view lisp/auto-show.el @ 4952:19a72041c5ed

Mule-izing, various fixes related to char * arguments -------------------- ChangeLog entries follow: -------------------- modules/ChangeLog addition: 2010-01-26 Ben Wing <ben@xemacs.org> * postgresql/postgresql.c: * postgresql/postgresql.c (CHECK_LIVE_CONNECTION): * postgresql/postgresql.c (print_pgresult): * postgresql/postgresql.c (Fpq_conn_defaults): * postgresql/postgresql.c (Fpq_connectdb): * postgresql/postgresql.c (Fpq_connect_start): * postgresql/postgresql.c (Fpq_result_status): * postgresql/postgresql.c (Fpq_res_status): Mule-ize large parts of it. 2010-01-26 Ben Wing <ben@xemacs.org> * ldap/eldap.c (print_ldap): * ldap/eldap.c (allocate_ldap): Use write_ascstring(). src/ChangeLog addition: 2010-01-26 Ben Wing <ben@xemacs.org> * alloc.c: * alloc.c (build_ascstring): * alloc.c (build_msg_cistring): * alloc.c (staticpro_1): * alloc.c (staticpro_name): * alloc.c (staticpro_nodump_1): * alloc.c (staticpro_nodump_name): * alloc.c (unstaticpro_nodump_1): * alloc.c (mcpro_1): * alloc.c (mcpro_name): * alloc.c (object_memory_usage_stats): * alloc.c (common_init_alloc_early): * alloc.c (init_alloc_once_early): * buffer.c (print_buffer): * buffer.c (vars_of_buffer): * buffer.c (common_init_complex_vars_of_buffer): * buffer.c (init_initial_directory): * bytecode.c (invalid_byte_code): * bytecode.c (print_compiled_function): * bytecode.c (mark_compiled_function): * chartab.c (print_table_entry): * chartab.c (print_char_table): * config.h.in: * console-gtk.c: * console-gtk.c (gtk_device_to_console_connection): * console-gtk.c (gtk_semi_canonicalize_console_connection): * console-gtk.c (gtk_canonicalize_console_connection): * console-gtk.c (gtk_semi_canonicalize_device_connection): * console-gtk.c (gtk_canonicalize_device_connection): * console-stream.c (stream_init_frame_1): * console-stream.c (vars_of_console_stream): * console-stream.c (init_console_stream): * console-x.c (x_semi_canonicalize_console_connection): * console-x.c (x_semi_canonicalize_device_connection): * console-x.c (x_canonicalize_device_connection): * console-x.h: * data.c (eq_with_ebola_notice): * data.c (Fsubr_interactive): * data.c (Fnumber_to_string): * data.c (digit_to_number): * device-gtk.c (gtk_init_device): * device-msw.c (print_devmode): * device-x.c (x_event_name): * dialog-msw.c (handle_directory_dialog_box): * dialog-msw.c (handle_file_dialog_box): * dialog-msw.c (vars_of_dialog_mswindows): * doc.c (weird_doc): * doc.c (Fsnarf_documentation): * doc.c (vars_of_doc): * dumper.c (pdump): * dynarr.c: * dynarr.c (Dynarr_realloc): * editfns.c (Fuser_real_login_name): * editfns.c (get_home_directory): * elhash.c (print_hash_table_data): * elhash.c (print_hash_table): * emacs.c (main_1): * emacs.c (vars_of_emacs): * emodules.c: * emodules.c (_emodules_list): * emodules.c (Fload_module): * emodules.c (Funload_module): * emodules.c (Flist_modules): * emodules.c (find_make_module): * emodules.c (attempt_module_delete): * emodules.c (emodules_load): * emodules.c (emodules_doc_subr): * emodules.c (emodules_doc_sym): * emodules.c (syms_of_module): * emodules.c (vars_of_module): * emodules.h: * eval.c (print_subr): * eval.c (signal_call_debugger): * eval.c (build_error_data): * eval.c (signal_error): * eval.c (maybe_signal_error): * eval.c (signal_continuable_error): * eval.c (maybe_signal_continuable_error): * eval.c (signal_error_2): * eval.c (maybe_signal_error_2): * eval.c (signal_continuable_error_2): * eval.c (maybe_signal_continuable_error_2): * eval.c (signal_ferror): * eval.c (maybe_signal_ferror): * eval.c (signal_continuable_ferror): * eval.c (maybe_signal_continuable_ferror): * eval.c (signal_ferror_with_frob): * eval.c (maybe_signal_ferror_with_frob): * eval.c (signal_continuable_ferror_with_frob): * eval.c (maybe_signal_continuable_ferror_with_frob): * eval.c (syntax_error): * eval.c (syntax_error_2): * eval.c (maybe_syntax_error): * eval.c (sferror): * eval.c (sferror_2): * eval.c (maybe_sferror): * eval.c (invalid_argument): * eval.c (invalid_argument_2): * eval.c (maybe_invalid_argument): * eval.c (invalid_constant): * eval.c (invalid_constant_2): * eval.c (maybe_invalid_constant): * eval.c (invalid_operation): * eval.c (invalid_operation_2): * eval.c (maybe_invalid_operation): * eval.c (invalid_change): * eval.c (invalid_change_2): * eval.c (maybe_invalid_change): * eval.c (invalid_state): * eval.c (invalid_state_2): * eval.c (maybe_invalid_state): * eval.c (wtaerror): * eval.c (stack_overflow): * eval.c (out_of_memory): * eval.c (print_multiple_value): * eval.c (issue_call_trapping_problems_warning): * eval.c (backtrace_specials): * eval.c (backtrace_unevalled_args): * eval.c (Fbacktrace): * eval.c (warn_when_safe): * event-Xt.c (modwarn): * event-Xt.c (modbarf): * event-Xt.c (check_modifier): * event-Xt.c (store_modifier): * event-Xt.c (emacs_Xt_format_magic_event): * event-Xt.c (describe_event): * event-gtk.c (dragndrop_data_received): * event-gtk.c (store_modifier): * event-gtk.c (gtk_reset_modifier_mapping): * event-msw.c (dde_eval_string): * event-msw.c (Fdde_alloc_advise_item): * event-msw.c (mswindows_dde_callback): * event-msw.c (FROB): * event-msw.c (emacs_mswindows_format_magic_event): * event-stream.c (external_debugging_print_event): * event-stream.c (execute_help_form): * event-stream.c (vars_of_event_stream): * events.c (print_event_1): * events.c (print_event): * events.c (event_equal): * extents.c (print_extent_1): * extents.c (print_extent): * extents.c (vars_of_extents): * faces.c (print_face): * faces.c (complex_vars_of_faces): * file-coding.c: * file-coding.c (print_coding_system): * file-coding.c (print_coding_system_in_print_method): * file-coding.c (default_query_method): * file-coding.c (find_coding_system): * file-coding.c (make_coding_system_1): * file-coding.c (chain_print): * file-coding.c (undecided_print): * file-coding.c (gzip_print): * file-coding.c (vars_of_file_coding): * file-coding.c (complex_vars_of_file_coding): * fileio.c: * fileio.c (report_file_type_error): * fileio.c (report_error_with_errno): * fileio.c (report_file_error): * fileio.c (barf_or_query_if_file_exists): * fileio.c (vars_of_fileio): * floatfns.c (matherr): * fns.c (print_bit_vector): * fns.c (Fmapconcat): * fns.c (add_suffix_to_symbol): * fns.c (add_prefix_to_symbol): * frame-gtk.c: * frame-gtk.c (Fgtk_window_id): * frame-x.c (def): * frame-x.c (x_cde_transfer_callback): * frame.c: * frame.c (Fmake_frame): * gc.c (show_gc_cursor_and_message): * gc.c (vars_of_gc): * glyphs-eimage.c (png_instantiate): * glyphs-eimage.c (tiff_instantiate): * glyphs-gtk.c (gtk_print_image_instance): * glyphs-msw.c (mswindows_print_image_instance): * glyphs-x.c (x_print_image_instance): * glyphs-x.c (update_widget_face): * glyphs.c (make_string_from_file): * glyphs.c (print_image_instance): * glyphs.c (signal_image_error): * glyphs.c (signal_image_error_2): * glyphs.c (signal_double_image_error): * glyphs.c (signal_double_image_error_2): * glyphs.c (xbm_mask_file_munging): * glyphs.c (pixmap_to_lisp_data): * glyphs.h: * gui.c (gui_item_display_flush_left): * hpplay.c (player_error_internal): * hpplay.c (myHandler): * intl-win32.c: * intl-win32.c (langcode_to_lang): * intl-win32.c (sublangcode_to_lang): * intl-win32.c (Fmswindows_get_locale_info): * intl-win32.c (lcid_to_locale_mule_or_no): * intl-win32.c (mswindows_multibyte_to_unicode_print): * intl-win32.c (complex_vars_of_intl_win32): * keymap.c: * keymap.c (print_keymap): * keymap.c (ensure_meta_prefix_char_keymapp): * keymap.c (Fkey_description): * keymap.c (Ftext_char_description): * lisp.h: * lisp.h (struct): * lisp.h (DECLARE_INLINE_HEADER): * lread.c (Fload_internal): * lread.c (locate_file): * lread.c (read_escape): * lread.c (read_raw_string): * lread.c (read1): * lread.c (read_list): * lread.c (read_compiled_function): * lread.c (init_lread): * lrecord.h: * marker.c (print_marker): * marker.c (marker_equal): * menubar-msw.c (displayable_menu_item): * menubar-x.c (command_builder_operate_menu_accelerator): * menubar.c (vars_of_menubar): * minibuf.c (reinit_complex_vars_of_minibuf): * minibuf.c (complex_vars_of_minibuf): * mule-charset.c (Fmake_charset): * mule-charset.c (complex_vars_of_mule_charset): * mule-coding.c (iso2022_print): * mule-coding.c (fixed_width_query): * number.c (bignum_print): * number.c (ratio_print): * number.c (bigfloat_print): * number.c (bigfloat_finalize): * objects-msw.c: * objects-msw.c (mswindows_color_to_string): * objects-msw.c (mswindows_color_list): * objects-tty.c: * objects-tty.c (tty_font_list): * objects-tty.c (tty_find_charset_font): * objects-xlike-inc.c (xft_find_charset_font): * objects-xlike-inc.c (endif): * print.c: * print.c (write_istring): * print.c (write_ascstring): * print.c (Fterpri): * print.c (Fprint): * print.c (print_error_message): * print.c (print_vector_internal): * print.c (print_cons): * print.c (print_string): * print.c (printing_unreadable_object): * print.c (print_internal): * print.c (print_float): * print.c (print_symbol): * process-nt.c (mswindows_report_winsock_error): * process-nt.c (nt_canonicalize_host_name): * process-unix.c (unix_canonicalize_host_name): * process.c (print_process): * process.c (report_process_error): * process.c (report_network_error): * process.c (make_process_internal): * process.c (Fstart_process_internal): * process.c (status_message): * process.c (putenv_internal): * process.c (vars_of_process): * process.h: * profile.c (vars_of_profile): * rangetab.c (print_range_table): * realpath.c (vars_of_realpath): * redisplay.c (vars_of_redisplay): * search.c (wordify): * search.c (Freplace_match): * sheap.c (sheap_adjust_h): * sound.c (report_sound_error): * sound.c (Fplay_sound_file): * specifier.c (print_specifier): * symbols.c (Fsubr_name): * symbols.c (do_symval_forwarding): * symbols.c (set_default_buffer_slot_variable): * symbols.c (set_default_console_slot_variable): * symbols.c (store_symval_forwarding): * symbols.c (default_value): * symbols.c (defsymbol_massage_name_1): * symbols.c (defsymbol_massage_name_nodump): * symbols.c (defsymbol_massage_name): * symbols.c (defsymbol_massage_multiword_predicate_nodump): * symbols.c (defsymbol_massage_multiword_predicate): * symbols.c (defsymbol_nodump): * symbols.c (defsymbol): * symbols.c (defkeyword): * symbols.c (defkeyword_massage_name): * symbols.c (check_module_subr): * symbols.c (deferror_1): * symbols.c (deferror): * symbols.c (deferror_massage_name): * symbols.c (deferror_massage_name_and_message): * symbols.c (defvar_magic): * symeval.h: * symeval.h (DEFVAR_SYMVAL_FWD): * sysdep.c: * sysdep.c (init_system_name): * sysdll.c: * sysdll.c (MAYBE_PREPEND_UNDERSCORE): * sysdll.c (dll_function): * sysdll.c (dll_variable): * sysdll.c (dll_error): * sysdll.c (dll_open): * sysdll.c (dll_close): * sysdll.c (image_for_address): * sysdll.c (my_find_image): * sysdll.c (search_linked_libs): * sysdll.h: * sysfile.h: * sysfile.h (DEFAULT_DIRECTORY_FALLBACK): * syswindows.h: * tests.c (DFC_CHECK_LENGTH): * tests.c (DFC_CHECK_CONTENT): * tests.c (Ftest_hash_tables): * text.c (vars_of_text): * text.h: * tooltalk.c (tt_opnum_string): * tooltalk.c (tt_message_arg_ival_string): * tooltalk.c (Ftooltalk_default_procid): * tooltalk.c (Ftooltalk_default_session): * tooltalk.c (init_tooltalk): * tooltalk.c (vars_of_tooltalk): * ui-gtk.c (Fdll_load): * ui-gtk.c (type_to_marshaller_type): * ui-gtk.c (Fgtk_import_function_internal): * ui-gtk.c (emacs_gtk_object_printer): * ui-gtk.c (emacs_gtk_boxed_printer): * unicode.c (unicode_to_ichar): * unicode.c (unicode_print): * unicode.c (unicode_query): * unicode.c (vars_of_unicode): * unicode.c (complex_vars_of_unicode): * win32.c: * win32.c (mswindows_report_process_error): * window.c (print_window): * xemacs.def.in.in: BASIC IDEA: Further fixing up uses of char * and CIbyte * to reflect their actual semantics; Mule-izing some code; redoing of the not-yet-working code to handle message translation. Clean up code to handle message-translation (not yet working). Create separate versions of build_msg_string() for working with Ibyte *, CIbyte *, and Ascbyte * arguments. Assert that Ascbyte * arguments are pure-ASCII. Make build_msg_string() be the same as build_msg_ascstring(). Create same three versions of GETTEXT() and DEFER_GETTEXT(). Also create build_defer_string() and variants for the equivalent of DEFER_GETTEXT() when building a string. Remove old CGETTEXT(). Clean up code where GETTEXT(), DEFER_GETTEXT(), build_msg_string(), etc. was being called and introduce some new calls to build_msg_string(), etc. Remove GETTEXT() from calls to weird_doc() -- we assume that the message snarfer knows about weird_doc(). Remove uses of DEFER_GETTEXT() from error messages in sysdep.c and instead use special comments /* @@@begin-snarf@@@ */ and /* @@@end-snarf@@@ */ that the message snarfer presumably knows about. Create build_ascstring() and use it in many instances in place of build_string(). The purpose of having Ascbyte * variants is to make the code more self-documenting in terms of what sort of semantics is expected for char * strings. In fact in the process of looking for uses of build_string(), much improperly Mule-ized was discovered. Mule-ize a lot of code as described in previous paragraph, e.g. in sysdep.c. Make the error functions take Ascbyte * strings and fix up a couple of places where non-pure-ASCII strings were being passed in (file-coding.c, mule-coding.c, unicode.c). (It's debatable whether we really need to make the error functions work this way. It helps catch places where code is written in a way that message translation won't work, but we may well never implement message translation.) Make staticpro() and friends take Ascbyte * strings instead of raw char * strings. Create a const_Ascbyte_ptr dynarr type to describe what's held by staticpro_names[] and friends, create pdump descriptions for const_Ascbyte_ptr dynarrs, and use them in place of specially-crafted staticpro descriptions. Mule-ize certain other functions (e.g. x_event_name) by correcting raw use of char * to Ascbyte *, Rawbyte * or another such type, and raw use of char[] buffers to another type (usually Ascbyte[]). Change many uses of write_c_string() to write_msg_string(), write_ascstring(), etc. Mule-ize emodules.c, emodules.h, sysdll.h. Fix some un-Mule-ized code in intl-win32.c. A comment in event-Xt.c and the limitations of the message snarfer (make-msgfile or whatever) is presumably incorrect -- it should be smart enough to handle function calls spread over more than one line. Clean up code in event-Xt.c that was written awkwardly for this reason. In config.h.in, instead of NEED_ERROR_CHECK_TYPES_INLINES, create a more general XEMACS_DEFS_NEEDS_INLINE_DECLS to indicate when inlined functions need to be declared in xemacs.defs.in.in, and make use of it in xemacs.defs.in.in. We need to do this because postgresql.c now calls qxestrdup(), which is an inline function. Make nconc2() and other such functions MODULE_API and put them in xemacs.defs.in.in since postgresql.c now uses them. Clean up indentation in lread.c and a few other places. In text.h, document ASSERT_ASCTEXT_ASCII() and ASSERT_ASCTEXT_ASCII_LEN(), group together the stand-in encodings and add some more for DLL symbols, function and variable names, etc.
author Ben Wing <ben@xemacs.org>
date Tue, 26 Jan 2010 23:22:30 -0600
parents 3ecd8885ac67
children 308d34e9f07d
line wrap: on
line source

