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gimp/plug-ins/struc/struc.c

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/*
* This is the Struc plug-in for the GIMP 0.99
* Version 1.01
*
* Copyright (C) 1997 Karl-Johan Andersson (t96kja@student.tdb.uu.se)
*
* 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.
*
*/
/* Don't ask me why its called "Struc". The first .c-file
* just happend to be called struc.c
*
* Some code for the dialog was taken from Motion Blur plug-in for
* GIMP 0.99 by Daniel Skarda (0rfelyus@atrey.karlin.mff.cuni.cz)
*
* Please send any comments or suggestions to me,
* Karl-Johan Andersson (t96kja@student.tdb.uu.se)
*
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <gtk/gtk.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "libgimp/stdplugins-intl.h"
#include "struc.h"
/* --- Typedefs --- */
enum
{
TOP_RIGHT,
TOP_LEFT,
BOTTOM_LEFT,
BOTTOM_RIGHT
};
typedef struct
{
gint direction;
gint depth;
} StrucValues;
typedef struct
{
gint run;
} StructInterface;
/* --- Declare local functions --- */
static void query (void);
static void run (gchar *name,
gint nparams,
GParam *param,
gint *nreturn_vals,
GParam **return_vals);
static gint struc_dialog (void);
static void struc_ok_callback (GtkWidget *widget,
gpointer data);
static void strucpi (GDrawable *drawable);
/* --- Variables --- */
GPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run, /* run_proc */
};
static StrucValues svals =
{
0, /* direction*/
4 /* depth */
};
static StructInterface s_int =
{
FALSE /* run */
};
/* --- Functions --- */
MAIN ()
static void
query (void)
{
static GParamDef args[] =
{
{ PARAM_INT32, "run_mode", "Interactive, non-interactive" },
{ PARAM_IMAGE, "image", "Input image (unused)" },
{ PARAM_DRAWABLE, "drawable", "Input drawable" },
{ PARAM_INT32, "direction", "Light direction (0 - 3)" },
{ PARAM_INT32, "depth", "Texture depth (1 - 50)" },
};
static GParamDef *return_vals = NULL;
static int nargs = sizeof (args) / sizeof (args[0]);
static int nreturn_vals = 0;
INIT_I18N();
gimp_install_procedure ("plug_in_apply_canvas",
_("Adds a canvas texture map to the picture"),
_("This function applies a canvas texture map to the drawable."),
"Karl-Johan Andersson", /* Author */
"Karl-Johan Andersson", /* Copyright */
"1997",
N_("<Image>/Filters/Artistic/Apply Canvas..."),
"RGB*, GRAY*",
PROC_PLUG_IN,
nargs, nreturn_vals,
args, return_vals);
}
static void
run (gchar *name,
gint nparams,
GParam *param,
gint *nreturn_vals,
GParam **return_vals)
{
static GParam values[1];
GDrawable *drawable;
GRunModeType run_mode;
GStatusType status = STATUS_SUCCESS;
run_mode = param[0].data.d_int32;
*nreturn_vals = 1;
*return_vals = values;
values[0].type = PARAM_STATUS;
values[0].data.d_status = status;
if (run_mode == RUN_INTERACTIVE)
{
INIT_I18N_UI();
}
else
{
INIT_I18N();
}
/* Get the specified drawable */
drawable = gimp_drawable_get (param[2].data.d_drawable);
switch (run_mode)
{
case RUN_INTERACTIVE:
/* Possibly retrieve data */
gimp_get_data ("plug_in_struc", &svals);
/* First acquire information with a dialog */
if (! struc_dialog ())
{
gimp_drawable_detach (drawable);
return;
}
break;
case RUN_NONINTERACTIVE:
/* Make sure all the arguments are there! */
if (nparams != 5)
status = STATUS_CALLING_ERROR;
if (status == STATUS_SUCCESS)
{
svals.direction = (gint) param[3].data.d_int32;
svals.depth = (gint) param[4].data.d_int32;
}
if(svals.direction<0 || svals.direction>4)
status = STATUS_CALLING_ERROR;
if(svals.depth<1 || svals.depth>50)
status = STATUS_CALLING_ERROR;
break;
case RUN_WITH_LAST_VALS:
/* Possibly retrieve data */
gimp_get_data ("plug_in_struc", &svals);
break;
default:
break;
}
if (status == STATUS_SUCCESS)
{
/* Make sure that the drawable is gray or RGB color */
if (gimp_drawable_is_rgb (drawable->id) || gimp_drawable_is_gray (drawable->id))
{
gimp_progress_init ("struc");
gimp_tile_cache_ntiles (2 * (drawable->width / gimp_tile_width () + 1));
strucpi (drawable);
if (run_mode != RUN_NONINTERACTIVE)
gimp_displays_flush ();
/* Store data */
if (run_mode == RUN_INTERACTIVE)
gimp_set_data ("plug_in_struc", &svals, sizeof (StrucValues));
}
else
{
/* gimp_message ("struc: cannot operate on indexed color images"); */
status = STATUS_EXECUTION_ERROR;
}
}
values[0].data.d_status = status;
gimp_drawable_detach (drawable);
}
static gint
struc_dialog (void)
{
GtkWidget *dlg;
GtkWidget *vbox;
GtkWidget *frame;
GtkWidget *table;
GtkObject *adj;
gchar **argv;
gint argc;
argc = 1;
argv = g_new (gchar *, 1);
