Examples with ImageIO com.codename1.ui.util.ImageIO used on opensource projects

Example 6 with ImageIO

use of com.codename1.ui.util.ImageIO in project CodenameOne by codenameone.

the class EncodedImage method createFromRGB.

/**
 * Tries to create an encoded image from RGB which is more efficient,
 * however if this fails it falls back to regular RGB image. This method
 * is slower than creating an RGB image (not to be confused with the RGBImage class which is
 * something ENTIRELY different!).
 *
 * @param argb an argb array
 * @param width the width for the image
 * @param height the height for the image
 * @param jpeg uses jpeg format internally which is opaque and could be faster/smaller
 * @return an image which we hope is an encoded image
 */
public static Image createFromRGB(int[] argb, int width, int height, boolean jpeg) {
    Image i = Image.createImage(argb, width, height);
    ImageIO io = ImageIO.getImageIO();
    if (io != null) {
        String format;
        if (jpeg) {
            if (!io.isFormatSupported(ImageIO.FORMAT_JPEG)) {
                return i;
            }
            format = ImageIO.FORMAT_JPEG;
        } else {
            if (!io.isFormatSupported(ImageIO.FORMAT_PNG)) {
                return i;
            }
            format = ImageIO.FORMAT_PNG;
        }
        try {
            ByteArrayOutputStream bo = new ByteArrayOutputStream();
            io.save(i, bo, format, 0.9f);
            EncodedImage enc = EncodedImage.create(bo.toByteArray());
            Util.cleanup(bo);
            enc.width = width;
            enc.height = height;
            if (jpeg) {
                enc.opaque = true;
                enc.opaqueChecked = true;
            }
            enc.cache = Display.getInstance().createSoftWeakRef(i);
            return enc;
        } catch (IOException err) {
            Log.e(err);
        }
    }
    return i;
}

Example 7 with ImageIO

use of com.codename1.ui.util.ImageIO in project CodenameOne by codenameone.

the class EncodedImage method createFromImage.

/**
 * Converts an image to encoded image
 * @param i image
 * @param jpeg true to try and set jpeg, will do a best effort but this isn't guaranteed
 * @return an encoded image or null
 */
public static EncodedImage createFromImage(Image i, boolean jpeg) {
    if (i instanceof EncodedImage) {
        return ((EncodedImage) i);
    }
    ImageIO io = ImageIO.getImageIO();
    if (io != null) {
        String format;
        if (jpeg) {
            if (!io.isFormatSupported(ImageIO.FORMAT_JPEG)) {
                format = ImageIO.FORMAT_PNG;
            } else {
                format = ImageIO.FORMAT_JPEG;
            }
        } else {
            if (!io.isFormatSupported(ImageIO.FORMAT_PNG)) {
                format = ImageIO.FORMAT_JPEG;
            } else {
                format = ImageIO.FORMAT_PNG;
            }
        }
        try {
            ByteArrayOutputStream bo = new ByteArrayOutputStream();
            io.save(i, bo, format, 0.9f);
            EncodedImage enc = EncodedImage.create(bo.toByteArray());
            Util.cleanup(bo);
            enc.width = i.getWidth();
            enc.height = i.getHeight();
            if (format == ImageIO.FORMAT_JPEG) {
                enc.opaque = true;
                enc.opaqueChecked = true;
            }
            enc.cache = Display.getInstance().createSoftWeakRef(i);
            return enc;
        } catch (IOException err) {
            Log.e(err);
        }
    }
    return null;
}