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gimp/plug-ins/common/neon.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

783 lines
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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* 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.
*/
/* Neon filter for the GIMP for BIPS
* -Spencer Kimball
*
* This filter works in a manner similar to the "edge"
* plug-in, but uses the first derivative of the gaussian
* operator to achieve resolution independence. The IIR
* method of calculating the effect is utilized to keep
* the processing time constant between large and small
* standard deviations.
*/
#include "config.h"
#include <string.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "libgimp/stdplugins-intl.h"
#define PLUG_IN_PROC "plug-in-neon"
#define PLUG_IN_BINARY "neon"
typedef struct
{
gdouble radius;
gdouble amount;
} NeonVals;
/*
* Function prototypes.
*/
static void query (void);
static void run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals);
static void neon (GimpDrawable *drawable,
gdouble radius,
gdouble amount,
GimpPreview *preview);
static gboolean neon_dialog (GimpDrawable *drawable);
static void neon_preview_update (GimpPreview *preview);
/*
* Gaussian operator helper functions
*/
static void find_constants (gdouble n_p[],
gdouble n_m[],
gdouble d_p[],
gdouble d_m[],
gdouble bd_p[],
gdouble bd_m[],
gdouble std_dev);
static void transfer_pixels (gdouble *src1,
gdouble *src2,
guchar *dest,
gint bytes,
gint width);
static void combine_to_gradient (guchar *dest,
guchar *src2,
gint bytes,
gint width,
gdouble amount);
/***** Local vars *****/
GimpPlugInInfo PLUG_IN_INFO =
{
NULL, /* init */
NULL, /* quit */
query, /* query */
run, /* run */
};
static NeonVals evals =
{
5.0, /* radius */
0.0, /* amount */
};
/***** Functions *****/
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, "radius", "Radius of neon effect (in pixels)" },
{ GIMP_PDB_FLOAT, "amount", "Effect enhancement variable (0.0 - 1.0)" },
};
gchar *help_string =
"This filter works in a manner similar to the edge"
"plug-in, but uses the first derivative of the gaussian"
"operator to achieve resolution independence. The IIR"
"method of calculating the effect is utilized to keep"
"the processing time constant between large and small"
"standard deviations.";
gimp_install_procedure (PLUG_IN_PROC,
"Resolution independent edge detection",
help_string,
"Spencer Kimball",
"Bit Specialists, Inc.",
"2002",
N_("_Neon..."),
"RGB*, GRAY*",
GIMP_PLUGIN,
G_N_ELEMENTS (args), 0,
args, NULL);
gimp_plugin_menu_register (PLUG_IN_PROC, "<Image>/Filters/Edge-Detect");
}
static void
run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals)
{
static GimpParam values[1];
GimpRunMode run_mode;
GimpDrawable *drawable;
GimpPDBStatusType status = GIMP_PDB_SUCCESS;
run_mode = param[0].data.d_int32;
/* Get the specified drawable */
drawable = gimp_drawable_get (param[2].data.d_drawable);
