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gimp/plug-ins/common/file-xbm.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* X10 and X11 bitmap (XBM) loading and saving file filter for 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 3 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, see <http://www.gnu.org/licenses/>.
*/
/* 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 <errno.h>
#include <string.h>
#include <glib/gstdio.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "libgimp/stdplugins-intl.h"
#define LOAD_PROC "file-xbm-load"
#define SAVE_PROC "file-xbm-save"
#define PLUG_IN_BINARY "file-xbm"
#define PLUG_IN_ROLE "gimp-file-xbm"
/* 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 64
/* 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"
};
/* Declare some local functions.
*/
static void query (void);
static void run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals);
static gint32 load_image (const gchar *filename,
GError **error);
static gint save_image (const gchar *filename,
const gchar *prefix,
const gchar *comment,
gboolean save_mask,
gint32 image_ID,
gint32 drawable_ID,
GError **error);
static gboolean save_dialog (gint32 drawable_ID);
#if 0
/* DISABLED - see http://bugzilla.gnome.org/show_bug.cgi?id=82763 */
static void comment_entry_callback (GtkWidget *widget,
gpointer data);
#endif
static void prefix_entry_callback (GtkWidget *widget,
gpointer data);
static void mask_ext_entry_callback (GtkWidget *widget,
gpointer data);
const 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 const GimpParamDef load_args[] =
{
{ GIMP_PDB_INT32, "run-mode", "The run mode { RUN-INTERACTIVE (0), RUN-NONINTERACTIVE (1) }" },
{ GIMP_PDB_STRING, "filename", "The name of the file to load" },
{ GIMP_PDB_STRING, "raw-filename", "The name entered" }
};
static const GimpParamDef load_return_vals[] =
{
{ GIMP_PDB_IMAGE, "image", "Output image" }
};
static const GimpParamDef save_args[] =
{
{ GIMP_PDB_INT32, "run-mode", "The run mode { RUN-INTERACTIVE (0), RUN-NONINTERACTIVE (1) }" },
{ 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" }
} ;
gimp_install_procedure (LOAD_PROC,
"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",
N_("X BitMap image"),
NULL,
GIMP_PLUGIN,
G_N_ELEMENTS (load_args),
G_N_ELEMENTS (load_return_vals),
load_args, load_return_vals);
gimp_register_file_handler_mime (LOAD_PROC, "image/x-xbitmap");
gimp_register_load_handler (LOAD_PROC,
"xbm,icon,bitmap",
"");
gimp_install_procedure (SAVE_PROC,
"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",
N_("X BitMap image"),
"INDEXED",
GIMP_PLUGIN,
G_N_ELEMENTS (save_args), 0,
save_args, NULL);
gimp_register_file_handler_mime (SAVE_PROC, "image/x-xbitmap");
gimp_register_save_handler (SAVE_PROC, "xbm,icon,bitmap", "");
}
static gchar *
init_prefix (const gchar *filename)
{
gchar *p, *prefix;
gint len;
prefix = g_path_get_basename (filename);
memset (xsvals.prefix, 0, sizeof (xsvals.prefix));
if (prefix)
{
/* Strip any extension. */
p = strrchr (prefix, '.');
if (p && p != prefix)
len = MIN (MAX_PREFIX, p - prefix);
else
len = MAX_PREFIX;
strncpy (xsvals.prefix, prefix, len);
g_free (prefix);
}
return xsvals.prefix;
}
static void
run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals)
{
static GimpParam values[2];
GimpRunMode run_mode;
GimpPDBStatusType status = GIMP_PDB_SUCCESS;
gint32 image_ID;
gint32 drawable_ID;
GimpParasite *parasite = NULL;
gchar *mask_filename = NULL;
GError *error = NULL;
GimpExportReturn export = GIMP_EXPORT_CANCEL;
INIT_I18N ();
gegl_init (NULL, NULL);
strncpy (xsvals.comment, "Created with 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, LOAD_PROC) == 0)
{
image_ID = load_image (param[1].data.d_string, &error);
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, SAVE_PROC) == 0)
{
image_ID = param[1].data.d_int32;
drawable_ID = param[2].data.d_int32;
switch (run_mode)
