R6.6 is the Xorg base-lineXORG-MAIN

1 files changed, 529 insertions, 0 deletions

diff --git a/src/bitmap/snfread.c b/src/bitmap/snfread.c
new file mode 100644
index 0000000..04982bc
--- /dev/null
+++ b/src/bitmap/snfread.c
@@ -0,0 +1,529 @@
+/* $Xorg: snfread.c,v 1.5 2001/02/09 02:04:02 xorgcvs Exp $ */
+/************************************************************************
+Copyright 1989 by Digital Equipment Corporation, Maynard, 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 name of Digital 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.
+
+************************************************************************/
+
+/*
+
+Copyright 1994, 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.
+
+*/
+
+#include <ctype.h>
+#include "fntfilst.h"
+#include "bitmap.h"
+#include "snfstr.h"
+
+#if NeedVarargsPrototypes
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
+
+void
+#if NeedVarargsPrototypes
+snfError(char* message, ...)
+#else
+snfError (message, va_alist)
+    char* message;
+    va_dcl
+#endif
+{
+    va_list args;
+
+#if NeedVarargsPrototypes
+    va_start (args, message);
+#else
+    va_start (args);
+#endif
+
+    fprintf(stderr, "SNF Error: ");
+    vfprintf(stderr, message, args);
+    va_end (args);
+}
+
+static void snfUnloadFont();
+
+static int
+snfReadCharInfo(file, charInfo, base)
+    FontFilePtr file;
+    CharInfoPtr charInfo;
+    char       *base;
+{
+    snfCharInfoRec snfCharInfo;
+
+#define Width(m)    ((m).rightSideBearing - (m).leftSideBearing)
+#define Height(m)   ((m).ascent + (m).descent)
+
+    if (FontFileRead(file, (char *) &snfCharInfo, sizeof snfCharInfo) !=
+	    sizeof(snfCharInfo)) {
+	return BadFontName;
+    }
+    charInfo->metrics = snfCharInfo.metrics;
+    if (snfCharInfo.exists)
+	charInfo->bits = base + snfCharInfo.byteOffset;
+    else
+	charInfo->bits = 0;
+    return Successful;
+}
+
+static int
+snfReadxCharInfo(file, charInfo)
+    FontFilePtr file;
+    xCharInfo  *charInfo;
+{
+    snfCharInfoRec snfCharInfo;
+
+    if (FontFileRead(file, (char *) &snfCharInfo, sizeof snfCharInfo) !=
+	    sizeof(snfCharInfo)) {
+	return BadFontName;
+    }
+    *charInfo = snfCharInfo.metrics;
+    return Successful;
+}
+
+static void
+snfCopyInfo(snfInfo, pFontInfo)
+    snfFontInfoPtr snfInfo;
+    FontInfoPtr pFontInfo;
+{
+    pFontInfo->firstCol = snfInfo->firstCol;
+    pFontInfo->lastCol = snfInfo->lastCol;
+    pFontInfo->firstRow = snfInfo->firstRow;
+    pFontInfo->lastRow = snfInfo->lastRow;
+    pFontInfo->defaultCh = snfInfo->chDefault;
+    pFontInfo->noOverlap = snfInfo->noOverlap;
+    pFontInfo->terminalFont = snfInfo->terminalFont;
+    pFontInfo->constantMetrics = snfInfo->constantMetrics;
+    pFontInfo->constantWidth = snfInfo->constantWidth;
+    pFontInfo->inkInside = snfInfo->inkInside;
+    pFontInfo->inkMetrics = snfInfo->inkMetrics;
+    pFontInfo->allExist = snfInfo->allExist;
+    pFontInfo->drawDirection = snfInfo->drawDirection;
+    pFontInfo->anamorphic = FALSE;
+    pFontInfo->cachable = TRUE;
+    pFontInfo->maxOverlap = 0;
+    pFontInfo->minbounds = snfInfo->minbounds.metrics;
+    pFontInfo->maxbounds = snfInfo->maxbounds.metrics;
+    pFontInfo->fontAscent = snfInfo->fontAscent;
+    pFontInfo->fontDescent = snfInfo->fontDescent;
+    pFontInfo->nprops = snfInfo->nProps;
