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gimp/plug-ins/common/xbm.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* X10 and X11 bitmap (XBM) loading and saving file filter for the GIMP.
* XBM code Copyright (C) 1998 Gordon Matzigkeit
*
* The XBM reading and writing code was written from scratch by Gordon
* Matzigkeit <gord@gnu.org> based on the XReadBitmapFile(3X11) manual
* page distributed with X11R6 and by staring at valid XBM files. It
* does not contain any code written for other XBM file loaders.
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
/* Release 1.0, 1998-02-04, Gordon Matzigkeit <gord@gnu.org>:
* - Load and save X10 and X11 bitmaps.
* - Allow the user to specify the C identifier prefix.
*
* TODO:
* - Parsing is very tolerant, and the algorithms are quite hairy, so
* load_image should be carefully tested to make sure there are no XBM's
* that fail.
*/
/* Set this for debugging. */
/* #define VERBOSE 2 */
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <gtk/gtk.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "libgimp/stdplugins-intl.h"
/* Wear your GIMP with pride! */
#define DEFAULT_USE_COMMENT TRUE
#define MAX_COMMENT 72
#define MAX_MASK_EXT 32
/* C identifier prefix. */
#define DEFAULT_PREFIX "bitmap"
#define MAX_PREFIX 24
/* Whether or not to save as X10 bitmap. */
#define DEFAULT_X10_FORMAT FALSE
typedef struct _XBMSaveVals
{
gchar comment[MAX_COMMENT + 1];
gint x10_format;
gint use_hot;
gint x_hot;
gint y_hot;
gchar prefix[MAX_PREFIX + 1];
gboolean write_mask;
gchar mask_ext[MAX_MASK_EXT + 1];
} XBMSaveVals;
static XBMSaveVals xsvals =
{
"###", /* comment */
DEFAULT_X10_FORMAT, /* x10_format */
FALSE,
0, /* x_hot */
0, /* y_hot */
DEFAULT_PREFIX, /* prefix */
FALSE, /* write_mask */
"_mask"
};
typedef struct _XBMSaveInterface
{
gint run;
} XBMSaveInterface;
static XBMSaveInterface xsint =
{
FALSE /* run */
};
/* Declare some local functions.
*/
static void query (void);
static void run (gchar *name,
gint nparams,
GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals);
static gint32 load_image (gchar *filename);
static gint save_image (gchar *filename,
gchar *prefix,
gchar *comment,
gboolean save_mask,
gint32 image_ID,
gint32 drawable_ID);
static gint save_dialog (gint32 drawable_ID);
static void save_ok_callback (GtkWidget *widget,
gpointer data);
static void comment_entry_callback (GtkWidget *widget,
gpointer data);
static void prefix_entry_callback (GtkWidget *widget,
gpointer data);
static void mask_ext_entry_callback (GtkWidget *widget,
gpointer data);
GimpPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run, /* run_proc */
};
MAIN ()
#ifdef VERBOSE
static int verbose = VERBOSE;
#endif
static void
query (void)
{
static GimpParamDef load_args[] =
{
{ GIMP_PDB_INT32, "run_mode", "Interactive, non-interactive" },
{ GIMP_PDB_STRING, "filename", "The name of the file to load" },
{ GIMP_PDB_STRING, "raw_filename", "The name entered" }
};
static gint nload_args = sizeof (load_args) / sizeof (load_args[0]);
static GimpParamDef load_return_vals[] =
{
{ GIMP_PDB_IMAGE, "image", "Output image" }
};
static gint nload_return_vals = (sizeof (load_return_vals) /
sizeof (load_return_vals[0]));
static GimpParamDef save_args[] =
{
