Updates #22: add focus arrow key navigation to grid view

ui/util/util.go

@@ -3,6 +3,7 @@ package util
 import (
 	"fmt"
 	"image"
+	"image/color"
 	"math"
 	"strconv"
 	"strings"
@@ -24,6 +25,14 @@ import (
 
 var BoldRichTextStyle = widget.RichTextStyle{TextStyle: fyne.TextStyle{Bold: true}, Inline: true}
 
+func MakeOpaque(c color.Color) color.Color {
+	if nrgba, ok := c.(color.NRGBA); ok {
+		nrgba.A = 255
+		return nrgba
+	}
+	return c
+}
+
 func SecondsToTimeString(s float64) string {
 	if s < 0 {
 		s = 0