diff options
Diffstat (limited to 'libXft/src/xftxlfd.c')
| -rw-r--r-- | libXft/src/xftxlfd.c | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/libXft/src/xftxlfd.c b/libXft/src/xftxlfd.c new file mode 100644 index 000000000..7c1991163 --- /dev/null +++ b/libXft/src/xftxlfd.c @@ -0,0 +1,177 @@ +/* + * Copyright © 2000 Keith Packard + * + * 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 "xftint.h" + +static XftSymbolic XftXlfdWeights[] = { + { "light", FC_WEIGHT_LIGHT }, + { "medium", FC_WEIGHT_MEDIUM }, + { "regular", FC_WEIGHT_MEDIUM }, + { "demibold", FC_WEIGHT_DEMIBOLD }, + { "bold", FC_WEIGHT_BOLD }, + { "black", FC_WEIGHT_BLACK }, +}; + +#define NUM_XLFD_WEIGHTS (sizeof XftXlfdWeights/sizeof XftXlfdWeights[0]) + +static XftSymbolic XftXlfdSlants[] = { + { "r", FC_SLANT_ROMAN }, + { "i", FC_SLANT_ITALIC }, + { "o", FC_SLANT_OBLIQUE }, +}; + +#define NUM_XLFD_SLANTS (sizeof XftXlfdSlants/sizeof XftXlfdSlants[0]) + +/* + * Cut out one XLFD field, placing it in 'save' and return + * the start of 'save' + */ +static char * +XftSplitStr (const char *field, char *save) +{ + char *s = save; + char c; + + while (*field) + { + if (*field == '-') + break; + c = *field++; + *save++ = c; + } + *save = 0; + return s; +} + +/* + * convert one XLFD numeric field. Return -1 if the field is '*' + */ + +static const char * +XftGetInt(const char *ptr, int *val) +{ + if (*ptr == '*') { + *val = -1; + ptr++; + } else + for (*val = 0; *ptr >= '0' && *ptr <= '9';) + *val = *val * 10 + *ptr++ - '0'; + if (*ptr == '-') + return ptr; + return (char *) 0; +} + +_X_EXPORT FcPattern * +XftXlfdParse (const char *xlfd_orig, FcBool ignore_scalable, FcBool complete) +{ + FcPattern *pat; + const char *xlfd = xlfd_orig; + const char *foundry; + const char *family; + const char *weight_name; + const char *slant; + const char *registry; + const char *encoding; + char *save; + int pixel; + int point; + int resx; + int resy; + int slant_value, weight_value; + double dpixel; + + if (*xlfd != '-') + return NULL; + if (!(xlfd = strchr (foundry = ++xlfd, '-'))) return NULL; + if (!(xlfd = strchr (family = ++xlfd, '-'))) return NULL; + if (!(xlfd = strchr (weight_name = ++xlfd, '-'))) return NULL; + if (!(xlfd = strchr (slant = ++xlfd, '-'))) return NULL; + if (!(xlfd = strchr (/* setwidth_name = */ ++xlfd, '-'))) return NULL; + if (!(xlfd = strchr (/* add_style_name = */ ++xlfd, '-'))) return NULL; + if (!(xlfd = XftGetInt (++xlfd, &pixel))) return NULL; + if (!(xlfd = XftGetInt (++xlfd, &point))) return NULL; + if (!(xlfd = XftGetInt (++xlfd, &resx))) return NULL; + if (!(xlfd = XftGetInt (++xlfd, &resy))) return NULL; + if (!(xlfd = strchr (/* spacing = */ ++xlfd, '-'))) return NULL; + if (!(xlfd = strchr (/* average_width = */ ++xlfd, '-'))) return NULL; + if (!(xlfd = strchr (registry = ++xlfd, '-'))) return NULL; + /* make sure no fields follow this one */ + if ((xlfd = strchr (encoding = ++xlfd, '-'))) return NULL; + + if (!pixel) + return NULL; + + pat = FcPatternCreate (); + if (!pat) + return NULL; + + save = (char *) malloc (strlen (foundry) + 1); + + if (!save) { + FcPatternDestroy (pat); + return NULL; + } + + if (!FcPatternAddString (pat, XFT_XLFD, (FcChar8 *) xlfd_orig)) goto bail; + + XftSplitStr (foundry, save); + if (save[0] && strcmp (save, "*") != 0) + if (!FcPatternAddString (pat, FC_FOUNDRY, (FcChar8 *) save)) goto bail; + + XftSplitStr (family, save); + if (save[0] && strcmp (save, "*") != 0) + if (!FcPatternAddString (pat, FC_FAMILY, (FcChar8 *) save)) goto bail; + + weight_value = _XftMatchSymbolic (XftXlfdWeights, NUM_XLFD_WEIGHTS, + XftSplitStr (weight_name, save), + FC_WEIGHT_MEDIUM); + if (!FcPatternAddInteger (pat, FC_WEIGHT, weight_value)) + goto bail; + + slant_value = _XftMatchSymbolic (XftXlfdSlants, NUM_XLFD_SLANTS, + XftSplitStr (slant, save), + FC_SLANT_ROMAN); + if (!FcPatternAddInteger (pat, FC_SLANT, slant_value)) + goto bail; + + dpixel = (double) pixel; + + if (point > 0) + { + if (!FcPatternAddDouble (pat, FC_SIZE, ((double) point) / 10.0)) goto bail; + if (pixel <= 0 && resy > 0) + { + dpixel = (double) point * (double) resy / 720.0; + } + } + + if (dpixel > 0) + if (!FcPatternAddDouble (pat, FC_PIXEL_SIZE, dpixel)) goto bail; + + free (save); + return pat; + +bail: + free (save); + FcPatternDestroy (pat); + return NULL; +} |