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BSD 4_3_Tahoe development
[unix-history] / usr / src / new / X / ximpv / impv.c
/*
* Copyright (c) 1985 University of Alberta *
*
* 'impv' impress (i.e. canon) previewer for a SUN workstation.
* impv [-p##] [-s] [job# | -n name]
* where job# is the job number of the troff/dimp processed output suitable
* for the canon imagen printer. This can be found by executing 'ipq'. The
* -p## argument sets the number of pages the user will be allowed to
* backup. The -n name option will cause the users most recent job to
* be displayed.The human interface for this proram leaves something to be
* desired ( skip pages, print page number 'n', etc.).
* The algorithm for crunching glyphs could be improved from the straight
* forward method used.
#ifdef COLOR
* The -s option will cause the output to be sent to the color monitor. Troff
* Macros .CC and .BG set the background and current color. This option is
* intended for slide production.
#endif COLOR
*
* This program requires that a 'file server' (used very loosely)
* exist on the remote host UNIX system. See the code for impvserv.
*
* history:
*
* The program was written in desparation by:
* Steven Sutphen
* University of Alberta
* Department of Computing Science
* Edmonton, Alberta T6G 2H1
* ihnp4!alberta!steve
* November 20, 1982
*
* Revised for Sun Work Station:
* January 1, 1984 Ted Bentley
* Revised for Color SUN displays:
* January 1985 Martin Dubetz
*/
#ifndef lint
static char *rcsid_impv_c = "$Header: impv.c,v 10.7 86/11/19 19:27:39 jg Rel $";
#endif
#ifdef XWIND
#include <X/Xlib.h>
#include <X/Xkeyboard.h>
#include <sys/types.h>
#include <strings.h>
#define min(a,b) ((a) < (b) ? (a) : (b))
#define CHUNKSIZE 2048
#else XWIND
#include <pixrect/pixrect_hs.h>
/* pixrect_hs.h includes sys/types.h */
#include <sys/socket.h>
#endif XWIND
#include <sys/stat.h>
#include <sys/file.h>
#include <stdio.h>
#include <signal.h>
#include <netdb.h>
#include <netinet/in.h>
#include <sgtty.h>
#include "site.h"
#include "imPdefs.h"
#include "imPcodes.h"
#include "impv.h"
char map8_4[256] = { /* map 8 bits to 4bits for pixel compression */
00, 01, 01, 01, 02, 03, 03, 03, 02, 03, 03, 03, 02, 03, 03, 03,
04, 05, 05, 05, 06, 07, 07, 07, 06, 07, 07, 07, 06, 07, 07, 07,
04, 05, 05, 05, 06, 07, 07, 07, 06, 07, 07, 07, 06, 07, 07, 07,
04, 05, 05, 05, 06, 07, 07, 07, 06, 07, 07, 07, 06, 07, 07, 07,
010, 011, 011, 011, 012, 013, 013, 013, 012, 013, 013, 013, 012, 013, 013, 013,
014, 015, 015, 015, 016, 017, 017, 017, 016, 017, 017, 017, 016, 017, 017, 017,
014, 015, 015, 015, 016, 017, 017, 017, 016, 017, 017, 017, 016, 017, 017, 017,
014, 015, 015, 015, 016, 017, 017, 017, 016, 017, 017, 017, 016, 017, 017, 017,
010, 011, 011, 011, 012, 013, 013, 013, 012, 013, 013, 013, 012, 013, 013, 013,
014, 015, 015, 015, 016, 017, 017, 017, 016, 017, 017, 017, 016, 017, 017, 017,
014, 015, 015, 015, 016, 017, 017, 017, 016, 017, 017, 017, 016, 017, 017, 017,
014, 015, 015, 015, 016, 017, 017, 017, 016, 017, 017, 017, 016, 017, 017, 017,
010, 011, 011, 011, 012, 013, 013, 013, 012, 013, 013, 013, 012, 013, 013, 013,
014, 015, 015, 015, 016, 017, 017, 017, 016, 017, 017, 017, 016, 017, 017, 017,
