diff options
Diffstat (limited to 'nx-X11/lib/Xft1/xftcore.c')
| -rw-r--r-- | nx-X11/lib/Xft1/xftcore.c | 247 |
1 files changed, 247 insertions, 0 deletions
diff --git a/nx-X11/lib/Xft1/xftcore.c b/nx-X11/lib/Xft1/xftcore.c new file mode 100644 index 000000000..331cbd7e3 --- /dev/null +++ b/nx-X11/lib/Xft1/xftcore.c @@ -0,0 +1,247 @@ +/* + * $XFree86: xc/lib/Xft/xftcore.c,v 1.5 2000/12/20 00:28:44 keithp Exp $ + * + * Copyright © 2000 Keith Packard, member of The XFree86 Project, Inc. + * + * 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, and that the name of Keith Packard not be used in + * advertising or publicity pertaining to distribution of the software without + * specific, written prior permission. Keith Packard makes no + * representations about the suitability of this software for any purpose. It + * is provided "as is" without express or implied warranty. + * + * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO + * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, + * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER + * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR + * PERFORMANCE OF THIS SOFTWARE. + */ + +#include <stdlib.h> +#include "xftint.h" + +XChar2b * +XftCoreConvert16 (XftChar16 *string, + int len, + XChar2b xcloc[XFT_CORE_N16LOCAL]) +{ + XChar2b *xc; + int i; + + if (len < XFT_CORE_N16LOCAL) + xc = xcloc; + else + xc = (XChar2b *) malloc (len * sizeof (XChar2b)); + for (i = 0; i < len; i++) + { + xc[i].byte1 = string[i] & 0xff; + xc[i].byte2 = (string[i] >> 8) & 0xff; + } + return xc; +} + +XChar2b * +XftCoreConvert32 (XftChar32 *string, + int len, + XChar2b xcloc[XFT_CORE_N16LOCAL]) +{ + XChar2b *xc; + int i; + + if (len < XFT_CORE_N16LOCAL) + xc = xcloc; + else + xc = (XChar2b *) malloc (len * sizeof (XChar2b)); + for (i = 0; i < len; i++) + { + xc[i].byte1 = string[i] & 0xff; + xc[i].byte2 = (string[i] >> 8) & 0xff; + } + return xc; +} + +XChar2b * +XftCoreConvertUtf8 (XftChar8 *string, + int len, + XChar2b xcloc[XFT_CORE_N16LOCAL], + int *nchar) +{ + XChar2b *xc; + XftChar32 c; + int i; + int n, width; + int clen; + + if (!XftUtf8Len (string, len, &n, &width)) + return 0; + + if (n < XFT_CORE_N16LOCAL) + xc = xcloc; + else + xc = (XChar2b *) malloc (n * sizeof (XChar2b)); + for (i = 0; i < n; i++) + { + clen = XftUtf8ToUcs4 (string, &c, len); + xc[i].byte1 = c & 0xff; + xc[i].byte2 = (c >> 8) & 0xff; + string += clen; + len -= clen; + } + *nchar = n; + return xc; +} + +void +XftCoreExtents8 (Display *dpy, + XFontStruct *fs, + XftChar8 *string, + int len, + XGlyphInfo *extents) +{ + int direction; + int ascent, descent; + XCharStruct overall; + + XTextExtents (fs, (char *) string, len, &direction, + &ascent, &descent, &overall); + if (overall.lbearing < overall.rbearing) + { + extents->x = overall.lbearing; + extents->width = overall.rbearing - overall.lbearing; + } + else + { + extents->x = overall.rbearing; + extents->width = overall.lbearing - overall.rbearing; + } + extents->y = -overall.ascent; + extents->height = overall.ascent + overall.descent; + extents->xOff = overall.width; + extents->yOff = 0; +} + +void +XftCoreExtents16 (Display *dpy, + XFontStruct *fs, + XftChar16 *string, + int len, + XGlyphInfo *extents) +{ + int direction; + int ascent, descent; + XCharStruct overall; + XChar2b *xc, xcloc[XFT_CORE_N16LOCAL]; + + xc = XftCoreConvert16 (string, len, xcloc); + XTextExtents16 (fs, xc, len, &direction, + &ascent, &descent, &overall); + if (xc != xcloc) + free (xc); + if (overall.lbearing < overall.rbearing) + { + extents->x = overall.lbearing; + extents->width = overall.rbearing - overall.lbearing; + } + else + { + extents->x = overall.rbearing; + extents->width = overall.lbearing - overall.rbearing; + } + extents->y = -overall.ascent; + extents->height = overall.ascent + overall.descent; + extents->xOff = overall.width; + extents->yOff = 0; +} + +void +XftCoreExtents32 (Display *dpy, + XFontStruct *fs, + XftChar32 *string, + int len, + XGlyphInfo *extents) +{ + int direction; + int ascent, descent; + XCharStruct overall; + XChar2b *xc, xcloc[XFT_CORE_N16LOCAL]; + + xc = XftCoreConvert32 (string, len, xcloc); + XTextExtents16 (fs, xc, len, &direction, + &ascent, &descent, &overall); + if (xc != xcloc) + free (xc); + if (overall.lbearing < overall.rbearing) + { + extents->x = overall.lbearing; + extents->width = overall.rbearing - overall.lbearing; + } + else + { + extents->x = overall.rbearing; + extents->width = overall.lbearing - overall.rbearing; + } + extents->y = -overall.ascent; + extents->height = overall.ascent + overall.descent; + extents->xOff = overall.width; + extents->yOff = 0; +} + +void +XftCoreExtentsUtf8 (Display *dpy, + XFontStruct *fs, + XftChar8 *string, + int len, + XGlyphInfo *extents) +{ + int direction; + int ascent, descent; + XCharStruct overall; + XChar2b *xc, xcloc[XFT_CORE_N16LOCAL]; + int n; + + xc = XftCoreConvertUtf8 (string, len, xcloc, &n); + XTextExtents16 (fs, xc, n, &direction, + &ascent, &descent, &overall); + if (xc != xcloc) + free (xc); + if (overall.lbearing < overall.rbearing) + { + extents->x = overall.lbearing; + extents->width = overall.rbearing - overall.lbearing; + } + else + { + extents->x = overall.rbearing; + extents->width = overall.lbearing - overall.rbearing; + } + extents->y = -overall.ascent; + extents->height = overall.ascent + overall.descent; + extents->xOff = overall.width; + extents->yOff = 0; +} + +Bool +XftCoreGlyphExists (Display *dpy, + XFontStruct *fs, + XftChar32 glyph) +{ + int direction; + int ascent, descent; + XCharStruct overall; + XChar2b xc; + + XftCoreConvert32 (&glyph, 1, &xc); + XTextExtents16 (fs, &xc, 1, &direction, + &ascent, &descent, &overall); + return (overall.lbearing != 0 || + overall.rbearing != 0 || + overall.width != 0 || + overall.ascent != 0 || + overall.descent != 0); +} + |