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Force tmux redraw when pyte syncs to PTY size

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Toggle PTY size after resize to trigger tmux redraw, with brief
delay to let redraw data arrive before taking screenshot
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GitHub Copilot
2026-01-24 16:45:19 +00:00
parent a6e37b87c3
commit 8285e9f910
1 changed files with 13 additions and 1 deletions
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src/textual_webterm/terminal_session.py
+13 -1
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@@ -113,11 +113,12 @@ class TerminalSession(Session):
return (buf[1], buf[0]) # cols, rows return (buf[1], buf[0]) # cols, rows
async def _sync_pyte_to_pty(self) -> None: async def _sync_pyte_to_pty(self) -> None:
"""Sync pyte screen size to actual PTY size.""" """Sync pyte screen size to actual PTY size and trigger redraw."""
if self.master_fd is None: if self.master_fd is None:
return return
loop = asyncio.get_running_loop() loop = asyncio.get_running_loop()
width, height = await loop.run_in_executor(None, self._get_terminal_size) width, height = await loop.run_in_executor(None, self._get_terminal_size)
needs_redraw = False
async with self._screen_lock: async with self._screen_lock:
if self._screen.columns != width or self._screen.lines != height: if self._screen.columns != width or self._screen.lines != height:
log.debug("Syncing pyte screen from %dx%d to %dx%d", log.debug("Syncing pyte screen from %dx%d to %dx%d",
@@ -125,6 +126,17 @@ class TerminalSession(Session):
self._screen.resize(height, width) self._screen.resize(height, width)
self._last_width = width self._last_width = width
self._last_height = height self._last_height = height
needs_redraw = True
# Toggle PTY size outside lock to force tmux to redraw
if needs_redraw:
await loop.run_in_executor(
None, self._set_terminal_size, width - 1, height
)
await loop.run_in_executor(
None, self._set_terminal_size, width, height
)
# Brief delay to let redraw data arrive
await asyncio.sleep(0.1)
async def set_terminal_size(self, width: int, height: int) -> None: async def set_terminal_size(self, width: int, height: int) -> None:
# Track the size for reconnection # Track the size for reconnection