{
case GIMP_RUN_INTERACTIVE:
case GIMP_RUN_WITH_LAST_VALS:
gimp_ui_init (PLUG_IN_BINARY, FALSE);
export = gimp_export_image (&image_ID, &drawable_ID, "XBM",
GIMP_EXPORT_CAN_HANDLE_BITMAP |
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 (SAVE_PROC, &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_get_parasite (image_ID, "gimp-comment");
if (parasite)
{
gint size = gimp_parasite_data_size (parasite);
strncpy (xsvals.comment,
gimp_parasite_data (parasite), MIN (size, MAX_COMMENT));
xsvals.comment[MIN (size, MAX_COMMENT) + 1] = 0;
gimp_parasite_free (parasite);
}
parasite = gimp_image_get_parasite (image_ID, "hot-spot");
if (parasite)
{
gint x, y;
if (sscanf (gimp_parasite_data (parasite), "%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_path_get_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. */
for (temp = xsvals.prefix; *temp; temp++)
if (! g_ascii_isalnum (*temp))
*temp = '_';
mask_prefix = g_strdup_printf ("%s%s",
xsvals.prefix, xsvals.mask_ext);
for (temp = mask_prefix; *temp; temp++)
if (! g_ascii_isalnum (*temp))
*temp = '_';
if (save_image (param[3].data.d_string,
xsvals.prefix,
xsvals.comment,
FALSE,
image_ID, drawable_ID,
&error)
&& (! xsvals.write_mask || save_image (mask_filename,
mask_prefix,
xsvals.comment,
TRUE,
image_ID, drawable_ID,
&error)))
{
/* Store xsvals data */
gimp_set_data (SAVE_PROC, &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;
}
if (status != GIMP_PDB_SUCCESS && error)
{
*nreturn_vals = 2;
values[1].type = GIMP_PDB_STRING;
values[1].data.d_string = error->message;
}
values[0].data.d_status = status;
}
/* Return the value of a digit. */
static gint
getval (gint c,
gint base)
{
const gchar *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 (c != EOF && g_ascii_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,
const 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 && ! g_ascii_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 (g_ascii_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 gint32
load_image (const gchar *filename,
GError **error)
{
FILE *fp;
GeglBuffer *buffer;
gint32 image_ID;
gint32 layer_ID;
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 *comment;
const guchar cmap[] =
{
0x00, 0x00, 0x00, /* black */
0xff, 0xff, 0xff /* white */
};
fp = g_fopen (filename, "rb");
if (! fp)
{
g_set_error (error, G_FILE_ERROR, g_file_error_from_errno (errno),
_("Could not open '%s' for reading: %s"),
gimp_filename_to_utf8 (filename), g_strerror (errno));
return -1;
}
gimp_progress_init_printf (_("Opening '%s'"),
gimp_filename_to_utf8 (filename));
comment = fgetcomment (fp);
/* Loosely parse the header */
intbits = height = width = 0;
c = ' ';
do
{
if (g_ascii_isspace (c))
{
if (match (fp, "char"))
{
c = fgetc (fp);
if (g_ascii_isspace (c))
{
intbits = 8;
continue;
}
}
else if (match (fp, "short"))
{
c = fgetc (fp);
if (g_ascii_isspace (c))
{
intbits = 16;
continue;
}
}
}
if (c == '_')
{
if (match (fp, "width"))
{
c = fgetc (fp);
if (g_ascii_isspace (c))
{
width = get_int (fp);
continue;
}
}
else if (match (fp, "height"))
{
c = fgetc (fp);
if (g_ascii_isspace (c))
{
height = get_int (fp);
continue;
}
}
else if (match (fp, "x_hot"))
{
c = fgetc (fp);
if (g_ascii_isspace (c))
{
x_hot = get_int (fp);
continue;
}
}
else if (match (fp, "y_hot"))
{
c = fgetc (fp);
if (g_ascii_isspace (c))
{
y_hot = get_int (fp);
continue;
}
}
}
c = cpp_fgetc (fp);
}
while (c != '{' && c != EOF);
if (c == EOF)
{
g_message (_("'%s':\nCould not read header (ftell == %ld)"),
gimp_filename_to_utf8 (filename), ftell (fp));
return -1;
}
if (width <= 0)
{
g_message (_("'%s':\nNo image width specified"),
gimp_filename_to_utf8 (filename));
return -1;
}
if (width > GIMP_MAX_IMAGE_SIZE)
{
g_message (_("'%s':\nImage width is larger than GIMP can handle"),
gimp_filename_to_utf8 (filename));
return -1;
}
if (height <= 0)
{
g_message (_("'%s':\nNo image height specified"),
