/** * gimp_scanner_parse_color: * @scanner: A #GScanner created by gimp_scanner_new_file() or * gimp_scanner_new_string() * @dest: Pointer to a color to store the result * * Return value: %TRUE on success * * Since: 2.4 **/ gboolean gimp_scanner_parse_color (GScanner *scanner, GimpRGB *dest) { guint scope_id; guint old_scope_id; GTokenType token; GimpRGB color = { 0.0, 0.0, 0.0, 1.0 }; scope_id = g_quark_from_static_string ("gimp_scanner_parse_color"); old_scope_id = g_scanner_set_scope (scanner, scope_id); if (! g_scanner_scope_lookup_symbol (scanner, scope_id, "color-rgb")) { g_scanner_scope_add_symbol (scanner, scope_id, "color-rgb", GINT_TO_POINTER (COLOR_RGB)); g_scanner_scope_add_symbol (scanner, scope_id, "color-rgba", GINT_TO_POINTER (COLOR_RGBA)); g_scanner_scope_add_symbol (scanner, scope_id, "color-hsv", GINT_TO_POINTER (COLOR_HSV)); g_scanner_scope_add_symbol (scanner, scope_id, "color-hsva", GINT_TO_POINTER (COLOR_HSVA)); } token = G_TOKEN_LEFT_PAREN; while (g_scanner_peek_next_token (scanner) == token) { token = g_scanner_get_next_token (scanner); switch (token) { case G_TOKEN_LEFT_PAREN: token = G_TOKEN_SYMBOL; break; case G_TOKEN_SYMBOL: { gdouble col[4] = { 0.0, 0.0, 0.0, 1.0 }; gint n_channels = 4; gboolean is_hsv = FALSE; gint i; switch (GPOINTER_TO_INT (scanner->value.v_symbol)) { case COLOR_RGB: n_channels = 3; /* fallthrough */ case COLOR_RGBA: break; case COLOR_HSV: n_channels = 3; /* fallthrough */ case COLOR_HSVA: is_hsv = TRUE; break; } token = G_TOKEN_FLOAT; for (i = 0; i < n_channels; i++) { gboolean negate = FALSE; if (g_scanner_peek_next_token (scanner) == '-') { negate = TRUE; g_scanner_get_next_token (scanner); } if (! gimp_scanner_parse_float (scanner, &col[i])) goto finish; if (negate) col[i] = - col[i]; } if (is_hsv) { GimpHSV hsv; gimp_hsva_set (&hsv, col[0], col[1], col[2], col[3]); gimp_hsv_clamp (&hsv); gimp_hsv_to_rgb (&hsv, &color); } else { gimp_rgba_set (&color, col[0], col[1], col[2], col[3]); gimp_rgb_clamp (&color); } token = G_TOKEN_RIGHT_PAREN; } break; case G_TOKEN_RIGHT_PAREN: token = G_TOKEN_NONE; /* indicates success */ goto finish; default: /* do nothing */ break; } } finish: if (token != G_TOKEN_NONE) { g_scanner_get_next_token (scanner); g_scanner_unexp_token (scanner, token, NULL, NULL, NULL, _("fatal parse error"), TRUE); } else { *dest = color; } g_scanner_set_scope (scanner, old_scope_id); return (token == G_TOKEN_NONE); }
GList * gimp_palette_load_aco (const gchar *filename, GError **error) { GimpPalette *palette; gchar *palette_name; gint fd; gint format_version; gint number_of_colors; gint i; gchar header[4]; gchar color_info[10]; gchar format2_preamble[4]; gint status; g_return_val_if_fail (filename != NULL, NULL); g_return_val_if_fail (g_path_is_absolute (filename), NULL); g_return_val_if_fail (error == NULL || *error == NULL, NULL); fd = g_open (filename, O_RDONLY | _O_BINARY, 0); if (! fd) { 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 NULL; } palette_name = g_filename_display_basename (filename); palette = GIMP_PALETTE (gimp_palette_new (palette_name)); g_free (palette_name); status = read(fd, header, sizeof (header)); if (status < 0) { close(fd); return g_list_prepend (NULL, palette); } format_version = header[1] + (header[0] << 8); number_of_colors = header[3] + (header[2] << 8); for (i = 0; i < number_of_colors; i++) { gint color_space; gint w, x, y, z; gboolean color_ok = FALSE; GimpRGB color; read (fd, color_info, sizeof (color_info)); color_space = color_info[1] + (color_info[0] << 8); w = (guchar) color_info[3] + ((guchar) color_info[2] << 8); x = (guchar) color_info[5] + ((guchar) color_info[4] << 8); y = (guchar) color_info[7] + ((guchar) color_info[6] << 8); z = (guchar) color_info[9] + ((guchar) color_info[8] << 8); if (color_space == 0) /* RGB */ { gdouble R = ((gdouble) w) / 65536.0; gdouble G = ((gdouble) x) / 65536.0; gdouble B = ((gdouble) y) / 65536.0; gimp_rgba_set (&color, R, G, B, 1.0); color_ok = TRUE; } else if (color_space == 1) /* HSV */ { GimpHSV hsv; gdouble H = ((gdouble) w) / 65536.0; gdouble S = ((gdouble) x) / 65536.0; gdouble V = ((gdouble) y) / 65536.0; gimp_hsva_set (&hsv, H, S, V, 1.0); gimp_hsv_to_rgb (&hsv, &color); color_ok = TRUE; } else if (color_space == 2) /* CMYK */ { GimpCMYK cmyk; gdouble C = 1.0 - (((gdouble) w) / 65536.0); gdouble M = 1.0 - (((gdouble) x) / 65536.0); gdouble Y = 1.0 - (((gdouble) y) / 65536.0); gdouble K = 1.0 - (((gdouble) z) / 65536.0); gimp_cmyka_set (&cmyk, C, M, Y, K, 1.0); gimp_cmyk_to_rgb (&cmyk, &color); color_ok = TRUE; } else if (color_space == 8) /* Grayscale */ { gdouble K = 1.0 - (((gdouble) w) / 10000.0); gimp_rgba_set (&color, K, K, K, 1.0); color_ok = TRUE; } else if (color_space == 9) /* Wide? CMYK */ { GimpCMYK cmyk; gdouble C = 1.0 - (((gdouble) w) / 10000.0); gdouble M = 1.0 - (((gdouble) x) / 10000.0); gdouble Y = 1.0 - (((gdouble) y) / 10000.0); gdouble K = 1.0 - (((gdouble) z) / 10000.0); gimp_cmyka_set (&cmyk, C, M, Y, K, 1.0); gimp_cmyk_to_rgb (&cmyk, &color); color_ok = TRUE; } else { g_printerr ("Unsupported color space (%d) in ACO file %s\n", color_space, gimp_filename_to_utf8 (filename)); } if (format_version == 2) { gint number_of_chars; read (fd, format2_preamble, sizeof (format2_preamble)); number_of_chars = format2_preamble[3] + (format2_preamble[2] << 8); lseek (fd, number_of_chars * 2, SEEK_SET); } if (color_ok) gimp_palette_add_entry (palette, -1, NULL, &color); } close(fd); return g_list_prepend (NULL, palette); }
GList * gimp_palette_load_aco (GimpContext *context, GFile *file, GInputStream *input, GError **error) { GimpPalette *palette; gchar *palette_name; gint format_version; gint number_of_colors; gint i; gchar header[4]; gsize bytes_read; g_return_val_if_fail (G_IS_FILE (file), NULL); g_return_val_if_fail (G_IS_INPUT_STREAM (input), NULL); g_return_val_if_fail (error == NULL || *error == NULL, NULL); if (! g_input_stream_read_all (input, header, sizeof (header), &bytes_read, NULL, error) || bytes_read != sizeof (header)) { g_prefix_error (error, _("Could not read header from palette file '%s': "), gimp_file_get_utf8_name (file)); return NULL; } palette_name = g_path_get_basename (gimp_file_get_utf8_name (file)); palette = GIMP_PALETTE (gimp_palette_new (context, palette_name)); g_free (palette_name); format_version = header[1] + (header[0] << 8); number_of_colors = header[3] + (header[2] << 8); for (i = 0; i < number_of_colors; i++) { gchar color_info[10]; gint color_space; gint w, x, y, z; gboolean color_ok = FALSE; GimpRGB color; GError *my_error = NULL; if (! g_input_stream_read_all (input, color_info, sizeof (color_info), &bytes_read, NULL, &my_error) || bytes_read != sizeof (color_info)) { if (palette->colors) { g_message (_("Reading palette file '%s': " "Read %d colors from truncated file: %s"), gimp_file_get_utf8_name (file), g_list_length (palette->colors), my_error ? my_error->message : _("Premature end of file.")); g_clear_error (&my_error); break; } g_propagate_error (error, my_error); g_object_unref (palette); return NULL; } color_space = color_info[1] + (color_info[0] << 8); w = (guchar) color_info[3] + ((guchar) color_info[2] << 8); x = (guchar) color_info[5] + ((guchar) color_info[4] << 8); y = (guchar) color_info[7] + ((guchar) color_info[6] << 8); z = (guchar) color_info[9] + ((guchar) color_info[8] << 8); if (color_space == 0) /* RGB */ { gdouble R = ((gdouble) w) / 65536.0; gdouble G = ((gdouble) x) / 65536.0; gdouble B = ((gdouble) y) / 65536.0; gimp_rgba_set (&color, R, G, B, 1.0); color_ok = TRUE; } else if (color_space == 1) /* HSV */ { GimpHSV hsv; gdouble H = ((gdouble) w) / 65536.0; gdouble S = ((gdouble) x) / 65536.0; gdouble V = ((gdouble) y) / 65536.0; gimp_hsva_set (&hsv, H, S, V, 1.0); gimp_hsv_to_rgb (&hsv, &color); color_ok = TRUE; } else if (color_space == 2) /* CMYK */ { GimpCMYK cmyk; gdouble C = 1.0 - (((gdouble) w) / 65536.0); gdouble M = 1.0 - (((gdouble) x) / 65536.0); gdouble Y = 1.0 - (((gdouble) y) / 65536.0); gdouble K = 1.0 - (((gdouble) z) / 65536.0); gimp_cmyka_set (&cmyk, C, M, Y, K, 1.0); gimp_cmyk_to_rgb (&cmyk, &color); color_ok = TRUE; } else if (color_space == 8) /* Grayscale */ { gdouble K = 1.0 - (((gdouble) w) / 10000.0); gimp_rgba_set (&color, K, K, K, 1.0); color_ok = TRUE; } else if (color_space == 9) /* Wide? CMYK */ { GimpCMYK cmyk; gdouble C = 1.0 - (((gdouble) w) / 10000.0); gdouble M = 1.0 - (((gdouble) x) / 10000.0); gdouble Y = 1.0 - (((gdouble) y) / 10000.0); gdouble K = 1.0 - (((gdouble) z) / 10000.0); gimp_cmyka_set (&cmyk, C, M, Y, K, 1.0); gimp_cmyk_to_rgb (&cmyk, &color); color_ok = TRUE; } else { g_printerr ("Unsupported color space (%d) in ACO file %s\n", color_space, gimp_file_get_utf8_name (file)); } if (format_version == 2) { gchar format2_preamble[4]; gint number_of_chars; if (! g_input_stream_read_all (input, format2_preamble, sizeof (format2_preamble), &bytes_read, NULL, error) || bytes_read != sizeof (format2_preamble)) { g_object_unref (palette); return NULL; } number_of_chars = format2_preamble[3] + (format2_preamble[2] << 8); if (! g_seekable_seek (G_SEEKABLE (input), number_of_chars * 2, G_SEEK_SET, NULL, error)) { g_object_unref (palette); return NULL; } } if (color_ok) gimp_palette_add_entry (palette, -1, NULL, &color); } return g_list_prepend (NULL, palette); }