File: emf.trm

package info (click to toggle)
gnuplot 3.7.2-4
  • links: PTS
  • area: main
  • in suites: woody
  • size: 6,212 kB
  • ctags: 4,635
  • sloc: ansic: 43,538; cpp: 970; makefile: 883; lisp: 661; sh: 578; asm: 539; objc: 379; csh: 297; pascal: 192; perl: 138
file content (998 lines) | stat: -rw-r--r-- 30,854 bytes parent folder | download
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
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
/* 
 * $Id: emf.trm,v 1.1.6.4 2002/01/26 19:05:34 lhecking Exp $
 */

/* GNUPLOT - emf.trm */

/*[
 * Copyright 1998
 *
 * Permission to use, copy, and distribute this software and its
 * documentation for any purpose with or without fee is hereby granted,
 * provided that the above copyright notice appear in all copies and
 * that both that copyright notice and this permission notice appear
 * in supporting documentation.
 *
 * Permission to modify the software is granted, but not the right to
 * distribute the complete modified source code.  Modifications are to
 * be distributed as patches to the released version.  Permission to
 * distribute binaries produced by compiling modified sources is granted,
 * provided you
 *   1. distribute the corresponding source modifications from the
 *    released version in the form of a patch file along with the binaries,
 *   2. add special version identification to distinguish your version
 *    in addition to the base release version number,
 *   3. provide your name and address as the primary contact for the
 *    support of your modified version, and
 *   4. retain our contact information in regard to use of the base
 *    software.
 * Permission to distribute the released version of the source code along
 * with corresponding source modifications in the form of a patch file is
 * granted with same provisions 2 through 4 for binary distributions.
 *
 * This software is provided "as is" without express or implied warranty
 * to the extent permitted by applicable law.
]*/

/*
 * This file is included by ../term.c and ../docs/termdoc.c.
 *
 * This terminal driver supports:
 *   Enhanced Metafile Format
 *
 * TODO
 *
 * HISTORY
 *
 * 1.0.5 2000/07/20
 * - Handles were not freed at all, resulting to resource leaks when viewing on Windows 9x (not on NT4/W2000!!!)
 * 1.0.4 2000/06/28
 * - Emulated dashed vectors are now looking better
 * - 15 colors * 8 pointstyles = 120 pointtypes
 * 1.0.3 2000/03/29
 * - default font is now Arial 12
 * - implemented options (color/mono,dashed/solid,font)
 * - 15 colors * 5 dashtypes = 75 linetypes
 * 1.0.2 2000/03/22
 * - Polygon and Polyline structures are not working for Windows 9X, I
 *   really don't know why, replaced with lineto/moveto couples...
 * - Texts are now displayed in GM_Compatible mode because GM_Advanced is
 *   displaying correctly but it does not print correctly with Word97!
 * - Text centering now works best according to escapement/orientation
 * - Now there is 8 colors * 5 dashtypes = 40 linetypes
 * - Successfully Working on Linux Suse 6.1 (x86)
 *
 * 1.0.1 2000/03/16
 * - Unicode text have be to long aligned in EMF files (exttextoutw)
 * - Problems with text transparence (SetBkMode was not called)
 * - Null brush created for *not* filling polygon
 *
 * 1.0.0 2000/03/15
 * - Only tested on x86 Win32
 *
 * AUTHOR
 *   Stephane Barbaray <stephane.barbaray@compodata.com>
 *   Some code based on cgm.trm
 *
 * send your comments or suggestions to (info-gnuplot@dartmouth.edu).
 */

#include "driver.h"

#ifdef TERM_REGISTER
register_term(emf)
#endif

#ifdef TERM_PROTO
TERM_PUBLIC void EMF_options __PROTO((void));
TERM_PUBLIC void EMF_init __PROTO((void));
TERM_PUBLIC void EMF_reset __PROTO((void));
TERM_PUBLIC void EMF_text __PROTO((void));
TERM_PUBLIC void EMF_graphics __PROTO((void));
TERM_PUBLIC void EMF_move __PROTO((unsigned int x, unsigned int y));
TERM_PUBLIC void EMF_dashed_vector __PROTO((unsigned int ux, unsigned int uy));
TERM_PUBLIC void EMF_solid_vector __PROTO((unsigned int ux, unsigned int uy));
TERM_PUBLIC void EMF_linetype __PROTO((int linetype));
TERM_PUBLIC void EMF_linecolor __PROTO((int color));
TERM_PUBLIC void EMF_dashtype __PROTO((int dashtype));
TERM_PUBLIC void EMF_linewidth __PROTO((double width));
TERM_PUBLIC void EMF_put_text __PROTO((unsigned int x, unsigned int y, char *str));
TERM_PUBLIC int EMF_text_angle __PROTO((int ang));
TERM_PUBLIC int EMF_justify_text __PROTO((enum JUSTIFY mode));
TERM_PUBLIC void EMF_point __PROTO((unsigned int x, unsigned int y, int number));
TERM_PUBLIC void EMF_set_pointsize __PROTO((double size));
TERM_PUBLIC int EMF_set_font __PROTO((char *));