/* set the tile cache size so that the gaussian blur works well */
gimp_tile_cache_ntiles (2 * (MAX (drawable->ntile_rows, drawable->ntile_cols)));
*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, &evals);
/* First acquire information with a dialog */
if (! neon_dialog (drawable))
return;
break;
case GIMP_RUN_NONINTERACTIVE:
/* Make sure all the arguments are there! */
if (nparams != 5)
status = GIMP_PDB_CALLING_ERROR;
if (status == GIMP_PDB_SUCCESS)
{
evals.radius = param[3].data.d_float;
evals.amount = param[4].data.d_float;
}
break;
case GIMP_RUN_WITH_LAST_VALS:
/* Possibly retrieve data */
gimp_get_data (PLUG_IN_PROC, &evals);
break;
default:
break;
}
/* make sure the drawable exist and is not indexed */
if (gimp_drawable_is_rgb (drawable->drawable_id) ||
gimp_drawable_is_gray (drawable->drawable_id))
{
gimp_progress_init (_("Neon..."));
/* run the neon effect */
neon (drawable, evals.radius, evals.amount, NULL);
if (run_mode != GIMP_RUN_NONINTERACTIVE)
gimp_displays_flush ();
/* Store data */
if (run_mode == GIMP_RUN_INTERACTIVE)
gimp_set_data (PLUG_IN_PROC, &evals, sizeof (NeonVals));
}
else
{
g_message (_("Cannot operate on indexed color images."));
status = GIMP_PDB_EXECUTION_ERROR;
}
values[0].data.d_status = status;
gimp_drawable_detach (drawable);
}
/**********************************************/
/* Neon main */
/**********************************************/
static void
neon (GimpDrawable *drawable,
gdouble radius,
gdouble amount,
GimpPreview *preview)
{
GimpPixelRgn src_rgn, dest_rgn;
gint width, height;
gint bytes, bpp;
gboolean has_alpha;
guchar *dest;
guchar *src, *src2, *sp_p, *sp_m;
gdouble n_p[5], n_m[5];
gdouble d_p[5], d_m[5];
gdouble bd_p[5], bd_m[5];
gdouble *val_p, *val_m, *vp, *vm;
gint x1, y1, x2, y2;
gint i, j;
gint row, col, b;
gint terms;
gint progress = 0, max_progress = 1;
gint initial_p[4];
gint initial_m[4];
gdouble std_dev;
guchar *preview_buffer1 = NULL;
guchar *preview_buffer2 = NULL;
if (preview)
{
gimp_preview_get_position (preview, &x1, &y1);
gimp_preview_get_size (preview, &width, &height);
x2 = x1 + width;
y2 = y1 + height;
}
else
{
gimp_drawable_mask_bounds (drawable->drawable_id, &x1, &y1, &x2, &y2);
width = (x2 - x1);
height = (y2 - y1);
}
if (radius < 1.0)
return;
bytes = drawable->bpp;
bpp = bytes;
has_alpha = gimp_drawable_has_alpha(drawable->drawable_id);
if (has_alpha)
bpp--;
val_p = g_new (gdouble, MAX (width, height) * bytes);
val_m = g_new (gdouble, MAX (width, height) * bytes);
src = g_new (guchar, MAX (width, height) * bytes);
src2 = g_new (guchar, MAX (width, height) * bytes);
dest = g_new (guchar, MAX (width, height) * bytes);
gimp_pixel_rgn_init (&src_rgn, drawable,
0, 0, drawable->width, drawable->height, FALSE, FALSE);
if (preview)
{
preview_buffer1 = g_new (guchar, width * height * bytes);
preview_buffer2 = g_new (guchar, width * height * bytes);
}
else
{
gimp_pixel_rgn_init (&dest_rgn, drawable,
0, 0, drawable->width, drawable->height, TRUE, TRUE);
