--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/menu_processor.inc	Wed Apr 24 19:22:45 2013 +0200
@@ -0,0 +1,88 @@
+;=============================================================================
+;
+;   File menu_processor.asm
+;
+;   Routines to handle all OSTC3 graphic/text menus.
+;
+;   Copyright (c) 2011, JD Gascuel, HeinrichsWeikamp, all right reserved.
+;=============================================================================
+; HISTORY
+;   2011-05-30 : [jDG] Creation.
+
+    ; Restart menu-system from first icon/line:
+    extern  menu_processor_reset
+    
+    ; Recal last (automatically) saved icon/line when returning from submenu.
+    extern  menu_processor_pop
+
+    ; Rexecute the menu block
+    extern  menu_processor
+
+;=============================================================================
+; Menus parameters
+
+;NOTE: should be idenric in .inc and .asm !
+#define MENU_LINES_MAX  .7              ; Number of lines per screen?
+#define MENU_HEIGHT     .27             ; Spacing on screen.
+#define MENU_VCENTER    .125            ; Position on screen.
+
+;=============================================================================
+
+COMMON_BEGIN_MENU  MACRO    dynamic, txt, nb_items
+        local center
+        If nb_items > MENU_LINES_MAX
+center      set MENU_VCENTER - (MENU_HEIGHT/2) * MENU_LINES_MAX
+        Else
+center      set MENU_VCENTER - (MENU_HEIGHT/2) * nb_items
+        Endif
+        If nb_items <= 0
+            Error "Zero items in menu ", x
+        Endif
+
+        extern  txt
+        call    menu_processor
+        ; Push 6 bytes of menu header data.
+        db      nb_items, dynamic
+        db      LOW(txt), HIGH(txt)
+        db      UPPER(txt), center
+    ENDM
+
+;=============================================================================
+; Macro to generat (and check) menu vertical menu blocks with data.
+;
+MENU_BEGIN  MACRO   menu_title, nb_items
+        COMMON_BEGIN_MENU    0, menu_title, nb_items
+    ENDM
+
+MENU_BEGIN_DYNAMIC macro title_proc, nb_items
+        COMMON_BEGIN_MENU    1, title_proc, nb_items
+    ENDM
+
+;=============================================================================
+
+; Submenu
+MENU_CALL   MACRO   txt, proc
+        extern  txt
+        db      0, 0, 0, 0
+        db      LOW(proc),  HIGH(proc), UPPER(proc),     0
+        db      LOW(txt),   HIGH(txt)
+    ENDM
+
+; Generic option menu
+MENU_OPTION MACRO   txt, option, callback
+        extern  txt
+        extern  option
+        db      2, LOW(callback), HIGH(callback), UPPER(callback)
+        db      LOW(option),HIGH(option),UPPER(option), 0
+        db      LOW(txt),   HIGH(txt)
+    ENDM
+
+MENU_DYNAMIC MACRO  callback, proc
+        extern  callback
+        db      3, LOW(callback), HIGH(callback), UPPER(callback)
+        db      LOW(proc),     HIGH(proc),      UPPER(proc),    0
+        db      0, 0
+    ENDM
+
+MENU_END    MACRO
+    ENDM
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