dlls/wineps.drv/download.c

   1 /*
   2  *      PostScript driver downloadable font functions
   3  *
   4  *      Copyright 2002  Huw D M Davies for CodeWeavers
   5  *
   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.
  10  *
  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.
  15  *
  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
  19  */
  20 #include <string.h>
  21 #include <stdlib.h>
  22 #include <assert.h>
  23 #include <math.h>
  24 #include <stdarg.h>
  25 #include <stdio.h>
  26
  27 #include "windef.h"
  28 #include "winbase.h"
  29 #include "wingdi.h"
  30 #include "winnls.h"
  31
  32 #include "psdrv.h"
  33 #include "wine/debug.h"
  34
  35 WINE_DEFAULT_DEBUG_CHANNEL(psdrv);
  36
  37 BOOL WINAPI GetTransform( HDC hdc, DWORD which, XFORM *xform );
  38
  39 #define MS_MAKE_TAG( _x1, _x2, _x3, _x4 ) \
  40           ( ( (DWORD)_x4 << 24 ) |     \
  41             ( (DWORD)_x3 << 16 ) |     \
  42             ( (DWORD)_x2 <<  8 ) |     \
  43               (DWORD)_x1         )
  44
  45 #define GET_BE_WORD(ptr)  MAKEWORD( ((BYTE *)(ptr))[1], ((BYTE *)(ptr))[0] )
  46 #define GET_BE_DWORD(ptr) ((DWORD)MAKELONG( GET_BE_WORD(&((WORD *)(ptr))[1]), \
  47                                             GET_BE_WORD(&((WORD *)(ptr))[0]) ))
  48
  49 /****************************************************************************
  50  *  get_download_name
  51  */
  52 static void get_download_name(PSDRV_PDEVICE *physDev, LPOUTLINETEXTMETRICA
  53                               potm, char **str)
  54 {
  55     int len;
  56     char *p;
  57     DWORD size;
  58
  59     size = GetFontData(physDev->hdc, MS_MAKE_TAG('n','a','m','e'), 0, NULL, 0);
  60     if(size != 0 && size != GDI_ERROR)
  61     {
  62         BYTE *name = HeapAlloc(GetProcessHeap(), 0, size);
  63         if(name)
  64         {
  65             USHORT count, i;
  66             BYTE *strings;
  67             struct
  68             {
  69                 USHORT platform_id;
  70                 USHORT encoding_id;
  71                 USHORT language_id;
  72                 USHORT name_id;
  73                 USHORT length;
  74                 USHORT offset;
  75             } *name_record;
  76
  77             GetFontData(physDev->hdc, MS_MAKE_TAG('n','a','m','e'), 0, name, size);
  78             count = GET_BE_WORD(name + 2);
  79             strings = name + GET_BE_WORD(name + 4);
  80             name_record = (typeof(name_record))(name + 6);
  81             for(i = 0; i < count; i++, name_record++)
  82             {
  83                 name_record->platform_id = GET_BE_WORD(&name_record->platform_id);
  84                 name_record->encoding_id = GET_BE_WORD(&name_record->encoding_id);
  85                 name_record->language_id = GET_BE_WORD(&name_record->language_id);
  86                 name_record->name_id     = GET_BE_WORD(&name_record->name_id);
  87                 name_record->length      = GET_BE_WORD(&name_record->length);
  88                 name_record->offset      = GET_BE_WORD(&name_record->offset);
  89
  90                 if(name_record->platform_id == 1 && name_record->encoding_id == 0 &&
  91                    name_record->language_id == 0 && name_record->name_id == 6)
  92                 {
  93                     TRACE("Got Mac PS name %s\n", debugstr_an((char*)strings + name_record->offset, name_record->length));
  94                     *str = HeapAlloc(GetProcessHeap(), 0, name_record->length + 1);
  95                     memcpy(*str, strings + name_record->offset, name_record->length);
  96                     *(*str + name_record->length) = '\0';
  97                     HeapFree(GetProcessHeap(), 0, name);
  98                     return;
  99                 }
 100                 if(name_record->platform_id == 3 && name_record->encoding_id == 1 &&
 101                    name_record->language_id == 0x409 && name_record->name_id == 6)
 102                 {
 103                     WCHAR *unicode = HeapAlloc(GetProcessHeap(), 0, name_record->length + 2);
 104                     DWORD len;
 105                     int c;
 106
 107                     for(c = 0; c < name_record->length / 2; c++)
 108                         unicode[c] = GET_BE_WORD(strings + name_record->offset + c * 2);
 109                     unicode[c] = 0;
 110                     TRACE("Got Windows PS name %s\n", debugstr_w(unicode));
 111                     len = WideCharToMultiByte(1252, 0, unicode, -1, NULL, 0, NULL, NULL);
 112                     *str = HeapAlloc(GetProcessHeap(), 0, len);