{ GIMP_PDB_INT32, "run_mode", "Interactive, non-interactive" },
{ GIMP_PDB_IMAGE, "image", "Input image" },
{ GIMP_PDB_DRAWABLE, "drawable", "Drawable to save" },
{ GIMP_PDB_STRING, "filename", "The name of the file to save" },
{ GIMP_PDB_STRING, "raw_filename", "The name entered" },
{ GIMP_PDB_STRING, "comment", "Image description (maximum 72 bytes)" },
{ GIMP_PDB_INT32, "x10", "Save in X10 format" },
{ GIMP_PDB_INT32, "x_hot", "X coordinate of hotspot" },
{ GIMP_PDB_INT32, "y_hot", "Y coordinate of hotspot" },
{ GIMP_PDB_STRING, "prefix", "Identifier prefix [determined from filename]"},
{ GIMP_PDB_INT32, "write_mask", "(0 = ignore, 1 = save as extra file)" },
{ GIMP_PDB_STRING, "mask_extension", "Extension of the mask file" }
} ;
static gint nsave_args = sizeof (save_args) / sizeof (save_args[0]);
gimp_install_procedure ("file_xbm_load",
"Load a file in X10 or X11 bitmap (XBM) file format",
"Load a file in X10 or X11 bitmap (XBM) file format. XBM is a lossless format for flat black-and-white (two color indexed) images.",
"Gordon Matzigkeit",
"Gordon Matzigkeit",
"1998",
"<Load>/XBM",
NULL,
GIMP_PLUGIN,
nload_args, nload_return_vals,
load_args, load_return_vals);
gimp_install_procedure ("file_xbm_save",
"Save a file in X10 or X11 bitmap (XBM) file format",
"Save a file in X10 or X11 bitmap (XBM) file format. XBM is a lossless format for flat black-and-white (two color indexed) images.",
"Gordon Matzigkeit",
"Gordon Matzigkeit",
"1998",
"<Save>/XBM",
"INDEXED",
GIMP_PLUGIN,
nsave_args, 0,
save_args, NULL);
gimp_register_load_handler ("file_xbm_load",
"xbm,icon,bitmap",
"");
gimp_register_save_handler ("file_xbm_save",
"xbm,icon,bitmap",
"");
}
static gchar *
init_prefix (gchar *filename)
{
gchar *p, *prefix;
gint len;
prefix = g_basename (filename);
/* Strip any extension. */
p = strrchr (prefix, '.');
if (p && p != prefix)
len = MIN (MAX_PREFIX, p - prefix);
else
len = MAX_PREFIX;
memset (xsvals.prefix, 0, sizeof (xsvals.prefix));
strncpy (xsvals.prefix, prefix, len);
return xsvals.prefix;
}
static void
run (gchar *name,
gint nparams,
GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals)
{
static GimpParam values[2];
GimpRunModeType run_mode;
GimpPDBStatusType status = GIMP_PDB_SUCCESS;
gint32 image_ID;
gint32 drawable_ID;
GimpParasite *parasite = NULL;
gchar *mask_filename = NULL;
GimpExportReturnType export = GIMP_EXPORT_CANCEL;
INIT_I18N_UI();
strncpy (xsvals.comment, _("Created with The GIMP"), MAX_COMMENT);
run_mode = param[0].data.d_int32;
*nreturn_vals = 1;
*return_vals = values;
values[0].type = GIMP_PDB_STATUS;
values[0].data.d_status = GIMP_PDB_EXECUTION_ERROR;
#ifdef VERBOSE
if (verbose)
printf ("XBM: RUN %s\n", name);
#endif
if (strcmp (name, "file_xbm_load") == 0)
{
image_ID = load_image (param[1].data.d_string);
if (image_ID != -1)
{
*nreturn_vals = 2;
values[1].type = GIMP_PDB_IMAGE;
values[1].data.d_image = image_ID;
}
else
{
status = GIMP_PDB_EXECUTION_ERROR;
}
}
else if (strcmp (name, "file_xbm_save") == 0)
{
image_ID = param[1].data.d_int32;
drawable_ID = param[2].data.d_int32;
/* eventually export the image */
switch (run_mode)
{
case GIMP_RUN_INTERACTIVE:
case GIMP_RUN_WITH_LAST_VALS:
gimp_ui_init ("xbm", FALSE);
export = gimp_export_image (&image_ID, &drawable_ID, "XBM",
