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b10adabb5eda9314411bd4030a16542940cd8160
gimp/plug-ins/common/diffraction.c
Michael Natterer b10adabb5e Added parent window API to the GimpProgress interface and to the libgimp 
2005-09-09  Michael Natterer  <mitch@gimp.org>

	Added parent window API to the GimpProgress interface and to
	the libgimp progress stuff. Might look strange, but does
	the right thing in almost all cases (image window, file dialog,
	script-fu dialog etc). Fixes bug #62988.

	* app/core/gimpprogress.[ch]: added GimpProgress::get_window()
	which should return a toplevel window ID if the progress is in a
	window that wants to be the transient parent of plug-in dialogs.

	* app/widgets/gimpwidgets-utils.[ch] (gimp_window_get_native): new
	function which returns the window handle of a GtkWindow's GdkWindow.

	* app/widgets/gimpfiledialog.c: implement ::get_window().

	* app/display/gimpdisplay.[ch]: ditto. Removed window handle API.

	* app/gui/gui-vtable.c: changed accordingly.

	* libgimpbase/gimpbaseenums.[ch] (enum GimpProgressCommand):
	added GIMP_PROGRESS_COMMAND_GET_WINDOW.

	* app/plug-in/plug-in-progress.[ch] (plug_in_progress_get_window):
	new function. Also renamed some functions to match the
	GimpProgress interface, and not the legacy PDB procedure names.

	* tools/pdbgen/pdb/progress.pdb
	* app/core/gimppdbprogress.c: implement get_window() on both
	sides of the wire, keeping backward compatibility (hopefully).

	* libgimp/gimpprogress.[ch]: deprecated gimp_progress_install()
	and added gimp_progress_install_vtable() which takes a vtable with
	padding to be extensible. Added get_window() vtable entry and
	dispatch it accordingly. Also added pulse() which was implemented
	in a hackish way before. Everything is of course backward
	compatible.

	* libgimp/gimpprogressbar.c: inmplement the get_window() stuff
	so a plug-in dialog containing a progress can be the transient
	parent of another dialog in another plug-in.

	* libgimp/gimpui.[ch] (gimp_ui_get_progress_window): new function
	which returns a foreign GdkWindow of this plug-ins progress
	window.

	Renamed gimp_window_set_transient_for_default_display() to
	gimp_window_set_transient() and make it use the progress' window
	handle instead of the display's (which is the right thing to do in
	almost all cases).

	* libgimp/gimp.def
	* libgimp/gimpui.def: add the new functions.

	* tools/pdbgen/enums.pl
	* app/pdb/internal_procs.c
	* app/pdb/progress_cmds.c
	* libgimp/gimpprogress_pdb.[ch]: regenerated.

	* libgimp/gimpexport.c
	* plug-ins/*/*.c: follow API change.
2005-09-09 18:07:31 +00:00

