| | |
| | | |
| | | You should have received a copy of the GNU Affero General Public License |
| | | along with this program. If not, see <http://www.gnu.org/licenses/>. |
| | | */ |
| | | |
| | | */ |
| | | package de.uhilger.wbx; |
| | | |
| | | import java.awt.Graphics2D; |
| | | import java.awt.Image; |
| | | import java.awt.RenderingHints; |
| | | import java.awt.image.BufferedImage; |
| | | import java.awt.image.ConvolveOp; |
| | | import java.awt.image.Kernel; |
| | | import java.io.File; |
| | | import java.io.FileNotFoundException; |
| | | import java.io.IOException; |
| | | import java.io.OutputStream; |
| | | import java.net.FileNameMap; |
| | | import java.net.URLConnection; |
| | | import javax.imageio.ImageIO; |
| | | import java.util.logging.Logger; |
| | | |
| | | /** |
| | | * Methoden zur Verkleinerung von Bildern |
| | | */ |
| | | public class Bild { |
| | | |
| | | private static final Logger logger = Logger.getLogger(Bild.class.getName()); |
| | | |
| | | public static final int WINZIG = 0; |
| | | public static final int KLEIN = 1; |
| | | public static final int SEMI = 2; |
| | | public static final int MITTEL = 3; |
| | | public static final int GROSS = 4; |
| | | |
| | | |
| | | public static final String[] GRNAME = {"-w", "-k", "-s", "-m", "-g"}; |
| | | public static final int[] GR = {120, 240, 500, 700, 1200}; |
| | | |
| | | public void writeImageStream(Image image, int gr, String mimeType, OutputStream out) throws InterruptedException, IOException { |
| | | ImageIO.write(getReducedImage(image, gr, mimeType), imgType(mimeType), out); |
| | | } |
| | | |
| | | /** |
| | | * |
| | | * @param image |
| | | * @param gr |
| | | * @param mimeType |
| | | * @param vName Name der verkleinerten Datei |
| | | * @throws InterruptedException |
| | | * @throws IOException |
| | | */ |
| | | public void writeImageFile(Image image, int gr, String mimeType, String vName) throws InterruptedException, IOException { |
| | | ImageIO.write(getReducedImage(image, gr, mimeType), imgType(mimeType), new File(vName)); |
| | | } |
| | | |
| | | private BufferedImage getReducedImage(Image image, int gr, String mimeType) throws InterruptedException, IOException { |
| | | BufferedImage img; |
| | | int q = 90; |
| | | float sh = 0.f; |
| | | if(mimeType.contains("jpeg")) { |
| | | img = getReducedImage(image, gr, gr, q, sh, false); |
| | | } else { |
| | | img = getReducedImage(image, gr, gr, q, sh, true); |
| | | } |
| | | return img; |
| | | } |
| | | |
| | | /** |
| | | * Eine in Groesse und Qualitaet verringerte Bilddatei erzeugen |
| | | * @param image Ablageort und Name der Bilddatei |
| | | * @param width neue Breite |
| | | * @param height neue hoehe |
| | | * @param quality neue Qualitaet (0 - 100) |
| | | * @param factor Faktor fuer Schaerfe / Unschaerfe (z.B. -0.15f fuer leichte Unschaerfe, 0.05f fuer leichtes Nachschaerfen) |
| | | * @param withTransparency ob Transparenz benoetigt wird |
| | | * @return neues, in Groesse und Qualitaet entsprechend verringertes Bild |
| | | * @throws java.lang.InterruptedException |
| | | * @throws java.io.FileNotFoundException |
| | | */ |
| | | public BufferedImage getReducedImage(Image image, int width, int height, int quality, float factor, boolean withTransparency) |
| | | throws InterruptedException, FileNotFoundException, IOException { |
| | | |
| | | int imageWidth = image.getWidth(null); |
