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1
28 package net.sf.jasperreports.engine.print;
29
30 import java.awt.Graphics  ;
31 import java.awt.Image ;
32 import java.awt.image.BufferedImage ;
33 import java.awt.print.Book ;
34 import java.awt.print.PageFormat ;
35 import java.awt.print.Paper ;
36 import java.awt.print.Printable ;
37 import java.awt.print.PrinterException ;
38 import java.awt.print.PrinterJob ;
39 import java.lang.reflect.InvocationTargetException ;
40 import java.lang.reflect.Method ;
41
42 import net.sf.jasperreports.engine.JRException;
43 import net.sf.jasperreports.engine.JRExporterParameter;
44 import net.sf.jasperreports.engine.JRReport;
45 import net.sf.jasperreports.engine.JasperPrint;
46 import net.sf.jasperreports.engine.export.JRGraphics2DExporter;
47 import net.sf.jasperreports.engine.export.JRGraphics2DExporterParameter;
48 import net.sf.jasperreports.engine.util.JRGraphEnvInitializer;
49
50
51
55 public class JRPrinterAWT implements Printable
56 {
57
58
59
62 private JasperPrint jasperPrint = null;
63 private int pageOffset = 0;
64
65
66
69 protected JRPrinterAWT(JasperPrint jrPrint) throws JRException
70 {
71 JRGraphEnvInitializer.initializeGraphEnv();
72
73 jasperPrint = jrPrint;
74 }
75
76
77
80 public static boolean printPages(
81 JasperPrint jrPrint,
82 int firstPageIndex,
83 int lastPageIndex,
84 boolean withPrintDialog
85 ) throws JRException
86 {
87 JRPrinterAWT printer = new JRPrinterAWT(jrPrint);
88 return printer.printPages(
89 firstPageIndex,
90 lastPageIndex,
91 withPrintDialog
92 );
93 }
94
95
96
99 public static Image printPageToImage(
100 JasperPrint jrPrint,
101 int pageIndex,
102 float zoom
103 ) throws JRException
104 {
105 JRPrinterAWT printer = new JRPrinterAWT(jrPrint);
106 return printer.printPageToImage(pageIndex, zoom);
107 }
108
109
110
113 private boolean printPages(
114 int firstPageIndex,
115 int lastPageIndex,
116 boolean withPrintDialog
117 ) throws JRException
118 {
119 boolean isOK = true;
120
121 if (
122 firstPageIndex < 0 ||
123 firstPageIndex > lastPageIndex ||
124 lastPageIndex >= jasperPrint.getPages().size()
125 )
126 {
127 throw new JRException(
128 "Invalid page index range : " +
129 firstPageIndex + " - " +
130 lastPageIndex + " of " +
131 jasperPrint.getPages().size()
132 );
133 }
134
135 pageOffset = firstPageIndex;
136
137 PrinterJob printJob = PrinterJob.getPrinterJob();
138
139 initPrinterJobFields(printJob);
141
142 PageFormat pageFormat = printJob.defaultPage();
143 Paper paper = pageFormat.getPaper();
144
145 printJob.setJobName("JasperReports - " + jasperPrint.getName());
146
147 switch (jasperPrint.getOrientation())
148 {
149 case JRReport.ORIENTATION_LANDSCAPE :
150 {
151 pageFormat.setOrientation(PageFormat.LANDSCAPE);
152 paper.setSize(jasperPrint.getPageHeight(), jasperPrint.getPageWidth());
153 paper.setImageableArea(
154 0,
155 0,
156 jasperPrint.getPageHeight(),
157 jasperPrint.getPageWidth()
158 );
159 break;
160 }
161 case JRReport.ORIENTATION_PORTRAIT :
162 default :
163 {
164 pageFormat.setOrientation(PageFormat.PORTRAIT);
165 paper.setSize(jasperPrint.getPageWidth(), jasperPrint.getPageHeight());
166 paper.setImageableArea(
167 0,
168 0,
169 jasperPrint.getPageWidth(),
170 jasperPrint.getPageHeight()
171 );
172 }
173 }
174
175 pageFormat.setPaper(paper);
176
177 Book book = new Book ();
178 book.append(this, pageFormat, lastPageIndex - firstPageIndex + 1);
179 printJob.setPageable(book);
180 try
181 {
182 if (withPrintDialog)
183 {
184 if (printJob.printDialog())
185 {
186 printJob.print();
187 }
188 else
189 {
190 isOK = false;
191 }
192 }
193 else
194 {
195 printJob.print();
196 }
197 }
198 catch (Exception ex)
199 {
200 throw new JRException("Error printing report.", ex);
201 }
202
203 return isOK;
204 }
205
206
207
210 public int print(Graphics graphics, PageFormat pageFormat, int pageIndex) throws PrinterException
211 {
212 if (Thread.currentThread().isInterrupted())
213 {
214 throw new PrinterException ("Current thread interrupted.");
215 }
216
217 pageIndex += pageOffset;
218
219 if ( pageIndex < 0 || pageIndex >= jasperPrint.getPages().size() )
220 {
221 return Printable.NO_SUCH_PAGE;
222 }
223
224 try
225 {
226 JRGraphics2DExporter exporter = new JRGraphics2DExporter();
227 exporter.setParameter(JRExporterParameter.JASPER_PRINT, this.jasperPrint);
228 exporter.setParameter(JRGraphics2DExporterParameter.GRAPHICS_2D, graphics);
229 exporter.setParameter(JRExporterParameter.PAGE_INDEX, new Integer (pageIndex));
230 exporter.exportReport();
231 }
232 catch (JRException e)
233 {
234 e.printStackTrace();
235 throw new PrinterException (e.getMessage());
236 }
237
238 return Printable.PAGE_EXISTS;
239 }
240
241
242
245 private Image printPageToImage(int pageIndex, float zoom) throws JRException
246 {
247 Image pageImage = new BufferedImage (
248 (int)(jasperPrint.getPageWidth() * zoom) + 1,
249 (int)(jasperPrint.getPageHeight() * zoom) + 1,
250 BufferedImage.TYPE_INT_RGB
251 );
252
253 JRGraphics2DExporter exporter = new JRGraphics2DExporter();
254 exporter.setParameter(JRExporterParameter.JASPER_PRINT, this.jasperPrint);
255 exporter.setParameter(JRGraphics2DExporterParameter.GRAPHICS_2D, pageImage.getGraphics());
256 exporter.setParameter(JRExporterParameter.PAGE_INDEX, new Integer (pageIndex));
257 exporter.setParameter(JRGraphics2DExporterParameter.ZOOM_RATIO, new Float (zoom));
258 exporter.exportReport();
259
260 return pageImage;
261 }
262
263
264
268 public static void initPrinterJobFields(PrinterJob job)
269 {
270 Class klass = job.getClass();
271 try {
272 Class printServiceClass = Class.forName("javax.print.PrintService");
273 Method method = klass.getMethod("getPrintService", (Class [])null);
274 Object printService = method.invoke(job, (Object [])null);
275 method = klass.getMethod("setPrintService", new Class []{printServiceClass});
276 method.invoke(job, new Object [] {printService});
277 } catch (NoSuchMethodException e) {
278 } catch (IllegalAccessException e) {
279 } catch (InvocationTargetException e) {
280 } catch (ClassNotFoundException e) {
281 }
282 }
283
284
285 public static long getImageSize(JasperPrint jasperPrint, float zoom)
286 {
287 int width = (int) (jasperPrint.getPageWidth() * zoom) + 1;
288 int height = (int) (jasperPrint.getPageHeight() * zoom) + 1;
289 return width * height;
290 }
291 }
292 |
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