bacd15cb1f
This contains the full eti (panel, form, menu) extensions. bmake glue to follow. Obtained from: ftp://ftp.clark.net/pub/dickey/ncurses
252 lines
10 KiB
Plaintext
252 lines
10 KiB
Plaintext
-- $Id: TO-DO,v 1.39 1998/07/12 00:25:39 tom Exp $
|
|
|
|
SHORT-TERM TO-DO ITEMS:
|
|
|
|
Known Problems:
|
|
|
|
* GNAT does not put libraries in the correct order, so a build only links
|
|
properly if you use shared libraries since -lncurses is first.
|
|
|
|
* XPG4 specifies that the enhanced features are not available unless the
|
|
_XOPEN_SOURCE_EXTENDED test macro is defined by the application. Ncurses uses
|
|
this macro (incorrectly) to address a dependency upon wchar_t. The functions
|
|
which use wchar_t are not implemented, so the effect of the test macro is
|
|
pointless.
|
|
|
|
* The screen optimization has been tested only in an ad hoc manner. We should
|
|
develop a good set of regression tests to cover lib_doupdate.c and
|
|
lib_mvcur.c.
|
|
|
|
* Magic cookie support does not work, since the logic does not take into account
|
|
refresh. Also, the initial optimize does not adjust the current location
|
|
when a cookie is emitted.
|
|
|
|
* Scrolling optimization has holes: for example, it forces repaints of the
|
|
screen between calls to refresh().
|
|
|
|
* SVr4 uses slightly different rules for determining when softkeys are shown.
|
|
For example, they are initially displayed (before the ncurses 'e' test
|
|
activates them), and a touchwin can apparently also force them to be
|
|
displayed.
|
|
|
|
+ The code departs from perfect 8-bit cleanness in one respect; you cannot
|
|
specify a character \200 as part of a capability string, because the terminfo
|
|
library interprets \200 as a request to embed NUL (\000) at that point. This
|
|
is a legacy terminfo property we can't mess with.
|
|
|
|
* The window classes defined in the c++ subdirectory need documentation.
|
|
Some C++ programmer could earn a lot of good karma by doing this...
|
|
|
|
Portability (or lack thereof):
|
|
|
|
* Users of older System V UNIXes (but not Solaris, and probably not SVr4)
|
|
may trip over a known problem with the signal-handling code which causes
|
|
abrupt termination of ncurses applications following resume from a ^Z
|
|
suspend (this problem was first seen running lynx). You will not see
|
|
this problem if you are running Linux or one of the 4.4BSD derivatives
|
|
like FreeBSD, NetBSD, or BSDI. For details, see the analysis in the
|
|
header comment of ncurses/lib_tstp.c.
|
|
|
|
* In theory, vwprintw and vwscanf are supposed to use the older varargs.h
|
|
interface for handling variadic argument lists. Linux doesn't have
|
|
varargs.h, it has the newer X/Open-standard stdargs.h equivalent. So
|
|
these functions use stdargs instead. This is unlikely to be a problem
|
|
unless you're building ncurses on a System V old enough to only have
|
|
varargs.h. (Solaris 2.5.1 uses the stdarg.h binding as well).
|
|
|
|
* If you're using a BSD earlier than 4.4BSD, or a Linux old enough not to
|
|
have a native vsscanf(3) in its library, vwscanw() will not work. You lose.
|
|
(It should work on any System V, however). If you want to fix this, add
|
|
an implementation to ncurses/vsscanf.c.
|
|
|
|
* The demo build for the c++ library craps out with many link errors under gcc
|
|
2.6.3. We're told the C++ support in 2.6.3 is broken and that the right
|
|
fix is to upgrade to 2.7.0. This demo is also known to not build with
|
|
the Sun SPARCworks 4.1 C++ compiler, due to a problem resolving templates.
|
|
|
|
* Under Ultrix, configure craps out (Ultrix sh is lame). Run it under ksh.
|
|
|
|
* We've not tested the configure script with cross-compilers. The autoconf
|
|
tests are supposed to be able to support this (please report bugs). You will
|
|
have to configure and build in two steps. The first step must create the
|
|
automatically-generated sources (e.g., comp_captab.c) on your host machine.
|
|
Then, run "make mostlyclean", remove config.* from the top-level directory
|
|
and configure for the cross-compiler.
