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tsvm new api: con.setFullscreen

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minjaesong
2026-06-20 00:13:55 +09:00
parent eb481b2888
commit 8a046776ad
9 changed files with 195 additions and 46 deletions
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57
assets/disk0/tvdos/VTMGR.SYS
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@@ -396,10 +396,11 @@ function queuePop() {
return b
}
con.getch = function() {
// Reading cooked input means we are NOT a raw-keyboard grabber; drop any
// stale grab this VT left set (e.g. a fullscreen app that crashed without
// releasing) so the dispatcher resumes feeding our ring.
if (sys.peek(RAW_GRAB_ADDR) === VT_NUM) sys.poke(RAW_GRAB_ADDR, 0)
// Reading cooked input means we are NOT a fullscreen raw-keyboard owner;
// drop any stale grab this VT left set (e.g. a fullscreen app that crashed
// without calling setFullscreen(false)) so the dispatcher resumes feeding
// our ring.
if (sys.peek(RAW_GRAB_ADDR) === VT_NUM) { sys.poke(RAW_GRAB_ADDR, 0); con._fullscreen = false }
while (true) {
if (sys.peek(ACTIVE_VT_ADDR) === VT_NUM) {
let k = queuePop()
@@ -408,22 +409,46 @@ con.getch = function() {
sys.sleep(20)
}
}
// A fullscreen app that reads the raw keyboard snapshot (-41..-48) directly,
// bypassing this ring, must grab so the dispatcher stops piling cooked chars
// into a ring it never drains. Flush any prior type-ahead on grab; the
// dispatcher keeps the ring empty while held. Release on exit (or the next
// con.getch self-heals a grab leaked by a crashed app).
con.grabRawKeyboard = function() {
sys.poke(RAW_GRAB_ADDR, VT_NUM)
sys.poke(QUEUE_HEAD_ADDR, sys.peek(QUEUE_TAIL_ADDR))
}
con.releaseRawKeyboard = function() {
if (sys.peek(RAW_GRAB_ADDR) === VT_NUM) sys.poke(RAW_GRAB_ADDR, 0)
// ── Fullscreen / raw-keyboard session (VT-aware overrides) ─────────────────
// con.setFullscreen(true) declares this pane a fullscreen raw-keyboard owner:
// a fullscreen app reads the raw key snapshot (-41..-48) directly, bypassing
// this ring, so it grabs to stop the dispatcher piling cooked chars into a ring
// it never drains (they'd flood the shell the instant the app exits). Flush any
// prior type-ahead on grab; the dispatcher keeps the ring empty while held.
// setFullscreen(false) releases (a leaked grab also self-heals on the next
// con.getch). These override JS_INIT's bare-metal no-ops so an app's single
// con.setFullscreen(true) call does the right thing under vtmgr too.
con.setFullscreen = function(on) {
con._fullscreen = !!on
if (on) {
// Claim the grab only while we are the foreground VT. Apps may re-assert
// this every frame (e.g. taut/zfm, to re-establish it after launching a
// sub-program); a BACKGROUNDED fullscreen app must not clobber the active
// grabber's claim on the shared CTRL_RAW_GRAB_VT byte. The claim persists
// across a switch-away (nobody else clears it) and the app re-claims on
// return, so a single up-front claim also survives backgrounding.
if (sys.peek(ACTIVE_VT_ADDR) === VT_NUM) {
sys.poke(RAW_GRAB_ADDR, VT_NUM)
sys.poke(QUEUE_HEAD_ADDR, sys.peek(QUEUE_TAIL_ADDR))
}
} else if (sys.peek(RAW_GRAB_ADDR) === VT_NUM) {
sys.poke(RAW_GRAB_ADDR, 0)
}
}
con.isFullscreen = function() { return con._fullscreen }
// This pane owns the physical keyboard only while it is the foreground VT.
// con.poll_keys() (inherited from JS_INIT) and direct-MMIO raw-input apps gate
// their key/mouse reads on this, so a backgrounded app reads nothing.
con.isActiveConsole = function() { return sys.peek(ACTIVE_VT_ADDR) === VT_NUM }
// Deprecated aliases kept for older raw-keyboard apps; prefer setFullscreen().
con.grabRawKeyboard = function() { con.setFullscreen(true) }
con.releaseRawKeyboard = function() { con.setFullscreen(false) }
con.hitterminate = function() { return false }
con.hiteof = function() { return false }
con.resetkeybuf = function() { sys.poke(QUEUE_HEAD_ADDR, sys.peek(QUEUE_TAIL_ADDR)) }
con.poll_keys = function() { return [0,0,0,0,0,0,0,0] }
// poll_keys is inherited from JS_INIT: it returns zeros unless isActiveConsole()
// (overridden above), so a backgrounded pane reads no keys while a foreground
// pane reads the physical snapshot — no pane-specific override needed.
// ── TVDOS.SYS init flags + BIOS stub ───────────────────────────────────────
globalThis._TVDOS_IS_VT_PANE = true