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 #define MS_MAKE_TAG( _x1, _x2, _x3, _x4 ) \
  38           ( ( (DWORD)_x4 << 24 ) |     \
  39             ( (DWORD)_x3 << 16 ) |     \
  40             ( (DWORD)_x2 <<  8 ) |     \
  41               (DWORD)_x1         )
  42
  43 #define GET_BE_WORD(ptr)  MAKEWORD( ((BYTE *)(ptr))[1], ((BYTE *)(ptr))[0] )
  44 #define GET_BE_DWORD(ptr) ((DWORD)MAKELONG( GET_BE_WORD(&((WORD *)(ptr))[1]), \
  45                                             GET_BE_WORD(&((WORD *)(ptr))[0]) ))
  46
  47 /****************************************************************************
  48  *  get_download_name
  49  */
  50 static void get_download_name(PHYSDEV dev, LPOUTLINETEXTMETRICA potm, char **str)
  51 {
  52     static const char reserved_chars[] = " %/(){}[]<>\n\r\t\b\f";
  53     int len;
  54     char *p;
  55     DWORD size;
  56
  57     size = GetFontData(dev->hdc, MS_MAKE_TAG('n','a','m','e'), 0, NULL, 0);
  58     if(size != 0 && size != GDI_ERROR)
  59     {
  60         BYTE *name = HeapAlloc(GetProcessHeap(), 0, size);
  61         if(name)
  62         {
  63             USHORT count, i;
  64             BYTE *strings;
  65             struct
  66             {
  67                 USHORT platform_id;
  68                 USHORT encoding_id;
  69                 USHORT language_id;
  70                 USHORT name_id;
  71                 USHORT length;
  72                 USHORT offset;
  73             } *name_record;
  74
  75             GetFontData(dev->hdc, MS_MAKE_TAG('n','a','m','e'), 0, name, size);
  76             count = GET_BE_WORD(name + 2);
  77             strings = name + GET_BE_WORD(name + 4);
  78             name_record = (typeof(name_record))(name + 6);
  79             for(i = 0; i < count; i++, name_record++)
  80             {
  81                 name_record->platform_id = GET_BE_WORD(&name_record->platform_id);
  82                 name_record->encoding_id = GET_BE_WORD(&name_record->encoding_id);
  83                 name_record->language_id = GET_BE_WORD(&name_record->language_id);
  84                 name_record->name_id     = GET_BE_WORD(&name_record->name_id);
  85                 name_record->length      = GET_BE_WORD(&name_record->length);
  86                 name_record->offset      = GET_BE_WORD(&name_record->offset);
  87
  88                 if(name_record->platform_id == 1 && name_record->encoding_id == 0 &&
  89                    name_record->language_id == 0 && name_record->name_id == 6)
  90                 {
  91                     TRACE("Got Mac PS name %s\n", debugstr_an((char*)strings + name_record->offset, name_record->length));
  92                     *str = HeapAlloc(GetProcessHeap(), 0, name_record->length + 1);
  93                     memcpy(*str, strings + name_record->offset, name_record->length);
  94                     *(*str + name_record->length) = '\0';
  95                     HeapFree(GetProcessHeap(), 0, name);
  96                     goto done;
  97                 }
  98                 if(name_record->platform_id == 3 && name_record->encoding_id == 1 &&
  99                    name_record->language_id == 0x409 && name_record->name_id == 6)
 100                 {
 101                     WCHAR *unicode = HeapAlloc(GetProcessHeap(), 0, name_record->length + 2);
 102                     DWORD len;
 103                     int c;
 104
 105                     for(c = 0; c < name_record->length / 2; c++)
 106                         unicode[c] = GET_BE_WORD(strings + name_record->offset + c * 2);
 107                     unicode[c] = 0;
 108                     TRACE("Got Windows PS name %s\n", debugstr_w(unicode));
 109                     len = WideCharToMultiByte(1252, 0, unicode, -1, NULL, 0, NULL, NULL);
 110                     *str = HeapAlloc(GetProcessHeap(), 0, len);
 111                     WideCharToMultiByte(1252, 0, unicode, -1, *str, len, NULL, NULL);
 112                     HeapFree(GetProcessHeap(), 0, unicode);
 113                     HeapFree(GetProcessHeap(), 0, name);
 114                     goto done;
 115                 }
 116             }
 117             TRACE("Unable to find PostScript name\n");
 118             HeapFree(GetProcessHeap(), 0, name);
 119         }
 120     }
 121
 122     len = strlen((char*)potm + (ptrdiff_t)potm->otmpFaceName) + 1;
 123     *str = HeapAlloc(GetProcessHeap(),0,len);
 124     strcpy(*str, (char*)potm + (ptrdiff_t)potm->otmpFaceName);
 125
 126 done:
 127     for (p = *str; *p; p++) if (strchr( reserved_chars, *p )) *p = '_';
 128 }
 129
 130 /****************************************************************************
 131  *  is_font_downloaded
 132  */
 133 static DOWNLOAD *is_font_downloaded(PSDRV_PDEVICE *physDev, char *ps_name)
 134 {
 135     DOWNLOAD *pdl;
 136
 137     for(pdl = physDev->downloaded_fonts; pdl; pdl = pdl->next)
 138         if(!strcmp(pdl->ps_name, ps_name))
 139             break;
 140     return pdl;
 141 }
 142
 143 /****************************************************************************
 144  *  is_room_for_font
 145  */
 146 static BOOL is_room_for_font(PSDRV_PDEVICE *physDev)
 147 {
 148     DOWNLOAD *pdl;
 149     int count = 0;
 150
 151     /* FIXME: should consider vm usage of each font and available printer memory.
