import java.io.FileInputStream;
import java.io.FileNotFoundException;
import javafx.application.Application;

import javafx.scene.Group;
import javafx.scene.Scene;

import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.image.PixelReader;
import javafx.scene.image.PixelWriter;
import javafx.scene.image.WritableImage;

import javafx.scene.paint.Color;
import javafx.stage.Stage;

public class widgets extends Application {
    @Override
    public void start(Stage stage) throws FileNotFoundException {
        //Creating an image
        Image image = new Image(new FileInputStream("/home/robot/IdeaProjects/UI_controls/src/main/java/com/example/ui_controls/HIS_logo.png"));
        int width = (int)image.getWidth();
        int height = (int)image.getHeight();

        //Creating a writable image
        WritableImage wImage = new WritableImage(width, height);

        //Reading color from the loaded image
        PixelReader pixelReader = image.getPixelReader();

        //getting the pixel writer
        PixelWriter writer = wImage.getPixelWriter();

        //Reading the color of the image
        for(int y = 0; y < height; y++) {
            for(int x = 0; x < width; x++) {
                //Retrieving the color of the pixel of the loaded image
                Color color = pixelReader.getColor(x, y);

                //Setting the color to the writable image
                if (x<y)
                    writer.setColor(x, y, color.darker());
                else if (y > 200)
                    writer.setColor(x, y, color.brighter());
                else
                    writer.setColor(x, y, color.invert());
            }
        }
        //Setting the view for the writable image
        ImageView imageView = new ImageView(wImage);

        //Creating a Group object
        Group root = new Group(imageView);

        //Creating a scene object
        Scene scene = new Scene(root, 1150, 500);

        //Setting title to the Stage
        stage.setTitle("Writing pixels ");

        //Adding scene to the stage
        stage.setScene(scene);

        //Displaying the contents of the stage
        stage.show();
    }
    public static void main(String args[]) {
        launch(args);
    }
}