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Gimp/plug-ins/common/plasma.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

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/*
* This is a plugin for the GIMP.
*
* Copyright (C) 1996 Stephen Norris
*
* 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 plasma fractal images. The algorithm is losely
* based on a description of the fractint algorithm, but completely
* re-implemented because the fractint code was too ugly to read :)
*
* Please send any patches or suggestions to me: srn@flibble.cs.su.oz.au.
*/
/*
* TODO:
* - The progress bar sucks.
* - It writes some pixels more than once.
*/
/* Version 1.01 */
/*
* Ported to GIMP Plug-in API 1.0
* by Eiichi Takamori <taka@ma1.seikyou.ne.jp>
*
* $Id$
*
* A few functions names and their order are changed :)
* Plasma implementation almost hasn't been changed.
*
* Feel free to correct my WRONG English, or to modify Plug-in Path,
* and so on. ;-)
*
* Version 1.02
*
* May 2000
* tim copperfield [timecop@japan.co.jp]
* Added dynamic preview mode.
*
*/
#include "config.h"
#include <string.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "libgimp/stdplugins-intl.h"
/* Some useful macros */
#define PLUG_IN_PROC "plug-in-plasma"
#define PLUG_IN_BINARY "plasma"
#define SCALE_WIDTH 48
#define TILE_CACHE_SIZE 32
typedef struct
{
guint32 seed;
gdouble turbulence;
gboolean random_seed;
gboolean preview;
} PlasmaValues;
/*
* Function prototypes.
*/
static void query (void);
static void run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals);
static gboolean plasma_dialog (GimpDrawable *drawable);
static void plasma_seed_changed_callback (GimpDrawable *drawable,
gpointer data);
static void plasma (GimpDrawable *drawable,
gboolean preview_mode);
static void random_rgb (GRand *gr,
guchar *pixel);
static void add_random (GRand *gr,
guchar *pixel,
gint amount);
static GimpPixelFetcher *init_plasma (GimpDrawable *drawable,
gboolean preview_mode,
GRand *gr);
static void end_plasma (GimpDrawable *drawable,
GimpPixelFetcher *pft,
GRand *gr);
static void get_pixel (GimpPixelFetcher *pft,
gint x,
gint y,
guchar *pixel);
static void put_pixel (GimpPixelFetcher *pft,
gint x,
gint y,
guchar *pixel);
static gboolean do_plasma (GimpPixelFetcher *pft,
gint x1,
gint y1,
gint x2,
gint y2,
gint depth,
gint scale_depth,
GRand *gr);
/***** Local vars *****/
GimpPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run, /* run_proc */
};
static PlasmaValues pvals =
{
0, /* seed */
1.0, /* turbulence */
FALSE, /* Use random seed */
TRUE /* preview */
};
/*
* Some globals to save passing too many paramaters that don't change.
