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gimp/plug-ins/common/sinus.c

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/*
* This is a plugin for 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 3 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, see <http://www.gnu.org/licenses/>.
*
*/
/*
* 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 <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "libgimp/stdplugins-intl.h"
#define PLUG_IN_PROC "plug-in-sinus"
#define PLUG_IN_BINARY "sinus"
#define PLUG_IN_ROLE "gimp-sinus"
/*
* 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);
const GimpPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run, /* run_proc */
};
MAIN ()
static void
query (void)
{
static const GimpParamDef args[] =
{
{ GIMP_PDB_INT32, "run-mode", "The run mode { RUN-INTERACTIVE (0), RUN-NONINTERACTIVE (1) }" },
{ 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_PROC,
N_("Generate complex sinusoidal textures"),
"FIX ME: sinus help",
"Xavier Bouchoux",
"Xavier Bouchoux",
"1997",
N_("_Sinus..."),
"RGB*, GRAY*",
GIMP_PLUGIN,
G_N_ELEMENTS (args), 0,
args, NULL);
gimp_plugin_menu_register (PLUG_IN_PROC, "<Image>/Filters/Render/Pattern");
}
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_PROC, &svals);
/* In order to prepare the dialog I need to know whether 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_PROC, &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_PROC, &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_context_get_background (&color1);
gimp_context_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;
g_rand_free (gr);
}
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_progress_update (1.0);
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, gtk_adjustment_get_value (adj));
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 */
/*****************************************/
static 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 (PLUG_IN_BINARY, TRUE);
/* Create Main window with a vbox */
/* ============================== */
dlg = gimp_dialog_new (_("Sinus"), PLUG_IN_ROLE,
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 (dlg),
GTK_RESPONSE_OK,
GTK_RESPONSE_CANCEL,
-1);
gimp_window_set_transient (GTK_WINDOW (dlg));
main_hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 12);
gtk_container_set_border_width (GTK_CONTAINER (main_hbox), 12);
gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (dlg))),
main_hbox, TRUE, TRUE, 0);
gtk_widget_show (main_hbox);
/* Create preview */
/* ============== */
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
gtk_box_pack_start (GTK_BOX (main_hbox), vbox, FALSE, FALSE, 0);
gtk_widget_show (vbox);
preview = mw_preview_new (vbox, thePreview);
/* 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_box_new (GTK_ORIENTATION_VERTICAL, 12);
gtk_container_set_border_width (GTK_CONTAINER (page), 12);
frame = gimp_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), 6);
gtk_table_set_row_spacings (GTK_TABLE (table), 6);
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= gimp_frame_new (_("Calculation Settings"));
gtk_box_pack_start (GTK_BOX (page), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
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), 6);
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_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_box_new (GTK_ORIENTATION_VERTICAL, 12);
gtk_container_set_border_width (GTK_CONTAINER (page), 12);
if (drawable_is_grayscale)
{
frame = gimp_frame_new (_("Colors"));
gtk_box_pack_start(GTK_BOX(page), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
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_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0);
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_get_child (GTK_BIN (frame));
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 12);
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 = gimp_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), 6);
gtk_table_set_row_spacings (GTK_TABLE (table), 6);
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_box_new (GTK_ORIENTATION_VERTICAL, 12);
gtk_container_set_border_width (GTK_CONTAINER (page), 12);
frame = gimp_frame_new (_("Blend Settings"));
gtk_box_pack_start (GTK_BOX (page), frame, TRUE, TRUE, 0);
gtk_widget_show (frame);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
gtk_container_add (GTK_CONTAINER (frame), vbox);
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), 6);
gtk_box_pack_start (GTK_BOX (vbox), table, TRUE, TRUE, 0);
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);
sinus_do_preview (preview);
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. */
/******************************************************************/
static void
sinus_do_preview (GtkWidget *widget)
{
static GtkWidget *theWidget = NULL;
gint rowsize;
guchar *buf;
params p;
if (!do_preview)
return;
if (theWidget == NULL)
{
theWidget = widget;
}
rowsize = thePreview->width * thePreview->bpp;
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) /* [dindinx]: it looks to me that this is always true... */
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);
}
gimp_preview_area_draw (GIMP_PREVIEW_AREA (theWidget),
0, 0, thePreview->width, thePreview->height,
GIMP_RGB_IMAGE,
buf,
rowsize);
g_free (buf);
}
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 *vbox;
GtkWidget *button;
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
gtk_box_pack_start (GTK_BOX (parent), vbox, FALSE, FALSE, 0);
gtk_widget_show (vbox);
frame = gtk_aspect_frame_new (NULL, 0.5, 0.5, 1, TRUE);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
preview = gimp_preview_area_new ();
gtk_widget_set_size_request (preview, mwp->width, mwp->height);
gtk_container_add (GTK_CONTAINER (frame), 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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