;;; auto-show.el --- perform automatic horizontal scrolling as point moves

;; Copyright (C) 1997 Free Software Foundation, Inc.
;; This file is in the public domain.

;; Author: Pete Ware <ware@cis.ohio-state.edu>
;; Maintainer: XEmacs Development Team
;; Keywords: extensions, internal, dumped

;; 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: Emacs/Mule zeta.

;;; Commentary:

;; This file is dumped with XEmacs.

;; Modified by: Ben Wing <ben@xemacs.org>

;; This file provides functions that
;; automatically scroll the window horizontally when the point moves
;; off the left or right side of the window.

;; Once this library is loaded, automatic horizontal scrolling
;; occurs whenever long lines are being truncated.
;; To request truncation of long lines, set the variable
;; Setting the variable `truncate-lines' to non-nil.
;; You can do this for all buffers as follows:
;;
;; (set-default 'truncate-lines t)

;; Here is how to do it for C mode only:
;;
;; (set-default 'truncate-lines nil)	; this is the original value
;; (defun my-c-mode-hook ()
;;   "Run when C-mode starts up.  Changes ..."
;;   ... set various personal preferences ...
;;   (setq truncate-lines t))
;; (add-hook 'c-mode-hook 'my-c-mode-hook)
;;
;;
;; As a finer level of control, you can still have truncated lines but
;; without the automatic horizontal scrolling by setting the buffer
;; local variable `auto-show-mode' to nil.  The default value is t.
;; The command `auto-show-mode' toggles the value of the variable
;; `auto-show-mode'.

;;; Code:

(defgroup auto-show nil
  "Perform automatic horizontal scrolling as point moves."
  :group 'display
  :group 'extensions)

;; This is preloaded, so we don't need special :set, :require, etc.
(defcustom auto-show-mode t
  "*Non-nil enables automatic horizontal scrolling, when lines are truncated.
The default value is t.  To change the default, do this:
	(set-default 'auto-show-mode nil)
See also command `auto-show-mode'.
This variable has no effect when lines are not being truncated.
This variable is automatically local in each buffer where it is set."
  :type 'boolean
  :group 'auto-show)

(make-variable-buffer-local 'auto-show-mode)

(defcustom auto-show-shift-amount 8 
  "*Extra columns to scroll. for automatic horizontal scrolling."
  :type 'integer
  :group 'auto-show)