#ifdef RGB
#undef RGB
#endif
#define RGB(r,g,b) ((long)(((unsigned char)(r)|((short)((unsigned char)(g))<<8))|(((long)(unsigned char)(b))<<16)))

#ifndef min
#define min(a,b) (a<b?a:b)
#endif

#ifndef max
#define max(a,b) (a>b?a:b)
#endif

#define EMF_PX2HM 20
#define EMF_PT2HM 35.28
#define EMF_10THDEG2RAD (3.14159265359/1800)
#define EMF_XMAX (1024*EMF_PX2HM)
#define EMF_YMAX (768*EMF_PX2HM)
#define EMF_HTIC (EMF_XMAX/160)
#define EMF_VTIC EMF_HTIC
#define EMF_FONTNAME "Arial"
#define EMF_FONTSIZE 12
#define EMF_HCHAR (EMF_FONTSIZE*EMF_PT2HM)
#define EMF_VCHAR (EMF_FONTSIZE*EMF_PT2HM)
#define EMF_LINE_TYPES 5	/* number of line types we support */
#define EMF_COLORS 15		/* number of colors we support */
#define EMF_POINTS 8		/* number of markers we support */
#define EMF_MAX_SEGMENTS 104	/* maximum # polyline coordinates */

#define EMF_HANDLE_PEN		1
#define EMF_HANDLE_FONT		2
#define EMF_HANDLE_BRUSH	3
#define EMF_HANDLE_MAX		4

#define EMF_STOCK_OBJECT_FLAG	((unsigned long)0x1 << 31)
#define EMF_STOCK_OBJECT_WHITE_BRUSH 	(EMF_STOCK_OBJECT_FLAG + 0x00)
#define EMF_STOCK_OBJECT_BLACK_PEN   	(EMF_STOCK_OBJECT_FLAG + 0x07)
#define EMF_STOCK_OBJECT_DEFAULT_FONT	(EMF_STOCK_OBJECT_FLAG + 0x0A)

#define EMF_write_emr(type,size) {EMF_write_long(type);EMF_write_long(size);emf_record_count++;}
#define EMF_write_sizel(width,height) {EMF_write_long(width);EMF_write_long(height);}
#define EMF_write_points(x,y) {EMF_write_short(x);EMF_write_short(y);}
#define EMF_write_pointl(x,y) {EMF_write_long(x);EMF_write_long(y);}
#define EMF_write_rectl(left,top,right,bottom) {EMF_write_long(left);EMF_write_long(top);EMF_write_long(right);EMF_write_long(bottom);}

#define EMF_EOF() {EMF_write_emr(14,20);EMF_write_long(0);EMF_write_long(0x10);EMF_write_long(20);}
#define EMF_SetMapMode(mode) {EMF_write_emr(17,0xc);EMF_write_long(mode);}
#define EMF_SetWindowExtEx(width,height) {EMF_write_emr(9,0x10);EMF_write_sizel(width,height);}
#define EMF_SetWindowOrgEx(width,height) {EMF_write_emr(10,0x10);EMF_write_sizel(width,height);}
#define EMF_SetViewportExtEx(width,height) {EMF_write_emr(11,0x10);EMF_write_sizel(width,height);}
#define EMF_SetViewportOrgEx(width,height) {EMF_write_emr(12,0x10);EMF_write_sizel(width,height);}
#define EMF_SetTextColor(color) {EMF_write_emr(24,0xc);EMF_write_long(color);}
#define EMF_MoveToEx(x,y) {EMF_write_emr(27,0x10);EMF_write_pointl(x,y);}
#define EMF_LineTo(x,y) {EMF_write_emr(54,0x10);EMF_write_pointl(x,y);}
#define EMF_CreatePen(handle,type,width,color) {EMF_write_emr(38,0x1C);EMF_write_long(handle);EMF_write_long(type);EMF_write_long(width);EMF_write_long(0);EMF_write_long(color);}
#define EMF_CreateBrush(handle,type,color,hatch) {EMF_write_emr(39,0x18);EMF_write_long(handle);EMF_write_long(type);EMF_write_long(color);EMF_write_long(hatch);}
#define EMF_SelectObject(handle) {EMF_write_emr(37,0x0C);EMF_write_long(handle);}
#define EMF_DeleteObject(handle) {EMF_write_emr(40,0x0C);EMF_write_long(handle);}
#define EMF_SetTextAlign(align) {EMF_write_emr(22,0x0C);EMF_write_long(align);}
#define EMF_SetBkMode(mode) {EMF_write_emr(18,0x0C);EMF_write_long(mode);}

#endif /* TERM_PROTO */

#ifndef TERM_PROTO_ONLY
#ifdef TERM_BODY

/*
 * on NeXTstep, id is an identifier (in ObjC) and causes a parse error
 * since some asserts below are mistaken as casts. datum is a type
 * defined in ndbm.h which also causes a parse error (ndbm.h is
 * included as part of appkit.h, I think).  Strangely enough, both
 * errors only happen with cpp-precomp -smart, not with the regular
 * cpp. (AL)
 */

