summaryrefslogtreecommitdiff
path: root/libjava/classpath/gnu/java/awt/print/JavaPrinterGraphics.java
blob: 64d197cd00f779607107ef0582bbc54d496c1e6b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
/* JavaPrinterGraphics.java -- AWT printer rendering class.
   Copyright (C) 2006  Free Software Foundation, Inc.

This file is part of GNU Classpath.

GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

GNU Classpath is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU Classpath; see the file COPYING.  If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA.

Linking this library statically or dynamically with other modules is
making a combined work based on this library.  Thus, the terms and
conditions of the GNU General Public License cover the whole
combination.

As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent
modules, and to copy and distribute the resulting executable under
terms of your choice, provided that you also meet, for each linked
independent module, the terms and conditions of the license of that
module.  An independent module is a module which is not derived from
or based on this library.  If you modify this library, you may extend
this exception to your version of the library, but you are not
obligated to do so.  If you do not wish to do so, delete this
exception statement from your version. */

package gnu.java.awt.print;

import gnu.java.awt.peer.gtk.CairoSurface;

import java.awt.Color;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.Rectangle;
import java.awt.Shape;
import java.awt.geom.AffineTransform;
import java.awt.image.ImageObserver;
import java.awt.image.PixelGrabber;
import java.awt.print.PageFormat;
import java.awt.print.Pageable;
import java.awt.print.Paper;
import java.awt.print.Printable;
import java.awt.print.PrinterException;
import java.awt.print.PrinterGraphics;
import java.awt.print.PrinterJob;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.text.AttributedCharacterIterator;

/**
 * Graphics context to draw to PostScript.
 *
 * @author Sven de Marothy
 */
public class JavaPrinterGraphics extends Graphics implements PrinterGraphics
{

  /**
   * The used graphics context.
   */
  private Graphics g;

  /**
   * The associated printer job.
   */
  private PrinterJob printerJob;

  /**
   * Rendering resolution
   */
  private static final double DPI = 72.0;

  /**
   * Rendered image size.
   */
  private int xSize, ySize;

  /**
   * The image to render to.
   */
  private Image image;

  public JavaPrinterGraphics( PrinterJob printerJob )
  {
    this.printerJob = printerJob;
  }

  /**
   * Spool a document to PostScript.
   * If Pageable is non-null, it will print that, otherwise it will use
   * the supplied printable and pageFormat.
   */
  public SpooledDocument spoolPostScript(Printable printable,
                                         PageFormat pageFormat,
                                         Pageable pageable)
    throws PrinterException
  {
    try
      {
        // spool to a temporary file
        File temp = File.createTempFile("cpspool", ".ps");
        temp.deleteOnExit();

        PrintWriter out = new PrintWriter
          (new BufferedWriter
            (new OutputStreamWriter
             (new FileOutputStream(temp), "ISO8859_1"), 1000000));

        writePSHeader(out);

        if(pageable != null)
          {
            for(int index = 0; index < pageable.getNumberOfPages(); index++)
              spoolPage(out, pageable.getPrintable(index),
                        pageable.getPageFormat(index), index);
          }
        else
          {
            int index = 0;
            while(spoolPage(out, printable, pageFormat, index++) ==
                  Printable.PAGE_EXISTS)
              ;
          }
         out.println("%%Trailer");
         out.println("%%EOF");
         out.close();
         return new SpooledDocument( temp );
       }
    catch (IOException e)
      {
        PrinterException pe = new PrinterException();
        pe.initCause(e);
        throw pe;
      }
  }

  /**
   * Spools a single page, returns NO_SUCH_PAGE unsuccessful,
   * PAGE_EXISTS if it was.
   */
  public int spoolPage(PrintWriter out,
                       Printable printable,
                       PageFormat pageFormat,
                       int index) throws IOException, PrinterException
  {
    initImage( pageFormat );
    if(printable.print(this, pageFormat, index) == Printable.NO_SUCH_PAGE)
      return Printable.NO_SUCH_PAGE;
    g.dispose();
    g = null;
    writePage( out, pageFormat );
    return Printable.PAGE_EXISTS;
  }

  private void initImage(PageFormat pageFormat)
  {
    // Create a really big image and draw to that.
    xSize = (int)(DPI*pageFormat.getWidth()/72.0);
    ySize = (int)(DPI*pageFormat.getHeight()/72.0);

    // Swap X and Y sizes if it's a Landscape page.
    if( pageFormat.getOrientation() != PageFormat.PORTRAIT )
      {
        int t = xSize;
        xSize = ySize;
        ySize = t;
      }

