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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 exporting 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 <https://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.
*/
#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 EXPORT_PROC "file-xbm-export"
#define PLUG_IN_BINARY "file-xbm"
#define MAX_COMMENT 72
#define MAX_MASK_EXT 32
#define MAX_PREFIX 64
typedef struct _Xbm Xbm;
typedef struct _XbmClass XbmClass;
struct _Xbm
{
GimpPlugIn parent_instance;
};
struct _XbmClass
{
GimpPlugInClass parent_class;
};
#define XBM_TYPE (xbm_get_type ())
#define XBM(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), XBM_TYPE, Xbm))
GType xbm_get_type (void) G_GNUC_CONST;
static GList * xbm_query_procedures (GimpPlugIn *plug_in);
static GimpProcedure * xbm_create_procedure (GimpPlugIn *plug_in,
const gchar *name);
static GimpValueArray * xbm_load (GimpProcedure *procedure,
GimpRunMode run_mode,
GFile *file,
GimpMetadata *metadata,
GimpMetadataLoadFlags *flags,
GimpProcedureConfig *config,
gpointer run_data);
static GimpValueArray * xbm_export (GimpProcedure *procedure,
GimpRunMode run_mode,
GimpImage *image,
GFile *file,
GimpExportOptions *options,
GimpMetadata *metadata,
GimpProcedureConfig *config,
gpointer run_data);
static GimpImage * load_image (GFile *file,
GError **error);
static gboolean export_image (GFile *file,
const gchar *prefix,
gboolean save_mask,
GimpImage *image,
GimpDrawable *drawable,
GObject *config,
GError **error);
static gboolean save_dialog (GimpImage *image,
GimpDrawable *drawable,
GimpProcedure *procedure,
GObject *config);
static gboolean print (GOutputStream *output,
GError **error,
const gchar *format,
...) G_GNUC_PRINTF (3, 4);
G_DEFINE_TYPE (Xbm, xbm, GIMP_TYPE_PLUG_IN)
GIMP_MAIN (XBM_TYPE)
DEFINE_STD_SET_I18N
static void
xbm_class_init (XbmClass *klass)
{
GimpPlugInClass *plug_in_class = GIMP_PLUG_IN_CLASS (klass);
plug_in_class->query_procedures = xbm_query_procedures;
plug_in_class->create_procedure = xbm_create_procedure;
plug_in_class->set_i18n = STD_SET_I18N;
}
static void
xbm_init (Xbm *xbm)
{
}
static GList *
xbm_query_procedures (GimpPlugIn *plug_in)
{
GList *list = NULL;
list = g_list_append (list, g_strdup (LOAD_PROC));
list = g_list_append (list, g_strdup (EXPORT_PROC));
return list;
}
static GimpProcedure *
xbm_create_procedure (GimpPlugIn *plug_in,
const gchar *name)
{
GimpProcedure *procedure = NULL;
if (! strcmp (name, LOAD_PROC))
{
procedure = gimp_load_procedure_new (plug_in, name,
GIMP_PDB_PROC_TYPE_PLUGIN,
xbm_load, NULL, NULL);
gimp_procedure_set_menu_label (procedure, _("X BitMap image"));
gimp_procedure_set_documentation (procedure,
_("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."),
name);
gimp_procedure_set_attribution (procedure,
"Gordon Matzigkeit",
"Gordon Matzigkeit",
"1998");
gimp_file_procedure_set_mime_types (GIMP_FILE_PROCEDURE (procedure),
"image/x-xbitmap");
gimp_file_procedure_set_extensions (GIMP_FILE_PROCEDURE (procedure),
"xbm,icon,bitmap");
}
else if (! strcmp (name, EXPORT_PROC))
{
procedure = gimp_export_procedure_new (plug_in, name,
GIMP_PDB_PROC_TYPE_PLUGIN,
FALSE, xbm_export, NULL, NULL);
gimp_procedure_set_image_types (procedure, "INDEXED");
gimp_procedure_set_menu_label (procedure, _("X BitMap image"));
gimp_procedure_set_documentation (procedure,
_("Export a file in X10 or X11 bitmap "
"(XBM) file format"),
_("X10 or X11 bitmap "
"(XBM) file format. XBM is a lossless "