#ifdef NEXT
#define id id_
#define datum datum_
#endif

#include <ctype.h>		/* for isspace() */

#ifndef assert
#define assert(x) 0		/* defeat assertions */
#endif

/* uncomment the following to enable assertions for this module only,
   regardless of compiler switches */
#ifdef NDEBUG
#define DEFEAT_ASSERTIONS
#endif
#undef NDEBUG
#include <assert.h>

static unsigned int emf_posx;
static unsigned int emf_posy;
static unsigned int emf_record_count = 0;
static unsigned int emf_linetype = 1;
static unsigned int emf_linewidth;	/* line width in plot units */
static unsigned int emf_dashtype = 0;
static unsigned long emf_color = 0L;
static unsigned int emf_polyline[EMF_MAX_SEGMENTS];	/* stored polyline coordinates */
static unsigned int emf_graphics = FALSE;
static unsigned int emf_dashed = TRUE;
static unsigned int emf_monochrome = FALSE;
static int emf_coords = 0;	/* # polyline coordinates saved */
static char emf_fontname[255] = EMF_FONTNAME;
static int emf_fontsize = EMF_FONTSIZE;
static char emf_defaultfontname[255] = EMF_FONTNAME;
static int emf_defaultfontsize = EMF_FONTSIZE;
enum JUSTIFY emf_justify = LEFT;
static int emf_vert_text = 0;	/* text orientation -- nonzero for vertical */
static int emf_step_sizes[8];	/* array of currently used dash lengths in plot units */
static int emf_step_index = 0;	/* index into emf_step_sizes[] */
static int emf_step = 0;	/* amount of current dash not yet drawn, in plot units */
static int emf_tic, emf_tic707, emf_tic866, emf_tic500, emf_tic1241, emf_tic1077, emf_tic621;	/* marker dimensions */

static void EMF_flush_polyline __PROTO((void));
static void EMF_flush_polygon __PROTO((void));
static void EMF_write_byte __PROTO((int)); /* HBB 20001102: was 'char'... */
static void EMF_write_short __PROTO((int)); /* HBB 20001102: was 'short' */
static void EMF_write_long __PROTO((unsigned long));
static void EMF_write_float __PROTO((double)); /* HBB 20001102: was 'float' */
static void EMF_setfont __PROTO((void));

static void 
EMF_setfont()
{
    int i, count;
    int bold = 400;
    char italic = 0, underline = 0, strikeout = 0;
    char font[32];
    char *sub;

    if (!emf_graphics)
	return;

    count = min (strlen(emf_fontname), 31);
    if (((sub = strstr(emf_fontname, " bold")) != NULL)
	|| ((sub = strstr(emf_fontname, " Bold")) != NULL)) {
	bold = 700;
	count = min(sub - emf_fontname, count);
    }
    if (((sub = strstr(emf_fontname, " italic")) != NULL)
	|| ((sub = strstr(emf_fontname, " Italic")) != NULL)) {
	italic = 1;
	count = min(sub - emf_fontname, count);
    }
    if (((sub = strstr(emf_fontname, " underline")) != NULL)
	|| ((sub = strstr(emf_fontname, " Underline")) != NULL)) {
	underline = 1;
	count = min(sub - emf_fontname, count);
    }
    if (((sub = strstr(emf_fontname, " strikeout")) != NULL)
	|| ((sub = strstr(emf_fontname, " Strikeout")) != NULL)
	|| ((sub = strstr(emf_fontname, " StrikeOut")) != NULL)
	) {
	strikeout = 1;
	count = min(sub - emf_fontname, count);
    }

    safe_strncpy(font, emf_fontname, count + 1);

    EMF_SelectObject(EMF_STOCK_OBJECT_DEFAULT_FONT);
    EMF_DeleteObject(EMF_HANDLE_FONT);

    EMF_write_emr(82, 104);
    EMF_write_long(EMF_HANDLE_FONT);
    EMF_write_long((long) (emf_fontsize * EMF_PT2HM));	/* height */
    EMF_write_long(0);		/* width */
    EMF_write_long(emf_vert_text);	/* escapement */
    EMF_write_long(emf_vert_text);	/* orientation */
    EMF_write_long(bold);	/* weight */
    EMF_write_byte(italic);	/* italic */
    EMF_write_byte(underline);	/* underline */
    EMF_write_byte(strikeout);	/* strikeout */
    EMF_write_byte(1);		/* charset */
    EMF_write_byte(0);		/* out precision */
    EMF_write_byte(0);		/* clip precision */
    EMF_write_byte(0);		/* quality */
    EMF_write_byte(0);		/* pitch and family */
    for (i = 0; i < 32; i++) {	/* face name (max 32) */
	EMF_write_byte((char) (i < strlen(font) ? font[i] : 0));
	EMF_write_byte(0);
    }
    EMF_SelectObject(EMF_HANDLE_FONT);
}

