From 7b358424ebad9349421acd533c2fa1cbf6cf3e3e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Frings-F=C3=BCrst?= <debian@jff-webhosting.net>
Date: Wed, 28 Dec 2016 16:52:56 +0100
Subject: Initial import of xtrkcad version 1:4.0.2-2

---
 app/help/mkshg.c | 455 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 455 insertions(+)
 create mode 100644 app/help/mkshg.c

(limited to 'app/help/mkshg.c')

diff --git a/app/help/mkshg.c b/app/help/mkshg.c
new file mode 100644
index 0000000..4c708fa
--- /dev/null
+++ b/app/help/mkshg.c
@@ -0,0 +1,455 @@
+#include <stdio.h>
+#include <string.h>
+#include "readpng.h"
+
+#define PROGNAME "mkshg"
+
+
+int verbose = 0;
+int dmpcolortab = 0;
+int dmpimage = 0;
+
+#define MAXRUNLEN (2)
+
+typedef struct {
+	unsigned char id0, id1, id2;
+	unsigned short x, y, w, h;
+	long hash;
+	char * name;
+	char * context;
+	} hotspot_t;
+
+int samecolor( long color1, long color2 )
+{
+	long c1, c2;
+	int i;
+	for ( i=0; i<3; i++ ) {
+		c1 = (color1&0xFF);
+		c2 = (color2&0xFF);
+		if ( c1 != c2 ) {
+			if ( c1 == 0xFF || c2 == 0xFF ) return FALSE;
+			c1 = (c1+1)&0xFE;
+			c2 = (c2+1)&0xFE;
+			if ( c1 != c2 ) return FALSE;
+		}
+		color1 >>= 8;
+		color2 >>= 8;
+	}
+	return TRUE;
+}
+
+void conv24to8( long * colorTab, char * buff, unsigned long channels, unsigned long width24, unsigned long width8, unsigned long height )
+{
+	long * lastColor, *cp;
+	long color;
+	char * ip;
+	char *op;
+	unsigned long h, w;
+	memset( colorTab, 0, 1024 );
+	lastColor = colorTab;
+	*lastColor++ = 0xC0C0C0;
+	*lastColor++ = 0xFFFFFF;
+	*lastColor++ = 0x808080;
+	*lastColor++ = 0x000000;
+	op = buff;
+	for (h=0; h<height; h++) {
+		ip = buff+(width24*h);
+		op = buff+(width8*h);
+		for (w=0; w<width24; w+=channels,op++ ) {
+			color = ((long)(unsigned char)(ip[0]))<<16;
+			color += ((long)(unsigned char)(ip[1]))<<8;
+			color += ((long)(unsigned char)(ip[2]));
+			ip += channels;
+			for ( cp=colorTab; cp<lastColor; cp++ ) {
+				if ( samecolor( color, *cp ) ) {
+					*op = (char)(cp-colorTab);
+					goto nextPixel;
+				}
+			}
+			if (lastColor < &colorTab[256]) {
+				*op = (char)(lastColor-colorTab);
+				*lastColor++ = color;
+			} else {
+				*op = 0;
+			}
+nextPixel:
+			if ( dmpimage ) {
+				char c;
+				if ( *op < 10 )
+					printf( "%c", '0'+*op );
+				else if ( *op < 10+26 )
+					printf( "%c", *op-10+'a' );
+				else if ( *op < 10+26+26 )
+					printf( "%c", *op-10-26+'A' );
+				else
+					printf( "\%2.2x", *op );
+			}
+		}
+		*op++ = 0;
+		*op++ = 0;
+		if ( dmpimage )
+			printf( "00\n" );
+	}
+if ( dmpcolortab ) {
+	int i;
+	for ( i=0; i<lastColor-colorTab; i++ ) {
+		printf( "C[%3d] %6.6lx\n", i, colorTab[i] );
+	}
+}
+} 
+
+
+void compress_data(
