dlls/wineps/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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20 #include <string.h>
  21 #include <stdlib.h>
  22 #include <assert.h>
  23 #include <stdarg.h>
  24 #include <stdio.h>
  25
  26 #include "windef.h"
  27 #include "winbase.h"
  28 #include "winerror.h"
  29 #include "wingdi.h"
  30 #include "winspool.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(PSDRV_PDEVICE *physDev, LPOUTLINETEXTMETRICA
  51                               potm, char **str)
  52 {
  53     int len;
  54     char *p;
  55     len = strlen((char*)potm + (ptrdiff_t)potm->otmpFullName) + 1;
  56     *str = HeapAlloc(GetProcessHeap(),0,len);
  57     strcpy(*str, (char*)potm + (ptrdiff_t)potm->otmpFullName);
  58
  59     p = *str;
  60     while((p = strchr(p, ' ')))
  61         *p = '_';
  62
  63     return;
  64 }
  65
  66 /****************************************************************************
  67  *  is_font_downloaded
  68  */
  69 static DOWNLOAD *is_font_downloaded(PSDRV_PDEVICE *physDev, char *ps_name)
  70 {
  71     DOWNLOAD *pdl;
  72
  73     for(pdl = physDev->downloaded_fonts; pdl; pdl = pdl->next)
  74         if(!strcmp(pdl->ps_name, ps_name))
  75             break;
  76     return pdl;
  77 }
  78
  79 /****************************************************************************
  80  *  is_room_for_font
  81  */
  82 static BOOL is_room_for_font(PSDRV_PDEVICE *physDev)
  83 {
  84     DOWNLOAD *pdl;
  85     int count = 0;
  86
  87     /* FIXME: should consider vm usage of each font and available printer memory.
  88        For now we allow upto two fonts to be downloaded at a time */
  89     for(pdl = physDev->downloaded_fonts; pdl; pdl = pdl->next)
  90         count++;
  91
  92     if(count > 1)
  93         return FALSE;
  94     return TRUE;
  95 }
  96
  97 /****************************************************************************
  98  *  get_bbox
  99  *
 100  * This retrieves the bounding box of the font in font units as well as
 101  * the size of the emsquare.  To avoid having to worry about mapping mode and
 102  * the font size we'll get the data directly from the TrueType HEAD table rather
 103  * than using GetOutlineTextMetrics.
 104  */
 105 static BOOL get_bbox(PSDRV_PDEVICE *physDev, RECT *rc, UINT *emsize)
 106 {
 107     BYTE head[54]; /* the head table is 54 bytes long */
 108
 109     if(GetFontData(physDev->hdc, MS_MAKE_TAG('h','e','a','d'), 0, head,
 110                    sizeof(head)) == GDI_ERROR) {
 111         ERR("Can't retrieve head table\n");
 112         return FALSE;
 113     }
 114     *emsize = GET_BE_WORD(head + 18); /* unitsPerEm */
 115     rc->left = (signed short)GET_BE_WORD(head + 36); /* xMin */
 116     rc->bottom = (signed short)GET_BE_WORD(head + 38); /* yMin */
 117     rc->right = (signed short)GET_BE_WORD(head + 40); /* xMax */
 118     rc->top = (signed short)GET_BE_WORD(head + 42); /* yMax */
 119     return TRUE;
 120 }
 121
 122 /****************************************************************************
 123  *  PSDRV_SelectDownloadFont
 124  *
 125  *  Set up physDev->font for a downloadable font
 126  *
 127  */
 128 BOOL PSDRV_SelectDownloadFont(PSDRV_PDEVICE *physDev)
 129 {
 130     char *ps_name;
 131     LPOUTLINETEXTMETRICA potm;
 132     DWORD len = GetOutlineTextMetricsA(physDev->hdc, 0, NULL);
 133
 134     potm = HeapAlloc(GetProcessHeap(), 0, len);
 135     GetOutlineTextMetricsA(physDev->hdc, len, potm);
 136     get_download_name(physDev, potm, &ps_name);
 137
 138     physDev->font.fontloc = Download;
 139     physDev->font.fontinfo.Download = is_font_downloaded(physDev, ps_name);
 140
 141     physDev->font.size = abs(PSDRV_YWStoDS(physDev, /* ppem */
 142                                        potm->otmTextMetrics.tmAscent +
 143                                        potm->otmTextMetrics.tmDescent -
 144                                        potm->otmTextMetrics.tmInternalLeading));
 145     physDev->font.underlineThickness = potm->otmsUnderscoreSize;
 146     physDev->font.underlinePosition = potm->otmsUnderscorePosition;
 147     physDev->font.strikeoutThickness = potm->otmsStrikeoutSize;
 148     physDev->font.strikeoutPosition = potm->otmsStrikeoutPosition;
 149
 150     HeapFree(GetProcessHeap(), 0, ps_name);
 151     HeapFree(GetProcessHeap(), 0, potm);
 152     return TRUE;
 153 }
 154
 155 /****************************************************************************
 156  *  PSDRV_WriteSetDownloadFont
 157  *
 158  *  Write setfont for download font.
