Java Printing Example (string wrapping problem)

1. Printing examples

The key to Java printing is the starting coordinates (X,Y) of each drawing function g2.drawstring (str, x, y)

Import Java.awt.BasicStroke;
Import Java.awt.Color;
Import java.awt.Component;
Import Java.awt.Font;
Import Java.awt.Graphics;
Import Java.awt.Graphics2D;
Import Java.awt.Image;
Import Java.awt.Toolkit;
Import Java.awt.print.Book;
Import Java.awt.print.PageFormat;
Import Java.awt.print.Paper;
Import java.awt.print.Printable;
Import java.awt.print.PrinterException;


Import Java.awt.print.PrinterJob; /** * Print pictures and text * * @author WFG */public class Printsalesslip implements printable {/**//** * @param Gra Phic indicates the printed graphics environment * @param * Pageformat indicates the printed page format (the page size is measured in dots, with 1 points being 1/72 for 1 of the elite, and 1 inches for 25.4 millimeters).  A4 paper is approximately 595x842 point) * @param pageindex specified page number (80 mm: 226.7 point, 58 mm: 164.4) * * public int print (Graphics gra, Pageformat pf, int
		PageIndex) throws PrinterException {Component c = null;
		Print string//convert to graphics2d graphics2d g2 = (graphics2d) GRA;
		Set the print color to Black g2.setcolor (Color.Black); Print start coordinate double x = Pf.getimageablex ()//To return the imageable region of the Paper object associated with this PageformatThe x-coordinate of the upper-left point.
		Double y = Pf.getimageabley (); Switch (pageIndex) {case 0://Set the print font (font name, style and point size) (font name can be physical or logical name)//Five font families defined by the Java platform: Serif, Sansserif, monospace
			D, Dialog and dialoginput font font = new Font ("Song Body", Font.plain, 12);
			G2.setfont (font);//setting Fonts//Basicstroke bs_3=new Basicstroke (0.5f);
			Float[] Dash1 = {2.0f};
			Sets the properties of the print line. 1. Line width 2, 3, do not know, 4, blank width, 5, dashed width, 6, offset g2.setstroke (new Basicstroke (0.5f, Basicstroke.cap_butt, Basicstroke.join_mi
			TER, 2.0f, Dash1, 0.0f);
			G2.setstroke (Bs_3)//Set line width float fontHeigth1 = font.getsize2d ();
 
			
			The baseline (lower right) of the graphics2d Direct output//first character is located in the user space at (x, y) position//g2.drawline (10,10,200,300);
			String str1 = "xxxxxxxxxxxxxxxxxx";
			G2.drawstring (str1, (int) x, (int) y + fontHeigth1);
			String str2 = "139";
			
			G2.drawstring (str2, (int) x, (int) y + fontheigth1*2+10);
			Font font2 = new Font ("Song Body", Font.plain, 9); G2.setfont (Font2)//Set Font G2.setstroke (new Basicstroke (0.5f, Basicstroke.cap_buTT, Basicstroke.join_miter, 2.0f, Dash1, 0.0f);
			
			float fontHeigth2 = (int) font.getsize2d ();
			
			int tempheight = (int) (FONTHEIGTH1*2+10);
			String STR3 = "On-line, row-and-row sympathetic";
			G2.drawstring (STR3, (int) x, (int) y + fontheigth2+10 +tempheight);
			String STR4 = "Xxxxxxxxxxxxxx Hee XI XI";
			G2.drawstring (STR4, (int) x, (int) y + fontheigth2*2+10 +tempheight);
			String STR5 = "New line row row row line";
			
			G2.drawstring (STR5, (int) x, (int) y + fontheigth2*3+10 +tempheight);
			String STR6 = "to rest and rest";
			G2.drawstring (STR6, (int) x, (int) y + fontheigth2*4+20 +tempheight);
			String STR7 = "xxxxxxxx";
			G2.drawstring (STR7, (int) x, (int) y + fontheigth2*5+20 +tempheight);
			String str8 = "Xxxxxxxxxxxxxxxxx";