"format for flat black-and-white "
"(two color indexed) images."),
name);
gimp_procedure_set_attribution (procedure,
"Gordon Matzigkeit",
"Gordon Matzigkeit",
"1998");
gimp_file_procedure_set_format_name (GIMP_FILE_PROCEDURE (procedure),
_("XBM"));
gimp_file_procedure_set_handles_remote (GIMP_FILE_PROCEDURE (procedure),
TRUE);
gimp_file_procedure_set_mime_types (GIMP_FILE_PROCEDURE (procedure),
"image/x-xbitmap");
gimp_file_procedure_set_extensions (GIMP_FILE_PROCEDURE (procedure),
"xbm,icon,bitmap");
gimp_export_procedure_set_capabilities (GIMP_EXPORT_PROCEDURE (procedure),
GIMP_EXPORT_CAN_HANDLE_BITMAP |
GIMP_EXPORT_CAN_HANDLE_ALPHA,
NULL, NULL, NULL);
gimp_procedure_add_boolean_argument (procedure, "save-comment",
_("_Write comment"),
_("Write a comment at the beginning of the file."),
FALSE, /* *NOT* gimp_export_comment() */
G_PARAM_READWRITE);
gimp_procedure_add_string_argument (procedure, "gimp-comment",
_("Co_mment"),
_("Image description (maximum 72 bytes)"),
gimp_get_default_comment (),
G_PARAM_READWRITE);
gimp_procedure_set_argument_sync (procedure, "gimp-comment",
GIMP_ARGUMENT_SYNC_PARASITE);
gimp_procedure_add_boolean_argument (procedure, "x10-format",
_("_X10 format bitmap"),
_("Export in X10 format"),
FALSE,
G_PARAM_READWRITE);
gimp_procedure_add_boolean_argument (procedure, "use-hot-spot",
_("Write hot spot _values"),
_("Write hotspot information"),
FALSE,
G_PARAM_READWRITE);
gimp_procedure_add_int_argument (procedure, "hot-spot-x",
_("Hot s_pot X"),
_("X coordinate of hotspot"),
0, GIMP_MAX_IMAGE_SIZE, 0,
G_PARAM_READWRITE);
gimp_procedure_add_int_argument (procedure, "hot-spot-y",
_("Hot spot _Y"),
_("Y coordinate of hotspot"),
0, GIMP_MAX_IMAGE_SIZE, 0,
G_PARAM_READWRITE);
gimp_procedure_add_string_argument (procedure, "prefix",
_("I_dentifier prefix"),
_("Identifier prefix [determined from filename]"),
"bitmap",
G_PARAM_READWRITE);
gimp_procedure_add_boolean_argument (procedure, "write-mask",
_("Write extra mask _file"),
_("Write extra mask file"),
FALSE,
G_PARAM_READWRITE);
gimp_procedure_add_string_argument (procedure, "mask-suffix",
_("Mas_k file extensions"),
_("Suffix of the mask file"),
"-mask",
G_PARAM_READWRITE);
}
return procedure;
}
static GimpValueArray *
xbm_load (GimpProcedure *procedure,
GimpRunMode run_mode,
GFile *file,
GimpMetadata *metadata,
GimpMetadataLoadFlags *flags,
GimpProcedureConfig *config,
gpointer run_data)
{
GimpValueArray *return_vals;
GimpPDBStatusType status = GIMP_PDB_SUCCESS;
GimpImage *image;
GError *error = NULL;
gegl_init (NULL, NULL);
image = load_image (file, &error);
if (! image)
return gimp_procedure_new_return_values (procedure, status, error);
return_vals = gimp_procedure_new_return_values (procedure,
GIMP_PDB_SUCCESS,
NULL);
GIMP_VALUES_SET_IMAGE (return_vals, 1, image);
return return_vals;
}
static gchar *
init_prefix (GFile *file,
GObject *config)
{
gchar *p, *prefix;
gint len;
prefix = g_file_get_basename (file);
g_object_set (config,
"prefix", NULL,
NULL);
if (prefix)
{
/* Strip any extension. */
p = strrchr (prefix, '.');
if (p && p != prefix)
len = MIN (MAX_PREFIX, p - prefix);
else
len = MAX_PREFIX;
prefix[len] = '\0';
g_object_set (config,
"prefix", prefix,
NULL);
}
return prefix;
}
static GimpValueArray *
xbm_export (GimpProcedure *procedure,
GimpRunMode run_mode,
GimpImage *image,
GFile *file,
GimpExportOptions *options,
GimpMetadata *metadata,
GimpProcedureConfig *config,
gpointer run_data)
{