 152        For now we allow up to two fonts to be downloaded at a time */
 153     for(pdl = physDev->downloaded_fonts; pdl; pdl = pdl->next)
 154         count++;
 155
 156     if(count > 1)
 157         return FALSE;
 158     return TRUE;
 159 }
 160
 161 /****************************************************************************
 162  *  get_bbox
 163  *
 164  * This retrieves the bounding box of the font in font units as well as
 165  * the size of the emsquare.  To avoid having to worry about mapping mode and
 166  * the font size we'll get the data directly from the TrueType HEAD table rather
 167  * than using GetOutlineTextMetrics.
 168  */
 169 static BOOL get_bbox(HDC hdc, RECT *rc, UINT *emsize)
 170 {
 171     BYTE head[54]; /* the head table is 54 bytes long */
 172
 173     if(GetFontData(hdc, MS_MAKE_TAG('h','e','a','d'), 0, head, sizeof(head)) == GDI_ERROR)
 174     {
 175         ERR("Can't retrieve head table\n");
 176         return FALSE;
 177     }
 178     *emsize = GET_BE_WORD(head + 18); /* unitsPerEm */
 179     if(rc)
 180     {
 181         rc->left   = (signed short)GET_BE_WORD(head + 36); /* xMin */
 182         rc->bottom = (signed short)GET_BE_WORD(head + 38); /* yMin */
 183         rc->right  = (signed short)GET_BE_WORD(head + 40); /* xMax */
 184         rc->top    = (signed short)GET_BE_WORD(head + 42); /* yMax */
 185     }
 186     return TRUE;
 187 }
 188
 189 /****************************************************************************
 190  *  PSDRV_SelectDownloadFont
 191  *
 192  *  Set up physDev->font for a downloadable font
 193  *
 194  */
 195 BOOL PSDRV_SelectDownloadFont(PHYSDEV dev)
 196 {
 197     PSDRV_PDEVICE *physDev = get_psdrv_dev( dev );
 198
 199     physDev->font.fontloc = Download;
 200     physDev->font.fontinfo.Download = NULL;
 201
 202     return TRUE;
 203 }
 204
 205 static UINT calc_ppem_for_height(HDC hdc, LONG height)
 206 {
 207     BYTE os2[78]; /* size of version 0 table */
 208     BYTE hhea[8]; /* just enough to get the ascender and descender */
 209     LONG ascent = 0, descent = 0;
 210     UINT emsize;
 211
 212     if(height < 0) return -height;
 213
 214     if(GetFontData(hdc, MS_MAKE_TAG('O','S','/','2'), 0, os2, sizeof(os2)) == sizeof(os2))
 215     {
 216         ascent  = GET_BE_WORD(os2 + 74); /* usWinAscent */
 217         descent = GET_BE_WORD(os2 + 76); /* usWinDescent */
 218     }
 219
 220     if(ascent + descent == 0)
 221     {
 222         if(GetFontData(hdc, MS_MAKE_TAG('h','h','e','a'), 0, hhea, sizeof(hhea)) == sizeof(hhea))
 223         {
 224             ascent  =  (signed short)GET_BE_WORD(hhea + 4); /* Ascender */
 225             descent = -(signed short)GET_BE_WORD(hhea + 6); /* Descender */
 226         }
 227     }
 228
 229     if(ascent + descent == 0) return height;
 230
 231     get_bbox(hdc, NULL, &emsize);
 232
 233     return MulDiv(emsize, height, ascent + descent);
 234 }
 235
 236 static inline float ps_round(float f)
 237 {
 238     return (f > 0) ? (f + 0.5) : (f - 0.5);
 239 }
 240
 241 static BOOL is_fake_italic( HDC hdc )
 242 {
 243     TEXTMETRICW tm;
 244     BYTE head[54]; /* the head table is 54 bytes long */
 245     WORD mac_style;
 246
 247     GetTextMetricsW( hdc, &tm );
 248     if (!tm.tmItalic) return FALSE;
 249
 250     if (GetFontData( hdc, MS_MAKE_TAG('h','e','a','d'), 0, head, sizeof(head) ) == GDI_ERROR)
 251         return FALSE;
 252
 253     mac_style = GET_BE_WORD( head + 44 );
 254     TRACE( "mac style %04x\n", mac_style );
 255     return !(mac_style & 2);
 256 }
 257
 258 /****************************************************************************
 259  *  PSDRV_WriteSetDownloadFont
 260  *
 261  *  Write setfont for download font.
