contiguous chunk of outq to emulation routine. Fix based on patch
from M. Drochner, modified to call output routine once with each
contiguous chunk when the ring buffer wraps around.
improvement in the "cat /usr/share/misc/termcap" benchmark on 486/75
ttwrite queues data for us in OBUFSIZ chunks. If we only consume
OBUFSIZ-1 bytes per call to wsdisplaystart(), we're *guaranteed* to
fall behind when given maximum-sized reads (which will defer
processing the leftovers until ttrstrt gets called, after a timeout)
Note that OBUFSIZ*4 may be overkill; OBUFSIZ*3 may be sufficient to
get maximal performance; OBUFSIZ*2 resulted in only about a 2.5x
performance improvement, but it's 2am and I've done enough tweaking
for the night.
1. If the current screen becomes invalid (ie no focus anymore), always
set the keyboard to translating mode. Otherwise, we could get stuck
because the command keystokes don't come through.
2. Catch errors in attaching to a process (X server) - For this,
implement a callback mechanism similar to the detach case. Add an
argument to report an errno via callback.
add handling of a "close all" command
-split out code common with wsdisplay_delscreen() into
wsdisplay_closescreen()
-add ttymodem call to signal a HUP to the application if the screen
is closed
-add flag to force a "clear screen" on close (XXX should actually be
controlled from userland)
-remove checks for existence of "reset" entries in the emulations - this
is required now
to download fonts and a per-screen call to select a font
allows easier sharing of ressources in the display driver
change the parameters to the load_font driver vector to pass all
available font information
its real meaning
support allocation and deallocation of virtual screens at runtime
implement a "control device" (minor number = 255) and ioctl()s for screen
allocation/deallocation
minor fixes to consistency checks / error handling
min() et al. did unsigned comparisions before)
make ROWS_ABOVE / ROWS_BELOW return signed values, the negative results
occur if the cursor is outside the scrolling region
the amount of statekeeping in drivers for LK201-like keyboards, and it
might be useful to resync after resets or overflows.
(reused the unused WSCONS_EVENT_KEY_OTHER event ID)
Implement the necessary decoding bits.
(again); put some constant data into shared structures. This makes it
more look like the mouse part, and it helps USB integration.
Implement wskbd_enable() to enable/disable the keyboard.
-display DEC special graphics and DEC technical characters as far as
possible
-implement the font switching controls (need documentation!)
-behave well if double-width characters are requested
-simplify the state machine: store CSI command modifiers in variables
instead of dedicating own states to each of them
to take a single character at a time, where the character is an "int" now.
The old interface (took a string) was never called with more than 1
char to print, and the "int" allows us to handle charsets cleanly.
It should be able to parse escape sequences up to VT300, but not everything
is implemented. Most notably, there is no font handling - all displayable
characters are handed to the graphics driver. To solve this, a serious
interface change to the graphics driver is needed (Unicode?).
terminal emulation. For this, change the interface to wsdisplay_kbdinput()
to take a "keysym_t" as argument. From there, the code is handed to the
appropriate emulation module via a new entry point: "translate".
Nuke the ioctls dealing with global assignment of character sequences
to keypad/function keys.
The "sun" emulation works much better now!
as with user-land programs, include files are installed by each directory
in the tree that has includes to install. (This allows more flexibility
as to what gets installed, makes 'partial installs' easier, and gives us
more options as to which machines' includes get installed at any given
time.) The old SYS_INCLUDES={symlinks,copies} behaviours are _both_
still supported, though at least one bug in the 'symlinks' case is
fixed by this change. Include files can't be build before installation,
so directories that have includes as targets (e.g. dev/pci) have to move
those targets into a different Makefile.
The graphics device driver passes a "default attribute" for normal text
output to the wscons framework. If the emulation module needs more
attributes (for different "renditions") it can allocate them via a
callback.
For now, only the "sun" emulation makes use of it.
8 bits. This allows to OR them with keycodes.
This is probably a workaround for namespace confusion happening else-
where (in wskbdutil.c:ksym_upcase() perhaps?), but it helps without
too much digging into the details.
drochner