Here is a list of all the symbols currently used by the current tools, courtesy of nm tools/*.o paint/*.o | cut -b 10- | grep ^T | cut -b 3- | sort | uniq stdlib, glib, gdk, pango, and gtk calls have been eliminated from this list. The big things that stand out are accessing the global "the_gimp", and calling tile and tile manager functions. "the_gimp" should not be accessed directly, and tile_manager is probably too ugly for tool developers with weak stomachs. Rockwalrus active_color add_alpha_region apply_mask_to_region blend_region brightness_contrast_lut_setup brush_scale_mask brush_scale_pixmap color_balance color_balance_create_lookup_tables color_balance_init color_balance_range_reset color_pixels color_region combine_mask_and_region convolve_region copy_region curves_calculate_curve curves_channel_reset curves_init curves_lut_func find_mask_boundary floating_sel_anchor floating_sel_relax floating_sel_rigor gdisplays_check_valid gimp_base_config_get_type gimp_bezier_stroke_extend gimp_bezier_stroke_get_type gimp_bezier_stroke_new gimp_brush_get_spacing gimp_brush_get_type gimp_brush_select_brush gimp_brush_want_null_motion gimp_bucket_fill_mode_get_type gimp_channel_add_segment gimp_channel_invalidate_bounds gimp_channel_new_mask gimp_channel_ops_get_type gimp_channel_value gimp_color_area_get_type gimp_color_area_new gimp_color_area_set_color gimp_color_panel_get_type gimp_color_panel_set_context gimp_config_connect gimp_config_copy_properties gimp_config_deserialize gimp_config_disconnect gimp_config_duplicate gimp_config_reset gimp_config_serialize gimp_container_add gimp_container_add_handler gimp_container_get_child_by_name gimp_container_remove_handler gimp_container_thaw gimp_context_copy_properties gimp_context_define_properties gimp_context_get_brush gimp_context_get_display gimp_context_get_gradient gimp_context_get_opacity gimp_context_get_paint_mode gimp_context_get_pattern gimp_context_get_tool gimp_context_get_type gimp_context_new gimp_context_set_background gimp_context_set_display gimp_context_set_foreground gimp_context_set_parent gimp_context_set_tool gimp_context_tool_changed gimp_crop_type_get_type gimp_cursor_new gimp_devices_get_current gimp_dialog_create_action_area gimp_dialog_factory_dialog_raise gimp_dialog_get_type gimp_directory gimp_display_config_get_type gimp_display_coords_in_active_drawable gimp_display_flush gimp_display_flush_now gimp_display_get_type gimp_display_shell_draw_guide gimp_display_shell_get_type gimp_display_shell_scale_by_values gimp_display_shell_selection_visibility gimp_display_shell_set_cursor gimp_display_shell_set_override_cursor gimp_display_shell_transform_xy gimp_display_shell_transform_xy_f gimp_display_shell_unset_override_cursor gimp_display_shell_untransform_xy gimp_dock_get_type gimp_double_adjustment_update gimp_drawable_blend gimp_drawable_bucket_fill gimp_drawable_bytes gimp_drawable_calculate_histogram gimp_drawable_data gimp_drawable_get_color_at gimp_drawable_get_type gimp_drawable_has_alpha gimp_drawable_height gimp_drawable_is_indexed gimp_drawable_is_rgb gimp_drawable_mask_bounds gimp_drawable_offsets gimp_drawable_push_undo gimp_drawable_transform_cut gimp_drawable_transform_matrix_perspective gimp_drawable_transform_matrix_rotate_center gimp_drawable_transform_matrix_scale gimp_drawable_transform_matrix_shear gimp_drawable_transform_paste