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vt1200/reference/x11-fontsrc/bdfread.1993.c
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/************************************************************************
Copyright 1989 by Digital Equipment Corporation, Maynard, Massachusetts,
and the Massachusetts Institute of Technology, Cambridge, Massachusetts.
All Rights Reserved
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
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 Digital or MIT not be
used in advertising or publicity pertaining to distribution of the
software without specific, written prior permission.
DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
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.
************************************************************************/
/* $XConsortium: bdfread.c,v 1.13 92/05/12 18:07:40 gildea Exp $ */
#include <ctype.h>
#include "fontfilest.h"
/* use bitmap structure */
#include "bitmap.h"
#include "bdfint.h"
#define INDICES 256
#define MAXENCODING 0xFFFF
#define BDFLINELEN 1024
extern int bitmapGetGlyphs(), bitmapGetMetrics();
extern int bitmapGetBitmaps(), bitmapGetExtents();
void bdfUnloadFont();
static Bool bdfPadToTerminal();
/***====================================================================***/
static Bool
bdfReadBitmap(pCI, file, bit, byte, glyph, scan, sizes)
CharInfoPtr pCI;
FontFilePtr file;
int bit,
byte,
glyph,
scan;
int sizes[GLYPHPADOPTIONS];
{
int widthBits,
widthBytes,
widthHexChars;
int height,
row;
int i,
inLineLen,
nextByte;
Bool badbits;
unsigned char *pInBits,
*picture,
*line = NULL;
char lineBuf[BDFLINELEN];
widthBits = GLYPHWIDTHPIXELS(pCI);
height = GLYPHHEIGHTPIXELS(pCI);
widthBytes = BYTES_PER_ROW(widthBits, glyph);
if (widthBytes * height > 0) {
picture = (unsigned char *) xalloc(widthBytes * height);
if (!picture)
goto BAILOUT;
} else
picture = NULL;
pCI->bits = (char *) picture;
if (sizes) {
for (i = 0; i < GLYPHPADOPTIONS; i++)
sizes[i] += BYTES_PER_ROW(widthBits, (1 << i)) * height;
}
badbits = FALSE;
nextByte = 0;
widthHexChars = BYTES_PER_ROW(widthBits, 1);
/* 5/31/89 (ef) -- hack, hack, hack. what *am* I supposed to do with */
/* 0 width characters? */
for (row = 0; row < height; row++) {
line = bdfGetLine(file, lineBuf, BDFLINELEN);
if (!line)
break;
if (widthBits == 0) {
if ((!line) || (bdfIsPrefix(line, "ENDCHAR")))
break;
else
continue;
}
pInBits = line;
inLineLen = strlen((char *) pInBits);
if (inLineLen & 1) {
bdfError("odd number of characters in hex encoding\n");
line[inLineLen++] = '0';
line[inLineLen] = '\0';
}
inLineLen >>= 1;
i = inLineLen;
if (i > widthHexChars)
i = widthHexChars;
for (; i > 0; i--, pInBits += 2)
picture[nextByte++] = bdfHexByte(pInBits);
/* pad if line is too short */
if (inLineLen < widthHexChars) {
for (i = widthHexChars - inLineLen; i > 0; i--)
picture[nextByte++] = 0;
} else {
unsigned char mask;
mask = 0xff << (8 - (widthBits & 0x7));