718 lines
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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* Diffraction plug-in --- Generate diffraction patterns
* Copyright (C) 1997 Federico Mena Quintero and David Bleecker
* federico@nuclecu.unam.mx
* bleecker@math.hawaii.edu
*
* 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.
*/
#include "config.h"
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "libgimp/stdplugins-intl.h"
#define PLUG_IN_PROC "plug-in-diffraction"
#define PLUG_IN_BINARY "diffraction"
/***** Magic numbers *****/
#define ITERATIONS 100
#define WEIRD_FACTOR 0.04
#define PREVIEW_WIDTH 64
#define PREVIEW_HEIGHT 64
#define PROGRESS_WIDTH 32
#define PROGRESS_HEIGHT 16
#define SCALE_WIDTH 150
/***** Types *****/
typedef struct
{
gdouble lam_r;
gdouble lam_g;
gdouble lam_b;
gdouble contour_r;
gdouble contour_g;
gdouble contour_b;
gdouble edges_r;
gdouble edges_g;
gdouble edges_b;
gdouble brightness;
gdouble scattering;
gdouble polarization;
} diffraction_vals_t;
typedef struct
{
GtkWidget *preview;
GtkWidget *progress;
guchar preview_buffer[PREVIEW_WIDTH * PREVIEW_HEIGHT * 3];
} diffraction_interface_t;
/***** Prototypes *****/
static void query (void);
static void run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals);
static void diffraction (GimpDrawable *drawable);
static void diff_init_luts (void);
static void diff_diffract (gdouble x,
gdouble y,
GimpRGB *rgb);
static double diff_point (gdouble x,
gdouble y,
gdouble edges,
gdouble contours,
gdouble lam);
static double diff_intensity (gdouble x,
gdouble y,
gdouble lam);
static gboolean diffraction_dialog (void);
static void dialog_update_preview (void);
static void dialog_update_callback (GtkWidget *widget,
gpointer data);
/***** Variables *****/
GimpPlugInInfo PLUG_IN_INFO =
{
NULL, /* init */
NULL, /* quit */
query, /* query */
run /* run */
};
static diffraction_vals_t dvals =
{
0.815, /* lam_r */
1.221, /* lam_g */
1.123, /* lam_b */
0.821, /* contour_r */
0.821, /* contour_g */
0.974, /* contour_b */
0.610, /* edges_r */
0.677, /* edges_g */
0.636, /* edges_b */
0.066, /* brightness */
37.126, /* scattering */
-0.473 /* polarization */
};
static diffraction_interface_t dint =
{
NULL, /* preview */
NULL, /* progress */
{ 0 } /* preview_buffer */
};
static gdouble cos_lut[ITERATIONS + 1];
static gdouble param_lut1[ITERATIONS + 1];
static gdouble param_lut2[ITERATIONS + 1];
/***** Functions *****/
MAIN ()
static void
query (void)
{
static GimpParamDef args[] =
{
{ GIMP_PDB_INT32, "run-mode", "Interactive, non-interactive" },
{ GIMP_PDB_IMAGE, "image", "Input image" },
{ GIMP_PDB_DRAWABLE, "drawable", "Input drawable" },
{ GIMP_PDB_FLOAT, "lam-r", "Light frequency (red)" },
{ GIMP_PDB_FLOAT, "lam-g", "Light frequency (green)" },
{ GIMP_PDB_FLOAT, "lam-b", "Light frequency (blue)" },
{ GIMP_PDB_FLOAT, "contour-r", "Number of contours (red)" },
{ GIMP_PDB_FLOAT, "contour-g", "Number of contours (green)" },
{ GIMP_PDB_FLOAT, "contour-b", "Number of contours (blue)" },
{ GIMP_PDB_FLOAT, "edges-r", "Number of sharp edges (red)" },
{ GIMP_PDB_FLOAT, "edges-g", "Number of sharp edges (green)" },
{ GIMP_PDB_FLOAT, "edges-b", "Number of sharp edges (blue)" },
{ GIMP_PDB_FLOAT, "brightness", "Brightness and shifting/fattening of contours" },
{ GIMP_PDB_FLOAT, "scattering", "Scattering (Speed vs. quality)" },
{ GIMP_PDB_FLOAT, "polarization", "Polarization" }
};
gimp_install_procedure (PLUG_IN_PROC,
"Generate diffraction patterns",
"Help? What help? Real men do not need help :-)",
"Federico Mena Quintero",
"Federico Mena Quintero & David Bleecker",
"April 1997, 0.5",
N_("_Diffraction Patterns..."),
"RGB*",
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];
GimpDrawable *active_drawable;
GimpPDBStatusType status;
GimpRunMode run_mode;
/* Initialize */
INIT_I18N ();
diff_init_luts ();