GimpPDBStatusType status = GIMP_PDB_SUCCESS;
GimpExportReturn export = GIMP_EXPORT_IGNORE;
GList *drawables;
gchar *mask_basename = NULL;
GError *error = NULL;
gegl_init (NULL, NULL);
if (run_mode == GIMP_RUN_INTERACTIVE ||
run_mode == GIMP_RUN_WITH_LAST_VALS)
{
/* Always override the prefix with the filename. */
mask_basename = g_strdup (init_prefix (file, G_OBJECT (config)));
}
export = gimp_export_options_get_image (options, &image);
drawables = gimp_image_list_layers (image);
if (run_mode == GIMP_RUN_INTERACTIVE)
{
GimpParasite *parasite;
gimp_ui_init (PLUG_IN_BINARY);
parasite = gimp_image_get_parasite (image, "hot-spot");
if (parasite)
{
gchar *parasite_data;
guint32 parasite_size;
gint x, y;
parasite_data = (gchar *) gimp_parasite_get_data (parasite, &parasite_size);
parasite_data = g_strndup (parasite_data, parasite_size);
if (sscanf (parasite_data, "%i %i", &x, &y) == 2)
{
g_object_set (config,
"use-hot-spot", TRUE,
"hot-spot-x", x,
"hot-spot-y", y,
NULL);
}
gimp_parasite_free (parasite);
g_free (parasite_data);
}
if (! save_dialog (image, drawables->data, procedure, G_OBJECT (config)))
status = GIMP_PDB_CANCEL;
}
if (status == GIMP_PDB_SUCCESS)
{
GFile *mask_file;
GFile *dir;
gchar *mask_prefix;
gchar *mask_ext;
gchar *prefix;
gchar *temp;
gboolean write_mask;
g_object_get (config,
"prefix", &prefix,
"mask-suffix", &mask_ext,
"write-mask", &write_mask,
NULL);
dir = g_file_get_parent (file);
temp = g_strdup_printf ("%s%s.xbm", mask_basename, mask_ext);
mask_file = g_file_get_child (dir, temp);
g_free (temp);
g_object_unref (dir);
/* Change any non-alphanumeric prefix characters to underscores. */
for (temp = prefix; *temp; temp++)
if (! g_ascii_isalnum (*temp))
*temp = '_';
g_object_set (config,
"prefix", prefix,
NULL);
mask_prefix = g_strdup_printf ("%s%s", prefix, mask_ext);
for (temp = mask_prefix; *temp; temp++)
if (! g_ascii_isalnum (*temp))
*temp = '_';
if (! export_image (file,
prefix,
FALSE,
image, drawables->data,
G_OBJECT (config),
&error)
||
(write_mask &&
! export_image (mask_file,
mask_prefix,
TRUE,
image, drawables->data,
G_OBJECT (config),
&error)))
{
status = GIMP_PDB_EXECUTION_ERROR;
}
g_free (prefix);
g_free (mask_prefix);
g_free (mask_ext);
g_free (mask_basename);
g_object_unref (mask_file);
}
if (export == GIMP_EXPORT_EXPORT)
gimp_image_delete (image);
g_list_free (drawables);
return gimp_procedure_new_return_values (procedure, status, error);
}
/* 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 GimpImage *
load_image (GFile *file,
GError **error)
{
FILE *fp;
GeglBuffer *buffer;
GimpImage *image;
GimpLayer *layer;
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 */
};
gimp_progress_init_printf (_("Opening '%s'"),
gimp_file_get_utf8_name (file));
fp = g_fopen (g_file_peek_path (file), "rb");
if (! fp)
{
g_set_error (error, G_FILE_ERROR, g_file_error_from_errno (errno),
_("Could not open '%s' for reading: %s"),
gimp_file_get_utf8_name (file), g_strerror (errno));
return NULL;
}
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_file_get_utf8_name (file), ftell (fp));
fclose (fp);
return NULL;
}
if (width <= 0)
{
g_message (_("'%s':\nNo image width specified"),
gimp_file_get_utf8_name (file));
fclose (fp);
return NULL;
}
if (width > GIMP_MAX_IMAGE_SIZE)
{
g_message (_("'%s':\nImage width is larger than GIMP can handle"),
gimp_file_get_utf8_name (file));
fclose (fp);
return NULL;
}
if (height <= 0)
{
g_message (_("'%s':\nNo image height specified"),
gimp_file_get_utf8_name (file));
