package imagetest;

import com.sun.javafx.iio.ImageFrame;
import com.sun.javafx.iio.ImageStorage;
import com.sun.prism.GraphicsPipeline;
import com.sun.prism.ImageFormatTool;
import com.sun.prism.Texture;
import com.sun.prism.j2d.J2DTexture;
import java.awt.Canvas;
import java.awt.Dimension;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import javafx.application.Application;
import javafx.stage.Stage;

public class BmpLoadTest extends Application {

    public static void main(String[] args) {
        launch(args);
    }

    @Override
    public void start(Stage stage) throws IOException {
        //InputStream is = new TestInputStream(new FileInputStream("cross.png"));
        //InputStream is = new FileInputStream("cross.bmp");
        InputStream is = new TestInputStream(new FileInputStream("cross.bmp"));
        ImageFrame[] frames = ImageStorage.loadAll(is, null, 0, 0, true, false);
        com.sun.prism.Image prismImage =
                ImageFormatTool.convertImageFrame(frames[0]);
        Texture texture = GraphicsPipeline.getDefaultResourceFactory()
                .createTexture(prismImage);
        java.awt.Image awtImage = ((J2DTexture) texture).getBufferedImage();
        final Frame f = new Frame();
        f.addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
        f.add(new ImageCanvas(awtImage));
        f.pack();
        f.setVisible(true);
    }

    private static class TestInputStream extends InputStream {

        private final InputStream delegate;

        public TestInputStream(InputStream delegate) {
            this.delegate = delegate;
        }

        @Override
        public int read() throws IOException {
            return delegate.read();
        }

        @Override
        public int read(byte[] b, int off, int len) throws IOException {
            return delegate.read(b, off, Math.min(len, 128));
        }
    }

    private static class ImageCanvas extends Canvas {

        java.awt.Image image;

        public ImageCanvas(java.awt.Image image) {
            this.image = image;
        }

        @Override
        public Dimension getPreferredSize() {
            return new Dimension(200, 200);
        }

        @Override
        public void paint(Graphics g) {
            g.drawImage(image, 0, 0, null);
        }
    }
}