v0.8.1: adjusted logic and added alpha settings for buttons

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/ui/ExitButton.java

@@ -30,45 +30,15 @@ import com.watabou.noosa.Image;
 import com.watabou.noosa.audio.Sample;
 import com.watabou.noosa.ui.Button;
 
-public class ExitButton extends Button {
+public class ExitButton extends IconButton {
-
-	protected Image image;
 
 	public ExitButton() {
-		super();
+		super(Icons.EXIT.get());
 
 		width = 20;
 		height = 20;
 	}
 
-	@Override
-	protected void createChildren() {
-		super.createChildren();
-
-		image = Icons.EXIT.get();
-		add( image );
-	}
-
-	@Override
-	protected void layout() {
-		super.layout();
-
-		image.x = x + (width - image.width)/2f;
-		image.y = y + (height - image.height)/2f;
-		PixelScene.align(image);
-	}
-
-	@Override
-	protected void onPointerDown() {
-		image.brightness( 1.5f );
-		Sample.INSTANCE.play( Assets.Sounds.CLICK );
-	}
-
-	@Override
-	protected void onPointerUp() {
-		image.resetColor();
-	}
-
 	@Override
 	protected void onClick() {
 		if (Game.scene() instanceof TitleScene) {

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/ui/StyledButton.java

@@ -124,6 +124,12 @@ public class StyledButton extends Button {
 		return icon;
 	}
 
+	public void alpha(float value){
+		if (icon != null) icon.alpha(value);
+		if (bg != null)   bg.alpha(value);
+		if (text != null) text.alpha(value);
+	}
+	
 	public float reqWidth() {
 		float reqWidth = 0;
 		if (icon != null){