2 * PostScript driver Type1 font functions
4 * Copyright 2002 Huw D M Davies for CodeWeavers
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
22 #include "wine/port.h"
36 #include "wine/debug.h"
38 WINE_DEFAULT_DEBUG_CHANNEL(psdrv);
41 DWORD glyph_sent_size;
46 #define GLYPH_SENT_INC 128
48 /* Type 1 font commands */
59 #define MS_MAKE_TAG( _x1, _x2, _x3, _x4 ) \
60 ( ( (DWORD)_x4 << 24 ) | \
61 ( (DWORD)_x3 << 16 ) | \
62 ( (DWORD)_x2 << 8 ) | \
65 #ifdef WORDS_BIGENDIAN
66 static inline WORD get_be_word(const void *p) { return *(WORD*)p; }
67 static inline DWORD get_be_dword(const void *p) { return *(DWORD*)p; }
69 static inline WORD get_be_word(const void *p) { return RtlUshortByteSwap(*(WORD*)p); }
70 static inline DWORD get_be_dword(const void *p) { return RtlUlongByteSwap(*(DWORD*)p); }
73 TYPE1 *T1_download_header(PSDRV_PDEVICE *physDev, char *ps_name, RECT *bbox, UINT emsize)
78 char dict[] = /* name, emsquare, fontbbox */
80 " /FontName /%s def\n"
81 " /Encoding 256 array 0 1 255{1 index exch /.notdef put} for def\n"
83 " /FontMatrix [1 %d div 0 0 1 %d div 0 0] def\n"
84 " /FontBBox [%d %d %d %d] def\n"
86 " /Private 7 dict begin\n"
87 " /RD {string currentfile exch readhexstring pop} def\n"
90 " /MinFeature {16 16} def\n"
91 " /BlueValues [] def\n"
92 " /password 5839 def\n"
94 " currentdict end def\n"
95 " currentdict dup /Private get begin\n"
96 " /CharStrings 256 dict begin\n"
97 " /.notdef 4 RD 8b8b0d0e ND\n"
98 " currentdict end put\n"
100 "currentdict end dup /FontName get exch definefont pop\n";
102 t1 = HeapAlloc(GetProcessHeap(), 0, sizeof(*t1));
105 t1->glyph_sent_size = GLYPH_SENT_INC;
106 t1->glyph_sent = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
107 t1->glyph_sent_size *
108 sizeof(*(t1->glyph_sent)));
110 buf = HeapAlloc(GetProcessHeap(), 0, sizeof(dict) + strlen(ps_name) +
113 sprintf(buf, dict, ps_name, t1->emsize, t1->emsize,
114 bbox->left, bbox->bottom, bbox->right, bbox->top);
116 PSDRV_WriteSpool(physDev, buf, strlen(buf));
118 HeapFree(GetProcessHeap(), 0, buf);
128 static STR *str_init(int sz)
130 STR *str = HeapAlloc(GetProcessHeap(), 0, sizeof(*str));
132 str->str = HeapAlloc(GetProcessHeap(), 0, str->max_len);
137 static void str_free(STR *str)
139 HeapFree(GetProcessHeap(), 0, str->str);
140 HeapFree(GetProcessHeap(), 0, str);
143 static void str_add_byte(STR *str, BYTE b)
145 if(str->len == str->max_len) {
147 str->str = HeapReAlloc(GetProcessHeap(), 0, str->str, str->max_len);
149 str->str[str->len++] = b;
152 static void str_add_num(STR *str, int num)
154 if(num <= 107 && num >= -107)
155 str_add_byte(str, num + 139);
156 else if(num >= 108 && num <= 1131) {
157 str_add_byte(str, ((num - 108) >> 8) + 247);
158 str_add_byte(str, (num - 108) & 0xff);
159 } else if(num <= -108 && num >= -1131) {
161 str_add_byte(str, ((num - 108) >> 8) + 251);
162 str_add_byte(str, (num - 108) & 0xff);
164 str_add_byte(str, 0xff);
165 str_add_byte(str, (num >> 24) & 0xff);
166 str_add_byte(str, (num >> 16) & 0xff);
167 str_add_byte(str, (num >> 8) & 0xff);
168 str_add_byte(str, (num & 0xff));
172 static void str_add_point(STR *str, POINT pt, POINT *curpos)
174 str_add_num(str, pt.x - curpos->x);
175 str_add_num(str, pt.y - curpos->y);
179 static void str_add_cmd(STR *str, enum t1_cmds cmd)
181 str_add_byte(str, (BYTE)cmd);
184 static int str_get_bytes(STR *str, BYTE **b)
