some inventory improvements

ui/mainwindow/layer.go

@@ -97,6 +97,17 @@ func (layer Layer) PrintInside(rect types.Rect, text string, alignment int) (wid
 	return blt.PrintExt(rect.X + 2, rect.Y + 2, rect.W - 4, rect.H - 4, alignment, text)
 }
 
+func (layer Layer) PutStringInto(rect types.Rect, topOffset int, string string, alignment int) bool {
+	if len(string) > rect.W - 2 {
+		string = string[:rect.W-5]+"..."
+	}
+	if topOffset > rect.H - 2 {
+		return false
+	}
+	blt.PrintExt(rect.X + 2, rect.Y + topOffset, rect.W - 4, rect.H - 4, alignment, string)
+	return true
+}
+
 func (layer *Layer) Decorate(f func(args ...interface{})) func(args ...interface{}) {
 	return func(args ...interface{}) {
 		layer.before()