JAVA : Take screenshot of text file

package com.gotobo.in;


import java.awt.Color;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.image.BufferedImage;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.imageio.ImageIO;

public class MultiLineTextToImage{
	
	static String INPATH="";
	static String OUTPATH="";
	File f = null;
	PrintWriter writer = null;
	PrintWriter writer2 = null;
	PrintWriter writer3 = null;
	PrintWriter writer4 = null;
	PrintWriter writer5 = null;
	String tempfile="";
	
	
	public void convert(String inputpath, String outputpath)
    {
		//String text = "Hello";
		
		INPATH = inputpath;
		OUTPATH = outputpath;
		String temptext="";
		String temptext2="";
		int flag1=0;int flag2=0;
		int setht=0;
		
		
		
		try 
		{
			
  try {
								tempfile = OUTPATH+"Sample.txt";
								writer = new PrintWriter(tempfile, "UTF-8");
								writer.println("Hello Tobo, How are you?");
								writer.close();
							} catch (Exception e) {
								// TODO Auto-generated catch block
								e.printStackTrace();
							}
        /*
           Because font metrics is based on a graphics context, we need to create
           a small, temporary image so we can ascertain the width and height
           of the final image
         */
		
        int width = 1250;
        int height = 500;
        

        BufferedImage img = new BufferedImage(1, 1, BufferedImage.TYPE_INT_ARGB);
        Graphics2D g2d = img.createGraphics();
        Font font = new Font("Consolas", Font.PLAIN, 14);
        g2d.setFont(font);
        FontMetrics fm = g2d.getFontMetrics();

        g2d.dispose();

        img = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
        g2d = img.createGraphics();
        g2d.setRenderingHint(RenderingHints.KEY_ALPHA_INTERPOLATION, RenderingHints.VALUE_ALPHA_INTERPOLATION_QUALITY);
        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        g2d.setRenderingHint(RenderingHints.KEY_COLOR_RENDERING, RenderingHints.VALUE_COLOR_RENDER_QUALITY);
        g2d.setRenderingHint(RenderingHints.KEY_DITHERING, RenderingHints.VALUE_DITHER_ENABLE);
        g2d.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS, RenderingHints.VALUE_FRACTIONALMETRICS_ON);
        g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
        g2d.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
        g2d.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_PURE);
        g2d.setFont(font);
        //fm = g2d.getFontMetrics();
        g2d.setColor(Color.BLACK);

        File file = null;
		try {
			file = new File(tempfile);
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

        BufferedReader br=null;
        int nextLinePosition=15;
        int fontSize = 12;
        try {
            br = new BufferedReader(new FileReader(file));

            String line;
            while ((line = br.readLine()) != null) {
               g2d.drawString(line, 0, nextLinePosition);
               nextLinePosition = nextLinePosition + fontSize;
            }
        br.close();
        } catch (FileNotFoundException ex) {
            //Logger.getLogger(Testing.class.getName()).log(Level.SEVERE, null, ex);
        } catch (IOException ex) {
            //Logger.getLogger(Testing.class.getName()).log(Level.SEVERE, null, ex);
        }


        g2d.dispose();
        try {
            ImageIO.write(img, "png", new File(tempfile.substring(0, tempfile.indexOf(".txt"))+".png"));
        } catch (IOException ex) {
            ex.printStackTrace();
        }
        
						}
					}
				}
			}			
					
			
		}
		catch(Exception ytr) {ytr.printStackTrace();}
		}
    
}

In above code there is a text file named “sample.txt”, it gets converted to “sample.png”. Just call the convert method and pass input path and output path as arguements and execute the code.

Happy coding

🙂