Stable PTY terminal mode, ready for testing

docs/quickstart.md

@@ -1,56 +1,48 @@
 # Tek4010 Quick Start
 
+This is a Tektronix 4010 graphics terminal emulator.
+It is not a full VT100/xterm terminal.
+
 Basic usage:
 
-    tek4010 [options] command [command options]
-
-The command is required, for example: cat, head,
-telnet, or rsh.
+    tek4010 [options]
 
 ---
 
 ## Examples
 
-To use the included examples and demos, go to the
-Tek4010 directory first
+To use the included examples and demos, start tek4010 with the command
+
+    tek4010
+  
+In the tek4010 window, change to the Tek4010 directory:
+
+    cd Tek4010
 
 Display a plot file:
 
-    tek4010 -noexit cat test.plt
-
-ARDS example:
-
-    tek4010 -noexit -ARDS cat ardsfiles/trek.pic
-
-Text output:
-
-    tek4010 -noexit head -n 32 src/tek4010.c
+    cat test.plt
 
 Animation:
 
-    tek4010 cat animation.plt
+    cat animation.plt
 
 Demo script:
 
-    tek4010 demos/demo.sh
-
----
-
-## Important option
-
--noexit
-
-Keeps the window open after the command finishes.
+    sh demos/demo.sh
 
 ---
 
 ## Options
 
+By default, the screen clears automatically when the bottom is reached.
+Use -noAutoClear to disable this.
+
 | Option   | Description                              |
 |----------|------------------------------------------|
-| -noexit  | Keep window open after command           |
 | -fast    | Fast rendering without fading            |
 | -full    | Full screen mode (Ctrl-Q to close)       |
+| -half    | Use half of the screen width.            |
 | -b9600…  | Emulate terminal baud rates              |
 
 ---

dodekagon.plt

@@ -1 +0,0 @@
-,f:^1u9N

src/main.c

@@ -107,6 +107,9 @@ void check_graphics_response(long lag)
 
         long now = tube_mSeconds();
         
+		if (brightCounter <= 0)
+			return;
+        
         // ignore startup phase (first 1000 ms)
         if (now < STARTUP_IGNORE_MSEC)
                 return;
@@ -439,8 +442,11 @@ int main (int argc, char *argv[])
         }
 
         gtk_window_set_title(GTK_WINDOW(window), windowName);
-
+        
+        gtk_widget_set_can_focus(window, TRUE);
         gtk_widget_show_all(window);
+		gtk_window_present(GTK_WINDOW(window));
+		gtk_widget_grab_focus(window);
 
         gtk_main();
 

src/tube.c

@@ -84,7 +84,7 @@ struct keyCode {
 
 struct keyCode keyTable[MAXKEYCODES];
 
-int argNoexit = 0;              // options
+int argNoexit = 1;              // options
 int argRaw = 0;
 int argBaud = 19200;
 int argTab1 = 0;
@@ -92,7 +92,7 @@ int argFull = 0;
 int argFullV = 0;
 int argARDS = 0;
 int argAPL = 0;
-int argAutoClear = 0;
+int argAutoClear = 1;
 int argKeepSize = 0;
 int argHideCursor = 0;
 int argWait = 0;
@@ -119,6 +119,7 @@ int specialPlotMode = 0;
 int defocussed = 0;
 int intensity = 100;
 int aplMode = 0;
+pid_t childPid = -1;
 int argPty = 0;
 
