package com.hmw.picMark;
import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.geom.AffineTransform;
import java.awt.image.AffineTransformOp;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
public final class ImageUtils {
private static final String PICTRUE_FORMATE_JPG = "jpg";
private ImageUtils(){}
/**
* Add image watermarking
* @param targetImg Target image path, such as: C://myPictrue//1.jpg
* @param waterImg Watermark image path, such as: C://myPictrue//logo.png
* @param x Watermark image from the left of the target image offset, if x<0, It's right in the middle
* @param y The offset of the watermark image from the upper side of the target image, if y<0, It's right in the middle
* @param alpha transparency (0.0 -- 1.0, 0.0 Is completely transparent, 1.0 Is completely opaque )
*/
public final static void pressImage(String targetImg, String waterImg, int x, int y, float alpha) {
try {
File file = new File(targetImg);
Image image = ImageIO.read(file);
int width = image.getWidth(null);
int height = image.getHeight(null);
BufferedImage bufferedImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
Graphics2D g = bufferedImage.createGraphics();
g.drawImage(image, 0, 0, width, height, null);
Image waterImage = ImageIO.read(new File(waterImg)); //Watermark file
int width_1 = waterImage.getWidth(null);
int height_1 = waterImage.getHeight(null);
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, alpha));
int widthDiff = width - width_1;
int heightDiff = height - height_1;
if(x < 0){
x = widthDiff / 2;
}else if(x > widthDiff){
x = widthDiff;
}
if(y < 0){
y = heightDiff / 2;
}else if(y > heightDiff){
y = heightDiff;
}
g.drawImage(waterImage, x, y, width_1, height_1, null); //Watermark file The end of the
g.dispose();
ImageIO.write(bufferedImage, PICTRUE_FORMATE_JPG, file);
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* Add text watermark
* @param targetImg Target image path, such as: C://myPictrue//1.jpg
* @param pressText Watermark text, Such as: China securities network
* @param fontName Font name, Such as: song typeface
* @param fontStyle Font styles such as bold and italics (Font.BOLD|Font.ITALIC)
* @param fontSize Font size in pixels
* @param color The font color
* @param x Watermark text from the left of the target image offset if x<0, It's right in the middle
* @param y Watermark text distance from the upper side of the target image offset, if y<0, It's right in the middle
* @param alpha transparency (0.0 -- 1.0, 0.0 Is completely transparent, 1.0 Is completely opaque )
*/
public static void pressText(String targetImg, String pressText, String fontName, int fontStyle, int fontSize, Color color, int x, int y, float alpha) {
try {
File file = new File(targetImg);
Image image = ImageIO.read(file);
int width = image.getWidth(null);
int height = image.getHeight(null);
BufferedImage bufferedImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
Graphics2D g = bufferedImage.createGraphics();
g.drawImage(image, 0, 0, width, height, null);
g.setFont(new Font(fontName, fontStyle, fontSize));
g.setColor(color);
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, alpha));
int width_1 = fontSize * getLength(pressText);
int height_1 = fontSize;
int widthDiff = width - width_1;
int heightDiff = height - height_1;
if(x < 0){
x = widthDiff / 2;
}else if(x > widthDiff){
x = widthDiff;
}
if(y < 0){
y = heightDiff / 2;
}else if(y > heightDiff){
y = heightDiff;
}
g.drawString(pressText, x, y + height_1);
g.dispose();
ImageIO.write(bufferedImage, PICTRUE_FORMATE_JPG, file);
} catch (Exception e) {
e.printStackTrace();
}
}
public static int getLength(String text) {
int textLength = text.length();
int length = textLength;
for (int i = 0; i < textLength; i++) {
if (String.valueOf(text.charAt(i)).getBytes().length > 1) {
length++;
}
}
return (length % 2 == 0) ? length / 2 : length / 2 + 1;
}
public static void resize(String filePath, int height, int width, boolean bb) {
try {
double ratio = 0; //scaling
File f = new File(filePath);
BufferedImage bi = ImageIO.read(f);
Image itemp = bi.getScaledInstance(width, height, BufferedImage.SCALE_SMOOTH);
//Calculate percentage
if ((bi.getHeight() > height) || (bi.getWidth() > width)) {
if (bi.getHeight() > bi.getWidth()) {
ratio = (new Integer(height)).doubleValue() / bi.getHeight();
} else {
ratio = (new Integer(width)).doubleValue() / bi.getWidth();
}
AffineTransformOp op = new AffineTransformOp(AffineTransform.getScaleInstance(ratio, ratio), null);
itemp = op.filter(bi, null);
}
if (bb) {
BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
Graphics2D g = image.createGraphics();
g.setColor(Color.white);
g.fillRect(0, 0, width, height);
if (width == itemp.getWidth(null))
g.drawImage(itemp, 0, (height - itemp.getHeight(null)) / 2, itemp.getWidth(null), itemp.getHeight(null), Color.white, null);
else
g.drawImage(itemp, (width - itemp.getWidth(null)) / 2, 0, itemp.getWidth(null), itemp.getHeight(null), Color.white, null);
g.dispose();
itemp = image;
}
ImageIO.write((BufferedImage) itemp, "jpg", f);
} catch (IOException e) {
e.printStackTrace();
}
}
public static void main(String[] args) throws IOException {
pressImage("C://pic//jpg", "C://pic//test.gif", 5000, 5000, 0f);
pressText("C://pic//jpg", " Mong tsai seal ", " Song typeface ", Font.BOLD|Font.ITALIC, 20, Color.BLACK, 0, 0, 8f);
resize("C://pic//4.jpg", 1000, 500, true);
}
}