Add packages for Christoph Hetz's input fields

scheme/ncurses-packages.scm

@@ -383,3 +383,56 @@
   (files ncurses
 	 ncurses-constants
 	 input-buffer))
+
+(define-interface input-fields-interface
+  (export make-input-field
+	  install-input-field
+	  make&install-input-field
+
+	  input-field-refresh
+	  input-field-reset
+	  input-field-clear
+	  input-field-move
+	  input-field-resize
+	  input-field-toggle-x-scroll
+	  input-field-toggle-y-scroll
+
+	  input-field?
+	  input-field-default-text
+	  input-field-text
+	  input-field-x-location
+	  input-field-y-location
+	  input-field-x-size
+	  input-field-y-size
+	  input-field-x-scroll
+	  input-field-y-scroll
+	  input-field-line
+	  input-field-column
+	  input-field-insert
+
+	  cursor-over-input-field?
+	  send-input-field
+
+	  standard-behavior
+	  standard-behavior-pro))
+
+(define-structure input-fields input-fields-interface
+  (open scheme
+	define-record-types
+	ascii
+	ncurses
+	(with-prefix (subset util (filter)) util-)
+	weak)
+  (files input-fields))
+
+;;; demo and test code for the new input-fields
+
+(define-interface input-fields-demo-interface
+  (export demo))
+
+(define-structure input-fields-demo input-fields-demo-interface
+  (open scheme
+	ascii
+	input-fields
+	ncurses)
+  (files demo))