014, 015, 015, 015, 016, 017, 017, 017, 016, 017, 017, 017, 016, 017, 017, 017,
014, 015, 015, 015, 016, 017, 017, 017, 016, 017, 017, 017, 016, 017, 017, 017,
};
#ifdef XWIND
int Select_mask, maxplus1;
int forepix, backpix;
OpaqueFrame win;
Window Win; /* our window */
#define impv_width 15
#define impv_height 15
static short impv_bits[] = {
0x0080, 0x01c0, 0x03e0, 0x06b0,
0x0c98, 0x188c, 0x3086, 0x7fff,
0x3086, 0x188c, 0x0c98, 0x06b0,
0x03e0, 0x01c0, 0x0080};
#else XWIND
struct pixrect *picon, *ptube, *side;
#endif XWIND
int diameter = 1;
short pages = SAVE_PAGES;
char screen_file[32];
unsigned char in_buf[512], *in_bufp;
int ptubew, ptubeh; /* screen window dimensions */
struct sgttyb cbreak; /* tty mode bits */
int s = 0; /* socket or input file descriptor */
int tty; /* tty file descriptor */
int screens; /* screen store file descriptor */
main(argc, argv)
char **argv;
{
struct sockaddr_in sin;
#ifdef XWIND
char *display = NULL;
char *option;
int reverse = 0;
int bwidth = 2;
char *fore_color;
char *back_color;
char *brdr_color;
char *mous_color;
char *geometry = NULL, def[32];
int backmap, bdrmap, mouspix;
Color cdef;
#else XWIND
#ifdef COLOR
unsigned char r[216],b[216],g[216],tmp[6];
register short i,j,k;
int l;
register unsigned char *z;
unsigned char setcolor();
#endif COLOR
extern struct pixrect *pr_open();
#endif XWIND
int pipes[2], id_num = 0, rq;
char string[100], buf[28];
struct hostent *hp;
struct servent *sp;
struct stat stat1;
char *prog = argv[0];
extern get_out();
#ifdef XWIND
if ((option = XGetDefault(argv[0], "ReverseVideo")) &&
strcmp(option, "on") == 0)
reverse = 1;
if (option = XGetDefault(argv[0], "BorderWidth"))
bwidth = atoi(option);
fore_color = XGetDefault(argv[0], "ForeGround");
back_color = XGetDefault(argv[0], "BackGround");
brdr_color = XGetDefault(argv[0], "Border");
mous_color = XGetDefault(argv[0], "Mouse");
#else XWIND
/* set up the keyboard input */
(void)gtty(0, &cbreak);
cbreak.sg_flags &= ~ECHO;
cbreak.sg_flags |= CBREAK;
(void)stty(0, &cbreak);
cbreak.sg_flags &= ~CBREAK;
cbreak.sg_flags |= ECHO;
#endif XWIND
signal(SIGINT, get_out);
signal(SIGQUIT, get_out);
signal(SIGHUP, get_out);
signal(SIGIOT, get_out);
scr_x = MAXx / 2; /* number of dots on a screen page */
wide = (7 + MAXx/2) / 8; /* rounded up to byte for pixrect */
scr_y = MAXy / 2;
scr_d = 1;
/* calculate the screen size in bytes 2::1 compression */
scr_size = (((scr_x + 7) / 8) * scr_y);
for (argv++; --argc; argv++) {
if (**argv == '-'){
switch (argv[0][1]){
#ifndef NOSPOOL
case 'n':
if (pipe(pipes)) {
fprintf(stderr, "pipe mistake\n");
get_out();
}
if (fork() == 0){
/*child*/
(void)close(1);
(void)dup(pipes[1]);
(void)sprintf(string, "echo `ipq | grep %s | awk ' {print $3}'| sort -rn | head -1 `", *++argv);
(void)system(string);
exit(0);
}
/* parent */
while (read(pipes[0], buf, 20) <= 0);
id_num = atoi(buf);
argv++;
argc--;
break;
case 'r':
rq = 1;
break;
#endif NOSPOOL
case 'p':
pages = atoi( &argv[0][2] );
if (pages < 0) pages = 0;
break;
#ifdef COLOR
case 's':
slide = 1;
scr_x = MAXx / 3;
scr_y = MAXy / 3;
scr_d = 8;
scr_size = scr_x * scr_y;
bc.red = 0;
bc.blue = 255;
bc.green = 0;
cc.red = 255;
cc.blue = 255;
cc.green = 255;
