[WIP] Proportional font: character width

thjbdvlt · thjbdvlt · commit 4ca7f0590e3a · 2025-07-10T21:01:30.000+02:00
See akiyosi#591 (comment)
diff --git a/editor/window.go b/editor/window.go
@@ -3015,7 +3015,8 @@ func (w *Window) newTextCache(text string, hlkey HlKey, isNormalWidth bool) *gui
 
 	width := float64(len(text))*font.cellwidth + 1
 	if fontfallbacked.proportional {
-		fmWidth := fontfallbacked.fontMetrics.HorizontalAdvance(text, -1)
+		fm := getFontMetrics(fontfallbacked, &Highlight{bold: hlkey.bold, italic: hlkey.italic})
+		fmWidth := fm.HorizontalAdvance(text, -1)
 		if fmWidth > width {
 			width = fmWidth
 		}

Original file line number	Diff line number	Diff line change
`@@ -3015,7 +3015,8 @@ func (w Window) newTextCache(text string, hlkey HlKey, isNormalWidth bool) gui`
`3015`	`3015`
`3016`	`3016`	`width := float64(len(text))*font.cellwidth + 1`
`3017`	`3017`	`if fontfallbacked.proportional {`
`3018`		`- fmWidth := fontfallbacked.fontMetrics.HorizontalAdvance(text, -1)`
	`3018`	`+ fm := getFontMetrics(fontfallbacked, &Highlight{bold: hlkey.bold, italic: hlkey.italic})`
	`3019`	`+ fmWidth := fm.HorizontalAdvance(text, -1)`
`3019`	`3020`	`if fmWidth > width {`
`3020`	`3021`	`width = fmWidth`
`3021`	`3022`	`}`