diff options
Diffstat (limited to '')
| -rw-r--r-- | plug-ins/common/file-xbm.c | 1445 |
1 files changed, 1445 insertions, 0 deletions
diff --git a/plug-ins/common/file-xbm.c b/plug-ins/common/file-xbm.c new file mode 100644 index 0000000..5ab3b00 --- /dev/null +++ b/plug-ins/common/file-xbm.c @@ -0,0 +1,1445 @@ +/* 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. + */ + +/* 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 export 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 (GFile *file, + const gchar *prefix, + const gchar *comment, + gboolean save_mask, + gint32 image_ID, + gint32 drawable_ID, + GError **error); +static gboolean save_dialog (gint32 drawable_ID); + +static gboolean print (GOutputStream *output, + GError **error, + const gchar *format, + ...) G_GNUC_PRINTF (3, 4); + +#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 export" }, + { GIMP_PDB_STRING, "filename", "The name of the file to export" }, + { GIMP_PDB_STRING, "raw-filename", "The name entered" }, + { GIMP_PDB_STRING, "comment", "Image description (maximum 72 bytes)" }, + { GIMP_PDB_INT32, "x10", "Export 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, + "Export a file in X10 or X11 bitmap (XBM) file format", + "Export 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_file_handler_uri (SAVE_PROC); + 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_basename = 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_basename = 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_basename = 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) + { + GFile *file = g_file_new_for_uri (param[3].data.d_string); + GFile *mask_file; + GFile *dir; + gchar *mask_prefix; + gchar *temp; + + dir = g_file_get_parent (file); + temp = g_strdup_printf ("%s%s.xbm", mask_basename, xsvals.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 = 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 (file, + xsvals.prefix, + xsvals.comment, + FALSE, + image_ID, drawable_ID, + &error) + + && (! xsvals.write_mask || + save_image (mask_file, + 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_basename); + + g_object_unref (file); + g_object_unref (mask_file); + } + + 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 */ + }; + + gimp_progress_init_printf (_("Opening '%s'"), + gimp_filename_to_utf8 (filename)); + + 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; + } + + 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)); + fclose (fp); + return -1; + } + + if (width <= 0) + { + g_message (_("'%s':\nNo image width specified"), + gimp_filename_to_utf8 (filename)); + fclose (fp); + return -1; + } + + if (width > GIMP_MAX_IMAGE_SIZE) + { + g_message (_("'%s':\nImage width is larger than GIMP can handle"), + gimp_filename_to_utf8 (filename)); + fclose (fp); + return -1; + } + + if (height <= 0) + { + g_message (_("'%s':\nNo image height specified"), + gimp_filename_to_utf8 (filename)); + fclose (fp); + return -1; + } + + if (height > GIMP_MAX_IMAGE_SIZE) + { + g_message (_("'%s':\nImage height is larger than GIMP can handle"), + gimp_filename_to_utf8 (filename)); + fclose (fp); + return -1; + } + + if (intbits == 0) + { + g_message (_("'%s':\nNo image data type specified"), + gimp_filename_to_utf8 (filename)); + fclose (fp); + 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_image_get_default_new_layer_mode (image_ID)); + 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 (GFile *file, + const gchar *prefix, + const gchar *comment, + gboolean save_mask, + gint32 image_ID, + gint32 drawable_ID, + 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; + +#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 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_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; + } + + 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 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) + { + if (! print (output, error, "/* %s */\n", comment)) + goto fail; + } +#endif + + /* 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 (xsvals.use_hot) + { + if (! print (output, error, + "#define %s_x_hot %d\n", prefix, xsvals.x_hot) || + ! print (output, error, + "#define %s_y_hot %d\n", prefix, xsvals.y_hot)) + goto fail; + } + + /* 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"; + } + + if (! print (output, error, + "static %s %s_bits[] = {\n ", + xsvals.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); + +#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) + { + 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 (gint32 drawable_ID) +{ + GtkWidget *dialog; + GtkWidget *frame; + GtkWidget *vbox; + GtkWidget *toggle; + GtkWidget *table; + GtkWidget *entry; + GtkWidget *spinbutton; + GtkAdjustment *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); + + adj = (GtkAdjustment *) + gtk_adjustment_new (xsvals.x_hot, 0, + gimp_drawable_width (drawable_ID) - 1, + 1, 10, 0); + spinbutton = gimp_spin_button_new (adj, 1.0, 0); + gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (spinbutton), TRUE); + 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); + + adj = (GtkAdjustment *) + gtk_adjustment_new (xsvals.y_hot, 0, + gimp_drawable_height (drawable_ID) - 1, + 1, 10, 0); + spinbutton = gimp_spin_button_new (adj, 1.0, 0); + gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (spinbutton), TRUE); + 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; +} + +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; +} + +/* 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); +} |