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Diffstat (limited to 'chars.c')
| -rw-r--r-- | chars.c | 215 |
1 files changed, 215 insertions, 0 deletions
@@ -0,0 +1,215 @@ +/* $Xorg: chars.c,v 1.4 2001/02/09 02:05:30 xorgcvs Exp $ */ +/* + +Copyright 1990, 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. + + * Copyright 1990 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. + */ + +#include <stdio.h> +#include <X11/Xlib.h> +#include "FSlib.h" + +extern long yResolution; /* intended vertical resoultion for font */ +extern long pointSize; /* font height in points */ + +#define BIT_ORDER BitmapFormatBitOrderMSB +#define BYTE_ORDER BitmapFormatByteOrderMSB +#define SCANLINE_UNIT BitmapFormatScanlineUnit8 +#define SCANLINE_PAD BitmapFormatScanlinePad8 +#define EXTENTS BitmapFormatImageRectMin + +#define SCANLINE_PAD_BYTES 1 + +#define GLWIDTHBYTESPADDED(bits, nBytes) \ + ((nBytes) == 1 ? (((bits) + 7) >> 3) /* pad to 1 byte */\ + :(nBytes) == 2 ? ((((bits) + 15) >> 3) & ~1) /* pad to 2 bytes */\ + :(nBytes) == 4 ? ((((bits) + 31) >> 3) & ~3) /* pad to 4 bytes */\ + :(nBytes) == 8 ? ((((bits) + 63) >> 3) & ~7) /* pad to 8 bytes */\ + : 0) + + +static void +EmitBitmap(outFile, fontHeader, charInfo, encoding, bpr, data) + FILE *outFile; + FSXFontInfoHeader *fontHeader; + FSXCharInfo *charInfo; + unsigned int encoding; + int bpr; + unsigned char *data; +{ + char *glyphName; + unsigned int row; + + /*- + * format: + * STARTCHAR name + * ENCODING index + * SWIDTH scalablewidth 0 + * DWIDTH pixels 0 + * BBX width height xoff yoff + * ATTRIBUTES xxxx + * BITMAP hhhhhhhh ... + * ENDCHAR + * + * where, SWIDTH * (point / 1000) * (yres / 72) = DWIDTH or, + * SWIDTH = 72000 * + * DWIDTH / (point * yres) + */ + + fprintf(outFile, "STARTCHAR "); + glyphName = XKeysymToString((KeySym) encoding); + if (glyphName) + fputs(glyphName, outFile); + else + fprintf(outFile, (fontHeader->char_range.min_char.low > 0 ? + "C%06o" : "C%03o"), encoding); + fputc('\n', outFile); + fprintf(outFile, "ENCODING %u\n", encoding); + fprintf(outFile, "SWIDTH %ld 0\n", + (((long) charInfo->width) * 72000L) / + (pointSize * yResolution)); + fprintf(outFile, "DWIDTH %d 0\n", charInfo->width); + fprintf(outFile, "BBX %d %d %d %d\n", + charInfo->right - charInfo->left, + charInfo->ascent + charInfo->descent, + charInfo->left, + -charInfo->descent); + if (charInfo->attributes) + fprintf(outFile, "ATTRIBUTES 0x%04x\n", charInfo->attributes); + + /* + * emit the bitmap + */ + fprintf(outFile, "BITMAP\n"); + for (row = 0; row < (charInfo->ascent + charInfo->descent); row++) { + unsigned byte; + unsigned bit; + + static unsigned maskTab[] = + { + (1 << 7), (1 << 6), (1 << 5), (1 << 4), + (1 << 3), (1 << 2), (1 << 1), (1 << 0), + }; + + byte = 0; + for (bit = 0; bit < (charInfo->right - charInfo->left); bit++) { + byte |= maskTab[bit & 7] & data[bit >> 3]; + if ((bit & 7) == 7) { + fprintf(outFile, "%02x", byte); + byte = 0; + } + } + if ((bit & 7) != 0) + fprintf(outFile, "%02x", byte); + fputc('\n', outFile); + data += bpr; + } + fprintf(outFile, "ENDCHAR\n"); +} + + +Bool +EmitCharacters(outFile, fontServer, fontHeader, fontID) + FILE *outFile; + FSServer *fontServer; + FSXFontInfoHeader *fontHeader; + Font fontID; +{ + FSXCharInfo *extents; + FSXCharInfo *charInfo; + int encoding; + FSOffset *offsets; + unsigned char *glyph; + unsigned char *glyphs; + unsigned int nChars; + int firstChar; + int lastChar; + int ch; + FSBitmapFormat format; + + nChars = 0; + + format = BYTE_ORDER | BIT_ORDER | SCANLINE_UNIT | + SCANLINE_PAD | EXTENTS; + firstChar = (fontHeader->char_range.min_char.high << 8) + + fontHeader->char_range.min_char.low; + lastChar = (fontHeader->char_range.max_char.high << 8) + + fontHeader->char_range.max_char.low; + + (void) FSQueryXExtents16(fontServer, fontID, True, (FSChar2b *) 0, 0, + &extents); + (void) FSQueryXBitmaps16(fontServer, fontID, format, True, (FSChar2b *) 0, + 0, &offsets, &glyphs); + + charInfo = extents; + /* calculate the actual number of chars */ + for (ch = 0; ch <= (lastChar - firstChar); ch++) { + if ((charInfo->width != 0) || (charInfo->left != charInfo->right)) + nChars++; + charInfo++; + } + + fprintf(outFile, "CHARS %u\n", nChars); + + /* + * actually emit the characters + */ + charInfo = extents; + encoding = firstChar; + glyph = glyphs; + for (ch = 0; ch <= (lastChar - firstChar); ch++) { + int bpr; + + bpr = GLWIDTHBYTESPADDED((charInfo->right - charInfo->left), + SCANLINE_PAD_BYTES); + if ((charInfo->width != 0) || (charInfo->right != charInfo->left)) + EmitBitmap(outFile, fontHeader, charInfo, encoding, bpr, glyph); + glyph += (charInfo->descent + charInfo->ascent) * bpr; + + charInfo++; + encoding++; + } + FSFree((char *) extents); + FSFree((char *) glyphs); + FSFree((char *) offsets); + return (True); +} |