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| author | user <user@clank> | 2026-07-16 16:30:33 +0200 |
|---|---|---|
| committer | user <user@clank> | 2026-07-16 16:30:33 +0200 |
| commit | fe51f65be393161da81d6db6144418c97a8e0fe7 (patch) | |
| tree | d80b52641b954a42ae532057727d9df27ba9b17a /src/osk.asm | |
| parent | osk: bind START to Enter (CR) (diff) | |
| download | gbos-fe51f65be393161da81d6db6144418c97a8e0fe7.tar.gz gbos-fe51f65be393161da81d6db6144418c97a8e0fe7.tar.xz gbos-fe51f65be393161da81d6db6144418c97a8e0fe7.zip | |
term/osk: scroll region so the OSK never hides the input line
The terminal now has a variable usable height (wTermRows). term_scroll and
cursor_down operate within [0 .. wTermRows-1], and term_set_rows(n) shrinks
or grows that region, scrolling the cursor up into view when it would fall
outside. osk_toggle shrinks the terminal to the rows above the keyboard on
show (18 - OSK_ROWS = 15) and restores full height on hide, so the active
line is always visible just above the docked keyboard, and hiding the OSK
reclaims all 18 rows.
Also add c/count.c ("count [n]", default 25): prints n numbered lines to
observe/debug scrolling and the scroll-region behavior. Registered as
program id 21 / bank 23. Fixed the arg to read argv[0] (getargs returns the
string after the command name).
Verified: filling the screen then opening the OSK scrolls the latest line
to row 14 (visible) with the keyboard at 15-17; closing it restores rows
15-17; count N prints exactly N lines.
Diffstat (limited to 'src/osk.asm')
| -rw-r--r-- | src/osk.asm | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/osk.asm b/src/osk.asm index c761aed..a34a863 100644 --- a/src/osk.asm +++ b/src/osk.asm @@ -236,6 +236,9 @@ osk_toggle:: ld [wOskVisible], a or a jr z, .hide + ; show: shrink the terminal to the rows above the keyboard, then enable window + ld a, 18 - OSK_ROWS + call term_set_rows ld a, [rLCDC] or %00100000 ld [rLCDC], a @@ -244,6 +247,8 @@ osk_toggle:: ld a, [rLCDC] and %11011111 ld [rLCDC], a + ld a, 18 ; restore full-height terminal + call term_set_rows ret ; movement with wrap-around; each moves the highlight |