 262  *
 263  */
 264 BOOL PSDRV_WriteSetDownloadFont(PHYSDEV dev)
 265 {
 266     PSDRV_PDEVICE *physDev = get_psdrv_dev( dev );
 267     char *ps_name;
 268     LPOUTLINETEXTMETRICA potm;
 269     DWORD len = GetOutlineTextMetricsA(dev->hdc, 0, NULL);
 270     DOWNLOAD *pdl;
 271     LOGFONTW lf;
 272     UINT ppem;
 273     XFORM xform;
 274
 275     assert(physDev->font.fontloc == Download);
 276
 277     if (!GetObjectW( GetCurrentObject(dev->hdc, OBJ_FONT), sizeof(lf), &lf ))
 278         return FALSE;
 279
 280     potm = HeapAlloc(GetProcessHeap(), 0, len);
 281     if (!potm)
 282         return FALSE;
 283
 284     GetOutlineTextMetricsA(dev->hdc, len, potm);
 285
 286     get_download_name(dev, potm, &ps_name);
 287     physDev->font.fontinfo.Download = is_font_downloaded(physDev, ps_name);
 288
 289     ppem = calc_ppem_for_height(dev->hdc, lf.lfHeight);
 290
 291     /* Retrieve the world -> device transform */
 292     GetTransform(dev->hdc, 0x204, &xform);
 293
 294     if(GetGraphicsMode(dev->hdc) == GM_COMPATIBLE)
 295     {
 296         if (xform.eM22 < 0) physDev->font.escapement = -physDev->font.escapement;
 297         xform.eM11 = xform.eM22 = fabs(xform.eM22);
 298         xform.eM21 = xform.eM12 = 0;
 299     }
 300
 301     physDev->font.size.xx = ps_round(ppem * xform.eM11);
 302     physDev->font.size.xy = ps_round(ppem * xform.eM12);
 303     physDev->font.size.yx = -ps_round(ppem * xform.eM21);
 304     physDev->font.size.yy = -ps_round(ppem * xform.eM22);
 305
 306     physDev->font.underlineThickness = potm->otmsUnderscoreSize;
 307     physDev->font.underlinePosition = potm->otmsUnderscorePosition;
 308     physDev->font.strikeoutThickness = potm->otmsStrikeoutSize;
 309     physDev->font.strikeoutPosition = potm->otmsStrikeoutPosition;
 310
 311     if(physDev->font.fontinfo.Download == NULL) {
 312         RECT bbox;
 313         UINT emsize;
 314
 315         if (!get_bbox(dev->hdc, &bbox, &emsize)) {
 316             HeapFree(GetProcessHeap(), 0, potm);
 317             return FALSE;
 318         }
 319         if(!is_room_for_font(physDev))
 320             PSDRV_EmptyDownloadList(dev, TRUE);
 321
 322         pdl = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*pdl));
 323         pdl->ps_name = HeapAlloc(GetProcessHeap(), 0, strlen(ps_name)+1);
 324         strcpy(pdl->ps_name, ps_name);
 325         pdl->next = NULL;
 326
 327         if(physDev->pi->ppd->TTRasterizer == RO_Type42) {
 328             pdl->typeinfo.Type42 = T42_download_header(dev, ps_name, &bbox, emsize);
 329             pdl->type = Type42;
 330         }
 331         if(pdl->typeinfo.Type42 == NULL) {
 332             pdl->typeinfo.Type1 = T1_download_header(dev, ps_name, &bbox, emsize);
 333             pdl->type = Type1;
 334         }
 335         pdl->next = physDev->downloaded_fonts;
 336         physDev->downloaded_fonts = pdl;
 337         physDev->font.fontinfo.Download = pdl;
 338
 339         if(pdl->type == Type42) {
 340             char g_name[MAX_G_NAME + 1];
 341             get_glyph_name(dev->hdc, 0, g_name);
 342             T42_download_glyph(dev, pdl, 0, g_name);
 343         }
 344     }
 345
 346
 347     PSDRV_WriteSetFont(dev, ps_name, physDev->font.size, physDev->font.escapement,
