decode more special keys in notcurses-input #134

include/notcurses.h

@@ -396,6 +396,20 @@ ncplane_putsimple_yx(struct ncplane* n, int y, int x, char c){
   return ncplane_putsimple(n, c);
 }
 
+// Replace the cell underneath the cursor with the provided wide char 'w'.
+// Advance the cursor by the character's width as reported by wcwidth(). On
+// success, returns 1. On failure, returns -1.
+API int ncplane_putwc(struct ncplane* n, wchar_t w);
+
+// Call ncplane_putwc() after successfully moving to y, x.
+static inline int
+ncplane_putwc_yx(struct ncplane* n, int y, int x, wchar_t w){
+  if(ncplane_cursor_move_yx(n, y, x)){
+    return -1;
+  }
+  return ncplane_putwc(n, w);
+}
+
 // Replace the cell underneath the cursor with the provided EGC, using the
 // specified 'attr' and 'channels' for styling, and advance the cursor by the
 // width of the cluster (but not past the end of the plane). On success, returns

src/input/input.cpp

@@ -39,6 +39,22 @@ const char* nckeystr(wchar_t spkey){
     case NCKEY_F10:     return "F10";
     case NCKEY_F11:     return "F11";
     case NCKEY_F12:     return "F12";
+    case NCKEY_BACKSPACE: return "backspace";
+    case NCKEY_CENTER:  return "center";
+    case NCKEY_ENTER:   return "enter";
+    case NCKEY_CLS:     return "clear";
+    case NCKEY_DLEFT:   return "down+left";
+    case NCKEY_DRIGHT:  return "down+right";
+    case NCKEY_ULEFT:   return "up+left";
+    case NCKEY_URIGHT:  return "up+right";
+    case NCKEY_BEGIN:   return "begin";
+    case NCKEY_CANCEL:  return "cancel";
+    case NCKEY_CLOSE:   return "close";
+    case NCKEY_COMMAND: return "command";
+    case NCKEY_COPY:    return "copy";
+    case NCKEY_EXIT:    return "exit";
+    case NCKEY_PRINT:   return "print";
+    case NCKEY_REFRESH: return "refresh";
     default:            return "unknown";
   }
 }

src/lib/input.c

@@ -129,8 +129,8 @@ handle_getc(notcurses* nc, int kpress){
     }
     // FIXME ungetc on failure! walk trie backwards or something
   }
-  if(kpress == 0x04){ // ctrl-d, treated as EOF
-    return (wchar_t)-1;
+  if(kpress == 0x7f){ // ASCII del, treated as backspace
+    return NCKEY_BACKSPACE;
   }
   if(kpress < 0x80){
     return kpress;