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POJava print - page
 

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  1. POJava print - page
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    <p>My application allows the user to print the screen content which is made of several Swing controls (images, texts, etc.) - the printed panel it self is long (several pages) and the width about 600pixels.</p> <p>Since I know exactly each page layout (I put the exact number of images and components) on each page (the total number of images is dynamic), I can calculate exactly how many pages I will need for the print.</p> <p>I've implemented the Printable interface as follows:</p> <pre><code>public int print(Graphics g, PageFormat pf, int pageIndex) throws PrinterException { Graphics2D g2 = (Graphics2D) g; g2.setColor(Color.BLACK); //set default foreground color to black RepaintManager.currentManager(this).setDoubleBufferingEnabled(false); Dimension d = this.getSize(); //get size of document double panelWidth = d.width; //width in pixels double panelHeight = d.height; //height in pixels double pageHeight = pf.getImageableHeight(); //height of printer page double pageWidth = pf.getImageableWidth(); //width of printer page double scale = pageHeight / panelHeight; int totalNumPages = (int) Math.ceil(scale * panelWidth / pageWidth); if (pageIndex &gt;= totalNumPages) { return Printable.NO_SUCH_PAGE; } g2.translate(pf.getImageableX(), pf.getImageableY()); g2.translate(0f, -pageIndex * pageHeight); g2.scale(scale, scale); this.paint(g2); return Printable.PAGE_EXISTS; } </code></pre> <p>It seems that everything works fine. Since I don't have a printer, I've tested it using a PDF printer and on several clients printer - and the results were good.</p> <p>However, on one of my user's printer - it seems that something in not working with the calculation, since it breaks the page in the middle of the images.</p> <p>Is there a more elegant way to do these calculations ? Can I add instead a "page break" notification somewhere ?</p> <p>Thanks</p>
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    1. USJonathan Feinberg
    1. USRanch
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    1. COPlease format the code for better readability.
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      1. POJava print - page
      1. USmichael.kebe
 

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