if (mask && picture[nextByte - 1] & ~mask) {
picture[nextByte - 1] &= mask;
badbits = TRUE;
} else if (inLineLen > widthHexChars)
badbits = TRUE;
}
if (widthBytes > widthHexChars) {
i = widthBytes - widthHexChars;
while (i-- > 0)
picture[nextByte++] = 0;
}
}
if ((line && (!bdfIsPrefix(line, "ENDCHAR"))) || (height == 0))
line = bdfGetLine(file, lineBuf, BDFLINELEN);
if ((!line) || (!bdfIsPrefix(line, "ENDCHAR"))) {
bdfError("missing 'ENDCHAR'\n");
goto BAILOUT;
}
if (nextByte != height * widthBytes) {
bdfError("bytes != rows * bytes_per_row (%d != %d * %d)\n",
nextByte, height, widthBytes);
goto BAILOUT;
}
if (picture != NULL) {
if (bit == LSBFirst)
BitOrderInvert(picture, nextByte);
if (bit != byte) {
if (scan == 2)
TwoByteSwap(picture, nextByte);
else if (scan == 4)
FourByteSwap(picture, nextByte);
}
}
return (TRUE);
BAILOUT:
if (picture)
xfree(picture);
pCI->bits = NULL;
return (FALSE);
}
/***====================================================================***/
static Bool
bdfSkipBitmap(file, height)
FontFilePtr file;
int height;
{
unsigned char *line;
int i = 0;
char lineBuf[BDFLINELEN];
do {
line = bdfGetLine(file, lineBuf, BDFLINELEN);
i++;
} while (line && !bdfIsPrefix(line, "ENDCHAR") && i <= height);
if (i > 1 && line && !bdfIsPrefix(line, "ENDCHAR")) {
bdfError("Error in bitmap, missing 'ENDCHAR'\n");
return (FALSE);
}
return (TRUE);
}
/***====================================================================***/
static Bool
bdfReadCharacters(file, pFont, pState, bit, byte, glyph, scan)
FontFilePtr file;
FontPtr pFont;
bdfFileState *pState;
int bit,
byte,
glyph,
scan;
{
unsigned char *line;
register CharInfoPtr ci;
int i,
ndx,
nchars,
nignored;
unsigned int char_row, char_col;
int numEncodedGlyphs = 0;
CharInfoPtr *bdfEncoding[256];
BitmapFontPtr bitmapFont;
BitmapExtraPtr bitmapExtra;
CARD32 *bitmapsSizes;
char lineBuf[BDFLINELEN];
int nencoding;
bitmapFont = (BitmapFontPtr) pFont->fontPrivate;
bitmapExtra = (BitmapExtraPtr) bitmapFont->bitmapExtra;
if (bitmapExtra) {
bitmapsSizes = bitmapExtra->bitmapsSizes;
for (i = 0; i < GLYPHPADOPTIONS; i++)
bitmapsSizes[i] = 0;
} else
bitmapsSizes = NULL;
bzero(bdfEncoding, sizeof(bdfEncoding));
bitmapFont->metrics = NULL;
ndx = 0;
line = bdfGetLine(file, lineBuf, BDFLINELEN);
if ((!line) || (sscanf((char *) line, "CHARS %d", &nchars) != 1)) {
bdfError("bad 'CHARS' in bdf file\n");
return (FALSE);
}
if (nchars < 1) {
bdfError("invalid number of CHARS in BDF file\n");
return (FALSE);
}
ci = (CharInfoPtr) xalloc(nchars * sizeof(CharInfoRec));
if (!ci) {
bdfError("Couldn't allocate pCI (%d*%d)\n", nchars,
sizeof(CharInfoRec));
goto BAILOUT;
}
bitmapFont->metrics = ci;
if (bitmapExtra) {
bitmapExtra->glyphNames = (Atom *) xalloc(nchars * sizeof(Atom));
if (!bitmapExtra->glyphNames) {
bdfError("Couldn't allocate glyphNames (%d*%d)\n",
nchars, sizeof(Atom));
goto BAILOUT;
}
}
if (bitmapExtra) {
bitmapExtra->sWidths = (int *) xalloc(nchars * sizeof(int));
