directrastergraphics.java

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/* Copyright (C) 2000, 2003  Free Software Foundation

   This file is part of libgcj.

This software is copyrighted work licensed under the terms of the
Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
details.  */

package gnu.awt.j2d;

import java.awt.Color;
import java.awt.Image;
import java.awt.Shape;
import java.awt.Rectangle;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GraphicsConfiguration;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.image.Raster;
import java.awt.image.ImageObserver;

/**
 * Interface for a simple pixel based backend graphics object that
 * does not handle translation/transforms, curves, nor advanced
 * compositing.
 */
public interface DirectRasterGraphics extends Cloneable
{
  public void dispose();
  
  public void setColor(Color color);
  
  public void setPaintMode();
  
  public void setXORMode(Color altColor);
  
  public void setFont(Font font);
  
  public FontMetrics getFontMetrics(Font font);
  
  // supports rects, multi-rects and polygons
  public void setClip(Shape clip);
  
  public void copyArea(int x, int y, int width, int height,
		       int dx, int dy);
  
  public void drawLine(int x1, int y1, int x2, int y2);
  
  public void drawRect(int x, int y, int width, int height);
  
  public void fillRect(int x, int y, int width, int height);
  
  public void drawArc(int x, int y, int width, int height,
		      int startAngle, int arcAngle);
  
  public void fillArc(int x, int y, int width, int height,
		      int startAngle, int arcAngle);
  
  public void drawPolyline(int[] xPoints, int[] yPoints, int nPoints);
  
  public void drawPolygon(int[] xPoints, int[] yPoints, int nPoints);
  
  public void fillPolygon(int[] xPoints, int[] yPoints, int nPoints,
			  int translateX, int translateY);
  
  public void drawString(String str, int x, int y);
  
  public boolean drawImage(Image image, int x, int y,
			   ImageObserver observer);

  /**
   * Map the data for screen pixels in the requested bounds to a
   * raster object.  This gives read/write access to the screen
   * pixels, allowing neat alpha and composite tricks.
   */
  public MappedRaster mapRaster(Rectangle bounds);
  
  /**
   * Detach previously mapped pixel data from a raster object.
   */
  public void unmapRaster(MappedRaster mappedRaster);
  
  public Object clone();
}