import java.awt.Color;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.RenderingHints;
import java.awt.font.FontRenderContext;
import java.awt.font.LineMetrics;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import javax.imageio.ImageIO;
import org.apache.log4j.Logger;
public class ImageUtil {
public final static Logger LOG = Logger.getLogger(ImageUtil.class);
public static final HashMap<RenderingHints.Key, Object> RenderingProperties = new HashMap<>();
static{
RenderingProperties.put(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
RenderingProperties.put(RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_PURE);
RenderingProperties.put(RenderingHints.KEY_FRACTIONALMETRICS, RenderingHints.VALUE_FRACTIONALMETRICS_ON);
}
public static BufferedImage textToImage(int width,int height,String Text, Font f, float Size,String fileName,boolean isFile) throws IOException{
//Derives font to new specified size, can be removed if not necessary.
try{
double size = height/3;
if(width>height) size = height/3;
else size =width/3;
if(size<1) size =1;
if(f == null) f = new Font("Arial", Font.PLAIN, (int) size);
f = f.deriveFont((float)size);
FontRenderContext frc = new FontRenderContext(null, true, true);
//Calculate size of buffered image.
//LineMetrics lm = f.getLineMetrics(Text, frc);
LOG.debug("textToImage...2 "+frc.toString());
char[] array = Text.toCharArray();
Rectangle2D r2d = f.getStringBounds(array, 0, array.length, frc);
/* Rectangle2D r2d = f.getStringBounds(Text, frc);*/
LOG.debug("textToImage...3 ");
if(r2d.getWidth() > width) {
size=size/1.5;
if(size <1) size = 1;
f = new Font("Arial", Font.PLAIN, (int) size);
f = f.deriveFont((float)size);
frc = new FontRenderContext(null, true, true);
// lm = f.getLineMetrics(Text, frc);
r2d = f.getStringBounds(Text, frc);
}
double realHeight = r2d.getHeight();
double realWidth = r2d.getWidth();
// BufferedImage img = new BufferedImage((int)Math.ceil(r2d.getWidth()), (int)Math.ceil(r2d.getHeight()), BufferedImage.TYPE_INT_RGB);
BufferedImage img = new BufferedImage((int)Math.ceil(width), (int)Math.ceil(height), BufferedImage.TYPE_INT_RGB);
Graphics2D g2d = img.createGraphics();
g2d.setRenderingHints(RenderingProperties);
Color backColor = new Color(45, 108, 147);
g2d.setBackground(backColor);
g2d.setColor(Color.WHITE);
g2d.clearRect(0, 0, img.getWidth(), img.getHeight());
g2d.setFont(f);
// g2d.drawString(Text, 0, lm.getAscent());
g2d.drawString(Text, (float) ((width/2)-(realWidth/2)), (float) ((height/2)+(realHeight/4)));
g2d.dispose();
if(isFile) ImageIO.write(img, "jpg", new File(fileName));
return img;
}catch(Exception e){
LOG.error(e);
throw e;
}
}
public static BufferedImage textToImage1(int width,int height,String Text, Font f, float Size,String fileName,boolean isFile) throws IOException{
BufferedImage img = new BufferedImage((int)Math.ceil(width), (int)Math.ceil(height), BufferedImage.TYPE_INT_RGB);
Graphics2D g2d = img.createGraphics();
boolean sizeOk = false;
double size = height/3;
if(width>height) size = height/3;
else size =width/3;
int realWidth = 10;
int realHeight = 10;
while(!sizeOk){
if(f == null) f = g2d.getFont();
f = f.deriveFont((float)size);
FontMetrics fm = g2d.getFontMetrics(f);
realWidth = fm.stringWidth(Text);
realHeight = fm.getHeight();
size=size/1.5;
if(realWidth<width || size<0) sizeOk = true;
}
g2d.setRenderingHints(RenderingProperties);
Color backColor = new Color(45, 108, 147);
g2d.setBackground(backColor);
g2d.setColor(Color.WHITE);
g2d.clearRect(0, 0, img.getWidth(), img.getHeight());
g2d.setFont(f);
// g2d.drawString(Text, 0, lm.getAscent());
g2d.drawString(Text, (float) ((width/2)-(realWidth/2)), (float) ((height/2)+(realHeight/4)));
g2d.dispose();
if(isFile) ImageIO.write(img, "jpg", new File(fileName));
return img;
}
public static BufferedImage resizeImage(BufferedImage image, int width, int height) {
float w = new Float(width) ;
float h = new Float(height) ;
if ( w <= 0 && h <= 0 ) {
w = image.getWidth();
h = image.getHeight();
} else if ( w <= 0 ) {
w = image.getWidth() * ( h / image.getHeight() );
} else if ( h <= 0 ) {
h = image.getHeight() * ( w / image.getWidth() );
}
int wi = (int) w;
int he = (int) h;
BufferedImage resizedImage = new BufferedImage(wi,he,BufferedImage.TYPE_INT_RGB);
resizedImage.getGraphics().drawImage(
image.getScaledInstance(wi,he,Image.SCALE_AREA_AVERAGING),
0,0,wi,he,null
);
return resizedImage;
}
}
