view src/scrollbar-x.c @ 2720:6fa9919a9a0b

[xemacs-hg @ 2005-04-08 23:10:01 by crestani] ChangeLog addition: 2005-04-01  Marcus Crestani  <crestani@xemacs.org>         The new allocator.         New configure flag: `MC_ALLOC':         * configure.ac (XE_COMPLEX_ARG_ENABLE): Add `--enable-mc-alloc' as         a new configure flag.         * configure.in (AC_INIT_PARSE_ARGS): Add `--mc-alloc' as a new         configure flag.         * configure.usage: Add description for `mc-alloc'.         DUMP_IN_EXEC:         * Makefile.in.in: Condition the installation of a separate dump         file on !DUMP_ON_EXEC.         * configure.ac (XE_COMPLEX_ARG_ENABLE): Add         `--enable-dump-in-exec' as a new configure flag.         * configure.ac: DUMP_IN_EXEC is define as default for PDUMP but         not default for MC_ALLOC.         * configure.in (AC_INIT_PARSE_ARGS): Add `--dump-in-exec' as a         new configure flag.         * configure.in: DUMP_IN_EXEC is define as default for PDUMP but         not default for MC_ALLOC.         * configure.usage: Add description for `dump-in-exec'. lib-src/ChangeLog addition: 2005-04-01  Marcus Crestani  <crestani@xemacs.org>         The new allocator.         DUMP_IN_EXEC:                  * Makefile.in.in: Only compile insert-data-in-exec if         DUMP_IN_EXEC is defined. lisp/ChangeLog addition: 2005-04-01  Marcus Crestani  <crestani@xemacs.org>         The new allocator.         MEMORY_USAGE_STATS         * diagnose.el: Add new lisp function to pretty print statistics         about the new allocator.         * diagnose.el (show-mc-alloc-memory-usage): New. modules/ChangeLog addition: 2005-04-01  Marcus Crestani  <crestani@xemacs.org>         The new allocator.         Remove Lcrecords:                  * postgresql/postgresql.c (allocate_pgconn): Allocate with new         allocator.         * postgresql/postgresql.c (allocate_pgresult): Allocate PGresult         with new allocator.           * postgresql/postgresql.h (struct Lisp_PGconn): Add         lrecord_header.         * postgresql/postgresql.h (struct Lisp_PGresult): Add         lrecord_header.         * ldap/eldap.c (allocate_ldap): Allocate with new allocator.         * ldap/eldap.h (struct Lisp_LDAP): Add lrecord_header. nt/ChangeLog addition: 2005-04-01  Marcus Crestani  <crestani@xemacs.org>         The new allocator.         New configure flag: `MC_ALLOC':         * config.inc.samp: Add new flag `MC_ALLOC'.         * xemacs.mak: Add flag and configuration output for `MC_ALLOC'.         New files:         * xemacs.dsp: Add source files mc-alloc.c and mc-alloc.h.         * xemacs.mak: Add new object file mc-alloc.obj to dependencies. src/ChangeLog addition: 2005-04-01  Marcus Crestani  <crestani@xemacs.org>         The new allocator.         New configure flag: `MC_ALLOC':         * config.h.in: Add new flag `MC_ALLOC'.         New files:         * Makefile.in.in: Add new object file mc-alloc.o.         * depend: Add new files to dependencies.         * mc-alloc.c: New.         * mc-alloc.h: New.         Running the new allocator from XEmacs:         * alloc.c (deadbeef_memory): Moved to mc-alloc.c.         * emacs.c (main_1): Initialize the new allocator and add         syms_of_mc_alloc.         * symsinit.h: Add syms_of_mc_alloc.         New lrecord allocation and free functions:         * alloc.c (alloc_lrecord): New. Allocates an lrecord, includes         type checking and initializing of the lrecord_header.         * alloc.c (noseeum_alloc_lrecord): Same as above, but increments         the NOSEEUM cons counter.         * alloc.c (free_lrecord): New. Calls the finalizer and frees the         lrecord.         * lrecord.h: Add lrecord allocation prototypes and comments.         Remove old lrecord FROB block allocation:                  * alloc.c (allocate_lisp_storage): Former function to expand         heap. Not needed anymore, remove.         * alloc.c: Completely remove `Fixed-size type macros'         * alloc.c (release_breathing_space): Remove.         * alloc.c (memory_full): Remove release_breathing_space.         * alloc.c (refill_memory_reserve): Remove.         * alloc.c (TYPE_ALLOC_SIZE): Remove.         * alloc.c (DECLARE_FIXED_TYPE_ALLOC): Remove.         * alloc.c (ALLOCATE_FIXED_TYPE_FROM_BLOCK): Remove.         * alloc.c (ALLOCATE_FIXED_TYPE_1): Remove.         * alloc.c (ALLOCATE_FIXED_TYPE): Remove.         * alloc.c (NOSEEUM_ALLOCATE_FIXED_TYPE): Remove.         * alloc.c (struct Lisp_Free): Remove.         * alloc.c (LRECORD_FREE_P): Remove.         * alloc.c (MARK_LRECORD_AS_FREE): Remove.         * alloc.c (MARK_LRECORD_AS_NOT_FREE): Remove.         * alloc.c (PUT_FIXED_TYPE_ON_FREE_LIST): Remove.         * alloc.c (FREE_FIXED_TYPE): Remove.         * alloc.c (FREE_FIXED_TYPE_WHEN_NOT_IN_GC): Remove.         Allocate old lrecords with new allocator:                  * alloc.c: DECLARE_FIXED_TYPE_ALLOC removed for all lrecords         defined in alloc.c.         * alloc.c (Fcons): Allocate with new allocator.         * alloc.c (noseeum_cons): Allocate with new allocator.         * alloc.c (make_float): Allocate with new allocator.         * alloc.c (make_bignum): Allocate with new allocator.         * alloc.c (make_bignum_bg): Allocate with new allocator.         * alloc.c (make_ratio): Allocate with new allocator.         * alloc.c (make_ratio_bg): Allocate with new allocator.         * alloc.c (make_ratio_rt): Allocate with new allocator.         * alloc.c (make_bigfloat): Allocate with new allocator.         * alloc.c (make_bigfloat_bf): Allocate with new allocator.         * alloc.c (make_compiled_function): Allocate with new allocator.         * alloc.c (Fmake_symbol): Allocate with new allocator.         * alloc.c (allocate_extent): Allocate with new allocator.         * alloc.c (allocate_event): Allocate with new allocator.         * alloc.c (make_key_data): Allocate with new allocator.         * alloc.c (make_button_data): Allocate with new allocator.         * alloc.c (make_motion_data): Allocate with new allocator.         * alloc.c (make_process_data): Allocate with new allocator.         * alloc.c (make_timeout_data): Allocate with new allocator.         * alloc.c (make_magic_data): Allocate with new allocator.         * alloc.c (make_magic_eval_data): Allocate with new allocator.         * alloc.c (make_eval_data): Allocate with new allocator.         * alloc.c (make_misc_user_data): Allocate with new allocator.         * alloc.c (Fmake_marker): Allocate with new allocator.         * alloc.c (noseeum_make_marker): Allocate with new allocator.         * alloc.c (make_uninit_string): Allocate with new allocator.         * alloc.c (resize_string): Allocate with new allocator.         * alloc.c (make_string_nocopy): Allocate with new allocator.         Garbage Collection:         * alloc.c (GC_CHECK_NOT_FREE): Remove obsolete assertions.         * alloc.c (SWEEP_FIXED_TYPE_BLOCK): Remove.         * alloc.c (SWEEP_FIXED_TYPE_BLOCK_1): Remove.         * alloc.c (sweep_conses): Remove.         * alloc.c (free_cons): Use new allocator to free.         * alloc.c (sweep_compiled_functions): Remove.         * alloc.c (sweep_floats): Remove.         * alloc.c (sweep_bignums): Remove.         * alloc.c (sweep_ratios): Remove.         * alloc.c (sweep_bigfloats): Remove.         * alloc.c (sweep_symbols): Remove.         * alloc.c (sweep_extents): Remove.         * alloc.c (sweep_events): Remove.         * alloc.c (sweep_key_data): Remove.         * alloc.c (free_key_data): Use new allocator to free.         * alloc.c (sweep_button_data): Remove.         * alloc.c (free_button_data): Use new allocator to free.         * alloc.c (sweep_motion_data): Remove.         * alloc.c (free_motion_data): Use new allocator to free.         * alloc.c (sweep_process_data): Remove.         * alloc.c (free_process_data): Use new allocator to free.         * alloc.c (sweep_timeout_data): Remove.         * alloc.c (free_timeout_data): Use new allocator to free.         * alloc.c (sweep_magic_data): Remove.         * alloc.c (free_magic_data): Use new allocator to free.         * alloc.c (sweep_magic_eval_data): Remove.         * alloc.c (free_magic_eval_data): Use new allocator to free.         * alloc.c (sweep_eval_data): Remove.         * alloc.c (free_eval_data): Use new allocator to free.         * alloc.c (sweep_misc_user_data): Remove.         * alloc.c (free_misc_user_data): Use new allocator to free.         * alloc.c (sweep_markers): Remove.         * alloc.c (free_marker): Use new allocator to free.         * alloc.c (garbage_collect_1): Remove release_breathing_space.         * alloc.c (gc_sweep): Remove all the old lcrecord and lrecord         related stuff. Sweeping now works like this: compact string         chars, finalize, sweep.         * alloc.c (common_init_alloc_early): Remove old lrecord         initializations, remove breathing_space.         * emacs.c (Fdump_emacs): Remove release_breathing_space.         * lisp.h: Remove prototype for release_breathing_space.         * lisp.h: Adjust the special cons mark makros.         Lrecord Finalizer:         * alloc.c: Add finalizer to lrecord definition.         * alloc.c (finalize_string): Add finalizer for string.         * bytecode.c: Add finalizer to lrecord definition.         * bytecode.c (finalize_compiled_function): Add finalizer for         compiled function.         * marker.c: Add finalizer to lrecord definition.         * marker.c (finalize_marker): Add finalizer for marker.         These changes build the interface to mc-alloc:         * lrecord.h (MC_ALLOC_CALL_FINALIZER): Tell mc-alloc how to         finalize lrecords.         * lrecord.h (MC_ALLOC_CALL_FINALIZER_FOR_DISKSAVE): Tell         mc-alloc how to finalize for disksave.         Unify lrecords and lcrecords:         * lisp.h (struct Lisp_String): Adjust string union hack to         new lrecord header.         * lrecord.h: Adjust comments.         * lrecord.h (struct lrecord_header): The new lrecord header         includes type, lisp-readonly, free, and uid.         * lrecord.h (set_lheader_implementation): Adjust to new         lrecord_header.         * lrecord.h (struct lrecord_implementation): The field basic_p         for indication of an old lrecord is not needed anymore, remove.         * lrecord.h (MAKE_LRECORD_IMPLEMENTATION): Remove basic_p.         * lrecord.h (MAKE_EXTERNAL_LRECORD_IMPLEMENTATION): Remove         basic_p.         * lrecord.h (copy_sized_lrecord): Remove distinction between         old lrecords and lcrecords.         * lrecord.h (copy_lrecord): Remove distinction between old         lrecords and lcrecords.         * lrecord.h (zero_sized_lrecord): Remove distinction between         old lrecords and lcrecords.         * lrecord.h (zero_lrecord): Remove distinction between old         lrecords and lcrecords.         Remove lcrecords and lcrecord lists:         * alloc.c (basic_alloc_lcrecord): Not needed anymore, remove.         * alloc.c (very_old_free_lcrecord): Not needed anymore, remove.         * alloc.c (copy_lisp_object): No more distinction between         lrecords and lcrecords.         * alloc.c (all_lcrecords): Not needed anymore, remove.         * alloc.c (make_vector_internal): Allocate as lrecord.         * alloc.c (make_bit_vector_internal): Allocate as lrecord.         * alloc.c: Completely remove `lcrecord lists'.         * alloc.c (free_description): Remove.         * alloc.c (lcrecord_list_description): Remove.         * alloc.c (mark_lcrecord_list): Remove.         * alloc.c (make_lcrecord_list): Remove.         * alloc.c (alloc_managed_lcrecord): Remove.         * alloc.c (free_managed_lcrecord): Remove.         * alloc.c (alloc_automanaged_lcrecord): Remove.         * alloc.c (free_lcrecord): Remove.         * alloc.c (lcrecord_stats): Remove.         * alloc.c (tick_lcrecord_stats): Remove.         * alloc.c (disksave_object_finalization_1): Add call to         mc_finalize_for_disksave. Remove the lcrecord way to visit all         objects.         * alloc.c (kkcc_marking): Remove XD_FLAG_FREE_LISP_OBJECT         * alloc.c (sweep_lcrecords_1): Remove.         * alloc.c (common_init_alloc_early): Remove everything related         to lcrecords, remove old lrecord initializations,         * alloc.c (init_lcrecord_lists): Not needed anymore, remove.         * alloc.c (reinit_alloc_early): Remove everything related to         lcrecords.         * alloc.c (init_alloc_once_early): Remove everything related to         lcrecords.         * buffer.c (allocate_buffer): Allocate as lrecord.         * buffer.c (nuke_all_buffer_slots): Use lrecord functions.         * buffer.c (common_init_complex_vars_of_buffer): Allocate as         lrecord.         * buffer.h (struct buffer): Add lrecord_header.         * casetab.c (allocate_case_table): Allocate as lrecord.         * casetab.h (struct Lisp_Case_Table): Add lrecord_header.         * charset.h (struct Lisp_Charset): Add lrecord_header.         * chartab.c (fill_char_table): Use lrecord functions.         * chartab.c (Fmake_char_table): Allocate as lrecord.         * chartab.c (make_char_table_entry): Allocate as lrecord.         * chartab.c (copy_char_table_entry): Allocate as lrecord.         * chartab.c (Fcopy_char_table): Allocate as lrecord.         * chartab.c (put_char_table): Use lrecord functions.         * chartab.h (struct Lisp_Char_Table_Entry): Add lrecord_header.         * chartab.h (struct Lisp_Char_Table): Add lrecord_header.         * console-impl.h (struct console): Add lrecord_header.         * console-msw-impl.h (struct Lisp_Devmode): Add lrecord_header.         * console-msw-impl.h (struct mswindows_dialog_id): Add         lrecord_header.         * console.c (allocate_console): Allocate as lrecord.         * console.c (nuke_all_console_slots): Use lrecord functions.         * console.c (common_init_complex_vars_of_console): Allocate as         lrecord.         * data.c (make_weak_list): Allocate as lrecord.         * data.c (make_weak_box): Allocate as lrecord.         * data.c (make_ephemeron): Allocate as lrecord.         * database.c (struct Lisp_Database): Add lrecord_header.         * database.c (allocate_database): Allocate as lrecord.         * device-impl.h (struct device): Add lrecord_header.         * device-msw.c (allocate_devmode): Allocate as lrecord.         * device.c (nuke_all_device_slots): Use lrecord functions.         * device.c (allocate_device): Allocate as lrecord.         * dialog-msw.c (handle_question_dialog_box): Allocate as lrecord.         * elhash.c (struct Lisp_Hash_Table): Add lrecord_header.         * elhash.c (make_general_lisp_hash_table): Allocate as lrecord.         * elhash.c (Fcopy_hash_table): Allocate as lrecord.         * event-stream.c: Lcrecord lists Vcommand_builder_free_list and         Vtimeout_free_list are no longer needed. Remove.         * event-stream.c (allocate_command_builder): Allocate as lrecord.         * event-stream.c (free_command_builder): Use lrecord functions.         * event-stream.c (event_stream_generate_wakeup): Allocate as         lrecord.         * event-stream.c (event_stream_resignal_wakeup): Use lrecord         functions.         * event-stream.c (event_stream_disable_wakeup): Use lrecord         functions.         * event-stream.c (reinit_vars_of_event_stream): Lcrecord lists         remove.         * events.h (struct Lisp_Timeout): Add lrecord_header.         * events.h (struct command_builder): Add lrecord_header.         * extents-impl.h (struct extent_auxiliary): Add lrecord_header.         * extents-impl.h (struct extent_info): Add lrecord_header.         * extents.c (allocate_extent_auxiliary): Allocate as lrecord.         * extents.c (allocate_extent_info): Allocate as lrecord.         * extents.c (copy_extent): Allocate as lrecord.         * faces.c (allocate_face): Allocate as lrecord.         * faces.h (struct Lisp_Face): Add lrecord_header.         * file-coding.c (allocate_coding_system): Allocate as lrecord.         * file-coding.c (Fcopy_coding_system): Allocate as lrecord.         * file-coding.h (struct Lisp_Coding_System): Add lrecord_header.         * fns.c (Ffillarray): Allocate as lrecord.         * frame-impl.h (struct frame): Add lrecord_header.         * frame.c (nuke_all_frame_slots): Use lrecord functions.         * frame.c (allocate_frame_core): Allocate as lrecord.         * glyphs.c (allocate_image_instance): Allocate as lrecord.         * glyphs.c (Fcolorize_image_instance): Allocate as lrecord.         * glyphs.c (allocate_glyph): Allocate as lrecord.         * glyphs.h (struct Lisp_Image_Instance): Add lrecord_header.         * glyphs.h (struct Lisp_Glyph): Add lrecord_header.         * gui.c (allocate_gui_item): Allocate as lrecord.         * gui.h (struct Lisp_Gui_Item): Add lrecord_header.         * keymap.c (struct Lisp_Keymap): Add lrecord_header.         * keymap.c (make_keymap): Allocate as lrecord.         * lisp.h (struct Lisp_Vector): Add lrecord_header.         * lisp.h (struct Lisp_Bit_Vector): Add lrecord_header.         * lisp.h (struct weak_box): Add lrecord_header.         * lisp.h (struct ephemeron): Add lrecord_header.         * lisp.h (struct weak_list): Add lrecord_header.         * lrecord.h (struct lcrecord_header): Not used, remove.         * lrecord.h (struct free_lcrecord_header): Not used, remove.         * lrecord.h (struct lcrecord_list): Not needed anymore, remove.         * lrecord.h (lcrecord_list): Not needed anymore, remove.         * lrecord.h: (enum data_description_entry_flags): Remove         XD_FLAG_FREE_LISP_OBJECT.         * lstream.c: Lrecord list Vlstream_free_list remove.         * lstream.c (Lstream_new): Allocate as lrecord.         * lstream.c (Lstream_delete): Use lrecod functions.         * lstream.c (reinit_vars_of_lstream): Vlstream_free_list         initialization remove.           * lstream.h (struct lstream): Add lrecord_header.         * emacs.c (main_1): Remove lstream initialization.         * mule-charset.c (make_charset): Allocate as lrecord.         * objects-impl.h (struct Lisp_Color_Instance): Add         lrecord_header.         * objects-impl.h (struct Lisp_Font_Instance): Add lrecord_header.         * objects.c (Fmake_color_instance): Allocate as lrecord.         * objects.c (Fmake_font_instance): Allocate as lrecord.         * objects.c (reinit_vars_of_objects): Allocate as lrecord.         * opaque.c: Lcreord list Vopaque_ptr_list remove.         * opaque.c (make_opaque): Allocate as lrecord.         * opaque.c (make_opaque_ptr): Allocate as lrecord.         * opaque.c (free_opaque_ptr): Use lrecord functions.         * opaque.c (reinit_opaque_early):         * opaque.c (init_opaque_once_early): Vopaque_ptr_list         initialization remove.         * opaque.h (Lisp_Opaque): Add lrecord_header.         * opaque.h (Lisp_Opaque_Ptr): Add lrecord_header.         * emacs.c (main_1): Remove opaque variable initialization.         * print.c (default_object_printer): Use new lrecord_header.         * print.c (print_internal): Use new lrecord_header.         * print.c (debug_p4): Use new lrecord_header.         * process.c (make_process_internal): Allocate as lrecord.         * procimpl.h (struct Lisp_Process): Add lrecord_header.         * rangetab.c (Fmake_range_table): Allocate as lrecord.         * rangetab.c (Fcopy_range_table): Allocate as lrecord.         * rangetab.h (struct Lisp_Range_Table): Add lrecord_header.         * scrollbar.c (create_scrollbar_instance): Allocate as lrecord.         * scrollbar.h (struct scrollbar_instance): Add lrecord_header.         * specifier.c (make_specifier_internal): Allocate as lrecord.         * specifier.h (struct Lisp_Specifier): Add lrecord_header.         * symbols.c:         * symbols.c (Fmake_variable_buffer_local): Allocate as lrecord.         * symbols.c (Fdontusethis_set_symbol_value_handler): Allocate         as lrecord.         * symbols.c (Fdefvaralias): Allocate as lrecord.         * symeval.h (struct symbol_value_magic): Add lrecord_header.         * toolbar.c (update_toolbar_button): Allocate as lrecord.         * toolbar.h (struct toolbar_button): Add lrecord_header.         * tooltalk.c (struct Lisp_Tooltalk_Message): Add lrecord_header.         * tooltalk.c (make_tooltalk_message): Allocate as lrecord.         * tooltalk.c (struct Lisp_Tooltalk_Pattern): Add lrecord_header.         * tooltalk.c (make_tooltalk_pattern): Allocate as lrecord.         * ui-gtk.c (allocate_ffi_data): Allocate as lrecord.         * ui-gtk.c (allocate_emacs_gtk_object_data): Allocate as lrecord.         * ui-gtk.c (allocate_emacs_gtk_boxed_data): Allocate as lrecord.         * ui-gtk.h (structs): Add lrecord_header.         * window-impl.h (struct window): Add lrecord_header.         * window-impl.h (struct window_mirror): Add lrecord_header.         * window.c (allocate_window): Allocate as lrecord.         * window.c (new_window_mirror): Allocate as lrecord.         * window.c (make_dummy_parent): Allocate as lrecord.         MEMORY_USAGE_STATS         * alloc.c (fixed_type_block_overhead): Not used anymore, remove.         * buffer.c (compute_buffer_usage): Get storage size from new         allocator.         * marker.c (compute_buffer_marker_usage): Get storage size from         new allocator.         * mule-charset.c (compute_charset_usage): Get storage size from         new allocator.         * scrollbar-gtk.c (gtk_compute_scrollbar_instance_usage): Get         storage size from new allocator.         * scrollbar-msw.c (mswindows_compute_scrollbar_instance_usage):         Get storage size from new allocator.         * scrollbar-x.c (x_compute_scrollbar_instance_usage): Get         storage size from new allocator.         * scrollbar.c (compute_scrollbar_instance_usage): Get storage         size from new allocator.         * unicode.c (compute_from_unicode_table_size_1): Get storage         size from new allocator.         * unicode.c (compute_to_unicode_table_size_1): Get storage size         from new allocator.         * window.c (compute_window_mirror_usage): Get storage size from         new allocator.         * window.c (compute_window_usage): Get storage size from new         allocator.         MC_ALLOC_TYPE_STATS:         * alloc.c (alloc_lrecord): Bump lrecord count.         * alloc.c (noseeum_alloc_lrecord): Bump lrecord count.         * alloc.c (struct lrecord_stats): Storage for counts.         * alloc.c (init_lrecord_stats): Zero statistics.         * alloc.c (inc_lrecord_stats): Increase the statistic.         * alloc.c (dec_lrecord_stats): Decrease the statistic.         * alloc.c (gc_plist_hack): Used to print the information.         * alloc.c (Fgarbage_collect): Return the collected information.         * mc-alloc.c (remove_cell): Decrease lrecord count.         * mc-alloc.h: Set flag MC_ALLOC_TYPE_STATS.         * emacs.c (main_1): Init lrecord statistics.         * lrecord.h: Add prototypes for *_lrecord_stats.         Strings:         * alloc.c (Fmake_string): Initialize ascii_begin to zero.         * alloc.c (gc_count_num_short_string_in_use): Remove.         * alloc.c (gc_count_string_total_size): Remove.         * alloc.c (gc_count_short_string_total_size): Remove.         * alloc.c (debug_string_purity): Remove.         * alloc.c (debug_string_purity_print): Remove.         * alloc.c (sweep_strings): Remove.                  Remove static C-readonly Lisp objects:         * alloc.c (c_readonly): Not needed anymore, remove.         * alloc.c (GC_CHECK_LHEADER_INVARIANTS): Remove some obsolete         lheader invariants assertions.         * buffer.c (DEFVAR_BUFFER_LOCAL_1): Allocate dynamically.         * console.c (DEFVAR_CONSOLE_LOCAL_1): Allocate dynamically.         * gpmevent.c: Indirection via MC_ALLOC_Freceive_gpm_event.         * gpmevent.c (Fgpm_enable): Allocate dynamically.         * gpmevent.c (syms_of_gpmevent): Allocate dynamically.         * lisp.h (C_READONLY): Not needed anymore, remove.         * lisp.h (DEFUN): Allocate dynamically.         * lrecord.h (C_READONLY_RECORD_HEADER_P): Not needed anymore,         remove.         * lrecord.h (SET_C_READONLY_RECORD_HEADER): Not needed anymore,         remove.         * symbols.c (guts_of_unbound_marker):         * symeval.h (defsubr): Allocate dynamically.         * symeval.h (DEFSUBR_MACRO): Allocate dynamically.         * symeval.h (DEFVAR_ SYMVAL_FWD): Allocate dynamically.         * tests.c (TESTS_DEFSUBR): Allocate dynamically.         Definition of mcpro:         * lisp.h: Add mcpro prototypes.         * alloc.c (common_init_alloc_early): Add initialization for         mcpros.         * alloc.c (mcpro_description_1): New.         * alloc.c (mcpro_description): New.         * alloc.c (mcpros_description_1): New.         * alloc.c (mcpros_description): New.         * alloc.c (mcpro_one_name_description_1): New.         * alloc.c (mcpro_one_name_description): New.         * alloc.c (mcpro_names_description_1): New.         * alloc.c (mcpro_names_description): New.         * alloc.c (mcpros): New.         * alloc.c (mcpro_names): New.         * alloc.c (mcpro_1): New.         * alloc.c (mc_pro): New.         * alloc.c (garbage_collect_1): Add mcpros to root set.         Usage of mcpro:         * alloc.c (make_string_nocopy): Add string to root set.         * symbols.c (init_symbols_once_early): Add Qunbound to root set.         Changes to the Portable Dumper:                  * alloc.c (FREE_OR_REALLOC_BEGIN): Since dumped objects can be         freed with the new allocator, remove assertion for !DUMPEDP.         * dumper.c: Adjust comments, increase PDUMP_HASHSIZE.         * dumper.c (pdump_make_hash): Shift address only 2 bytes, to         avoid collisions.         * dumper.c (pdump_objects_unmark): No more mark bits within         the object, remove.         * dumper.c (mc_addr_elt): New. Element data structure for mc         hash table.         * dumper.c (pdump_mc_hash): New hash table: `lookup table'.         * dumper.c (pdump_get_mc_addr): New. Lookup for hash table.         * dumper.c (pdump_get_indirect_mc_addr): New. Lookup for         convertibles.         * dumper.c (pdump_put_mc_addr): New. Putter for hash table.         * dumper.c (pdump_dump_mc_data): New. Writes the table for         relocation at load time to the dump file.         * dumper.c (pdump_scan_lisp_objects_by_alignment): New.         Visits all dumped Lisp objects.         * dumper.c (pdump_scan_non_lisp_objects_by_alignment): New.         Visits all other dumped objects.         * dumper.c (pdump_reloc_one_mc): New. Updates all pointers         of an object by using the hash table pdump_mc_hash.         * dumper.c (pdump_reloc_one): Replaced by pdump_reloc_one_mc.         * dumper.c (pdump): Change the structure of the dump file, add         the mc post dump relocation table to dump file.         * dumper.c (pdump_load_finish): Hand all dumped objects to the         new allocator and use the mc post dump relocation table for         relocating the dumped objects at dump file load time, free not         longer used data structures.         * dumper.c (pdump_load): Free the dump file.         * dumper.h: Remove pdump_objects_unmark.         * lrecord.h (DUMPEDP): Dumped objects can be freed, remove.              DUMP_IN_EXEC:         * Makefile.in.in: Linking for and with dump in executable only if         DUMP_IN_EXEC is defined.         * config.h.in: Add new flag `DUMP_IN_EXEC'         * emacs.c: Condition dump-data.h on DUMP_IN_EXEC.         * emacs.c (main_1): Flag `-si' only works if dump image is         written into executable.         Miscellanious         * lrecord.h (enum lrecord_type): Added numbers to all types,         very handy for debugging.         * xemacs.def.in.in: Add mc-alloc functions to make them visible         to the modules.
author crestani
date Fri, 08 Apr 2005 23:11:35 +0000
parents 3d8143fc88e1
children 1e7cc382eb16
line wrap: on
line source

