IABSD.fr/xenocara/app/bdftopcf/bitmap.c

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• Author : matthieu
  Date : 2022-11-06 12:25:44
  Hash : ee53c51e
  Message : Update bdftopcf to version 1.1.1

• app/bdftopcf/bitmap.c

• /*
  
  Copyright 1991, 1998  The Open Group
  
  Permission to use, copy, modify, distribute, and sell this software and its
  documentation for any purpose is hereby granted without fee, provided that
  the above copyright notice appear in all copies and that both that
  copyright notice and this permission notice appear in supporting
  documentation.
  
  The above copyright notice and this permission notice shall be included in
  all copies or substantial portions of the Software.
  
  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
  OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  
  Except as contained in this notice, the name of The Open Group shall not be
  used in advertising or otherwise to promote the sale, use or other dealings
  in this Software without prior written authorization from The Open Group.
  
  */
  
  /*
   * Author:  Keith Packard, MIT X Consortium
   */
  
  #ifdef HAVE_CONFIG_H
  #include <config.h>
  #endif
  
  #include "fntfilst.h"
  #include "bitmap.h"
  
  int
  bitmapGetGlyphs(FontPtr pFont, unsigned long count, unsigned char *chars,
                  FontEncoding charEncoding,
                  unsigned long *glyphCount,        /* RETURN */
                  CharInfoPtr * glyphs)             /* RETURN */
  {
      BitmapFontPtr bitmapFont;
      unsigned int firstCol;
      register unsigned int numCols;
      unsigned int firstRow;
      unsigned int numRows;
      CharInfoPtr *glyphsBase;
      register unsigned int c;
      register CharInfoPtr pci;
      CharInfoPtr **encoding;
      CharInfoPtr pDefault;
  
      bitmapFont = (BitmapFontPtr) pFont->fontPrivate;
      encoding = bitmapFont->encoding;
      pDefault = bitmapFont->pDefault;
      firstCol = pFont->info.firstCol;
      numCols = pFont->info.lastCol - firstCol + 1;
      glyphsBase = glyphs;
      switch (charEncoding) {
  
      case Linear8Bit:
      case TwoD8Bit:
          if (pFont->info.firstRow > 0) {
              if (pDefault)
                  while (count--)
                      *glyphs++ = pDefault;
              break;
          }
          if (pFont->info.allExist && pDefault) {
              while (count--) {
                  c = (*chars++) - firstCol;
                  if (c < numCols)
                      *glyphs++ = ACCESSENCODING(encoding, c);
                  else
                      *glyphs++ = pDefault;
              }
          }
          else {
              while (count--) {
                  c = (*chars++) - firstCol;
                  if (c < numCols && (pci = ACCESSENCODING(encoding, c)))
                      *glyphs++ = pci;
                  else if (pDefault)
                      *glyphs++ = pDefault;
              }
          }
          break;
      case Linear16Bit:
          if (pFont->info.allExist && pDefault) {
              while (count--) {
                  c = *chars++ << 8;
                  c = (c | *chars++) - firstCol;
                  if (c < numCols)
                      *glyphs++ = ACCESSENCODING(encoding, c);
                  else
                      *glyphs++ = pDefault;
              }
          }
          else {
              while (count--) {
                  c = *chars++ << 8;
                  c = (c | *chars++) - firstCol;
                  if (c < numCols && (pci = ACCESSENCODING(encoding, c)))
                      *glyphs++ = pci;
                  else if (pDefault)
                      *glyphs++ = pDefault;
              }
          }
          break;
  
      case TwoD16Bit:
          firstRow = pFont->info.firstRow;
          numRows = pFont->info.lastRow - firstRow + 1;
          while (count--) {
              unsigned int r;
  
              r = (*chars++) - firstRow;
              c = (*chars++) - firstCol;
              if (r < numRows && c < numCols &&
                  (pci = ACCESSENCODING(encoding, r * numCols + c)))
                  *glyphs++ = pci;
              else if (pDefault)
                  *glyphs++ = pDefault;
          }
          break;
      }
      *glyphCount = glyphs - glyphsBase;
      return Successful;
  }
  
  static CharInfoRec nonExistantChar;
  
  int
  bitmapGetMetrics(FontPtr pFont, unsigned long count, unsigned char *chars,
                   FontEncoding charEncoding,
                   unsigned long *glyphCount,        /* RETURN */
                   xCharInfo ** glyphs)              /* RETURN */
  {
      int ret;
      BitmapFontPtr bitmapFont  = (BitmapFontPtr) pFont->fontPrivate;
      CharInfoPtr oldDefault = bitmapFont->pDefault;
  
      bitmapFont->pDefault = &nonExistantChar;
      ret =
          bitmapGetGlyphs(pFont, count, chars, charEncoding, glyphCount,
                          (CharInfoPtr *) glyphs);
      if (ret == Successful) {
          if (bitmapFont->ink_metrics) {
              CharInfoPtr metrics = bitmapFont->metrics;
              xCharInfo *ink_metrics = bitmapFont->ink_metrics;
  
              for (unsigned long i = 0; i < *glyphCount; i++) {
                  if (glyphs[i] != (xCharInfo *) & nonExistantChar)
                      glyphs[i] =
                          ink_metrics + (((CharInfoPtr) glyphs[i]) - metrics);
              }
          }
      }
      bitmapFont->pDefault = oldDefault;
      return ret;
  }