Add support for widgets that trade height for width to layouts and do some refactoring

1 files changed, 17 insertions, 0 deletions

diff --git a/groupbox.go b/groupbox.go
index 600dd11a..4135e0fe 100644
--- a/groupbox.go
+++ b/groupbox.go
@@ -140,6 +140,23 @@ func (gb *GroupBox) SizeHint() Size {
 	return gb.MinSizeHint()
 }
 
+func (gb *GroupBox) HeightForWidth(width int) int {
+	if gb.composite == nil || gb.composite.layout == nil {
+		return 100
+	}
+
+	cmsh := gb.composite.layout.MinSizeForSize(Size{Width: width})
+
+	if gb.Checkable() {
+		s := gb.checkBox.SizeHint()
+
+		cmsh.Width = maxi(cmsh.Width, s.Width)
+		cmsh.Height += s.Height
+	}
+
+	return cmsh.Height + 14
+}
+
 func (gb *GroupBox) ClientBounds() Rectangle {
 	cb := windowClientBounds(gb.hWndGroupBox)