static void 
EMF_flush_polygon()
{
    if (emf_coords == 0)
	return;
    else {
	int i = 0;
	/* Polygon works for NT4 but not on W9x */
/*              EMF_write_emr(3,(7+emf_coords*2)*4);
   EMF_write_rectl(0,0,0,0);
   EMF_write_long(emf_coords);
   while(i < emf_coords*2)
   EMF_write_pointl(emf_polyline[i++],term->ymax-emf_polyline[i++]);
 */
	EMF_MoveToEx(emf_polyline[i++], term->ymax - emf_polyline[i++]);
	while (i < emf_coords * 2)
	    EMF_LineTo(emf_polyline[i++], term->ymax - emf_polyline[i++]);
	EMF_LineTo(emf_polyline[0], term->ymax - emf_polyline[1]);
    }
    emf_coords = 0;
}

static void 
EMF_flush_polyline()
{
    if (emf_coords == 0)
	return;
    else if (emf_coords <= 2) {
	EMF_MoveToEx(emf_polyline[0], term->ymax - emf_polyline[1]);
	EMF_LineTo(emf_polyline[2], term->ymax - emf_polyline[3]);
    } else {
	int i = 0;
	/* Polyline works for NT4 but not on W9x */
/*              EMF_write_emr(4,(7+emf_coords*2)*4);
   EMF_write_rectl(0,0,0,0);
   EMF_write_long(emf_coords);
   while(i < emf_coords*2)
   EMF_write_pointl(emf_polyline[i++],term->ymax-emf_polyline[i++]);
 */
	EMF_MoveToEx(emf_polyline[i++], term->ymax - emf_polyline[i++]);
	while (i < emf_coords * 2)
	    EMF_LineTo(emf_polyline[i++], term->ymax - emf_polyline[i++]);
    }
    emf_coords = 0;
}

/* HBB 20001103: K&R'ized these 4 functions a bit better. */
static void 
EMF_write_byte(value)
    int value;
{
    char c = value;
    fwrite(&c, 1, 1, gpoutfile);
}

static void 
EMF_write_short(value)
    int value;
{
    short int actual_value = value;
    char c[2];

    c[1] = (actual_value >> 8) & 255;	/* convert to x86 order */
    c[0] = actual_value & 255;

    fwrite(c, 1, 2, gpoutfile);
}

static void 
EMF_write_long(value)
    unsigned long value;
{
    char c[4];

    c[3] = (value >> 24) & 0xFFL;	/* convert to x86 order */
    c[2] = (value >> 16) & 0xFFL;
    c[1] = (value >> 8) & 0xFFL;
    c[0] = value & 0xFFL;

    fwrite(c, 1, 4, gpoutfile);
}

/* FIXME HBB 20001103: this only works as given iff 'float' is the
 * same format as on x86's, i.e. IEEE 4-byte floating point format */
static void 
EMF_write_float(value)
    double value;
{
    char c[4];

    union {
	long l;
	float f;
    } u;

    u.f = value;

    c[3] = (u.l >> 24) & 0xFFL;	/* convert to x86 order */
    c[2] = (u.l >> 16) & 0xFFL;
    c[1] = (u.l >> 8) & 0xFFL;
    c[0] = u.l & 0xFFL;

    fwrite(c, 1, 4, gpoutfile);
}

TERM_PUBLIC void 
EMF_options()
{
    term->xmax = EMF_XMAX;
    term->ymax = EMF_YMAX;
    emf_dashed = TRUE;
    emf_monochrome = FALSE;
    while (!END_OF_COMMAND) {
	if (almost_equals(c_token, "de$fault")) {
	    strcpy(emf_defaultfontname, EMF_FONTNAME);
	    emf_defaultfontsize = EMF_FONTSIZE;
	    emf_monochrome = FALSE;
	    emf_dashed = TRUE;
	    c_token++;
	    continue;
	}
	if (almost_equals(c_token, "m$onochrome")) {
	    emf_monochrome = TRUE;
	    c_token++;
	    continue;
	}
	if (almost_equals(c_token, "c$olor") || almost_equals(c_token, "c$olour")) {
	    emf_monochrome = FALSE;
	    c_token++;
	    continue;
	}
	if (almost_equals(c_token, "da$shed")) {
	    emf_dashed = TRUE;
	    c_token++;
	    continue;
	}
	if (almost_equals(c_token, "s$olid")) {
	    emf_dashed = FALSE;
	    c_token++;
	    continue;
	}
	break;
    }
    if (!END_OF_COMMAND && isstring(c_token)) {
	quote_str(emf_defaultfontname, c_token, MAX_ID_LEN);
	c_token++;
    }
    if (!END_OF_COMMAND) {
	/* We have font size specified */
	struct value a;
	emf_defaultfontsize = (int) real(const_express(&a));
    }
    EMF_set_font(NULL);		/* set default font */

    sprintf(term_options, "%s %s \"%s\" %d",
	    emf_monochrome ? "monochrome" : "color",
	    emf_dashed ? "dashed" : "solid",
	    emf_defaultfontname, emf_defaultfontsize);
}

TERM_PUBLIC void 
EMF_init()
{
    emf_posx = emf_posy = 0;
    emf_linetype = 0;
    emf_vert_text = 0;
    emf_graphics = FALSE;
}

