--- a/src/main/java/com/glavsoft/rfb/protocol/NullRenderer.java	Wed Feb 05 16:37:02 2020 +0900
+++ b/src/main/java/com/glavsoft/rfb/protocol/NullRenderer.java	Wed Feb 05 17:10:19 2020 +0900
@@ -3,6 +3,7 @@
 import com.glavsoft.drawing.ColorDecoder;
 import com.glavsoft.drawing.Renderer;
 import com.glavsoft.exceptions.TransportException;
+import com.glavsoft.rfb.encoding.PixelFormat;
 import com.glavsoft.rfb.encoding.decoder.FramebufferUpdateRectangle;
 import com.glavsoft.transport.Reader;
 
@@ -10,138 +11,13 @@
 
 	private int bytePerPixcel;
 
-	NullRenderer(int bytePerPixcel) {
-		this.bytePerPixcel = bytePerPixcel;
-	}
-
-	@Override
-	public void drawJpegImage(byte[] bytes, int offset, int jpegBufferLength,
-			FramebufferUpdateRectangle rect) {
-		// TODO Auto-generated method stub
-
-	}
-
-	@Override
-	public void copyRect(int srcX, int srcY, FramebufferUpdateRectangle rect) {
-		// TODO Auto-generated method stub
-		
-	}
-
-	@Override
-	public int readPixelColor(Reader reader) throws TransportException {
-		// TODO Auto-generated method stub
-		return 0;
-	}
-
-	@Override
-	public void fillRect(int i, int tileX, int tileY, int tileWidth,
-			int tileHeight) {
-		// TODO Auto-generated method stub
-		
-	}
-
-	@Override
-	public int getBytesPerPixel() {
-		return bytePerPixcel;
-	}
-
-	@Override
-	public int getBytesPerCPixel() {
-		return bytePerPixcel;
-	}
-
-	@Override
-	public void drawBytes(byte[] bytes, int x, int y, int width, int height) {
-		// TODO Auto-generated method stub
-		
-	}
-
-	@Override
-	public int getPixelColor(byte[] buffer, int i) {
-		// TODO Auto-generated method stub
-		return 0;
-	}
-
-	@Override
-	public void createCursor(int[] cursorPixels, FramebufferUpdateRectangle rect) {
-		// TODO Auto-generated method stub
-		
-	}
-
-	@Override
-	public void fillRect(int color, FramebufferUpdateRectangle rect) {
-		// TODO Auto-generated method stub
-		
+	public NullRenderer(int i, int width, int height, PixelFormat pixelFormat) {
+		super();
+		init(null, width, height, pixelFormat);
 	}
 
 	@Override
-	public int getBytesPerPixelSignificant() {
-		// TODO Auto-generated method stub
-		return 0;
-	}
-
-	@Override
-	public int readTightPixelColor(Reader reader) {
-		// TODO Auto-generated method stub
-		return 0;
-	}
-
-	@Override
-	public int drawTightBytes(byte[] buffer, int i, int x, int y, int width,
-			int height) {
-		return 0;
-	}
+	public void drawJpegImage(byte[] bytes, int offset, int jpegBufferLength, FramebufferUpdateRectangle rect) {
 
-	@Override
-	public void drawBytesWithPalette(byte[] buffer,
-			FramebufferUpdateRectangle rect, int[] palette) {
-		// TODO Auto-generated method stub
-		
-	}
-
-	@Override
-	public ColorDecoder getColorDecoder() {
-		// TODO Auto-generated method stub
-		return null;
-	}
-
-	@Override
-	public void drawUncaliberedRGBLine(byte[] thisRow, int x, int i, int width) {
-		// TODO Auto-generated method stub
-		
 	}
-
-	@Override
-	public int getCompactPixelColor(byte[] bytes, int index) {
-		// TODO Auto-generated method stub
-		return 0;
-	}
-
-	@Override
-	public void fillColorBitmapWithColor(int[] decodedBitmap,
-			int decodedOffset, int rlength, int color) {
-		// TODO Auto-generated method stub
-		
-	}
-
-	@Override
-	public void drawColoredBitmap(int[] decodedBitmap, int tileX, int tileY,
-			int tileWidth, int tileHeight) {
-		// TODO Auto-generated method stub
-		
-	}
-
-	@Override
-	public int drawCompactBytes(byte[] bytes, int offset, int tileX, int tileY,
-			int tileWidth, int tileHeight) {
-		// TODO Auto-generated method stub
-		return 0;
-	}
-
-	@Override
-	public void decodeCursorPosition(FramebufferUpdateRectangle rect) {
-		// TODO Auto-generated method stub
-		
-	}
-
 }