190 static BOOL get_hmetrics(HDC hdc, DWORD index, short *lsb, WORD *advance)
199 GetFontData(hdc, MS_MAKE_TAG('h','h','e','a'), 0, hhea, sizeof(hhea));
200 num_of_long = get_be_word(hhea + 34);
202 if(index < num_of_long)
204 if(GetFontData(hdc, MS_MAKE_TAG('h','m','t','x'), index * 4, buf, 4) != 4) return FALSE;
205 *advance = get_be_word(buf);
206 *lsb = (signed short)get_be_word(buf + 2);
210 if(GetFontData(hdc, MS_MAKE_TAG('h','m','t','x'), (num_of_long - 1) * 4, buf, 2) != 2) return FALSE;
211 *advance = get_be_word(buf);
212 if(GetFontData(hdc, MS_MAKE_TAG('h','m','t','x'), num_of_long * 4 + (index - num_of_long) * 2, buf, 2) != 2) return FALSE;
213 *lsb = (signed short)get_be_word(buf);
219 static BOOL get_glyf_pos(HDC hdc, DWORD index, DWORD *start, DWORD *end)
228 len = GetFontData(hdc, MS_MAKE_TAG('h','e','a','d'), 0, NULL, 0);
229 head = HeapAlloc(GetProcessHeap(), 0, len);
230 GetFontData(hdc, MS_MAKE_TAG('h','e','a','d'), 0, head, len);
231 loca_format = get_be_word(head + 50);
233 len = GetFontData(hdc, MS_MAKE_TAG('l','o','c','a'), 0, NULL, 0);
234 loca = HeapAlloc(GetProcessHeap(), 0, len);
235 GetFontData(hdc, MS_MAKE_TAG('l','o','c','a'), 0, loca, len);
237 switch(loca_format) {
239 *start = get_be_word(((WORD*)loca) + index);
241 *end = get_be_word(((WORD*)loca) + index + 1);
246 *start = get_be_dword(((DWORD*)loca) + index);
247 *end = get_be_dword(((DWORD*)loca) + index + 1);
251 ERR("Unknown loca_format %d\n", loca_format);
254 HeapFree(GetProcessHeap(), 0, loca);
255 HeapFree(GetProcessHeap(), 0, head);
260 static BYTE *get_glyph_data(HDC hdc, DWORD index)
262 DWORD start, end, len;
265 if(!get_glyf_pos(hdc, index, &start, &end))
269 if(!len) return NULL;
271 data = HeapAlloc(GetProcessHeap(), 0, len);
272 if(!data) return NULL;
274 if(GetFontData(hdc, MS_MAKE_TAG('g','l','y','f'), start, data, len) != len)
276 HeapFree(GetProcessHeap(), 0, data);
285 WORD *end_pts; /* size_is(num_conts) */
286 BYTE *flags; /* size_is(end_pts[num_conts - 1] + 1) */
287 POINT *pts; /* size_is(end_pts[num_conts - 1] + 1) */
292 static inline WORD pts_in_outline(glyph_outline *outline)
296 if(outline->num_conts)
297 num_pts = outline->end_pts[outline->num_conts - 1] + 1;
302 static BOOL append_glyph_outline(HDC hdc, DWORD index, glyph_outline *outline);
304 static BOOL append_simple_glyph(BYTE *data, glyph_outline *outline)
306 USHORT num_pts, start_pt = 0, ins_len;
308 int num_conts, start_cont, i;
312 start_cont = outline->num_conts;
313 start_pt = pts_in_outline(outline);
315 num_conts = get_be_word(data);
317 end_pts = (WORD*)(data + 10);
318 num_pts = get_be_word(end_pts + num_conts - 1) + 1;
320 ins_len = get_be_word(end_pts + num_conts);
322 ptr = (BYTE*)(end_pts + num_conts) + 2 + ins_len;
324 if(outline->num_conts)
326 outline->end_pts = HeapReAlloc(GetProcessHeap(), 0, outline->end_pts, (start_cont + num_conts) * sizeof(*outline->end_pts));
327 outline->flags = HeapReAlloc(GetProcessHeap(), 0, outline->flags, start_pt + num_pts);
328 outline->pts = HeapReAlloc(GetProcessHeap(), 0, outline->pts, (start_pt + num_pts) * sizeof(*outline->pts));
332 outline->end_pts = HeapAlloc(GetProcessHeap(), 0, num_conts * sizeof(*outline->end_pts));
333 outline->flags = HeapAlloc(GetProcessHeap(), 0, num_pts);
334 outline->pts = HeapAlloc(GetProcessHeap(), 0, num_pts * sizeof(*outline->pts));
337 outline->num_conts += num_conts;