 
@@ -314,6 +315,8 @@ void tube_init(int argc, char* argv[])
         size_t bufsize = 127;
         int firstArg = 1;
 		int ptyMaster = -1;
+		argAutoClear = 1;
+		argNoexit = 1;
         printf("tek4010 version 2.0\n");
         windowName = "Tektronix 4010/4014 emulator";
 		if (argc > 19) {
@@ -338,6 +341,8 @@ void tube_init(int argc, char* argv[])
                         argRaw = 1;
                 else if (strcmp(argv[firstArg],"-noexit") == 0)
                         argNoexit = 1;
+                else if (strcmp(argv[firstArg],"-exit") == 0)
+                        argNoexit = 0;
                 else if (strcmp(argv[firstArg],"-b100000") == 0)
                         argBaud = 100000;
                 else if (strcmp(argv[firstArg],"-b38400") == 0)
@@ -364,6 +369,8 @@ void tube_init(int argc, char* argv[])
                         argFullV = 1;
                 else if (strcmp(argv[firstArg],"-autoClear") == 0)
                         argAutoClear = 1;
+                else if (strcmp(argv[firstArg],"-noAutoClear") == 0)
+                        argAutoClear = 0;
                 else if (strcmp(argv[firstArg],"-keepsize") == 0)
                         argKeepSize = 1;
                 else if (strcmp(argv[firstArg],"-hidecursor") == 0)
@@ -429,13 +436,14 @@ void tube_init(int argc, char* argv[])
 						printf("Cannot fork pseudo terminal\n");
 						exit(1);
 				}
-else if (pid == 0) {
-        setenv("TERM", "vt100", 1);
-        setenv("PS1", "Tek4010$ ", 1);
-        execl("/bin/sh", "sh", "-i", (char *) NULL);
-        _exit(127);
-}
-
+				else if (pid == 0) {
+					setenv("TERM", "vt100", 1);
+					setenv("PS1", "tek4010$ ", 1);
+					execl("/bin/sh", "sh", "-i", (char *) NULL);
+					_exit(127);
+				}
+				
+				childPid = pid;
                 getDataPipe[0] = ptyMaster;
                 putKeysPipe[1] = dup(ptyMaster);
                 if (putKeysPipe[1] == -1) {
@@ -516,6 +524,9 @@ else if (pid == 0) {
                 }
 
                 // parent process
+                
+                childPid = pid;
+                
                 free(str);
 
                 close(getDataPipe[1]); // not used
@@ -566,31 +577,34 @@ int tube_on_timer_event()
 
         // is child process still running?
 
-        int status;
-        if (argWait && (tube_isInput() == 0) && (waitpid(-1, &status, WNOHANG))) {
-                if (firstWait == 0)
-                        firstWait = tube_mSeconds();
-                else {
-                        if ((int)((tube_mSeconds() - firstWait) / 1000) > argWait) {
-                                tube_quit();
-                                gtk_main_quit();
-                                printf("Process has been terminated after %d seconds\n", argWait);
-                                exit(0);
-                        }
-                }
-        }
-        else if ((!argNoexit) && (tube_isInput() == 0) && (waitpid(-1, &status, WNOHANG))) {
-                long t = tube_mSeconds();
-                // printf("Execution time: %0.3f sec\n", (double)t/1000.0);
-                // if (t > 0) {
-                //         printf("Average screen refresh rate: %0.1f Hz\n",(double)(1000.0*refreshCount)/t);
-                //         printf("Average character rate: %0.0f baud\n",(double)(8000.0*charCount)/t);
-                // }
-                tube_quit();
-                gtk_main_quit();
-                printf("Process has been terminated\n");
-                exit(0);
-        }
+		int status;
+		int childExited = 0;
+
+		if (childPid > 0) {
+				if (waitpid(childPid, &status, WNOHANG) == childPid)
+						childExited = 1;
+		}
+
+		if (childExited) {
+				if (argPty || !argNoexit) {
+						tube_quit();
+						gtk_main_quit();
+						printf("Process has been terminated\n");
+						exit(0);
+				}
+
+				if (argWait) {
+						if (firstWait == 0)
+								firstWait = tube_mSeconds();
+						else if ((int)((tube_mSeconds() - firstWait) / 1000) > argWait) {
+								tube_quit();
+								gtk_main_quit();
+								printf("Process has been terminated after %d seconds\n", argWait);
+								exit(0);
+						}
+				}
+		}
+
         if (brightCounter > 0)
         brightCounter--;
 

src/tube.h

@@ -47,6 +47,7 @@ extern int aplMode;
 
 extern int plotPointMode;
 extern int writeThroughMode;
+extern pid_t childPid;
 extern int argPty;
 
 extern int tube_x0, tube_x2, tube_y0, tube_y2;

tektests/circles.c

@@ -48,7 +48,7 @@ void endDraw()
     fflush(stdout);
 }
 
-int drawCircle(int x,int y,int r)
+void drawCircle(int x,int y,int r)
 {
 	int i;
 	double arg;
@@ -63,12 +63,12 @@ int drawCircle(int x,int y,int r)
 int main (int argc, char *argv[])
 {
 	drawCircle(512, 340, 200);
-        drawCircle(612, 340, 100);
-        drawCircle(412, 340, 100);
-        drawCircle(512, 240, 100);
+  drawCircle(612, 340, 100);
+  drawCircle(412, 340, 100);
+  drawCircle(512, 240, 100);
 	drawCircle(512, 440, 100);
 	startDraw(212,340); draw(812,340); endDraw();
 	startDraw(512,040); draw(512,640); endDraw();
 
