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Diffstat (limited to 'libXfont/src/Speedo/spinfo.c')
| -rw-r--r-- | libXfont/src/Speedo/spinfo.c | 462 |
1 files changed, 462 insertions, 0 deletions
diff --git a/libXfont/src/Speedo/spinfo.c b/libXfont/src/Speedo/spinfo.c new file mode 100644 index 000000000..d7a1edd98 --- /dev/null +++ b/libXfont/src/Speedo/spinfo.c @@ -0,0 +1,462 @@ +/* $Xorg: spinfo.c,v 1.4 2001/02/09 02:04:00 xorgcvs Exp $ */ +/* + * Copyright 1990, 1991 Network Computing Devices; + * Portions Copyright 1987 by Digital Equipment Corporation + * + * 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 names of Network Computing Devices or Digital + * not be used in advertising or publicity pertaining to distribution of + * the software without specific, written prior permission. + * + * NETWORK COMPUTING DEVICES AND DIGITAL DISCLAIM ALL WARRANTIES WITH + * REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS, IN NO EVENT SHALL NETWORK COMPUTING DEVICES OR DIGITAL 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. + * + * Author: Dave Lemke, Network Computing Devices, Inc + */ + +/* + +Copyright 1987, 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/font/Speedo/spinfo.c,v 1.12 2001/12/14 19:56:42 dawes Exp $ */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif +#include <X11/fonts/fntfilst.h> +#include <X11/fonts/fontutil.h> +#include "spint.h" +#ifndef FONTMODULE +#include <math.h> +#else +#include "xf86_ansic.h" +#endif + +/* percentage of pointsize used to specify ascent & descent */ +#define STRETCH_FACTOR 120 + +enum scaleType { + atom, truncate_atom, pixel_size, point_size, resolution_x, + resolution_y, average_width +}; + +typedef struct _fontProp { + char *name; + long atom; + enum scaleType type; +} fontProp; + +static fontProp fontNamePropTable[] = { + { "FOUNDRY", 0, atom }, + { "FAMILY_NAME", 0, atom }, + { "WEIGHT_NAME", 0, atom }, + { "SLANT", 0, atom }, + { "SETWIDTH_NAME", 0, atom }, + { "ADD_STYLE_NAME", 0, atom }, + { "PIXEL_SIZE", 0, pixel_size }, + { "POINT_SIZE", 0, point_size }, + { "RESOLUTION_X", 0, resolution_x }, + { "RESOLUTION_Y", 0, resolution_y }, + { "SPACING", 0, atom }, + { "AVERAGE_WIDTH", 0, average_width }, + { "CHARSET_REGISTRY", 0, atom }, + { "CHARSET_ENCODING", 0, truncate_atom } +}; + +/* Warning: following array is closely related to the sequence of + defines after it. */ + +static fontProp extraProps[] = { + { "FONT", 0, }, + { "COPYRIGHT", 0, }, + { "RAW_PIXEL_SIZE", 0, }, + { "RAW_POINT_SIZE", 0, }, + { "RAW_ASCENT", 0, }, + { "RAW_DESCENT", 0, }, + { "RAW_AVERAGE_WIDTH", 0, }, + { "FONT_TYPE", 0, }, + { "RASTERIZER_NAME", 0, } +}; + +/* this is a bit kludgy */ +#define FONTPROP 0 +#define COPYRIGHTPROP 1 +#define RAWPIXELPROP 2 +#define RAWPOINTPROP 3 +#define RAWASCENTPROP 4 +#define RAWDESCENTPROP 5 +#define RAWWIDTHPROP 6 +#define FONT_TYPEPROP 7 +#define RASTERIZER_NAMEPROP 8 + +#define NNAMEPROPS (sizeof(fontNamePropTable) / sizeof(fontProp)) +#define NEXTRAPROPS (sizeof(extraProps) / sizeof(fontProp)) + +#define NPROPS (NNAMEPROPS + NEXTRAPROPS) + +void +sp_make_standard_props() +{ + int i; + fontProp *t; + + i = sizeof(fontNamePropTable) / sizeof(fontProp); + for (t = fontNamePropTable; i; i--, t++) + t->atom = MakeAtom(t->name, (unsigned) strlen(t->name), TRUE); + i = sizeof(extraProps) / sizeof(fontProp); + for (t = extraProps; i; i--, t++) + t->atom = MakeAtom(t->name, (unsigned) strlen(t->name), TRUE); +} + +void +sp_make_header( + SpeedoFontPtr spf, + FontInfoPtr pinfo) +{ + int pixel_size; + SpeedoMasterFontPtr spmf = spf->master; + + pinfo->firstCol = spmf->first_char_id & 0xff; + pinfo->firstRow = spmf->first_char_id >> 8; + pinfo->lastCol = spmf->max_id & 0xff; + pinfo->lastRow = spmf->max_id >> 8; + + /* XXX -- hackery here */ + pinfo->defaultCh = 0; +/* computed by FontComputeInfoAccelerators: + * noOverlap + * constantMetrics + * terminalFont + * constantWidth + * inkInside + */ + pinfo->inkMetrics = 0; + pinfo->allExist = 0; + pinfo->drawDirection = LeftToRight; + pinfo->cachable = 1; + if (spf->specs.xxmult != spf->specs.yymult) + pinfo->anamorphic = TRUE; + else + pinfo->anamorphic = FALSE; +/* computed by sp_compute_bounds: + * maxOverlap + * maxbounds + * minbounds + * ink_maxbounds + * ink_minbounds + */ + pixel_size = spf->vals.pixel_matrix[3] * STRETCH_FACTOR / 100; + pinfo->fontAscent = pixel_size * 764 / 1000; /* 764 == EM_TOP */ + pinfo->fontDescent = pixel_size - pinfo->fontAscent; +} + +static void +adjust_min_max( + xCharInfo *minc, + xCharInfo *maxc, + xCharInfo *tmp) +{ +#define MINMAX(field,ci) \ + if (minc->field > (ci)->field) \ + minc->field = (ci)->field; \ + if (maxc->field < (ci)->field) \ + maxc->field = (ci)->field; + + MINMAX(ascent, tmp); + MINMAX(descent, tmp); + MINMAX(leftSideBearing, tmp); + MINMAX(rightSideBearing, tmp); + MINMAX(characterWidth, tmp); + + if ((INT16)minc->attributes > (INT16)tmp->attributes) + minc->attributes = tmp->attributes; + if ((INT16)maxc->attributes < (INT16)tmp->attributes) + maxc->attributes = tmp->attributes; + +#undef MINMAX +} + + +void +sp_compute_bounds( + SpeedoFontPtr spf, + FontInfoPtr pinfo, + unsigned long flags, + long *sWidth) +{ + int i, + id, + index, + maxOverlap, + overlap, + total_width = 0; + xCharInfo minchar, + maxchar, + tmpchar; + bbox_t bbox; + fix31 width; + double pix_width; + SpeedoMasterFontPtr spmf = spf->master; + int firstChar; + int num_chars = 0; + + firstChar = spmf->first_char_id; + minchar.ascent = minchar.descent = + minchar.leftSideBearing = minchar.rightSideBearing = + minchar.characterWidth = minchar.attributes = 32767; + maxchar.ascent = maxchar.descent = + maxchar.leftSideBearing = maxchar.rightSideBearing = + maxchar.characterWidth = maxchar.attributes = -32767; + maxOverlap = -32767; + *sWidth = 0; + for (i = 0; i < spmf->num_chars; i++) { + int j; + int char_id; + + index = spmf->enc[i * 2 + 1]; + char_id = spmf->enc[i * 2]; + /* + * See if this character is in the list of ranges specified in the + * XLFD name + */ + for (j = 0; j < spf->vals.nranges; j++) + if (char_id >= mincharno(spf->vals.ranges[j]) && + char_id <= maxcharno(spf->vals.ranges[j])) + break; + if (spf->vals.nranges && j == spf->vals.nranges) + continue; + num_chars++; + + if (!(flags & ComputeBoundsOnly)) { + + width = sp_get_char_width(index); + + /* convert to pixel coords */ + pix_width = (int)width * (spf->specs.xxmult / 65536L) + + ((int) width * (spf->specs.xxmult % 65536L)) + / 65536L; + pix_width /= 65536L; + + (void) sp_get_char_bbox(index, &bbox); + bbox.ymax = (bbox.ymax + 32768L) >> 16; + bbox.ymin = (bbox.ymin + 32768L) >> 16; + bbox.xmin = (bbox.xmin + 32768L) >> 16; + bbox.xmax = (bbox.xmax + 32768L) >> 16; + tmpchar.ascent = bbox.ymax; + tmpchar.descent = -bbox.ymin; + tmpchar.characterWidth = (int)(pix_width + /* round */ + (pix_width > 0 ? 0.5 : -0.5)); + tmpchar.rightSideBearing = bbox.xmax; + tmpchar.leftSideBearing = bbox.xmin; + + if (!tmpchar.characterWidth && + tmpchar.ascent == -tmpchar.descent && + tmpchar.rightSideBearing == tmpchar.leftSideBearing) + { + /* Character appears non-existent, probably as a result + of the transformation. Let's give it one pixel in + the universe so it's not mistaken for non-existent. */ + tmpchar.leftSideBearing = tmpchar.descent = 0; + tmpchar.rightSideBearing = tmpchar.ascent = 1; + } + + tmpchar.attributes = (int)((double)(int)width / 65.536 + .5); + } + else + tmpchar = spf->encoding[char_id - firstChar].metrics; + + adjust_min_max(&minchar, &maxchar, &tmpchar); + overlap = tmpchar.rightSideBearing - tmpchar.characterWidth; + if (maxOverlap < overlap) + maxOverlap = overlap; + + total_width += ((int)(INT16)tmpchar.attributes); + *sWidth += abs((int)(INT16)tmpchar.attributes); + + if (flags & SaveMetrics) { + id = spmf->enc[i * 2] - firstChar; + assert(id <= spmf->max_id - firstChar); + spf->encoding[id].metrics = tmpchar; + } + } + + + if (num_chars > 0) + { + *sWidth = (int)(((double)*sWidth * 10.0 + (double)num_chars / 2.0) / + num_chars); + if (total_width < 0) + { + /* Predominant direction is R->L */ + *sWidth = -*sWidth; + } + spf->vals.width = (int)((double)*sWidth * spf->vals.pixel_matrix[0] / + 1000.0 + + (spf->vals.pixel_matrix[0] > 0 ? .5 : -.5)); + } + else + { + spf->vals.width = 0; + } + pinfo->maxbounds = maxchar; + pinfo->minbounds = minchar; + pinfo->ink_maxbounds = maxchar; + pinfo->ink_minbounds = minchar; + pinfo->maxOverlap = maxOverlap; +} + +void +sp_compute_props( + SpeedoFontPtr spf, + char *fontname, + FontInfoPtr pinfo, + long sWidth) +{ + FontPropPtr pp; + int i, + nprops; + fontProp *fpt; + char *is_str; + char *ptr1 = NULL, + *ptr2; + char *ptr3; + char tmpname[1024]; + FontScalableRec tmpvals; + + nprops = pinfo->nprops = NPROPS; + pinfo->isStringProp = (char *) xalloc(sizeof(char) * nprops); + pinfo->props = (FontPropPtr) xalloc(sizeof(FontPropRec) * nprops); + if (!pinfo->isStringProp || !pinfo->props) { + xfree(pinfo->isStringProp); + pinfo->isStringProp = (char *) 0; + xfree(pinfo->props); + pinfo->props = (FontPropPtr) 0; + pinfo->nprops = 0; + return; + } + bzero(pinfo->isStringProp, (sizeof(char) * nprops)); + + ptr2 = fontname; + for (i = NNAMEPROPS, pp = pinfo->props, fpt = fontNamePropTable, + is_str = pinfo->isStringProp; + i; + i--, pp++, fpt++, is_str++) { + + if (*ptr2) + { + ptr1 = ptr2 + 1; + if (!(ptr2 = strchr(ptr1, '-'))) ptr2 = strchr(ptr1, '\0'); + } + + pp->name = fpt->atom; + switch (fpt->type) { + case atom: + *is_str = TRUE; + pp->value = MakeAtom(ptr1, ptr2 - ptr1, TRUE); + break; + case truncate_atom: + *is_str = TRUE; + for (ptr3 = ptr1; *ptr3; ptr3++) + if (*ptr3 == '[') + break; + pp->value = MakeAtom(ptr1, ptr3 - ptr1, TRUE); + break; + case pixel_size: + pp->value = (int)(spf->vals.pixel_matrix[3] + + (spf->vals.pixel_matrix[3] > 0 ? .5 : -.5)); + break; + case point_size: + pp->value = (int)(spf->vals.point_matrix[3] * 10.0 + + (spf->vals.point_matrix[3] > 0 ? .5 : -.5)); + break; + case resolution_x: + pp->value = spf->vals.x; + break; + case resolution_y: + pp->value = spf->vals.y; + break; + case average_width: + pp->value = spf->vals.width; + break; + } + } + + for (i = 0, fpt = extraProps; i < NEXTRAPROPS; i++, is_str++, pp++, fpt++) { + pp->name = fpt->atom; + switch (i) { + case FONTPROP: + *is_str = TRUE; + strcpy(tmpname, fontname); + FontParseXLFDName(tmpname, &tmpvals, FONT_XLFD_REPLACE_ZERO); + FontParseXLFDName(tmpname, &spf->vals, FONT_XLFD_REPLACE_VALUE); + pp->value = MakeAtom(tmpname, strlen(tmpname), TRUE); + break; + case COPYRIGHTPROP: + *is_str = TRUE; + pp->value = MakeAtom(spf->master->copyright, + strlen(spf->master->copyright), TRUE); + break; + case FONT_TYPEPROP: + *is_str = TRUE; + pp->value = MakeAtom("Speedo", strlen("Speedo"), TRUE); + break; + case RASTERIZER_NAMEPROP: + *is_str = TRUE; + pp->value = MakeAtom("X Consortium Speedo Rasterizer", + strlen("X Consortium Speedo Rasterizer"), + TRUE); + break; + case RAWPIXELPROP: + *is_str = FALSE; + pp->value = 1000; + break; + case RAWPOINTPROP: + *is_str = FALSE; + pp->value = (long)(72270.0 / (double)spf->vals.y + .5); + break; + case RAWASCENTPROP: + *is_str = FALSE; + pp->value = STRETCH_FACTOR * 764 / 100; + break; + case RAWDESCENTPROP: + *is_str = FALSE; + pp->value = STRETCH_FACTOR * 236 / 100; + break; + case RAWWIDTHPROP: + *is_str = FALSE; + pp->value = sWidth; + break; + } + } +} |