GIMP_EXPORT_CAN_HANDLE_INDEXED |
GIMP_EXPORT_CAN_HANDLE_ALPHA );
if (export == GIMP_EXPORT_CANCEL)
{
values[0].data.d_status = GIMP_PDB_CANCEL;
return;
}
break;
default:
break;
}
switch (run_mode)
{
case GIMP_RUN_INTERACTIVE:
case GIMP_RUN_WITH_LAST_VALS:
/* Possibly retrieve data */
gimp_get_data ("file_xbm_save", &xsvals);
/* Always override the prefix with the filename. */
mask_filename = g_strdup (init_prefix (param[3].data.d_string));
break;
case GIMP_RUN_NONINTERACTIVE:
/* Make sure all the required arguments are there! */
if (nparams < 5)
{
status = GIMP_PDB_CALLING_ERROR;
}
else
{
gint i = 5;
if (nparams > i)
{
memset (xsvals.comment, 0, sizeof (xsvals.comment));
strncpy (xsvals.comment, param[i].data.d_string,
MAX_COMMENT);
}
i ++;
if (nparams > i)
xsvals.x10_format = (param[i].data.d_int32) ? TRUE : FALSE;
i += 2;
if (nparams > i)
{
/* They've asked for a hotspot. */
xsvals.use_hot = TRUE;
xsvals.x_hot = param[i - 1].data.d_int32;
xsvals.y_hot = param[i].data.d_int32;
}
mask_filename = g_strdup (init_prefix (param[3].data.d_string));
i ++;
if (nparams > i)
{
memset (xsvals.prefix, 0, sizeof (xsvals.prefix));
strncpy (xsvals.prefix, param[i].data.d_string,
MAX_PREFIX);
}
i += 2;
if (nparams > i)
{
xsvals.write_mask = param[i - 1].data.d_int32;
memset (xsvals.mask_ext, 0, sizeof (xsvals.mask_ext));
strncpy (xsvals.mask_ext, param[i].data.d_string,
MAX_MASK_EXT);
}
i ++;
/* Too many arguments. */
if (nparams > i)
status = GIMP_PDB_CALLING_ERROR;
}
break;
default:
break;
}
if (run_mode == GIMP_RUN_INTERACTIVE)
{
/* Get the parasites */
parasite = gimp_image_parasite_find (image_ID, "gimp-comment");
if (parasite)
{
gpointer data;
gint size;
data = gimp_parasite_data (parasite);
size = gimp_parasite_data_size (parasite);
strncpy (xsvals.comment, data, MIN (size, MAX_COMMENT));
xsvals.comment[MIN (size, MAX_COMMENT) + 1] = 0;
gimp_parasite_free (parasite);
}
parasite = gimp_image_parasite_find (image_ID, "hot-spot");
if (parasite)
{
gpointer data;
gint x, y;
data = gimp_parasite_data (parasite);
if (sscanf (data, "%i %i", &x, &y) == 2)
{
xsvals.use_hot = TRUE;
xsvals.x_hot = x;
xsvals.y_hot = y;
}
gimp_parasite_free (parasite);
}
/* Acquire information with a dialog */
if (! save_dialog (drawable_ID))
status = GIMP_PDB_CANCEL;
}
if (status == GIMP_PDB_SUCCESS)
{
gchar *temp;
gchar *mask_prefix;
gchar *dirname;
temp = mask_filename;
if ((dirname = g_dirname (param[3].data.d_string)) != NULL)
{
mask_filename = g_strdup_printf ("%s/%s%s.xbm",
dirname, temp, xsvals.mask_ext);
g_free (dirname);
}
else
{
mask_filename = g_strdup_printf ("%s%s.xbm",
temp, xsvals.mask_ext);
}
g_free (temp);
/* Change any non-alphanumeric prefix characters to underscores. */
temp = xsvals.prefix;
while (*temp)
{
if (!isalnum (*temp))
*temp = '_';
temp ++;
}
mask_prefix = g_strdup_printf ("%s%s", xsvals.prefix, xsvals.mask_ext);
if (save_image (param[3].data.d_string,
xsvals.prefix,
xsvals.comment,
FALSE,
image_ID, drawable_ID) &&
xsvals.write_mask &&
save_image (mask_filename,
mask_prefix,
xsvals.comment,
TRUE,
image_ID, drawable_ID))
{
/* Store xsvals data */
gimp_set_data ("file_xbm_save", &xsvals, sizeof (xsvals));
}
else
{
status = GIMP_PDB_EXECUTION_ERROR;
}
g_free (mask_prefix);
g_free (mask_filename);
}
