beginning of moving custom icons to theme

ui/theme/theme.go

@@ -6,6 +6,7 @@ import (
 	"io/ioutil"
 	"log"
 	"strings"
+	"supersonic/res"
 
 	"fyne.io/fyne/v2"
 	"fyne.io/fyne/v2/theme"
@@ -23,6 +24,17 @@ type MyTheme struct {
 	BoldFont   string
 }
 
+const (
+	IconNameNowPlaying  fyne.ThemeIconName = "NowPlaying"
+	IconNameFavorite    fyne.ThemeIconName = "Favorite"
+	IconNameNotFavorite fyne.ThemeIconName = "NotFavorite"
+	IconNameAlbum       fyne.ThemeIconName = "Album"
+	IconNameArtist      fyne.ThemeIconName = "Artist"
+	IconNameGenre       fyne.ThemeIconName = "Genre"
+	IconNamePlaylist    fyne.ThemeIconName = "Playlist"
+	IconNameShuffle     fyne.ThemeIconName = "Shuffle"
+)
+
 var _ fyne.Theme = (*MyTheme)(nil)
 
 func (m *MyTheme) Color(name fyne.ThemeColorName, variant fyne.ThemeVariant) color.Color {
@@ -42,7 +54,26 @@ func (m *MyTheme) Color(name fyne.ThemeColorName, variant fyne.ThemeVariant) col
 }
 
 func (m *MyTheme) Icon(name fyne.ThemeIconName) fyne.Resource {
-	return theme.DefaultTheme().Icon(name)
+	switch name {
+	case IconNameAlbum:
+		return res.ResDiscInvertPng
+	case IconNameArtist:
+		return res.ResPeopleInvertPng
+	case IconNameFavorite:
+		return res.ResHeartFilledInvertPng
+	case IconNameNotFavorite:
+		return res.ResHeartOutlineInvertPng
+	case IconNameGenre:
+		return res.ResTheatermasksInvertPng
+	case IconNameNowPlaying:
+		return res.ResHeadphonesInvertPng
+	case IconNamePlaylist:
+		return res.ResPlaylistInvertPng
+	case IconNameShuffle:
+		return res.ResShuffleInvertSvg
+	default:
+		return theme.DefaultTheme().Icon(name)
+	}
 }
 
 func (m *MyTheme) Font(style fyne.TextStyle) fyne.Resource {