printtext.java~3~

串口的经典实例

package want;

import   java.awt.*;
import   java.awt.font.*;
import   java.awt.geom.*;
import   java.awt.print.*;
import   java.text.*;
 /**
 *   The   PrintText   application   expands   on   the
 *   PrintExample   application   in   that   it   images
 *   text   on   to   the   single   page   printed.
 */
public   class   PrintText   implements   Printable   {
 /**
 *   The   text   to   be   printed.
 */
private   static   final   String   mText   =
             "Four   score   and   seven   years   ago   our   fathers   brought   forth   on   this   "
             + "continent   a   new   nation,   conceived   in   liberty   and   dedicated   to   the   "
             + "proposition   that   all   men   are   created   equal.   Now   we   are   engaged   in   "
             + "a   great   civil   war,   testing   whether   that   nation   or   any   nation   so   "
             + "conceived   and   so   dedicated   can   long   endure.   We   are   met   on   a   great   "
             + "battlefield   of   that   war.   We   have   come   to   dedicate   a   portion   of   "
             + "that   field   as   a   final   resting-place   for   those   who   here   gave   their   "
             + "lives   that   that   nation   might   live.   It   is   altogether   fitting   and   "
             + "proper   that   we   should   do   this.   But   in   a   larger   sense,   we   cannot   "
             +"dedicate,   we   cannot   consecrate,   we   cannot   hallow   this   ground."
             + "The   brave   men,   living   and   dead   who   struggled   here   have   consecrated   "
             + "it   far   above   our   poor   power   to   add   or   detract.   The   world   will   "
             + "little   note   nor   long   remember   what   we   say   here,   but   it   can   never   "
             + "forget   what   they   did   here.   It   is   for   us   the   living   rather   to   be   "
             + "dedicated   here   to   the   unfinished   work   which   they   who   fought   here   "
             + "have   thus   far   so   nobly   advanced.   It   is   rather   for   us   to   be   here   "
             + "dedicated   to   the   great   task   remaining   before   us--that   from   these   "
             + "honored   dead   we   take   increased   devotion   to   that   cause   for   which   "
             + "they   gave   the   last   full   measure   of   devotion--that   we   here   highly   "
             + "resolve   that   these   dead   shall   not   have   died   in   vain,   that   this   "
             + "nation   under   God   shall   have   a   new   birth   of   freedom,   and   that   "
             + "government   of   the   people,   by   the   people,   for   the   people   shall   "
             + "not   perish   from   the   earth.";
 /**
 *   Our   text   in   a   form   for   which   we   can   obtain   a
 *   AttributedCharacterIterator.
 */
private   static   final   AttributedString   mStyledText   =   new   AttributedString(mText);
 /**
 *   Print   a   single   page   containing   some   sample   text.
 */

 /**
 *   Print   a   page   of   text.
 */
public   int   print(Graphics   g,   PageFormat   format,   int   pageIndex)   {
 /*   We'll   assume   that   Jav2D   is   available.
 */
Graphics2D   g2d   =   (Graphics2D)   g;
 /*   Move   the   origin   from   the   corner   of   the   Paper   to   the   corner
 *   of   the   imageable   area.
 */
 g2d.translate(format.getImageableX(),   format.getImageableY());
 /*   Set   the   text   color.
 */
 g2d.setPaint(Color.black);
 /*   Use   a   LineBreakMeasurer   instance   to   break   our   text   into
 *   lines   that   fit   the   imageable   area   of   the   page.
 */
 Point2D.Float   pen   =   new   Point2D.Float();
 AttributedCharacterIterator   charIterator   =   mStyledText.getIterator();
 LineBreakMeasurer   measurer   =   new   LineBreakMeasurer(charIterator,   g2d.getFontRenderContext());
 float   wrappingWidth   =   (float)   format.getImageableWidth();
 while   (measurer.getPosition()   <   charIterator.getEndIndex())   {
 TextLayout   layout   =   measurer.nextLayout(wrappingWidth);
 pen.y   +=   layout.getAscent();
 float   dx   =   layout.isLeftToRight()?   0   :   (wrappingWidth   -   layout.getAdvance());
 layout.draw(g2d,   pen.x   +   dx,   pen.y);
 pen.y   +=   layout.getDescent()   +   layout.getLeading();
 }
 return   Printable.PAGE_EXISTS;
 }
 }

 /**
 *   Print   a   single   page   containing   some   sample   text.
 */