added detailed display on screen (untested)

core/src/zero1hd/rhythmbullet/graphics/ui/components/MusicSelectable.java

@@ -10,6 +10,7 @@ import com.badlogic.gdx.scenes.scene2d.ui.Image;
 import com.badlogic.gdx.scenes.scene2d.ui.Label;
 import com.badlogic.gdx.scenes.scene2d.ui.Skin;
 import com.badlogic.gdx.scenes.scene2d.ui.Table;
+import com.badlogic.gdx.scenes.scene2d.utils.Drawable;
 import com.badlogic.gdx.scenes.scene2d.utils.TextureRegionDrawable;
 import com.badlogic.gdx.utils.Array;
 
@@ -89,8 +90,12 @@ public class MusicSelectable extends Button {
 
 	public void loadAlbumCover() {
 		metadata.loadAlbumCover();
+		Texture texture = defaultAlbumArt;
+		if (metadata.getAlbumCover() != null) {
+			texture = metadata.getAlbumCover();
+		}
 		synchronized (album) {
-			album.setDrawable(new TextureRegionDrawable(new TextureRegion(metadata.getAlbumCover())));
+			album.setDrawable(new TextureRegionDrawable(new TextureRegion(texture)));
 		}
 	}
 

desktop/src/zero1hd/rhythmbullet/desktop/screens/main/MusicSelectionPage.java

@@ -10,6 +10,7 @@ import com.badlogic.gdx.assets.AssetManager;
 import com.badlogic.gdx.files.FileHandle;
 import com.badlogic.gdx.graphics.Color;
 import com.badlogic.gdx.graphics.Texture;
+import com.badlogic.gdx.graphics.g2d.TextureRegion;
 import com.badlogic.gdx.math.Vector3;
 import com.badlogic.gdx.scenes.scene2d.InputEvent;
 import com.badlogic.gdx.scenes.scene2d.InputListener;
@@ -21,6 +22,8 @@ import com.badlogic.gdx.scenes.scene2d.ui.Stack;
 import com.badlogic.gdx.scenes.scene2d.ui.Table;
 import com.badlogic.gdx.scenes.scene2d.ui.TextButton;
 import com.badlogic.gdx.scenes.scene2d.utils.ChangeListener;
+import com.badlogic.gdx.scenes.scene2d.utils.ClickListener;
+import com.badlogic.gdx.scenes.scene2d.utils.TextureRegionDrawable;
 import com.badlogic.gdx.utils.Array;
 
 import zero1hd.rhythmbullet.audio.MusicMetadataController;
@@ -38,9 +41,9 @@ public class MusicSelectionPage extends Page implements Observer {
 	private MusicSelectableButtonGroup selectables;
 	private Stack stackSelectables;
 	private TextButton back;
-	private Table musicTable;
 	private ScrollPane musicTableScrollPane;
 	
+	private ClickListener selectionListener;
 	private musicSelectionLoaderThread thread;
 	
 	private Table musicInfoTable;
@@ -71,9 +74,7 @@ public class MusicSelectionPage extends Page implements Observer {
 		selectables = new MusicSelectableButtonGroup();
 		musicFileAnnotation = Gdx.app.getPreferences("music_file_annotation");
 		
-		musicTable = new Table();
+		musicTableScrollPane = new ScrollPane(stackSelectables, skin);
-		musicTableScrollPane = new ScrollPane(musicTable, skin);
-		musicTable.defaults().spaceTop(5f).spaceBottom(5f);
 		musicTableScrollPane.setSize(0.45f*getWidth(), getHeight());
 		musicTableScrollPane.setFadeScrollBars(false);
 		musicTableScrollPane.setOverscroll(false, false);
@@ -133,6 +134,31 @@ public class MusicSelectionPage extends Page implements Observer {
 		mmc.addObserver(this);
 		
 		thread = new musicSelectionLoaderThread();
+		
+		selectionListener  = new ClickListener() {
+			public void clicked(InputEvent event, float x, float y) {
+				MusicSelectable selectable = (MusicSelectable) event.getListenerActor();
+				if (selectable.getMetadata().getTitle() != null) {
+					songTitle.setText(selectable.getMetadata().getTitle(), null);
+				} else {
+					songTitle.setText(selectable.getFileHandle().nameWithoutExtension(), null);
+				}
+				
+				author.setText(selectable.getMetadata().getAuthor());
+				
+				songLength.setText(selectable.getMetadata().getDuration());
+				
+				previousTop.setText("...");
+				
+				ratedDifficulty.setText("...");
+				
+				if (selectable.getMetadata().getAlbumCover() != null) {
+					albumCover.setDrawable(new TextureRegionDrawable(new TextureRegion(selectable.getMetadata().getAlbumCover())));
+				} else {
+					albumCover.setDrawable(new TextureRegionDrawable(new TextureRegion(assets.get("defaultCover.png", Texture.class))));
+				}
+			}
+		};
 	}
 	
 	@Override
@@ -206,7 +232,6 @@ public class MusicSelectionPage extends Page implements Observer {
 		selectables.clear();
 		
 		mmc.loadAudioMetadata();
-		musicTable.clear();
 		selectables.clear();
 		musicInfoTable.clear();
 		musicSubInfo.clear();
@@ -216,16 +241,21 @@ public class MusicSelectionPage extends Page implements Observer {
 		songTitle.setText("loading...", null);
 		musicInfoTable.add(songTitle).width(musicInfoTable.getWidth()*0.6f).spaceBottom(30f);
 		musicInfoTable.row();
+		author.setText("...");
 		musicSubInfo.add(author);
 		musicSubInfo.row();
+		songLength.setText("...");
 		musicSubInfo.add(songLength);
 		musicSubInfo.row();
+		previousTop.setText("...");
 		musicSubInfo.add(previousTop);
 		musicSubInfo.row();
+		ratedDifficulty.setText("...");
 		musicSubInfo.add(ratedDifficulty);
 		musicSubInfo.pack();
 		musicInfoTable.add(musicSubInfo).spaceBottom(20f);
 		musicInfoTable.row();
+		albumCover.setDrawable(new TextureRegionDrawable(new TextureRegion(assets.get("defaultCover.png", Texture.class))));
 		musicInfoTable.add(albumCover).size(musicInfoTable.getWidth()/2f);
 		musicInfoTable.row();
 		musicInfoTable.add(beginButton).spaceTop(20f).fillX();
@@ -268,6 +298,7 @@ public class MusicSelectionPage extends Page implements Observer {
 			while (work) {
 				while (selectables.getButtons().size != mc.getMusicList().getTotal()) {
 					MusicSelectable selectable = new MusicSelectable(skin, assets.get("defaultCover.png"), mmc.getMetadata(selectables.getButtons().size), queueList);
+					selectable.addListener(selectionListener);
 					selectables.add(selectable);
 				}