if (export == GIMP_EXPORT_EXPORT)
gimp_image_delete (image_ID);
}
else
{
status = GIMP_PDB_CALLING_ERROR;
}
values[0].data.d_status = status;
}
/* Return the value of a digit. */
static gint
getval (gint c,
gint base)
{
static guchar *digits = "0123456789abcdefABCDEF";
gint val;
/* Include uppercase hex digits. */
if (base == 16)
base = 22;
/* Find a match. */
for (val = 0; val < base; val ++)
if (c == digits[val])
return (val < 16) ? val : (val - 6);
return -1;
}
/* Get a comment */
static gchar *
fgetcomment (FILE *fp)
{
GString *str = NULL;
gint comment, c;
comment = 0;
do
{
c = fgetc (fp);
if (comment)
{
if (c == '*')
{
/* In a comment, with potential to leave. */
comment = 1;
}
else if (comment == 1 && c == '/')
{
gchar *retval;
/* Leaving a comment. */
comment = 0;
retval = g_strstrip (g_strdup (str->str));
g_string_free (str, TRUE);
return retval;
}
else
{
/* In a comment, with no potential to leave. */
comment = 2;
g_string_append_c (str, c);
}
}
else
{
/* Not in a comment. */
if (c == '/')
{
/* Potential to enter a comment. */
c = fgetc (fp);
if (c == '*')
{
/* Entered a comment, with no potential to leave. */
comment = 2;
str = g_string_new (NULL);
}
else
{
/* put everything back and return */
ungetc (c, fp);
c = '/';
ungetc (c, fp);
return NULL;
}
}
else if (isspace (c))
{
/* Skip leading whitespace */
continue;
}
}
}
while (comment && c != EOF);
if (str)
g_string_free (str, TRUE);
return NULL;
}
/* Same as fgetc, but skip C-style comments and insert whitespace. */
static gint
cpp_fgetc (FILE *fp)
{
gint comment, c;
/* FIXME: insert whitespace as advertised. */
comment = 0;
do
{
c = fgetc (fp);
if (comment)
{
if (c == '*')
/* In a comment, with potential to leave. */
comment = 1;
else if (comment == 1 && c == '/')
/* Leaving a comment. */
comment = 0;
else
/* In a comment, with no potential to leave. */
comment = 2;
}
else
{
/* Not in a comment. */
if (c == '/')
{
/* Potential to enter a comment. */
c = fgetc (fp);
if (c == '*')
/* Entered a comment, with no potential to leave. */
comment = 2;
else
{
/* Just a slash in the open. */
ungetc (c, fp);
c = '/';
}
}
}
}
while (comment && c != EOF);
return c;
}
/* Match a string with a file. */
static gint
match (FILE *fp,
gchar *s)
{
gint c;
do
{
c = fgetc (fp);
if (c == *s)
s ++;
else
break;
}
while (c != EOF && *s);
if (!*s)
return TRUE;
if (c != EOF)
ungetc (c, fp);
return FALSE;
}
/* Read the next integer from the file, skipping all non-integers. */
static gint
get_int (FILE *fp)
{
int digval, base, val, c;
do
c = cpp_fgetc (fp);
while (c != EOF && !isdigit (c));
if (c == EOF)
return 0;
/* Check for the base. */
if (c == '0')
{
c = fgetc (fp);
if (c == 'x' || c == 'X')
{
c = fgetc (fp);
base = 16;
}
else if (isdigit (c))
base = 8;
else
{
ungetc (c, fp);
return 0;
}
}
else
base = 10;
val = 0;
for (;;)
{
digval = getval (c, base);
if (digval == -1)
{
ungetc (c, fp);
break;
}
val *= base;
val += digval;
c = fgetc (fp);
}
return val;
}
static gint
load_image (gchar *filename)
{
FILE *fp;
gint32 image_ID, layer_ID;
GimpPixelRgn pixel_rgn;
GimpDrawable *drawable;
guchar *data;
gint intbits;
gint width = 0;
gint height = 0;
gint x_hot = 0;
gint y_hot = 0;
gint c, i, j, k;
gint tileheight, rowoffset;
gchar *name_buf;
gchar *comment;
guchar cmap[] =
