IABSD.fr/xenocara/lib/libXfont/src/bitmap/bitmapfunc.c

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• Author : matthieu
  Date : 2006-11-25 16:46:32
  Hash : 606ceaa6
  Message : import from X.Org 7.2RC1

• lib/libXfont/src/bitmap/bitmapfunc.c

• /* $Xorg: bitmapfunc.c,v 1.5 2001/02/09 02:04:02 xorgcvs Exp $ */
  
  /*
  
  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.
  
  */
  
  /* $XFree86: xc/lib/font/bitmap/bitmapfunc.c,v 3.17 2002/09/19 13:21:58 tsi Exp $ */
  
  /*
   * Author:  Keith Packard, MIT X Consortium
   */
  
  #ifdef HAVE_CONFIG_H
  #include <config.h>
  #endif
  
  /*
   * Translate monolithic #defines to modular definitions
   */
  
  #ifdef PCFFORMAT
  #define XFONT_PCFFORMAT 1
  #endif
  
  #ifdef SNFFORMAT
  #define XFONT_SNFFORMAT 1
  #endif
  
  #ifdef BDFFORMAT
  #define XFONT_BDFFORMAT 1
  #endif
  
  #include <X11/fonts/fntfilst.h>
  #include <X11/fonts/bitmap.h>
  #include <X11/fonts/fontutil.h>
  #include <X11/fonts/bdfint.h>
  #include <X11/fonts/pcf.h>
  #include "snfstr.h"
  
  typedef struct _BitmapFileFunctions {
      int         (*ReadFont) (FontPtr /* pFont */, FontFilePtr /* file */,  
  			     int /* bit */, int /* byte */, 
  			     int /* glyph */, int /* scan */);
      int         (*ReadInfo) (  FontInfoPtr /* pFontInfo */, 
  			       FontFilePtr /* file */ );
  }           BitmapFileFunctionsRec, *BitmapFileFunctionsPtr;
  
  
  /*
   * the readers[] and renderers[] arrays must be in the same order,
   * and also in the same order as scale[] and find_scale[] in bitscale.c
   *
   */
  static BitmapFileFunctionsRec readers[] = {
  #if XFONT_PCFFORMAT
      { pcfReadFont, pcfReadFontInfo} ,
      { pcfReadFont, pcfReadFontInfo} ,
  #ifdef X_GZIP_FONT_COMPRESSION
      { pcfReadFont, pcfReadFontInfo} ,
  #endif
  #endif
  #if XFONT_SNFFORMAT
      { snfReadFont, snfReadFontInfo},
      { snfReadFont, snfReadFontInfo},
  #ifdef X_GZIP_FONT_COMPRESSION
      { snfReadFont, snfReadFontInfo} ,
  #endif
  #endif
  #if XFONT_BDFFORMAT
      { bdfReadFont, bdfReadFontInfo} ,
      { bdfReadFont, bdfReadFontInfo} ,
  #ifdef X_GZIP_FONT_COMPRESSION
      { bdfReadFont, bdfReadFontInfo} ,
  #endif
  #endif
  #if XFONT_PCFFORMAT
      { pmfReadFont, pcfReadFontInfo} ,
  #endif
  };
  
  
  #define CAPABILITIES (CAP_MATRIX | CAP_CHARSUBSETTING)
  