+}
+
+static int
+snfReadProps(snfInfo, pFontInfo, file)
+    snfFontInfoPtr snfInfo;
+    FontInfoPtr pFontInfo;
+    FontFilePtr file;
+{
+    char       *strings;
+    FontPropPtr pfp;
+    snfFontPropPtr psnfp;
+    char       *propspace;
+    int         bytestoalloc;
+    int         i;
+
+    bytestoalloc = snfInfo->nProps * sizeof(snfFontPropRec) +
+	BYTESOFSTRINGINFO(snfInfo);
+    propspace = (char *) xalloc(bytestoalloc);
+    if (!propspace) {
+	snfError("snfReadProps(): Couldn't allocate propspace (%d)\n", bytestoalloc);
+	return AllocError;
+    }
+
+    if (FontFileRead(file, propspace, bytestoalloc) != bytestoalloc) {
+	xfree(propspace);
+	return BadFontName;
+    }
+    psnfp = (snfFontPropPtr) propspace;
+
+    strings = propspace + BYTESOFPROPINFO(snfInfo);
+
+    for (i = 0, pfp = pFontInfo->props; i < snfInfo->nProps; i++, pfp++, psnfp++) {
+	pfp->name = MakeAtom(&strings[psnfp->name],
+			     (unsigned) strlen(&strings[psnfp->name]), 1);
+	pFontInfo->isStringProp[i] = psnfp->indirect;
+	if (psnfp->indirect)
+	    pfp->value = (INT32) MakeAtom(&strings[psnfp->value],
+			       (unsigned) strlen(&strings[psnfp->value]), 1);
+	else
+	    pfp->value = psnfp->value;
+    }
+
+    xfree(propspace);
+    return Successful;
+}
+
+int
+snfReadHeader(snfInfo, file)
+    snfFontInfoPtr snfInfo;
+    FontFilePtr file;
+{
+    if (FontFileRead(file, (char *) snfInfo, sizeof *snfInfo) != sizeof *snfInfo)
+	return BadFontName;
+
+    if (snfInfo->version1 != FONT_FILE_VERSION ||
+	    snfInfo->version2 != FONT_FILE_VERSION)
+	return BadFontName;
+    return Successful;
+}
+
+static int  snf_set;
+static int  snf_bit, snf_byte, snf_glyph, snf_scan;
+
+void
+SnfSetFormat (bit, byte, glyph, scan)
+    int	bit, byte, glyph, scan;
+{
+    snf_bit = bit;
+    snf_byte = byte;
+    snf_glyph = glyph;
+    snf_scan = scan;
+    snf_set = 1;
+}
+
+void
+SnfGetFormat (bit, byte, glyph, scan)
+    int	*bit, *byte, *glyph, *scan;
+{
+    if (!snf_set)
+	FontDefaultFormat (&snf_bit, &snf_byte, &snf_glyph, &snf_scan);
+    *bit = snf_bit;
+    *byte = snf_byte;
+    *glyph = snf_glyph;
+    *scan = snf_scan;
+}
+
+int
+snfReadFont(pFont, file, bit, byte, glyph, scan)
+    FontPtr     pFont;
+    FontFilePtr file;
+    int         bit,
+                byte,
+                glyph,
+                scan;
+{
+    snfFontInfoRec fi;
+    unsigned    bytestoalloc;
+    int         i;
+    char       *fontspace;
+    BitmapFontPtr  bitmapFont;
+    int         num_chars;
+    int         bitmapsSize;
+    int         ret;
+    int         metrics_off;
+    int         encoding_off;
+    int         props_off;
+    int         isStringProp_off;
+    int         ink_off;
+    char	*bitmaps;
+    int		def_bit, def_byte, def_glyph, def_scan;
+
+    ret = snfReadHeader(&fi, file);
+    if (ret != Successful)
+	return ret;
+
+    SnfGetFormat (&def_bit, &def_byte, &def_glyph, &def_scan);
+
+    /*
+     * we'll allocate one chunk of memory and split it among the various parts
+     * of the font:
+     * 
+     * BitmapFontRec CharInfoRec's Glyphs Encoding DIX Properties Ink CharInfoRec's
+     *
+     * If the glyphpad is not the same as the font file, then the glyphs
+     * are allocated separately, to be later realloc'ed when we know
+     * how big to make them.