 348                        is_fake_italic( dev->hdc ));
 349
 350     HeapFree(GetProcessHeap(), 0, ps_name);
 351     HeapFree(GetProcessHeap(), 0, potm);
 352     return TRUE;
 353 }
 354
 355 void get_glyph_name(HDC hdc, WORD index, char *name)
 356 {
 357   /* FIXME */
 358     sprintf(name, "g%04x", index);
 359     return;
 360 }
 361
 362 /****************************************************************************
 363  *  PSDRV_WriteDownloadGlyphShow
 364  *
 365  *  Download and write out a number of glyphs
 366  *
 367  */
 368 BOOL PSDRV_WriteDownloadGlyphShow(PHYSDEV dev, WORD *glyphs,
 369                                   UINT count)
 370 {
 371     PSDRV_PDEVICE *physDev = get_psdrv_dev( dev );
 372     UINT i;
 373     char g_name[MAX_G_NAME + 1];
 374     assert(physDev->font.fontloc == Download);
 375
 376     switch(physDev->font.fontinfo.Download->type) {
 377     case Type42:
 378     for(i = 0; i < count; i++) {
 379         get_glyph_name(dev->hdc, glyphs[i], g_name);
 380         T42_download_glyph(dev, physDev->font.fontinfo.Download, glyphs[i], g_name);
 381         PSDRV_WriteGlyphShow(dev, g_name);
 382     }
 383     break;
 384
 385     case Type1:
 386     for(i = 0; i < count; i++) {
 387         get_glyph_name(dev->hdc, glyphs[i], g_name);
 388         T1_download_glyph(dev, physDev->font.fontinfo.Download, glyphs[i], g_name);
 389         PSDRV_WriteGlyphShow(dev, g_name);
 390     }
 391     break;
 392
 393     default:
 394         ERR("Type = %d\n", physDev->font.fontinfo.Download->type);
 395         assert(0);
 396     }
 397     return TRUE;
 398 }
 399
 400 /****************************************************************************
 401  *  PSDRV_EmptyDownloadList
 402  *
 403  *  Clear the list of downloaded fonts
 404  *
 405  */
 406 BOOL PSDRV_EmptyDownloadList(PHYSDEV dev, BOOL write_undef)
 407 {
 408     PSDRV_PDEVICE *physDev = get_psdrv_dev( dev );
 409     DOWNLOAD *pdl, *old;
 410     static const char undef[] = "/%s findfont 40 scalefont setfont /%s undefinefont\n";
 411     char buf[sizeof(undef) + 200];
 412     const char *default_font = physDev->pi->ppd->DefaultFont ?
 413         physDev->pi->ppd->DefaultFont : "Courier";
 414
 415     if(physDev->font.fontloc == Download) {
 416         physDev->font.set = FALSE;
 417         physDev->font.fontinfo.Download = NULL;
 418     }
 419
 420     pdl = physDev->downloaded_fonts;
 421     physDev->downloaded_fonts = NULL;
 422     while(pdl) {
 423         if(write_undef) {
 424             sprintf(buf, undef, default_font, pdl->ps_name);
 425             PSDRV_WriteSpool(dev, buf, strlen(buf));
 426         }
 427
 428         switch(pdl->type) {
 429         case Type42:
 430             T42_free(pdl->typeinfo.Type42);
 431             break;
 432
 433         case Type1:
 434             T1_free(pdl->typeinfo.Type1);
 435             break;
 436
 437         default:
 438             ERR("Type = %d\n", pdl->type);
 439             assert(0);
 440         }
 441
 442         HeapFree(GetProcessHeap(), 0, pdl->ps_name);
 443         old = pdl;
 444         pdl = pdl->next;
 445         HeapFree(GetProcessHeap(), 0, old);
 446     }
 447     return TRUE;
 448 }