status = GIMP_PDB_SUCCESS;
run_mode = param[0].data.d_int32;
values[0].type = GIMP_PDB_STATUS;
values[0].data.d_status = status;
*nreturn_vals = 1;
*return_vals = values;
switch (run_mode)
{
case GIMP_RUN_INTERACTIVE:
/* Possibly retrieve data */
gimp_get_data (PLUG_IN_PROC, &dvals);
/* Get information from the dialog */
if (!diffraction_dialog ())
return;
break;
case GIMP_RUN_NONINTERACTIVE:
/* Make sure all the arguments are present */
if (nparams != 15)
status = GIMP_PDB_CALLING_ERROR;
if (status == GIMP_PDB_SUCCESS)
{
dvals.lam_r = param[3].data.d_float;
dvals.lam_g = param[4].data.d_float;
dvals.lam_b = param[5].data.d_float;
dvals.contour_r = param[6].data.d_float;
dvals.contour_g = param[7].data.d_float;
dvals.contour_b = param[8].data.d_float;
dvals.edges_r = param[9].data.d_float;
dvals.edges_g = param[10].data.d_float;
dvals.edges_b = param[11].data.d_float;
dvals.brightness = param[12].data.d_float;
dvals.scattering = param[13].data.d_float;
dvals.polarization = param[14].data.d_float;
}
break;
case GIMP_RUN_WITH_LAST_VALS:
/* Possibly retrieve data */
gimp_get_data (PLUG_IN_PROC, &dvals);
break;
default:
break;
}
/* Get the active drawable */
active_drawable = gimp_drawable_get (param[2].data.d_drawable);
/* Create the diffraction pattern */
if ((status == GIMP_PDB_SUCCESS) &&
gimp_drawable_is_rgb (active_drawable->drawable_id))
{
/* Set the tile cache size */
gimp_tile_cache_ntiles ((active_drawable->width + gimp_tile_width() - 1) /
gimp_tile_width());
/* Run! */
diffraction (active_drawable);
/* If run mode is interactive, flush displays */
if (run_mode != GIMP_RUN_NONINTERACTIVE)
gimp_displays_flush ();
/* Store data */
if (run_mode == GIMP_RUN_INTERACTIVE)
gimp_set_data (PLUG_IN_PROC, &dvals, sizeof (diffraction_vals_t));
}
else if (status == GIMP_PDB_SUCCESS)
{
status = GIMP_PDB_EXECUTION_ERROR;
}
values[0].data.d_status = status;
gimp_drawable_detach (active_drawable);
}
typedef struct {
gdouble dhoriz;
gdouble dvert;
gint x1;
gint y1;
} DiffractionParam_t;
static void
diffraction_func (gint x,
gint y,
guchar *dest,
gint bpp,
gpointer data)
{
DiffractionParam_t *param = (DiffractionParam_t*) data;
gdouble px, py;
GimpRGB rgb;
px = -5.0 + param->dhoriz * (x - param->x1);
py = 5.0 + param->dvert * (y - param->y1);
diff_diffract (px, py, &rgb);
dest[0] = 255.0 * rgb.r;
dest[1] = 255.0 * rgb.g;
dest[2] = 255.0 * rgb.b;
if (bpp == 4)
dest[3] = 255;
}
static void
diffraction (GimpDrawable *drawable)
{
GimpRgnIterator *iter;
DiffractionParam_t param;
gint x1, y1, x2, y2;
gimp_drawable_mask_bounds (drawable->drawable_id, &x1, &y1, &x2, &y2);
param.x1 = x1;
param.y1 = y1;
param.dhoriz = 10.0 / (x2 - x1 - 1);
param.dvert = -10.0 / (y2 - y1 - 1);
gimp_progress_init (_("Creating diffraction pattern..."));
iter = gimp_rgn_iterator_new (drawable, 0);
gimp_rgn_iterator_dest (iter, diffraction_func, &param);
gimp_rgn_iterator_free (iter);
}
static void
diff_init_luts (void)
{
int i;
double a;
double sina;
a = -G_PI;
for (i = 0; i <= ITERATIONS; i++)
{
sina = sin (a);
cos_lut[i] = cos (a);
param_lut1[i] = 0.75 * sina;
param_lut2[i] = 0.5 * (4.0 * cos_lut[i] * cos_lut[i] + sina * sina);
a += (2.0 * G_PI / ITERATIONS);
}
}
static void
diff_diffract (double x,
double y,
GimpRGB* rgb)
{
rgb->r = diff_point (x, y, dvals.edges_r, dvals.contour_r, dvals.lam_r);
rgb->g = diff_point (x, y, dvals.edges_g, dvals.contour_g, dvals.lam_g);
rgb->b = diff_point (x, y, dvals.edges_b, dvals.contour_b, dvals.lam_b);
}
static double
diff_point (double x,
double y,
double edges,
double contours,
double lam)
{
return fabs (edges * sin (contours * atan (dvals.brightness *
diff_intensity (x, y, lam))));
}
static double
diff_intensity (double x,
double y,
double lam)
{
int i;
double cxy, sxy;
double param;
double polpi2;
double cospolpi2, sinpolpi2;
cxy = 0.0;
sxy = 0.0;
lam *= 4.0;