    // FIXME: This should at least be BufferedImage.
    // Fix once we have a working B.I.
    // Graphics2D should also be supported of course.
    image = CairoSurface.getBufferedImage(xSize, ySize);

    g = image.getGraphics();
    setColor(Color.white);
    fillRect(0, 0, xSize, ySize);
    setColor(Color.black);
  }

  private void writePSHeader(PrintWriter out)
  {
    out.println("%!PS-Adobe-3.0");
    out.println("%%Title: "+printerJob.getJobName());
    out.println("%%Creator: GNU Classpath ");
    out.println("%%DocumentData: Clean8Bit");

    out.println("%%DocumentNeededResources: font Times-Roman Helvetica Courier");
    //    out.println("%%Pages: "+);  // FIXME # pages.
    out.println("%%EndComments");

    out.println("%%BeginProlog");
    out.println("%%EndProlog");
    out.println("%%BeginSetup");

    // FIXME: Paper name
    // E.g. "A4" "Letter"
    //    out.println("%%BeginFeature: *PageSize A4");

    out.println("%%EndFeature");

    out.println("%%EndSetup");

    //    out.println("%%Page: 1 1");
  }

  private void writePage(PrintWriter out, PageFormat pageFormat)
  {
    out.println("%%BeginPageSetup");

    Paper p = pageFormat.getPaper();
    double pWidth = p.getWidth();
    double pHeight = p.getHeight();

    if( pageFormat.getOrientation() == PageFormat.PORTRAIT )
      out.println( "%%Orientation: Portrait" );
    else
      {
        out.println( "%%Orientation: Landscape" );
        double t = pWidth;
        pWidth = pHeight;
        pHeight = t;
      }

    out.println("gsave % first save");

    // 595x842; 612x792 respectively
    out.println("<< /PageSize [" +pWidth + " "+pHeight+ "] >> setpagedevice");

    // invert the Y axis so that we get screen-like coordinates instead.
    AffineTransform pageTransform = new AffineTransform();
    if( pageFormat.getOrientation() == PageFormat.REVERSE_LANDSCAPE )
      {
        pageTransform.translate(pWidth, pHeight);
        pageTransform.scale(-1.0, -1.0);
      }
    concatCTM(out, pageTransform);
    out.println("%%EndPageSetup");

    out.println("gsave");


    // Draw the image
    out.println(xSize+" "+ySize+" 8 [1 0 0 -1 0 "+ySize+" ]");
    out.println("{currentfile 3 string readhexstring pop} bind");
    out.println("false 3 colorimage");
    int[] pixels = new int[xSize * ySize];
    PixelGrabber pg = new PixelGrabber(image, 0, 0, xSize, ySize, pixels, 0, xSize);

    try {
      pg.grabPixels();
    } catch (InterruptedException e) {
      out.println("% Bug getting pixels!");
    }

    int n = 0;
    for (int j = 0; j < ySize; j++) {
      for (int i = 0; i < xSize; i++) {
        out.print( colorTripleHex(pixels[j * xSize + i]) );
        if(((++n)%11) == 0) out.println();
      }
    }

    out.println();
    out.println("%%EOF");
    out.println("grestore");
    out.println("showpage");
  }

  /**
   * Get a nonsperated hex RGB triple, e.g. FFFFFF = white
   */
  private String colorTripleHex(int num){
    String s = "";

    try {
      s = Integer.toHexString( ( num & 0x00FFFFFF ) );
      if( s.length() < 6 )
        {
          s = "000000"+s;
          return s.substring(s.length()-6);
        }
    } catch (Exception e){
      s = "FFFFFF";
    }

    return s;
  }

  private void concatCTM(PrintWriter out, AffineTransform Tx){
    double[] matrixElements = new double[6];
    Tx.getMatrix(matrixElements);

    out.print("[ ");
    for(int i=0;i<6;i++)
      out.print(matrixElements[i]+" ");
    out.println("] concat");
  }

  //-----------------------------------------------------------------------------
  /**
   * PrinterGraphics method - Returns the printer job associated with this object.
   */
  public PrinterJob getPrinterJob()
  {
    return printerJob;
  }