/* scrollbar implementation -- X interface.
   Copyright (C) 1994, 1995 Board of Trustees, University of Illinois.
   Copyright (C) 1994 Amdahl Corporation.
   Copyright (C) 1995 Sun Microsystems, Inc.
   Copyright (C) 1995 Darrell Kindred <dkindred+@cmu.edu>.

This file is part of XEmacs.

XEmacs 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 2, or (at your option) any
later version.

XEmacs 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 XEmacs; see the file COPYING.  If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

/* Synched up with: Not in FSF. */

/* This file Mule-ized (more like Mule-verified) by Ben Wing, 7-8-00. */

#include <config.h>
#include "lisp.h"

#include "device-impl.h"
#include "frame-impl.h"
#include "window.h"

#include "console-x-impl.h"
#include "glyphs-x.h"
#include "scrollbar-x.h"

#include "EmacsFrame.h"

static void x_update_vertical_scrollbar_callback (Widget widget, LWLIB_ID id,
						  XtPointer client_data);
static void x_update_horizontal_scrollbar_callback (Widget widget, LWLIB_ID id,
						    XtPointer client_data);

/* Used to prevent changing the size of the slider while drag
   scrolling, under Motif.  This is necessary because the Motif
   scrollbar is incredibly stupid about updating the slider and causes
   lots of flicker if it is done too often.  */
static int inhibit_slider_size_change;
int stupid_vertical_scrollbar_drag_hack;

/* Doesn't work with athena */
#if defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_LUCID)
static int vertical_drag_in_progress;
#endif


/* A device method. */
static int
x_inhibit_scrollbar_slider_size_change (void)
{
  /* Doesn't work with Athena */
#if defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_LUCID)
  return inhibit_slider_size_change;
#else
  return 0;
#endif
}

/* A device method. */
static void
x_free_scrollbar_instance (struct scrollbar_instance *instance)
{
  if (SCROLLBAR_X_NAME (instance))
    xfree (SCROLLBAR_X_NAME (instance), char *);

  if (SCROLLBAR_X_WIDGET (instance))
    {
      if (XtIsManaged (SCROLLBAR_X_WIDGET (instance)))
	XtUnmanageChild (SCROLLBAR_X_WIDGET (instance));

      lw_destroy_all_widgets (SCROLLBAR_X_ID (instance));
    }

  if (instance->scrollbar_data)
    xfree (instance->scrollbar_data, void *);
}

/* A device method. */
static void
x_release_scrollbar_instance (struct scrollbar_instance *instance)
{
  if (XtIsManaged (SCROLLBAR_X_WIDGET (instance)))
    XtUnmanageChild (SCROLLBAR_X_WIDGET (instance));
}

/* A device method. */
static void
x_create_scrollbar_instance (struct frame *f, int vertical,
			     struct scrollbar_instance *instance)
{
  char buffer[32];

  /* initialize the X specific data section. */
  instance->scrollbar_data = xnew_and_zero (struct x_scrollbar_data);

  SCROLLBAR_X_ID (instance) = new_lwlib_id ();
  sprintf (buffer, "scrollbar_%d", SCROLLBAR_X_ID (instance));
  SCROLLBAR_X_NAME (instance) = xstrdup (buffer);
#if defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_LUCID) || \
    defined (LWLIB_SCROLLBARS_ATHENA3D)
  SCROLLBAR_X_VDRAG_ORIG_VALUE (instance) = -1;
#endif

  if (vertical)
    {
      SCROLLBAR_X_WIDGET (instance) =
	lw_create_widget ("vertical-scrollbar", SCROLLBAR_X_NAME (instance),
			  SCROLLBAR_X_ID (instance),
			  NULL, FRAME_X_CONTAINER_WIDGET (f), 0,
			  x_update_vertical_scrollbar_callback, NULL, NULL);
    }
  else
    {
      SCROLLBAR_X_WIDGET (instance) =
	lw_create_widget ("horizontal-scrollbar", SCROLLBAR_X_NAME (instance),
			  SCROLLBAR_X_ID (instance),
			  NULL, FRAME_X_CONTAINER_WIDGET (f), 0,
			  x_update_horizontal_scrollbar_callback, NULL, NULL);
    }
}

#define UPDATE_DATA_FIELD(field)				\
  if (new_##field >= 0 &&					\
      SCROLLBAR_X_POS_DATA (inst).field != new_##field) {	\
    SCROLLBAR_X_POS_DATA (inst).field = new_##field;		\
    inst->scrollbar_instance_changed = 1;			\
  }

/* A device method. */
/* #### The -1 check is such a hack. */
static void
x_update_scrollbar_instance_values (struct window *w,
				    struct scrollbar_instance *inst,
				    int new_line_increment,
				    int new_page_increment,
				    int new_minimum, int new_maximum,
				    int new_slider_size,
				    int new_slider_position,
				    int new_scrollbar_width,
				    int new_scrollbar_height,
				    int new_scrollbar_x, int new_scrollbar_y)
{
  UPDATE_DATA_FIELD (line_increment);
  UPDATE_DATA_FIELD (page_increment);
  UPDATE_DATA_FIELD (minimum);
  UPDATE_DATA_FIELD (maximum);
  UPDATE_DATA_FIELD (slider_size);
  UPDATE_DATA_FIELD (slider_position);
  UPDATE_DATA_FIELD (scrollbar_width);
  UPDATE_DATA_FIELD (scrollbar_height);
  UPDATE_DATA_FIELD (scrollbar_x);
  UPDATE_DATA_FIELD (scrollbar_y);

