--- /dev/null
+
+/* Copyright (c) 1995, 1996, 1998, 2000 by Arkkra Enterprises */
+/* All rights reserved */
+
+/* functions to support displaying multipage bitmap
+ * (as from Ghostscript -sDEVICE=bit) to AT386 console.
+ */
+
+#include "mupdisp.h"
+
+#if defined(AT386) && ! defined(linux) && ! defined(__DOS__)
+
+#include <sys/kd.h>
+#include <termio.h>
+
+#define BPL (80) /* bytes per line on screen, AT386 mode */
+
+unsigned char *Video_memory;
+int Orig_video_mode; /* to put video back the way it was */
+struct termio Orig_ttyinfo; /* to put keyboard back from raw mode */
+
+static void setup_keyboard P((void));
+\f
+
+/* set up for TERM=AT386. Put video and keyboard in proper mode */
+
+void
+at386_setup()
+
+{
+ register int n; /* for setting signal catching */
+
+
+ /* get current video mode, so we can put it back when we're done */
+ if ((Orig_video_mode = ioctl(1, CONS_GET, 0)) < 0) {
+ fprintf(stderr, "failed to determine current video mode\n");
+ generalcleanup(1);
+ }
+
+ /* need to put keyboard into raw mode, save current state */
+ if (ioctl(0, TCGETA, &Orig_ttyinfo) < 0) {
+ fprintf(stderr, "failed to get tty info\n");
+ generalcleanup(1);
+ }
+
+ /* make sure we always clean up, so user isn't left stuck in raw and/or
+ * graphics mode. */
+ for (n = 1; n < NSIG; n++) {
+ if ( n != SIGKILL && n != SIGCLD) {
+ sigset(n, Conf_info_p->cleanup);
+ }
+ }
+ sigset(SIGWINCH, SIG_IGN);
+
+ /* put keyboard into raw mode */
+ setup_keyboard();
+
+ /* put screen into graphics mode */
+ if (ioctl(1, SW_CG640x350, 0) < 0) {
+ generalcleanup(1);
+ }
+
+ /* get access to video memory */
+ Video_memory = (unsigned char *) ioctl(1, MAPCONS, 0);
+}
+\f
+
+/* draw stuff onto screen. Draw starting at specified line of page */
+
+void
+at386_draw(line, small)
+
+int line; /* draw starting from this raster line of page */
+int small; /* YES if should draw small view of full page */
+
+{
+ register int i;
+ register int j;
+ unsigned char buff[MAX_BYTES_PER_LINE]; /* a row of bits to display */
+ int extra; /* how many unused bits in rightmost byte */
+ int mask; /* to clear out unused bits */
+ unsigned char *v; /* pointer into video memory */
+ long offset; /* into bitmap file */
+ int fd; /* file to read bitmap from */
+
+
+ /* make sure we have a valid page to draw */
+ if (Currpage_p == (struct Pginfo *) 0) {
+ ( *(Conf_info_p->error) ) ("page # out of range");
+ return;
+ }
+
+ /* figure out where in the bitmap file this page is */
+ offset = Currpage_p->seqnum * BYTES_PER_PAGE;
+ fd = gen1file(small);
+ lseek(fd, offset + line * BYTES_PER_LINE, SEEK_SET);
+
+ /* read from file and put into video memory, inverting to
+ * black on white */
+ for (i = 0; i < Conf_info_p->vlines; i++) {
+ read(fd, buff, BYTES_PER_LINE);
+
+ /* if the page width is not on a byte boundary, blank
+ * out the partial byte at the edge */
+ mask = 1;
+ for (mask = 1, extra = BYTES_PER_LINE & 0x7;
+ extra > 0; mask <<= 1, extra--) {
+ buff[BYTES_PER_LINE - 1] |= mask;
+ }
+
+ /* point to row in video memory and transfer bitmap row */
+ v = Video_memory + i * BPL;
+ for (j = 0; j < BYTES_PER_LINE; j++) {
+ v[j] = buff[j] ^ 0xff;
+ }
+ }
+}
+\f
+
+/* AT386 cleanup function.