*/
static GtkWidget *preview;
static guchar *preview_buffer;
static gint preview_width, preview_height;
static gint ix1, iy1, ix2, iy2; /* Selected image size. */
static gint bpp, alpha;
static gboolean has_alpha;
static glong max_progress, progress;
/***** 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_INT32, "seed", "Random seed" },
{ GIMP_PDB_FLOAT, "turbulence", "Turbulence of plasma" }
};
gimp_install_procedure (PLUG_IN_PROC,
"Create a plasma cloud like image on the "
"specified drawable",
"More help",
"Stephen Norris & (ported to 1.0 by) Eiichi Takamori",
"Stephen Norris",
"May 2000",
N_("_Plasma..."),
"RGB*, GRAY*",
GIMP_PLUGIN,
G_N_ELEMENTS (args), 0,
args, NULL);
gimp_plugin_menu_register (PLUG_IN_PROC, "<Image>/Filters/Render/Clouds");
}
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;
INIT_I18N ();
*nreturn_vals = 1;
*return_vals = values;
values[0].type = GIMP_PDB_STATUS;
values[0].data.d_status = status;
/* Get the specified drawable */
drawable = gimp_drawable_get (param[2].data.d_drawable);
switch (run_mode)
{
case GIMP_RUN_INTERACTIVE:
/* Possibly retrieve data */
gimp_get_data (PLUG_IN_PROC, &pvals);
/* First acquire information with a dialog */
if (! plasma_dialog (drawable))
{
gimp_drawable_detach (drawable);
return;
}
break;
case GIMP_RUN_NONINTERACTIVE:
/* Make sure all the arguments are there! */
if (nparams != 5)
{
status = GIMP_PDB_CALLING_ERROR;
}
else
{
pvals.seed = (guint32) param[3].data.d_int32;
pvals.turbulence = (gdouble) param[4].data.d_float;
if (pvals.turbulence <= 0)
status = GIMP_PDB_CALLING_ERROR;
}
break;
case GIMP_RUN_WITH_LAST_VALS:
/* Possibly retrieve data */
gimp_get_data (PLUG_IN_PROC, &pvals);
if (pvals.random_seed)
pvals.seed = g_random_int ();
break;
default:
break;
}
if (status == GIMP_PDB_SUCCESS)
{
/* Make sure that the drawable is gray or RGB color */
if (gimp_drawable_is_rgb (drawable->drawable_id) ||
gimp_drawable_is_gray (drawable->drawable_id))
{
gimp_progress_init (_("Plasma..."));
gimp_tile_cache_ntiles (TILE_CACHE_SIZE);
plasma (drawable, FALSE);
if (run_mode != GIMP_RUN_NONINTERACTIVE)
gimp_displays_flush ();
/* Store data */
if (run_mode == GIMP_RUN_INTERACTIVE ||
(run_mode == GIMP_RUN_WITH_LAST_VALS))
gimp_set_data (PLUG_IN_PROC, &pvals, sizeof (PlasmaValues));
}
else
{
/* gimp_message ("plasma: cannot operate on indexed color images"); */
status = GIMP_PDB_EXECUTION_ERROR;
}
}
values[0].data.d_status = status;
gimp_drawable_detach (drawable);
}
static gboolean
plasma_dialog (GimpDrawable *drawable)
{
GtkWidget *dialog;
GtkWidget *main_vbox;
GtkWidget *label;
GtkWidget *table;
GtkWidget *seed;
GtkObject *adj;
gboolean run;
gimp_ui_init (PLUG_IN_BINARY, TRUE);
dialog = gimp_dialog_new (_("Plasma"), 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_aspect_preview_new (drawable, &pvals.preview);
gtk_box_pack_start_defaults (GTK_BOX (main_vbox), preview);
gtk_widget_show (preview);
g_signal_connect_swapped (preview, "invalidated",
G_CALLBACK (plasma_seed_changed_callback),
drawable);
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);
seed = gimp_random_seed_new (&pvals.seed, &pvals.random_seed);
label = gimp_table_attach_aligned (GTK_TABLE (table), 0, 0,
_("Random _seed:"), 0.0, 0.5,
seed, 2, TRUE);
gtk_label_set_mnemonic_widget (GTK_LABEL (label),
GIMP_RANDOM_SEED_SPINBUTTON (seed));
g_signal_connect_swapped (GIMP_RANDOM_SEED_SPINBUTTON_ADJ (seed),
"value-changed",
G_CALLBACK (gimp_preview_invalidate),
preview);
adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 1,
_("T_urbulence:"), SCALE_WIDTH, 0,
pvals.turbulence,
0.1, 7.0, 0.1, 1.0, 1,
TRUE, 0, 0,
NULL, NULL);
g_signal_connect (adj, "value-changed",
G_CALLBACK (gimp_double_adjustment_update),
&pvals.turbulence);
g_signal_connect_swapped (adj, "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
plasma_seed_changed_callback (GimpDrawable *drawable,
gpointer data)
{
plasma (drawable, TRUE);
}
/*
* The setup function.