  /* This doesn't work with Athena, why? */
#if defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_LUCID)
  if (w && !vertical_drag_in_progress)
    {
      int new_vov = SCROLLBAR_X_POS_DATA (inst).slider_position;
      int new_vows = marker_position (w->start[CURRENT_DISP]);

      if (SCROLLBAR_X_VDRAG_ORIG_VALUE (inst) != new_vov)
	{
	  SCROLLBAR_X_VDRAG_ORIG_VALUE (inst) = new_vov;
	  inst->scrollbar_instance_changed = 1;
	}
      if (SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (inst) != new_vows)
	{
	  SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (inst) = new_vows;
	  inst->scrollbar_instance_changed = 1;
	}
    }
#endif
}

/* Used by x_update_scrollbar_instance_status. */
static void
update_one_scrollbar_bs (struct frame *f, Widget sb_widget)
{
  Boolean use_backing_store;

  Xt_GET_VALUE (FRAME_X_TEXT_WIDGET (f), XtNuseBackingStore, &use_backing_store);

  if (use_backing_store && sb_widget)
    {
      unsigned long mask = CWBackingStore;
      XSetWindowAttributes attrs;

      attrs.backing_store = Always;
      XChangeWindowAttributes (XtDisplay (sb_widget),
			       XtWindow (sb_widget),
			       mask,
			       &attrs);
    }
}

/* Create a widget value structure for passing down to lwlib so that
   it can update the scrollbar widgets.  Used by
   x_update_scrollbar_instance_status. */
static widget_value *
scrollbar_instance_to_widget_value (struct scrollbar_instance *instance)
{
  widget_value *wv;

  wv = xmalloc_widget_value ();
  /* #### maybe should add malloc_scrollbar_values to resource these? */
  wv->scrollbar_data = xnew (scrollbar_values);

  wv->name = SCROLLBAR_X_NAME (instance);
  wv->name = xstrdup (wv->name);
  wv->value = 0;
  wv->key = 0;
  wv->enabled = instance->scrollbar_is_active;
  wv->selected = 0;
  wv->call_data = NULL;

  *wv->scrollbar_data = SCROLLBAR_X_POS_DATA (instance);

  wv->next = NULL;

  return wv;
}

/* Used by x_update_scrollbar_instance_status. */
static void
update_one_widget_scrollbar_pointer (struct window *w, Widget wid)
{
  if (POINTER_IMAGE_INSTANCEP (w->scrollbar_pointer))
    {
      XDefineCursor (XtDisplay (wid), XtWindow (wid),
		     XIMAGE_INSTANCE_X_CURSOR (w->scrollbar_pointer));
      XSync (XtDisplay (wid), False);
    }
}

/* A device method. */
static void
x_update_scrollbar_instance_status (struct window *w, int active, int size,
				    struct scrollbar_instance *instance)
{
  struct frame *f = XFRAME (w->frame);
  Boolean managed = XtIsManaged (SCROLLBAR_X_WIDGET (instance));

  if (active && size)
    {
      widget_value *wv = scrollbar_instance_to_widget_value (instance);

      if (instance->scrollbar_instance_changed)
	{
	  lw_modify_all_widgets (SCROLLBAR_X_ID (instance), wv, 0);
	  instance->scrollbar_instance_changed = 0;
	}

      if (!managed)
	{
	  XtManageChild (SCROLLBAR_X_WIDGET (instance));
	  if (XtWindow (SCROLLBAR_X_WIDGET (instance)))
	    {
	      /* Raise this window so that it's visible on top of the
                 text window below it. */
	      XRaiseWindow (XtDisplay (SCROLLBAR_X_WIDGET (instance)),
			    XtWindow (SCROLLBAR_X_WIDGET (instance)));
	      update_one_widget_scrollbar_pointer
		(w, SCROLLBAR_X_WIDGET (instance));
	      if (!SCROLLBAR_X_BACKING_STORE_INITIALIZED (instance))
		{
		  update_one_scrollbar_bs (f, SCROLLBAR_X_WIDGET (instance));
		  SCROLLBAR_X_BACKING_STORE_INITIALIZED (instance) = 1;
		}
	    }
	}

      if (!wv->scrollbar_data) ABORT ();
      free_widget_value_tree (wv);
    }
  else if (managed)
    {
#if defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_LUCID)
      /* This isn't needed with Athena Scrollbars.  It might not be needed */
      /* with Motif scrollbars (it is apparently needed with Lesstif). */
      XtUngrabKeyboard (SCROLLBAR_X_WIDGET (instance), CurrentTime);
#endif
      XtUnmanageChild (SCROLLBAR_X_WIDGET (instance));
    }
}

enum x_scrollbar_loop
{
  X_FIND_SCROLLBAR_WINDOW_MIRROR,
  X_SET_SCROLLBAR_POINTER,
  X_WINDOW_IS_SCROLLBAR,
  X_UPDATE_FRAME_SCROLLBARS
};

static struct window_mirror *
x_scrollbar_loop (enum x_scrollbar_loop type, Lisp_Object window,
		  struct window_mirror *mir,
		  LWLIB_ID id, Window x_win)
{
  struct window_mirror *retval = NULL;

  while (mir)
    {
      struct scrollbar_instance *vinstance = mir->scrollbar_vertical_instance;
      struct scrollbar_instance *hinstance = mir->scrollbar_horizontal_instance;
      struct window *w = XWINDOW (window);

      if (mir->vchild)
	retval = x_scrollbar_loop (type, w->vchild, mir->vchild, id, x_win);
      else if (mir->hchild)
	retval = x_scrollbar_loop (type, w->hchild, mir->hchild, id, x_win);
      if (retval)
	return retval;

      if (hinstance || vinstance)
	{
	  switch (type)
	    {
	    case X_FIND_SCROLLBAR_WINDOW_MIRROR:
	      if ((vinstance && SCROLLBAR_X_ID (vinstance) == id) ||
		  (hinstance && SCROLLBAR_X_ID (hinstance) == id))
		return mir;
	      break;
	    case X_UPDATE_FRAME_SCROLLBARS:
	      if (!mir->vchild && !mir->hchild)
		update_window_scrollbars (w, mir, 1, 0);
	      break;
	    case X_SET_SCROLLBAR_POINTER:
	      if (!mir->vchild && !mir->hchild)
		{
                  Widget widget;

		  widget = SCROLLBAR_X_WIDGET (hinstance);
		  if (widget && XtIsManaged (widget))
		    update_one_widget_scrollbar_pointer (w, widget);

		  widget = SCROLLBAR_X_WIDGET (vinstance);
		  if (widget && XtIsManaged (widget))
		    update_one_widget_scrollbar_pointer (w, widget);
		}
	      break;
	    case X_WINDOW_IS_SCROLLBAR:
	      if (!mir->vchild && !mir->hchild)
		{
		  Widget widget;

		  widget = SCROLLBAR_X_WIDGET (hinstance);
		  if (widget && XtIsManaged (widget) &&
		      XtWindow (widget) == x_win)
		    return (struct window_mirror *) 1;

		  widget = SCROLLBAR_X_WIDGET (vinstance);
		  if (widget && XtIsManaged (widget) &&
		      XtWindow (widget) == x_win)
		    return (struct window_mirror *) 1;
		}
	      break;
	    default:
	      ABORT ();
	    }
	}

      mir = mir->next;
      window = w->next;
    }

  return NULL;
}

/* Used by callbacks. */
static struct window_mirror *
find_scrollbar_window_mirror (struct frame *f, LWLIB_ID id)
{
  if (f->mirror_dirty)
    update_frame_window_mirror (f);
  return x_scrollbar_loop (X_FIND_SCROLLBAR_WINDOW_MIRROR, f->root_window,
			   XWINDOW_MIRROR (f->root_mirror), id, (Window) NULL);
}