if (!bitmapExtra->sWidths) {
bdfError("Couldn't allocate sWidth (%d *%d)\n",
nchars, sizeof(int));
return FALSE;
}
}
line = bdfGetLine(file, lineBuf, BDFLINELEN);
pFont->info.firstRow = 256;
pFont->info.lastRow = 0;
pFont->info.firstCol = 256;
pFont->info.lastCol = 0;
nignored = 0;
for (ndx = 0; (ndx < nchars) && (line) && (bdfIsPrefix(line, "STARTCHAR"));) {
int t;
int wx; /* x component of width */
int wy; /* y component of width */
int bw; /* bounding-box width */
int bh; /* bounding-box height */
int bl; /* bounding-box left */
int bb; /* bounding-box bottom */
int enc,
enc2; /* encoding */
unsigned char *p; /* temp pointer into line */
char charName[100];
int ignore;
if (sscanf((char *) line, "STARTCHAR %s", charName) != 1) {
bdfError("bad character name in BDF file\n");
goto BAILOUT; /* bottom of function, free and return error */
}
if (bitmapExtra)
bitmapExtra->glyphNames[ndx] = bdfForceMakeAtom(charName, NULL);
line = bdfGetLine(file, lineBuf, BDFLINELEN);
if (!line || (t = sscanf((char *) line, "ENCODING %d %d", &enc, &enc2)) < 1) {
bdfError("bad 'ENCODING' in BDF file\n");
goto BAILOUT;
}
if (enc < -1 || t == 2 && enc2 < -1) {
bdfError("bad ENCODING value");
goto BAILOUT;
}
if (t == 2 && enc == -1)
enc = enc2;
ignore = 0;
if (enc == -1) {
if (!bitmapExtra) {
nignored++;
ignore = 1;
}
} else if (enc > MAXENCODING) {
bdfError("char '%s' has encoding too large (%d)\n",
charName, enc);
} else {
char_row = (enc >> 8) & 0xFF;
char_col = enc & 0xFF;
if (char_row < pFont->info.firstRow)
pFont->info.firstRow = char_row;
if (char_row > pFont->info.lastRow)
pFont->info.lastRow = char_row;
if (char_col < pFont->info.firstCol)
pFont->info.firstCol = char_col;
if (char_col > pFont->info.lastCol)
pFont->info.lastCol = char_col;
if (bdfEncoding[char_row] == (CharInfoPtr *) NULL) {
bdfEncoding[char_row] =
(CharInfoPtr *) xalloc(256 * sizeof(CharInfoPtr));
if (!bdfEncoding[char_row]) {
bdfError("Couldn't allocate row %d of encoding (%d*%d)\n",
char_row, INDICES, sizeof(CharInfoPtr));
goto BAILOUT;
}
for (i = 0; i < 256; i++)
bdfEncoding[char_row][i] = (CharInfoPtr) NULL;
}
if (bdfEncoding[char_row] != NULL) {
bdfEncoding[char_row][char_col] = ci;
numEncodedGlyphs++;
}
}
line = bdfGetLine(file, lineBuf, BDFLINELEN);
if ((!line) || (sscanf((char *) line, "SWIDTH %d %d", &wx, &wy) != 2)) {
bdfError("bad 'SWIDTH'\n");
goto BAILOUT;
}
if (wy != 0) {
bdfError("SWIDTH y value must be zero\n");
goto BAILOUT;
}
if (bitmapExtra)
bitmapExtra->sWidths[ndx] = wx;
/* 5/31/89 (ef) -- we should be able to ditch the character and recover */
/* from all of these. */
line = bdfGetLine(file, lineBuf, BDFLINELEN);
if ((!line) || (sscanf((char *) line, "DWIDTH %d %d", &wx, &wy) != 2)) {
bdfError("bad 'DWIDTH'\n");
goto BAILOUT;
}
if (wy != 0) {
bdfError("DWIDTH y value must be zero\n");
goto BAILOUT;
}
line = bdfGetLine(file, lineBuf, BDFLINELEN);
if ((!line) || (sscanf((char *) line, "BBX %d %d %d %d", &bw, &bh, &bl, &bb) != 4)) {
