BitmapFontWriter.java 文件源码

/** A utility method to write the given array of pixmaps to the given output directory, with the specified file name. If the
 * pages array is of length 1, then the resulting file ref will look like: "fileName.png".
 *
 * If the pages array is greater than length 1, the resulting file refs will be appended with "_N", such as "fileName_0.png",
 * "fileName_1.png", "fileName_2.png" etc.
 *
 * The returned string array can then be passed to the <tt>writeFont</tt> method.
 *
 * Note: None of the pixmaps will be disposed.
 *
 * @param pages the pages of pixmap data to write
 * @param outputDir the output directory
 * @param fileName the file names for the output images
 * @return the array of string references to be used with <tt>writeFont</tt> */
public static String[] writePixmaps (Pixmap[] pages, FileHandle outputDir, String fileName) {
  if (pages == null || pages.length == 0) throw new IllegalArgumentException("no pixmaps supplied to BitmapFontWriter.write");

  String[] pageRefs = new String[pages.length];

  for (int i = 0; i < pages.length; i++) {
    String ref = pages.length == 1 ? (fileName + ".png") : (fileName + "_" + i + ".png");

    // the ref for this image
    pageRefs[i] = ref;

    // write the PNG in that directory
    PixmapIO.writePNG(outputDir.child(ref), pages[i]);
  }
  return pageRefs;
}