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    1 /* $XTermId: fontutils.h,v 1.142 2022/10/23 14:47:45 tom Exp $ */
    2 
    3 /*
    4  * Copyright 1998-2021,2022 by Thomas E. Dickey
    5  *
    6  *                         All Rights Reserved
    7  *
    8  * Permission is hereby granted, free of charge, to any person obtaining a
    9  * copy of this software and associated documentation files (the
   10  * "Software"), to deal in the Software without restriction, including
   11  * without limitation the rights to use, copy, modify, merge, publish,
   12  * distribute, sublicense, and/or sell copies of the Software, and to
   13  * permit persons to whom the Software is furnished to do so, subject to
   14  * the following conditions:
   15  *
   16  * The above copyright notice and this permission notice shall be included
   17  * in all copies or substantial portions of the Software.
   18  *
   19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
   20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   21  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
   22  * IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY
   23  * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
   24  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
   25  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
   26  *
   27  * Except as contained in this notice, the name(s) of the above copyright
   28  * holders shall not be used in advertising or otherwise to promote the
   29  * sale, use or other dealings in this Software without prior written
   30  * authorization.
   31  */
   32 
   33 #ifndef included_fontutils_h
   34 #define included_fontutils_h 1
   35 
   36 #include <xterm.h>
   37 /* *INDENT-OFF* */
   38 
   39 extern Bool xtermLoadDefaultFonts (XtermWidget /* xw */);
   40 extern Bool xtermOpenFont (XtermWidget /* xw */, const char */* name */, XTermFonts * /* result */, XTermFonts * /* current */, Bool /* force */);
   41 extern XFontStruct * xtermLoadQueryFont(XtermWidget /* xw */, const char * /*name */);
   42 extern XTermFonts * getDoubleFont (TScreen * /* screen */, int /* which */);
   43 extern XTermFonts * getItalicFont (TScreen * /* screen */, int /* which */);
   44 extern XTermFonts * getNormalFont (TScreen * /* screen */, int /* which */);
   45 extern const VTFontNames * defaultVTFontNames(XtermWidget /* xw */);
   46 extern const VTFontNames * xtermFontName (const char */* normal */);
   47 extern const char * whichFontEnum (VTFontEnum /* value */);
   48 extern const char * whichFontList (XtermWidget /* xw */, VTFontList * /* value */);
   49 extern const char * whichFontList2(XtermWidget /* xw */, char ** /* value */);
   50 extern int lookupRelativeFontSize (XtermWidget /* xw */, int /* old */, int /* relative */);
   51 extern int xtermGetFont (const char * /* param */);
   52 extern int xtermLoadFont (XtermWidget /* xw */, const VTFontNames */* fonts */, Bool /* doresize */, int /* fontnum */);
   53 extern void HandleSetFont PROTO_XT_ACTIONS_ARGS;
   54 extern Bool SetVTFont (XtermWidget /* xw */, int /* i */, Bool /* doresize */, const VTFontNames */* fonts */);
   55 extern void allocFontList (XtermWidget /* xw */, const char * /* name */, XtermFontNames * /* target */, VTFontEnum /* which */, const char * /* source */, Bool /* ttf */);
   56 extern void copyFontList (char *** /* targetp */, char ** /* source */);
   57 extern void initFontLists (XtermWidget /* xw */);
   58 extern void freeFontList (char *** /* targetp */);
   59 extern void freeFontLists (VTFontList * /* lists */);
   60 extern void xtermCloseFont (XtermWidget /* xw */, XTermFonts * /* fnt */);
   61 extern void xtermCloseFonts (XtermWidget /* xw */, XTermFonts * /* fnts[fMAX] */);
   62 extern void xtermComputeFontInfo (XtermWidget /* xw */, VTwin */* win */, XFontStruct */* font */, int /* sbwidth */);
   63 extern void xtermCopyFontInfo (XTermFonts * /* target */, XTermFonts * /* source */);
   64 extern void xtermDerivedFont (const char * /* name */);
   65 extern void xtermFreeFontInfo (XTermFonts * /* target */);
   66 extern void xtermSetCursorBox (TScreen * /* screen */);
   67 extern void xtermUpdateFontGCs (XtermWidget /* xw */, MyGetFont /* myfunc */);
   68 extern void xtermUpdateFontInfo (XtermWidget /* xw */, Bool /* doresize */);
   69 
   70 #define getIconicFont(screen) (&((screen)->fnt_icon))
   71 
   72 /* use these when "which" is constant, or known in-limits */
   73 #define GetNormalFont(screen, which) (&((screen)->fnts[which]))
   74 #define GetDoubleFont(screen, which) (&((screen)->double_fonts[which]))
   75 #if OPT_WIDE_ATTRS
   76 #define GetItalicFont(screen, which) (&((screen)->ifnts[which]))
   77 #else
   78 #define GetItalicFont(screen, which) 0
   79 #endif
   80 
   81 #define FirstItemOf(vector) ((vector) ? (vector)[0] : 0)
   82 #define CurrentXftFont(xw)  ((xw)->work.fonts.xft.list_n[0])
   83 #define DefaultFontN(xw)    ((xw)->work.fonts.x11.list_n[0])
   84 #define DefaultFontB(xw)    ((xw)->work.fonts.x11.list_b[0])
   85 #define DefaultFontW(xw)    ((xw)->work.fonts.x11.list_w[0])
   86 #define DefaultFontWB(xw)   ((xw)->work.fonts.x11.list_wb[0])
   87 
   88 #if OPT_DEC_CHRSET
   89 extern char *xtermSpecialFont (XTermDraw * /* params */);
   90 #endif
   91 
   92 #define FontLacksMetrics(font) \
   93     ((font)->fs != 0 \
   94      && ((font)->fs->per_char == 0))
   95 
   96 #define FontIsIncomplete(font) \
   97     ((font)->fs != 0 \
   98      && (font)->fs->per_char != 0 \
   99      && !(font)->fs->all_chars_exist)
  100 
  101 #if OPT_BOX_CHARS
  102 
  103 #define ForceBoxChars(screen,ch) \
  104     (xtermIsDecGraphic(ch) \
  105      && (screen)->force_box_chars)
  106 
  107      /*
  108       * Keep track of (some) characters to make the check for missing
  109       * characters faster.  If the character is known to be missing,
  110       * the cache value is '2'.  If we have checked the character, the
  111       * cached value is '1'.
