gistfile1.java

package org.maite.types;

import lombok.extern.log4j.Log4j;

import java.io.IOException;



@Log4j
public class GDImageWrapper implements ImageWrapper<GDImageWrapper> {

    public static final String JPEG = "Image::JPEG";

    private PHP php = new PHP();

    private String file;



    public GDImageWrapper(File file) throws IOException {
        this(file.getAbsolutePath());
    }



    public GDImageWrapper(String file) throws IOException {
        this.file = file.replace("file://", "");
        php = init();
    }



    @Override
    public GDImageWrapper crop(int x, int y, int width, int height) {
        php.add("$image->crop(%d, %d, %d, %d);", x, y, width, height);
        return this;
    }



    @Override
    public GDImageWrapper cropTo(int[] widthHeight) throws ImageWrapperException {

        if (widthHeight.length != 2) {
            throw new ImageWrapperException("Given array must contain only: width, height.");
        }
        return cropTo(widthHeight[0], widthHeight[1]);
    }



    @Override
    public GDImageWrapper cropTo(int width, int height) throws ImageWrapperException {

        int source[];
        double ratio = ((double) width)/height;

        if (ratio < getRatio()) {
            int resize = (int) Math.round(getHeight() * ratio);
            int halfx = getWidth() / 2;
            source = new int[] {
                    halfx-(resize/2),
                    0,
                    resize,
                    getHeight()
            };

        } else {
            int resize = (int) Math.round(getWidth() / ratio);
            int halfy = getHeight() / 2;
            source = new int[] {
                    0,
                    halfy-(resize/2),
                    getWidth(),
                    resize,
            };
        }

        log.debug(String.format("Cropping to requested [%d,%d] as a crop from [%d-%d,%d-%d]",
                width, height,
                source[0], source[0]+source[2], source[1], source[1]+source[3]));

        crop(source[0], source[1], source[2], source[3]);
        resize(width, height);

        return this;
    }



    @Override
    public GDImageWrapper resize(Integer width, Integer height) throws ImageWrapperException {
        final String stretch = width == null || height == null
                ? "Image::FIT" : "Image::EXACT";

        php.add("$image->resize(%d, %d, %s);", width, height, stretch);
        return this;
    }



    @Override
    public GDImageWrapper write(String fileName, String type, float quality) throws ImageWrapperException {
        php.add("$image->save('%s', %d, %s);",
                fileName.replace("file://", ""),
                (int) (quality * 100),
                type);
        try {
            php.run();
        } catch (Exception e) {
            throw new ImageWrapperException(e);
        }
        return this;
    }



    @Override
    public GDImageWrapper write(File file, String type, float quality) throws ImageWrapperException {
        write(file.getAbsolutePath(), type, quality);
        return this;
    }



    private String runSimple(String command) {
        try {
            return init().add(command).run();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }



    @Override
    public int getWidth() {
        return Integer.valueOf(runSimple("echo $image->getWidth();"));
    }



    @Override
    public int getHeight() {
        return Integer.valueOf(runSimple("echo $image->getHeight();"));    }



    @Override
    public double getRatio() {
        return Double.valueOf(runSimple("echo $image->getWidth() / $image->getHeight();"));
    }



    @Override
    public void flush() {
    }



    private PHP init() throws IOException {

        File netteImage = new File("/tmp/netteImage.php");

        if (!netteImage.exists()) {
            IOUtils.copy(
                    getClass().getResourceAsStream("/scripts/netteImage.php"),
                    netteImage.getOutputStream());
        }

        final String path = netteImage.getPath();
        final PHP php = new PHP();
        php.add("require '%s';", path);
        php.add("$image = Image::fromFile('%s');", file);
        return php;
    }
}