--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lisp/gtk-widget-accessors.el	Mon Aug 13 11:44:37 2007 +0200
@@ -0,0 +1,258 @@
+(require 'gtk-ffi)
+
+(defconst GTK_TYPE_INVALID 0)
+(defconst GTK_TYPE_NONE 1)
+(defconst GTK_TYPE_CHAR 2)
+(defconst GTK_TYPE_UCHAR 3)
+(defconst GTK_TYPE_BOOL 4)
+(defconst GTK_TYPE_INT 5)
+(defconst GTK_TYPE_UINT 6)
+(defconst GTK_TYPE_LONG 7)
+(defconst GTK_TYPE_ULONG 8)
+(defconst GTK_TYPE_FLOAT 9)
+(defconst GTK_TYPE_DOUBLE 10)
+(defconst GTK_TYPE_STRING 11)
+(defconst GTK_TYPE_ENUM 12)
+(defconst GTK_TYPE_FLAGS 13)
+(defconst GTK_TYPE_BOXED 14)
+(defconst GTK_TYPE_POINTER 15)
+(defconst GTK_TYPE_SIGNAL 16)
+(defconst GTK_TYPE_ARGS 17)
+(defconst GTK_TYPE_CALLBACK 18)
+(defconst GTK_TYPE_C_CALLBACK 19)
+(defconst GTK_TYPE_FOREIGN 20)
+(defconst GTK_TYPE_OBJECT 21)
+
+(defconst gtk-value-accessor-names
+  '("INVALID" "NONE" "CHAR" "UCHAR" "BOOL" "INT" "UINT" "LONG" "ULONG" "FLOAT" "DOUBLE"
+    "STRING" "ENUM" "FLAGS" "BOXED" "POINTER" "SIGNAL" "ARGS" "CALLBACK" "C_CALLBACK"
+    "FOREIGN" "OBJECT"))
+
+(defun define-widget-accessors (gtk-class
+				wrapper
+				prefix args)
+  "Output stub C code to access parts of a widget from lisp.
+GTK-CLASS is the GTK class to grant access to.
+WRAPPER is a fragment to construct GTK C macros for typechecking/etc. (ie: WIDGET)
+ARGS is a list of (type . name) cons cells.
+Defines a whole slew of functions to access & set the slots in the
+structure."
+  (set-buffer (get-buffer-create "emacs-widget-accessors.c"))
+  (goto-char (point-max))
+  (let ((arg)
+	(base-arg-type nil)
+	(lisp-func-name nil)
+	(c-func-name nil)
+	(func-names nil))
+    (setq gtk-class (symbol-name gtk-class)
+	  wrapper (upcase wrapper))
+    (while (setq arg (pop args))
+      (setq lisp-func-name (format "gtk-%s-%s" prefix (cdr arg))
+	    lisp-func-name (replace-in-string lisp-func-name "_" "-")
+	    c-func-name (concat "F" (replace-in-string lisp-func-name "-" "_")))
+      (insert
+       "DEFUN (\"" lisp-func-name "\", " c-func-name ", 1, 1, 0, /*\n"
+       "Access the `" (symbol-name (cdr arg)) "' slot of OBJ, a " gtk-class " object.\n"
+       "*/\n"
+       "\t(obj))\n"
+       "{\n"
+       (format "\t%s *the_obj = NULL;\n" gtk-class)
+       "\tGtkArg arg;\n"
+       "\n"
+       "\tCHECK_GTK_OBJECT (obj);\n"
+       "\n"
+       (format "\tif (!GTK_IS_%s (XGTK_OBJECT (obj)->object))\n" wrapper)
+       "\t{\n"
+       (format "\t\tsignal_simple_error (\"Object is not a %s\", obj);\n" gtk-class)
+       "\t};\n"
+       "\n"
+       (format "\tthe_obj = GTK_%s (XGTK_OBJECT (obj)->object);\n" wrapper)
+
+       (format "\targ.type = gtk_type_from_name (\"%s\");\n" (symbol-name (car arg))))
+;       (format "\targ.type = GTK_TYPE_%s;\n" (or
+;					       (nth (gtk-fundamental-type (car arg))
+;						    gtk-value-accessor-names)
+;					       (case (car arg)
+;						 (GtkListOfString "STRING_LIST")
+;						 (GtkListOfObject "OBJECT_LIST")
+;						 (otherwise
+;						  "POINTER")))))
+
+      (setq base-arg-type (gtk-fundamental-type (car arg)))
+      (cond
+       ((= base-arg-type GTK_TYPE_OBJECT)
+	(insert
+	 (format "\tGTK_VALUE_OBJECT (arg) = GTK_OBJECT (the_obj->%s);"
+		 (cdr arg))))
+       ((or (= base-arg-type GTK_TYPE_POINTER)
+	    (= base-arg-type GTK_TYPE_BOXED))
+	(insert
+	 (format "\tGTK_VALUE_%s (arg) = (void *)the_obj->%s;"
+		 (nth (gtk-fundamental-type (car arg)) gtk-value-accessor-names)
+		 (cdr arg))))
+       (t
+	(insert
+	 (format "\tGTK_VALUE_%s (arg) = the_obj->%s;"
+		 (or (nth (gtk-fundamental-type (car arg)) gtk-value-accessor-names) "POINTER")
+		 (cdr arg)))))
+      (insert
+       "\n"
+       "\treturn (gtk_type_to_lisp (&arg));\n"
+       "}\n\n")
+      (push c-func-name func-names))
+    func-names))
+
+(defun import-widget-accessors (file syms-function-name &rest description)
+  "Import multiple widgets, and emit a suitable vars_of_foo() function for them.\n"
+  (let ((c-mode-common-hook nil)
+	(c-mode-hook nil))
+    (find-file file))
+  (erase-buffer)
+  (let ((c-funcs nil))
+    (while description
+      (setq c-funcs (nconc (define-widget-accessors
+			     (pop description) (pop description)
+			     (pop description) (pop description)) c-funcs)))
+    (goto-char (point-max))
+    (insert "void " syms-function-name " (void)\n"
+	    "{\n\t"
+	    (mapconcat (lambda (x)
+			 (concat "DEFSUBR (" x ");")) c-funcs "\n\t")
+	    "\n}"))
+  (save-buffer))
+
+;; Because the new FFI layer imports GTK types lazily, we need to load
+;; up all of the gtk types we know about, or we get errors about
+;; unknown GTK types later on.
