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fix: reduce scroll catch-up steps to limit jitter (#219)

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Reduce max_steps from 0.1s to 0.04s of catch-up time (from 5 to 2 steps
at 50 FPS). When the system lags, the previous catch-up logic allowed
jumping up to 5 pixels at once, causing visible jitter. Limiting to 2
steps provides smoother scrolling while still allowing for minor timing
corrections.

Co-authored-by: Chuck <chuck@example.com>
Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
Chuck
2026-01-29 20:03:17 -05:00
committed by GitHub
parent 7f5c7399fb
commit 68c4259370
1 changed files with 1 additions and 1 deletions
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src/common/scroll_helper.py
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@@ -240,7 +240,7 @@ class ScrollHelper:
# Move pixels (can move multiple steps if lag occurred, but cap to prevent huge jumps) # Move pixels (can move multiple steps if lag occurred, but cap to prevent huge jumps)
steps = int(time_since_last_step / self.scroll_delay) steps = int(time_since_last_step / self.scroll_delay)
# Cap at reasonable number to prevent huge jumps from lag # Cap at reasonable number to prevent huge jumps from lag
max_steps = max(1, int(0.1 / self.scroll_delay)) # Allow up to 0.1s of catch-up max_steps = max(1, int(0.04 / self.scroll_delay)) # Limit to 0.04s (2 steps at 50 FPS) for smoother scrolling
steps = min(steps, max_steps) steps = min(steps, max_steps)
pixels_to_move = self.scroll_speed * steps pixels_to_move = self.scroll_speed * steps
# Update last_step_time, preserving fractional delay for smooth timing # Update last_step_time, preserving fractional delay for smooth timing