*/
static void
plasma (GimpDrawable *drawable,
gboolean preview_mode)
{
GimpPixelFetcher *pft;
gint depth;
GRand *gr;
gr = g_rand_new ();
pft = init_plasma (drawable, preview_mode, gr);
if (ix1 != ix2 && iy1 != iy2)
{
/*
* This first time only puts in the seed pixels - one in each
* corner, and one in the center of each edge, plus one in the
* center of the image.
*/
do_plasma (pft, ix1, iy1, ix2 - 1, iy2 - 1, -1, 0, gr);
/*
* Now we recurse through the images, going further each time.
*/
depth = 1;
while (!do_plasma (pft, ix1, iy1, ix2 - 1, iy2 - 1, depth, 0, gr))
{
depth++;
}
}
end_plasma (drawable, pft, gr);
}
static GimpPixelFetcher*
init_plasma (GimpDrawable *drawable,
gboolean preview_mode,
GRand *gr)
{
GimpPixelFetcher *pft;
g_rand_set_seed (gr, pvals.seed);
if (preview_mode)
{
ix1 = iy1 = 0;
gimp_preview_get_size (GIMP_PREVIEW (preview),
&preview_width, &preview_height);
ix2 = preview_width;
iy2 = preview_height;
preview_buffer = g_new (guchar, ix2 * iy2 * drawable->bpp);
pft = NULL;
}
else
{
gimp_drawable_mask_bounds (drawable->drawable_id,
&ix1, &iy1, &ix2, &iy2);
pft = gimp_pixel_fetcher_new (drawable, TRUE);
}
bpp = drawable->bpp;
has_alpha = gimp_drawable_has_alpha (drawable->drawable_id);
alpha = (has_alpha) ? bpp - 1 : bpp;
progress = 0;
max_progress = (ix2 - ix1) * (iy2 - iy1);
return pft;
}
static void
end_plasma (GimpDrawable *drawable,
GimpPixelFetcher *pft,
GRand *gr)
{
if (pft)
{
gimp_pixel_fetcher_destroy (pft);
gimp_drawable_flush (drawable);
gimp_drawable_merge_shadow (drawable->drawable_id, TRUE);
gimp_drawable_update (drawable->drawable_id,
ix1, iy1, ix2 - ix1, iy2 - iy1);
}
else
{
gimp_preview_draw_buffer (GIMP_PREVIEW (preview),
preview_buffer, preview_width * bpp);
g_free (preview_buffer);
}
g_rand_free (gr);
}
static void
get_pixel (GimpPixelFetcher *pft,
gint x,
gint y,
guchar *pixel)
{
if (pft)
{
gimp_pixel_fetcher_get_pixel (pft, x, y, pixel);
}
else
{
memcpy (pixel, preview_buffer + (y * preview_width + x) * bpp, bpp);
}
}
static void
put_pixel (GimpPixelFetcher *pft,
gint x,
gint y,
guchar *pixel)
{
if (pft)
{
gimp_pixel_fetcher_put_pixel (pft, x, y, pixel);
progress++;
}
else
{
memcpy (preview_buffer + (y * preview_width + x) * bpp, pixel, bpp);
}
}
static void
average_pixel (guchar *dest,
const guchar *src1,
const guchar *src2,
gint bpp)
{
for (; bpp; bpp--)
{
*dest++ = (*src1++ + *src2++) / 2;
}
}
static void
random_rgb (GRand *gr,
guchar *pixel)
{
gint i;
for (i = 0; i < alpha; i++)
pixel[i] = g_rand_int_range (gr, 0, 256);
if (has_alpha)
pixel[alpha] = 255;
}
static void
add_random (GRand *gr,
guchar *pixel,
gint amount)
{
amount /= 2;
