1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
/*
* Semi-Flatten plug-in v1.0 by Adam D. Moss, adam@foxbox.org. 1998/01/27
*/
/* 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.
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <libgimp/gimp.h>
#include "libgimp/stdplugins-intl.h"
/* Declare local functions.
*/
static void query (void);
static void run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals);
static void semiflatten (GimpDrawable *drawable);
static guchar bgred, bggreen, bgblue;
GimpPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run, /* run_proc */
};
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_install_procedure ("plug_in_semiflatten",
"Flatten pixels in an RGBA image that aren't "
"completely transparent against the current GIMP "
"background color",
"This plugin flattens pixels in an RGBA image that "
"aren't completely transparent against the current "
"GIMP background color",
"Adam D. Moss (adam@foxbox.org)",
"Adam D. Moss (adam@foxbox.org)",
"27th January 1998",
N_("_Semi-Flatten"),
"RGBA",
GIMP_PLUGIN,
G_N_ELEMENTS (args), 0,
args, NULL);
gimp_plugin_menu_register ("plug_in_semiflatten",
"<Image>/Filters/Colors");
gimp_plugin_menu_register ("plug_in_semiflatten",
"<Image>/Layer/Transparency/Modify");
}
static void
run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals)
{
static GimpParam values[1];
GimpDrawable *drawable;
gint32 image_ID;
GimpPDBStatusType status = GIMP_PDB_SUCCESS;
GimpRunMode run_mode;
*nreturn_vals = 1;
*return_vals = values;
run_mode = param[0].data.d_int32;
values[0].type = GIMP_PDB_STATUS;
values[0].data.d_status = status;
INIT_I18N();
/* Get the specified drawable */
drawable = gimp_drawable_get (param[2].data.d_drawable);
image_ID = param[1].data.d_image;
if (status == GIMP_PDB_SUCCESS)
{
/* Make sure that the drawable is indexed or RGB color */
if (gimp_drawable_is_rgb (drawable->drawable_id))
{
gimp_progress_init (_("Semi-Flattening..."));
gimp_tile_cache_ntiles (2 * (drawable->width / gimp_tile_width ()
+ 1));
semiflatten (drawable);
gimp_displays_flush ();
}
else
{
status = GIMP_PDB_EXECUTION_ERROR;
}
}
values[0].data.d_status = status;
gimp_drawable_detach (drawable);
}
static void
semiflatten_func (const guchar *src,
guchar *dest,
gint bpp,
gpointer data)
{
dest[0] = (src[0] * src[3]) / 255 + (bgred * (255 - src[3])) / 255;
dest[1] = (src[1] * src[3]) / 255 + (bggreen * (255 - src[3])) / 255;
dest[2] = (src[2] * src[3]) / 255 + (bgblue * (255 - src[3])) / 255;
dest[3] = (src[3] == 0) ? 0 : 255;
}
static void
semiflatten (GimpDrawable *drawable)
{
GimpRGB background;
gimp_context_get_background (&background);
gimp_rgb_get_uchar (&background, &bgred, &bggreen, &bgblue);
gimp_rgn_iterate2 (drawable, 0 /* unused */, semiflatten_func, NULL);
}
|