+     */
+
+    bitmapsSize = BYTESOFGLYPHINFO(&fi);
+    num_chars = n2dChars(&fi);
+    bytestoalloc = sizeof(BitmapFontRec);	/* bitmapFont */
+    metrics_off = bytestoalloc;
+    bytestoalloc += num_chars * sizeof(CharInfoRec);	/* metrics */
+    encoding_off = bytestoalloc;
+    bytestoalloc += num_chars * sizeof(CharInfoPtr);	/* encoding */
+    props_off = bytestoalloc;
+    bytestoalloc += fi.nProps * sizeof(FontPropRec);	/* props */
+    isStringProp_off = bytestoalloc;
+    bytestoalloc += fi.nProps * sizeof(char);	/* isStringProp */
+    bytestoalloc = (bytestoalloc + 3) & ~3;
+    ink_off = bytestoalloc;
+    if (fi.inkMetrics)
+	bytestoalloc += num_chars * sizeof(xCharInfo);	/* ink_metrics */
+
+    fontspace = (char *) xalloc(bytestoalloc);
+    if (!fontspace) {
+	snfError("snfReadFont(): Couldn't allocate fontspace (%d)\n", bytestoalloc);
+	return AllocError;
+    }
+
+    bitmaps = (char *) xalloc (bitmapsSize);
+    if (!bitmaps)
+    {
+	snfError("snfReadFont(): Couldn't allocate bitmaps (%d)\n", bitmapsSize);
+	xfree (fontspace);
+	return AllocError;
+    }
+    /*
+     * now fix up pointers
+     */
+
+    bitmapFont = (BitmapFontPtr) fontspace;
+    bitmapFont->num_chars = num_chars;
+    bitmapFont->metrics = (CharInfoPtr) (fontspace + metrics_off);
+    bitmapFont->encoding = (CharInfoPtr *) (fontspace + encoding_off);
+    bitmapFont->bitmaps = bitmaps;
+    bitmapFont->pDefault = NULL;
+    bitmapFont->bitmapExtra = NULL;
+    pFont->info.props = (FontPropPtr) (fontspace + props_off);
+    pFont->info.isStringProp = (char *) (fontspace + isStringProp_off);
+    if (fi.inkMetrics)
+	bitmapFont->ink_metrics = (xCharInfo *) (fontspace + ink_off);
+    else
+	bitmapFont->ink_metrics = 0;
+
+    /*
+     * read the CharInfo
+     */
+
+    ret = Successful;
+    for (i = 0; ret == Successful && i < num_chars; i++) {
+	ret = snfReadCharInfo(file, &bitmapFont->metrics[i], bitmaps);
+	if (bitmapFont->metrics[i].bits)
+	    bitmapFont->encoding[i] = &bitmapFont->metrics[i];
+	else
+	    bitmapFont->encoding[i] = 0;
+    }
+
+    if (ret != Successful) {
+	xfree(bitmaps);
+	xfree(fontspace);
+	return ret;
+    }
+    /*
+     * read the glyphs
+     */
+
+    if (FontFileRead(file, (char *) bitmaps, bitmapsSize) != bitmapsSize) {
+	xfree(bitmaps);
+	xfree(fontspace);
+	return BadFontName;
+    }
+
+    if (def_bit != bit)
+	BitOrderInvert(bitmaps, bitmapsSize);
+    if ((def_byte == def_bit) != (bit == byte)) {
+	switch (bit == byte ? def_scan : scan) {
+	case 1:
+	    break;
+	case 2:
+	    TwoByteSwap(bitmaps, bitmapsSize);
+	    break;
+	case 4:
+	    FourByteSwap(bitmaps, bitmapsSize);
+	    break;
+	}
+    }
+    if (def_glyph != glyph) {
+	char	    *padbitmaps;
+	int         sizepadbitmaps;
+	int	    sizechar;
+	CharInfoPtr metric;
+
+	sizepadbitmaps = 0;
+	metric = bitmapFont->metrics;
+	for (i = 0; i < num_chars; i++)
+	{
+	    if (metric->bits)
+		sizepadbitmaps += BYTES_FOR_GLYPH(metric,glyph);
+	    metric++;
+	}
+	padbitmaps = (char *) xalloc(sizepadbitmaps);
+	if (!padbitmaps) {
+	    snfError("snfReadFont(): Couldn't allocate padbitmaps (%d)\n", sizepadbitmaps);
+	    xfree (bitmaps);
+	    xfree (fontspace);
+	    return AllocError;
+	}
+	metric = bitmapFont->metrics;
+	bitmapFont->bitmaps = padbitmaps;
+	for (i = 0; i < num_chars; i++) {
+	    sizechar = RepadBitmap(metric->bits, padbitmaps,
+			       def_glyph, glyph,
+			       metric->metrics.rightSideBearing -
