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package Apps;
import java.awt.*;
import java.awt.geom.*;
import javax.swing.*;
import java.awt.print.*;
/**
* Utility class for printing swing components.
*
* @author <a href="http://www.sics.se/~martins">Martin Svensson</a>
* @version 1.0
*/
public class PrintUtilities implements Printable {
private Component component;
private int method;
float scale;
/**
* Prints a component without any rescaling.
*
*/
public final static int AS_IS = 0;
/**
* Scales a component to fit the book format.
*
*/
public final static int SCALE_TO_FIT = 1;
/**
* Scale so that the component will fit on one output page.
*
*/
public final static int BOOK_HEIGHT = 2;
/**
* Scale so that the width is best fitted.
*
*/
public final static int BOOK_WIDTH = 3;
/**
* Scale to Perfect A4.
*
*/
public final static int A4_LANDS = 4;
/**
* Print a componet using a particular scaling method
*
* @param c the <code>Component</code> to print
* @param method the scaling method to use
*/
public static final int PORTRAIT = PageFormat.PORTRAIT,
PAYSAGE = PageFormat.LANDSCAPE;
private boolean showDialog = true;
public int orientation = 0;
public static void printComponent(Component c, int method) {
new PrintUtilities(c, method).print();
}
private PrintUtilities(Component component, int method) {
this.component = component;
this.method = method;
}
private Book makeBook(PageFormat pf){
pf.setOrientation(PageFormat.LANDSCAPE);
Book book = new Book();
book.append(this, pf, getPageCount(pf)-1);
System.out.println(book.getNumberOfPages());
return book;
}
private void print(){
PrinterJob printJob = PrinterJob.getPrinterJob();
PageFormat pf = printJob.defaultPage();
scale = calculateScale(pf);
printJob.setPageable(makeBook(pf));
if (printJob.printDialog())
try{
printJob.print();
}
catch(PrinterException pe){System.out.println("Error printing: " + pe);}
}
private float calculateScale(PageFormat pf){
float scl = 1f;
switch(method){
case BOOK_HEIGHT:
scl = (float) pf.getImageableHeight()/component.getSize().height;
break;
/*case BOOK_WIDTH:
scl = (float) pf.getImageableWidth()/component.getSize().width;
break;*/
case SCALE_TO_FIT:
scl = (float) Math.min(pf.getImageableWidth()/component.getSize().width,
pf.getImageableHeight()/component.getSize().height);
break;
case A4_LANDS:
scl = (float) 220/500;//pf.getImageableWidth()/component.getSize().width;//=0.40
break;
case AS_IS:
scl = 1; //no scaling
break;
}
if(scl > 1)
scl = 1; //we only resize the component if it is to large
return scl;
}
private int getPageCount(PageFormat pf){
//calculate scale:
if(method == BOOK_HEIGHT){
return (int) Math.ceil((220/500));//scale*component.getSize().width)/pf.getImageableWidth());//0.40*1472/537
}
/*else if(method == BOOK_WIDTH){
return (int) Math.ceil((scale*component.getSize().height)/pf.getImageableHeight());
}*/
else if(method == A4_LANDS){
return (int) Math.ceil((scale*component.getSize().width)/350);
}
else{ //for the other two methods only one page will be printed
return 1;
}
}
/**
* Prints a page.
*
* @param g contains what is to be printed
* @param pf the format of the output page (i.e., A4, letter,...)
* @param page number
* @return PAGE_EXISTS
*/
public int print(Graphics g, PageFormat pf, int page) {
if (page >= getPageCount(pf)){
return(NO_SUCH_PAGE);
}
else{
Graphics2D g2 = (Graphics2D)g;
g2.translate(pf.getImageableX(), pf.getImageableY());
g2.clip(new Rectangle2D.Double(0,0,pf.getImageableWidth(), pf.getImageableHeight()));
//translate and scale:
switch(method){
/* case BOOK_WIDTH:
g2.translate(0, -page*pf.getImageableHeight());
break;*/
case BOOK_HEIGHT:
g2.translate(-page*pf.getImageableWidth(),0);
break;
case A4_LANDS:
g2.translate(0, -page*pf.getImageableHeight());
break;
}
g2.scale(scale, scale);
//finally do the printing:
disableDoubleBuffering(component);
component.paint(g2);
enableDoubleBuffering(component);
return(PAGE_EXISTS);
}
}
/**
* The speed and quality of printing suffers dramatically if
* any of the containers have double buffering turned on.
* So this turns if off globally.
*
* @param c Componet to be printed
* @see #enableDoubleBuffering
*/
public static void disableDoubleBuffering(Component c) {
RepaintManager currentManager = RepaintManager.currentManager(c);
currentManager.setDoubleBufferingEnabled(false);
}
/**
* Re-enables double buffering globally.
*
* @param c the component to reenable
*/
public static void enableDoubleBuffering(Component c) {
RepaintManager currentManager = RepaintManager.currentManager(c);
currentManager.setDoubleBufferingEnabled(true);
}
} |
Impression JFrame sur A4 en paysage
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