|
|
|
|
+ terminfo.5 does not format with the SunOS (and most other platform's) tbl
|
|
utility because it relies on a diversion for each table entry. Get the groff
|
|
package.
|
|
|
|
Untested features:
|
|
|
|
* The code for the HP color model using set_color_pair is untested.
|
|
|
|
* The code for handling soft labels on a terminal type with built-in support
|
|
for them (num_labels > 0, label_height, label_width, label_format, label_off,
|
|
label_on, plab_norm, lab_f*) has not been tested. The label_format and
|
|
lab_f* capabilities aren't presently used.
|
|
|
|
LONGER-TERM TO-DO ITEMS:
|
|
|
|
1. Extended COSE conformance
|
|
|
|
There is an XPG4 standard recently released which describes a superset
|
|
of the SVr4 API. The library is BASE conformant with this standard.
|
|
We would like to make ncurses fully conformant at the EXTENDED level
|
|
supporting internationalization.
|
|
|
|
Here are page references to all material involving wide or multi-byte
|
|
characters in Issue 4 of the XSI Curses standard, with notes on their
|
|
status in this implementation:
|
|
|
|
Page 1 (1.1.2) New Features discussion of internationalization.
|
|
Page 12 (2.4): Definition of cchar_t, wchar_t.
|
|
Page 16 (3.3.2): Introduction of multi-column characters.
|
|
Page 17-18 (3.3.5): Description of non-spacing characters.
|
|
Page 19-21 (3.4.2): Basic character operations.
|
|
Page 34 (addnstr): These should now call underlying wide-
|
|
character functions, and do (through waddnstr) if _XOPEN_SOURCE_EXTENDED is on).
|
|
Page 35 (addnwstr): wide-character add-string functions. All macros
|
|
except waddnwstr() which is not yet defined.
|
|
Page 36 (add_wch): wide-character add-char functions. All macros
|
|
except wadd_wch() which is not yet defined.
|
|
Page 39 (attr_get): implemented -- we've just made the current-
|
|
attributes field of the window an attr_t.
|
|
Page 43 (bkgrnd): None of these are implemented.
|
|
Page 45 (border_set): Neither of these is implemented.
|
|
Page 47 (box_set): box_set implemented as macro, but the underlying
|
|
wborder_set() is not yet defined.
|
|
Page 78 (echo_wchar): echo_wchar() implemented as macro, underlying
|
|
wecho_wchar() not yet implemented.
|
|
Page 81 (erasechar): Neither entry point is implemented.
|
|
Page 87 (getbkgrnd): Not implemented.
|
|
Page 88 (getcchar): Not implemented.
|
|
Page 93 (getn_wstr): All implemented (as macros) except the
|
|
underlying wgetn_wstr().
|
|
Page 97 (get_wch): All implemented (as macros) except the
|
|
underlying wget_wch().
|
|
Page 99 (get_wstr): Xref to page 93.
|
|
Page 105 (hline_set): All implemented (as macros) except the
|
|
underlying whline_set(), wvline_set().
|
|
Page 114 (innstr): Multi-byte character-completeness check is
|
|
not implemented.
|
|
Page 115 (innwstr): All implemented (as macros) except the
|
|
underlying winnw_str().
|
|
Page 119 (insnstr): Implementation may not be correct for multi-byte
|
|
characters.
|
|
Page 120 (ins_nwstr): Not implemented.
|
|
Page 121 (insstr): Xref to page 119.
|
|
Page 122 (instr): Xref to page 119.
|
|
Page 123 (ins_wch): Not implemented.
|
|
Page 124 (ins_wstr): Xref to page 120.
|
|
Page 126 (in_wch): Not implemented.
|
|
Page 127 (in_wchnstr): Not implemented.
|
|
Page 128 (inwstr): Xref to page 115.
|
|
Page 133 (killwchar): killwchar not implemented.
|
|
Page 158 (pechochar): pecho_wchar() not implemented.
|
|
Page 176 (setcchar): Not implemented.
|
|
Page 181 (slk_attroff): slk_wset not implemented.
|
|
Page 200 (ungetch): unget_wch() not implemented.
|
|
Page 203 (vidattr): vid_attr() and vid_puts() not implemented.
|
|
Page 206 (vline_set): Xref to page 105.
|
|
Page 214 (wunctrl): Not implemented.
|
|
Page 216 (curses.h): cchar_t, wint_t, wchar_t references.