gimp_filename_to_utf8 (filename));
return -1;
}
if (height > GIMP_MAX_IMAGE_SIZE)
{
g_message (_("'%s':\nImage height is larger than GIMP can handle"),
gimp_filename_to_utf8 (filename));
return -1;
}
if (intbits == 0)
{
g_message (_("'%s':\nNo image data type specified"),
gimp_filename_to_utf8 (filename));
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_attach_parasite (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_attach_parasite (image_ID, parasite);
gimp_parasite_free (parasite);
}
/* Set a black-and-white colormap. */
gimp_image_set_colormap (image_ID, cmap, 2);
layer_ID = gimp_layer_new (image_ID,
_("Background"),
width, height,
GIMP_INDEXED_IMAGE,
100,
GIMP_NORMAL_MODE);
gimp_image_insert_layer (image_ID, layer_ID, -1, 0);
buffer = gimp_drawable_get_buffer (layer_ID);
/* 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. */
gegl_buffer_set (buffer, GEGL_RECTANGLE (0, i, width, tileheight), 0,
NULL, data, GEGL_AUTO_ROWSTRIDE);
gimp_progress_update ((double) (i + tileheight) / (double) height);
}
g_free (data);
g_object_unref (buffer);
fclose (fp);
gimp_progress_update (1.0);
return image_ID;
}
static gboolean
save_image (const gchar *filename,
const gchar *prefix,
const gchar *comment,
gboolean save_mask,
gint32 image_ID,
gint32 drawable_ID,
GError **error)
{
FILE *fp;
GeglBuffer *buffer;
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;
const gchar *intfmt;
#if 0
if (save_mask)
g_printerr ("%s: save_mask '%s'\n", G_STRFUNC, prefix);
else
g_printerr ("%s: save_image '%s'\n", G_STRFUNC, prefix);
#endif
cmap = gimp_image_get_colormap (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 "
"an XBM contains more than two colors.\n\n"
"Please convert it to a black and white "
"(1-bit) indexed image and try again."));
g_free (cmap);
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;
}
buffer = gimp_drawable_get_buffer (drawable_ID);
width = gegl_buffer_get_width (buffer);
height = gegl_buffer_get_height (buffer);
bpp = gimp_drawable_bpp (drawable_ID);
/* 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 = g_fopen (filename, "w");
if (! fp)
{
g_set_error (error, G_FILE_ERROR, g_file_error_from_errno (errno),
_("Could not open '%s' for writing: %s"),
gimp_filename_to_utf8 (filename), g_strerror (errno));
return FALSE;
}
gimp_progress_init_printf (_("Saving '%s'"),
gimp_filename_to_utf8 (filename));
/* Maybe write the image comment. */
#if 0
/* DISABLED - see http://bugzilla.gnome.org/show_bug.cgi?id=82763 */
/* a future version should write the comment at the end of the file */
if (*comment)
fprintf (fp, "/* %s */\n", comment);
#endif
/* 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);
/* 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);
gegl_buffer_get (buffer, GEGL_RECTANGLE (0, i, width, tileheight), 1.0,
NULL, data,
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
#ifdef VERBOSE
if (verbose > 1)
printf ("XBM: 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");
g_object_unref (buffer);
fclose (fp);
g_free (data);
gimp_progress_update (1.0);
return TRUE;
}
static gboolean
save_dialog (gint32 drawable_ID)
{
GtkWidget *dialog;
GtkWidget *frame;
GtkWidget *vbox;
GtkWidget *toggle;
GtkWidget *table;
GtkWidget *entry;
GtkWidget *spinbutton;
GtkObject *adj;
gboolean run;
dialog = gimp_export_dialog_new (_("XBM"), PLUG_IN_BINARY, SAVE_PROC);
/* parameter settings */
frame = gimp_frame_new (_("XBM Options"));
gtk_container_set_border_width (GTK_CONTAINER (frame), 12);
gtk_box_pack_start (GTK_BOX (gimp_export_dialog_get_content_area (dialog)),
frame, TRUE, TRUE, 0);
gtk_widget_show (frame);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
gtk_container_add (GTK_CONTAINER (frame), vbox);
/* X10 format */
toggle = gtk_check_button_new_with_mnemonic (_("_X10 format bitmap"));
gtk_box_pack_start (GTK_BOX (vbox), toggle, FALSE, FALSE, 0);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), xsvals.x10_format);