TERM_PUBLIC void 
EMF_graphics()
{
    /* header start */
    emf_record_count = 0;
    EMF_write_emr(1, 100);
    EMF_write_long(0);		/* rclBounds */
    EMF_write_long(0);
    EMF_write_long(term->xmax / 20);
    EMF_write_long(term->ymax / 20);
    EMF_write_long(0);		/* rclFrame */
    EMF_write_long(0);
    EMF_write_long(term->xmax);
    EMF_write_long(term->ymax);
    EMF_write_long(0x464D4520);	/* signature */
    EMF_write_long(0x00010000);	/* version */
    EMF_write_long(0);		/* nBytes */
    EMF_write_long(0);		/* nRecords */
    EMF_write_short(EMF_HANDLE_MAX);	/* nHandles */
    EMF_write_short(0);		/* reserved */
    EMF_write_long(0);		/* descSize */
    EMF_write_long(0);		/* descOff */
    EMF_write_long(0);		/* nPalEntries */
    EMF_write_long(1600);	/* ref dev pixwidth */
    EMF_write_long(1200);	/* ref dev pixheight */
    EMF_write_long(320);	/* ref dev mwidth */
    EMF_write_long(240);	/* ref dev mheight */
    EMF_write_long(0);		/* cbPixelFormat  */
    EMF_write_long(0);		/* offPixelFormat  */
    EMF_write_long(0);		/* bOpenGL */
    emf_graphics = TRUE;
    /* header end */

    EMF_SetMapMode(8);		/* forcing anisotropic mode */
    EMF_SetWindowExtEx(term->xmax, term->ymax);		/* setting logical (himetric) size      */
    EMF_SetViewportExtEx(term->xmax / 20, term->ymax / 20);	/* setting device (pixel) size */
    EMF_CreatePen(EMF_HANDLE_PEN, 0, 1, 0x000000);	/* init default pen */
    EMF_SelectObject(EMF_HANDLE_PEN);
    EMF_SetBkMode(1);		/* transparent background for text */
    EMF_CreateBrush(EMF_HANDLE_BRUSH, 1, 0, 0);		/* transparent brush for polygons */
    EMF_SelectObject(EMF_HANDLE_BRUSH);
    EMF_set_font(NULL);		/* init default font */
}

TERM_PUBLIC int 
EMF_set_font(char *font)
{
    int sep;			/* hope this function exist everywhere... */

    if (font && *font) {
	char *comma = strchr(font, ',');
	if (comma == NULL)
	    return FALSE;	/* bad format */
	sep = comma - font;
	safe_strncpy(emf_fontname, font, min(sep + 1, 32));
	emf_fontsize = atoi(&font[sep + 1]);
    } else {
	strcpy(emf_fontname, emf_defaultfontname);
	emf_fontsize = emf_defaultfontsize;
    }
    term->h_char = (emf_fontsize * EMF_PT2HM);
    term->v_char = (emf_fontsize * EMF_PT2HM);
    EMF_setfont();
    return TRUE;
}

TERM_PUBLIC void 
EMF_text()
{
    long pos;
    EMF_flush_polyline();

    /* writing end of metafile */
    EMF_SelectObject(EMF_STOCK_OBJECT_DEFAULT_FONT);
    EMF_DeleteObject(EMF_HANDLE_FONT);
    EMF_SelectObject(EMF_STOCK_OBJECT_BLACK_PEN);
    EMF_DeleteObject(EMF_HANDLE_PEN);
    EMF_SelectObject(EMF_STOCK_OBJECT_WHITE_BRUSH);
    EMF_DeleteObject(EMF_HANDLE_BRUSH);
    EMF_EOF();

    /* updating header */
    pos = ftell(gpoutfile);
    fseek(gpoutfile, 48, SEEK_SET);
    EMF_write_long(pos);
    EMF_write_long(emf_record_count);
    /* HBB 20010228: have to make known that we're no longer in graphics
     * status. */
    emf_graphics = FALSE;
}

TERM_PUBLIC void 
EMF_linetype(linetype)
int linetype;
{
    /* Note : separating linetype and color would have not been futile, but anyway... */

    assert(linetype >= -2);
    if (linetype == emf_linetype)
	return;
    emf_linetype = linetype;

    EMF_linecolor(linetype);
    EMF_dashtype(linetype);
}

TERM_PUBLIC void 
EMF_linecolor(linecolor)
int linecolor;
{
    static long GPFAR color_table_data[] =
    {
	RGB(255, 0, 0),		/* red */
	RGB(0, 255, 0),		/* green */
	RGB(0, 0, 255),		/* blue */
	RGB(255, 0, 255),	/* magenta */
	RGB(0, 0, 128),		/* dark blue */
	RGB(128, 0, 0),		/* dark red */
	RGB(0, 128, 128),	/* dark cyan */
	RGB(0, 0, 0),		/* black */
	RGB(128, 128, 128),	/* grey */
	RGB(0, 128, 64),	/* very dark cyan */
	RGB(128, 128, 0),	/* dark yellow */
	RGB(128, 0, 128),	/* dark magenta */
	RGB(192, 192, 192),	/* light grey */
	RGB(0, 255, 255),	/* cyan */
	RGB(255, 255, 0),	/* yellow */
    };

    assert(linecolor >= -2);
    linecolor = (linecolor < 0 || emf_monochrome) ? 7 : (linecolor % EMF_COLORS);
    if (color_table_data[linecolor] == emf_color)
	return;
    emf_color = color_table_data[linecolor];

