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| public class TablePrinter implements Printable {
private JTable table;
private HeadBandPrintable header;
private HeadBandPrintable footer;
private Printable tablePrintable;
private PrintMode printMode;
private int lastPage;
private Insets tableInsets;
public TablePrinter(JTable table, PrintMode printMode, HeadBandPrintable header, HeadBandPrintable footer) {
this(table, printMode, header, footer, null);
}
public TablePrinter(JTable table, PrintMode printMode, HeadBandPrintable header, HeadBandPrintable footer, int marginh, int marginv) {
this(table, printMode, header, footer, new Insets(marginv, marginh, marginv, marginh));
}
public TablePrinter(JTable table, PrintMode printMode, HeadBandPrintable header, HeadBandPrintable footer, Insets tableInsets) {
this.table=table;
this.header=header;
this.footer=footer;
this.printMode=printMode;
this.tableInsets=tableInsets==null?new Insets(0,0,0,0):tableInsets;
}
public void reset() {
tablePrintable=null;
}
public int print(Graphics graphics, PageFormat pageFormat, int pageIndex) throws PrinterException {
if ( tablePrintable==null || pageIndex<lastPage) {
tablePrintable = this.table.getPrintable(printMode, null, null);
}
double headerHeight;
if ( header!=null ) {
headerHeight = Math.max(0, header.getHeight());
}
else {
headerHeight = 0;
}
double footerHeight;
if ( footer!=null ) {
footerHeight = Math.max(0, footer.getHeight());
}
else {
footerHeight = 0;
}
PageFormat tablePageFormat;
if ( headerHeight!=0 || footerHeight!=0 || tableInsets.top!=0 || tableInsets.bottom!=0 || tableInsets.left!=0 || tableInsets.right!=0 ) {
tablePageFormat = new HeaderFooterPageFormat(pageFormat, headerHeight, footerHeight, tableInsets);
}
else {
tablePageFormat = pageFormat;
}
int page = tablePrintable.print(graphics, tablePageFormat, pageIndex);
if (page==Printable.PAGE_EXISTS) {
if ( header!=null ) {
HeaderFooterPageFormat headerPageFormat = new HeaderFooterPageFormat(pageFormat, 0, tablePageFormat.getImageableHeight()+footerHeight+tableInsets.top+tableInsets.bottom,null);
header.print(graphics, headerPageFormat, pageIndex);
}
if ( footer!=null ) {
HeaderFooterPageFormat footerPageFormat = new HeaderFooterPageFormat(pageFormat, tablePageFormat.getImageableHeight()+headerHeight+tableInsets.top+tableInsets.bottom, 0,null);
footer.print(graphics, footerPageFormat, pageIndex);
}
}
return page;
}
private static class HeaderFooterPageFormat extends PageFormat {
private PageFormat pageFormat;
private double headerHeight;
private double footerHeight;
private Rectangle2D.Double imageable;
private Insets insets;
private boolean withInsets;
public HeaderFooterPageFormat(PageFormat pageFormat, double headerHeight, double footerHeight, Insets insets) throws PrinterException {
this.pageFormat = pageFormat;
this.headerHeight = headerHeight;
this.footerHeight = footerHeight;
this.insets = insets==null?new Insets(0,0,0,0):insets;
this.withInsets = insets!=null;
computeImageable();
}
private void computeImageable() throws PrinterException {
double height = this.pageFormat.getImageableHeight()-headerHeight-footerHeight-insets.top-insets.bottom;
double width = this.pageFormat.getImageableWidth()-insets.left-insets.right;
if (height<0 || width<0 ) {
throw new PrinterException("Not enough space to print - format: " + this.pageFormat.getImageableHeight() + " - header: " + headerHeight + " - footer: " + footerHeight + (withInsets?(" margins: " + insets):""));
}
imageable = new Rectangle2D.Double(pageFormat.getImageableX()+insets.left,
pageFormat.getImageableY()+headerHeight+insets.top, pageFormat.getImageableWidth()-insets.left-insets.right, height);
}
@Override
public double getHeight() {
return pageFormat.getHeight();
}
@Override
public double getWidth() {
return pageFormat.getWidth();
}
@Override
public Paper getPaper() {
return pageFormat.getPaper();
}
@Override
public int getOrientation() {
return pageFormat.getOrientation();
}
@Override
public double[] getMatrix() {
return pageFormat.getMatrix();
}
@Override
public double getImageableX() {
return imageable.getX();
}
@Override
public double getImageableWidth() {
return imageable.getWidth();
}
@Override
public double getImageableY() {
return imageable.getY();
}
@Override
public double getImageableHeight() {
return imageable.getHeight();
}
@Override
public void setOrientation(int orientation) throws IllegalArgumentException {
pageFormat.setOrientation(orientation);
try {
computeImageable();
} catch (PrinterException e) {
throw new RuntimeException(e);
}
}
@Override
public void setPaper(Paper paper) {
pageFormat.setPaper(paper);
try {
computeImageable();
} catch (PrinterException e) {
throw new RuntimeException(e);
}
}
public PageFormat getPageFormat() {
return pageFormat;
}
}
public static interface HeadBandPrintable extends Printable {
double getHeight();
int print(Graphics graphics, PageFormat pageFormat, int pageIndex)
throws PrinterException;
}
} |