scaling_36295066.java

/*
 * Copyright 2017 Patrick Favre-Bulle
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

public class ImageUtil {
    public static BufferedImage scaleImgScalr(BufferedImage imageToScale, int dWidth, int dHeight, ImageType.ECompression compression, Color background, boolean antiAlias) {
        BufferedImage scaledImage = null;
        if (imageToScale != null) {
            scaledImage = Scalr.resize(imageToScale, Scalr.Method.ULTRA_QUALITY, Scalr.Mode.FIT_EXACT, dWidth, dHeight, null);

            if (!compression.hasTransparency) {
                BufferedImage convertedImg = new BufferedImage(scaledImage.getWidth(), scaledImage.getHeight(), BufferedImage.TYPE_INT_RGB);
                convertedImg.getGraphics().drawImage(scaledImage, 0, 0, background, null);
                scaledImage = convertedImg;
            }
        }
        return scaledImage;
    }
    
    
    public static BufferedImage scaleThumbnailator(BufferedImage imageToScale, int dWidth, int dHeight, ImageType.ECompression compression, Color background, boolean antiAlias) {
        BufferedImage scaledImage = null;
        if (imageToScale != null) {
            Resizer resizer = DefaultResizerFactory.getInstance()
                    .getResizer(new Dimension(imageToScale.getWidth(), imageToScale.getHeight()), new Dimension(dWidth, dHeight));

            scaledImage = new FixedSizeThumbnailMaker(dWidth, dHeight, false, true)
                    .resizer(resizer)
                    .make(imageToScale);

            if (!compression.hasTransparency) {
                BufferedImage convertedImg = new BufferedImage(scaledImage.getWidth(), scaledImage.getHeight(), BufferedImage.TYPE_INT_RGB);
                convertedImg.getGraphics().drawImage(scaledImage, 0, 0, background, null);
                scaledImage = convertedImg;
            }
        
        return scaledImage;
    }
    
    public static BufferedImage scaleJava2d(BufferedImage imageToScale, int dWidth, int dHeight, ImageType.ECompression compression, Color background, boolean antiAlias) {
        BufferedImage scaledImage = null;
        if (imageToScale != null) {
            int imageType = BufferedImage.TYPE_INT_RGB;
            if (compression == ImageType.ECompression.PNG || compression == ImageType.ECompression.GIF || imageType == 0) {
                imageType = BufferedImage.TYPE_INT_ARGB;
            }

            scaledImage = new BufferedImage(dWidth, dHeight, imageType);
            Graphics2D graphics2D = scaledImage.createGraphics();
            graphics2D.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
            graphics2D.setRenderingHint(RenderingHints.KEY_ALPHA_INTERPOLATION, RenderingHints.VALUE_ALPHA_INTERPOLATION_QUALITY);
            graphics2D.setRenderingHint(RenderingHints.KEY_COLOR_RENDERING, RenderingHints.VALUE_COLOR_RENDER_QUALITY);
            graphics2D.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
            graphics2D.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);


            if (compression == ImageType.ECompression.JPG) {
                graphics2D.drawImage(imageToScale, 0, 0, dWidth, dHeight, null);
            } else {
                graphics2D.drawImage(imageToScale, 0, 0, dWidth, dHeight, null);
            }

            graphics2D.dispose();
        }
        return scaledImage;
    }
  }