 159  *
 160  */
 161 BOOL PSDRV_WriteSetDownloadFont(PSDRV_PDEVICE *physDev)
 162 {
 163     char *ps_name;
 164     LPOUTLINETEXTMETRICA potm;
 165     DWORD len = GetOutlineTextMetricsA(physDev->hdc, 0, NULL);
 166     DOWNLOAD *pdl;
 167
 168     assert(physDev->font.fontloc == Download);
 169
 170     potm = HeapAlloc(GetProcessHeap(), 0, len);
 171     GetOutlineTextMetricsA(physDev->hdc, len, potm);
 172
 173     get_download_name(physDev, potm, &ps_name);
 174
 175     if(physDev->font.fontinfo.Download == NULL) {
 176         RECT bbox;
 177         UINT emsize;
 178
 179         pdl = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*pdl));
 180         pdl->ps_name = HeapAlloc(GetProcessHeap(), 0, strlen(ps_name)+1);
 181         strcpy(pdl->ps_name, ps_name);
 182         pdl->next = NULL;
 183
 184         get_bbox(physDev, &bbox, &emsize);
 185         if(!is_room_for_font(physDev))
 186             PSDRV_EmptyDownloadList(physDev, TRUE);
 187
 188         if(physDev->pi->ppd->TTRasterizer == RO_Type42) {
 189             pdl->typeinfo.Type42 = T42_download_header(physDev, ps_name, &bbox, emsize);
 190             pdl->type = Type42;
 191         }
 192         if(pdl->typeinfo.Type42 == NULL) {
 193             pdl->typeinfo.Type1 = T1_download_header(physDev, ps_name, &bbox, emsize);
 194             pdl->type = Type1;
 195         }
 196         pdl->next = physDev->downloaded_fonts;
 197         physDev->downloaded_fonts = pdl;
 198         physDev->font.fontinfo.Download = pdl;
 199
 200         if(pdl->type == Type42) {
 201             char g_name[MAX_G_NAME + 1];
 202             get_glyph_name(physDev->hdc, 0, g_name);
 203             T42_download_glyph(physDev, pdl, 0, g_name);
 204         }
 205     }
 206
 207
 208     PSDRV_WriteSetFont(physDev, ps_name, physDev->font.size,
 209                        physDev->font.escapement);
 210
 211     HeapFree(GetProcessHeap(), 0, ps_name);
 212     HeapFree(GetProcessHeap(), 0, potm);
 213     return TRUE;
 214 }
 215
 216 void get_glyph_name(HDC hdc, WORD index, char *name)
 217 {
 218   /* FIXME */
 219     sprintf(name, "g%04x", index);
 220     return;
 221 }
 222
 223 /****************************************************************************
 224  *  PSDRV_WriteDownloadGlyphShow
 225  *
 226  *  Download and write out a number of glyphs
 227  *
 228  */
 229 BOOL PSDRV_WriteDownloadGlyphShow(PSDRV_PDEVICE *physDev, WORD *glyphs,
 230                                   UINT count)
 231 {
 232     UINT i;
 233     char g_name[MAX_G_NAME + 1];
 234     assert(physDev->font.fontloc == Download);
 235
 236     switch(physDev->font.fontinfo.Download->type) {
 237     case Type42:
 238     for(i = 0; i < count; i++) {
 239         get_glyph_name(physDev->hdc, glyphs[i], g_name);
 240         T42_download_glyph(physDev, physDev->font.fontinfo.Download,
 241                            glyphs[i], g_name);
 242         PSDRV_WriteGlyphShow(physDev, g_name);
 243     }
 244     break;
 245
 246     case Type1:
 247     for(i = 0; i < count; i++) {
 248         get_glyph_name(physDev->hdc, glyphs[i], g_name);
 249         T1_download_glyph(physDev, physDev->font.fontinfo.Download,
 250                           glyphs[i], g_name);
 251         PSDRV_WriteGlyphShow(physDev, g_name);
 252     }
 253     break;
 254
 255     default:
 256         ERR("Type = %d\n", physDev->font.fontinfo.Download->type);
 257         assert(0);
 258     }
 259     return TRUE;
 260 }
 261
 262 /****************************************************************************
 263  *  PSDRV_EmptyDownloadList
 264  *
 265  *  Clear the list of downloaded fonts
 266  *
 267  */
 268 BOOL PSDRV_EmptyDownloadList(PSDRV_PDEVICE *physDev, BOOL write_undef)
 269 {
 270     DOWNLOAD *pdl, *old;
 271     static const char undef[] = "/%s findfont 40 scalefont setfont /%s undefinefont\n";
 272     char buf[sizeof(undef) + 200];
 273     char *default_font = physDev->pi->ppd->DefaultFont ?
 274         physDev->pi->ppd->DefaultFont : "Courier";
 275
 276     if(physDev->font.fontloc == Download) {
 277         physDev->font.set = FALSE;
 278         physDev->font.fontinfo.Download = NULL;
 279     }
 280
 281     pdl = physDev->downloaded_fonts;
 282     physDev->downloaded_fonts = NULL;
 283     while(pdl) {
 284         if(write_undef) {
 285             sprintf(buf, undef, default_font, pdl->ps_name);
 286             PSDRV_WriteSpool(physDev, buf, strlen(buf));
 287         }
 288
 289         switch(pdl->type) {
 290         case Type42:
 291             T42_free(pdl->typeinfo.Type42);
 292             break;
 293
 294         case Type1:
 295             T1_free(pdl->typeinfo.Type1);
 296             break;
 297
 298         default:
 299             ERR("Type = %d\n", pdl->type);
 300             assert(0);
 301         }
 302
 303         HeapFree(GetProcessHeap(), 0, pdl->ps_name);
 304         old = pdl;
 305         pdl = pdl->next;
 306         HeapFree(GetProcessHeap(), 0, old);
 307     }
 308     return TRUE;
 309 }