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VE: add support for tight screens

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This commit is contained in:
Virgil Dupras 2020-11-13 20:44:39 -05:00
parent 6a7c8ae1c8
commit 3f38c025e7
9 changed files with 100 additions and 75 deletions
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2
blk/125
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@ -1,2 +1,2 @@
-20 LOAD+ ( B105, block editor )
1 6 LOADR+
1 7 LOADR+

10
blk/126
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@ -1,16 +1,16 @@
CREATE CMD 2 C, '$' C, 0 C,
CREATE PREVPOS 0 , CREATE PREVBLK 0 ,
CREATE PREVPOS 0 , CREATE PREVBLK 0 , CREATE xoff 0 ,
: MIN ( n n - n ) 2DUP > IF SWAP THEN DROP ;
: MAX ( n n - n ) 2DUP < IF SWAP THEN DROP ;
: large? COLS 67 > ; : col- 67 COLS MIN -^ ;
: acc@ ACC @ 1 MAX ;
: width large? IF 64 ELSE COLS THEN ;
: acc@ ACC @ 1 MAX ; : pos@ ( x y -- ) EDPOS @ 64 /MOD ;
: num ACC @ SWAP _pdacc IF ACC ! ELSE DROP THEN ;
: nspcs ( n -- , spit n space ) 0 DO SPC LOOP ;
: aty 0 SWAP AT-XY ;
: clrscr LINES 0 DO I aty COLS nspcs LOOP ;
: gutter ( ln n ) OVER + SWAP DO 67 I AT-XY '|' EMIT LOOP ;
: status 0 aty ." BLK" SPC BLK> ? SPC ACC ?
SPC EDPOS @ 64 /MOD . ',' EMIT . SPC
BLKDTY @ IF '*' EMIT THEN 10 nspcs ;
SPC pos@ . ',' EMIT . xoff @ IF '>' EMIT THEN SPC
BLKDTY @ IF '*' EMIT THEN 4 nspcs ;
: nums 17 1 DO 2 I + aty I . SPC SPC LOOP ;
: mode! ( c -- ) 4 col- 0 AT-XY ;

22
blk/127
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@ -1,16 +1,16 @@
: contents 16 0 DO large? IF 3 ELSE 0 THEN I 3 + AT-XY
64 I * BLK( + DUP 3 col- + SWAP DO
I C@ 0x20 MAX EMIT LOOP LOOP
: mode! ( c -- ) 4 col- 0 AT-XY ;
: contents
16 0 DO
large? IF 3 ELSE 0 THEN I 3 + AT-XY
64 I * BLK( + ( lineaddr ) xoff @ + DUP width + SWAP
DO I C@ 0x20 MAX EMIT LOOP LOOP
large? IF 3 16 gutter THEN ;
: selblk BLK> @ PREVBLK ! BLK@ contents ;
: pos! ( newpos -- ) EDPOS @ PREVPOS !
DUP 0< IF DROP 0 THEN 1023 MIN EDPOS ! ;
: setpos ( -- ) EDPOS @ 64 /MOD
3 + ( header ) SWAP large? IF 3 + ( gutter ) THEN
SWAP AT-XY ;
: xoff? pos@ DROP ( x )
xoff @ ?DUP IF < IF 0 xoff ! contents THEN ELSE
width >= IF 64 COLS - xoff ! contents THEN THEN ;
: setpos ( -- ) pos@ 3 + ( header ) SWAP ( y x ) xoff @ -
large? IF 3 + ( gutter ) THEN SWAP AT-XY ;
: cmv ( n -- , char movement ) acc@ * EDPOS @ + pos! ;
: buftype ( buf ln -- )
3 OVER AT-XY KEY DUP EMIT
DUP 0x20 < IF 2DROP DROP EXIT THEN
( buf ln c ) 4 col- nspcs SWAP 4 SWAP AT-XY ( buf c )
SWAP C!+ IN( _zbuf (rdln) IN( SWAP 63 MOVE ;

