image path helper functions

konstructor/layout.render.go

@@ -8,13 +8,18 @@ import (
 )
 
 type Render struct {
-	Image   string
-	Width   int
-	Height  int
-	Visible bool
+	Image       string
+	Width       int
+	Height      int
+	Visible     bool
+	cachedImage image.Image
 }
 
 func (ro *Render) GetImage() image.Image {
+	if ro.cachedImage != nil {
+		return ro.cachedImage
+	}
+
 	file, err := ioutil.ReadFile(ro.Image)
 	if err != nil {
 		log.Fatal(err)
@@ -24,5 +29,6 @@ func (ro *Render) GetImage() image.Image {
 	if err != nil {
 		log.Fatal(err)
 	}
+	ro.cachedImage = img
 	return img
 }