double_adjustment_update),
&svals.scaley);
adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 2,
_("Co_mplexity:"), 140, 8,
svals.cmplx, 0.0, 15.0, 0.01, 5, 2,
TRUE, 0, 0,
NULL, NULL);
g_signal_connect (adj, "value_changed",
G_CALLBACK (sinus_double_adjustment_update),
&svals.cmplx);
gtk_widget_show (table);
frame= gtk_frame_new (_("Calculation Settings"));
gtk_box_pack_start (GTK_BOX (page), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
vbox = gtk_vbox_new (FALSE, 4);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 4);
gtk_container_add (GTK_CONTAINER (frame), vbox);
gtk_widget_show (vbox);
table = gtk_table_new(3, 1, FALSE);
gtk_table_set_col_spacings(GTK_TABLE(table), 4);
gtk_box_pack_start (GTK_BOX (vbox), table, FALSE, FALSE, 0);
hbox = gimp_random_seed_new (&svals.seed, &svals.random_seed);
label = gimp_table_attach_aligned (GTK_TABLE (table), 0, 0,
_("R_andom Seed:"), 1.0, 0.5,
hbox, 1, TRUE);
gtk_label_set_mnemonic_widget (GTK_LABEL (label),
GIMP_RANDOM_SEED_SPINBUTTON (hbox));
g_signal_connect (GIMP_RANDOM_SEED_SPINBUTTON_ADJ (hbox),
"value_changed", G_CALLBACK (sinus_random_update), NULL);
gtk_widget_show (table);
toggle = gtk_check_button_new_with_mnemonic (_("_Force Tiling?"));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), svals.tiling);
gtk_box_pack_start (GTK_BOX (vbox), toggle, FALSE, FALSE, 0);
gtk_widget_show (toggle);
g_signal_connect (toggle, "toggled",
G_CALLBACK (sinus_toggle_button_update),
&svals.tiling);
vbox2 = gimp_int_radio_group_new (FALSE, NULL,
G_CALLBACK (sinus_radio_button_update),
&svals.perturbation, svals.perturbation,
_("_Ideal"), IDEAL, NULL,
_("_Distorted"), PERTURBED, NULL,
NULL);
gtk_container_set_border_width (GTK_CONTAINER (vbox2), 0);
gtk_box_pack_start (GTK_BOX (vbox), vbox2, FALSE, FALSE, 0);
gtk_widget_show (vbox2);
label = gtk_label_new_with_mnemonic (_("_Settings"));
gtk_notebook_append_page (GTK_NOTEBOOK (notebook), page, label);
gtk_widget_show (page);
/* Color settings dialog: */
/* ====================== */
page = gtk_vbox_new (FALSE, 4);
gtk_container_set_border_width (GTK_CONTAINER (page), 4);
if (drawable_is_grayscale)
{
frame = gtk_frame_new (_("Colors"));
gtk_box_pack_start(GTK_BOX(page), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
vbox = gtk_vbox_new (FALSE, 2);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 4);
gtk_container_add (GTK_CONTAINER (frame), vbox);
gtk_widget_show (vbox);
/*if in grey scale, the colors are necessarily black and white */
label = gtk_label_new (_("The colors are white and black."));
gtk_misc_set_alignment (GTK_MISC (label), 0.5, 0.5);
gtk_container_add (GTK_CONTAINER (vbox), label);
gtk_widget_show (label);
}
else
{
frame = gimp_int_radio_group_new (TRUE, _("Colors"),
G_CALLBACK (sinus_radio_button_update),
&svals.colors, svals.colors,
_("Bl_ack & White"),
B_W, NULL,
_("_Foreground & Background"),
USE_FG_BG, NULL,
_("C_hoose here:"),
USE_COLORS, NULL,
NULL);
gtk_box_pack_start(GTK_BOX(page), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
vbox = GTK_BIN (frame)->child;
hbox = gtk_hbox_new (TRUE, 20);
gtk_container_set_border_width (GTK_CONTAINER (hbox), 4);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
push_col1 = gimp_color_button_new (_("First Color"), 32, 32,
&svals.col1,
GIMP_COLOR_AREA_SMALL_CHECKS);
gtk_box_pack_start (GTK_BOX (hbox), push_col1, FALSE, FALSE, 0);
gtk_widget_show (push_col1);
g_signal_connect (push_col1, "color_changed",
G_CALLBACK (gimp_color_button_get_color),
&svals.col1);
push_col2 = gimp_color_button_new (_("Second Color"), 32, 32,
&svals.col2,
GIMP_COLOR_AREA_SMALL_CHECKS);
gtk_box_pack_start (GTK_BOX (hbox), push_col2, FALSE, FALSE, 0);
gtk_widget_show (push_col2);
g_signal_connect (push_col2, "color_changed",
G_CALLBACK (gimp_color_button_get_color),
&svals.col2);
gtk_widget_show (hbox);
}
frame = gtk_frame_new (_("Alpha Channels"));
gtk_box_pack_start (GTK_BOX (page), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
gtk_widget_set_sensitive (frame,
gimp_drawable_has_alpha (drawable->drawable_id));
table = gtk_table_new (2, 3, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (table), 4);
gtk_table_set_row_spacings (GTK_TABLE (table), 2);
gtk_container_set_border_width (GTK_CONTAINER (table), 4);
gtk_container_add (GTK_CONTAINER (frame), table);
adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 0,
_("F_irst Color:"), 0, 0,
svals.col1.a, 0.0, 1.0, 0.01, 0.1, 2,
TRUE, 0, 0,
NULL, NULL);
g_signal_connect (adj, "value_changed",
G_CALLBACK (alpha_scale_cb),
push_col1);
if (push_col1)
g_signal_connect (push_col1, "color_changed",
G_CALLBACK (alpha_scale_update),
adj);
adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 1,
_("S_econd Color:"), 0, 0,