for (i = 0; i <= ITERATIONS; i++)
{
param = lam *
(cos_lut[i] * x +
param_lut1[i] * y -
param_lut2[i]);
cxy += cos (param);
sxy += sin (param);
}
cxy *= WEIRD_FACTOR;
sxy *= WEIRD_FACTOR;
polpi2 = dvals.polarization * (G_PI / 2.0);
cospolpi2 = cos (polpi2);
sinpolpi2 = sin (polpi2);
return dvals.scattering * ((cospolpi2 + sinpolpi2) * cxy * cxy +
(cospolpi2 - sinpolpi2) * sxy * sxy);
}
static gboolean
diffraction_dialog (void)
{
GtkWidget *dialog;
GtkWidget *hbox;
GtkWidget *notebook;
GtkWidget *frame;
GtkWidget *vbox;
GtkWidget *table;
GtkWidget *label;
GtkWidget *button;
GtkObject *adj;
gboolean run;
gimp_ui_init (PLUG_IN_BINARY, TRUE);
dialog = gimp_dialog_new (_("Diffraction Patterns"), 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));
hbox = gtk_hbox_new (FALSE, 12);
gtk_container_set_border_width (GTK_CONTAINER (hbox), 12);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dialog)->vbox), hbox,
FALSE, FALSE, 0);
gtk_widget_show (hbox);
/* Preview */
vbox = gtk_vbox_new (FALSE, 2);
gtk_box_pack_start (GTK_BOX (hbox), vbox, FALSE, FALSE, 0);
gtk_widget_show (vbox);
frame = gtk_aspect_frame_new (NULL, 0.5, 0.5, 1.0, 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);
dint.preview = gimp_preview_area_new ();
gtk_widget_set_size_request (dint.preview, PREVIEW_WIDTH, PREVIEW_HEIGHT);
gtk_container_add (GTK_CONTAINER (frame), dint.preview);
gtk_widget_show (dint.preview);
dint.progress = gtk_progress_bar_new ();
gtk_widget_set_size_request (dint.progress, PROGRESS_WIDTH, PROGRESS_HEIGHT);
gtk_box_pack_start (GTK_BOX (vbox), dint.progress, FALSE, FALSE, 0);
gtk_widget_show (dint.progress);
button = gtk_button_new_with_mnemonic (_("_Preview!"));
gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0);
gtk_widget_show (button);
g_signal_connect (button, "clicked",
G_CALLBACK (dialog_update_callback),
NULL);
/* Notebook */
notebook = gtk_notebook_new ();
gtk_notebook_set_tab_pos (GTK_NOTEBOOK (notebook), GTK_POS_TOP);
gtk_box_pack_start (GTK_BOX (hbox), notebook, TRUE, TRUE, 0);
gtk_widget_show (notebook);
/* Frequencies tab */
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_set_border_width (GTK_CONTAINER (table), 12);
gtk_widget_show (table);
adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 0,
_("_Red:"), SCALE_WIDTH, 0,
dvals.lam_r, 0.0, 20.0, 0.2, 1.0, 3,
TRUE, 0, 0,
NULL, NULL);
g_signal_connect (adj, "value-changed",
G_CALLBACK (gimp_double_adjustment_update),
&dvals.lam_r);
adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 1,
_("_Green:"), SCALE_WIDTH, 0,
dvals.lam_g, 0.0, 20.0, 0.2, 1.0, 3,
TRUE, 0, 0,
NULL, NULL);
g_signal_connect (adj, "value-changed",
G_CALLBACK (gimp_double_adjustment_update),
&dvals.lam_g);
adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 2,
_("_Blue:"), SCALE_WIDTH, 0,
dvals.lam_b, 0.0, 20.0, 0.2, 1.0, 3,
TRUE, 0, 0,
NULL, NULL);
g_signal_connect (adj, "value-changed",
G_CALLBACK (gimp_double_adjustment_update),
&dvals.lam_b);
label = gtk_label_new_with_mnemonic (_("Frequencies"));
gtk_notebook_append_page (GTK_NOTEBOOK (notebook), table, label);
/* Contours tab */
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_set_border_width (GTK_CONTAINER (table), 12);
gtk_widget_show (table);
adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 0,
_("_Red:"), SCALE_WIDTH, 0,
dvals.contour_r, 0.0, 10.0, 0.1, 1.0, 3,
TRUE, 0, 0,
NULL, NULL);
g_signal_connect (adj, "value-changed",
G_CALLBACK (gimp_double_adjustment_update),
&dvals.contour_r);
adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 1,
_("_Green:"), SCALE_WIDTH, 0,
dvals.contour_g, 0.0, 10.0, 0.1, 1.0, 3,
TRUE, 0, 0,
NULL, NULL);
g_signal_connect (adj, "value-changed",
G_CALLBACK (gimp_double_adjustment_update),
&dvals.contour_g);
adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 2,
_("_Blue:"), SCALE_WIDTH, 0,
dvals.contour_b, 0.0, 10.0, 0.1, 1.0, 3,