-	startDraw(1,1); endDraw(); // move the cursor out of the way
+	//startDraw(1,1); endDraw(); // move the cursor out of the way
 }

tektests/circles.plt

@@ -1 +0,0 @@
-*t6HHzG+`GfGmFsEyDC,eAk@q5^w\}Y-cWiTnRtOyLH.dEiAn4^sZxV|Q/aMeHjDn3_rZuUyP|K0`Ec@f2ZhUkOmIpCr1]tWuQwKxEy0_zY{RLF|@{/ZTNzGyAx.[wUuOtIrCp-]mWkQhKfFc@`,[/|UyPuKrFnAj+\eXaS.|OxJsFnBi*_d[-XyTtQnNiLcI,}GwDqBk@e)_+]y\s[mZfY`Y*zYtXnYhYbY){Zu[o\i]c_(}*@wBqDkGeI'LzNtQoTiXd[&_z+BuFpJlOgScX%~\z,AvFsKoPlUh[e-@bF`K$}Q{Wx]v.CtIsOqUp[o/AnGmNTZl0@mFLRnYo_p1EqKsQtWv]x2C{I}O%`UbZe3@hElKoPsUvZz_~4D&cHgMlQpVuZz^5A'dEiHoLtOzRT(eWkYq\w^}6@)cAiCoDuE{F*bGhGnGtH*t6HHzG+`GfFlDrCx@~5^,d[iXnTsQxL|H-aCd4^hYkTnNpHsBt3\vVwPJxDw2^XvRtLsFp@n1ZkThOdJaE,|@x0\sWnTiPdM+~JxHrElDfB`A*zAt@nAhAbB)|DvEpHjJdM(PzTuWp\l1@gEdJ`O'}TzZx2@uFtLrRqX^p3DqJPrVt\u4BxHzN}T(`Yd^g5ClHpLuQzTX)d[j^p6@vC|D*bFhGnGtH*t0@@z/_+`_f^l\r[xX~V,dSiPnLsIxD|@-a.[dVhQkLnFp@s-ZtTvNwHBx,\wVPvJtDs+^pXnRkLhGdBa*],|XxTsOnLiHdE+~Bx@r)]l\fZ`Y*zYtXnYhYbZ)|\v]p*@jBdE(HzLuOpTlXg]d+B`G'}LzRxXu^t,DrJqPVp\q-BHrNtTuZx.@zF}L(`QdVg[l/@pDuIzLP)dSjVpXv[|\*b^h_n_t0@'p3DDvC|C(bBh@n2_t\zZ)`WeTjPoMtHxD}1_*`ZdUgPjJlDo0^pXrRsLFt@s/ZTrNpHoBl.\jVgPdK`F)}Ax-\tXoSjPeL`I(zFtDnAh@b,^'|]v]p\j]d]&~^x-@rAlDfF`I%{LvPqSlXh\c.A`F$|KyPvVt\q/BpHnNmTZl0@mFLnRpXq^t1DvJyP|U%`Zc_h2DlHqMvP{T&`WfZl\r_x3@~B'dCjCpD-x3DD~C.dCjBp@v2_|\/bZhWmTrPwM|H0`De1_hZlUoPrJtDw0^xXzR{LF|@{/ZTzNxHwBt.\rVoPlKhFeA`-\/|XwSrPmLhIbF.|DvAp@j,^d]-~]x\r]l]f^`-@,zAtDnFhIcL+~PyStXp\k.AhFdKaP*~V|\y/BxHvNuTZt0@uFLvRxXy^|1D~J+aPdUhZk_p2DtHyM~P,cThWnZt\z_-`3@fBlCrCxD*t&Tt9L!`0@4@ a A

tektests/dodecagon.c

@@ -0,0 +1,29 @@
+/*  dodecagon.c		  */
+/*  rricharz 2019   */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include "tekio.h"
+
+int main (int argc, char *argv[])
+{
+        int angle, angle1;
+        double rad = 3.14159265 / 180;
+        int xcenter = MAXX / 2;
+        int ycenter = MAXY / 2;
+        int radius = 9 * MAXY / 20;
+ 
+        clearScreen();
+        for (angle = 0; angle < 360; angle += 30) {
+                for (angle1 = angle + 30; angle1 < 360; angle1 += 30) {
+                        drawVector((int)(xcenter + radius * cos(rad * angle)),
+                                        (int)(ycenter + radius * sin (rad * angle)),
+                        		(int)(xcenter + radius * cos (rad * angle1)),
+                                        (int)(ycenter + radius * sin (rad * angle1)));
+                }
+        }
+	      moveAlpha(34,0);
+        exit(0);
+}