fclose (fp);
return NULL;
}
if (height > GIMP_MAX_IMAGE_SIZE)
{
g_message (_("'%s':\nImage height is larger than GIMP can handle"),
gimp_file_get_utf8_name (file));
fclose (fp);
return NULL;
}
if (intbits == 0)
{
g_message (_("'%s':\nNo image data type specified"),
gimp_file_get_utf8_name (file));
fclose (fp);
return NULL;
}
image = gimp_image_new (width, height, GIMP_INDEXED);
if (comment)
{
GimpParasite *parasite;
parasite = gimp_parasite_new ("gimp-comment",
GIMP_PARASITE_PERSISTENT,
strlen (comment) + 1, (gpointer) comment);
gimp_image_attach_parasite (image, 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, parasite);
gimp_parasite_free (parasite);
}
/* Set a black-and-white colormap. */
gimp_palette_set_colormap (gimp_image_get_palette (image), babl_format ("R'G'B' u8"), (guint8 *) cmap, 2 * 3);
layer = gimp_layer_new (image,
_("Background"),
width, height,
GIMP_INDEXED_IMAGE,
100,
gimp_image_get_default_new_layer_mode (image));
gimp_image_insert_layer (image, layer, NULL, 0);
buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (layer));
/* 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);
/* 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;
}
static gboolean
export_image (GFile *file,
const gchar *prefix,
gboolean save_mask,
GimpImage *image,
GimpDrawable *drawable,
GObject *config,
GError **error)
{
GOutputStream *output;
GeglBuffer *buffer;
GCancellable *cancellable;
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 = NULL;
guchar *cmap;
const gchar *intfmt;
gboolean config_save_comment;
gchar *config_comment;
gint config_x10_format;
gint config_use_hot;
gint config_x_hot;
gint config_y_hot;
g_object_get (config,
"save-comment", &config_save_comment,
"gimp-comment", &config_comment,
"x10-format", &config_x10_format,
"use-hot-spot", &config_use_hot,
"hot-spot-x", &config_x_hot,
"hot-spot-y", &config_y_hot,
NULL);
#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_palette_get_colormap (gimp_image_get_palette (image), babl_format ("R'G'B' u8"), &colors, NULL);
if (! gimp_drawable_is_indexed (drawable) || colors > 2)
{
/* The image is not black-and-white. */
g_message (_("The image which you are trying to export 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);
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);
width = gegl_buffer_get_width (buffer);
height = gegl_buffer_get_height (buffer);
bpp = gimp_drawable_get_bpp (drawable);
/* 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;
}
gimp_progress_init_printf (_("Exporting '%s'"),
gimp_file_get_utf8_name (file));
output = G_OUTPUT_STREAM (g_file_replace (file,
NULL, FALSE, G_FILE_CREATE_NONE,
NULL, error));
if (output)
{
GOutputStream *buffered;
buffered = g_buffered_output_stream_new (output);
g_object_unref (output);
output = buffered;
}
else
{
return FALSE;
}
/* Maybe write the image comment. */
if (config_save_comment && config_comment && *config_comment)
{
if (! print (output, error, "/* %s */\n", config_comment))
goto fail;
}
/* Write out the image height and width. */
if (! print (output, error, "#define %s_width %d\n", prefix, width) ||
! print (output, error, "#define %s_height %d\n", prefix, height))
goto fail;
/* Write out the hotspot, if any. */
if (config_use_hot)
{
if (! print (output, error,
"#define %s_x_hot %d\n", prefix, config_x_hot) ||
! print (output, error,
"#define %s_y_hot %d\n", prefix, config_y_hot))
goto fail;
}
/* Now write the actual data. */