			
			G2.drawstring (str8, (int) x, (int) y + fontheigth2*6+20 +tempheight);
			Image src = Toolkit.getdefaulttoolkit (). GetImage ("f:/barcode2.jpg"); G2.drawimage (SRC, (int) x, (int) (Y + fontheigth2*6+50 +tempheight+10), 150,70, c);//print barcode int img_height = Src.getheigh
			T (c); int Img_width= Src.getwidth (c);
		return page_exists;
		Default:return No_such_page;
		} public static void Main (string[] args) {//popular understanding is the book, the Document books = new ();
		Set to vertical hit Pageformat pf = new Pageformat ();
		Pf.setorientation (pageformat.portrait); 
		The/*static Int landscape origin is located at the lower left of the paper, the direction of X is from bottom to top, and Y is from left to right. 
		The static int portrait The origin at the top left of the paper, X points to the right, and y points below. The static int Reverse_landscape origin is at the top right of the paper, and the direction of X is from top to bottom, and Y is from right to left. *///(page size is measured in dots, 1 points are 1 inches 1/72, 1 inches is 25.4 mm.) A4 paper is approximately 595x842 point)//Set the blank margins and printable area of the page by paper.
		Must match the actual printed paper size.
Paper p = new Paper ();
		System.out.println ("1 High:" +p.getheight () + "-Wide:" +p.getwidth ()); 
		P.setsize (227, 300);//paper size sets the width and height of this Paper object, which indicates the properties of the page to be printed (10, 10, 227, 300);//sets the imageable area for this Paper.
		A4 (595 X 842) Sets the print area, in fact the 0,0 should be 72, 72, because A4 paper's default x,y margin is the System.out.println ("2 High:" +p.getheight () + "-Wide:" +p.getwidth ());
		Pf.setpaper (P); Add Pageformat and printable to the book to form a page book.append (new Printsalesslip (), PF);
		Get Print Service object PrinterJob job = Printerjob.getprinterjob ();

		Sets the Print class job.setpageable (book);
			try {//You can display the print dialog with PrintDialog, print after the user confirms, or you can print a Boolean a=job.printdialog () directly;
				if (a) {//system.out.println (a); 
			Job.print ();
		} catch (Exception e) {e.printstacktrace ();
 }
	}

}

2. String wrapping in Print

Train of thought: according to the pixel to determine whether to change lines, according to string length line words will have English and man problem, width is different.

						int strpixelwidth = metrics.stringwidth (str); String length (pixels) str the string int linesize = (int) Math.ceil (strpixelwidth*1.0/width) to be printed;//How many rows//fontmetrics metrics = n
						EW FontMetrics (font) {};  
						Rectangle2D bounds = metrics.getstringbounds (str, NULL); 
						int widthinpixels = (int) bounds.getwidth ();
						System.out.println (strpixelwidth+ "---:");
							if (Width < strpixelwidth) {//page width (width) is less than the length of the string linenum = (int) math.ceil (strpixelwidth*1.0/linesize);
							 StringBuilder SB =new StringBuilder ();//store string int j=0 for each row;
							 int tempstart = 0; String tempstrs[] =new string[linesize];//for each row after the store is wrapped for (int i1 =0;i1<str.length (); i1++) {Char ch = s
								Tr.charat (I1);
								 Sb.append (CH);  
								 Rectangle2D bounds2 = Metrics.getstringbounds (sb.tostring (), NULL); 
								 int tempstrpi1exlwi1dth = (int) bounds2.getwidth (); if (Tempstrpi1exlwi1dth > width) {tempstrs[j++] = str.substring (TempstarT,I1);
									 Tempstart = I1;
									 Sb.delete (0, Sb.length ());
								 Sb.append (CH);
								 } if (I1 = = Str.length ()-1) {//last line tempstrs[j] = str.substring (Tempstart); }
							}