Method needSource

src/pdf/PDFExportContext.cpp:126–128

Returns true unless we only need the shape of the drawing. */

  /* Returns true unless we only need the shape of the drawing. */
  bool needSource() {
    return blendMode != BlendMode::Clear;
  }

  /* If the shape is different than the alpha component of the content, then
     * setShape should be called with the shape.  In particular, images and