+(mapatoms (lambda (sym)
+	    (if (string-match "gtk-[^-]+-get-type" (symbol-name sym))
+		(funcall sym))))
+
+(import-widget-accessors
+ "../../src/emacs-widget-accessors.c"
+ "syms_of_widget_accessors "
+
+ 'GtkAdjustment "ADJUSTMENT" "adjustment"
+ '((gfloat . lower)
+   (gfloat . upper)
+   (gfloat . value)
+   (gfloat . step_increment)
+   (gfloat . page_increment)
+   (gfloat . page_size))
+
+ 'GtkWidget "WIDGET" "widget"
+ '((GtkStyle     . style)
+   (GdkWindow    . window)
+   (GtkStateType . state)
+   (GtkString    . name)
+   (GtkWidget    . parent))
+
+ 'GtkButton "BUTTON" "button"
+ '((GtkWidget  . child)
+   (gboolean   . in_button)
+   (gboolean   . button_down))
+
+ 'GtkCombo "COMBO" "combo"
+ '((GtkWidget  . entry)
+   (GtkWidget  . button)
+   (GtkWidget  . popup)
+   (GtkWidget  . popwin)
+   (GtkWidget  . list))
+
+ 'GtkGammaCurve "GAMMA_CURVE" "gamma-curve"
+ '((GtkWidget  . table)
+   (GtkWidget  . curve)
+   (gfloat      . gamma)
+   (GtkWidget  . gamma_dialog)
+   (GtkWidget  . gamma_text))
+
+ 'GtkCheckMenuItem "CHECK_MENU_ITEM" "check-menu-item"
+ '((gboolean   . active))
+
+ 'GtkNotebook "NOTEBOOK" "notebook"
+ '((GtkPositionType . tab_pos))
+
+ 'GtkText "TEXT" "text"
+ '((GtkAdjustment . hadj)
+   (GtkAdjustment . vadj))
+
+ 'GtkFileSelection "FILE_SELECTION" "file-selection"
+ '((GtkWidget . dir_list)
+   (GtkWidget . file_list)
+   (GtkWidget . selection_entry)
+   (GtkWidget . selection_text)
+   (GtkWidget . main_vbox)
+   (GtkWidget . ok_button)
+   (GtkWidget . cancel_button)
+   (GtkWidget . help_button)
+   (GtkWidget . action_area))
+
+ 'GtkFontSelectionDialog "FONT_SELECTION_DIALOG" "font-selection-dialog"
+ '((GtkWidget . fontsel)
+   (GtkWidget . main_vbox)
+   (GtkWidget . action_area)
+   (GtkWidget . ok_button)
+   (GtkWidget . apply_button)
+   (GtkWidget . cancel_button))
+
+ 'GtkColorSelectionDialog "COLOR_SELECTION_DIALOG" "color-selection-dialog"
+ '((GtkWidget . colorsel)
+   (GtkWidget . main_vbox)
+   (GtkWidget . ok_button)
+   (GtkWidget . reset_button)
+   (GtkWidget . cancel_button)
+   (GtkWidget . help_button))
+
+ 'GtkDialog "DIALOG" "dialog"
+ '((GtkWidget . vbox)
+   (GtkWidget . action_area))
+
+ 'GtkInputDialog "INPUT_DIALOG" "input-dialog"
+ '((GtkWidget . close_button)
+   (GtkWidget . save_button))
+
+ 'GtkPlug "PLUG" "plug"
+ '((GdkWindow . socket_window)
+   (gint      . same_app))
+
+ 'GtkObject "OBJECT" "object"
+ '((guint     . flags)
+   (guint     . ref_count))
+
+ 'GtkPaned "PANED" "paned"
+ '((GtkWidget . child1)
+   (GtkWidget . child2)
+   (gboolean  . child1_resize)
+   (gboolean  . child2_resize)
+   (gboolean  . child1_shrink)
+   (gboolean  . child2_shrink))
+
+ 'GtkCList "CLIST" "clist"
+ '((gint . rows)
+   (gint . columns)
+   (GtkAdjustment . hadjustment)
+   (GtkAdjustment . vadjustment)
+   (GtkSortType   . sort_type)
+   (gint . focus_row)
+   (gint . sort_column))
+
+ 'GtkList "LIST" "list"
+ '((GtkListOfObject . children)
+   (GtkListOfObject . selection))
+
+ 'GtkTree "TREE" "tree"
+ '((GtkListOfObject . children)
+   (GtkTree         . root_tree)
+   (GtkWidget       . tree_owner)
+   (GtkListOfObject . selection))
+
+ 'GtkTreeItem "TREE_ITEM" "tree-item"
+ '((GtkWidget       . subtree))
+
+ 'GtkScrolledWindow "SCROLLED_WINDOW" "scrolled-window"
+ '((GtkWidget . hscrollbar)
+   (GtkWidget . vscrollbar)
+   (gboolean  . hscrollbar_visible)
+   (gboolean  . vscrollbar_visible))
+
+ )