(defcustom auto-show-show-left-margin-threshold 50
  "*Threshold column for automatic horizontal scrolling to the right.
If point is before this column, we try to scroll to make the left margin
visible.  Setting this to 0 disables this feature."
  :type 'number
  :group 'auto-show)

(defun auto-show-mode (arg)
  "Turn automatic horizontal scroll mode on or off.
With arg, turn auto scrolling on if arg is positive, off otherwise.
This mode is enabled or disabled for each buffer individually.
It takes effect only when `truncate-lines' is non-nil."
  (interactive "P")
  (setq auto-show-mode
	(if (null arg)
	    (not auto-show-mode)
	  (> (prefix-numeric-value arg) 0))))

;; XEmacs addition:
(defvar auto-show-inhibiting-commands
  '(scrollbar-char-left
    scrollbar-char-right
    scrollbar-page-left
    scrollbar-page-right
    scrollbar-to-left
    scrollbar-to-right
    scrollbar-horizontal-drag)
  "Commands that inhibit auto-show behavior.
This normally includes the horizontal scrollbar commands.")

;; XEmacs addition:
(defun auto-show-should-take-action-p ()
  (and auto-show-mode (window-truncated-p)
       (equal (window-buffer) (current-buffer))
       (not (memq this-command auto-show-inhibiting-commands))))

;; XEmacs addition:
(defun auto-show-make-region-visible (start end)
  "Move point in such a way that the region (START, END) is visible.
This only does anything if auto-show-mode is enabled, and it doesn't
actually do any horizontal scrolling; rather, it just sets things up so
that the region will be visible when `auto-show-make-point-visible'
is next called (this happens after every command)."
  (if (auto-show-should-take-action-p)
      (let* ((scroll (window-hscroll))	;how far window is scrolled
	     (w-width (- (window-width) 
			 (if (> scroll 0)
			     2 1)))	;how wide window is on the screen
	     (right-col (+ scroll w-width))
	     (start-col (save-excursion (goto-char start) (current-column)))
	     (end-col (save-excursion (goto-char end) (current-column))))
	(cond ((and (>= start-col scroll)
		    (<= end-col right-col))
	       ;; already completely visible
	       nil)
	      ((< start-col scroll)
	       (scroll-right (- scroll start-col)))
	      (t
	       (scroll-left (- end-col right-col)))))))

(defun auto-show-make-point-visible (&optional ignore-arg)
  "Scroll horizontally to make point visible, if that is enabled.
This function only does something if `auto-show-mode' is non-nil
and longlines are being truncated in the selected window.
See also the command `auto-show-mode'."
  (interactive)
  ;; XEmacs change
  (if (auto-show-should-take-action-p)
      (let* ((col (current-column))	;column on line point is at
	     (scroll (window-hscroll))	;how far window is scrolled
	     (w-width (- (window-width) 
			 (if (> scroll 0)
			     2 1)))	;how wide window is on the screen
	     (right-col (+ scroll w-width)))
	(if (and (< col auto-show-show-left-margin-threshold)
		 (< col (window-width))
		 (> scroll 0))
	    (scroll-right scroll)
	  (if (< col scroll)		;to the left of the screen
	      (scroll-right (+ (- scroll col) auto-show-shift-amount))
	    (if (or (> col right-col)	;to the right of the screen
		    (and (= col right-col)
			 (not (eolp))))
		(scroll-left (+ auto-show-shift-amount 
				(- col (+ scroll w-width))))))))))

;; XEmacs change:
;; #### instead of this, we kludgily call it from the C code, to make sure
;; that it's done after any other things on post-command-hook (which might
;; move point).
;; Do auto-scrolling after commands.
;;(add-hook 'post-command-hook 'auto-show-make-point-visible)

;; If being dumped, turn it on right away.
(when (boundp 'pureload)
  (auto-show-mode 1))

;; Do auto-scrolling in comint buffers after process output also.
; XEmacs -- don't do this now, it messes up comint.
;(add-hook 'comint-output-filter-functions 'auto-show-make-point-visible t)

(provide 'auto-show)

;;; auto-show.el ends here