bdfError("bad 'BBX'\n");
goto BAILOUT;
}
if ((bh < 0) || (bw < 0)) {
bdfError("character '%s' has a negative sized bitmap, %dx%d\n",
charName, bw, bh);
goto BAILOUT;
}
line = bdfGetLine(file, lineBuf, BDFLINELEN);
if ((line) && (bdfIsPrefix(line, "ATTRIBUTES"))) {
for (p = line + strlen("ATTRIBUTES ");
(*p == ' ') || (*p == '\t');
p++)
/* empty for loop */ ;
ci->metrics.attributes = bdfHexByte(p) << 8 + bdfHexByte(p + 2);
line = bdfGetLine(file, lineBuf, BDFLINELEN);
} else
ci->metrics.attributes = 0;
if (!line || !bdfIsPrefix(line, "BITMAP")) {
bdfError("missing 'BITMAP'\n");
goto BAILOUT;
}
/* collect data for generated properties */
if ((strlen(charName) == 1)) {
if ((charName[0] >= '0') && (charName[0] <= '9')) {
pState->digitWidths += wx;
pState->digitCount++;
} else if (charName[0] == 'x') {
pState->exHeight = (bh + bb) <= 0 ? bh : bh + bb;
}
}
if (!ignore) {
ci->metrics.leftSideBearing = bl;
ci->metrics.rightSideBearing = bl + bw;
ci->metrics.ascent = bh + bb;
ci->metrics.descent = -bb;
ci->metrics.characterWidth = wx;
ci->bits = NULL;
bdfReadBitmap(ci, file, bit, byte, glyph, scan, bitmapsSizes);
ci++;
ndx++;
} else
bdfSkipBitmap(file, bh);
line = bdfGetLine(file, lineBuf, BDFLINELEN); /* get STARTCHAR or
* ENDFONT */
}
if (ndx + nignored != nchars) {
bdfError("%d too few characters\n", nchars - (ndx + nignored));
goto BAILOUT;
}
nchars = ndx;
bitmapFont->num_chars = nchars;
if ((line) && (bdfIsPrefix(line, "STARTCHAR"))) {
bdfError("more characters than specified\n");
goto BAILOUT;
}
if ((!line) || (!bdfIsPrefix(line, "ENDFONT"))) {
bdfError("missing 'ENDFONT'\n");
goto BAILOUT;
}
if (numEncodedGlyphs == 0)
bdfWarning("No characters with valid encodings\n");
nencoding = (pFont->info.lastRow - pFont->info.firstRow + 1) *
(pFont->info.lastCol - pFont->info.firstCol + 1);
bitmapFont->encoding = (CharInfoPtr *) xalloc(nencoding * sizeof(CharInfoPtr));
if (!bitmapFont->encoding) {
bdfError("Couldn't allocate ppCI (%d,%d)\n",
nencoding,
sizeof(CharInfoPtr));
goto BAILOUT;
}
pFont->info.allExist = TRUE;
i = 0;
for (char_row = pFont->info.firstRow;
char_row <= pFont->info.lastRow;
char_row++) {
if (bdfEncoding[char_row] == (CharInfoPtr *) NULL) {
pFont->info.allExist = FALSE;
for (char_col = pFont->info.firstCol;
char_col <= pFont->info.lastCol;
char_col++) {
bitmapFont->encoding[i++] = NullCharInfo;
}
} else {
for (char_col = pFont->info.firstCol;
char_col <= pFont->info.lastCol;
char_col++) {
if (!bdfEncoding[char_row][char_col])
pFont->info.allExist = FALSE;
bitmapFont->encoding[i++] = bdfEncoding[char_row][char_col];
}
}
}
for (i = 0; i < 256; i++)
if (bdfEncoding[i])
xfree(bdfEncoding[i]);
return (TRUE);
BAILOUT:
for (i = 0; i < 256; i++)
if (bdfEncoding[i])
xfree(bdfEncoding[i]);
/* bdfFreeFontBits will clean up the rest */
return (FALSE);
}
/***====================================================================***/
Bool
bdfReadHeader(file, pState)
FontFilePtr file;
bdfFileState *pState;