argv[0] = g_strdup ("struc");
gtk_init (&argc, &argv);
gtk_rc_parse (gimp_gtkrc ());
dlg = gimp_dialog_new (_("Apply Canvas"), "struc",
gimp_plugin_help_func, "filters/struc.html",
GTK_WIN_POS_MOUSE,
FALSE, TRUE, FALSE,
_("OK"), struc_ok_callback,
NULL, NULL, NULL, TRUE, FALSE,
_("Cancel"), gtk_widget_destroy,
NULL, 1, NULL, FALSE, TRUE,
NULL);
gtk_signal_connect (GTK_OBJECT (dlg), "destroy",
GTK_SIGNAL_FUNC (gtk_main_quit),
NULL);
/* Parameter settings */
frame = gtk_frame_new (_("Parameter Settings"));
gtk_container_set_border_width (GTK_CONTAINER (frame), 6);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dlg)->vbox), frame, TRUE, TRUE, 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);
frame =
gimp_radio_group_new2 (TRUE, _("Direction"),
gimp_radio_button_update,
&svals.direction, (gpointer) svals.direction,
_("Top-Right"), (gpointer) TOP_RIGHT, NULL,
_("Top-Left"), (gpointer) TOP_LEFT, NULL,
_("Bottom-Left"), (gpointer) BOTTOM_LEFT, NULL,
_("Bottom-Right"), (gpointer) BOTTOM_RIGHT, 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_box_pack_start (GTK_BOX (vbox), table, FALSE, FALSE, 0);
gtk_widget_show (table);
adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 0,
_("Depth:"), 100, 0,
svals.depth, 1, 50, 1, 5, 0,
NULL, NULL);
gtk_signal_connect (adj, "value_changed",
GTK_SIGNAL_FUNC (gimp_int_adjustment_update),
&svals.depth);
gtk_widget_show (dlg);
gtk_main ();
gdk_flush ();
return s_int.run;
}
static void
struc_ok_callback (GtkWidget *widget,
gpointer data)
{
s_int.run = TRUE;
gtk_widget_destroy (GTK_WIDGET (data));
}
/* Filter function */
static void
strucpi (GDrawable *drawable)
{
GPixelRgn srcPR, destPR;
gint width, height;
gint bytes;
guchar *dest, *d;
guchar *cur_row;
gint row, col, rrow, rcol;
gint x1, y1, x2, y2, varde;
gint xm, ym, offs;
gfloat mult;
/* Get the input area. This is the bounding box of the selection in
* the image (or the entire image if there is no selection). Only
* operating on the input area is simply an optimization. It doesn't
* need to be done for correct operation. (It simply makes it go
* faster, since fewer pixels need to be operated on).
*/
gimp_drawable_mask_bounds (drawable->id, &x1, &y1, &x2, &y2);
/* Get the size of the input image. (This will/must be the same
* as the size of the output image.
*/
width = drawable->width;
height = drawable->height;
bytes = drawable->bpp;
/* allocate row buffers */
cur_row = (guchar *) malloc ((x2 - x1) * bytes);
dest = (guchar *) malloc ((x2 - x1) * bytes);
/* initialize the pixel regions */
gimp_pixel_rgn_init (&srcPR, drawable, 0, 0, width, height, FALSE, FALSE);
gimp_pixel_rgn_init (&destPR, drawable, 0, 0, width, height, TRUE, TRUE);
mult=(gfloat)svals.depth*0.25;
switch(svals.direction)
{
case 0:
xm=1;
ym=128;
offs=0;
break;
case 1:
xm=-1;
ym=128;
offs=127;
break;
case 2:
xm=128;
ym=1;
offs=0;
break;
case 3:
xm=128;
ym=-1;
offs=128;
break;
default:
xm=1;
ym=128;
offs=0;
break;
}
/* Loop through the rows */
rrow = 0; rcol = 0;
for (row = y1; row < y2; row++)
{
gimp_pixel_rgn_get_row (&srcPR, cur_row, x1, row, (x2-x1));
d = dest;
rcol = 0;
switch (bytes)
{
case 1: /* Grayscale */
case 2: /* Grayscale alpha */
for (col = 0; col < (x2 - x1) * bytes; col+=bytes)
{
varde = cur_row[col] + mult*sdata[rcol*xm+rrow*ym+offs];
if (varde > 255 ) varde = 255;
if (varde < 0) varde = 0;
*d++ = (guchar)varde;
if (bytes == 2)
*d++ = cur_row[col+1];
rcol++;
if (rcol == 128) rcol = 0;
}
break;
case 3: /* RGB */
case 4: /* RGB alpha */
for (col = 0; col < (x2 - x1) * bytes; col+=bytes)
{
varde = cur_row[col] + mult*sdata[rcol*xm+rrow*ym+offs];
if (varde > 255 ) varde = 255;
if (varde < 0) varde = 0;
*d++ = (guchar)varde;
varde = cur_row[col+1] + mult*sdata[rcol*xm+rrow*ym+offs];
if (varde > 255 ) varde = 255;
if (varde < 0) varde = 0;
*d++ = (guchar)varde;
varde = cur_row[col+2] + mult*sdata[rcol*xm+rrow*ym+offs];
if (varde > 255 ) varde = 255;
if (varde < 0) varde = 0;
*d++ = (guchar)varde;
if (bytes == 4)
*d++ = cur_row[col+3];
rcol++;
if (rcol == 128) rcol = 0;
}
break;
}
/* store the dest */
gimp_pixel_rgn_set_row (&destPR, dest, x1, row, (x2 - x1));
rrow++;
if (rrow == 128) rrow = 0;
if ((row % 5) == 0)
gimp_progress_update ((double) row / (double) (y2 - y1));
}
/* update the textured region */
gimp_drawable_flush (drawable);
gimp_drawable_merge_shadow (drawable->id, TRUE);
gimp_drawable_update (drawable->id, x1, y1, (x2 - x1), (y2 - y1));
free (cur_row);
free (dest);
}
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