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