  /**
   * The rest of the methods here are just pass-throughs to g.
   */
  public void clearRect(int x, int y, int width, int height)
  {
    g.clearRect(x, y, width, height);
  }

  public void clipRect(int x, int y, int width, int height)
  {
    g.clipRect(x, y, width, height);
  }

  public void copyArea(int x, int y, int width, int height, int dx, int dy)
  {
    g.copyArea(x, y, width, height, dx, dy);
  }

  public Graphics create()
  {
    return g.create();
  }

  public void dispose()
  {
  }

  public void drawArc(int x, int y, int width, int height, int startAngle,
                      int arcAngle)
  {
    g.drawArc(x, y, width, height, startAngle, arcAngle);
  }

  public boolean drawImage(Image img, int x, int y, Color bgcolor,
                           ImageObserver observer)
  {
    return g.drawImage(img, x, y, bgcolor, observer);
  }

  public boolean drawImage(Image img, int x, int y, ImageObserver observer)
  {
    return g.drawImage(img, x, y, observer);
  }

  public boolean drawImage(Image img, int x, int y, int width, int height,
                           Color bgcolor, ImageObserver observer)
  {
    return g.drawImage(img, x, y, width, height, bgcolor, observer);
  }

  public boolean drawImage(Image img, int x, int y, int width, int height,
                           ImageObserver observer)
  {
    return g.drawImage(img, x, y, width, height, observer);
  }

  public boolean drawImage(Image img, int dx1, int dy1, int dx2, int dy2,
                           int sx1, int sy1, int sx2, int sy2, Color bgcolor,
                           ImageObserver observer)
  {
    return g.drawImage(img, dx1,  dy1,  dx2,  dy2,
                     sx1,  sy1,  sx2,  sy2, bgcolor, observer);
  }

  public boolean drawImage(Image img, int dx1, int dy1, int dx2, int dy2,
                           int sx1, int sy1, int sx2, int sy2, ImageObserver observer)
  {
    return g.drawImage(img, dx1,  dy1,  dx2,  dy2,
                     sx1,  sy1,  sx2,  sy2, observer);
  }

  public void drawLine(int x1, int y1, int x2, int y2)
  {
    g.drawLine(x1, y1, x2, y2);
  }

  public void drawOval(int x, int y, int width, int height)
  {
    g.drawOval(x, y, width, height);
  }

  public void drawPolygon(int[] xPoints, int[] yPoints, int nPoints)
  {
    g.drawPolygon(xPoints, yPoints, nPoints);
  }

  public void drawPolyline(int[] xPoints, int[] yPoints, int nPoints)
  {
    g.drawPolyline(xPoints, yPoints, nPoints);
  }

  public void drawRoundRect(int x, int y, int width, int height,
                            int arcWidth, int arcHeight)
  {
    g.drawRoundRect(x, y, width, height, arcWidth, arcHeight);
  }

  public void drawString(AttributedCharacterIterator iterator, int x, int y)
  {
    g.drawString(iterator, x, y);
  }

  public void drawString(String str, int x, int y)
  {
    g.drawString(str, x, y);
  }

  public void fillArc(int x, int y, int width, int height,
                      int startAngle, int arcAngle)
  {
    g.fillArc(x, y, width, height, startAngle, arcAngle);
  }

  public void fillOval(int x, int y, int width, int height)
  {
    g.fillOval(x, y, width, height);
  }

  public void fillPolygon(int[] xPoints, int[] yPoints, int nPoints)
  {
    g.fillPolygon(xPoints, yPoints, nPoints);
  }

  public void fillRect(int x, int y, int width, int height)
  {
    g.fillRect(x, y, width, height);
  }

  public void fillRoundRect(int x, int y, int width, int height,
                            int arcWidth, int arcHeight)
  {
    g.fillRoundRect(x, y, width, height, arcWidth, arcHeight);
  }

  public Shape getClip()
  {
    return g.getClip();
  }

  public Rectangle getClipBounds()
  {
    return g.getClipBounds();
  }

  public Color getColor()
  {
    return g.getColor();
  }

  public Font getFont()
  {
    return g.getFont();
  }

  public FontMetrics getFontMetrics(Font f)
  {
    return g.getFontMetrics(f);
  }

  public void setClip(int x, int y, int width, int height)
  {
    g.setClip(x, y, width, height);
  }

  public void setClip(Shape clip)
  {
    g.setClip(clip);
  }

  public void setColor(Color c)
  {
    g.setColor(c);
  }

  public void setFont(Font font)
  {
    g.setFont(font);
  }

  public void setPaintMode()
  {
    g.setPaintMode();
  }

  public void setXORMode(Color c1)
  {
    g.setXORMode(c1);
  }

  public void translate(int x, int y)
  {
    g.translate(x, y);
  }
}