initial public release

internal/tui/layout.go

@@ -0,0 +1,84 @@
+package tui
+
+import "github.com/charmbracelet/bubbles/table"
+
+const (
+	sidebarWidth = 18
+	footerHeight = 1
+	titleHeight  = 2
+	boxChromeV   = 2
+	boxChromeH   = 4
+)
+
+// flexColumns grows the columns at flexIdx to fill totalW, distributing extra
+// space proportionally to each flex column's existing width. Bubble-tea's
+// table widget reserves padding around every cell, accounted for via colPadding.
+func flexColumns(totalW int, cols []table.Column, flexIdx []int) []table.Column {
+	out := make([]table.Column, len(cols))
+	copy(out, cols)
+	if totalW <= 0 || len(flexIdx) == 0 {
+		return out
+	}
+	const colPadding = 2
+	used := 0
+	for _, c := range out {
+		used += c.Width + colPadding
+	}
+	extra := totalW - used
+	if extra <= 0 {
+		return out
+	}
+	totalFlex := 0
+	for _, i := range flexIdx {
+		if i < 0 || i >= len(out) {
+			return out
+		}
+		totalFlex += out[i].Width
+	}
+	if totalFlex == 0 {
+		return out
+	}
+	distributed := 0
+	for j, i := range flexIdx {
+		var add int
+		if j == len(flexIdx)-1 {
+			add = extra - distributed
+		} else {
+			add = extra * out[i].Width / totalFlex
+		}
+		out[i].Width += add
+		distributed += add
+	}
+	return out
+}
+
+type layoutDims struct {
+	termW, termH   int
+	contentW       int
+	contentH       int
+	sidebarH       int
+}
+
+func computeLayout(termW, termH int) layoutDims {
+	if termW < 60 {
+		termW = 60
+	}
+	if termH < 18 {
+		termH = 18
+	}
+	contentW := termW - sidebarWidth - boxChromeH - 1
+	if contentW < 40 {
+		contentW = 40
+	}
+	contentH := termH - titleHeight - footerHeight - boxChromeV
+	if contentH < 10 {
+		contentH = 10
+	}
+	return layoutDims{
+		termW:    termW,
+		termH:    termH,
+		contentW: contentW,
+		contentH: contentH,
+		sidebarH: contentH,
+	}
+}