Re: printing

You need to convert from screen resolution (96/inch on my machine) to page resolution (72/inch) this ratio is 1.33 which may account for what you're seeing.

At 08:44 PM 7/1/2001, Tennessee Leeuwenburg wrote:
>I think the problem with my printing relates to some kind of incorrect measurement of the printable image size.
>
>I find that (usually) the full height of my image is printed, but only about 2/3 of the width, with the other 1/3 being clipped. When I get a 1/2 size version of my image, and print that instead, I can see everything - but of course the image is half the size I want it to be. I can't work out why it is that I'm not getting the right numbers for my printable image width. Here's my code. If you can help, thanks!
>
>-T
>
>public class PrintImageMenuItem extends JMenuItem
>implements ActionListener, Printable {
>
> // Stuff for building the image
> BeanContext mapHandler = null;
> PrintSunJPEGFormatter formatter = null;
>
> // Stuff for printing
> private final double inch = 72;
> PrinterJob printJob = PrinterJob.getPrinterJob();
>
> /**
> * @param String A String that will be displayed when this
> * menuitem is shown in GUI
> * @param AbstractImageFormatter A formatter that knows how to
> * generate an image from MapBean.
> */
> public PrintImageMenuItem(String display, PrintSunJPEGFormatter in_formatter) {
> this(display);
> formatter = in_formatter;
> }
>
> public PrintImageMenuItem(String display) {
> super(display);
> addActionListener(this);
> printJob.setPrintable(this);
> }
>
> public int print(Graphics g, PageFormat pageFormat, int pageIndex) {
>
> System.out.println("trying really hard");
>
> int i;
> Graphics2D g2d = (Graphics2D)g;
>
> //// Print out maps in landscape
> pageFormat.setOrientation(PageFormat.LANDSCAPE);
>
> if(pageIndex == 0 ) {
>
> Iterator it = mapHandler.iterator();
> Object someObj;
>
> while(it.hasNext()) {
> someObj = it.next();
> if(someObj instanceof MapBean) {
>
>
> if(formatter == null) { return 0; }
>
> // Get the printable area of the page
> g.translate((int)pageFormat.getImageableX(), (int)pageFormat.getImageableY());
> int pageWidth = (int)pageFormat.getImageableWidth();
> int pageHeight = (int)pageFormat.getImageableHeight();
>
> // Get the image
> Image image = formatter.getScaledActualImageFromMapBean((MapBean)someObj, (int)(pageWidth * 1), (int)(pageHeight * 1));
> int imageWidth = image.getWidth(this);
> int imageHeight = image.getHeight(this);
>
> System.out.println(pageWidth + ", " + imageWidth);
> System.out.println(pageHeight + ", " + imageHeight);
> System.out.println((int)pageFormat.getWidth() + ", " + (int)pageFormat.getHeight());
>
>/*
> // Scalars etc
> int nCol = Math.max( (int)Math.ceil( (double)imageWidth/pageWidth), 1);
> int nRow = Math.max( (int)Math.ceil( (double)imageHeight/pageHeight), 1);
>
> int iCol = pageIndex % nCol;
> int iRow = pageIndex / nCol;
> int x = iCol * pageWidth;
> int y = iRow * pageHeight;
> int wImage = Math.min(pageWidth, imageWidth - x);
> int hImage = Math.min(pageHeight, imageHeight - y);
>
> // Stuff for drawing the image
> g2d.drawImage (
> image,
> 0, // initial co-ordinates
> 0, // initial co-ordinates
> wImage,
> hImage,
> x,
> y,
> x + wImage,
> y + hImage,
> this
> );
>*/
>
> // Stuff for drawing the image
> g2d.drawImage (image,
> 0, // initial co-ordinates
> 0, // initial co-ordinates
> imageWidth, // size of viewing window
> imageHeight,
> this
> );
>
> }
> }
>
> return(PAGE_EXISTS);
>
> }
> else { return (NO_SUCH_PAGE); }
>
> }
>
> /** This method will initiate a print */
> public void actionPerformed(ActionEvent ae) {
>
> // If there's nothing to print, don't try
> if(mapHandler == null) {
> System.out.println("null");
> return; }
>
> System.out.println("trying");
>
> if(printJob.printDialog()) {
> System.out.println("check this out");
> try { printJob.print(); }
> catch (Exception e) { e.printStackTrace(); }
> }
> }
>
> /** Method to set the map handler */
> public void setMapHandler(BeanContext in_mapHandler) {
> System.out.println("setting maphandler");
> Debug.message("printimagemenuitem","Setting mapHandler " + in_mapHandler);
> mapHandler= in_mapHandler;
> }
>
>}
>==============================================
>This email contains information which may be useful. The views
>expressed within may or may not be the views of the author.
>==============================================
>
>-Tennessee Leeuwenburg, Silver Stream Pty Ltd
>0418 300 881
>
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