How to use

imageSize

method

in

org.mapsforge.core.graphics.GraphicUtils

AwtResourceBitmap(InputStream inputStream, float scaleFactor, int width, int height, int percent) throws IOException {
  super(inputStream);
  float[] newSize = GraphicUtils.imageSize(getWidth(), getHeight(), scaleFactor, width, height, percent);
  scaleTo((int) newSize[0], (int) newSize[1]);
}

public static BufferedImage getResourceBitmap(InputStream inputStream, String name, float scaleFactor, float defaultSize, int width, int height, int percent) throws IOException {
  try {
    URI uri = SVGCache.getSVGUniverse().loadSVG(inputStream, name);
    SVGDiagram diagram = SVGCache.getSVGUniverse().getDiagram(uri);
    double scale = scaleFactor / Math.sqrt((diagram.getHeight() * diagram.getWidth()) / defaultSize);
    float[] bmpSize = GraphicUtils.imageSize(diagram.getWidth(), diagram.getHeight(), (float) scale, width, height, percent);
    SVGIcon icon = new SVGIcon();
    icon.setAntiAlias(true);
    icon.setAutosize(SVGIcon.AUTOSIZE_STRETCH);
    icon.setPreferredSize(new Dimension((int) bmpSize[0], (int) bmpSize[1]));
    icon.setSvgURI(uri);
    BufferedImage bufferedImage = new BufferedImage(icon.getIconWidth(), icon.getIconHeight(), BufferedImage.TYPE_INT_ARGB);
    icon.paintIcon(null, bufferedImage.createGraphics(), 0, 0);
    return bufferedImage;
  } catch (Exception e) {
    throw new IOException(e);
  }
}

  throw new IOException("BitmapFactory failed to decodeStream");
float[] newSize = GraphicUtils.imageSize(bitmap.getWidth(), bitmap.getHeight(), scaleFactor, width, height, percent);
if ((int) newSize[0] != bitmap.getWidth() || (int) newSize[1] != bitmap.getHeight())
  bitmap = Bitmap.createScaledBitmap(bitmap, (int) newSize[0], (int) newSize[1], true);

public static android.graphics.Bitmap getResourceBitmap(InputStream inputStream, float scaleFactor, float defaultSize, int width, int height, int percent) throws IOException {
  try {
    // not in any cache, so need to render svg
    SVG svg = SVG.getFromInputStream(inputStream);
    Picture picture = svg.renderToPicture();
    double scale = scaleFactor / Math.sqrt((picture.getHeight() * picture.getWidth()) / defaultSize);
    float[] bmpSize = GraphicUtils.imageSize(picture.getWidth(), picture.getHeight(), (float) scale, width, height, percent);
    android.graphics.Bitmap bitmap = android.graphics.Bitmap.createBitmap((int) Math.ceil(bmpSize[0]),
        (int) Math.ceil(bmpSize[1]), AndroidGraphicFactory.TRANSPARENT_BITMAP);
    Canvas canvas = new Canvas(bitmap);
    canvas.drawPicture(picture, new RectF(0, 0, bmpSize[0], bmpSize[1]));
    return bitmap;
  } catch (Exception e) {
    throw new IOException(e);
  }
}