{
unsigned char *line;
char namebuf[BDFLINELEN];
int tmp;
char lineBuf[BDFLINELEN];
line = bdfGetLine(file, lineBuf, BDFLINELEN);
if (!line || sscanf((char *) line, "STARTFONT %s", namebuf) != 1 ||
!bdfStrEqual(namebuf, "2.1")) {
bdfError("bad 'STARTFONT'\n");
return (FALSE);
}
line = bdfGetLine(file, lineBuf, BDFLINELEN);
if (!line || sscanf((char *) line, "FONT %[^\n]", pState->fontName) != 1) {
bdfError("bad 'FONT'\n");
return (FALSE);
}
line = bdfGetLine(file, lineBuf, BDFLINELEN);
if (!line || !bdfIsPrefix(line, "SIZE")) {
bdfError("missing 'SIZE'\n");
return (FALSE);
}
if (sscanf((char *) line, "SIZE %f%d%d", &pState->pointSize,
&pState->resolution_x, &pState->resolution_y) != 3) {
bdfError("bad 'SIZE'\n");
return (FALSE);
}
if (pState->pointSize < 1 ||
pState->resolution_x < 1 || pState->resolution_y < 1) {
bdfError("SIZE values must be > 0\n");
return (FALSE);
}
line = bdfGetLine(file, lineBuf, BDFLINELEN);
if (!line || !bdfIsPrefix(line, "FONTBOUNDINGBOX")) {
bdfError("missing 'FONTBOUNDINGBOX'\n");
return (FALSE);
}
return (TRUE);
}
/***====================================================================***/
static Bool
bdfReadProperties(file, pFont, pState)
FontFilePtr file;
FontPtr pFont;
bdfFileState *pState;
{
int nProps,
nextProp;
char *stringProps;
FontPropPtr props;
char namebuf[BDFLINELEN],
secondbuf[BDFLINELEN],
thirdbuf[BDFLINELEN];
unsigned char *line;
char lineBuf[BDFLINELEN];
BitmapFontPtr bitmapFont = (BitmapFontPtr) pFont->fontPrivate;
line = bdfGetLine(file, lineBuf, BDFLINELEN);
if (!line || !bdfIsPrefix(line, "STARTPROPERTIES")) {
bdfError(file, "missing 'STARTPROPERTIES'\n");
return (FALSE);
}
if (sscanf((char *) line, "STARTPROPERTIES %d", &nProps) != 1) {
bdfError("bad 'STARTPROPERTIES'\n");
return (FALSE);
}
pFont->info.isStringProp = NULL;
pFont->info.props = NULL;
stringProps = (char *) xalloc((nProps + BDF_GENPROPS) * sizeof(char));
pFont->info.isStringProp = stringProps;
if (stringProps == NULL) {
bdfError("Couldn't allocate stringProps (%d*%d)\n",
(nProps + BDF_GENPROPS), sizeof(Bool));
goto BAILOUT;
}
pFont->info.props = props = (FontPropPtr) xalloc((nProps + BDF_GENPROPS) *
sizeof(FontPropRec));
if (props == NULL) {
bdfError("Couldn't allocate props (%d*%d)\n", (nProps + BDF_GENPROPS,
sizeof(FontPropRec)));
goto BAILOUT;
}
nextProp = 0;
while (nProps-- > 0) {
line = bdfGetLine(file, lineBuf, BDFLINELEN);
if (line == NULL || bdfIsPrefix(line, "ENDPROPERTIES")) {
bdfError("%d too few properites\n", nProps + 1);
goto BAILOUT;
}
while (*line && isspace(*line))
line++;
switch (sscanf((char *) line, "%s%s%s", namebuf, secondbuf, thirdbuf)) {
default:
bdfError("missing '%s' parameter value\n", namebuf);
goto BAILOUT;
break;
case 2:
/*
* Possibilites include: valid quoted string with no white space
* valid integer value invalid value
*/
if (secondbuf[0] == '"') {
stringProps[nextProp] = TRUE;
props[nextProp].value =
bdfGetPropertyValue(line + strlen(namebuf) + 1);