 113                     WideCharToMultiByte(1252, 0, unicode, -1, *str, len, NULL, NULL);
 114                     HeapFree(GetProcessHeap(), 0, unicode);
 115                     HeapFree(GetProcessHeap(), 0, name);
 116                     return;
 117                 }
 118             }
 119             TRACE("Unable to find PostScript name\n");
 120             HeapFree(GetProcessHeap(), 0, name);
 121         }
 122     }
 123
 124     len = strlen((char*)potm + (ptrdiff_t)potm->otmpFullName) + 1;
 125     *str = HeapAlloc(GetProcessHeap(),0,len);
 126     strcpy(*str, (char*)potm + (ptrdiff_t)potm->otmpFullName);
 127
 128     p = *str;
 129     while((p = strchr(p, ' ')))
 130         *p = '_';
 131
 132     return;
 133 }
 134
 135 /****************************************************************************
 136  *  is_font_downloaded
 137  */
 138 static DOWNLOAD *is_font_downloaded(PSDRV_PDEVICE *physDev, char *ps_name)
 139 {
 140     DOWNLOAD *pdl;
 141
 142     for(pdl = physDev->downloaded_fonts; pdl; pdl = pdl->next)
 143         if(!strcmp(pdl->ps_name, ps_name))
 144             break;
 145     return pdl;
 146 }
 147
 148 /****************************************************************************
 149  *  is_room_for_font
 150  */
 151 static BOOL is_room_for_font(PSDRV_PDEVICE *physDev)
 152 {
 153     DOWNLOAD *pdl;
 154     int count = 0;
 155
 156     /* FIXME: should consider vm usage of each font and available printer memory.
 157        For now we allow up to two fonts to be downloaded at a time */
 158     for(pdl = physDev->downloaded_fonts; pdl; pdl = pdl->next)
 159         count++;
 160
 161     if(count > 1)
 162         return FALSE;
 163     return TRUE;
 164 }
 165
 166 /****************************************************************************
 167  *  get_bbox
 168  *
 169  * This retrieves the bounding box of the font in font units as well as
 170  * the size of the emsquare.  To avoid having to worry about mapping mode and
 171  * the font size we'll get the data directly from the TrueType HEAD table rather
 172  * than using GetOutlineTextMetrics.
 173  */
 174 static BOOL get_bbox(HDC hdc, RECT *rc, UINT *emsize)
 175 {
 176     BYTE head[54]; /* the head table is 54 bytes long */
 177
 178     if(GetFontData(hdc, MS_MAKE_TAG('h','e','a','d'), 0, head, sizeof(head)) == GDI_ERROR)
 179     {
 180         ERR("Can't retrieve head table\n");
 181         return FALSE;
 182     }
 183     *emsize = GET_BE_WORD(head + 18); /* unitsPerEm */
 184     if(rc)
 185     {
 186         rc->left   = (signed short)GET_BE_WORD(head + 36); /* xMin */
 187         rc->bottom = (signed short)GET_BE_WORD(head + 38); /* yMin */
 188         rc->right  = (signed short)GET_BE_WORD(head + 40); /* xMax */
 189         rc->top    = (signed short)GET_BE_WORD(head + 42); /* yMax */
 190     }
 191     return TRUE;
 192 }
 193
 194 /****************************************************************************
 195  *  PSDRV_SelectDownloadFont
 196  *
 197  *  Set up physDev->font for a downloadable font
 198  *
 199  */
 200 BOOL PSDRV_SelectDownloadFont(PSDRV_PDEVICE *physDev)
 201 {
 202     physDev->font.fontloc = Download;
 203     physDev->font.fontinfo.Download = NULL;
 204
 205     return TRUE;
 206 }
 207
 208 static UINT calc_ppem_for_height(HDC hdc, LONG height)
 209 {
 210     BYTE os2[78]; /* size of version 0 table */
 211     BYTE hhea[8]; /* just enough to get the ascender and descender */
 212     LONG ascent = 0, descent = 0;
 213     UINT emsize;
 214
 215     if(height < 0) return -height;
 216
 217     if(GetFontData(hdc, MS_MAKE_TAG('O','S','/','2'), 0, os2, sizeof(os2)) == sizeof(os2))
 218     {
 219         ascent  = GET_BE_WORD(os2 + 74); /* usWinAscent */
 220         descent = GET_BE_WORD(os2 + 76); /* usWinDescent */
 221     }
 222
 223     if(ascent + descent == 0)
 224     {
 225         if(GetFontData(hdc, MS_MAKE_TAG('h','h','e','a'), 0, hhea, sizeof(hhea)) == sizeof(hhea))
 226         {
 227             ascent  =  (signed short)GET_BE_WORD(hhea + 4); /* Ascender */
 228             descent = -(signed short)GET_BE_WORD(hhea + 6); /* Descender */
 229         }
 230     }
 231
 232     if(ascent + descent == 0) return height;
 233
 234     get_bbox(hdc, NULL, &emsize);
 235
 236     return MulDiv(emsize, height, ascent + descent);
 237 }
 238
 239 static inline float ps_round(float f)
 240 {
 241     return (f > 0) ? (f + 0.5) : (f - 0.5);
 242 }
 243 /****************************************************************************
 244  *  PSDRV_WriteSetDownloadFont
 245  *
 246  *  Write setfont for download font.