20
blk/128
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@ -1,14 +1,6 @@
: $G ACC @ selblk ;
: $[ BLK> @ acc@ - selblk ;
: $] BLK> @ acc@ + selblk ;
: $t PREVBLK @ selblk ;
: $I mode! 'I' EMIT IBUF 1 buftype _i contents mode! SPC ;
: $F mode! 'F' EMIT FBUF 2 buftype _F setpos mode! SPC ;
: $Y Y ;
: $E _E contents ;
: $X acc@ _X contents ;
: $h -1 cmv ; : $l 1 cmv ; : $k -64 cmv ; : $j 64 cmv ;
: $H EDPOS @ 0x3c0 AND pos! ;
: $L EDPOS @ 0x3f OR pos! ;
: $g ACC @ 1 MAX 1- 64 * pos! ;
: $@ BLK> @ BLK@* @ EXECUTE 0 BLKDTY ! contents ;
: buftype ( buf ln -- )
3 OVER AT-XY KEY DUP EMIT
DUP 0x20 < IF 2DROP DROP EXIT THEN
( buf ln c ) 4 col- nspcs SWAP 4 SWAP AT-XY ( buf c )
SWAP C!+ IN( _zbuf (rdln) IN( SWAP 63 MOVE ;

26
blk/129
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@ -1,12 +1,14 @@
: $w EDPOS @ BLK( + acc@ 0 DO
BEGIN C@+ WS? UNTIL BEGIN C@+ WS? NOT UNTIL LOOP
1- BLK( - pos! ;
: $W EDPOS @ BLK( + acc@ 0 DO
1+ BEGIN C@+ WS? NOT UNTIL BEGIN C@+ WS? UNTIL LOOP
2- BLK( - pos! ;
: $b EDPOS @ BLK( + acc@ 0 DO
1- BEGIN C@- WS? NOT UNTIL BEGIN C@- WS? UNTIL LOOP
2+ BLK( - pos! ;
: $B EDPOS @ BLK( + acc@ 0 DO
BEGIN C@- WS? UNTIL BEGIN C@- WS? NOT UNTIL LOOP
1+ BLK( - pos! ;
: $G ACC @ selblk ;
: $[ BLK> @ acc@ - selblk ;
: $] BLK> @ acc@ + selblk ;
: $t PREVBLK @ selblk ;
: $I mode! 'I' EMIT IBUF 1 buftype _i contents mode! SPC ;
: $F mode! 'F' EMIT FBUF 2 buftype _F setpos mode! SPC ;
: $Y Y ;
: $E _E contents ;
: $X acc@ _X contents ;
: $h -1 cmv ; : $l 1 cmv ; : $k -64 cmv ; : $j 64 cmv ;
: $H EDPOS @ 0x3c0 AND pos! ;
: $L EDPOS @ 0x3f OR pos! ;
: $g ACC @ 1 MAX 1- 64 * pos! ;
: $@ BLK> @ BLK@* @ EXECUTE 0 BLKDTY ! contents ;

27
blk/130
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@ -1,15 +1,12 @@
: $f EDPOS @ PREVPOS @ 2DUP = IF 2DROP EXIT THEN
2DUP > IF DUP pos! SWAP THEN
( p1 p2, p1 < p2 ) OVER - 64 MIN ( pos len ) FBUF _zbuf
SWAP _cpos FBUF ( len src dst ) ROT MOVE ;
: $R ( replace mode )
mode! 'R' EMIT
BEGIN setpos KEY DUP BS? IF -1 EDPOS +! DROP 0 THEN
DUP 0x20 >= IF
DUP EMIT EDPOS @ _cpos C! 1 EDPOS +! BLK!! 0
THEN UNTIL mode! SPC contents ;
: $O _U EDPOS @ 0x3c0 AND DUP pos! _cpos _zbuf BLK!! contents ;
: $o EDPOS @ 0x3c0 < IF EDPOS @ 64 + EDPOS ! $O THEN ;
: $D $H 64 icpy
acc@ 0 DO 16 EDPOS @ 64 / DO I _mvln- LOOP LOOP
BLK!! contents ;
: $w EDPOS @ BLK( + acc@ 0 DO
BEGIN C@+ WS? UNTIL BEGIN C@+ WS? NOT UNTIL LOOP
1- BLK( - pos! ;
: $W EDPOS @ BLK( + acc@ 0 DO
1+ BEGIN C@+ WS? NOT UNTIL BEGIN C@+ WS? UNTIL LOOP
2- BLK( - pos! ;
: $b EDPOS @ BLK( + acc@ 0 DO
1- BEGIN C@- WS? NOT UNTIL BEGIN C@- WS? UNTIL LOOP
2+ BLK( - pos! ;
: $B EDPOS @ BLK( + acc@ 0 DO
BEGIN C@- WS? UNTIL BEGIN C@- WS? NOT UNTIL LOOP
1+ BLK( - pos! ;