/*
 * This is the only callback provided for vertical scrollbars.  It
 * should be able to handle all of the scrollbar events in
 * scroll_action (see lwlib.h).  The client data will be of type
 * scroll_event (see lwlib.h). */
static void
x_update_vertical_scrollbar_callback (Widget widget, LWLIB_ID id,
				      XtPointer client_data)
{
  /* This function can GC */
  scroll_event *data = (scroll_event *) client_data;
  struct device *d = get_device_from_display (XtDisplay (widget));
  struct frame *f = x_any_window_to_frame (d, XtWindow (widget));
  Lisp_Object win, frame;
  struct scrollbar_instance *instance;
  struct window_mirror *mirror;

  if (!f)
    return;

  mirror = find_scrollbar_window_mirror (f, id);
  if (!mirror)
    return;

  win = real_window (mirror, 1);

  if (NILP (win))
    return;
  instance = mirror->scrollbar_vertical_instance;
  frame = WINDOW_FRAME (XWINDOW (win));

  /* It seems that this is necessary whenever signal_special_Xt_user_event()
     is called.  #### Why??? */
  DEVICE_X_MOUSE_TIMESTAMP (d) = DEVICE_X_GLOBAL_MOUSE_TIMESTAMP (d);

  switch (data->action)
    {
    case SCROLLBAR_LINE_UP:
      signal_special_Xt_user_event (frame, Qscrollbar_line_up, win);
      break;

    case SCROLLBAR_LINE_DOWN:
      signal_special_Xt_user_event (frame, Qscrollbar_line_down, win);
      break;

      /* The Athena scrollbar paging behavior is that of xterms.
         Depending on where you click the size of the page varies.
         Motif always does a standard Emacs page. */
    case SCROLLBAR_PAGE_UP:
#if !defined (LWLIB_SCROLLBARS_MOTIF) && !defined (LWLIB_SCROLLBARS_LUCID) && \
    !defined (LWLIB_SCROLLBARS_ATHENA3D)
      {
	double tmp = ((double) data->slider_value /
		      (double) SCROLLBAR_X_POS_DATA(instance).scrollbar_height);
	double line = tmp *
	  (double) window_displayed_height (XWINDOW (win));

	if (line > -1.0)
	  line = -1.0;
	signal_special_Xt_user_event (frame, Qscrollbar_page_up,
				      Fcons (win, make_int ((int) line)));
      }
#else
      signal_special_Xt_user_event (frame, Qscrollbar_page_up,
				    Fcons (win, Qnil));
#endif
      break;

    case SCROLLBAR_PAGE_DOWN:
#if !defined (LWLIB_SCROLLBARS_MOTIF) && !defined (LWLIB_SCROLLBARS_LUCID) && \
    !defined (LWLIB_SCROLLBARS_ATHENA3D)
      {
	double tmp = ((double) data->slider_value /
		      (double) SCROLLBAR_X_POS_DATA(instance).scrollbar_height);
	double line = tmp *
	  (double) window_displayed_height (XWINDOW (win));

	if (SCROLLBAR_X_POS_DATA(instance).maximum >
	    (SCROLLBAR_X_POS_DATA(instance).slider_size + SCROLLBAR_X_POS_DATA(instance).slider_position))
	  {
	    if (line < 1.0)
	      line = 1.0;
	    signal_special_Xt_user_event (frame, Qscrollbar_page_down,
					  Fcons (win,
						 make_int ((int) line)));
	  }
      }
#else
      signal_special_Xt_user_event (frame, Qscrollbar_page_down,
				    Fcons (win, Qnil));
#endif
      break;

    case SCROLLBAR_TOP:
      signal_special_Xt_user_event (frame, Qscrollbar_to_top, win);
      break;

    case SCROLLBAR_BOTTOM:
      signal_special_Xt_user_event (frame, Qscrollbar_to_bottom, win);
      break;


    case SCROLLBAR_CHANGE:
      inhibit_slider_size_change = 0;
#if defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_LUCID)
      vertical_drag_in_progress = 0;
      SCROLLBAR_X_VDRAG_ORIG_VALUE (instance) = data->slider_value;
      SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (instance) =
	XINT (Fwindow_start (win));
#else
      stupid_vertical_scrollbar_drag_hack = 0;
#endif
      break;

    case SCROLLBAR_DRAG:
      {
	int value;

	inhibit_slider_size_change = 1;

#if defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_LUCID)
	/* Doing drags with Motif-like scrollbars is a mess, since we
	   want to avoid having the window position jump when you
	   first grab the scrollbar, but we also want to ensure that
	   you can scroll all the way to the top or bottom of the
	   buffer.  This can all be replaced with something sane when
	   we get line-based scrolling. */

	vertical_drag_in_progress = 1;

	if (SCROLLBAR_X_VDRAG_ORIG_VALUE (instance) < 0)
	  {
	    SCROLLBAR_X_VDRAG_ORIG_VALUE (instance) = data->slider_value;
	    SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (instance) =
	      XINT (Fwindow_start (win));
	  }

	/* Could replace this piecewise linear scrolling with a
	   quadratic through the three points, but I'm not sure that
	   would feel any nicer in practice. */
	if (data->slider_value < SCROLLBAR_X_VDRAG_ORIG_VALUE (instance))
	  {
	    /* We've dragged up; slide linearly from original position to
	       window-start=data.minimum, slider-value=data.minimum. */

	    if (SCROLLBAR_X_VDRAG_ORIG_VALUE (instance)
		<= SCROLLBAR_X_POS_DATA (instance).minimum)
	      {
		/* shouldn't get here, but just in case */
		value = SCROLLBAR_X_POS_DATA (instance).minimum;
	      }
	    else
	      {
		value = (int)
		  (SCROLLBAR_X_POS_DATA (instance).minimum
		   + (((double)
		       (SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (instance)
			- SCROLLBAR_X_POS_DATA (instance).minimum)
		       * (data->slider_value -
			  SCROLLBAR_X_POS_DATA (instance).minimum))
		      / (SCROLLBAR_X_VDRAG_ORIG_VALUE (instance)
			 - SCROLLBAR_X_POS_DATA (instance).minimum)));
	      }
	  }
	else
	  {
	    /* We've dragged down; slide linearly from original position to
	       window-start=data.maximum, slider-value=data.maximum. */