gimp_drawable_transform_tiles_affine gimp_drawable_transform_tiles_flip gimp_drawable_type gimp_drawable_width gimp_enum_option_menu_new gimp_enum_radio_frame_new gimp_get_current_context gimp_get_mod_name_alt gimp_get_mod_name_control gimp_get_type gimp_get_user_context gimp_gradient_get_color_at gimp_gradient_type_get_type gimp_gui_config_get_type gimp_help_connect gimp_help_set_help_data gimp_histogram_box_get_type gimp_histogram_box_new gimp_histogram_calculate gimp_histogram_channel_get_type gimp_histogram_free gimp_histogram_get_count gimp_histogram_get_mean gimp_histogram_get_median gimp_histogram_get_std_dev gimp_histogram_nchannels gimp_histogram_new gimp_histogram_view_get_channel gimp_histogram_view_get_type gimp_histogram_view_new gimp_histogram_view_set_channel gimp_histogram_view_set_histogram gimp_histogram_view_set_range gimp_hls_to_rgb_int gimp_image_active_drawable gimp_image_add_guide gimp_image_add_hguide gimp_image_add_layer gimp_image_add_vectors gimp_image_add_vguide gimp_image_apply_image gimp_image_contiguous_region_by_seed gimp_image_crop gimp_image_crop_auto_shrink gimp_image_delete_guide gimp_image_find_guide gimp_image_floating_sel gimp_image_flush gimp_image_get_active_layer gimp_image_get_background gimp_image_get_color gimp_image_get_foreground gimp_image_get_type gimp_image_map_abort gimp_image_map_apply gimp_image_map_clear gimp_image_map_commit gimp_image_map_get_color_at gimp_image_map_new gimp_image_mask_boundary gimp_image_mask_bounds gimp_image_mask_clear gimp_image_mask_float gimp_image_mask_is_empty gimp_image_mask_select_by_color gimp_image_mask_select_channel gimp_image_mask_select_ellipse gimp_image_mask_select_polygon gimp_image_mask_select_rectangle gimp_image_mask_translate gimp_image_mask_value gimp_image_pick_color gimp_image_pick_correlate_layer gimp_image_projection gimp_image_projection_bytes gimp_image_projection_get_color_at gimp_image_remove_guide gimp_image_replace_image gimp_image_selection_control gimp_image_set_active_layer gimp_image_snap_rectangle gimp_image_transform_color gimp_image_undo gimp_image_undo_freeze gimp_image_undo_group_end gimp_image_undo_group_start gimp_image_undo_push gimp_image_undo_push_image_guide gimp_image_undo_thaw gimp_image_update gimp_image_update_guide gimp_interpolation_type_get_type gimp_item_factory_update gimp_item_get_ID gimp_item_get_image gimp_item_get_type gimp_layer_get_linked gimp_layer_get_mask gimp_layer_get_type gimp_layer_is_floating_sel gimp_layer_set_linked gimp_layer_translate gimp_list_get_type gimp_list_new gimp_lut_free gimp_lut_new gimp_lut_process gimp_lut_process_2 gimp_lut_setup gimp_lut_setup_exact gimp_matrix3_duplicate gimp_matrix3_identity gimp_matrix3_invert gimp_matrix3_transform_point gimp_menu_item_update gimp_object_get_type gimp_object_set_name gimp_option_menu_new gimp_option_menu_new2 gimp_option_menu_set_history gimp_option_menu_set_sensitive gimp_orientation_type_get_type gimp_paint_info_get_type gimp_paint_info_new gimp_param_spec_unit gimp_progress_end gimp_progress_start gimp_progress_update_and_flush gimp_prop_boolean_radio_frame_new gimp_prop_check_button_new gimp_prop_color_button_new gimp_prop_enum_option_menu_new gimp_prop_enum_radio_frame_new gimp_prop_enum_stock_box_new gimp_prop_font_selection_new gimp_prop_opacity_entry_new gimp_prop_paint_mode_menu_new gimp_prop_preview_new