break;
#endif COLOR
default:
#ifdef XWIND
if (strcmp(*argv, "-rv") == 0) {
reverse = 1;
break;
} else if (strcmp(*argv, "-fg") == 0 && argc) {
argv++;
argc--;
fore_color = *argv;
break;
} else if (strcmp(*argv, "-bg") == 0 && argc) {
argv++;
argc--;
back_color = *argv;
break;
} else if (strcmp(*argv, "-bd") == 0 && argc) {
argv++;
argc--;
brdr_color = *argv;
break;
} else if (strcmp(*argv, "-ms") == 0 && argc) {
argv++;
argc--;
mous_color = *argv;
break;
}
#endif XWIND
(void)usage();
get_out();
}
}
else {
#ifdef XWIND
if (index(*argv, ':') != NULL)
display = *argv;
else if (argv[0][0] == '=') {
geometry = argv[0];
}
else
#endif XWIND
#ifdef NOSPOOL
if((s = open(*argv, O_RDONLY)) <= 0){
fprintf(stderr,"can't open file\n");
exit(0);
}
#else NOSPOOL
id_num = atoi(*argv);
#endif NOSPOOL
}
}
#ifdef NOSPOOL
/* set up tty for piped input situation*/
if(s == 0) {
s = dup(0);
close(0);
tty = open("/dev/tty",O_RDONLY);
fstat(s, &stat1);
if( (stat1.st_mode>>12) == 02 )
(void)usage();
}
#else NOSPOOL
if(id_num == 0) (void)usage();
#endif NOSPOOL
/* get the file for screen pages */
if (pages) {
strcpy(screen_file, SCREEN_FILE);
mktemp(screen_file);
if ((screens = creat(screen_file, 0666)) <= 0){
fprintf(stderr, "couldn't create: %s\n", screen_file);
get_out();
}
(void)close(screens);
if ((screens = open(screen_file, 2)) <= 0){
fprintf(stderr, "couldn't reopen: %s\n", screen_file);
get_out();
}
}
#ifndef NOSPOOL
/*open up the network to get file from remote host */
sp = getservbyname(P_SERV, "tcp");
hp = gethostbyname(REMOTE_HOST);
if (hp == NULL) {
fprintf(stderr, "impv: nohost - %s\n", REMOTE_HOST);
get_out();
}
bzero((char *)&sin, sizeof (sin));
bcopy(hp->h_addr, (char *)&sin.sin_addr, hp->h_length);
sin.sin_family = hp->h_addrtype;
sin.sin_port = sp->s_port;
s = socket(AF_INET, SOCK_STREAM, 0);
if (s < 0) {
perror("impv: socket");
get_out();
}
(void)setsockopt(s, SOL_SOCKET, SO_KEEPALIVE, 0, 0);
if (connect(s, (char *)&sin, sizeof (sin)) < 0) {
perror("impv: connect");
get_out();
}
/* write the ipd file name to remote_host */
(void)sprintf(string, "P%c%03d", rq ? 'r' : 'n', id_num);
(void)write(s, string, strlen(string));
#endif NOSPOOL
in_bufp = in_buf;
family[0] = font0;
inicodes();
#ifdef XWIND
if (!XOpenDisplay(display)) {
fprintf(stderr, "%s: Can't open display '%s'\n",
prog, XDisplayName(display));
exit(1);
}
if (reverse) {
forepix = WhitePixel;
backpix = BlackPixel;
backmap = BlackPixmap;
bdrmap = WhitePixmap;
mouspix = WhitePixel;
} else {
forepix = BlackPixel;
backpix = WhitePixel;
backmap = WhitePixmap;
bdrmap = BlackPixmap;
mouspix = BlackPixel;
}
if (DisplayCells() > 2) {
if (fore_color && XParseColor(fore_color, &cdef) &&
XGetHardwareColor(&cdef))
forepix = cdef.pixel;
if (back_color && XParseColor(back_color, &cdef) &&
XGetHardwareColor(&cdef)) {
backpix = cdef.pixel;
backmap = XMakeTile(backpix);
}
if (brdr_color && XParseColor(brdr_color, &cdef) &&
XGetHardwareColor(&cdef))
bdrmap = XMakeTile(cdef.pixel);
if (mous_color && XParseColor(mous_color, &cdef) &&
XGetHardwareColor(&cdef))
mouspix = cdef.pixel;
}
win.bdrwidth = bwidth;
win.border = bdrmap;
win.background = backmap;
sprintf(def, "=%dx%d+0+0", DisplayWidth() - (bwidth << 1),