if (!props[nextProp].value)
goto BAILOUT;
break;
} else if (bdfIsInteger(secondbuf)) {
stringProps[nextProp] = FALSE;
props[nextProp].value = atoi(secondbuf);
break;
} else {
bdfError("invalid '%s' parameter value\n", namebuf);
goto BAILOUT;
}
case 3:
/*
* Possibilites include: valid quoted string with some white space
* invalid value (reject even if second string is integer)
*/
if (secondbuf[0] == '"') {
stringProps[nextProp] = TRUE;
props[nextProp].value =
bdfGetPropertyValue(line + strlen(namebuf) + 1);
if (!props[nextProp].value)
goto BAILOUT;
break;
} else {
bdfError("invalid '%s' parameter value\n", namebuf);
goto BAILOUT;
}
}
props[nextProp].name = bdfForceMakeAtom(namebuf, NULL);
if (props[nextProp].name == None) {
bdfError("Empty property name.\n");
goto BAILOUT;
}
if (!bdfSpecialProperty(pFont, &props[nextProp],
stringProps[nextProp], pState))
nextProp++;
}
line = bdfGetLine(file, lineBuf, BDFLINELEN);
if (!line || !bdfIsPrefix(line, "ENDPROPERTIES")) {
bdfError("missing 'ENDPROPERTIES'\n");
goto BAILOUT;
}
if (!pState->haveFontAscent || !pState->haveFontDescent) {
bdfError("missing 'FONT_ASCENT' or 'FONT_DESCENT' properties\n");
goto BAILOUT;
}
if (bitmapFont->bitmapExtra) {
bitmapFont->bitmapExtra->info.fontAscent = pFont->info.fontAscent;
bitmapFont->bitmapExtra->info.fontDescent = pFont->info.fontDescent;
}
if (!pState->pointSizeProp) {
props[nextProp].name = bdfForceMakeAtom("POINT_SIZE", NULL);
props[nextProp].value = (INT32) (pState->pointSize * 10.0);
stringProps[nextProp] = FALSE;
pState->pointSizeProp = &props[nextProp];
nextProp++;
}
if (!pState->fontProp) {
props[nextProp].name = bdfForceMakeAtom("FONT", NULL);
props[nextProp].value = (INT32) bdfForceMakeAtom(pState->fontName, NULL);
stringProps[nextProp] = TRUE;
pState->fontProp = &props[nextProp];
nextProp++;
}
if (!pState->weightProp) {
props[nextProp].name = bdfForceMakeAtom("WEIGHT", NULL);
props[nextProp].value = -1; /* computed later */
stringProps[nextProp] = FALSE;
pState->weightProp = &props[nextProp];
nextProp++;
}
if (!pState->resolutionProp &&
pState->resolution_x == pState->resolution_y) {
props[nextProp].name = bdfForceMakeAtom("RESOLUTION", NULL);
props[nextProp].value = (INT32) ((pState->resolution_x * 100.0) / 72.27);
stringProps[nextProp] = FALSE;
pState->resolutionProp = &props[nextProp];
nextProp++;
}
if (!pState->resolutionXProp) {
props[nextProp].name = bdfForceMakeAtom("RESOLUTION_X", NULL);
props[nextProp].value = (INT32) pState->resolution_x;
stringProps[nextProp] = FALSE;
pState->resolutionProp = &props[nextProp];
nextProp++;
}
if (!pState->resolutionYProp) {
props[nextProp].name = bdfForceMakeAtom("RESOLUTION_Y", NULL);
props[nextProp].value = (INT32) pState->resolution_y;
stringProps[nextProp] = FALSE;
pState->resolutionProp = &props[nextProp];
nextProp++;
}
if (!pState->xHeightProp) {
props[nextProp].name = bdfForceMakeAtom("X_HEIGHT", NULL);
props[nextProp].value = -1; /* computed later */
