🚀 go-pugleaf

Vinicius Assuncao <vlassuncao@starmedia.com> skrev i
diskussionsgruppsmeddelandet:7ncpab$rjb4@forums.borland.com...
> Hi,
>
> Can I send some objects (like a panel) to the printer???

Yes. If you are using Java2 and Swing, I have made the following
ComponentPrinter.
Call with ComponentPrinter.print(myJComponent).
Note: The component must not contain any images or gradient fills!
(Well, it will still print, but it will be very low rez, and extremely
slow).

class HardPrintable implements Printable {
    Component comp;
    int i=0;
    AffineTransform trans;

    public HardPrintable(Component c) {
        Component frame;
        comp=c;
        PrinterJob printJob = PrinterJob.getPrinterJob();
        printJob.setPrintable(this);
        if (printJob.printDialog()) {
            for (frame=c; frame.getParent() != null;
frame=frame.getParent());
            try {
                debuffer(comp);
                printJob.print();
                rebuffer(comp);
            } catch (Exception ex) {
                ex.printStackTrace();
            }
        }
    }

    // Most of the complication in the print() merthod is because I
scale/rotate the
    // component to fill the page.
    public int print(Graphics g0, PageFormat pf, int pi) throws
PrinterException {
        if (pi >= 1) {
            return Printable.NO_SUCH_PAGE;
        }
        if (!(g0 instanceof Graphics2D)) {
            g0.setColor(Color.black);
            g0.drawString("Jag beh�ver Graphics2D!",
                (int)(pf.getImageableX())+10,(int)(pf.getImageableY()+20));
            return Printable.PAGE_EXISTS;
        }
        Graphics2D g=(Graphics2D)g0;
        Rectangle b=comp.getBounds();
        int w=(int)pf.getImageableWidth(), h=(int)pf.getImageableHeight();

        // Buffer the transform, as print() is called several times per page
        if (trans==null) {
            trans=new AffineTransform();
            trans.translate(pf.getImageableX(), pf.getImageableY());
            GregorianCalendar c=new GregorianCalendar();
            if (c.get(c.DAY_OF_MONTH)==13 && c.get(c.DAY_OF_WEEK)==c.FRIDAY
&& Math.random()<0.1) {
                trans.rotate(Math.random()*Math.PI*2.0, w/2.0, h/2.0);
            } else if (b.width > b.height) {
                // A bug forces us to do the following manually
                trans.translate(w/2.0, h/2.0);
                trans.rotate(-Math.PI/2);
                trans.translate(-h/2.0, -w/2.0);
                pf.setOrientation(PageFormat.LANDSCAPE);
                w=(int)pf.getImageableWidth();
h=(int)pf.getImageableHeight();
            } else
                pf.setOrientation(PageFormat.PORTRAIT);

            double scale=((double)w)/b.width;
            if (scale*b.height > h)
                scale=((double)h)/b.height;
            trans.scale(scale, scale);
        }
        g.transform(trans);

        comp.paint(g);

        return Printable.PAGE_EXISTS;
    }

    Vector wasBuffered=new Vector();
    // As I mentioned, the component must not contain images. However,
double buffered
    // components are esentially one big image. Therefore we must turn of
all double buffering.
    private void debuffer(Component c) {
        if (c instanceof JComponent) {
            JComponent jc=(JComponent) c;
            if (jc.isDoubleBuffered()) {
                wasBuffered.add(jc);
                jc.setDoubleBuffered(false);
            }
        }
        if (c instanceof Container) {
            Container cont=(Container) c;
            for (int i=0; i<cont.getComponentCount(); i++)
                debuffer(cont.getComponent(i));
        }
    }
    private void rebuffer(Component c) {
        for (int i=0; i<wasBuffered.size(); i++)
            ((JComponent) wasBuffered.elementAt(i)).setDoubleBuffered(true);
    }
}

// I didn't include the other printables...
public class ComponentPrinter  {
    public static void print(Component c) { hardcopy(c); }
    public static void hardcopy(Component c) { new HardPrintable(c); }
    public static void softcopy(Component c) { new SoftPrintable(c); }
    public static void rastercopy(Component c) { new PreviewPrintable(c); }
    public static void preview(Component c) {
        JFrame w=new JFrame("Test");
        JLabel jl=new JLabel(new ImageIcon(PreviewPrintable.makeImage(c,
468, 648)));
        w.getContentPane().add(jl, BorderLayout.CENTER);
        w.pack();
        w.setVisible(true);
    }
}