svals.col2.a, 0.0, 1.0, 0.01, 0.1, 2,
TRUE, 0, 0,
NULL, NULL);
g_signal_connect (adj, "value_changed",
G_CALLBACK (alpha_scale_cb),
push_col2);
if (push_col2)
g_signal_connect (push_col2, "color_changed",
G_CALLBACK (alpha_scale_update),
adj);
gtk_widget_show (table);
label = gtk_label_new_with_mnemonic (_("Co_lors"));
gtk_notebook_append_page (GTK_NOTEBOOK (notebook), page, label);
gtk_widget_show (page);
/* blend settings dialog: */
/* ====================== */
page = gtk_vbox_new (FALSE, 4);
gtk_container_set_border_width (GTK_CONTAINER (page), 4);
frame = gtk_frame_new (_("Blend Settings"));
gtk_box_pack_start (GTK_BOX (page), frame, TRUE, TRUE, 0);
gtk_widget_show (frame);
vbox = gtk_vbox_new (FALSE, 4);
gtk_container_add (GTK_CONTAINER (frame), vbox);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 4);
gtk_widget_show (vbox);
frame =
gimp_int_radio_group_new (TRUE, _("Gradient"),
G_CALLBACK (sinus_radio_button_update),
&svals.colorization, svals.colorization,
_("L_inear"), LINEAR, NULL,
_("Bili_near"), BILINEAR, NULL,
_("Sin_usoidal"), SINUS, NULL,
NULL);
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
table = gtk_table_new (1, 3, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (table), 4);
gtk_container_add (GTK_CONTAINER (vbox), table);
adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 0,
_("_Exponent:"), 0, 0,
svals.blend_power, -7.5, 7.5, 0.01, 5.0, 2,
TRUE, 0, 0,
NULL, NULL);
g_signal_connect (adj, "value_changed",
G_CALLBACK (sinus_double_adjustment_update),
&svals.blend_power);
gtk_widget_show (table);
label = gtk_label_new_with_mnemonic (_("_Blend"));
gtk_notebook_append_page (GTK_NOTEBOOK (notebook), page, label);
gtk_widget_show (page);
gtk_widget_show (dlg);
run = (gimp_dialog_run (GIMP_DIALOG (dlg)) == GTK_RESPONSE_OK);
gtk_widget_destroy (dlg);
return run;
}
/******************************************************************/
/* Draw preview image. if DoCompute is TRUE then recompute image. */
/******************************************************************/
void
sinus_do_preview (GtkWidget *widget)
{
static GtkWidget *theWidget = NULL;
gint y,rowsize;
guchar *buf, *savbuf;
params p;
if (!do_preview)
return;
if (theWidget == NULL)
{
theWidget = widget;
}
rowsize = thePreview->width * thePreview->bpp;
savbuf = buf = g_new (guchar,
thePreview->width*thePreview->height*thePreview->bpp);
p.height = thePreview->height;
p.width = thePreview->width;
prepare_coef (&p);
if (thePreview->bpp == 3)
compute_block_x (buf, rowsize, 0, 0, thePreview->width, thePreview->height,
3, assign_block_3, &p);
else if (thePreview->bpp == 1)
{
compute_block_x (buf, rowsize, 0, 0, thePreview->width,
thePreview->height, 1, assign_block_1, &p);
}
for (y = 0; y < thePreview->height; y++)
{
gtk_preview_draw_row (GTK_PREVIEW (theWidget),
buf, 0, y, thePreview->width);
buf += rowsize;
}
g_free (savbuf);
gtk_widget_queue_draw (theWidget);
}
static void
mw_preview_toggle_callback (GtkWidget *widget,
gpointer data)
{
gimp_toggle_button_update (widget, data);
sinus_do_preview (NULL);
}
static mwPreview *
mw_preview_build_virgin (GimpDrawable *drw)
{
mwPreview *mwp;
mwp = g_new (mwPreview, 1);
if (drw->width > drw->height)
{
mwp->scale = (gdouble) drw->width / (gdouble) PREVIEW_SIZE;
mwp->width = PREVIEW_SIZE;
mwp->height = drw->height / mwp->scale;
}
else
{
mwp->scale = (gdouble) drw->height / (gdouble) PREVIEW_SIZE;
mwp->height = PREVIEW_SIZE;
mwp->width = drw->width / mwp->scale;
}
mwp->bpp = 3;
mwp->bits = NULL;
return mwp;
}
static GtkWidget *
mw_preview_new (GtkWidget *parent,
mwPreview *mwp)
{
GtkWidget *preview;
GtkWidget *frame;
GtkWidget *pframe;
GtkWidget *vbox;
GtkWidget *button;
frame = gtk_frame_new (_("Preview"));
gtk_box_pack_start (GTK_BOX (parent), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
vbox = gtk_vbox_new (FALSE, 2);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 4);
gtk_container_add (GTK_CONTAINER (frame), vbox);
gtk_widget_show (vbox);
pframe = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME(pframe), GTK_SHADOW_IN);
gtk_box_pack_start (GTK_BOX (vbox), pframe, FALSE, FALSE, 0);
gtk_widget_show (pframe);
preview = gtk_preview_new (GTK_PREVIEW_COLOR);
gtk_preview_size (GTK_PREVIEW (preview), mwp->width, mwp->height);
gtk_container_add (GTK_CONTAINER (pframe), preview);
gtk_widget_show (preview);
button = gtk_check_button_new_with_mnemonic (_("Do _Preview"));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), do_preview);
gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0);
gtk_widget_show (button);
g_signal_connect (button, "toggled",
G_CALLBACK (mw_preview_toggle_callback),
&do_preview);
return preview;
}
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