stringProps[nextProp] = FALSE;
pState->xHeightProp = &props[nextProp];
nextProp++;
}
if (!pState->quadWidthProp) {
props[nextProp].name = bdfForceMakeAtom("QUAD_WIDTH", NULL);
props[nextProp].value = -1; /* computed later */
stringProps[nextProp] = FALSE;
pState->quadWidthProp = &props[nextProp];
nextProp++;
}
pFont->info.nprops = nextProp;
return (TRUE);
BAILOUT:
if (pFont->info.isStringProp) {
xfree(pFont->info.isStringProp);
pFont->info.isStringProp = NULL;
}
if (pFont->info.props) {
xfree(pFont->info.props);
pFont->info.props = NULL;
}
while (line && bdfIsPrefix(line, "ENDPROPERTIES"))
line = bdfGetLine(file, lineBuf, BDFLINELEN);
return (FALSE);
}
/***====================================================================***/
int
bdfReadFont(pFont, file, bit, byte, glyph, scan)
FontPtr pFont;
FontFilePtr file;
int bit,
byte,
glyph,
scan;
{
bdfFileState state;
xCharInfo *min,
*max;
BitmapFontPtr bitmapFont;
pFont->fontPrivate = 0;
bzero(&state, sizeof(bdfFileState));
if (!bdfReadHeader(file, &state))
goto BAILOUT;
bitmapFont = (BitmapFontPtr) xalloc(sizeof(BitmapFontRec));
if (!bitmapFont)
goto BAILOUT;
pFont->fontPrivate = (pointer) bitmapFont;
bitmapFont->metrics = 0;
bitmapFont->ink_metrics = 0;
bitmapFont->bitmaps = 0;
bitmapFont->encoding = 0;
bitmapFont->pDefault = NULL;
bitmapFont->bitmapExtra = (BitmapExtraPtr) xalloc(sizeof(BitmapExtraRec));
bitmapFont->bitmapExtra->glyphNames = 0;
bitmapFont->bitmapExtra->sWidths = 0;
if (!bdfReadProperties(file, pFont, &state))
goto BAILOUT;
if (!bdfReadCharacters(file, pFont, &state, bit, byte, glyph, scan))
goto BAILOUT;
if (state.haveDefaultCh) {
unsigned int r, c, cols;
r = pFont->info.defaultCh >> 8;
c = pFont->info.defaultCh & 0xFF;
if (pFont->info.firstRow <= r && r <= pFont->info.lastRow &&
pFont->info.firstCol <= c && c <= pFont->info.lastCol) {
cols = pFont->info.lastCol - pFont->info.firstCol + 1;
r = r - pFont->info.firstRow;
c = c - pFont->info.firstCol;
bitmapFont->pDefault = bitmapFont->encoding[r * cols + c];
}
}
pFont->bit = bit;
pFont->byte = byte;
pFont->glyph = glyph;
pFont->scan = scan;
pFont->info.anamorphic = FALSE;
bitmapComputeFontBounds(pFont);
if (FontCouldBeTerminal(&pFont->info)) {
bdfPadToTerminal(pFont);
bitmapComputeFontBounds(pFont);
}
FontComputeInfoAccelerators(&pFont->info);
if (bitmapFont->bitmapExtra)
FontComputeInfoAccelerators(&bitmapFont->bitmapExtra->info);
if (pFont->info.constantMetrics)
bitmapAddInkMetrics(pFont);
if (bitmapFont->bitmapExtra)
bitmapFont->bitmapExtra->info.inkMetrics = pFont->info.inkMetrics;
bitmapComputeFontInkBounds(pFont);
/* ComputeFontAccelerators (pFont); */
/* generate properties */
min = &pFont->info.ink_minbounds;
max = &pFont->info.ink_maxbounds;
if (state.xHeightProp && (state.xHeightProp->value == -1))
state.xHeightProp->value = state.exHeight ?
state.exHeight : min->ascent;
if (state.quadWidthProp && (state.quadWidthProp->value == -1))
state.quadWidthProp->value = state.digitCount ?