30
blk/131
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@ -1,15 +1,15 @@
: UPPER DUP 'a' 'z' =><= IF 32 - THEN ;
: handle ( c -- f )
DUP '0' '9' =><= IF num 0 EXIT THEN
DUP CMD 2+ C! CMD FIND IF EXECUTE ELSE DROP THEN
0 ACC ! UPPER 'Q' = ;
: bufp ( buf -- )
DUP 3 col- + SWAP DO I C@ 0x20 MAX EMIT LOOP ;
: bufs
1 aty ." I: " IBUF bufp
2 aty ." F: " FBUF bufp
large? IF 0 3 gutter THEN ;
: VE
clrscr 0 ACC ! 0 PREVPOS ! nums contents
BEGIN status bufs setpos KEY handle UNTIL
19 aty (infl) ;
: $f EDPOS @ PREVPOS @ 2DUP = IF 2DROP EXIT THEN
2DUP > IF DUP pos! SWAP THEN
( p1 p2, p1 < p2 ) OVER - 64 MIN ( pos len ) FBUF _zbuf
SWAP _cpos FBUF ( len src dst ) ROT MOVE ;
: $R ( replace mode )
mode! 'R' EMIT
BEGIN setpos KEY DUP BS? IF -1 EDPOS +! DROP 0 THEN
DUP 0x20 >= IF
DUP EMIT EDPOS @ _cpos C! 1 EDPOS +! BLK!! 0
THEN UNTIL mode! SPC contents ;
: $O _U EDPOS @ 0x3c0 AND DUP pos! _cpos _zbuf BLK!! contents ;
: $o EDPOS @ 0x3c0 < IF EDPOS @ 64 + EDPOS ! $O THEN ;
: $D $H 64 icpy
acc@ 0 DO 16 EDPOS @ 64 / DO I _mvln- LOOP LOOP
BLK!! contents ;

15
blk/132 Normal file
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@ -0,0 +1,15 @@
: UPPER DUP 'a' 'z' =><= IF 32 - THEN ;
: handle ( c -- f )
DUP '0' '9' =><= IF num 0 EXIT THEN
DUP CMD 2+ C! CMD FIND IF EXECUTE ELSE DROP THEN
0 ACC ! UPPER 'Q' = ;
: bufp ( buf -- )
DUP 3 col- + SWAP DO I C@ 0x20 MAX EMIT LOOP ;
: bufs
1 aty ." I: " IBUF bufp
2 aty ." F: " FBUF bufp
large? IF 0 3 gutter THEN ;
: VE
clrscr 0 ACC ! 0 PREVPOS ! nums contents
BEGIN xoff? status bufs setpos KEY handle UNTIL
19 aty (infl) ;

23
doc/ed.txt
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@ -80,8 +80,7 @@ E: Run X with n = length of FBUF.
# Visual editor
This editor, unlike the Block Editor, is grid-based instead of
being command-based. It requires the AT-XY, COLS and LINES words
to be implemented.
being command-based. It requires the Grid subsystem (B401).
It is loaded with "125 LOAD" and invoked with "VE". Note that
this also fully loads the Block Editor.
@ -141,3 +140,23 @@ cursor. Press return to return to normal mode.
'@' re-reads current block even if it's dirty, thus undoing
recent changes.
# Tight screens
Blocks being 64 characters wide, using the Visual editor on a
screen that is not 64 characters wide is a bit less convenient,
but very possible.
When VE is in a "tight screen" situation, it behaves different-
ly: no gutter, no line number. It displays as much of the "left"
part of the block as it can, but truncate every line.
The right part is still accessible, however. If the cursor moves
to a part of the block that is invisible, VE will "slide" right
so that the cursor is shown. It will indicate it "slid" mode by
adding a ">" next to the cursor address in the status bar.
To slide back left, simply move the cursor to the invisible part
of the left half of the block.
Other than that, VE works the same.