DisplayHeight() - (bwidth << 1));
Win = XCreate (
"Imagen Previewer", argv[0], geometry, def, &win, 200, 200);
XSetResizeHint(Win, 100, 100, 1, 1);
XMapWindow (Win);
ptubew = win.width;
/* crock around crock */
if ((DisplayType() == XDEV_QDSS) && (bwidth < 4))
ptubew &= ~7;
if (ptubew > scr_x)
ptubew = scr_x;
ptubeh = win.height;
if (ptubeh > scr_y)
ptubeh = scr_y;
XSelectInput (Win, KeyPressed|ButtonPressed|ExposeRegion|ExposeCopy);
XDefineCursor(Win,
XCreateCursor(impv_width, impv_height, impv_bits, impv_bits,
7, 7, mouspix, backpix, GXcopy));
XSync(0);
Select_mask = 1 << dpyno();
maxplus1 = 1 + dpyno();
#else XWIND
/* set up the raster pixrect functions */
if( slide ) {
#ifdef COLOR
ptube = pr_open("/dev/cgone0");
tmp[0] = 0;
tmp[1] = 130;
tmp[2] = 180;
tmp[3] = 210;
tmp[4] = 235;
tmp[5] = 255;
l = 0;
for( i = 0; i < 6; i++ )
for( j = 0; j < 6; j++ )
for( k = 0; k < 6; k++ ) {
r[l] = tmp[i];
g[l] = tmp[j];
b[l++] = tmp[k];
}
pr_putcolormap(ptube,0,216,r,g,b);
#endif COLOR
}
else
ptube = pr_open("/dev/fb");
pscreen = mem_create(scr_x, scr_y, scr_d);
#ifdef COLOR
if( slide ) {
backcolor = setcolor(0);
z = (unsigned char *)(mpr_d(pscreen)->md_image);
for (l = scr_size; l--; ) *z++ = backcolor;
}
#endif COLOR
picon = mem_create(46, 53, scr_d);
side = mem_create(ptubew-scr_x, ptubeh, scr_d);
ptubew = ptube->pr_size.x;
ptubeh = ptube->pr_size.y;
#endif XWIND
dofile();
(void)write(s, string, strlen(string));
get_out();
}
#ifdef XWIND
unsigned char rot8[] = {
0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,
0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,
0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,
0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8,
0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4,
0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4,
0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec,
0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc,
0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2,
0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2,
0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea,
0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa,
0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6,
0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6,
0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee,
0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe,
0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1,
0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1,
0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9,
0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9,
0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5,
0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5,
0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed,
0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd,
0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3,
0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3,
0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb,
0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb,
0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7,
0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7,
