pantograph.git/src/tui_engine.zig, branch mainUnnamed repository; edit this file 'description' to name the repository.
https://code.tjp.lol/pantograph.git/atom?h=main2026-07-06T19:06:23Zrendering & chat fixes for panto cli2026-07-06T19:06:23Ztt@tjp.lol2026-07-06T14:34:35Zurn:sha1:983e523ca9f8e6a7db56b4aca23a962be95e7051
- resiliency for tool ids that come back from some openai_chat providers
- fixing codepoint width recognition
- implement proper rendering for full markdown as seen from ai models
Fix tool override swaps to stay differential2026-07-01T15:49:33Ztt@tjp.lol2026-06-23T17:20:45Zurn:sha1:5e76e4aa90e70245404c10085e809880635572a0
Treat 1:1 component swaps and pure insertions as differential TUI updates
instead of structural changes that force full redraws. Keep full redraws
for net removals and edits above the viewport, and add tests covering the
streaming-tool flicker regression and scrollback behavior.
Also remove the unfinished Go ToolSource batch-registration bridge.
tool collapsed state, and fixing dirty component flags2026-06-16T17:58:44Ztt@tjp.lol2026-06-16T17:49:54Zurn:sha1:28cb3eacfcf1217b4d014dd864005deb2d7f0585fix: eliminate scrollback-clearing flash when streaming with expanded tool output2026-06-10T21:28:16Ztt@tjp.lol2026-06-10T20:57:31Zurn:sha1:cee08918509689adbdbd26b6384d5ef3a47e91a2
The root cause was a two-part bug:
1. Engine slot management (tui_engine.zig): The app rebuilds its full
component list on every new transcript entry. The old approach drained
every slot then re-added them all, resetting every component's render
baseline. When earlier content had scrolled into native scrollback
(viewport_top > 0), the engine's viewport-escape rule escalated any
cut above the viewport top to a scrollback-clearing full redraw — the
visible flash on every streamed block while a tool call was expanded.
Fix: replace drain+rebuild with syncComponents(), which reconciles the
live slot list in place by finding the longest common prefix and suffix
(matched by component pointer). Prefix and suffix slots keep their
baselines verbatim; only the changed region in the middle gets new
empty slots. A pure insertion (the dominant case: a new transcript
entry appended just before the pinned input+footer suffix) stays on
the differential path with no clear. A structural change (slot
replaced or removed) sets force_full for correctness.
2. RenderCache dirty signal (tui_component.zig): firstLineChanged()
was returning the retained changed_from diff index even when the cache
was clean. A first-paint store records changed_from == 0, so a clean
but previously-rendered component was pegging the differential cut to
line 0 on every subsequent frame, making unchanged slots above the
insertion point drag the cut all the way up. Fix: when the cache is
clean, firstLineChanged() returns null unconditionally. The recorded
changed_from is now internal render bookkeeping only, not a live
signal.
Additional changes:
- ToolUse.collapsed_tail_lines raised from 5 to 8 lines.
- ToolUse collapsed-view test updated to use 12 output lines and
collapsed_tail_lines symbolically so the numbers self-document.
- tui_app.zig: override-slot test comment and assertion clarified to
reflect that the override owns the slot pointer (not just renders it),
and the SWAPPED-AT-DETAILS render check replaced with a pointer-equality
check.
- lua_event_bridge.zig: minor related fixes.
- New tests: syncComponents middle-insertion no-clear, syncComponents
structural removal forces full, syncComponents override swap; streaming
expanded-tools no-clear regression test in tui_app.
fix streaming rendering2026-06-09T18:03:35Ztt@tjp.lol2026-06-09T18:01:31Zurn:sha1:af5119901997774ef7d04b1940194ce54a5b35a4finalize cursor on quit2026-06-09T16:13:39Ztt@tjp.lol2026-06-09T16:13:26Zurn:sha1:3d535f8360f35132faaeef093d61cf377be5e9ccevent lifecycle2026-06-09T14:52:47Ztt@tjp.lol2026-06-09T06:00:56Zurn:sha1:97b10466d83d488ad2cb9e084159a445af74c845keybinding fixes2026-06-09T01:56:47Ztt@tjp.lol2026-06-08T20:48:33Zurn:sha1:104001d25c9c8cb5ec45ced1678f7c7b70888808Replace print CLIRenderer with differential TUI engine2026-06-08T18:25:55Ztt@tjp.lol2026-06-08T16:41:30Zurn:sha1:e5ed00c52bb10aec811734c5568c881c41e58474
Implement TUI Phase 1: a raw-mode terminal, differential render engine,
pinned input box + footer, and component model wired into the libpanto
event stream. Adds foundation modules (theme, key, component, input,
terminal), the render engine, components, and the app loop; removes the
old print CLIRenderer and driveTurn REPL from main.zig.
Also removes scratch status reports (tui-p1/, progress.md) for the now
completed work.