{
0x00, 0x00, 0x00, /* black */
0xff, 0xff, 0xff /* white */
};
fp = fopen (filename, "rb");
if (!fp)
{
g_message (_("XBM: cannot open \"%s\"\n"), filename);
return -1;
}
name_buf = g_strdup_printf (_("Loading %s:"), filename);
gimp_progress_init (name_buf);
g_free (name_buf);
comment = fgetcomment (fp);
/* Loosely parse the header */
intbits = height = width = 0;
c = ' ';
do
{
if (isspace (c))
{
if (match (fp, "char"))
{
c = fgetc (fp);
if (isspace (c))
{
intbits = 8;
continue;
}
}
else if (match (fp, "short"))
{
c = fgetc (fp);
if (isspace (c))
{
intbits = 16;
continue;
}
}
}
if (c == '_')
{
if (match (fp, "width"))
{
c = fgetc (fp);
if (isspace (c))
{
width = get_int (fp);
continue;
}
}
else if (match (fp, "height"))
{
c = fgetc (fp);
if (isspace (c))
{
height = get_int (fp);
continue;
}
}
else if (match (fp, "x_hot"))
{
c = fgetc (fp);
if (isspace (c))
{
x_hot = get_int (fp);
continue;
}
}
else if (match (fp, "y_hot"))
{
c = fgetc (fp);
if (isspace (c))
{
y_hot = get_int (fp);
continue;
}
}
}
c = cpp_fgetc (fp);
}
while (c != '{' && c != EOF);
if (c == EOF)
{
g_message (_("XBM: cannot read header (ftell == %ld)\n"), ftell (fp));
return -1;
}
if (width == 0)
{
g_message (_("XBM: no image width specified\n"));
return -1;
}
if (height == 0)
{
g_message (_("XBM: no image height specified\n"));
return -1;
}
if (intbits == 0)
{
g_message (_("XBM: no image data type specified\n"));
return -1;
}
image_ID = gimp_image_new (width, height, GIMP_INDEXED);
gimp_image_set_filename (image_ID, filename);
if (comment)
{
GimpParasite *parasite;
parasite = gimp_parasite_new ("gimp-comment",
GIMP_PARASITE_PERSISTENT,
strlen (comment) + 1, (gpointer) comment);
gimp_image_parasite_attach (image_ID, parasite);
gimp_parasite_free (parasite);
g_free (comment);
}
x_hot = CLAMP (x_hot, 0, width);
y_hot = CLAMP (y_hot, 0, height);
if (x_hot > 0 || y_hot > 0)
{
GimpParasite *parasite;
gchar *str;
str = g_strdup_printf ("%d %d", x_hot, y_hot);
parasite = gimp_parasite_new ("hot-spot",
GIMP_PARASITE_PERSISTENT,
strlen (str) + 1, (gpointer) str);
g_free (str);
gimp_image_parasite_attach (image_ID, parasite);
gimp_parasite_free (parasite);
}
/* Set a black-and-white colormap. */
gimp_image_set_cmap (image_ID, cmap, 2);
layer_ID = gimp_layer_new (image_ID,
_("Background"),
width, height,
GIMP_INDEXED_IMAGE,
100,
GIMP_NORMAL_MODE);
gimp_image_add_layer (image_ID, layer_ID, 0);
drawable = gimp_drawable_get (layer_ID);
/* Prepare the pixel region. */
gimp_pixel_rgn_init (&pixel_rgn, drawable, 0, 0, width, height, TRUE, FALSE);
/* Allocate the data. */
tileheight = gimp_tile_height ();
data = (guchar *) g_malloc (width * tileheight);
for (i = 0; i < height; i += tileheight)
{
tileheight = MIN (tileheight, height - i);
#ifdef VERBOSE
if (verbose > 1)
printf ("XBM: reading %dx(%d+%d) pixel region\n", width, i,
tileheight);
#endif
/* Parse the data from the file */
for (j = 0; j < tileheight; j ++)
{
/* Read each row. */
rowoffset = j * width;
for (k = 0; k < width; k ++)
{
/* Expand each integer into INTBITS pixels. */
if (k % intbits == 0)
{
c = get_int (fp);
/* Flip all the bits so that 1's become black and
0's become white. */
c ^= 0xffff;
}
data[rowoffset + k] = c & 1;
c >>= 1;
}
}
/* Put the data into the image. */