0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef,
0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff
};
static short current_page = -1;
static short current_x = -1;
#endif XWIND
ppause()
{
short y = 0;
short x;
register int c, i;
register unsigned char *z, *scptr;
#ifdef COLOR
unsigned char setcolor();
#endif COLOR
#ifdef XWIND
short current_y = 0;
int select_mask;
XEvent event;
scptr = pscreen;
for (i = sizeof pscreen; i--; scptr++) *scptr = rot8[*scptr];
winker();
scptr = pscreen;
winker();
#else XWIND
scptr = (unsigned char *)(mpr_d(pscreen)->md_image);
#endif XWIND
if (current_x < 0)
if((current_x = (scr_x - ptubew)/2) < 0) current_x = 0;
x = current_x;
/*write the screen */
while(1) {
#ifdef XWIND
if (page == current_page && x == current_x &&
y < current_y && y + ptubeh > current_y) {
int delta = current_y - y;
XMoveArea(Win, 0, 0, 0, delta, ptubew, ptubeh - delta);
BitsPut(x, y, 0, 0, ptubew, delta);
} else if (page == current_page && x == current_x &&
y > current_y && current_y + ptubeh > y) {
int delta = y - current_y;
XMoveArea(Win, 0, delta, 0, 0, ptubew, ptubeh - delta);
BitsPut(x, y + ptubeh - delta, 0, ptubeh - delta,
ptubew, delta);
} else if (page == current_page && y == current_y &&
x < current_x && x + ptubew > current_x) {
int delta = current_x - x;
XMoveArea(Win, 0, 0, delta, 0, ptubew - delta, ptubeh);
BitsPut(x, y, 0, 0, delta, ptubeh);
} else if (page == current_page && y == current_y &&
x > current_x && current_x + ptubew > x) {
int delta = x - current_x;
XMoveArea(Win, delta, 0, 0, 0, ptubew - delta, ptubeh);
BitsPut(x + ptubew - delta, y, ptubew - delta, 0,
delta, ptubeh);
} else if (y != current_y || x != current_x ||
page != current_page)
BitsPut(x, y, 0, 0, min(scr_x - x, ptubew),
min(scr_y - y, ptubeh));
current_y = y;
current_x = x;
current_page = page;
XFlush();
select_mask = Select_mask;
if (select(maxplus1, &select_mask, NULL, NULL, 0) < 0) exit(1);
if (!(select_mask & Select_mask)) continue;
XPending();
do {
XNextEvent (&event);
switch (event.type) {
case ExposeWindow:
ptubeh = ((XExposeEvent *)(&event))->height;
ptubew = ((XExposeEvent *)(&event))->width;
case ExposeRegion: {
short ex = ((XExposeEvent *)(&event))->x;
short ew = ((XExposeEvent *)(&event))->width;
short ey = ((XExposeEvent *)(&event))->y;
short eh = ((XExposeEvent *)(&event))->height;
BitsPut(x + ex, y + ey, ex, ey,
min(scr_x - (x + ex), ew),
min(scr_y - (y + ey), eh));
continue;
}
case ExposeCopy:
continue;
case ButtonPressed:
{
short detail = ((XButtonPressedEvent *) (&event))->detail;
switch (detail & ValueMask) {
case LeftButton: if (detail & ShiftMask)
c = 'l';
else
c = 'u';
break;
case MiddleButton: if (detail & ShiftMask) {
if (x < scr_x - (x + ptubew))
c = '6';
else
c = '4';
} else {
if (y < scr_y - (y + ptubeh))
c = '3';
else
c = '9';
}
break;
case RightButton: if (detail & ShiftMask)
c = 'r';
else
c = 'd';
break;
}
break;
}
case KeyPressed:
switch ((((XKeyPressedEvent *) (&event))->detail) & ValueMask) {
case KC_E5: c = '-'; break; /* prev screen */
case KC_E6: c = '+'; break; /* next screen */
case KC_CURSOR_UP: c = 'u'; break; /* prev screen */
case KC_CURSOR_DOWN: c = 'd'; break; /* next screen */
case KC_CURSOR_LEFT: c = '<'; break; /* left screen */