  112       */
  113 #if OPT_WIDE_CHARS
  114 #define CheckedKnownMissing(font, ch) \
  115      (((ch) < MaxUChar) && ((font)->known_missing[(Char)(ch)] > 0))
  116 #else
  117 #define CheckedKnownMissing(font, ch) \
  118      ((font)->known_missing[(Char)(ch)] > 0)
  119 #endif
  120 
  121 #define IsXtermMissingChar(screen, ch, font) \
  122      (CheckedKnownMissing(font, ch) \
  123       ? ((font)->known_missing[(Char)(ch)] > 1) \
  124       : ((FontIsIncomplete(font) && xtermMissingChar(ch, font)) \
  125        || ForceBoxChars(screen, ch)))
  126 
  127 extern void xtermDrawBoxChar (XTermDraw * /* params */, unsigned /* ch */, GC /* gc */, int /* x */, int /* y */, int /* cols */, Bool /* xftords */);
  128 #else
  129 #define IsXtermMissingChar(screen, ch, font) False
  130 #endif
  131 
  132 #if OPT_BOX_CHARS || OPT_REPORT_FONTS
  133 extern Bool xtermMissingChar (unsigned /* ch */, XTermFonts */* font */);
  134 #endif
  135 
  136 #if OPT_LOAD_VTFONTS
  137 extern void HandleLoadVTFonts PROTO_XT_ACTIONS_ARGS;
  138 #endif
  139 
  140 #if OPT_LOAD_VTFONTS || OPT_WIDE_CHARS
  141 extern Bool xtermLoadWideFonts (XtermWidget /* w */, Bool /* nullOk */);
  142 extern void xtermSaveVTFonts (XtermWidget /* xw */);
  143 #endif
  144 
  145 #define xtermIsDecGraphic(ch)   ((ch) > 0 && (ch) < 32)
  146 
  147 #if OPT_RENDERFONT
  148 extern Boolean maybeXftCache(XtermWidget /* xw */, XftFont * /* font */);
  149 extern Bool xtermXftMissing (XtermWidget /* xw */, XTermXftFonts * /* fontData */, int /* fontNum */, XftFont * /* font */, unsigned /* wc */);
  150 extern XTermXftFonts *getMyXftFont (XtermWidget /* xw */, int /* which */, int /* fontnum */);
  151 extern const char * whichXftFonts(XtermWidget /* xw */, XTermXftFonts * /* data */);
  152 extern int findXftGlyph (XtermWidget /* xw */, XTermXftFonts * /* fontData */, unsigned /* wc */);
  153 extern XftFont *getXftFont (XtermWidget /* xw */, VTFontEnum /* which */, int /* fontnum */);
  154 extern void closeCachedXft (TScreen * /* screen */, XftFont * /* font */);
  155 extern void xtermCloseXft (TScreen * /* screen */, XTermXftFonts * /* pub */);
  156 #if OPT_DEC_CHRSET
  157 extern void getDoubleXftFont(XTermDraw * /* params */, XTermXftFonts * /* fontData */, unsigned /* chrset */, unsigned /* attr_flags */);
  158 #endif
  159 #endif
  160 
  161 #if OPT_SHIFT_FONTS
  162 extern String getFaceName (XtermWidget /* xw */, Bool /* wideName */);
  163 extern void HandleLargerFont PROTO_XT_ACTIONS_ARGS;
  164 extern void HandleSmallerFont PROTO_XT_ACTIONS_ARGS;
  165 extern void setFaceName (XtermWidget /* xw */, const char * /*value */);
  166 #endif
  167 
  168 #if OPT_WIDE_ATTRS
  169 extern unsigned xtermUpdateItalics (XtermWidget /* xw */, unsigned /* new_attrs */, unsigned /* old_attrs */);
  170 extern void xtermLoadItalics (XtermWidget /* xw */);
  171 #endif
  172 
  173 #if OPT_WIDE_CHARS
  174 extern unsigned ucs2dec (TScreen * /* screen */, unsigned /* ch */);
  175 extern unsigned dec2ucs (TScreen * /* screen */, unsigned /* ch */);
  176 #endif
  177 
  178 /* *INDENT-ON* */
  179 
  180 #endif /* included_fontutils_h */