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JVM Image Library

There is a newer version: 4.2.0

package com.sksamuel.scrimage.canvas;

import com.sksamuel.scrimage.ImmutableImage;
import com.sksamuel.scrimage.graphics.RichGraphics2D;

import java.awt.*;
import java.util.Arrays;
import java.util.Collection;

/**
 * A Canvas extends an ImmutableImage with functionality for drawing.
 * It is essentially some sugar around using the Graphics2D functionality in AWT.
 */
public class Canvas {

   private final ImmutableImage image;

   public Canvas(ImmutableImage image) {
      this.image = image;
   }

   /**
    * Returns the image that backs this canvas.
    */
   public ImmutableImage getImage() {
      return image;
   }

   private Graphics2D g2(ImmutableImage image) {
      return (Graphics2D) image.awt().getGraphics();
   }

   public void drawInPlace(Drawable... drawables) {
      drawInPlace(Arrays.asList(drawables));
   }

   public void drawInPlace(Collection drawables) {
      Graphics2D g = g2(image);
      drawables.forEach(d -> {
         RichGraphics2D rich2d = new RichGraphics2D(g);
         d.context().configure(rich2d);
         d.draw(rich2d);
      });
      g.dispose();
   }

   public Canvas draw(Drawable... drawables) {
      return draw(Arrays.asList(drawables));
   }

   public Canvas draw(Collection drawables) {
      ImmutableImage target = image.copy();
      Graphics2D g = g2(target);
      drawables.forEach(d -> {
         RichGraphics2D rich2d = new RichGraphics2D(g);
         d.context().configure(rich2d);
         d.draw(rich2d);
      });
      g.dispose();
      return new Canvas(target);
   }
}