case KC_CURSOR_RIGHT: c = '>'; break; /* right screen */
case KC_KEYPAD_0: c = '0'; break; /* R0 */
case KC_KEYPAD_PERIOD: c = '.'; break; /* R. */
case KC_KEYPAD_COMMA: c = ','; break; /* R, */
case KC_KEYPAD_1: c = '1'; break; /* R1 */
case KC_KEYPAD_2: c = '2'; break; /* R2 */
case KC_KEYPAD_3: c = '3'; break; /* R3 */
case KC_KEYPAD_4: c = '4'; break; /* R4 */
case KC_KEYPAD_5: c = '5'; break; /* R5 */
case KC_KEYPAD_6: c = '6'; break; /* R6 */
case KC_KEYPAD_7: c = '7'; break; /* R7 */
case KC_KEYPAD_8: c = '8'; break; /* R8 */
case KC_KEYPAD_9: c = '9'; break; /* R9 */
case KC_KEYPAD_MINUS: c = '-'; break; /* R- */
default:
{
char *string;
int nbytes;
string = XLookupMapping (&event, &nbytes);
if (nbytes == 1)
c = *string;
else
continue;
}
}
}
#else XWIND
/* adjust place of page on screen so it is centered */
/* will clip the edges of imagen300 pages */
pr_rop(ptube, 0, 0, ptubew, ptubeh, PIX_SRC, pscreen, x, y);
if( !slide ) {
pr_rop(ptube, scr_x, 0, 4, ptubeh, PIX_NOT(PIX_SRC),
side, 0, 0);
page_icon(y);
}
/* have a look */
c = getchar();
if( c == 033 ){ /* fixup for SUN 120 keypad */
c = getchar();
if(c == '[') c = getchar();
if(c == '2') c = getchar();
if(c == '2'){
c = getchar() + 1;
(void) getchar();
}
else if(c == '1'){
c = getchar() + 3;
(void) getchar();
}
}
#endif XWIND
switch(c){
case 04:
case 03:
return(-1); /* quit on EOF or ^C */
case '1':
y++;
break;
case '7':
y--;
break;
case 0102:
case '2':
y += 65;
break;
case 0101:
case '8':
y -= 65;
break;
case '3':
y = scr_y - ptubeh -1;
break;
case '9':
y = 0;
break;
case '4':
x = 0;
break;
case '5':
if((x = (scr_x - ptubew)/2) < 0) x = 0;
break;
case '6':
if((x = scr_x - ptubew) < 0) x = 0;
break;
case '<':
x -= 65;
break;
case '>':
x += 65;
break;
case 'l':
x -= ptubew;
break;
case 'r':
x += ptubew;
break;
case 'd':
if (y < scr_y - 1 - ptubeh) {
y += ptubeh;
break;
}
/* falls into */
case '.':
if (pages && page != finish) {
page = (page +1)%pages;
(void)lseek(screens, scr_size * page, 0);
(void)read(screens, scptr, scr_size);
y = 0;
break;
}
/* falls into */
case '+':
case ',':
if (pages && page == finish) {
(void)lseek(screens, scr_size * page, 0);
(void)write(screens, scptr, scr_size);
}
if (pages){
page = finish = (finish +1)%pages;
if(start == finish) start = (start + 1)%pages;
}
/*blank the memory where screen image is built*/
z=scptr;
for (i=scr_size;i--;) *z++ = backcolor;
return(0);
case 'u':
if (y > 0) {
y -= ptubeh;
break;
}
/* falls into */
case '-':
if (pages == 0 || page == start) {
#ifndef XWIND
if (y == 0)
fprintf(stderr, "can not back up more\n");
#endif XWIND
y = 0;
}else{
if(page == finish) {
(void)lseek(screens, scr_size * page, 0);
(void)write(screens, scptr, scr_size);
}
page = (page==0? (pages-1):(page -1))%pages;
(void)lseek(screens, scr_size * page, 0);
(void)read(screens, scptr, scr_size);
if (c == '-')
y = 0;
else
y = scr_y - 1 - ptubeh;
}
break;
default:
break;
}
if (x < 0) x = 0;
else if (x >= scr_x - ptubew) x = scr_x - 1 - ptubew;
if (y < 0) y = 0;
else if (y >= scr_y - ptubeh) y = scr_y - 1 - ptubeh;
#ifdef XWIND
} while (QLength() > 0);
#endif
}
}
/* get a character from the input file */
gc()
{
static int len = 0;
if(macro_on == TRUE) {