gimp_progress_update ((double) (i + tileheight) / (double) height);
gimp_pixel_rgn_set_rect (&pixel_rgn, data, 0, i, width, tileheight);
}
g_free (data);
gimp_drawable_flush (drawable);
gimp_drawable_detach (drawable);
fclose (fp);
return image_ID;
}
static gboolean
save_image (gchar *filename,
gchar *prefix,
gchar *comment,
gboolean save_mask,
gint32 image_ID,
gint32 drawable_ID)
{
GimpDrawable *drawable;
GimpPixelRgn pixel_rgn;
FILE *fp;
gint width, height, colors, dark;
gint intbits, lineints, need_comma, nints, rowoffset, tileheight;
gint c, i, j, k, thisbit;
gboolean has_alpha;
gint bpp;
guchar *data, *cmap, *name_buf, *intfmt;
drawable = gimp_drawable_get (drawable_ID);
width = drawable->width;
height = drawable->height;
cmap = gimp_image_get_cmap (image_ID, &colors);
if (!gimp_drawable_is_indexed (drawable_ID) || colors > 2)
{
/* The image is not black-and-white. */
g_message (_("The image which you are trying to save as\n"
"an XBM contains more than two colors.\n\n"
"Please convert it to a black and white\n"
"(1-bit) indexed image and try again."));
return FALSE;
}
has_alpha = gimp_drawable_has_alpha (drawable_ID);
if (!has_alpha && save_mask)
{
g_message (_("You cannot save a cursor mask for an image\n"
"which has no alpha channel."));
return FALSE;
}
bpp = gimp_drawable_bpp (drawable_ID);
name_buf = g_strdup_printf (_("Saving %s:"), filename);
gimp_progress_init (name_buf);
g_free (name_buf);
/* Figure out which color is black, and which is white. */
dark = 0;
if (colors > 1)
{
gint first, second;
/* Maybe the second color is darker than the first. */
first = (cmap[0] * cmap[0]) + (cmap[1] * cmap[1]) + (cmap[2] * cmap[2]);
second = (cmap[3] * cmap[3]) + (cmap[4] * cmap[4]) + (cmap[5] * cmap[5]);
if (second < first)
dark = 1;
}
/* Now actually save the data. */
fp = fopen (filename, "w");
if (!fp)
{
g_message (_("XBM: cannot create \"%s\"\n"), filename);
return FALSE;
}
/* Maybe write the image comment. */
if (*comment)
fprintf (fp, "/* %s */\n", comment);
/* Write out the image height and width. */
fprintf (fp, "#define %s_width %d\n", prefix, width);
fprintf (fp, "#define %s_height %d\n", prefix, height);
/* Write out the hotspot, if any. */
if (xsvals.use_hot)
{
fprintf (fp, "#define %s_x_hot %d\n", prefix, xsvals.x_hot);
fprintf (fp, "#define %s_y_hot %d\n", prefix, xsvals.y_hot);
}
/* Now write the actual data. */
if (xsvals.x10_format)
{
/* We can fit 9 hex shorts on a single line. */
lineints = 9;
intbits = 16;
intfmt = " 0x%04x";
}
else
{
/* We can fit 12 hex chars on a single line. */
lineints = 12;
intbits = 8;
intfmt = " 0x%02x";
}
fprintf (fp, "static %s %s_bits[] = {\n ",
xsvals.x10_format ? "unsigned short" : "unsigned char", prefix);
/* Allocate a new set of pixels. */
tileheight = gimp_tile_height ();
data = (guchar *) g_malloc (width * tileheight * bpp);
gimp_pixel_rgn_init (&pixel_rgn, drawable, 0, 0, width, height,
FALSE, FALSE);
/* Write out the integers. */
need_comma = 0;
nints = 0;
for (i = 0; i < height; i += tileheight)
{
/* Get a horizontal slice of the image. */
tileheight = MIN (tileheight, height - i);
gimp_pixel_rgn_get_rect (&pixel_rgn, data, 0, i, width, tileheight);
#ifdef VERBOSE
if (verbose > 1)
printf ("TGA: writing %dx(%d+%d) pixel region\n",