progress = 0;
max_progress = (radius < 1.0 ) ? 0 : width * height * radius * 2;
}
/* First the vertical pass */
radius = fabs (radius) + 1.0;
std_dev = sqrt (-(radius * radius) / (2 * log (1.0 / 255.0)));
/* derive the constants for calculating the gaussian from the std dev */
find_constants (n_p, n_m, d_p, d_m, bd_p, bd_m, std_dev);
for (col = 0; col < width; col++)
{
memset (val_p, 0, height * bytes * sizeof (gdouble));
memset (val_m, 0, height * bytes * sizeof (gdouble));
gimp_pixel_rgn_get_col (&src_rgn, src, col + x1, y1, (y2 - y1));
sp_p = src;
sp_m = src + (height - 1) * bytes;
vp = val_p;
vm = val_m + (height - 1) * bytes;
/* Set up the first vals */
for (i = 0; i < bytes; i++)
{
initial_p[i] = sp_p[i];
initial_m[i] = sp_m[i];
}
for (row = 0; row < height; row++)
{
gdouble *vpptr, *vmptr;
terms = (row < 4) ? row : 4;
for (b = 0; b < bpp; b++)
{
vpptr = vp + b; vmptr = vm + b;
for (i = 0; i <= terms; i++)
{
*vpptr += n_p[i] * sp_p[(-i * bytes) + b] -
d_p[i] * vp[(-i * bytes) + b];
*vmptr += n_m[i] * sp_m[(i * bytes) + b] -
d_m[i] * vm[(i * bytes) + b];
}
for (j = i; j <= 4; j++)
{
*vpptr += (n_p[j] - bd_p[j]) * initial_p[b];
*vmptr += (n_m[j] - bd_m[j]) * initial_m[b];
}
}
if (has_alpha)
{
vp[bpp] = sp_p[bpp];
vm[bpp] = sp_m[bpp];
}
sp_p += bytes;
sp_m -= bytes;
vp += bytes;
vm -= bytes;
}
transfer_pixels (val_p, val_m, dest, bytes, height);
if (preview)
{
for (row = 0 ; row < height ; row++)
memcpy (preview_buffer1 + (row * width + col) * bytes,
dest + bytes * row,
bytes);
}
else
{
gimp_pixel_rgn_set_col (&dest_rgn, dest, col + x1, y1, (y2 - y1));
progress += height * radius;
if ((col % 20) == 0)
gimp_progress_update ((double) progress / (double) max_progress);
}
}
/* Now the horizontal pass */
gimp_pixel_rgn_init (&src_rgn, drawable,
0, 0, drawable->width, drawable->height, FALSE, FALSE);
for (row = 0; row < height; row++)
{
memset (val_p, 0, width * bytes * sizeof (gdouble));
memset (val_m, 0, width * bytes * sizeof (gdouble));
gimp_pixel_rgn_get_row (&src_rgn, src, x1, row + y1, (x2 - x1));
if (preview)
{
memcpy (src2,
preview_buffer1 + row * width * bytes,
width * bytes);
}
else
{
gimp_pixel_rgn_get_row (&dest_rgn, src2, x1, row + y1, (x2 - x1));
}
sp_p = src;
sp_m = src + (width - 1) * bytes;
vp = val_p;
vm = val_m + (width - 1) * bytes;
/* Set up the first vals */
for (i = 0; i < bytes; i++)
{
initial_p[i] = sp_p[i];
initial_m[i] = sp_m[i];
}
for (col = 0; col < width; col++)
{
gdouble *vpptr, *vmptr;
terms = (col < 4) ? col : 4;
for (b = 0; b < bpp; b++)
{
vpptr = vp + b; vmptr = vm + b;
for (i = 0; i <= terms; i++)
{
*vpptr += n_p[i] * sp_p[(-i * bytes) + b] -
d_p[i] * vp[(-i * bytes) + b];
*vmptr += n_m[i] * sp_m[(i * bytes) + b] -
d_m[i] * vm[(i * bytes) + b];
}
for (j = i; j <= 4; j++)
{
*vpptr += (n_p[j] - bd_p[j]) * initial_p[b];
*vmptr += (n_m[j] - bd_m[j]) * initial_m[b];
}
}
if (has_alpha)
{
vp[bpp] = sp_p[bpp];
vm[bpp] = sp_m[bpp];
}
sp_p += bytes;
sp_m -= bytes;
vp += bytes;