	    if (SCROLLBAR_X_VDRAG_ORIG_VALUE (instance)
		>= (SCROLLBAR_X_POS_DATA (instance).maximum -
		    SCROLLBAR_X_POS_DATA (instance).slider_size))
	      {
		/* avoid divide by zero */
		value = SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (instance);
	      }
	    else
	      {
		value = (int)
		  (SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (instance)
		   + (((double)
		       (SCROLLBAR_X_POS_DATA (instance).maximum
			- SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (instance))
		       * (data->slider_value
			  - SCROLLBAR_X_VDRAG_ORIG_VALUE (instance)))
		      / (SCROLLBAR_X_POS_DATA (instance).maximum
			 - SCROLLBAR_X_POS_DATA (instance).slider_size
			 - SCROLLBAR_X_VDRAG_ORIG_VALUE (instance))));
	      }
	  }
#else
	stupid_vertical_scrollbar_drag_hack = 0;
	value = data->slider_value;
#endif

	if (value >= SCROLLBAR_X_POS_DATA (instance).maximum)
	  value = SCROLLBAR_X_POS_DATA (instance).maximum - 1;
	if (value < SCROLLBAR_X_POS_DATA (instance).minimum)
	  value = SCROLLBAR_X_POS_DATA (instance).minimum;

	signal_special_Xt_user_event (frame, Qscrollbar_vertical_drag,
				      Fcons (win, make_int (value)));
      }
      break;

    }
}

/*
 * This is the only callback provided for horizontal scrollbars.  It
 * should be able to handle all of the scrollbar events in
 * scroll_action (see lwlib.h).  The client data will be of type
 * scroll_event (see lwlib.h). */
static void
x_update_horizontal_scrollbar_callback (Widget widget, LWLIB_ID id,
					XtPointer client_data)
{
  scroll_event *data = (scroll_event *) client_data;
  struct device *d = get_device_from_display (XtDisplay (widget));
  struct frame *f = x_any_window_to_frame (d, XtWindow (widget));
  Lisp_Object win, frame;
  struct window_mirror *mirror;

  if (!f)
    return;

  mirror = find_scrollbar_window_mirror (f, id);
  if (!mirror)
    return;

  win = real_window (mirror, 1);

  if (NILP (win))
    return;
  frame = WINDOW_FRAME (XWINDOW (win));

  /* It seems that this is necessary whenever signal_special_Xt_user_event()
     is called.  #### Why??? */
  DEVICE_X_MOUSE_TIMESTAMP (d) = DEVICE_X_GLOBAL_MOUSE_TIMESTAMP (d);

  switch (data->action)
    {
    case SCROLLBAR_LINE_UP:
      signal_special_Xt_user_event (frame, Qscrollbar_char_left, win);
      break;
    case SCROLLBAR_LINE_DOWN:
      signal_special_Xt_user_event (frame, Qscrollbar_char_right, win);
      break;
    case SCROLLBAR_PAGE_UP:
      signal_special_Xt_user_event (frame, Qscrollbar_page_left, win);
      break;
    case SCROLLBAR_PAGE_DOWN:
      signal_special_Xt_user_event (frame, Qscrollbar_page_right, win);
      break;
    case SCROLLBAR_TOP:
      signal_special_Xt_user_event (frame, Qscrollbar_to_left, win);
      break;
    case SCROLLBAR_BOTTOM:
      signal_special_Xt_user_event (frame, Qscrollbar_to_right, win);
      break;
    case SCROLLBAR_CHANGE:
      inhibit_slider_size_change = 0;
      break;
    case SCROLLBAR_DRAG:
      inhibit_slider_size_change = 1;
      /* #### Fix the damn toolkit code so they all work the same way.
         Lucid is the one mostly wrong.*/
#if defined (LWLIB_SCROLLBARS_LUCID) || defined (LWLIB_SCROLLBARS_ATHENA3D)
      signal_special_Xt_user_event (frame, Qscrollbar_horizontal_drag,
				    (Fcons
				     (win, make_int (data->slider_value))));
#else
      signal_special_Xt_user_event (frame, Qscrollbar_horizontal_drag,
				    (Fcons
				     (win,
				      make_int (data->slider_value - 1))));
#endif
      break;
    default:
      break;
    }
}

static void
x_scrollbar_pointer_changed_in_window (struct window *w)
{
  Lisp_Object window = wrap_window (w);

  x_scrollbar_loop (X_SET_SCROLLBAR_POINTER, window, find_window_mirror (w),
		    0, (Window) NULL);
}

/* Make sure that all scrollbars on frame are up-to-date.  Called
   directly from x_set_frame_properties in frame-x.c*/
void
x_update_frame_scrollbars (struct frame *f)
{
  x_scrollbar_loop (X_UPDATE_FRAME_SCROLLBARS, f->root_window,
		    XWINDOW_MIRROR (f->root_mirror), 0, (Window) NULL);
}

#ifdef MEMORY_USAGE_STATS

static int
x_compute_scrollbar_instance_usage (struct device *UNUSED (d),
				    struct scrollbar_instance *inst,
				    struct overhead_stats *ovstats)
{
  int total = 0;

  while (inst)
    {
      struct x_scrollbar_data *data =
	(struct x_scrollbar_data *) inst->scrollbar_data;

#ifdef MC_ALLOC
      total += mc_alloced_storage_size (sizeof (*data), ovstats);
      total += mc_alloced_storage_size (1 + strlen (data->name), ovstats);
#else /* not MC_ALLOC */
      total += malloced_storage_size (data, sizeof (*data), ovstats);
      total += malloced_storage_size (data->name, 1 + strlen (data->name),
				      ovstats);
#endif /* not MC_ALLOC */
      inst = inst->next;
    }

  return total;
}

#endif /* MEMORY_USAGE_STATS */


/************************************************************************/
/*                            initialization                            */
/************************************************************************/

void
console_type_create_scrollbar_x (void)
{
  CONSOLE_HAS_METHOD (x, inhibit_scrollbar_slider_size_change);
  CONSOLE_HAS_METHOD (x, free_scrollbar_instance);
  CONSOLE_HAS_METHOD (x, release_scrollbar_instance);
  CONSOLE_HAS_METHOD (x, create_scrollbar_instance);
  CONSOLE_HAS_METHOD (x, update_scrollbar_instance_values);
  CONSOLE_HAS_METHOD (x, update_scrollbar_instance_status);
  CONSOLE_HAS_METHOD (x, scrollbar_pointer_changed_in_window);
#ifdef MEMORY_USAGE_STATS
  CONSOLE_HAS_METHOD (x, compute_scrollbar_instance_usage);
#endif /* MEMORY_USAGE_STATS */
}

void
reinit_vars_of_scrollbar_x (void)
{
  stupid_vertical_scrollbar_drag_hack = 1;
}

void
vars_of_scrollbar_x (void)
{
#if defined (LWLIB_SCROLLBARS_LUCID)
  Fprovide (intern ("lucid-scrollbars"));
#elif defined (LWLIB_SCROLLBARS_MOTIF)
  Fprovide (intern ("motif-scrollbars"));
#elif defined (LWLIB_SCROLLBARS_ATHENA)
  Fprovide (intern ("athena-scrollbars"));
#endif
}