Java thumbnail, image watermark, Text watermark map

 

Package com.java.utils;
Import Java.awt.AlphaComposite;
Import Java.awt.Color;
Import Java.awt.Font;
Import Java.awt.Graphics2D;
Import Java.awt.Image;
Import java.awt.RenderingHints;
Import Java.awt.geom.AffineTransform;
Import Java.awt.image.BufferedImage;
Import Java.awt.image.ColorModel;
Import Java.awt.image.WritableRaster;
Import Java.io.File;
Import Java.io.FileOutputStream;

Import java.io.IOException;
Import Javax.imageio.ImageIO;
Import Com.sun.image.codec.jpeg.JPEGCodec;

Import Com.sun.image.codec.jpeg.JPEGImageEncoder; public class Imagehelper {/** * Generate thumbnails <br/> Save: Imageio.write (BufferedImage, imgtype[jpg/png/...),
         File);  * @param source * Original picture * @param width * thumbnail width * @param Height * thumbnail Height * @param b * Whether equal scaling * * */public static Bu Fferedimage Thumb (bufferedimage source, int width, int hEight, Boolean B) {//Targetw,targeth respectively represents the target long and wide int type = Source.gettype ();
                BufferedImage target = null;
                Double SX = (double) width/source.getwidth ();

                Double sy = (double) height/source.getheight ();
                                if (b) {if (sx > sy) {sx = SY;
                        width = (int) (SX * SOURCE.GETWIDTH ());
                                else {sy = SX;
                        Height = (int) (SY * source.getheight ());
                        } if (type = = Bufferedimage.type_custom) {//Handmade
                        ColorModel cm = Source.getcolormodel ();
                        WritableRaster raster = cm.createcompatiblewritableraster (width, height); Boolean alphapremultiplied = cm. isalphapremultiplied ();
                target = new BufferedImage (cm, raster, alphapremultiplied, null);
                else target = new BufferedImage (width, height, type);
                Graphics2D g = target.creategraphics (); Smoother than Exlax:g.setrenderinghint (renderinghints.key_rendering, R
                enderinghints.value_render_quality);
                G.drawrenderedimage (source, affinetransform.getscaleinstance (SX, SY));
                G.dispose ();
        return target; /** * Image Watermark * * @param imgpath * Pending picture * @param Markpat            H * Watermark Image * @param x * watermark is located in the upper-left corner of the image x coordinate value * @param y * Watermark is at the y-coordinate of the upper-left corner of the picture * @param alpha * watermark Transparency 0.1f ~ 1.0f */Public stat IC void Watermark (String imgpath, String markpath, int x, int y, float Alpha) {try {//Load pending graph

                        Piece file Image img = imageio.read (new file (Imgpath)); BufferedImage image = New BufferedImage (Img.getwidth (NULL), IMG. getheight (NULL),
                        BUFFEREDIMAGE.TYPE_INT_RGB);
                        Graphics2D g = image.creategraphics ();

                        G.drawimage (IMG, 0, 0, NULL);
                        Load watermark picture file image Src_biao = imageio.read (new file (Markpath));
                        G.setcomposite (Alphacomposite.getinstance (alphacomposite.src_atop, Alpha));
                        G.drawimage (Src_biao, x, y, null);

                        G.dispose ();
                        Save the processed file FileOutputStream out = new FileOutputStream ("d://jinlei.jpg"); JPEGImageEncoder Encoder = Jpegcodec.createjpegencoder (out);
                        Encoder.encode (image);
                Out.close ();
                catch (Exception e) {e.printstacktrace (); }/** * Text watermark * * @param imgpath * Pending picture * @par            AM Text * watermark Text * @param font * Watermark Font information * @param color * Watermark Font Color * @param x * watermark is located in the upper-left corner of the picture x coordinate * @param y * watermark bit The y-coordinate value in the upper-left corner of the picture * @param alpha * watermark Transparency 0.1f ~ 1.0f */public static void text
                Mark (String Imgpath, string text, font font, color color, int x, int y, float alpha) {

                        try {font Dfont = (font = NULL)? New Font ("XXFarEastFont-Arial"): Font; Image img = imageio.read (New File (Imgpath)); BufferedImage image = New BufferedImage (Img.getwidth (NULL), IMG. getheight (NULL),
                        BUFFEREDIMAGE.TYPE_INT_RGB);

                        Graphics2D g = image.creategraphics ();
                        G.drawimage (IMG, 0, 0, NULL);
                        G.setcolor (color);
                        G.setfont (Dfont);
                        G.setcomposite (Alphacomposite.getinstance (alphacomposite.src_atop, Alpha));
                        g.DrawString (text, x, y);
                        G.dispose ();
                        FileOutputStream out = new FileOutputStream ("d://jinlei.jpg");
                        JPEGImageEncoder encoder = Jpegcodec.createjpegencoder (out);
                        Encoder.encode (image);
                Out.close ();
                catch (Exception e) {System.out.println (e);
        
        }
        }public static void Main (string[] args) throws IOException {//Font Titlefont = new Font ("Arial", Font.Bold, 30);
        	
New Imagehelper (). Textmark ("D://jl.jpg", "good description, yes, one more, what do you want to text", Titlefont, color.red, MB, 1.0f);
		New Imagehelper (). Watermark ("D://jl.jpg", "d://sy.jpg", MB, 0.5f); }
}