+	unsigned char * ip0,
+	unsigned long isize,
+	unsigned char * op0,
+	unsigned long * osize )
+{
+	unsigned char * ip=ip0, * op=op0;
+	int runlen, norunlen, chunk;
+	norunlen = 0;
+	while ( ip < ip0+isize ) {
+		for ( runlen=0; ip+runlen<ip0+isize && ip[0]==ip[runlen]; runlen++ );
+		if ( runlen > MAXRUNLEN || runlen == 0 ) {
+			while ( norunlen > 0 ) {
+				if ( norunlen > 0x7F )
+					chunk = 0x7F;
+				else
+					chunk = norunlen;
+				*op++ = 0x80|chunk;
+				memcpy( op, ip-norunlen, chunk );
+				op += chunk;
+				norunlen -= chunk;
+			}
+			while ( runlen > MAXRUNLEN ) {
+				if ( runlen > 0x7F )
+					chunk = 0x7F;
+				else
+					chunk = runlen;
+				*op++ = chunk;
+				*op++ = *ip;
+				ip += chunk;
+				runlen -= chunk;
+			}
+		} else {
+			norunlen += runlen;
+			ip += runlen;
+		}
+	}
+	*osize = op-op0;
+}
+
+	
+void writeculong( FILE * shgF, unsigned long value )
+{
+	unsigned short tmp;
+	if ( value > 0x7FFF ) {
+		tmp = (unsigned short)((value&0x7FFF)<<1)+1;
+		fwrite( &tmp, 2, 1, shgF );
+		tmp = (unsigned short)(value>>15);
+		fwrite( &tmp, 2, 1, shgF );
+	} else {
+		tmp = (unsigned short)(value<<1);
+		fwrite( &tmp, 2, 1, shgF );
+	}
+}
+
+void writecushort( FILE * shgF, unsigned short value )
+{
+	unsigned char tmp;
+	if ( value > 0x7F ) {
+		tmp = (unsigned short)((value&0x7F)<<1)+1;
+		fwrite( &tmp, 1, 1, shgF );
+		tmp = (unsigned short)(value>>7);
+		fwrite( &tmp, 1, 1, shgF );
+	} else {
+		tmp = (unsigned short)(value<<1);
+		fwrite( &tmp, 1, 1, shgF );
+	}
+}
+
+void writeShgPic(
+	FILE * shgF,
+	unsigned long width,
+	unsigned long width8,
+	unsigned long height,
+	long colorTab[256],
+	unsigned char * data,
+	unsigned short hotspotcnt,
+	hotspot_t * hotspots )
+{
+	short int pictype, packmethod;
+	unsigned long xdpi, ydpi, colorsused, colorsimportant, compressedsize, hotspotsize, compressoffset, hotspotoffset;
+	unsigned short planes, bitcount;
+	unsigned char * compressed_data;
+	unsigned int start_off, offset_off, off;
+	unsigned short inx;
+	unsigned char one = 1;
+	unsigned long macrosize = 0;
+
+	pictype = 6;
+	packmethod = 1;
+	xdpi = ydpi = 96;
+	planes = 1;
+	bitcount = 8;
+	colorsused = 256;
+	colorsimportant = 256;
+	hotspotsize = (hotspotcnt?7:0);
+	hotspotoffset = 0;
+	compressed_data = (unsigned char *)malloc( width8*height );
+	compress_data( data, width8*height, compressed_data, &compressedsize );
+	for ( inx=0; inx<hotspotcnt; inx++ )
+		hotspotsize += 15+strlen(hotspots[inx].name)+1+strlen(hotspots[inx].context)+1;
+
+	start_off = ftell( shgF );
+	fwrite( &pictype, 1, 1, shgF );
+	fwrite( &packmethod, 1, 1, shgF );
+	writeculong( shgF, xdpi );
+	writeculong( shgF, ydpi );
+	writecushort( shgF, planes );
+	writecushort( shgF, bitcount );
