forked from 1b-agent/opencadstudio-upstream
Rewrite the in-app MTEXT editor to run on acadrust's structured MTextDocument model end-to-end: load via parse_mtext, edit a flat Cell model, serialize via to_mtext_string. Retires the hand-rolled format-code string handling, the parallel visible_spans parser, the composed_value prefix, and the Edit-raw-code tab. Selection and copy: - double-click selects the word, triple-click selects all (click-counting) - Ctrl+A selects all text - Ctrl+C copies the selected text to the clipboard Formatting: - per-selection Bold/Italic/Underline/Overline/Strike/Case/Alignment - Bold renders as a visibly thicker SDF pen, keyed (family, char, bold) through the whole text pipeline; the resolved style font name is stamped so the \f...|b1; code survives serialization - per-selection font and color changes - editor color dropdown reuses the Properties panel color selector Global toolbar defaults (font/color/oblique/width/tracking) fold onto the document as real span properties instead of a leading code prefix; a trailing empty paragraph is preserved so Enter at the end keeps its line. Co-Authored-By: Claude Opus 4.8 <[email protected]>