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gimp/plug-ins/common/fp.c

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/*
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* This is a plug-in for the GIMP.
*
* Copyright (C) Pavel Grinfeld (pavel@ml.com)
*
*
* 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 <stdio.h>
#include <stdlib.h>
#include <gtk/gtk.h>
#include <libgimp/gimp.h>
#include "fp.h"
#include "libgimp/stdplugins-intl.h"
FP_Params Current =
{
1,
.25, /* Initial Roughness */
NULL,
.6, /* Initial Degree of Aliasing */
NULL,
80,
NULL,
MIDTONES, /* Initial Range */
BY_VAL, /* Initial God knows what */
TRUE, /* Selection Only */
TRUE, /* Real Time */
0, /* Offset */
0,
{32,224,255},
{0,0,0}
};
GimpDrawable *drawable, *mask;
void query (void);
void run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals);
GimpPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run, /* run_proc */
};
MAIN()
void
query (void)
{
GimpParamDef args[] =
{
{ GIMP_PDB_INT32, "run_mode", "Interactive, non-interactive" },
{ GIMP_PDB_IMAGE, "image", "Input image (used for indexed images)" },
{ GIMP_PDB_DRAWABLE, "drawable", "Input drawable" },
};
gimp_install_procedure ("plug_in_filter_pack",
"Allows the user to change H, S, or C with many previews",
"No help available",
"Pavel Grinfeld (pavel@ml.com)",
"Pavel Grinfeld (pavel@ml.com)",
"27th March 1997",
N_("<Image>/Filters/Colors/_Filter Pack..."),
"RGB*",
GIMP_PLUGIN,
G_N_ELEMENTS (args), 0,
args, NULL);
}
/********************************STANDARD RUN*************************/
void
run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals)
{
GimpParam values[1];
GimpPDBStatusType status = GIMP_PDB_SUCCESS;
*nreturn_vals = 1;
*return_vals = values;
INIT_I18N ();
values[0].type = GIMP_PDB_STATUS;
values[0].data.d_status = status;
initializeFilterPacks();
drawable = gimp_drawable_get (param[2].data.d_drawable);
mask = gimp_drawable_get (gimp_image_get_selection (param[1].data.d_image));
if (gimp_drawable_is_indexed (drawable->drawable_id) ||
gimp_drawable_is_gray (drawable->drawable_id) )
{
gimp_message (_("Convert the image to RGB first!"));
status = GIMP_PDB_EXECUTION_ERROR;
}
else if (gimp_drawable_is_rgb (drawable->drawable_id) && fp_dialog())
{
gimp_progress_init (_("Applying the Filter Pack..."));
gimp_tile_cache_ntiles (2 * (drawable->width / gimp_tile_width () + 1));
fp (drawable);
gimp_displays_flush ();
}
else status = GIMP_PDB_EXECUTION_ERROR;
values[0].data.d_status = status;
if (status==GIMP_PDB_SUCCESS)
gimp_drawable_detach (drawable);
}
void
fp_row (const guchar *src_row,
guchar *dest_row,
gint row,
gint row_width,
gint bytes)
{
gint col, bytenum, k;
gint JudgeBy, Intensity=0, P[3], backupP[3];
GimpRGB rgb;
GimpHSV hsv;
gint M, m, middle;
for (col = 0; col < row_width ; col++)
{
backupP[0] = P[0] = src_row[col * bytes + 0];
backupP[0] = P[1] = src_row[col * bytes + 1];
backupP[0] = P[2] = src_row[col * bytes + 2];
gimp_rgb_set_uchar (&rgb, (guchar) P[0], (guchar) P[1], (guchar) P[2]);
gimp_rgb_to_hsv (&rgb, &hsv);
for (JudgeBy = BY_HUE; JudgeBy < JUDGE_BY; JudgeBy++)
{
if (! Current.Touched[JudgeBy])
continue;
switch (JudgeBy)
{
case BY_HUE:
Intensity = 255 * hsv.h;
break;
case BY_SAT:
Intensity = 255 * hsv.s;
break;
case BY_VAL:
Intensity = 255 * hsv.v;
break;
}
/* It's important to take care of Saturation first!!! */
m = MIN (MIN (P[0], P[1]), P[2]);
M = MAX (MAX (P[0], P[1]), P[2]);
middle = (M + m) / 2;
for (k = 0; k < 3; k++)
if (P[k] != m && P[k] != M)
middle = P[k];
for (k = 0; k < 3; k++)
if (M != m)
{
if (P[k] == M)
P[k] = MAX (P[k] + Current.satAdj[JudgeBy][Intensity], middle);
else if (P[k] == m)
P[k] = MIN (P[k] - Current.satAdj[JudgeBy][Intensity], middle);
}
P[0] += Current.redAdj[JudgeBy][Intensity];
P[1] += Current.greenAdj[JudgeBy][Intensity];
P[2] += Current.blueAdj[JudgeBy][Intensity];
P[0] = MAX (0, MIN (255, P[0]));
P[1] = MAX (0, MIN (255, P[1]));
P[2] = MAX (0, MIN (255, P[2]));
}
dest_row[col * bytes + 0] = P[0];
dest_row[col * bytes + 1] = P[1];
dest_row[col * bytes + 2] = P[2];
if (bytes > 3)
for (bytenum = 3; bytenum < bytes; bytenum++)
dest_row[col * bytes + bytenum] = src_row[col * bytes + bytenum];
}
}
void fp (GimpDrawable *drawable)
{
GimpPixelRgn srcPR, destPR;
gint width, height;
gint bytes;
guchar *src_row, *dest_row;
gint row;
gint x1, y1, x2, y2;
gimp_drawable_mask_bounds (drawable->drawable_id, &x1, &y1, &x2, &y2);
width = drawable->width;
height = drawable->height;
bytes = drawable->bpp;
src_row = (guchar *) malloc ((x2 - x1) * bytes);
dest_row = (guchar *) malloc ((x2 - x1) * bytes);
gimp_pixel_rgn_init (&srcPR, drawable, 0, 0, width, height, FALSE, FALSE);
gimp_pixel_rgn_init (&destPR, drawable, 0, 0, width, height, TRUE, TRUE);
for (row = y1; row < y2; row++)
{
gimp_pixel_rgn_get_row (&srcPR, src_row, x1, row, (x2 - x1));
fp_row (src_row,
dest_row,
row,
(x2 - x1),
bytes
);
gimp_pixel_rgn_set_row (&destPR, dest_row, x1, row, (x2 - x1));
if ((row % 10) == 0)
gimp_progress_update ((double) row / (double) (y2 - y1));
}
/* update the processed region */
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 (src_row);
free (dest_row);
}
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