+	writeculong( shgF, width );
+	writeculong( shgF, height );
+	writeculong( shgF, colorsused );
+	writeculong( shgF, colorsimportant );
+	writeculong( shgF, compressedsize );
+	writeculong( shgF, hotspotsize );
+	offset_off = ftell( shgF );
+	compressoffset = offset_off-start_off+8+colorsused*4;
+	fwrite( &compressoffset, 4, 1, shgF );
+	fwrite( &hotspotoffset, 4, 1, shgF );
+	if ( verbose )
+	    printf( "TY=%d, PK=%d, XD=%ld, YD=%ld, PL=%d, BC=%d, W=%ld, H=%ld, CU=%ld, CI=%ld, CS=%ld, HS=%ld, CO=%ld, HO=%ld\n",
+		pictype, packmethod, xdpi, ydpi, planes, bitcount, width, height, colorsused, colorsimportant, compressedsize, hotspotsize, compressoffset, hotspotoffset );
+	fwrite( colorTab, colorsused, 4, shgF );
+	fwrite( compressed_data, compressedsize, 1, shgF );
+	if ( hotspotcnt>0 ) {
+		hotspotoffset = ftell( shgF ) - start_off;
+		fwrite( &one, 1, 1, shgF );
+		fwrite( &hotspotcnt, 2, 1, shgF );
+		fwrite( &macrosize, 4, 1, shgF );
+		for ( inx=0; inx<hotspotcnt; inx++ ) {
+			fwrite( &hotspots[inx].id0, 1, 1, shgF );
+			fwrite( &hotspots[inx].id1, 1, 1, shgF );
+			fwrite( &hotspots[inx].id2, 1, 1, shgF );
+			fwrite( &hotspots[inx].x, 2, 1, shgF );
+			fwrite( &hotspots[inx].y, 2, 1, shgF );
+			fwrite( &hotspots[inx].w, 2, 1, shgF );
+			fwrite( &hotspots[inx].h, 2, 1, shgF );
+			fwrite( &hotspots[inx].hash, 4, 1, shgF );
+		}
+		for ( inx=0; inx<hotspotcnt; inx++ ) {
+			fwrite( hotspots[inx].name, strlen(hotspots[inx].name)+1, 1, shgF );
+			fwrite( hotspots[inx].context, strlen(hotspots[inx].context)+1, 1, shgF );
+		}
+		fseek( shgF, offset_off+4, SEEK_SET );
+		fwrite( &hotspotoffset, 4, 1, shgF );
+	}
+
+	free( compressed_data );
+}
+
+
+signed char hashTable[256]=
+{
+    '\x00', '\xD1', '\xD2', '\xD3', '\xD4', '\xD5', '\xD6', '\xD7',
+    '\xD8', '\xD9', '\xDA', '\xDB', '\xDC', '\xDD', '\xDE', '\xDF',
+    '\xE0', '\xE1', '\xE2', '\xE3', '\xE4', '\xE5', '\xE6', '\xE7',
+    '\xE8', '\xE9', '\xEA', '\xEB', '\xEC', '\xED', '\xEE', '\xEF',
+    '\xF0', '\x0B', '\xF2', '\xF3', '\xF4', '\xF5', '\xF6', '\xF7',
+    '\xF8', '\xF9', '\xFA', '\xFB', '\xFC', '\xFD', '\x0C', '\xFF',
+    '\x0A', '\x01', '\x02', '\x03', '\x04', '\x05', '\x06', '\x07',
+    '\x08', '\x09', '\x0A', '\x0B', '\x0C', '\x0D', '\x0E', '\x0F',
+    '\x10', '\x11', '\x12', '\x13', '\x14', '\x15', '\x16', '\x17',
+    '\x18', '\x19', '\x1A', '\x1B', '\x1C', '\x1D', '\x1E', '\x1F',
+    '\x20', '\x21', '\x22', '\x23', '\x24', '\x25', '\x26', '\x27',
+    '\x28', '\x29', '\x2A', '\x0B', '\x0C', '\x0D', '\x0E', '\x0D',
+    '\x10', '\x11', '\x12', '\x13', '\x14', '\x15', '\x16', '\x17',
+    '\x18', '\x19', '\x1A', '\x1B', '\x1C', '\x1D', '\x1E', '\x1F',
+    '\x20', '\x21', '\x22', '\x23', '\x24', '\x25', '\x26', '\x27',