    EMF_flush_polyline();
}

TERM_PUBLIC void 
EMF_linewidth(width)
double width;
{
    assert(width >= 0);
    if (width == emf_linewidth)
	return;
    emf_linewidth = width;

    EMF_dashtype(emf_dashtype);	/* have dash lengths recalculated */
}

TERM_PUBLIC void 
EMF_dashtype(dashtype)
    int dashtype;
{
    int i, j;
    /* Each group of 8 entries in dot_length[] defines a dash
       pattern.  Entries in each group are alternately length of
       whitespace and length of line, in units of 2/3 of the
       linewidth. */
    static int dot_length[EMF_LINE_TYPES * 8] =
    {				/* 0 - solid             */
	5, 8, 5, 8, 5, 8, 5, 8,	/* 1 - dashes            */
	4, 2, 4, 2, 4, 2, 4, 2,	/* 2 - dotted            */
	4, 8, 4, 2, 4, 8, 4, 2,	/* 3 - dash-dot          */
	4, 9, 4, 2, 4, 2, 0, 0,	/* 4 - dash-dot-dot      */
    };


    assert(dashtype >= -2);
    if (dashtype == emf_dashtype)
	return;

    emf_dashtype = dashtype;

    EMF_flush_polyline();

    if (dashtype >= 0)
	dashtype = (dashtype / EMF_COLORS) % EMF_LINE_TYPES;

    if (dashtype < 1 || !emf_dashed) {	/* solid mode */
	EMF_SelectObject(EMF_STOCK_OBJECT_BLACK_PEN);
	EMF_DeleteObject(EMF_HANDLE_PEN);
	EMF_CreatePen(EMF_HANDLE_PEN, 0, emf_linewidth * EMF_PX2HM, emf_color);
	EMF_SelectObject(EMF_HANDLE_PEN);

	term->vector = EMF_solid_vector;
    } else {			/* Since win32 dashed lines works only with 1 pixel linewith we must emulate */
	EMF_SelectObject(EMF_STOCK_OBJECT_BLACK_PEN);
	EMF_DeleteObject(EMF_HANDLE_PEN);
	EMF_CreatePen(EMF_HANDLE_PEN, 0, emf_linewidth * EMF_PX2HM, emf_color);
	EMF_SelectObject(EMF_HANDLE_PEN);

	term->vector = EMF_dashed_vector;

	/* set up dash dimensions */
	j = (dashtype - 1) * 8;
	for (i = 0; i < 8; i++, j++) {
	    if (dot_length[j])
		emf_step_sizes[i] = (dot_length[j] * emf_linewidth * EMF_PX2HM) * 3 / 3;
	    else
		emf_step_sizes[i] = 0;
	}
	/* first thing drawn will be a line */
	emf_step = emf_step_sizes[1];
	emf_step_index = 1;
    }
}

TERM_PUBLIC void 
EMF_move(x, y)
unsigned int x, y;
{
    assert(x < term->xmax && y < term->ymax);
    if (x == emf_posx && y == emf_posy)
	return;
    EMF_flush_polyline();
    emf_posx = x;
    emf_posy = y;
}

TERM_PUBLIC void 
EMF_dashed_vector(ux, uy)
unsigned int ux, uy;
{
    int xa, ya;
    int dx, dy, adx, ady;
    int dist;			/* approximate distance in plot units from starting point to specified end point. */
    long remain;		/* approximate distance in plot units remaining to specified end point. */

    assert(ux < term->xmax && uy < term->ymax);

    dx = (ux - emf_posx);
    dy = (uy - emf_posy);
    adx = abs(dx);
    ady = abs(dy * 10);

    /* using the approximation sqrt(x**2 + y**2)  ~  x + (5*x*x)/(12*y)   when x > y.  
       Note ordering of calculations to avoid overflow on 16 bit architectures */
    if (10 * adx < ady)
	dist = (ady / 2 + 25 * adx / ady * adx / 6 * 5) / 5;
    else {
	if (adx == 0)
	    return;
	dist = (adx * 10 + (ady / 24) * (ady / adx)) / 10;
    }
    remain = dist;
    xa = emf_posx;
    ya = emf_posy;
    while (remain > emf_step) {
	remain -= emf_step;
	if (emf_step_index & 1)
	    EMF_solid_vector((int) (ux - (remain * dx) / dist), (int) (uy - (remain * dy) / dist));
	else {
	    xa = (int) (ux - (remain * dx) / dist);
	    ya = (int) (uy - (remain * dy) / dist);
	    EMF_move(xa, ya);
	}
	if (++emf_step_index >= 8)
	    emf_step_index = 0;
	emf_step = emf_step_sizes[emf_step_index];
    }
    if (emf_step_index & 1)
	EMF_solid_vector(ux, uy);
    else
	EMF_move(ux, uy);
    emf_step -= (int) remain;
}