width, i, tileheight);
#endif
for (j = 0; j < tileheight; j ++)
{
/* Write out a row at a time. */
rowoffset = j * width * bpp;
c = 0;
thisbit = 0;
for (k = 0; k < width * bpp; k += bpp)
{
if (k != 0 && thisbit == intbits)
{
/* Output a completed integer. */
if (need_comma)
fputc (',', fp);
need_comma = 1;
/* Maybe start a new line. */
if (nints ++ >= lineints)
{
nints = 1;
fputs ("\n ", fp);
}
fprintf (fp, intfmt, c);
/* Start a new integer. */
c = 0;
thisbit = 0;
}
/* Pack INTBITS pixels into an integer. */
if (save_mask)
{
c |= ((data[rowoffset + k + 1] < 128) ? 0 : 1) << (thisbit ++);
}
else
{
if (has_alpha && (data[rowoffset + k + 1] < 128))
c |= 0 << (thisbit ++);
else
c |= ((data[rowoffset + k] == dark) ? 1 : 0) << (thisbit ++);
}
}
if (thisbit != 0)
{
/* Write out the last oddball int. */
if (need_comma)
fputc (',', fp);
need_comma = 1;
/* Maybe start a new line. */
if (nints ++ == lineints)
{
nints = 1;
fputs ("\n ", fp);
}
fprintf (fp, intfmt, c);
}
}
gimp_progress_update ((double) (i + tileheight) / (double) height);
}
/* Write the trailer. */
fprintf (fp, " };\n");
fclose (fp);
return TRUE;
}
static gint
save_dialog (gint32 drawable_ID)
{
GtkWidget *dlg;
GtkWidget *frame;
GtkWidget *vbox;
GtkWidget *toggle;
GtkWidget *table;
GtkWidget *entry;
GtkWidget *spinbutton;
GtkObject *adj;
dlg = gimp_dialog_new (_("Save as XBM"), "xbm",
gimp_standard_help_func, "filters/xbm.html",
GTK_WIN_POS_MOUSE,
FALSE, TRUE, FALSE,
_("OK"), save_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 (_("XBM Options"));
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
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);
/* X10 format */
toggle = gtk_check_button_new_with_label (_("X10 Format Bitmap"));
gtk_box_pack_start (GTK_BOX (vbox), toggle, FALSE, FALSE, 0);
gtk_signal_connect (GTK_OBJECT (toggle), "toggled",
GTK_SIGNAL_FUNC (gimp_toggle_button_update),
&xsvals.x10_format);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), xsvals.x10_format);
gtk_widget_show (toggle);
table = gtk_table_new (2, 2, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (table), 4);
gtk_table_set_row_spacings (GTK_TABLE (table), 2);
gtk_box_pack_start (GTK_BOX (vbox), table, FALSE, FALSE, 0);
gtk_widget_show (table);
/* prefix */
entry = gtk_entry_new_with_max_length (MAX_PREFIX);
gtk_entry_set_text (GTK_ENTRY (entry), xsvals.prefix);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 0,
_("Identifier Prefix:"), 1.0, 0.5,
entry, 1, TRUE);
gtk_signal_connect (GTK_OBJECT (entry), "changed",
GTK_SIGNAL_FUNC (prefix_entry_callback),
NULL);
/* comment string. */
entry = gtk_entry_new_with_max_length (MAX_COMMENT);
gtk_widget_set_usize (entry, 240, 0);
gtk_entry_set_text (GTK_ENTRY (entry), xsvals.comment);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 1,
_("Comment:"), 1.0, 0.5,
entry, 1, TRUE);
gtk_signal_connect (GTK_OBJECT (entry), "changed",
GTK_SIGNAL_FUNC (comment_entry_callback),
NULL);
/* hotspot toggle */
toggle = gtk_check_button_new_with_label (_("Write Hot Spot Values"));
gtk_box_pack_start (GTK_BOX (vbox), toggle, FALSE, FALSE, 0);
gtk_signal_connect (GTK_OBJECT (toggle), "toggled",
GTK_SIGNAL_FUNC (gimp_toggle_button_update),
&xsvals.use_hot);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), xsvals.use_hot);