339 for(i = 0; i < num_conts; i++)
340 outline->end_pts[start_cont + i] = start_pt + get_be_word(end_pts + i);
342 for(i = 0; i < num_pts; i++)
344 outline->flags[start_pt + i] = *ptr;
351 outline->flags[start_pt + i] = *(ptr - 1);
360 for(i = 0; i < num_pts; i++)
365 if(outline->flags[start_pt + i] & 2)
368 if((outline->flags[start_pt + i] & 0x10) == 0)
371 else if((outline->flags[start_pt + i] & 0x10) == 0)
373 delta = (signed short)get_be_word(ptr);
377 outline->pts[start_pt + i].x = x;
381 for(i = 0; i < num_pts; i++)
386 if(outline->flags[start_pt + i] & 4)
389 if((outline->flags[start_pt + i] & 0x20) == 0)
392 else if((outline->flags[start_pt + i] & 0x20) == 0)
394 delta = (signed short)get_be_word(ptr);
398 outline->pts[start_pt + i].y = y;
403 /* Some flags for composite glyphs. See glyf table in OT spec */
404 #define ARG_1_AND_2_ARE_WORDS (1L << 0)
405 #define ARGS_ARE_XY_VALUES (1L << 1)
406 #define WE_HAVE_A_SCALE (1L << 3)
407 #define MORE_COMPONENTS (1L << 5)
408 #define WE_HAVE_AN_X_AND_Y_SCALE (1L << 6)
409 #define WE_HAVE_A_TWO_BY_TWO (1L << 7)
410 #define USE_MY_METRICS (1L << 9)
412 static BOOL append_complex_glyph(HDC hdc, const BYTE *data, glyph_outline *outline)
414 const BYTE *ptr = data;
417 WORD scale_xx = 1, scale_xy = 0, scale_yx = 0, scale_yy = 1;
418 WORD start_pt, end_pt;
423 flags = get_be_word(ptr);
425 index = get_be_word(ptr);
427 if(flags & ARG_1_AND_2_ARE_WORDS)
429 arg1 = (short)get_be_word(ptr);
431 arg2 = (short)get_be_word(ptr);
436 arg1 = *(char*)ptr++;
437 arg2 = *(char*)ptr++;
439 if(flags & WE_HAVE_A_SCALE)
441 scale_xx = scale_yy = get_be_word(ptr);
444 else if(flags & WE_HAVE_AN_X_AND_Y_SCALE)
446 scale_xx = get_be_word(ptr);
448 scale_yy = get_be_word(ptr);
451 else if(flags & WE_HAVE_A_TWO_BY_TWO)
453 scale_xx = get_be_word(ptr);
455 scale_xy = get_be_word(ptr);
457 scale_yx = get_be_word(ptr);
459 scale_yy = get_be_word(ptr);
463 start_pt = pts_in_outline(outline);
464 append_glyph_outline(hdc, index, outline);
465 end_pt = pts_in_outline(outline);
467 if((flags & ARGS_ARE_XY_VALUES) == 0)
469 WORD orig_pt = arg1, new_pt = arg2;
472 if(orig_pt >= start_pt || new_pt >= end_pt) return FALSE;
474 arg1 = outline->pts[orig_pt].x - outline->pts[new_pt].x;
475 arg2 = outline->pts[orig_pt].y - outline->pts[new_pt].y;
477 while(start_pt < end_pt)
479 outline->pts[start_pt].x += arg1;
480 outline->pts[start_pt].y += arg2;
484 if(flags & USE_MY_METRICS)
485 get_hmetrics(hdc, index, &outline->lsb, &outline->advance);
487 } while(flags & MORE_COMPONENTS);
491 static BOOL append_glyph_outline(HDC hdc, DWORD index, glyph_outline *outline)
496 glyph_data = get_glyph_data(hdc, index);
497 if(!glyph_data) return FALSE;
499 num_conts = get_be_word(glyph_data);
502 append_complex_glyph(hdc, glyph_data, outline);
503 else if(num_conts > 0)
504 append_simple_glyph(glyph_data, outline);
506 HeapFree(GetProcessHeap(), 0, glyph_data);
510 static inline BOOL on_point(const glyph_outline *outline, WORD pt)
512 return outline->flags[pt] & 1;
515 BOOL T1_download_glyph(PSDRV_PDEVICE *physDev, DOWNLOAD *pdl, DWORD index,
525 glyph_outline outline;
527 static const char glyph_def_begin[] =
529 "/Private get begin\n"
530 "/CharStrings get begin\n"
532 static const char glyph_def_end[] =
536 TRACE("%d %s\n", index, glyph_name);
537 assert(pdl->type == Type1);
538 t1 = pdl->typeinfo.Type1;