gimp_prop_scale_entry_new gimp_prop_spin_button_new gimp_prop_text_buffer_new gimp_prop_unit_menu_new gimp_radio_button_update gimp_radio_group_set_active gimp_rect_select_mode_get_type gimp_repeat_mode_get_type gimp_rgb_get_uchar gimp_rgb_set_uchar gimp_rgb_to_hls_int gimp_rgba_get_uchar gimp_rgba_set gimp_rgba_set_uchar gimp_scale_entry_new gimp_scan_convert_add_points gimp_scan_convert_free gimp_scan_convert_new gimp_scan_convert_to_channel gimp_set_busy gimp_size_entry_add_field gimp_size_entry_get_refval gimp_size_entry_get_type gimp_size_entry_get_unit gimp_size_entry_set_refval gimp_size_entry_set_refval_boundaries gimp_size_entry_set_resolution gimp_size_entry_set_size gimp_size_entry_set_unit gimp_standard_help_func gimp_statusbar_get_type gimp_statusbar_pop gimp_statusbar_push gimp_statusbar_push_coords gimp_stroke_anchor_get gimp_stroke_anchor_move_absolute gimp_stroke_anchor_select gimp_stroke_get_draw_anchors gimp_stroke_get_draw_controls gimp_stroke_get_draw_lines gimp_stroke_interpolate gimp_table_attach_aligned gimp_table_attach_stock gimp_text_editor_new gimp_text_get_type gimp_text_layer_get_text gimp_text_layer_get_type gimp_text_layer_new gimp_toggle_button_update gimp_transfer_mode_get_type gimp_transform_direction_get_type gimp_transform_grid_type_get_type gimp_transform_tool_grid_density_changed gimp_transform_tool_show_path_changed gimp_unit_get_digits gimp_unit_get_factor gimp_unit_get_symbol gimp_unit_menu_get_type gimp_unit_menu_new gimp_unit_menu_set_unit gimp_unit_menu_update gimp_unset_busy gimp_vector2_inner_product gimp_vector2_length gimp_vectors_anchor_get gimp_vectors_get_type gimp_vectors_new gimp_vectors_stroke_add gimp_vectors_stroke_get_next gimp_viewable_dialog_get_type gimp_viewable_dialog_new gimp_viewable_dialog_set_viewable gimp_viewable_get_stock_id gimp_viewable_get_type gimp_viewable_invalidate_preview gimp_zoom_type_get_type hue_saturation hue_saturation_calculate_transfers hue_saturation_init hue_saturation_partition_reset info_dialog_add_label info_dialog_add_scale info_dialog_add_sizeentry info_dialog_add_spinbutton info_dialog_free info_dialog_new info_dialog_popdown info_dialog_popup info_dialog_update levels_auto levels_calculate_transfers levels_channel_reset levels_init levels_lut_func mask_buf_data mask_buf_free mask_buf_new path_curve_cleanup_segment path_curve_drag_handle path_curve_drag_segment path_curve_draw_segment path_curve_flip_segment path_curve_get_point path_curve_init_segment path_curve_insert_anchor path_curve_on_handle path_curve_on_segment path_transform_current_path path_transform_do_undo path_transform_draw_current path_transform_free_undo path_transform_start_undo path_transform_xy paths_dialog_set_default_op paths_first_button_press paths_new_bezier_select_tool paths_newpoint_current pixel_region_init pixel_region_set_row pixel_regions_process pixel_regions_register posterize_lut_setup procedural_db_destroy_args procedural_db_run_proc temp_buf_data temp_buf_data_clear temp_buf_free temp_buf_resize the_gimp threshold tile_data_pointer tile_eheight tile_ewidth tile_is_valid tile_manager_destroy tile_manager_get_offsets tile_manager_get_tile tile_manager_get_tile_coordinates tile_manager_get_user_data tile_manager_height tile_manager_map_tile tile_manager_new tile_manager_set_user_data tile_manager_set_validate_proc tile_manager_width tile_release tile_size
