java - Printing JPanel into PDF with itext without displaying it -


i have number of sheets contains numbers of jpanel. jpanels parents jtextpane, once panel visible can print pdf itext, if page not itext doesnt print panel. @ time of printing ducument created , contents added jtextpane , size of panel known too. hier print code

public static void printcomponent(final jcomponent component, final rectangle bounds)         throws documentexception, saxexception, ioexception, parserconfigurationexception {     if (pdfcanvas == null) {         return;     }      final rectangle alloc = new rectangle(component.getbounds().width, component.getbounds().height);      pdfcanvas.savestate();      pdfcanvas.setleading(0);     pdfcanvas.setcharacterspacing(0);     final pdftemplate canvas = pdfcanvas.createtemplate(alloc.width, alloc.height);      final fontmapper arialuni = new fontmapper() {          @override         public basefont awttopdf(final java.awt.font font) {             //return basefont....         }          @override         public java.awt.font pdftoawt(final basefont font, final int size) {             return null;         }      };      final graphics2d g2d = canvas.creategraphics(alloc.width, alloc.height, arialuni, true, 1.0f);      g2d.setrenderinghint(renderinghints.key_antialiasing, renderinghints.value_antialias_on);     g2d.setrenderinghint(renderinghints.key_text_antialiasing, renderinghints.value_text_antialias_on);     g2d.setrenderinghint(renderinghints.key_rendering, renderinghints.value_render_quality);     g2d.scale(printscalefactor, printscalefactor);     component.printall(g2d);       g2d.dispose();      component.revalidate();      final point2d root = gettransformedprinterpoint(new point(bounds.x, bounds.y), true);     pdfcanvas.addtemplate(canvas, (float) root.getx(), (float) root.gety() - alloc.height);     pdfcanvas.restorestate(); }

this code works expected when panel once visible.

thanks


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