limit size of command window preview

1 files changed, 29 insertions, 1 deletions

diff --git a/tui/layout.go b/tui/layout.go
index f195048..4caa3a6 100644
--- a/tui/layout.go
+++ b/tui/layout.go
@@ -8,18 +8,21 @@ import (
 type Box struct {
 	id string
 	Width, Height BoxSize
+	MaxWidth, MaxHeight BoxSize
 	Dir Direction
 	Overflow bool
 	Style *Style
 	Margins [4]int
 	Scroll *ScrollState
 	NoWrap bool
+	IsOverflow *bool
 	text []textRun
 	computedLines [][]textRun
 	children []*Box
 	computedPosition int
 	computedSize [2]int
 	computedRect rect
+	isOverflow bool
 }
 
 type BoxSize int
@@ -97,6 +100,10 @@ func Push(id string, box Box) {
 			box.computedSize[axis] = int(value)
 		}
 	}
+	b := layout.back[id]
+	if box.IsOverflow != nil {
+		*box.IsOverflow = b != nil && b.isOverflow
+	}
 }
 
 func Text(text string, style *Style) {
@@ -117,14 +124,22 @@ func (b Box) axes() [2]BoxSize {
 	return [2]BoxSize {b.Width, b.Height}
 }
 
+func (b Box) maxAxes() [2]BoxSize {
+	return [2]BoxSize {b.MaxWidth, b.MaxHeight}
+}
+
 func (b *Box) marginsSize(axis int) int {
 	return b.Margins[axis * 2] + b.Margins[axis * 2 + 1]
 }
 
 func (b *Box) computeFillSizes(axis int) {
 	for _, c := range b.children {
+		size := b.computedSize[axis]
 		if c.axes()[axis] == Fill {
-			c.computedSize[axis] = b.computedSize[axis]
+			c.computedSize[axis] = size
+		}
+		if c.maxAxes()[axis] == Fill {
+			c.computedSize[axis] = min(c.computedSize[axis], size)
 		}
 		c.computeFillSizes(axis)
 	}
@@ -143,11 +158,24 @@ func (b *Box) computeChildrenSizes(axis int) {
 	if b.axes()[axis] == Children {
 		b.computedSize[axis] = size
 	}
+	if b.maxAxes()[axis] == Children {
+		b.computedSize[axis] = min(b.computedSize[axis], size)
+	}
+	if b.maxAxes()[axis] > 0 {
+		b.computedSize[axis] = min(
+			b.computedSize[axis], int(b.maxAxes()[axis]) + b.marginsSize(axis),
+		)
+	}
 }
 
 func (b *Box) solve(axis int) {
 	switch {
 	case b.Dir.axis() == axis && b.Overflow:
+		size := b.marginsSize(axis)
+		for _, c := range b.children {
+			size += c.computedSize[axis]
+		}
+		b.isOverflow = size > b.computedSize[axis]
 		break
 	case b.Dir.axis() == axis:
 		size := b.marginsSize(axis)