TextImageRenderer.java :  » Java-3D » jzy3d » org » jzy3d » plot3d » text » drawable » Java Open Source

package org.jzy3d.plot3d.text.drawable;

import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.image.BufferedImage;

import org.jzy3d.maths.IntegerCoord2d;
import org.jzy3d.plot3d.rendering.textures.BufferedImageTexture;

public class TextImageRenderer {
  protected static int OFFSET_CONSTANT = 13;
  
  public TextImageRenderer(String txt, Font font){
    this.text = txt;
    this.font = font;
    
  }
  public BufferedImageTexture getImage(){
    return getImage(1);
  }

  public BufferedImageTexture getImage(float ratio){
    IntegerCoord2d c = guessImageDimension(text);
    c.x+=OFFSET_CONSTANT;
    
    BufferedImage img = new BufferedImage(((int)(c.x*ratio)), ((int)(c.y*ratio)), BufferedImage.TYPE_INT_ARGB);
    Graphics g = img.getGraphics();
    //g.drawRect(0, 0, c.x-1, c.y-1);
    g.setFont(font);
    g.drawString(text, 0, c.y-1);
    return new BufferedImageTexture(img);
  }
  
  protected IntegerCoord2d guessImageDimension(String text){
    BufferedImage img = new BufferedImage(100,10, BufferedImage.TYPE_INT_ARGB);
    Graphics g = img.getGraphics();
    FontMetrics fm = g.getFontMetrics();    
    return new IntegerCoord2d( fm.stringWidth(text), fm.getHeight());
  }
  
  protected String text;
  protected Font font;
}