if (amount > 0)
{
gint i, tmp;
for (i = 0; i < alpha; i++)
{
tmp = pixel[i] + g_rand_int_range (gr, - amount, amount);
pixel[i] = CLAMP0255 (tmp);
}
}
}
static gboolean
do_plasma (GimpPixelFetcher *pft,
gint x1,
gint y1,
gint x2,
gint y2,
gint depth,
gint scale_depth,
GRand *gr)
{
guchar tl[4], ml[4], bl[4], mt[4], mm[4], mb[4], tr[4], mr[4], br[4];
guchar tmp[4];
gint xm, ym;
static gint count = 0;
xm = (x1 + x2) / 2;
ym = (y1 + y2) / 2;
/* Initial pass through - no averaging. */
if (depth == -1)
{
random_rgb (gr, tl);
put_pixel (pft, x1, y1, tl);
random_rgb (gr, tr);
put_pixel (pft, x2, y1, tr);
random_rgb (gr, bl);
put_pixel (pft, x1, y2, bl);
random_rgb (gr, br);
put_pixel (pft, x2, y2, br);
random_rgb (gr, mm);
put_pixel (pft, xm, ym, mm);
random_rgb (gr, ml);
put_pixel (pft, x1, ym, ml);
random_rgb (gr, mr);
put_pixel (pft, x2, ym, mr);
random_rgb (gr, mt);
put_pixel (pft, xm, y1, mt);
random_rgb (gr, mb);
put_pixel (pft, xm, y2, mb);
return FALSE;
}
/*
* Some later pass, at the bottom of this pass,
* with averaging at this depth.
*/
if (depth == 0)
{
gint ran;
if (x1 == x2 && y1 == y2)
{
return FALSE;
}
get_pixel (pft, x1, y1, tl);
get_pixel (pft, x1, y2, bl);
get_pixel (pft, x2, y1, tr);
get_pixel (pft, x2, y2, br);
ran = (gint) ((256.0 / (2.0 * scale_depth)) * pvals.turbulence);
if (xm != x1 || xm != x2)
{
/* Left. */
average_pixel (ml, tl, bl, bpp);
add_random (gr, ml, ran);
put_pixel (pft, x1, ym, ml);
if (x1 != x2)
{
/* Right. */
average_pixel (mr, tr, br, bpp);
add_random (gr, mr, ran);
put_pixel (pft, x2, ym, mr);
}
}
if (ym != y1 || ym != y2)
{
if (x1 != xm || ym != y2)
{
/* Bottom. */
average_pixel (mb, bl, br, bpp);
add_random (gr, mb, ran);
put_pixel (pft, xm, y2, mb);
}
if (y1 != y2)
{
/* Top. */
average_pixel (mt, tl, tr, bpp);
add_random (gr, mt, ran);
put_pixel (pft, xm, y1, mt);
}
}
if (y1 != y2 || x1 != x2)
{
/* Middle pixel. */
average_pixel (mm, tl, br, bpp);
average_pixel (tmp, bl, tr, bpp);
average_pixel (mm, mm, tmp, bpp);
add_random (gr, mm, ran);
put_pixel (pft, xm, ym, mm);
}
count++;
if (!(count % 2000) && pft)
{
gimp_progress_update ((gdouble) progress / (gdouble) max_progress);
}
return x2 - x1 < 3 && y2 - y1 < 3;
}
if (x1 < x2 || y1 < y2)
{
/* Top left. */
do_plasma (pft, x1, y1, xm, ym, depth - 1, scale_depth + 1, gr);
/* Bottom left. */
do_plasma (pft, x1, ym, xm ,y2, depth - 1, scale_depth + 1, gr);
/* Top right. */
do_plasma (pft, xm, y1, x2 , ym, depth - 1, scale_depth + 1, gr);
/* Bottom right. */
return do_plasma (pft, xm, ym, x2, y2, depth - 1, scale_depth + 1, gr);
}
else
{
return TRUE;
}
}
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