TERM_PUBLIC void 
EMF_solid_vector(ux, uy)
unsigned int ux, uy;
{
    assert(ux < term->xmax && uy < term->ymax);
    if (ux == emf_posx && uy == emf_posy)
	return;
    if (emf_coords * 2 > EMF_MAX_SEGMENTS - 2)
	EMF_flush_polyline();
    if (emf_coords == 0) {
	emf_polyline[0] = emf_posx;
	emf_polyline[1] = emf_posy;
	emf_coords++;
    }
    emf_posx = emf_polyline[emf_coords * 2] = ux;
    emf_posy = emf_polyline[emf_coords * 2 + 1] = uy;
    emf_coords++;
}

TERM_PUBLIC void 
EMF_put_text(x, y, str)
unsigned int x, y;
char str[];
{
    int i, len = strlen(str);
    if (len % 2)		/* Must be long aligned! */
	len++;
    EMF_flush_polyline();
    EMF_SetTextColor(emf_color);	/* since text doesn't use pens, we must initialize with this */
    EMF_write_emr(84, 76 + len * 2);	/* exttextoutw, yes it's the 16bits char version! */
    EMF_write_rectl(0, 0, 0, 0);	/* bounding, never used */
    EMF_write_long(1);		/* GM_Compatible mode for advanced scaling */
    EMF_write_float(EMF_PX2HM);	/* x scale */
    EMF_write_float(EMF_PX2HM);	/* y scale */
    EMF_write_pointl(x + (long) ((EMF_VCHAR / 2) * sin(emf_vert_text * EMF_10THDEG2RAD)), term->ymax - y + (long) ((EMF_VCHAR / 2) * cos(emf_vert_text * EMF_10THDEG2RAD)));	/* positioning... y is recentered from bottom reference set in text align */
    EMF_write_long(strlen(str));	/* real char size */
    EMF_write_long(76);		/* offset to text */
    EMF_write_long(0);		/* options, none */
    EMF_write_rectl(0, 0, 0, 0);	/* rectangle clipping not used */
    EMF_write_long(0);		/* offset to dx, can't be used since really we don't know anything about the face properties used */

    for (i = 0; i < len; i++) {	/* it is safe to go up to strlen+1 for aligning to long */
	char pad = 0;
	fwrite(&str[i], 1, 1, gpoutfile);
	fwrite(&pad, 1, 1, gpoutfile);
    }
    emf_posx = emf_posy = -2000;
}

TERM_PUBLIC int 
EMF_text_angle(ang)
int ang;
{
    /* Note : why did they use choose only 0 and 1? That's stupid! */
    /* Win GDI rotation is scaled in tenth of degrees, so... */
    switch (ang) {
    case 0:			/* left right */
	if (emf_vert_text != 0) {
	    emf_vert_text = 0;
	    EMF_setfont();
	}
	break;
    case 1:			/* bottom up */
	if (emf_vert_text != 900) {
	    emf_vert_text = 900;
	    EMF_setfont();
	}
	break;
    }
    return TRUE;
}

TERM_PUBLIC int 
EMF_justify_text(mode)
enum JUSTIFY mode;
{
    int align = 8;		/* y referenced to bottom */
    switch (mode) {
    case LEFT:
	align |= 0;
	break;
    case RIGHT:
	align |= 2;
	break;
    case CENTRE:
	align |= 6;
	break;
    }
    EMF_SetTextAlign(align);
    return (TRUE);
}

TERM_PUBLIC void 
EMF_reset()
{
    emf_posx = emf_posy = 0;
    emf_graphics = FALSE;
}

TERM_PUBLIC void 
EMF_point(x, y, number)
unsigned int x, y;
int number;
{
    int old_dashtype;
    unsigned long old_linecolor;

    EMF_flush_polyline();
    old_dashtype = emf_dashtype;
    old_linecolor = emf_color;
    EMF_linecolor(number);
    EMF_dashtype(number % EMF_COLORS);

    if (number < 0) {		/* draw dot */
	EMF_move(x, y);
	EMF_solid_vector(x + 1, y);
	goto end_points;
    }
    number = (number / EMF_COLORS) % EMF_POINTS;