 247  *
 248  */
 249 BOOL PSDRV_WriteSetDownloadFont(PSDRV_PDEVICE *physDev)
 250 {
 251     char *ps_name;
 252     LPOUTLINETEXTMETRICA potm;
 253     DWORD len = GetOutlineTextMetricsA(physDev->hdc, 0, NULL);
 254     DOWNLOAD *pdl;
 255     LOGFONTW lf;
 256     UINT ppem;
 257     XFORM xform;
 258
 259     assert(physDev->font.fontloc == Download);
 260
 261     potm = HeapAlloc(GetProcessHeap(), 0, len);
 262     GetOutlineTextMetricsA(physDev->hdc, len, potm);
 263
 264     get_download_name(physDev, potm, &ps_name);
 265     physDev->font.fontinfo.Download = is_font_downloaded(physDev, ps_name);
 266
 267     if (!GetObjectW( GetCurrentObject(physDev->hdc, OBJ_FONT), sizeof(lf), &lf ))
 268         return FALSE;
 269
 270     ppem = calc_ppem_for_height(physDev->hdc, lf.lfHeight);
 271
 272     /* Retrieve the world -> device transform */
 273     GetTransform(physDev->hdc, 0x204, &xform);
 274
 275     if(GetGraphicsMode(physDev->hdc) == GM_COMPATIBLE)
 276     {
 277         xform.eM11 = xform.eM22 = fabs(xform.eM22);
 278         xform.eM21 = xform.eM12 = 0;
 279     }
 280
 281     physDev->font.size.xx = ps_round(ppem * xform.eM11);
 282     physDev->font.size.xy = ps_round(ppem * xform.eM12);
 283     physDev->font.size.yx = ps_round(ppem * xform.eM21);
 284     physDev->font.size.yy = ps_round(ppem * xform.eM22);
 285
 286     switch(GetMapMode(physDev->hdc))
 287     {
 288     case MM_TEXT:
 289     case MM_ISOTROPIC:
 290     case MM_ANISOTROPIC:
 291         physDev->font.size.yx *= -1;
 292         physDev->font.size.yy *= -1;
 293     }
 294
 295     physDev->font.underlineThickness = potm->otmsUnderscoreSize;
 296     physDev->font.underlinePosition = potm->otmsUnderscorePosition;
 297     physDev->font.strikeoutThickness = potm->otmsStrikeoutSize;
 298     physDev->font.strikeoutPosition = potm->otmsStrikeoutPosition;
 299
 300     if(physDev->font.fontinfo.Download == NULL) {
 301         RECT bbox;
 302         UINT emsize;
 303
 304         if (!get_bbox(physDev->hdc, &bbox, &emsize)) {
 305             HeapFree(GetProcessHeap(), 0, potm);
 306             return FALSE;
 307         }
 308         if(!is_room_for_font(physDev))
 309             PSDRV_EmptyDownloadList(physDev, TRUE);
 310
 311         pdl = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*pdl));
 312         pdl->ps_name = HeapAlloc(GetProcessHeap(), 0, strlen(ps_name)+1);
 313         strcpy(pdl->ps_name, ps_name);
 314         pdl->next = NULL;
 315
 316         if(physDev->pi->ppd->TTRasterizer == RO_Type42) {
 317             pdl->typeinfo.Type42 = T42_download_header(physDev, ps_name, &bbox, emsize);
 318             pdl->type = Type42;
 319         }
 320         if(pdl->typeinfo.Type42 == NULL) {
 321             pdl->typeinfo.Type1 = T1_download_header(physDev, ps_name, &bbox, emsize);
 322             pdl->type = Type1;
 323         }
 324         pdl->next = physDev->downloaded_fonts;
 325         physDev->downloaded_fonts = pdl;
 326         physDev->font.fontinfo.Download = pdl;
 327
 328         if(pdl->type == Type42) {
 329             char g_name[MAX_G_NAME + 1];
 330             get_glyph_name(physDev->hdc, 0, g_name);
 331             T42_download_glyph(physDev, pdl, 0, g_name);
 332         }
 333     }
 334
 335