| | | int imageHeight = image.getHeight(null); |
| | | |
| | | int thumbWidth = width; |
| | | int thumbHeight = height; |
| | | if(imageWidth < width) { |
| | | thumbWidth = imageWidth; |
| | | } |
| | | if(imageHeight < height) { |
| | | thumbHeight = imageHeight; |
| | | } |
| | | double thumbRatio = (double)thumbWidth / (double)thumbHeight; |
| | | double imageRatio = (double)imageWidth / (double)imageHeight; |
| | | if (thumbRatio < imageRatio) { |
| | | thumbHeight = (int)(thumbWidth / imageRatio); |
| | | } |
| | | else { |
| | | thumbWidth = (int)(thumbHeight * imageRatio); |
| | | } |
| | | |
| | | // draw original image to thumbnail image object and |
| | | // scale it to the new size on-the-fly |
| | | //BufferedImage thumbImage = new BufferedImage(thumbWidth, thumbHeight, BufferedImage.TYPE_INT_RGB); |
| | | BufferedImage thumbImage; |
| | | if(withTransparency) { |
| | | thumbImage = new BufferedImage(thumbWidth, thumbHeight, BufferedImage.TYPE_INT_ARGB); |
| | | } else { |
| | | thumbImage = new BufferedImage(thumbWidth, thumbHeight, BufferedImage.TYPE_INT_RGB); |
| | | } |
| | | Graphics2D graphics2D = thumbImage.createGraphics(); |
| | | graphics2D.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR); |
| | | graphics2D.drawImage(image, 0, 0, thumbWidth, thumbHeight, null); |
| | | |
| | | // 30.7.2007: sharpening hinzugefuegt (Anfang) |
| | | //float factor = -0.15f; // minus = sharpen, plus = soften |
| | | //float[] sharpenArray = {0, -1, 0, -1, 5, -1, 0, -1, 0}; |
| | | |
| | | /* |
| | | 30.6.2013: sharpening als Weichmacher nur, wenn Bild < 400 |
| | | */ |
| | | /*if(thumbWidth < 400 || thumbHeight < 400) { |
| | | factor = 0.1f; |
| | | }*/ |
| | | |
| | | if(factor != 0.f) { |
| | | float[] array = {0, factor, 0, factor, 1-(factor*4), factor, 0, factor, 0}; |
| | | Kernel kernel = new Kernel(3, 3, array); |
| | | ConvolveOp cOp = new ConvolveOp(kernel, ConvolveOp.EDGE_NO_OP, null); |
| | | thumbImage = cOp.filter(thumbImage, null); |
| | | } |
| | | // 30.7.2007: sharpening hinzugefuegt (Ende) |
| | | |
| | | return thumbImage; |
| | | } |
| | | |
| | | public String imgType(String mimeType) { |
| | | String imgType; |
| | | if(mimeType.contains("jpg")) { |
| | | if (mimeType.contains("jpg")) { |
| | | imgType = "jpg"; |
| | | } else if(mimeType.contains("jpeg")) { |
| | | } else if (mimeType.contains("jpeg")) { |
| | | imgType = "jpg"; |
| | | } else if(mimeType.contains("png")) { |
| | | } else if (mimeType.contains("png")) { |
| | | imgType = "png"; |
| | | } else if(mimeType.contains("gif")) { |
| | | } else if (mimeType.contains("gif")) { |
| | | imgType = "gif"; |
| | | } else { |
| | | imgType = "jpg"; |
| | | } |
| | | return imgType; |
| | | } |
| | | |
| | | |
| | | /** |
| | | * |
| | | * |
| | | * @param v Bild.WINZIG .. Bild.GROSS |
| | | * @return Länge der längsten Kante in Bildpunkten |
| | | */ |
| | | public int getVariantenGroesse(int v) { |
| | | return GR[v]; |
| | | } |
| | | |
| | | |
| | | public String getVariantenName(int v) { |
| | | return GRNAME[v]; |
| | | } |
| | | |
| | | |
| | | public String getMimeType(File file) { |
| | | String absName = file.getAbsolutePath(); |
| | | FileNameMap fileNameMap = URLConnection.getFileNameMap(); |
| | | return fileNameMap.getContentTypeFor("file://" + absName); |
| | | return fileNameMap.getContentTypeFor("file://" + absName); |
| | | } |
| | | } |