vm -= bytes;
}
transfer_pixels (val_p, val_m, dest, bytes, width);
combine_to_gradient (dest, src2, bytes, width, amount);
if (preview)
{
memcpy (preview_buffer2 + row * width * bytes,
dest,
width * bytes);
}
else
{
gimp_pixel_rgn_set_row (&dest_rgn, dest, x1, row + y1, (x2 - x1));
progress += width * radius;
if ((row % 20) == 0)
gimp_progress_update ((double) progress / (double) max_progress);
}
}
if (preview)
{
gimp_preview_draw_buffer (preview, preview_buffer2, width * bytes);
g_free (preview_buffer1);
g_free (preview_buffer2);
}
else
{
/* now, merge horizontal and vertical into a magnitude */
gimp_pixel_rgn_init (&src_rgn, drawable,
0, 0, drawable->width, drawable->height,
FALSE, TRUE);
/* merge the shadow, update the drawable */
gimp_drawable_flush (drawable);
gimp_drawable_merge_shadow (drawable->drawable_id, TRUE);
gimp_drawable_update (drawable->drawable_id,
x1, y1, (x2 - x1), (y2 - y1));
}
/* free up buffers */
g_free (val_p);
g_free (val_m);
g_free (src);
g_free (dest);
}
static void
transfer_pixels (gdouble *src1,
gdouble *src2,
guchar *dest,
gint bytes,
gint width)
{
gint b;
gint bend = bytes * width;
gdouble sum;
for (b = 0; b < bend; b++)
{
sum = *src1++ + *src2++;
if (sum > 255)
sum = 255;
else if (sum < 0)
sum = 0;
*dest++ = (guchar) sum;
}
}
static void
combine_to_gradient (guchar *dest,
guchar *src2,
gint bytes,
gint width,
gdouble amount)
{
gint b;
gint bend = bytes * width;
gdouble h, v;
gdouble sum;
gdouble scale = (1.0 + 9.0 * amount);
for (b = 0; b < bend; b++)
{
/* scale result */
h = *src2++;
v = *dest;
sum = sqrt (h*h + v*v) * scale;
if (sum > 255)
sum = 255;
else if (sum < 0)
sum = 0;
*dest++ = (guchar) sum;
}
}
static void
find_constants (gdouble n_p[],
gdouble n_m[],
gdouble d_p[],
gdouble d_m[],
gdouble bd_p[],
gdouble bd_m[],
gdouble std_dev)
{
gdouble a0, a1, b0, b1, c0, c1, w0, w1;
gdouble w0n, w1n, cos0, cos1, sin0, sin1, b0n, b1n;
gdouble div;
/* coefficients for Gaussian 1st derivative filter */
a0 = 0.6472;
a1 = 4.531;
b0 = 1.527;
b1 = 1.516;
c0 = -0.6494;
c1 = -0.9557;
w0 = 0.6719;
w1 = 2.072;
/* coefficients for Gaussian filter */
/*
a0 = 1.68;
a1 = 3.735;
b0 = 1.783;
b1 = 1.723;
c0 = -0.6803;
c1 = -0.2598;
w0 = 0.6318;
w1 = 1.997;
*/
/* coefficients for filter */
w0n = w0 / std_dev;
w1n = w1 / std_dev;
cos0 = cos (w0n);
cos1 = cos (w1n);
sin0 = sin (w0n);
sin1 = sin (w1n);
b0n = b0 / std_dev;
b1n = b1 / std_dev;
div = sqrt (2 * G_PI) * std_dev;
/*
a0 = a0 / div;
a1 = a1 / div;
c0 = c0 / div;
c1 = c1 / div;
*/
n_p[4] = 0.0;
n_p[3] = exp (-b1n - 2 * b0n) * (c1 * sin1 - cos1 * c0) + exp (-b0n - 2 * b1n) * (a1 * sin0 - cos0 * a0);
n_p[2] = 2 * exp (-b0n - b1n) * ((a0 + c0) * cos1 * cos0 - cos1 * a1 * sin0 - cos0 * c1 * sin1) + c0 * exp (-2 * b0n) + a0 * exp (-2 * b1n);
n_p[1] = exp (-b1n) * (c1 * sin1 - (c0 + 2 * a0) * cos1) + exp (-b0n) * (a1 * sin0 - (2 * c0 + a0) * cos0);
n_p[0] = a0 + c0;
d_p[4] = exp (-2 * b0n - 2 * b1n);
d_p[3] = -2 * cos0 * exp (-b0n - 2 * b1n) - 2 * cos1 * exp (-b1n - 2 * b0n);