/* macro in effect read from its code*/
if(macro_length == macro_count+1) macro_on = FALSE;
return(mp[macro_count++]);
}
else {
/*read from the input file */
if(in_bufp <= &in_buf[len-1]) {
return(*in_bufp++);
}
len = read(s, in_buf, 512);
if(len == 0) {
fprintf(stderr,"No such job\n");
(void)fflush(stderr);
get_out();
}
else if(len < 0) {
perror("impv: read failed");
get_out();
}
in_bufp = in_buf;
winker();
return(*in_bufp++);
}
}
get_out()
{
/*reset keyboard*/
#ifdef XWIND
XDestroyWindow (Win);
#else XWIND
(void)stty(0, &cbreak);
if(pscreen != NULL) pr_close(pscreen);
if(ptube != NULL) pr_close(ptube);
printf("\n");
#endif XWIND
if(big || little)
printf("%d pixels/glyphs/lines would be off the page\n",
big + little);
if (screens && unlink(screen_file) < 0)
printf("%s not removed\n", screen_file);
exit(0);
}
winker()
{
#ifdef XWIND
XPixFill(Win, ptubew / 2 - 8, ptubeh - 50, 16, 16, 0, NULL, GXinvert, 1);
XFlush();
#else XWIND
pr_rop(ptube, 450, 780, 16, 16, PIX_NOT(PIX_SRC), NULL, 0, 0);
#endif XWIND
}
#ifdef XWIND
unsigned char outbuf[CHUNKSIZE];
BitsPut (srcx, srcy, dstx, dsty, width, height)
int srcx, srcy, dstx, dsty, width, height;
{
register unsigned char *data, *ptr;
register int i, per, delta;
int linesize;
linesize = (scr_x + 7) >> 3;
dstx -= (srcx & 7);
width += (srcx & 7);
srcx &= ~7;
data = &pscreen[(srcy*linesize) + (srcx>>3)];
per = BitmapSize(width, 1);
delta = CHUNKSIZE / per;
while (height) {
if (height < delta)
delta = height;
for (ptr = outbuf, i = delta;
--i >= 0;
data += linesize, ptr += per)
bcopy(data, ptr, per);
XBitmapBitsPut(Win, dstx, dsty, width, delta, outbuf,
forepix, backpix, NULL, GXcopy, AllPlanes);
dsty += delta;
height -= delta;
}
}
#endif XWIND
#ifndef XWIND
page_icon(y)
int y;
{
int h, i;
i = 43 * ptubeh / scr_y;
pr_rop(picon, 0 , 0, 46, 53, PIX_NOT(PIX_SRC), NULL, 0, 0);
pr_rop(picon, 2 , 2, 42, 49, PIX_CLR, NULL, 0, 0);
pr_rop(picon, 6 , 4, 34, 45, PIX_NOT(PIX_SRC), NULL, 0, 0);
h = 44 * y / scr_y;
pr_rop(picon, 5, 5+h, 36, i, PIX_NOT(PIX_SRC), picon, 5, 5+h);
pr_rop(ptube, ptubew-46, ptubeh/2, 46, 53, PIX_SRC, picon, 0, 0);
}
#endif
#ifdef COLOR
/*
set color
*/
unsigned char
setcolor(code)
register short int code;
{
register unsigned char color;
register float c1,c2;
c1 = (float)(5 - code) / 255.;
c2 = (float)code / 255.;
color = 36 * ((int)(bc.red * c1 + .5) + (int)(cc.red * c2 + .5))
+ 6 * ((int)(bc.green * c1 + .5) + (int)(cc.green * c2 + .5))
+ ((int)(bc.blue * c1 + .5) + (int)(cc.blue * c2 + .5));
return(color);
}
#endif COLOR
usage()
{
#ifdef NOSPOOL
#ifdef COLOR
printf("usage: impv [-p#] [-s] [file]\n");
#else COLOR
#ifdef XWIND
printf("usage: ximpv [=<geometry>] [-p#] [-rv] [-fg <color>] [-bg <color>] [-bd <color>] [-ms <color>] [host:display] [file]\n");
#else XWIND
printf("usage: impv [-p#] [file]\n");
#endif XWIND
#endif COLOR
(void)fflush(stdout);
exit(0);
#else NOSPOOL
#ifdef COLOR
printf("usage: impv [-p#] [-s] [-r] [idnumber | -n name]\n");
#else COLOR
printf("usage: impv [-p#] [-r] [idnumber | -n name]\n");
#endif COLOR
(void)fflush(stdout);
get_out();
#endif NOSPOOL
}
Continuous source code history from original PDP-7 UNIX to FreeBSD 2, the first fully unencumbered FreeBSD release.