src/x11drawutfstr.c

   1 #define XUDISBUF_SIZE  (1024u)
   2 static XChar2b xDrawUtf8ImageStringBuf[XUDISBUF_SIZE];
   3
   4 static void xDrawUtf8ImageString (int x, int y, int fontset, Drawable dwb, const char *str, int bytelen) {
   5   if (bytelen < 0) {
   6     if (!str) return;
   7     bytelen = (int)strlen(str);
   8   }
   9   if (!bytelen) return;
  10
  11   //y += dc.font[fontset].ascent;
  12
  13 #ifdef X11_USE_FUCKED_FONTSETS
  14   XFontSet xfontset = dc.font[fontset].set;
  15   Xutf8DrawImageString(xw.dpy, xw.pictab, xfontset, dc.gc, x, y, str, bytelen);
  16 #else
  17   uint32_t utfcp = 0;
  18   uint32_t bpos = 0;
  19   XChar2b *c2bptr = xDrawUtf8ImageStringBuf;
  20   while (bytelen--) {
  21     utfcp = sxed_utf8d_consume(utfcp, *str++);
  22     if (sxed_utf8_valid_cp(utfcp)) {
  23       if (!sxed_utf8_printable_cp(utfcp)) utfcp = SXED_UTF8_REPLACEMENT_CP;
  24       c2bptr->byte1 = (uint8_t)(utfcp>>8);
  25       c2bptr->byte2 = (uint8_t)utfcp;
  26       ++c2bptr;
  27       if (++bpos == XUDISBUF_SIZE) {
  28         c2bptr = xDrawUtf8ImageStringBuf;
  29         if (dc.gcfid != dc.font[fontset].fid) {
  30           XSetFont(xw.dpy, dc.gc, dc.font[fontset].fid);
  31           dc.gcfid = dc.font[fontset].fid;
  32         }
  33         XDrawImageString16(xw.dpy, dwb, dc.gc, x, y, c2bptr, bpos);
  34         x += (int)bpos*dc.font[fontset].width;
  35         bpos = 0;
  36       }
  37     }
  38   }
  39   if (bpos) {
  40     c2bptr = xDrawUtf8ImageStringBuf;
  41     if (dc.gcfid != dc.font[fontset].fid) {
  42       XSetFont(xw.dpy, dc.gc, dc.font[fontset].fid);
  43       dc.gcfid = dc.font[fontset].fid;
  44     }
  45     XDrawImageString16(xw.dpy, dwb, dc.gc, x, y, c2bptr, bpos);
  46   }
  47 #endif
  48 }
  49
  50
  51 static int xUtf8StringWidth (int fontset, const char *str, int bytelen) {
  52   if (bytelen < 0) {
  53     if (!str) return 0;
  54     bytelen = (int)strlen(str);
  55   }
  56   if (!bytelen) return 0;
  57
  58 #ifdef X11_USE_FUCKED_FONTSETS
  59   XFontSet xfontset = dc.font[fontset].set;
  60   XRectangle r;
  61   memset(&r, 0, sizeof(r));
  62   Xutf8TextExtents(xfontset, str, bytelen, &r, NULL);
  63   return r.width-r.x;
  64 #else
  65   int wdt = 0;
  66   uint32_t utfcp = 0;
  67   uint32_t bpos = 0;
  68   XChar2b *c2bptr = xDrawUtf8ImageStringBuf;
  69   while (bytelen--) {
  70     utfcp = sxed_utf8d_consume(utfcp, *str++);
  71     if (sxed_utf8_valid_cp(utfcp)) {
  72       if (!sxed_utf8_printable_cp(utfcp)) utfcp = SXED_UTF8_REPLACEMENT_CP;
  73       c2bptr->byte1 = (uint8_t)(utfcp>>8);
  74       c2bptr->byte2 = (uint8_t)utfcp;
  75       ++c2bptr;
  76       if (++bpos == XUDISBUF_SIZE) {
  77         c2bptr = xDrawUtf8ImageStringBuf;
  78         wdt += XTextWidth16(dc.font[fontset].set, c2bptr, bpos);
  79         bpos = 0;
  80       }
  81     }
  82   }
  83   if (bpos) {
  84     c2bptr = xDrawUtf8ImageStringBuf;
  85     wdt += XTextWidth16(dc.font[fontset].set, c2bptr, bpos);
  86   }
  87   return wdt;
  88 #endif
  89 }