tektests/incremental.plt

@@ -1 +0,0 @@
-$l0@PEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII

tektests/makefile

@@ -1,8 +1,11 @@
 CC = gcc
 LDFLAGS = -lm
 
-all: incremental circles
+all: incremental circles dodecagon
 
 incremental: incremental.c
 
 circles: circles.c
+	
+dodecagon: tekio.h tekio.c dodecagon.c
+	cc -o dodecagon dodecagon.c tekio.c -lm

tektests/tekio.c

@@ -0,0 +1,170 @@
+/*  tecio.c 2.11 BSD Tektronix graphics 	      */
+/*  io functions for Tektronix 4010             */
+/*  cc 2019 rricharz                            */
+/*  If you want to use this, you need to	      */
+/*  be in tek4010 terminal.                    	*/
+/*  See https://github.com/rricharz/Tek4010     */
+
+#include <stdio.h>
+#include <math.h>
+#include <string.h>
+#include "tekio.h"
+
+static int xs,ys;
+
+void startDraw(int x1, int y1)
+{
+    if (x1 < 0) x1 = 0;
+    if (x1 >= MAXX) x1 = MAXX -1;
+    if (y1 < 0) y1 = 0;
+    if (y1 >= MAXY) y1 = MAXY - 1;
+    putchar(29);
+    putchar((y1 >> 5) + 32);
+    putchar((y1 & 31) + 96);
+    putchar((x1 >> 5) + 32);
+    putchar((x1 & 31) + 64);
+    xs = x1;
+    ys = y1;
+}
+
+void draw(int x2, int y2)
+{
+    int hxchange, lychange;
+
+    if (x2 < 0) x2 = 0;
+    if (x2 >= MAXX) x2 = MAXX -1;
+    if (y2 < 0) y2 = 0;
+    if (y2 >= MAXY) y2 = MAXY - 1;
+
+    if ((y2 >> 5) != (ys >> 5))        /* if high y has changed */
+	putchar((y2 >> 5) + 32);
+    hxchange = (x2 >> 5) != (xs >> 5);
+    lychange = (y2 & 31) != (ys & 31);
+    if (hxchange || lychange) putchar((y2 & 31) + 96);
+    if (hxchange)                                     /* if high order x has changed */
+    	putchar((x2 >> 5) + 32);
+    putchar((x2 & 31) + 64);
+    xs = x2;
+    ys = y2;
+}
+
+void endDraw()
+{
+    putchar(31);
+    fflush(stdout);
+}
+
+void moveTo(int x1, int y1)
+{
+    startDraw(x1,y1);
+    endDraw();
+}
+
+void moveAlpha(int line, int column)
+{
+    int vDotsPerChar;
+    double hDotsPerChar;
+    if (line < 1) line = 1;
+    if (line > MAXLINES) line = MAXLINES;
+    if (column < 1) column = 1;
+    if (column > MAXCOLUMNS) column = MAXCOLUMNS;
+    vDotsPerChar = MAXY / MAXLINES;
+    hDotsPerChar = (double)(MAXX)/(double)(MAXCOLUMNS);
+    moveTo((int)((double)(column - 1) * hDotsPerChar), MAXY - line * vDotsPerChar);
+}
+
+void drawVector(int x1, int y1, int x2, int y2)
+{
+    startDraw(x1,y1);
+    if (x2 < 0) x2 = 0;
+    if (x2 >= MAXX) x2 = MAXX -1;
+    if (y2 < 0) y2 = 0;
+    if (y2 >= MAXY) y2 = MAXY - 1;
+    draw(x2,y2);
+    endDraw();
+}
+
+void clearScreen()
+{
+    putchar(27);
+    putchar(12);
+}
+
+
+void startWriteThrough()
+{
+    putchar(27);
+    putchar('p');
+    fflush(stdout);	
+}
+
+void endWriteThrough()
+{
+    putchar(27);
+    putchar('`');
+    fflush(stdout);
+}
+
+void drawRectangle(int x1, int y1, int x2, int y2)
+{
+    startDraw(x1,y1);
+    draw(x2,y1);
+    draw(x2,y2);
+    draw(x1,y2);
+    draw(x1,y1);
+    endDraw();
+}
+
+void drawCircle(int x, int y, int r)
+{
+	int i;
+	double arg;
+    	startDraw(x + r, y);
+    	for (i = 0; i <= r; i++) {
+        	arg = (double)(i) * PI2 / (double) r;
+		      draw(x + (int)((double)r * cos(arg)), y + (int)((double)r * sin(arg)));
+    	}
+    	endDraw();
+}
+
+void drawJustifiedText(char *s, int line, int justify)
+/* justify 0=left, 1=center; 2=right */
+{
+	int length;
+	length = strlen(s);
+	switch (justify) {
+		case 1: moveAlpha(line, 1); break;
+                case 2: moveAlpha(line, (MAXCOLUMNS - length) / 2); break;
+                case 3: moveAlpha(line, MAXCOLUMNS - length + 1); break;
+	}
+	printf("%s",s);
+}
+
+int fix(double r)
+/* round double and convert to int */
+{
+ 	if (r >= 0) return (int)(r + 0.5);
+	else return (int)(r - 0.5);
+}
+
+void setCharacterSize(int size)
+{
+	if ((size >= 1) && (size <= 4)) {
+		putchar(27);
+		putchar('7' + size);
+	}
+	else
+		printf("setCharacterSize: Illegal size %d\n", size);
+}
+
+void setLineMode(int type)
+{
+	if ((type >= SOLID) && (type <= LONGDASH)) {
+		putchar(27);
+		putchar(95 + type);
+	}
+	else
+		printf("SetLineMode: illegal type %d\n", type);
+}
+
+