d_p[2] = 4 * cos1 * cos0 * exp (-b0n - b1n) + exp (-2 * b1n) + exp (-2 * b0n);
d_p[1] = -2 * exp (-b1n) * cos1 - 2 * exp (-b0n) * cos0;
d_p[0] = 0.0;
/* For first derivative */
n_m[4] = d_p[4] * n_p[0] - n_p[4];
n_m[3] = d_p[3] * n_p[0] - n_p[3];
n_m[2] = d_p[2] * n_p[0] - n_p[2];
n_m[1] = d_p[1] * n_p[0] - n_p[1];
n_m[0] = 0.0;
/* For gaussian operator */
/*
n_m[4] = n_p[4] - d_p[4] * n_p[0];
n_m[3] = n_p[3] - d_p[3] * n_p[0];
n_m[2] = n_p[2] - d_p[2] * n_p[0];
n_m[1] = n_p[1] - d_p[1] * n_p[0];
n_m[0] = 0.0;
*/
d_m[4] = d_p[4];
d_m[3] = d_p[3];
d_m[2] = d_p[2];
d_m[1] = d_p[1];
d_m[0] = d_p[0];
{
gint i;
gdouble sum_n_p, sum_n_m, sum_d;
gdouble a, b;
/*
for (i = 0; i <=4; i++)
{
fprintf (stderr, "n_p[%d] = %f\n", i, n_p[i]);
fprintf (stderr, "n_m[%d] = %f\n", i, n_m[i]);
fprintf (stderr, "d_p[%d] = %f\n", i, d_p[i]);
}
*/
sum_n_p = 0.0;
sum_n_m = 0.0;
sum_d = 0.0;
for (i = 0; i <= 4; i++)
{
sum_n_p += n_p[i];
sum_n_m += n_m[i];
sum_d += d_p[i];
}
a = sum_n_p / (1 + sum_d);
b = sum_n_m / (1 + sum_d);
for (i = 0; i <= 4; i++)
{
bd_p[i] = d_p[i] * a;
bd_m[i] = d_m[i] * b;
}
}
}
/*******************************************************/
/* Dialog */
/*******************************************************/
static gboolean
neon_dialog (GimpDrawable *drawable)
{
GtkWidget *dialog;
GtkWidget *main_vbox;
GtkWidget *preview;
GtkWidget *table;
GtkObject *scale_data;
gboolean run;
gimp_ui_init (PLUG_IN_BINARY, FALSE);
dialog = gimp_dialog_new (_("Neon Detection"), 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 (GTK_BOX (main_vbox), preview, TRUE, TRUE, 0);
gtk_widget_show (preview);
g_signal_connect (preview, "invalidated",
G_CALLBACK (neon_preview_update),
NULL);
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);
gtk_widget_show (table);
/* Label, scale, entry for evals.radius */
scale_data = gimp_scale_entry_new (GTK_TABLE (table), 0, 0,
_("_Radius:"), 100, 8,
evals.radius, 0.0, 64.0, 1, 10, 2,
FALSE, 0.0,
8 * MAX (drawable->width, drawable->height),
NULL, NULL);
g_signal_connect (scale_data, "value-changed",
G_CALLBACK (gimp_double_adjustment_update),
&evals.radius);
g_signal_connect_swapped (scale_data, "value-changed",
G_CALLBACK (gimp_preview_invalidate),
preview);
/* Label, scale, entry for evals.amount */
scale_data = gimp_scale_entry_new (GTK_TABLE (table), 0, 1,
_("_Amount:"), 100, 8,
evals.amount, 0.0, 1.0, 0.01, 0.1, 2,
TRUE, 0, 0,
NULL, NULL);
g_signal_connect (scale_data, "value-changed",
G_CALLBACK (gimp_double_adjustment_update),
&evals.amount);
g_signal_connect_swapped (scale_data, "value-changed",
G_CALLBACK (gimp_preview_invalidate),
preview);
gtk_widget_show (dialog);
run = (gimp_dialog_run (GIMP_DIALOG (dialog)) == GTK_RESPONSE_OK);
gtk_widget_destroy (dialog);
return run;
}
static void
neon_preview_update (GimpPreview *preview)
{
neon (GIMP_DRAWABLE_PREVIEW (preview)->drawable,
evals.radius,
evals.amount,
preview);
}
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