Ian Ward <[EMAIL PROTECTED]> wrote:
> Thomas Dickey wrote:
>> hmm - I've read Urwid, and most of the comments I've read in that regard
>> reflect problems in Urwid. Perhaps it's time for you to do a little
>> analysis.
>>
>> (looking forward to bug reports, rather than line noise)
> A fair request. My appologies for the inflammatory subject :-)
> When trying to check for user input without waiting I use code like:
> window_object.nodelay(1)
> curses.cbreak()
> input = window_object.getch()
> Occasionally (hard to reproduce reliably) the cbreak() call will raise
> an exception, but if I call it a second time before calling getch the
> code will work properly. This problem might be related to a signal
> interrupting the function call, I'm not sure.
perhaps a more complete test-case would let me test it and see.
> Also, screen resizing only seems to be reported once by getch() even if
> the user continues to resize the window. I have worked around this by
> calling curses.doupdate() between calls to getch(). Maybe this is by design?
Or perhaps it's some interaction with python - I don't know.
The applications that I use with resizing (and ncurses' test
programs) work smoothly enough.
> Finally, the curses escape sequence detection could be broadened. The
> top part of the curses_display module in Urwid defines many escape
> sequences I've run into that curses doesn't detect.
That's data (terminfo). ncurses is data-driven, doesn't "detect"
features of the terminal (though it does of course use environment
variables for locale, etc.).
xterm's terminfo lists a lot of function keys, for instance.
The limit for predefined function-key names for terminfo is 60,
but ncurses can accept extended terminfo descriptions (but I like to
limit the length and style of names so it's possible to access them
from termcap). One could define names like shift_f1, but then termcap
applications couldn't see them. (The last I knew, slang doesn't either,
but that's a different thread).
That's been true for about 6 years.
Current xterm's terminfo includes these names which apply to your
comment: The ones on the end are extended names that ncurses' tic
deduces from the terminfo file when it compiles it:
comparing xterm-new to xterm-xf86-v44.
comparing booleans.
comparing numbers.
comparing strings.
kf49: '\EO3P', NULL.
kf50: '\EO3Q', NULL.
kf51: '\EO3R', NULL.
kf52: '\EO3S', NULL.
kf53: '\E[15;3~', NULL.
kf54: '\E[17;3~', NULL.
kf55: '\E[18;3~', NULL.
kf56: '\E[19;3~', NULL.
kf57: '\E[20;3~', NULL.
kf58: '\E[21;3~', NULL.
kf59: '\E[23;3~', NULL.
kf60: '\E[24;3~', NULL.
kf61: '\EO4P', NULL.
kf62: '\EO4Q', NULL.
kf63: '\EO4R', NULL.
kind: '\E[1;2B', NULL.
kri: '\E[1;2A', NULL.
kDN: '\E[1;2B', NULL.
kDN5: '\E[1;5B', NULL.
kDN6: '\E[1;6B', NULL.
kLFT5: '\E[1;5D', NULL.
kLFT6: '\E[1;6D', NULL.
kRIT5: '\E[1;5C', NULL.
kRIT6: '\E[1;6C', NULL.
kUP: '\E[1;2A', NULL.
kUP5: '\E[1;5A', NULL.
kUP6: '\E[1;6A', NULL.
--
Thomas E. Dickey
http://invisible-island.net
ftp://invisible-island.net
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