540 if(index < t1->glyph_sent_size) {
541 if(t1->glyph_sent[index])
544 t1->glyph_sent_size = (index / GLYPH_SENT_INC + 1) * GLYPH_SENT_INC;
545 t1->glyph_sent = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
547 t1->glyph_sent_size * sizeof(*(t1->glyph_sent)));
550 outline.num_conts = 0;
551 outline.flags = NULL;
552 outline.end_pts = NULL;
554 get_hmetrics(physDev->hdc, index, &outline.lsb, &outline.advance);
556 if(!append_glyph_outline(physDev->hdc, index, &outline)) return FALSE;
558 charstring = str_init(100);
559 curpos.x = outline.lsb;
562 str_add_num(charstring, curpos.x);
563 str_add_num(charstring, outline.advance);
564 str_add_cmd(charstring, hsbw);
566 for(cur_pt = 0, cont = 0; cont < outline.num_conts; cont++)
568 POINT start_pos = outline.pts[cur_pt++];
569 WORD end_pt = outline.end_pts[cont];
570 POINT curve_pts[3] = {{0,0},{0,0},{0,0}};
572 str_add_point(charstring, start_pos, &curpos);
573 str_add_cmd(charstring, rmoveto);
575 for(; cur_pt <= end_pt; cur_pt++)
577 if(on_point(&outline, cur_pt))
579 str_add_point(charstring, outline.pts[cur_pt], &curpos);
580 str_add_cmd(charstring, rlineto);
584 BOOL added_next = FALSE;
586 /* temporarily store the start pt in curve_pts[0] */
587 if(on_point(&outline, cur_pt - 1))
588 curve_pts[0] = outline.pts[cur_pt - 1];
589 else /* last pt was off curve too, so the previous curve's
590 end pt was constructed */
591 curve_pts[0] = curve_pts[2];
595 if(on_point(&outline, cur_pt + 1))
597 curve_pts[2] = outline.pts[cur_pt + 1];
600 else /* next pt is off curve too, so construct the end pt from the
601 average of the two */
603 curve_pts[2].x = (outline.pts[cur_pt].x + outline.pts[cur_pt + 1].x + 1) / 2;
604 curve_pts[2].y = (outline.pts[cur_pt].y + outline.pts[cur_pt + 1].y + 1) / 2;
607 else /* last pt of the contour is off curve, so the end pt is the
608 start pt of the contour */
609 curve_pts[2] = start_pos;
611 curve_pts[0].x = (curve_pts[0].x + 2 * outline.pts[cur_pt].x + 1) / 3;
612 curve_pts[0].y = (curve_pts[0].y + 2 * outline.pts[cur_pt].y + 1) / 3;
614 curve_pts[1].x = (curve_pts[2].x + 2 * outline.pts[cur_pt].x + 1) / 3;
615 curve_pts[1].y = (curve_pts[2].y + 2 * outline.pts[cur_pt].y + 1) / 3;
617 str_add_point(charstring, curve_pts[0], &curpos);
618 str_add_point(charstring, curve_pts[1], &curpos);
619 str_add_point(charstring, curve_pts[2], &curpos);
620 str_add_cmd(charstring, rrcurveto);
621 if(added_next) cur_pt++;
624 str_add_cmd(charstring, closepath);
626 str_add_cmd(charstring, endchar);
628 HeapFree(GetProcessHeap(), 0, outline.pts);
629 HeapFree(GetProcessHeap(), 0, outline.end_pts);
630 HeapFree(GetProcessHeap(), 0, outline.flags);
632 buf = HeapAlloc(GetProcessHeap(), 0, sizeof(glyph_def_begin) +
633 strlen(pdl->ps_name) + strlen(glyph_name) + 100);
635 sprintf(buf, "%%%%glyph %04x\n", index);
636 PSDRV_WriteSpool(physDev, buf, strlen(buf));
638 len = str_get_bytes(charstring, &bytes);
639 sprintf(buf, glyph_def_begin, pdl->ps_name, glyph_name, len);
640 PSDRV_WriteSpool(physDev, buf, strlen(buf));
641 PSDRV_WriteBytes(physDev, bytes, len);
642 sprintf(buf, glyph_def_end);
643 PSDRV_WriteSpool(physDev, buf, strlen(buf));
644 str_free(charstring);
646 t1->glyph_sent[index] = TRUE;
647 HeapFree(GetProcessHeap(), 0, buf);
651 void T1_free(TYPE1 *t1)
653 HeapFree(GetProcessHeap(), 0, t1->glyph_sent);
654 HeapFree(GetProcessHeap(), 0, t1);