Subj : src/syncterm/term.c
To   : Git commit to main/sbbs/master
From : Deucе
Date : Mon Jul 13 2026 14:04:41

https://gitlab.synchro.net/main/sbbs/-/commit/bc7374d01c25c85883f9f521
Modified Files:
	src/syncterm/term.c
Log Message:
Fix SGR pixel mouse coordinate origin

DECSET 1016 reports one-based pixel coordinates, but the conversion
from ciolib's zero-based high-resolution mouse position subtracted the
one-based cterm origin directly. This removed one full character cell
from each axis and could report zero or negative coordinates near the
top or left edge.

Use the zero-based pixel origin implied by the one-based cterm cell
origin instead, and treat high-resolution coordinates as present only
when both axes are non-negative. This keeps valid zero-valued pixels
from being mistaken for missing data while preserving the text-coordinate
fallback for backends that do not provide pixel positions.

Fixes SourceForge ticket 267.

Co-Authored-By: OpenAI Codex <noreply@openai.com>

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