gtk_widget_show (toggle);
table = gtk_table_new (2, 2, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (table), 4);
gtk_table_set_row_spacings (GTK_TABLE (table), 2);
gtk_box_pack_start (GTK_BOX (vbox), table, FALSE, FALSE, 0);
gtk_widget_show (table);
gtk_object_set_data (GTK_OBJECT (toggle), "set_sensitive", table);
gtk_widget_set_sensitive (table, xsvals.use_hot);
spinbutton = gimp_spin_button_new (&adj, xsvals.x_hot, 0,
gimp_drawable_width (drawable_ID) - 1,
1, 1, 1, 0, 0);
gtk_signal_connect (GTK_OBJECT (adj), "value_changed",
GTK_SIGNAL_FUNC (gimp_int_adjustment_update),
&xsvals.x_hot);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 0,
_("Hot Spot X:"), 1.0, 0.5,
spinbutton, 1, TRUE);
spinbutton = gimp_spin_button_new (&adj, xsvals.y_hot, 0,
gimp_drawable_height (drawable_ID) - 1,
1, 1, 1, 0, 0);
gtk_signal_connect (GTK_OBJECT (adj), "value_changed",
GTK_SIGNAL_FUNC (gimp_int_adjustment_update),
&xsvals.y_hot);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 1,
_("Y:"), 1.0, 0.5,
spinbutton, 1, TRUE);
/* mask file */
frame = gtk_frame_new (_("Mask File"));
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
table = gtk_table_new (2, 2, FALSE);
gtk_container_set_border_width (GTK_CONTAINER (table), 2);
gtk_table_set_col_spacings (GTK_TABLE (table), 4);
gtk_table_set_row_spacings (GTK_TABLE (table), 2);
gtk_container_add (GTK_CONTAINER (frame), table);
gtk_widget_show (table);
toggle = gtk_check_button_new_with_label (_("Write Extra Mask File"));
gtk_table_attach_defaults (GTK_TABLE (table), toggle, 0, 2, 0, 1);
gtk_signal_connect (GTK_OBJECT (toggle), "toggled",
GTK_SIGNAL_FUNC (gimp_toggle_button_update),
&xsvals.write_mask);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), xsvals.write_mask);
gtk_widget_show (toggle);
entry = gtk_entry_new_with_max_length (MAX_MASK_EXT);
gtk_entry_set_text (GTK_ENTRY (entry), xsvals.mask_ext);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 1,
_("Mask File Extension:"), 1.0, 0.5,
entry, 1, TRUE);
gtk_signal_connect (GTK_OBJECT (entry), "changed",
GTK_SIGNAL_FUNC (mask_ext_entry_callback),
NULL);
gtk_object_set_data (GTK_OBJECT (toggle), "set_sensitive", entry);
gtk_widget_set_sensitive (entry, xsvals.write_mask);
gtk_widget_set_sensitive (frame, gimp_drawable_has_alpha (drawable_ID));
/* Done. */
gtk_widget_show (vbox);
gtk_widget_show (dlg);
gtk_main ();
gdk_flush ();
return xsint.run;
}
/* Update the comment string. */
static void
comment_entry_callback (GtkWidget *widget,
gpointer data)
{
memset (xsvals.comment, 0, sizeof (xsvals.comment));
strncpy (xsvals.comment,
gtk_entry_get_text (GTK_ENTRY (widget)), MAX_COMMENT);
}
static void
prefix_entry_callback (GtkWidget *widget,
gpointer data)
{
memset (xsvals.prefix, 0, sizeof (xsvals.prefix));
strncpy (xsvals.prefix,
gtk_entry_get_text (GTK_ENTRY (widget)), MAX_PREFIX);
}
static void
mask_ext_entry_callback (GtkWidget *widget,
gpointer data)
{
memset (xsvals.prefix, 0, sizeof (xsvals.mask_ext));
strncpy (xsvals.mask_ext,
gtk_entry_get_text (GTK_ENTRY (widget)), MAX_MASK_EXT);
}
static void
save_ok_callback (GtkWidget *widget,
gpointer data)
{
xsint.run = TRUE;
gtk_widget_destroy (GTK_WIDGET (data));
}
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