(INT32) ((float) state.digitWidths / (float) state.digitCount) :
(min->characterWidth + max->characterWidth) / 2;
if (state.weightProp && (state.weightProp->value == -1))
state.weightProp->value = bitmapComputeWeight(pFont);
pFont->get_glyphs = bitmapGetGlyphs;
pFont->get_metrics = bitmapGetMetrics;
pFont->unload_font = bdfUnloadFont;
return Successful;
BAILOUT:
if (pFont->fontPrivate)
bdfFreeFontBits (pFont);
return AllocError;
}
bdfFreeFontBits(pFont)
FontPtr pFont;
{
BitmapFontPtr bitmapFont;
BitmapExtraPtr bitmapExtra;
int i;
bitmapFont = (BitmapFontPtr) pFont->fontPrivate;
bitmapExtra = (BitmapExtraPtr) bitmapFont->bitmapExtra;
xfree(bitmapFont->ink_metrics);
xfree(bitmapFont->encoding);
for (i = 0; i < bitmapFont->num_chars; i++)
xfree(bitmapFont->metrics[i].bits);
xfree(bitmapFont->metrics);
if (bitmapExtra)
{
xfree (bitmapExtra->glyphNames);
xfree (bitmapExtra->sWidths);
xfree (bitmapExtra);
}
xfree(pFont->info.props);
xfree(bitmapFont);
}
int
bdfReadFontInfo(pFontInfo, file)
FontInfoPtr pFontInfo;
FontFilePtr file;
{
FontRec font;
int ret;
ret = bdfReadFont(&font, file, MSBFirst, LSBFirst, 1, 1);
if (ret == Successful) {
*pFontInfo = font.info;
font.info.props = 0;
font.info.isStringProp = 0;
font.info.nprops = 0;
bdfFreeFontBits (&font);
}
return ret;
}
void
bdfUnloadFont(pFont)
FontPtr pFont;
{
bdfFreeFontBits (pFont);
xfree(pFont);
}
static Bool
bdfPadToTerminal(pFont)
FontPtr pFont;
{
BitmapFontPtr bitmapFont;
BitmapExtraPtr bitmapExtra;
int i;
int new_size;
CharInfoRec new;
int w,
h;
bitmapFont = (BitmapFontPtr) pFont->fontPrivate;
new.metrics.ascent = pFont->info.fontAscent;
new.metrics.descent = pFont->info.fontDescent;
new.metrics.leftSideBearing = 0;
new.metrics.rightSideBearing = pFont->info.minbounds.characterWidth;
new.metrics.characterWidth = new.metrics.rightSideBearing;
new_size = BYTES_FOR_GLYPH(&new, pFont->glyph);
for (i = 0; i < bitmapFont->num_chars; i++) {
new.bits = (char *) xalloc(new_size);
if (!new.bits)
return FALSE;
FontCharReshape(pFont, &bitmapFont->metrics[i], &new);
xfree(bitmapFont->metrics[i].bits);
bitmapFont->metrics[i] = new;
}
bitmapExtra = bitmapFont->bitmapExtra;
if (bitmapExtra) {
w = GLYPHWIDTHPIXELS(&new);
h = GLYPHHEIGHTPIXELS(&new);
for (i = 0; i < GLYPHPADOPTIONS; i++)
bitmapExtra->bitmapsSizes[i] = bitmapFont->num_chars *
(BYTES_PER_ROW(w, 1 << i) * h);
}
return TRUE;
}
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