  static FontRendererRec	renderers[] = {
  #if XFONT_PCFFORMAT
      { ".pcf", 4, BitmapOpenBitmap, BitmapOpenScalable,
  	BitmapGetInfoBitmap, BitmapGetInfoScalable, 0,
  	CAPABILITIES },
      { ".pcf.Z", 6, BitmapOpenBitmap, BitmapOpenScalable,
  	BitmapGetInfoBitmap, BitmapGetInfoScalable, 0,
  	CAPABILITIES },
  #ifdef X_GZIP_FONT_COMPRESSION
      { ".pcf.gz", 7,
      BitmapOpenBitmap, BitmapOpenScalable,
  	BitmapGetInfoBitmap, BitmapGetInfoScalable, 0,
  	CAPABILITIES },
  #endif
  #endif
  #if XFONT_SNFFORMAT
      { ".snf", 4, BitmapOpenBitmap, BitmapOpenScalable,
  	BitmapGetInfoBitmap, BitmapGetInfoScalable, 0,
  	CAPABILITIES },
      { ".snf.Z", 6, BitmapOpenBitmap, BitmapOpenScalable,
  	BitmapGetInfoBitmap, BitmapGetInfoScalable, 0,
  	CAPABILITIES },
  #ifdef X_GZIP_FONT_COMPRESSION
      { ".snf.gz", 7, BitmapOpenBitmap, BitmapOpenScalable,
  	BitmapGetInfoBitmap, BitmapGetInfoScalable, 0,
  	CAPABILITIES },
  #endif
  #endif
  #if XFONT_BDFFORMAT
      { ".bdf", 4, BitmapOpenBitmap, BitmapOpenScalable,
  	BitmapGetInfoBitmap, BitmapGetInfoScalable, 0,
  	CAPABILITIES },
      { ".bdf.Z", 6, BitmapOpenBitmap, BitmapOpenScalable,
  	BitmapGetInfoBitmap, BitmapGetInfoScalable, 0,
  	CAPABILITIES },
  #ifdef X_GZIP_FONT_COMPRESSION
      { ".bdf.gz", 7, BitmapOpenBitmap, BitmapOpenScalable,
  	BitmapGetInfoBitmap, BitmapGetInfoScalable, 0,
  	CAPABILITIES },
  #endif
  #endif
  #if XFONT_PCFFORMAT
      { ".pmf", 4, BitmapOpenBitmap, BitmapOpenScalable,
  	BitmapGetInfoBitmap, BitmapGetInfoScalable, 0,
  	CAPABILITIES }
  #endif
  };
  
  int
  BitmapOpenBitmap (FontPathElementPtr fpe, FontPtr *ppFont, int flags, 
  		  FontEntryPtr entry, char *fileName, 
  		  fsBitmapFormat format, fsBitmapFormatMask fmask,
  		  FontPtr non_cachable_font) /* We don't do licensing */
  {
      FontFilePtr	file;
      FontPtr     pFont;
      int         i;
      int         ret;
      int         bit,
                  byte,
                  glyph,
                  scan,
  		image;
  
      i = BitmapGetRenderIndex(entry->u.bitmap.renderer);
      file = FontFileOpen (fileName);
      if (!file)
  	return BadFontName;
      if (!(pFont = CreateFontRec())) {
  	fprintf(stderr, "Error: Couldn't allocate pFont (%ld)\n",
  		(unsigned long)sizeof(FontRec));
  	FontFileClose (file);
  	return AllocError;
      }
      /* set up default values */
      FontDefaultFormat(&bit, &byte, &glyph, &scan);
      /* get any changes made from above */
      ret = CheckFSFormat(format, fmask, &bit, &byte, &scan, &glyph, &image);
  
      /* Fill in font record. Data format filled in by reader. */
      pFont->refcnt = 0;
  
      ret = (*readers[i].ReadFont) (pFont, file, bit, byte, glyph, scan);
  
      FontFileClose (file);
      if (ret != Successful) {
  	xfree(pFont);
      } else {
  	*ppFont = pFont;
      }
      return ret;
  }
  
  int
  BitmapGetInfoBitmap (FontPathElementPtr fpe, FontInfoPtr pFontInfo, 
  		     FontEntryPtr entry, char *fileName)
  {
      FontFilePtr file;
      int		i;
      int		ret;
      FontRendererPtr renderer;
  
      renderer = FontFileMatchRenderer (fileName);
      if (!renderer)
  	return BadFontName;
      i = BitmapGetRenderIndex(renderer);
      file = FontFileOpen (fileName);
      if (!file)
  	return BadFontName;
      ret = (*readers[i].ReadInfo) (pFontInfo, file);
      FontFileClose (file);
      return ret;
  }
  
  #define numRenderers	(sizeof renderers / sizeof renderers[0])
  
  void
  BitmapRegisterFontFileFunctions (void)
  {
      int	    i;
  
      for (i = 0; i < numRenderers; i++)
  	FontFileRegisterRenderer (&renderers[i]);
  }
  
  /*
   * compute offset into renderers array - used to find the font reader,
   * the font info reader, and the bitmap scaling routine.  All users
   * of this routine must be kept in step with the renderer array.
   */
  int
  BitmapGetRenderIndex(FontRendererPtr renderer)
  {
      return renderer - renderers;
  }