    switch (number) {
    case 0:			/* draw diamond */
	EMF_move(x - emf_tic, y);
	EMF_solid_vector(x, y - emf_tic);
	EMF_solid_vector(x + emf_tic, y);
	EMF_solid_vector(x, y + emf_tic);
	EMF_flush_polygon();
	break;
    case 1:			/* draw plus */
	EMF_move(x - emf_tic, y);
	EMF_solid_vector(x + emf_tic, y);
	EMF_move(x, y - emf_tic);
	EMF_solid_vector(x, y + emf_tic);
	break;
    case 2:			/* draw box */
	EMF_move(x - emf_tic707, y - emf_tic707);
	EMF_solid_vector(x + emf_tic707, y - emf_tic707);
	EMF_solid_vector(x + emf_tic707, y + emf_tic707);
	EMF_solid_vector(x - emf_tic707, y + emf_tic707);
	EMF_flush_polygon();
	break;
    case 3:			/* draw X */
	EMF_move(x - emf_tic707, y - emf_tic707);
	EMF_solid_vector(x + emf_tic707, y + emf_tic707);
	EMF_move(x - emf_tic707, y + emf_tic707);
	EMF_solid_vector(x + emf_tic707, y - emf_tic707);
	break;
    case 4:			/* draw triangle (point up) */
	EMF_move(x, y + emf_tic1241);
	EMF_solid_vector(x - emf_tic1077, y - emf_tic621);
	EMF_solid_vector(x + emf_tic1077, y - emf_tic621);
	EMF_flush_polygon();
	break;
    case 5:			/* draw star (asterisk) */
	EMF_move(x, y - emf_tic);
	EMF_solid_vector(x, y + emf_tic);
	EMF_move(x + emf_tic866, y - emf_tic500);
	EMF_solid_vector(x - emf_tic866, y + emf_tic500);
	EMF_move(x + emf_tic866, y + emf_tic500);
	EMF_solid_vector(x - emf_tic866, y - emf_tic500);
	break;
    case 6:			/* draw triangle (point down) */
	EMF_move(x, y - emf_tic1241);
	EMF_solid_vector(x - emf_tic1077, y + emf_tic621);
	EMF_solid_vector(x + emf_tic1077, y + emf_tic621);
	EMF_flush_polygon();
	break;
    case 7:			/* draw circle (actually, dodecagon)
				   (WinWord 6 accepts the CGM "circle"
				   element, but the resulting circle
				   is not correctly centered!) */
	EMF_move(x, y - emf_tic);
	EMF_solid_vector(x + emf_tic500, y - emf_tic866);
	EMF_solid_vector(x + emf_tic866, y - emf_tic500);
	EMF_solid_vector(x + emf_tic, y);
	EMF_solid_vector(x + emf_tic866, y + emf_tic500);
	EMF_solid_vector(x + emf_tic500, y + emf_tic866);
	EMF_solid_vector(x, y + emf_tic);
	EMF_solid_vector(x - emf_tic500, y + emf_tic866);
	EMF_solid_vector(x - emf_tic866, y + emf_tic500);
	EMF_solid_vector(x - emf_tic, y);
	EMF_solid_vector(x - emf_tic866, y - emf_tic500);
	EMF_solid_vector(x - emf_tic500, y - emf_tic866);
	EMF_flush_polygon();
	break;
    }
  end_points:
    emf_color = old_linecolor;
    EMF_dashtype(old_dashtype);
}


TERM_PUBLIC void 
EMF_set_pointsize(size)
double size;
{
    emf_tic = (size * term->h_tic / 2);
    emf_tic707 = emf_tic * 12 / 17;
    emf_tic866 = emf_tic * 13 / 15;
    emf_tic500 = emf_tic / 2;
    emf_tic1241 = emf_tic * 36 / 29;
    emf_tic1077 = emf_tic * 14 / 13;
    emf_tic621 = emf_tic * 18 / 29;
}

#ifdef DEFEAT_ASSERTIONS
#define NDEBUG
#include <assert.h>
#undef DEFEAT_ASSERTIONS
#endif /* DEFEAT_ASSERTIONS */

#ifdef NEXT
#undef id
#undef datum
#endif

#endif /* TERM_BODY */

#ifdef TERM_TABLE
TERM_TABLE_START(emf_driver)
"emf", "Enhanced Metafile format",
EMF_XMAX, EMF_YMAX, EMF_VCHAR, EMF_HCHAR,
EMF_VTIC, EMF_HTIC, EMF_options, EMF_init, EMF_reset,
EMF_text, null_scale, EMF_graphics, EMF_move, EMF_solid_vector,
EMF_linetype, EMF_put_text, EMF_text_angle,
EMF_justify_text, EMF_point, do_arrow, EMF_set_font,
EMF_set_pointsize,
TERM_BINARY,			/* various flags */
NULL,				/* after one plot of multiplot */
NULL,				/* before subsequent plot of multiplot */
NULL,				/* clear part of multiplot */
EMF_linewidth
TERM_TABLE_END(emf_driver)
#undef LAST_TERM
#define LAST_TERM emf_driver

#endif /* TERM_TABLE */
#endif /* TERM_PROTO_ONLY */

#ifdef TERM_HELP
START_HELP(emf)
"1 emf",
"?commands set terminal emf",
"?set terminal emf",
"?set term emf",
"?terminal emf",
"?term emf",
"?emf",
" The `emf` terminal generates an Enhanced Metafile Format file.  This file format",
" is the metafile standard on MS Win32 Systems"
"",
" Syntax:",
"       set terminal emf {<color>} {solid | dashed}",
"                        {\"<font>\"} {<fontsize>}",
"",
" <color> is either `color` or `monochrome`; ",
" `solid` draws all curves with solid lines, overriding any dashed patterns;",
" <font> is the name of a font; and ",
" `<fontsize>` is the size of the font in points.",
"",
" The first two options can be in any order.  Selecting `default` sets all",
" options to their default values.",
"",
" Examples:",
"       set terminal emf 'Times Roman Italic' 12",
"       set terminal emf color solid    # no pesky dashes!"
END_HELP(emf)
#endif /* TERM_HELP */