/* * FIG : Facility for Interactive Generation of figures * Parts Copyright (c) 1994 by Brian V. Smith * * The X Consortium, and any party obtaining a copy of these files from * the X Consortium, directly or indirectly, is granted, free of charge, a * full and unrestricted irrevocable, world-wide, paid up, royalty-free, * nonexclusive right and license to deal in this software and * documentation files (the "Software"), including without limitation the * rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons who receive * copies from any such party to do so, with the only requirement being * that this copyright notice remain intact. This license includes without * limitation a license to do the foregoing actions under any patents of * the party supplying this software to the X Consortium. */ #include "fig.h" #include "resources.h" #include "object.h" #include "w_setup.h" extern FILE *open_picfile(); extern void close_picfile(); int read_bitmap(pic) /* attempt to read a bitmap for the item given -- return 1 if success */ F_pic *pic; { int status; unsigned int x, y; /* first try for a X Bitmap file format */ status = ReadDataFromBitmapFile(pic->file, &x, &y, &pic->bitmap); if (status == BitmapSuccess) { pic->subtype = T_PIC_BITMAP; pic->hw_ratio = (float) y / x; pic->numcols = 0; pic->bit_size.x = x; pic->bit_size.y = y; pic->size_x = x * ZOOM_FACTOR; pic->size_y = y * ZOOM_FACTOR; put_msg("XBitmap object of size %dx%d read OK", x, y); return 1; } /* Non Bitmap file */ return FileInvalid; } /* The following is a modified version of the XReadBitmapFromFile() routine from the X11R5 distribution. This version reads the XBM file into a data array rather than creating the pixmap directly. Also, it will uncompress or gunzip the file if necessary. */ /* $XConsortium: XRdBitF.c,v 1.15 91/02/01 16:34:46 gildea Exp $ */ /* Copyright, 1987, Massachusetts Institute of Technology */ /* 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 M.I.T. not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. M.I.T. makes no representations about the suitability of this software for any purpose. It is provided "as is" without express or implied warranty. */ /* * Code to read bitmaps from disk files. Interprets * data from X10 and X11 bitmap files. * * Modified for speedup by Jim Becker, changed image * data parsing logic (removed some fscanf()s). * Aug 5, 1988 * * Note that this file and ../Xmu/RdBitF.c look very similar.... Keep them * that way (but don't use common source code so that people can have one * without the other). */ #define MAX_SIZE 255 /* shared data for the image read/parse logic */ static short hexTable[256]; /* conversion value */ static Bool initialized = False; /* easier to fill in at run time */ /* * Table index for the hex values. Initialized once, first time. * Used for translation value or delimiter significance lookup. */ static void initHexTable() { /* * We build the table at run time for several reasons: * * 1. portable to non-ASCII machines. * 2. still reentrant since we set the init flag after setting table. * 3. easier to extend. * 4. less prone to bugs. */ hexTable['0'] = 0; hexTable['1'] = 1; hexTable['2'] = 2; hexTable['3'] = 3; hexTable['4'] = 4; hexTable['5'] = 5; hexTable['6'] = 6; hexTable['7'] = 7; hexTable['8'] = 8; hexTable['9'] = 9; hexTable['A'] = 10; hexTable['B'] = 11; hexTable['C'] = 12; hexTable['D'] = 13; hexTable['E'] = 14; hexTable['F'] = 15; hexTable['a'] = 10; hexTable['b'] = 11; hexTable['c'] = 12; hexTable['d'] = 13; hexTable['e'] = 14; hexTable['f'] = 15; /* delimiters of significance are flagged w/ negative value */ hexTable[' '] = -1; hexTable[','] = -1; hexTable['}'] = -1; hexTable['\n'] = -1; hexTable['\t'] = -1; initialized = True; } /* * read next hex value in the input stream, return -1 if EOF */ static NextInt (fstream) FILE *fstream; { int ch; int value = 0; int ret_value = 0; int gotone = 0; int done = 0; /* loop, accumulate hex value until find delimiter */ /* skip any initial delimiters found in read stream */ while (!done) { ch = getc(fstream); if (ch == EOF) { value = -1; done++; } else { /* trim high bits, check type and accumulate */ ch &= 0xff; if (isascii(ch) && isxdigit(ch)) { value = (value << 4) + hexTable[ch]; gotone++; } else if ((hexTable[ch]) < 0 && gotone) done++; } } ret_value = 0; if (value & 0x80) ret_value |= 0x01; if (value & 0x40) ret_value |= 0x02; if (value & 0x20) ret_value |= 0x04; if (value & 0x10) ret_value |= 0x08; if (value & 0x08) ret_value |= 0x10; if (value & 0x04) ret_value |= 0x20; if (value & 0x02) ret_value |= 0x40; if (value & 0x01) ret_value |= 0x80; return ret_value; } int ReadDataFromBitmapFile (filename, width, height, data_ret) char *filename; unsigned int *width, *height; /* RETURNED */ char **data_ret; /* RETURNED */ { FILE *fstream; /* handle on file */ char *data = NULL; /* working variable */ char line[MAX_SIZE]; /* input line from file */ int size; /* number of bytes of data */ char name_and_type[MAX_SIZE]; /* an input line */ char *type; /* for parsing */ int value; /* from an input line */ int version10p; /* boolean, old format */ int padding; /* to handle alignment */ int bytes_per_line; /* per scanline of data */ unsigned int ww = 0; /* width */ unsigned int hh = 0; /* height */ int filtype; /* file (0) or pipe (1) */ /* first time initialization */ if (initialized == False) initHexTable(); if ((fstream=open_picfile(filename, &filtype)) == NULL) return BitmapOpenFailed; /* error cleanup and return macro */ #define RETURN(code) { if (data) free (data); \ close_picfile(fstream,filtype); \ return code; } while (fgets(line, MAX_SIZE, fstream)) { if (strlen(line) == MAX_SIZE-1) { RETURN (BitmapFileInvalid); } if (sscanf(line,"#define %s %d",name_and_type,&value) == 2) { if (!(type = rindex(name_and_type, '_'))) type = name_and_type; else type++; if (!strcmp("width", type)) ww = (unsigned int) value; if (!strcmp("height", type)) hh = (unsigned int) value; continue; } if (sscanf(line, "static short %s = {", name_and_type) == 1) version10p = 1; else if (sscanf(line,"static unsigned char %s = {",name_and_type) == 1) version10p = 0; else if (sscanf(line, "static char %s = {", name_and_type) == 1) version10p = 0; else continue; if (!(type = rindex(name_and_type, '_'))) type = name_and_type; else type++; if (strcmp("bits[]", type)) continue; if (!ww || !hh) RETURN (BitmapFileInvalid); if ((ww % 16) && ((ww % 16) < 9) && version10p) padding = 1; else padding = 0; bytes_per_line = (ww+7)/8 + padding; size = bytes_per_line * hh; data = (char *) malloc ((unsigned int) size); if (!data) RETURN (BitmapNoMemory); if (version10p) { char *ptr; int bytes; for (bytes=0, ptr=data; bytes> 8; } } else { char *ptr; int bytes; for (bytes=0, ptr=data; bytes