TRUE, 0, 0,
NULL, NULL);
g_signal_connect (adj, "value-changed",
G_CALLBACK (gimp_double_adjustment_update),
&dvals.contour_b);
label = gtk_label_new_with_mnemonic (_("Contours"));
gtk_notebook_append_page (GTK_NOTEBOOK (notebook), table, label);
/* Sharp edges tab */
table = gtk_table_new (3, 2, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (table), 6);
gtk_table_set_row_spacings (GTK_TABLE (table), 6);
gtk_container_set_border_width (GTK_CONTAINER (table), 12);
gtk_widget_show (table);
adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 0,
_("_Red:"), SCALE_WIDTH, 0,
dvals.edges_r, 0.0, 1.0, 0.01, 0.1, 3,
TRUE, 0, 0,
NULL, NULL);
g_signal_connect (adj, "value-changed",
G_CALLBACK (gimp_double_adjustment_update),
&dvals.edges_r);
adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 1,
_("_Green:"), SCALE_WIDTH, 0,
dvals.edges_g, 0.0, 1.0, 0.01, 0.1, 3,
TRUE, 0, 0,
NULL, NULL);
g_signal_connect (adj, "value-changed",
G_CALLBACK (gimp_double_adjustment_update),
&dvals.edges_g);
adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 2,
_("_Blue:"), SCALE_WIDTH, 0,
dvals.edges_b, 0.0, 1.0, 0.01, 0.1, 3,
TRUE, 0, 0,
NULL, NULL);
g_signal_connect (adj, "value-changed",
G_CALLBACK (gimp_double_adjustment_update),
&dvals.edges_b);
label = gtk_label_new_with_mnemonic (_("Sharp Edges"));
gtk_notebook_append_page (GTK_NOTEBOOK (notebook), table, label);
/* Other options tab */
table = gtk_table_new (3, 2, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (table), 6);
gtk_table_set_row_spacings (GTK_TABLE (table), 6);
gtk_container_set_border_width (GTK_CONTAINER (table), 12);
gtk_widget_show (table);
adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 0,
_("_Brightness:"), SCALE_WIDTH, 7,
dvals.brightness, 0.0, 1.0, 0.01, 0.1, 3,
TRUE, 0, 0,
NULL, NULL);
g_signal_connect (adj, "value-changed",
G_CALLBACK (gimp_double_adjustment_update),
&dvals.brightness);
adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 1,
_("Sc_attering:"), SCALE_WIDTH, 7,
dvals.scattering, 0.0, 100.0, 1.0, 10.0, 3,
TRUE, 0, 0,
NULL, NULL);
g_signal_connect (adj, "value-changed",
G_CALLBACK (gimp_double_adjustment_update),
&dvals.scattering);
adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 2,
_("Po_larization:"), SCALE_WIDTH, 7,
dvals.polarization, -1.0, 1.0, 0.02, 0.2, 3,
TRUE, 0, 0,
NULL, NULL);
g_signal_connect (adj, "value-changed",
G_CALLBACK (gimp_double_adjustment_update),
&dvals.polarization);
label = gtk_label_new_with_mnemonic (_("Other Options"));
gtk_notebook_append_page (GTK_NOTEBOOK (notebook), table, label);
/* Done */
gtk_widget_show (dialog);
dialog_update_preview ();
run = (gimp_dialog_run (GIMP_DIALOG (dialog)) == GTK_RESPONSE_OK);
gtk_widget_show (dialog);
return run;
}
static void
dialog_update_preview (void)
{
double left, right, bottom, top;
double px, py;
double dx, dy;
GimpRGB rgb;
int x, y;
guchar *p;
left = -5.0;
right = 5.0;
bottom = -5.0;
top = 5.0;
dx = (right - left) / (PREVIEW_WIDTH - 1);
dy = (bottom - top) / (PREVIEW_HEIGHT - 1);
py = top;
p = dint.preview_buffer;
for (y = 0; y < PREVIEW_HEIGHT; y++)
{
px = left;
for (x = 0; x < PREVIEW_WIDTH; x++)
{
diff_diffract (px, py, &rgb);
*p++ = 255.0 * rgb.r;
*p++ = 255.0 * rgb.g;
*p++ = 255.0 * rgb.b;
px += dx;
}
if ((y % 10) == 0)
{
gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (dint.progress),
(gdouble) y /
(gdouble) (PREVIEW_HEIGHT - 1));
while (gtk_events_pending ())
gtk_main_iteration ();
}
py += dy;
}
gimp_preview_area_draw (GIMP_PREVIEW_AREA (dint.preview),
0, 0, PREVIEW_WIDTH, PREVIEW_HEIGHT,
GIMP_RGB_IMAGE,
dint.preview_buffer,
3 * PREVIEW_WIDTH);
gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (dint.progress), 0.0);
}
static void
dialog_update_callback (GtkWidget *widget,
gpointer data)
{
dialog_update_preview ();
}
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