+			       metric->metrics.leftSideBearing,
+			       metric->metrics.ascent + metric->metrics.descent);
+	    metric->bits = padbitmaps;
+	    padbitmaps += sizechar;
+	    metric++;
+	}
+	xfree(bitmaps);
+    }
+
+    /* now read and atom'ize properties */
+
+    ret = snfReadProps(&fi, &pFont->info, file);
+    if (ret != Successful) {
+	xfree(fontspace);
+	return ret;
+    }
+    snfCopyInfo(&fi, &pFont->info);
+
+    /* finally, read the ink metrics if the exist */
+
+    if (fi.inkMetrics) {
+	ret = Successful;
+	ret = snfReadxCharInfo(file, &pFont->info.ink_minbounds);
+	ret = snfReadxCharInfo(file, &pFont->info.ink_maxbounds);
+	for (i = 0; ret == Successful && i < num_chars; i++)
+	    ret = snfReadxCharInfo(file, &bitmapFont->ink_metrics[i]);
+	if (ret != Successful) {
+	    xfree(fontspace);
+	    return ret;
+	}
+    } else {
+	pFont->info.ink_minbounds = pFont->info.minbounds;
+	pFont->info.ink_maxbounds = pFont->info.maxbounds;
+    }
+
+    if (pFont->info.defaultCh != (unsigned short) NO_SUCH_CHAR) {
+	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->metrics[r * cols + c];
+	}
+    }
+    bitmapFont->bitmapExtra = (BitmapExtraPtr) 0;
+    pFont->fontPrivate = (pointer) bitmapFont;
+    pFont->get_glyphs = bitmapGetGlyphs;
+    pFont->get_metrics = bitmapGetMetrics;
+    pFont->unload_font = snfUnloadFont;
+    pFont->unload_glyphs = NULL;
+    pFont->bit = bit;
+    pFont->byte = byte;
+    pFont->glyph = glyph;
+    pFont->scan = scan;
+    return Successful;
+}
+
+int
+snfReadFontInfo(pFontInfo, file)
+    FontInfoPtr pFontInfo;
+    FontFilePtr file;
+{
+    int         ret;
+    snfFontInfoRec fi;
+    int         bytestoskip;
+    int         num_chars;
+
+    ret = snfReadHeader(&fi, file);
+    if (ret != Successful)
+	return ret;
+    snfCopyInfo(&fi, pFontInfo);
+
+    pFontInfo->props = (FontPropPtr) xalloc(fi.nProps * sizeof(FontPropRec));
+    if (!pFontInfo->props) {
+	snfError("snfReadFontInfo(): Couldn't allocate props (%d*%d)\n", fi.nProps, sizeof(FontPropRec));
+	return AllocError;
+    }
+    pFontInfo->isStringProp = (char *) xalloc(fi.nProps * sizeof(char));
+    if (!pFontInfo->isStringProp) {
+	snfError("snfReadFontInfo(): Couldn't allocate isStringProp (%d*%d)\n", fi.nProps, sizeof(char));
+	xfree(pFontInfo->props);
+	return AllocError;
+    }
+    num_chars = n2dChars(&fi);
+    bytestoskip = num_chars * sizeof(snfCharInfoRec);	/* charinfos */
+    bytestoskip += BYTESOFGLYPHINFO(&fi);
+    FontFileSkip(file, bytestoskip);
+
+    ret = snfReadProps(&fi, pFontInfo, file);
+    if (ret != Successful) {
+	xfree(pFontInfo->props);
+	xfree(pFontInfo->isStringProp);
+	return ret;
+    }
+    if (fi.inkMetrics) {
+	ret = snfReadxCharInfo(file, &pFontInfo->ink_minbounds);
+	if (ret != Successful) {
+	    xfree(pFontInfo->props);
+	    xfree(pFontInfo->isStringProp);
+	    return ret;
+	}
+	ret = snfReadxCharInfo(file, &pFontInfo->ink_maxbounds);
+	if (ret != Successful) {
+	    xfree(pFontInfo->props);
+	    xfree(pFontInfo->isStringProp);
+	    return ret;
+	}
+    } else {
+	pFontInfo->ink_minbounds = pFontInfo->minbounds;
+	pFontInfo->ink_maxbounds = pFontInfo->maxbounds;
+    }
+    return Successful;
+
+}
+
+static void
+snfUnloadFont(pFont)
+    FontPtr	    pFont;
+{
+    BitmapFontPtr   bitmapFont;
+
+    bitmapFont = (BitmapFontPtr) pFont->fontPrivate;
+    xfree (bitmapFont->bitmaps);
+    xfree (bitmapFont);
+    xfree (pFont->devPrivates);
+    xfree (pFont);
+}
+