+    '\x28', '\x29', '\x2A', '\x2B', '\x2C', '\x2D', '\x2E', '\x2F',
+    '\x50', '\x51', '\x52', '\x53', '\x54', '\x55', '\x56', '\x57',
+    '\x58', '\x59', '\x5A', '\x5B', '\x5C', '\x5D', '\x5E', '\x5F',
+    '\x60', '\x61', '\x62', '\x63', '\x64', '\x65', '\x66', '\x67',
+    '\x68', '\x69', '\x6A', '\x6B', '\x6C', '\x6D', '\x6E', '\x6F',
+    '\x70', '\x71', '\x72', '\x73', '\x74', '\x75', '\x76', '\x77',
+    '\x78', '\x79', '\x7A', '\x7B', '\x7C', '\x7D', '\x7E', '\x7F',
+    '\x80', '\x81', '\x82', '\x83', '\x0B', '\x85', '\x86', '\x87',
+    '\x88', '\x89', '\x8A', '\x8B', '\x8C', '\x8D', '\x8E', '\x8F',
+    '\x90', '\x91', '\x92', '\x93', '\x94', '\x95', '\x96', '\x97',
+    '\x98', '\x99', '\x9A', '\x9B', '\x9C', '\x9D', '\x9E', '\x9F',
+    '\xA0', '\xA1', '\xA2', '\xA3', '\xA4', '\xA5', '\xA6', '\xA7',
+    '\xA8', '\xA9', '\xAA', '\xAB', '\xAC', '\xAD', '\xAE', '\xAF',
+    '\xB0', '\xB1', '\xB2', '\xB3', '\xB4', '\xB5', '\xB6', '\xB7',
+    '\xB8', '\xB9', '\xBA', '\xBB', '\xBC', '\xBD', '\xBE', '\xBF',
+    '\xC0', '\xC1', '\xC2', '\xC3', '\xC4', '\xC5', '\xC6', '\xC7',
+    '\xC8', '\xC9', '\xCA', '\xCB', '\xCC', '\xCD', '\xCE', '\xCF'
+};
+
+void readHotspots(
+	FILE * inF,
+	unsigned short * hotspotcnt,
+	hotspot_t * * hotspotptr )
+{
+	hotspot_t hs, *hs_p;
+	int x, y;
+	unsigned short hs_c;
+	char type[80];
+	char name[80];
+	char line[256], *context;
+	int off;
+	int rc;
+
+	hs_c = 0;
+	hs_p = NULL;
+	while ( fgets( line, sizeof line, inF ) != NULL ) {
+		rc=sscanf( line, "%s %hd %hd %hd %hd %n", type, &x, &y, &hs.w, &hs.h, &off );
+		if ( hs_c > 0 ) {
+			if ( x < 0 )
+			    x = ((int)hs_p[hs_c-1].x) - x;
+			if ( y < 0 )
+			    y = ((int)hs_p[hs_c-1].y) - y;
+		}
+		hs.x = (unsigned short)x;
+		hs.y = (unsigned short)y;
+		if ( rc != 5 )
+			fprintf( stderr, "Invalid hotspot syntax: %s", line );
+		if ( strcasecmp( type, "jump" ) == 0 ) {
+			hs.id0 = 0xe7;
+			hs.id1 = 0x04;
+			hs.id2 = 0x00;
+		} else if ( strcasecmp( type, "popup" ) == 0 ) {
+			hs.id0 = 0xe6;
+			hs.id1 = 0x04;
+			hs.id2 = 0x00;
+		} else if ( strcasecmp( type, "ignore" ) == 0 ) {
+			continue;
+		} else {
+			fprintf( stderr, "Invalid hotspot type: %s", line );
+			continue;
+		}
+		sprintf( name, "Hotspot %d", hs_c+1 );
+		hs.name = strdup( name );
+		context = line+off;
+		off = strlen( context );
+		if ( context[off-1] == '\n' ) context[off-1] = 0;
+		hs.context = strdup( context );
+		for (hs.hash=0; *context; context++ )
+			hs.hash = (hs.hash*43)+hashTable[(unsigned char)*context];
+		hs_c++;
+		hs_p = (hotspot_t*)realloc( hs_p, hs_c * sizeof hs );
+		hs_p[hs_c-1] = hs;
+	}
+	*hotspotcnt = hs_c;
+	*hotspotptr = hs_p;
+}
+
+
+void PngToShg(
+	char * pngFile,
+	char * shgFile )