+ * Put screen back into previous mode. Some day maybe we should save the data
+ * on the original screen and put it back when we're done... */
+
+void
+at386_cleanup(status)
+
+int status;
+
+{
+ /* put video back to normal */
+ ioctl(1, MODESWITCH | Orig_video_mode, 0);
+
+ /* put keyboard back to normal */
+ ioctl(0, TCSETA, &Orig_ttyinfo);
+
+ /* call the non-terminal-type specific cleanup */
+ generalcleanup(status);
+}
+\f
+
+/* read from keyboard and call do_cmd for each key read.
+ * Commands are described in
+ * the comment at the beginning of do_cmd() */
+
+void
+at386_user_interf()
+
+{
+ int c; /* char read from keyboard */
+ int special = 0; /* 1 = got an escape, 2 = got escape followed
+ * by [, 0 = not doing any special processing.
+ * This is to handle special function keys. */
+
+ while ( (c = getchar() ) != EOF) {
+ if (c == 0x1b) {
+ /* got ESC, could be a special function key */
+ special = 1;
+ continue;
+ }
+ else if (special == 1 && c == '[') {
+ /* got ESC-[ */
+ special = 2;
+ continue;
+ }
+ else if (special == 2) {
+ /* map special functions to their equivalent commands */
+ if (c == 'V') {
+ c = 'p'; /* Page Up key ==> previous */
+ }
+ else if (c == 'U') {
+ c = 'n'; /* Page Down key ==> next */
+ }
+ else if (c == 'A') {
+ c = 'b'; /* Up key ==> backwards */
+ }
+ else if (c == 'B') {
+ c = 'f'; /* Down key ==> forwards */
+ }
+ }
+ special = 0;
+ do_cmd(c);
+ }
+}
+\f
+
+/* Error handler.
+ * For now just beep. Maybe eventually pop up an error message */
+
+void
+at386_error(msg)
+
+char *msg;
+
+{
+ ioctl(1, KDMKTONE, (150L << 16) | 3600L);
+}
+\f
+
+/* overlay a raster centered on the window */
+
+void
+at386_raster(bitmap, width, height)
+
+unsigned char *bitmap; /* what to display */
+int width, height; /* of bitmap, width is in bytes */
+
+{
+ int i, j;
+ int x, y; /* upper left corner of where to put bitmap, x in bytes */
+
+
+ /* figure out how to center on screen */
+ x = (BYTES_PER_LINE - width) / 2;
+ y = (Conf_info_p->vlines - height) / 2;
+
+ /* copy bitmap to screen */
+ for (i = 0; i < height; i++) {
+ for (j = 0; j < width; j++) {
+ Video_memory[(y + i) * BPL + (x + j)] =
+ bitmap[ (i * width) + j];
+ }
+ }
+}
+\f
+
+/* put keyboard in raw mode */
+
+static void
+setup_keyboard()
+
+{
+ struct termio ttyinfo;
+
+
+ if (isatty(0) != 1) {
+ fprintf(stderr, "stdin is not a tty\n");
+ generalcleanup(1);
+ }
+
+ if (ioctl(0, TCGETA, &ttyinfo) < 0) {
+ fprintf(stderr, "failed to get tty info\n");
+ generalcleanup(1);
+ }
+
+ /* turn off echo and canonical */
+ ttyinfo.c_lflag &= ~(ICANON | ECHO);
+ ttyinfo.c_cc[VMIN] = 1;
+ ttyinfo.c_cc[VTIME] = 3;
+ if (ioctl(0, TCSETA, &ttyinfo) < 0) {
+ fprintf(stderr, "failed to set keyboard modes, errno %d\n", errno);
+ generalcleanup(1);
+ }
+}
+\f
+
+#else
+
+/* some compilers complain about files that are effectively empty,
+ * so put in something even when entire file is effectively ifdef-ed out */
+static short dummy;
+
+#endif
~mdw / mup / blobdiff