gtk_widget_show (toggle);
g_signal_connect (toggle, "toggled",
G_CALLBACK (gimp_toggle_button_update),
&xsvals.x10_format);
table = gtk_table_new (2, 2, 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 (vbox), table, FALSE, FALSE, 0);
gtk_widget_show (table);
/* prefix */
entry = gtk_entry_new ();
gtk_entry_set_max_length (GTK_ENTRY (entry), MAX_PREFIX);
gtk_entry_set_text (GTK_ENTRY (entry), xsvals.prefix);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 0,
_("_Identifier prefix:"), 0.0, 0.5,
entry, 1, TRUE);
g_signal_connect (entry, "changed",
G_CALLBACK (prefix_entry_callback),
NULL);
/* comment string. */
#if 0
/* DISABLED - see http://bugzilla.gnome.org/show_bug.cgi?id=82763 */
entry = gtk_entry_new ();
gtk_entry_set_max_length (GTK_ENTRY (entry), MAX_COMMENT);
gtk_widget_set_size_request (entry, 240, -1);
gtk_entry_set_text (GTK_ENTRY (entry), xsvals.comment);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 1,
_("Comment:"), 0.0, 0.5,
entry, 1, TRUE);
g_signal_connect (entry, "changed",
G_CALLBACK (comment_entry_callback),
NULL);
#endif
/* hotspot toggle */
toggle = gtk_check_button_new_with_mnemonic (_("_Write hot spot values"));
gtk_box_pack_start (GTK_BOX (vbox), toggle, FALSE, FALSE, 0);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), xsvals.use_hot);
gtk_widget_show (toggle);
g_signal_connect (toggle, "toggled",
G_CALLBACK (gimp_toggle_button_update),
&xsvals.use_hot);
table = gtk_table_new (2, 2, 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 (vbox), table, FALSE, FALSE, 0);
gtk_widget_show (table);
g_object_bind_property (toggle, "active",
table, "sensitive",
G_BINDING_SYNC_CREATE);
spinbutton = gimp_spin_button_new (&adj, xsvals.x_hot, 0,
gimp_drawable_width (drawable_ID) - 1,
1, 10, 0, 0, 0);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 0,
_("Hot spot _X:"), 0.0, 0.5,
spinbutton, 1, TRUE);
g_signal_connect (adj, "value-changed",
G_CALLBACK (gimp_int_adjustment_update),
&xsvals.x_hot);
spinbutton = gimp_spin_button_new (&adj, xsvals.y_hot, 0,
gimp_drawable_height (drawable_ID) - 1,
1, 10, 0, 0, 0);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 1,
_("Hot spot _Y:"), 0.0, 0.5,
spinbutton, 1, TRUE);
g_signal_connect (adj, "value-changed",
G_CALLBACK (gimp_int_adjustment_update),
&xsvals.y_hot);
/* mask file */
frame = gimp_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_table_set_col_spacings (GTK_TABLE (table), 6);
gtk_table_set_row_spacings (GTK_TABLE (table), 6);
gtk_container_add (GTK_CONTAINER (frame), table);
gtk_widget_show (table);
toggle = gtk_check_button_new_with_mnemonic (_("W_rite extra mask file"));
gtk_table_attach_defaults (GTK_TABLE (table), toggle, 0, 2, 0, 1);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), xsvals.write_mask);
gtk_widget_show (toggle);
g_signal_connect (toggle, "toggled",
G_CALLBACK (gimp_toggle_button_update),
&xsvals.write_mask);
entry = gtk_entry_new ();
gtk_entry_set_max_length (GTK_ENTRY (entry), 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:"), 0.0, 0.5,
entry, 1, TRUE);
g_signal_connect (entry, "changed",
G_CALLBACK (mask_ext_entry_callback),
NULL);
g_object_bind_property (toggle, "active",
entry, "sensitive",
G_BINDING_SYNC_CREATE);
gtk_widget_set_sensitive (frame, gimp_drawable_has_alpha (drawable_ID));
/* Done. */
gtk_widget_show (vbox);
gtk_widget_show (dialog);
run = (gimp_dialog_run (GIMP_DIALOG (dialog)) == GTK_RESPONSE_OK);
gtk_widget_destroy (dialog);
return run;
}
/* Update the comment string. */
#if 0
/* DISABLED - see http://bugzilla.gnome.org/show_bug.cgi?id=82763 */
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);
}
#endif
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.mask_ext, 0, sizeof (xsvals.mask_ext));
strncpy (xsvals.mask_ext,
gtk_entry_get_text (GTK_ENTRY (widget)), MAX_MASK_EXT);
}
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