+{
+	FILE * pngF, * shgF;
+	int rc;
+	unsigned long image_width, image_height, image_rowbytes, width8, h;
+	int image_channels;
+	unsigned char * image_data;
+	double display_exponent = 1.0;
+
+	long size, fileSize, maxRecSize;
+	long colorTab[256];
+
+	short int magic;
+	short int piccnt;
+	long int picoff[1];
+
+	unsigned short hotspotcnt;
+	hotspot_t * hotspotptr;
+
+	pngF = fopen( pngFile, "r" );
+	if ( pngF == NULL ) {
+		perror( pngFile );
+		return;
+	}
+	shgF = fopen( shgFile, "w" );
+	if ( shgF == NULL ) {
+		perror( shgFile );
+		return;
+	}
+        if ((rc = readpng_init(pngF, &image_width, &image_height)) != 0) {
+            switch (rc) {
+                case 1:
+                    fprintf(stderr, PROGNAME
+                      ":  [%s] is not a PNG file: incorrect signature\n",
+                      pngFile);
+                    break;
+                case 2:
+                    fprintf(stderr, PROGNAME
+                      ":  [%s] has bad IHDR (libpng longjmp)\n",
+                      pngFile);
+                    break;
+                case 4:
+                    fprintf(stderr, PROGNAME ":  insufficient memory\n");
+                    break;
+                default:
+                    fprintf(stderr, PROGNAME
+                      ":  unknown readpng_init() error\n");
+                    break;
+            }
+            return;
+	}
+
+	image_data = readpng_get_image(display_exponent, &image_channels, &image_rowbytes);
+	width8 = ((image_width+3)/4)*4;
+	size = width8*image_height;
+	fileSize = (size+1024)/2 + 70;
+        maxRecSize = (size+1024)/2 + 34;
+
+	conv24to8( colorTab, image_data, image_channels, image_width*image_channels, width8, image_height );
+
+	magic = 0x706c;
+	piccnt = 1;
+	picoff[0] = 8;
+	fwrite( &magic, 2, 1, shgF );
+	fwrite( &piccnt, 2, 1, shgF );
+	fwrite( picoff, 4, piccnt, shgF );
+	readHotspots( stdin, &hotspotcnt, &hotspotptr );
+	writeShgPic( shgF, image_width, width8, image_height, colorTab, image_data, hotspotcnt, hotspotptr );
+	if ( hotspotptr )
+		free( hotspotptr );
+
+	readpng_cleanup(FALSE);
+	fclose( pngF );
+	fclose( shgF );
+	free( image_data );
+
+}
+
+int main( argc, argv )
+int argc; char * argv[];
+{
+    while ( argc > 1 && argv[1][0] == '-' ) {
+	switch ( argv[1][1] ) {
+	case 'v':
+		verbose++;
+		break;
+	case 'c':
+		dmpcolortab++;
+		break;
+	case 'i':
+		dmpimage++;
+		break;
+	default:
+		fprintf( stderr, "Unknown option: %s\n", argv[1] );
+		exit(1);
+	}
+	argv++;
+	argc--;
+    }
+    if ( argc != 3 ) {
+	fprintf( stderr, "Usage: mkshg [-v] [-c] infile.png outfile.shg\n" );
+	exit(1);
+    }
+
+    PngToShg( argv[1], argv[2] );
+}
-- 
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