Commit Graph

18 Commits

Author SHA1 Message Date
Nicholas Marriott
e63567d51c Support "alternate screen" mode (terminfo smcup/rmcup) typically used by full
screen interactive programs to preserve the screen contents. When activated, it
saves a copy of the visible grid and disables scrolling into and resizing out
of the history; when deactivated the visible data is restored and the history
reenabled.
2009-07-14 06:40:33 +00:00
Nicholas Marriott
295879cced Change inserting and deleting lines inside the scroll region to properly clear
lines that should be inserted/deleted but not moved. Fixes problems with mutt
reported by Brian Lewis, thanks.
2009-07-09 18:04:53 +00:00
Nicholas Marriott
e073441c36 Tidy by removing unused argument from grid_view_{insert,delete}_line_region
functions (currently don't fully work, this is to make fix easier).
2009-07-09 18:04:17 +00:00
Nicholas Marriott
35092835b0 Fix two errors with character/line insertion and deletion: the maximum number
of characters which may be inserted or deleted is the screen width, not one
less (and similarly for lines and height); and if characters or lines are
deleted by moving the ones that follow, the space at the end needs to be
cleared.

This appears to solve long-standing redraw issues most visible when using the
force-width option then scrolling in view(1) or unwrapping lines in emacs.
2009-07-01 19:14:33 +00:00
Nicholas Marriott
bb459beb03 Whitespace and more syncing. 2009-06-25 16:34:50 +00:00
Nicholas Marriott
a5830b9603 Restore $Id$ and add script to do so. 2009-06-25 16:21:32 +00:00
Nicholas Marriott
853ad68162 Add a dedicated function to convert a line into a string and use it to simplify the search window function. 2009-06-25 16:02:37 +00:00
Nicholas Marriott
cf7b384c43 Better UTF-8 support, including combined characters. Unicode data is now stored
as UTF-8 in a separate array, the code does a lookup into this every time it
gets to a UTF-8 cell. Zero width characters are just appended onto the UTF-8
data for the previous cell. This also means that almost no bytes extra are
wasted non-Unicode data (yay).

Still some oddities, such as copy mode skips over wide characters in a strange
way, and the code could do with some tidying.
2009-03-28 20:17:29 +00:00
Nicholas Marriott
34dd72f008 _fill functions are no longer needed. Nuke them. 2009-03-28 16:57:03 +00:00
Nicholas Marriott
abf170d6d0 Whoops. Missed a few changes. 2009-03-28 16:55:46 +00:00
Nicholas Marriott
6c0728fe07 Step 2 of the Grand Plan To Make UTF-8 Better.
Split grid into two arrays, one containing grid attributes/flags/colours (keeps
the name grid_cell for now) and a separate with the character data (called
text). The text is stored as a u_short but is treated as a uint64_t elsewhere;
eventually the grid will have two arrays.

I'm not happy with the naming so that might change.

Still need to decide where to go from here. I'm not sure whether to combine
the peek/set functions together, and also whether to continue to treat the
text as a uint64_t (and convert to/from Unicode) or make it a char array
(of size one when UTF-8 disabled, eight when enabled) and keep everything
as UTF-8.

Also since UTF-8 will eventually become an attribute of the grid itself it
might be nice to move all the padding crap into grid.c.
2009-03-28 16:30:05 +00:00
Nicholas Marriott
989d67ccd7 struct grid_data -> struct grid. Stage 1 of the Grand Plan To Make UTF-8 Better. 2009-03-28 15:43:41 +00:00
Nicholas Marriott
a1b43faa43 Trim spaces. 2009-01-10 01:51:22 +00:00
Nicholas Marriott
ac3fe6512f Some tweaks found by LLVM courtesy of IcePic. 2009-01-05 11:04:06 +00:00
Nicholas Marriott
8fb10c11a0 Don't segfault on last character. 2008-12-11 17:06:28 +00:00
Nicholas Marriott
631a45ecb5 Calculate y properly. 2008-09-28 20:34:22 +00:00
Nicholas Marriott
62457bce0b Trim. 2008-09-26 06:45:28 +00:00
Nicholas Marriott
efe557313a Internal screen data rewrite for better 256 colour/UTF-8 support. 2008-09-25 20:08:57 +00:00