Esempio n. 1
0
  private void enqueueGlyphList(final SunGraphics2D sg2d, final GlyphList gl) {
    // assert rq.lock.isHeldByCurrentThread();
    RenderBuffer buf = rq.getBuffer();
    final int totalGlyphs = gl.getNumGlyphs();
    int glyphBytesRequired = totalGlyphs * BYTES_PER_GLYPH_IMAGE;
    int posBytesRequired = gl.usePositions() ? totalGlyphs * BYTES_PER_GLYPH_POSITION : 0;
    int totalBytesRequired = 24 + glyphBytesRequired + posBytesRequired;

    final long[] images = gl.getImages();
    final float glyphListOrigX = gl.getX() + 0.5f;
    final float glyphListOrigY = gl.getY() + 0.5f;

    // make sure the RenderQueue keeps a hard reference to the FontStrike
    // so that the associated glyph images are not disposed while enqueued
    rq.addReference(gl.getStrike());

    if (totalBytesRequired <= buf.capacity()) {
      if (totalBytesRequired > buf.remaining()) {
        // process the queue first and then enqueue the glyphs
        rq.flushNow();
      }
      rq.ensureAlignment(20);
      buf.putInt(DRAW_GLYPH_LIST);
      // enqueue parameters
      buf.putInt(totalGlyphs);
      buf.putInt(createPackedParams(sg2d, gl));
      buf.putFloat(glyphListOrigX);
      buf.putFloat(glyphListOrigY);
      // now enqueue glyph information
      buf.put(images, 0, totalGlyphs);
      if (gl.usePositions()) {
        float[] positions = gl.getPositions();
        buf.put(positions, 0, 2 * totalGlyphs);
      }
    } else {
      // queue is too small to accomodate glyphs; perform
      // the operation directly on the queue flushing thread
      rq.flushAndInvokeNow(
          new Runnable() {
            public void run() {
              drawGlyphList(
                  totalGlyphs,
                  gl.usePositions(),
                  gl.isSubPixPos(),
                  gl.isRGBOrder(),
                  sg2d.lcdTextContrast,
                  glyphListOrigX,
                  glyphListOrigY,
                  images,
                  gl.getPositions());
            }
          });
    }
  }