|
|
Page 220 (curses.h): KEY_CODE_YES
|
|
|
|
Basically, the macro superstructure is there but the core is absent. We
|
|
need better multi-locale support guarantees from the OS to finish this.
|
|
If you are working on internationalization support, please contact us so
|
|
we can cooperate.
|
|
|
|
2. DOS port
|
|
|
|
Only 16 of the 55 files in the library depend on the terminfo format.
|
|
It should be possible to further kernelize the package, then rewrite
|
|
a small number of core files to produce a functionally-compatible
|
|
port that would do updates to a memory-mapped screen area. The first
|
|
result of this would be a DOS port.
|
|
|
|
3. X port
|
|
|
|
It would be nice if ncurses could recognize when it was running under X and
|
|
maintain its own window. With this feature, all ncurses programs would
|
|
automatically become X programs. The challenge is to handle resize events
|
|
properly.
|
|
|
|
4. Unused capabilities
|
|
|
|
The currently unused capabilities fall naturally into several groups:
|
|
|
|
A. Status-line capabilities:
|
|
|
|
Booleans: has_status_line, status_line_esc_ok.
|
|
Numerics: width_status_line.
|
|
Strings: dis_status_line, from_status_line, to_status_line.
|
|
|
|
System V Release 1 curses made no use of these at all. SVr4's use, if
|
|
any, is unknown. From the AT&T termcap file it looks like curses, in general,
|
|
shouldn't use them; terminal variants with status lines have their line count
|
|
decremented by 1, suggesting that curses is supposed to leave the status line
|
|
alone.
|
|
|
|
B. Printer capabilities:
|
|
|
|
Boolean: col_addr_glitch, cr_cancels_micro_mode, has_print_wheel,
|
|
row_addr_glitch, semi_auto_right_margin, cpi_changes_res,
|
|
lpi_changes_res.
|
|
Numeric: buffer_capacity, dot_horz_spacing, dot_vert_spacing,
|
|
max_micro_address, max_micro_jump, micro_col_size,
|
|
micro_line_size, number_of_pins, output_res_char,
|
|
output_res_line, output_res_horz_inch, print_rate,
|
|
wide_char_size, bit_image_entwining, bit_image_type.
|
|
String: down_half_line, form_feed, up_half_line, set_left_margin,
|
|
set_right_margin, clear_margins, change_char_pitch
|
|
... set_page_length (all the SVr4 printer caps),
|
|
|
|
Curses doesn't use these.
|
|
|
|
C. Printer-control capabilities:
|
|
|
|
Boolean: prtr_silent.
|
|
Strings: print_screen, prtr_on, prtr_off, prtr_non.
|
|
|
|
Curses doesn't use these.
|
|
|
|
D. Dialer strings:
|
|
|
|
Strings: hangup, dial_phone, quick_dial, tone, pulse, flash_hook,
|
|
fixed_pause, wait_tone.
|
|
|
|
Curses doesn't use these.
|
|
|
|
E. Window and virtual-terminal capabilities:
|
|
|
|
Numerics: maximum_windows, virtual_terminal.
|
|
Strings: req_for_input, create_window, goto_window, set_window.
|
|
|
|
These seem to be fossils from some AT&T experiments on character-based
|
|
window systems that never escaped the lab. The virtual_terminal cap had
|
|
something to do with building terminal emulations into tty line disciplines.
|
|
|
|
F. Unused VDT capabilities:
|
|
|
|
Booleans: erase_overstrike, has_meta_key, insert_null_glitch,
|
|
move_insert, dest_tabs_magic_smso, transparent_underline,
|
|
needs_xon_xoff, hard_cursor.
|
|
Numerics: lines_of_memory, buttons.
|
|
Strings: pkey_key, pkey_local, pkey_xmit, underline_char,
|
|
enter_xon_mode, exit_xon_mode, xon_character, xoff_character,
|
|
display_clock, remove_clock, user[0-5], display_pc_char,
|
|
enter_scancode_mode, exit_scancode_mode, pc_term_options,
|
|
scancode_escape, alt_scancode_esc.
|
|
|
|
These are the potentially important ones for ncurses. Notes:
|
|
|
|
i) ncurses doesn't need move_insert; it never uses cup/hpa/vpa while
|
|
insert_mode is on.
|
|
|
|
ii) We probably don't care about dest_tabs_magic_smso; only
|
|
Telerays used it and they're all long obsolete.
|
|
|
|
|