if (config_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";
}
if (! print (output, error,
"static %s %s_bits[] = {\n ",
config_x10_format ? "unsigned short" : "unsigned char", prefix))
goto fail;
/* 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);
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)
{
if (! print (output, error, ","))
goto fail;
}
need_comma = 1;
/* Maybe start a new line. */
if (nints ++ >= lineints)
{
nints = 1;
if (! print (output, error, "\n "))
goto fail;
}
if (! print (output, error, intfmt, c))
goto fail;
/* 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)
{
if (! print (output, error, ","))
goto fail;
}
need_comma = 1;
/* Maybe start a new line. */
if (nints ++ == lineints)
{
nints = 1;
if (! print (output, error, "\n "))
goto fail;
}
if (! print (output, error, intfmt, c))
goto fail;
}
}
gimp_progress_update ((double) (i + tileheight) / (double) height);
}
/* Write the trailer. */
if (! print (output, error, " };\n"))
goto fail;
if (! g_output_stream_close (output, NULL, error))
goto fail;
g_free (data);
g_object_unref (buffer);
g_object_unref (output);
gimp_progress_update (1.0);
return TRUE;
fail:
cancellable = g_cancellable_new ();
g_cancellable_cancel (cancellable);
g_output_stream_close (output, cancellable, NULL);
g_object_unref (cancellable);
g_free (data);
g_object_unref (buffer);
g_object_unref (output);
return FALSE;
}
static gboolean
save_dialog (GimpImage *image,
GimpDrawable *drawable,
GimpProcedure *procedure,
GObject *config)
{
GtkWidget *dialog;
GtkWidget *vbox;
GtkWidget *frame;
GtkWidget *hint;
gboolean run;
dialog = gimp_export_procedure_dialog_new (GIMP_EXPORT_PROCEDURE (procedure),
GIMP_PROCEDURE_CONFIG (config),
image);
/* comment string. */
hint = g_object_new (GIMP_TYPE_HINT_BOX,
"icon-name", GIMP_ICON_DIALOG_WARNING,
"hint", _("Writing a comment will make the XBM "
"file unreadable by some applications.\n"
"The comment will not affect embedding "
"the XBM in C source code."),
NULL);
vbox = gimp_procedure_dialog_fill_box (GIMP_PROCEDURE_DIALOG (dialog),
"comment-vbox", "gimp-comment", NULL);
gtk_box_pack_start (GTK_BOX (vbox), hint, FALSE, FALSE, 0);
gtk_widget_set_visible (hint, TRUE);
gtk_box_reorder_child (GTK_BOX (vbox), hint, 0);
gtk_widget_set_margin_end (hint, 24);
frame = gimp_procedure_dialog_fill_frame (GIMP_PROCEDURE_DIALOG (dialog),
"comment-frame", "save-comment",
FALSE, "comment-vbox");
/* hotspot toggle */
gimp_procedure_dialog_fill_box (GIMP_PROCEDURE_DIALOG (dialog),
"hot-spot-vbox", "hot-spot-x", "hot-spot-y",
NULL);
frame = gimp_procedure_dialog_fill_frame (GIMP_PROCEDURE_DIALOG (dialog),
"hot-spot-frame", "use-hot-spot",
FALSE, "hot-spot-vbox");
/* mask file */
frame = gimp_procedure_dialog_fill_frame (GIMP_PROCEDURE_DIALOG (dialog),
"mask-frame", "write-mask",
FALSE, "mask-suffix");
gtk_widget_set_sensitive (frame, gimp_drawable_has_alpha (drawable));
gimp_procedure_dialog_fill (GIMP_PROCEDURE_DIALOG (dialog),
"x10-format", "prefix", "comment-frame",
"hot-spot-frame", "mask-frame", NULL);
gtk_widget_show (dialog);
run = gimp_procedure_dialog_run (GIMP_PROCEDURE_DIALOG (dialog));
gtk_widget_destroy (dialog);
return run;
}
static gboolean
print (GOutputStream *output,
GError **error,
const gchar *format,
...)
{
va_list args;
gboolean success;
va_start (args, format);
success = g_output_stream_vprintf (output, NULL, NULL,
error, format, args);
va_end (args);
return success;
}
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