 336     PSDRV_WriteSetFont(physDev, ps_name, physDev->font.size,
 337                        physDev->font.escapement);
 338
 339     HeapFree(GetProcessHeap(), 0, ps_name);
 340     HeapFree(GetProcessHeap(), 0, potm);
 341     return TRUE;
 342 }
 343
 344 void get_glyph_name(HDC hdc, WORD index, char *name)
 345 {
 346   /* FIXME */
 347     sprintf(name, "g%04x", index);
 348     return;
 349 }
 350
 351 /****************************************************************************
 352  *  PSDRV_WriteDownloadGlyphShow
 353  *
 354  *  Download and write out a number of glyphs
 355  *
 356  */
 357 BOOL PSDRV_WriteDownloadGlyphShow(PSDRV_PDEVICE *physDev, WORD *glyphs,
 358                                   UINT count)
 359 {
 360     UINT i;
 361     char g_name[MAX_G_NAME + 1];
 362     assert(physDev->font.fontloc == Download);
 363
 364     switch(physDev->font.fontinfo.Download->type) {
 365     case Type42:
 366     for(i = 0; i < count; i++) {
 367         get_glyph_name(physDev->hdc, glyphs[i], g_name);
 368         T42_download_glyph(physDev, physDev->font.fontinfo.Download,
 369                            glyphs[i], g_name);
 370         PSDRV_WriteGlyphShow(physDev, g_name);
 371     }
 372     break;
 373
 374     case Type1:
 375     for(i = 0; i < count; i++) {
 376         get_glyph_name(physDev->hdc, glyphs[i], g_name);
 377         T1_download_glyph(physDev, physDev->font.fontinfo.Download,
 378                           glyphs[i], g_name);
 379         PSDRV_WriteGlyphShow(physDev, g_name);
 380     }
 381     break;
 382
 383     default:
 384         ERR("Type = %d\n", physDev->font.fontinfo.Download->type);
 385         assert(0);
 386     }
 387     return TRUE;
 388 }
 389
 390 /****************************************************************************
 391  *  PSDRV_EmptyDownloadList
 392  *
 393  *  Clear the list of downloaded fonts
 394  *
 395  */
 396 BOOL PSDRV_EmptyDownloadList(PSDRV_PDEVICE *physDev, BOOL write_undef)
 397 {
 398     DOWNLOAD *pdl, *old;
 399     static const char undef[] = "/%s findfont 40 scalefont setfont /%s undefinefont\n";
 400     char buf[sizeof(undef) + 200];
 401     const char *default_font = physDev->pi->ppd->DefaultFont ?
 402         physDev->pi->ppd->DefaultFont : "Courier";
 403
 404     if(physDev->font.fontloc == Download) {
 405         physDev->font.set = FALSE;
 406         physDev->font.fontinfo.Download = NULL;
 407     }
 408
 409     pdl = physDev->downloaded_fonts;
 410     physDev->downloaded_fonts = NULL;
 411     while(pdl) {
 412         if(write_undef) {
 413             sprintf(buf, undef, default_font, pdl->ps_name);
 414             PSDRV_WriteSpool(physDev, buf, strlen(buf));
 415         }
 416
 417         switch(pdl->type) {
 418         case Type42:
 419             T42_free(pdl->typeinfo.Type42);
 420             break;
 421
 422         case Type1:
 423             T1_free(pdl->typeinfo.Type1);
 424             break;
 425
 426         default:
 427             ERR("Type = %d\n", pdl->type);
 428             assert(0);
 429         }
 430
 431         HeapFree(GetProcessHeap(), 0, pdl->ps_name);
 432         old = pdl;
 433         pdl = pdl->next;
 434         HeapFree(GetProcessHeap(), 0, old);
 435     }
 436     return TRUE;
 437 }