X-Git-Url: https://jxself.org/git/?p=super-star-trek.git;a=blobdiff_plain;f=src%2Fxio.c;h=9e59c19945c595c9af846ff61a972695a7c98ef3;hp=65098bff143e10b05708bff793cb5f15501034e2;hb=9aef5f5aae5fde0ed2b462945750c7aee59b3c1e;hpb=0bc4964e6bcf3a3ee3b383ee79a97f69ffa48b46

diff --git a/src/xio.c b/src/xio.c
index 65098bf..9e59c19 100644
--- a/src/xio.c
+++ b/src/xio.c
@@ -1,4 +1,26 @@
+/*
+ * Problems with this code:
+ *   1. The text window behaves like it's only a few lines high, 
+ *      scrolling in response to Return when the insertion point 
+ *      is nowhere near the last line.
+ *   2. The attempt to insert text with XawTextReplace() core dumps.
+ *   3. I haven't found a way to write a callback that triggers on Return 
+ *      and yields the line before the return.  The explanation at
+ *      http://www.linuxjunkies.org/programming/GUI/xwindow/x11/text.html
+ *      hints that this may be difficult.
+ *
+ * The functional goal is this:
+ *    1. Button pushes should be able to insert commands at the buffer's
+ *       current insertion point.
+ *    2. When a user finishes a command with Return, a callback should
+ *       receive the line of input typed.
+ * 
+ * All the input passed to the game in back of this will be lines full
+ * of commands generated either by typing into the text buffer directly 
+ * or by button presses that generate text unto the buffer.
+ */
 #include <stdlib.h>
+#include <stdio.h>
 #include <X11/Intrinsic.h>
 #include <X11/StringDefs.h>
 #include <X11/Shell.h>
@@ -6,7 +28,9 @@
 #include <X11/Xaw/Form.h>
 #include <X11/Xaw/Command.h>
 #include <X11/Xaw/AsciiText.h>
-#include "sst.h"
+//#include "sst.h"
+#define OPTION_PLANETS	1
+#define OPTION_PROBE	2
 
 static XtAppContext app_context;
 static Widget toplevel, text, form; 
@@ -18,6 +42,10 @@ static String fallback[] = {
     "*text.resize: ResizeBoth",
     "*text.width: 640",
     "*text.height: 200",
+    "*text.autoFill: True",
+    "*text.scrollVertical: Always",
+    "*text.scrollHorizontal: WhenNeeded",
+    "*text.displayCaret: True",
     "*navigation.fromVert: text",
     "*navigation.borderWidth: 0",
     "*navlabel.label: Navigation:   ",
@@ -52,10 +80,25 @@ static void quit_proc(Widget w, XtPointer client_data, XtPointer call_data)
     exit (0);
 }
 
+static void text_append_to(Widget w, String str)
+/* append text to a specified text widget */
+{
+    XawTextBlock txtblk;
+    XawTextPosition textend = XawTextGetInsertionPoint(w);
+
+    txtblk.ptr = str;
+    txtblk.length = strlen(str);
+    txtblk.firstPos = 0;
+    txtblk.format = FMT8BIT;
+
+    XawTextReplace(w, textend, textend, &txtblk);
+}
+
 static void noargs_proc(Widget w, XtPointer client_data, XtPointer call_data)
 /* use this for commands that take no arguments */
 {
     /* currently a stub */
+    text_append_to(w, XtName(w));
     printf("Button %s pressed\n", XtName(w));
 }
 
@@ -106,7 +149,6 @@ static void instantiate_main(int argc, char **argv)
     text = XtVaCreateManagedWidget("text", 
 				   asciiTextWidgetClass, form,
 				   XtNeditType, XawtextEdit,
-				   XtNdisplayCaret,False,
 				   NULL);
     /* The button panels */
     navigation  = XtVaCreateManagedWidget("navigation", 
@@ -138,7 +180,7 @@ static void instantiate_main(int argc, char **argv)
     misclabel  = XtVaCreateManagedWidget("misclabel", 
 					 labelWidgetClass, misc,
 					 NULL); 
-    for (cp = commands; cp < commands + sizeof(commands)/sizeof(commands[0]); cp++) {
+    for (cp = commands; cp < commands + ARRAY_SIZE(commands); cp++) {
 	cp->widget = XtVaCreateManagedWidget(cp->name, 
 					     commandWidgetClass, 
 					     *cp->parent,