tektests/tekio.h

@@ -0,0 +1,77 @@
+/*  tecio.h 2.11 BSD Tektronix graphics 	      */
+/*  io functions for Tektronix 4010             */
+/*  cc 2019 rricharz                            */
+/*  If you want to use this, you need to	      */
+/*  be in tek4010                             	*/
+/*  See https://github.com/rricharz/Tek4010     */
+
+#define MAXX 1023	/* Tektronix graphics screen size */
+#define MAXY  780
+
+#define MAXCOLUMNS  74  /* Tektronix alpha screen size */
+#define MAXLINES    35 
+
+/*                                              */
+/*  clear screen with                           */
+/*     clearScreen()                            */                           
+/*                                              */
+/*  draw individual vectors with                */
+/*     drawVector(x1,y1,x2,y2)                  */
+/*                                              */
+/*  draw a string using graphics coordinates    */
+/*     moveTo(x1,y1)                            */
+/*     printf(.....)                            */
+/*                                              */
+/*  draw a string using alpha coordinates       */
+/*     moveAlpha(line,column)                   */
+/*     printf(.....)                            */
+/*                                              */ 
+/*  fast draw multiple joint vectors            */
+/*     startDraw(x1,y1)                         */
+/*     draw(x2,y2)                              */
+/*     draw(x3,y3)                              */
+/*     .............                            */
+/*     endDraw()                                */
+/*                                              */
+/*   drawRectange(x1,y1.x2.y2)                  */
+/*                                              */
+/*  drawCircle(x,y,r)                           */
+/*                                              */
+/* drawJustifiedText(s, line, justify)          */
+/* justify 0=left, 1=center; 2=right            */
+/*                                              */
+/* writethrough mode for short animations       */
+/*     startWriteThrough()                      */
+/*     endWriteThrough()                        */
+/*                                              */
+/* setCharacterSize(size)                       */
+/*     select character size 1..4               */
+/*                                              */
+/* void setLineMode(type)                       */
+/*     set line type				*/
+/*   SOLID,DOTTED,DOTDASH,SHORTDASH,LONGDASH    */
+
+#define PI  3.14159265
+#define PI2 6.28318531
+
+#define SOLID		1
+#define DOTTED  	2
+#define DOTDASH 	3
+#define SHORTDASH	4
+#define LONGDASH	5 
+
+extern void drawVector(int x1, int y1, int x2, int y2);
+extern void moveTo(int lx, int ly);
+extern void moveAlpha(int line, int column);
+extern void clearScreen(void);
+extern void startDraw(int lx, int ly);
+extern void draw(int x2, int y2);
+extern void endDraw(void);
+extern void startWriteThrough();
+extern void endWriteThrough();
+extern void drawRectangle(int x1, int y1, int x2, int y2);
+extern void drawCircle(int x, int y, int r);
+extern void drawJustifiedText(char *s, int line, int justify);
+extern int fix(double r);
+extern void setCharacterSize(int size);
+extern void setLineMode(int type);

test.plt

@@ -1 +1 @@
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