diff options
Diffstat (limited to 'nx-X11/lib/X11/Text.c')
| -rw-r--r-- | nx-X11/lib/X11/Text.c | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/nx-X11/lib/X11/Text.c b/nx-X11/lib/X11/Text.c new file mode 100644 index 000000000..95ad0d9df --- /dev/null +++ b/nx-X11/lib/X11/Text.c @@ -0,0 +1,141 @@ +/* $Xorg: Text.c,v 1.4 2001/02/09 02:03:37 xorgcvs Exp $ */ +/* + +Copyright 1986, 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/X11/Text.c,v 1.4 2001/12/14 19:54:07 dawes Exp $ */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif +#include "Xlibint.h" + +int +XDrawString( + register Display *dpy, + Drawable d, + GC gc, + int x, + int y, + _Xconst char *string, + int length) +{ + int Datalength = 0; + register xPolyText8Req *req; + + if (length <= 0) + return 0; + + LockDisplay(dpy); + FlushGC(dpy, gc); + GetReq (PolyText8, req); + req->drawable = d; + req->gc = gc->gid; + req->x = x; + req->y = y; + + + Datalength += SIZEOF(xTextElt) * ((length + 253) / 254) + length; + + + req->length += (Datalength + 3)>>2; /* convert to number of 32-bit words */ + + + /* + * If the entire request does not fit into the remaining space in the + * buffer, flush the buffer first. If the request does fit into the + * empty buffer, then we won't have to flush it at the end to keep + * the buffer 32-bit aligned. + */ + + if (dpy->bufptr + Datalength > dpy->bufmax) + _XFlush (dpy); + + { + int nbytes; + int PartialNChars = length; + /* register xTextElt *elt; */ + char *CharacterOffset = (char *)string; + unsigned char *tbuf; + + while(PartialNChars > 254) + { + nbytes = 254 + SIZEOF(xTextElt); + BufAlloc (unsigned char *, tbuf, nbytes); +/* elt->delta = 0; + * elt->len = 254; + */ + *(unsigned char *)tbuf = 254; + *(tbuf+1) = 0; +/* memcpy ((char *) (elt + 1), CharacterOffset, 254); + */ + memcpy ((char *)tbuf+2, CharacterOffset, 254); + PartialNChars = PartialNChars - 254; + CharacterOffset += 254; + } + + if (PartialNChars) + { + nbytes = PartialNChars + SIZEOF(xTextElt); + BufAlloc (unsigned char *, tbuf, nbytes); +/* elt->delta = 0; + * elt->len = PartialNChars; + */ + *(unsigned char *)tbuf = PartialNChars; + *(tbuf+1) = 0; +/* memcpy ((char *) (elt + 1), CharacterOffset, PartialNChars); + */ + memcpy ((char *)tbuf+2, CharacterOffset, PartialNChars); + } + } + + /* Pad request out to a 32-bit boundary */ + + if (Datalength &= 3) { + char *pad; + /* + * BufAlloc is a macro that uses its last argument more than + * once, otherwise I'd write "BufAlloc (char *, pad, 4-length)" + */ + length = 4 - Datalength; + BufAlloc (char *, pad, length); + /* + * if there are 3 bytes of padding, the first byte MUST be 0 + * so the pad bytes aren't mistaken for a final xTextElt + */ + *pad = 0; + } + + /* + * If the buffer pointer is not now pointing to a 32-bit boundary, + * we must flush the buffer so that it does point to a 32-bit boundary + * at the end of this routine. + */ + + if ((dpy->bufptr - dpy->buffer) & 3) + _XFlush (dpy); + UnlockDisplay(dpy); + SyncHandle(); + return 0; +} |