You can achieve this by setting def_view = 3 in Global.default_config...
in this mode, the PDFViewDual is modified as:
PDFViewDual view = new PDFViewDual(this.getContext());
boolean paras[] = new boolean[m_doc.GetPageCount()];
int cur = 0;
while( cur < paras.length ) {
paras[cur] = false;
cur++;
}
view.vSetLayoutPara(null, paras, m_rtol);