Draw method for Text Display and derivatives, concrete Menu_ derivatives

1 files changed, 42 insertions, 2 deletions

diff --git a/src/c_fl_menu_bar.cpp b/src/c_fl_menu_bar.cpp
index 3349008..3246a97 100644
--- a/src/c_fl_menu_bar.cpp
+++ b/src/c_fl_menu_bar.cpp
@@ -4,13 +4,53 @@
 #include "c_fl_menu_bar.h"
 
 
+typedef void (hook)(void*);
+typedef hook* hook_p;
+
+
+
+
+class My_Menu_Bar : public Fl_Menu_Bar {
+    public:
+        using Fl_Menu_Bar::Fl_Menu_Bar;
+        friend void menu_bar_set_draw_hook(MENUBAR m, void * d);
+        friend void fl_menu_bar_draw(MENUBAR m);
+    protected:
+        void draw();
+        void real_draw();
+        hook_p draw_hook;
+};
+
+
+void My_Menu_Bar::draw() {
+    (*draw_hook)(this->user_data());
+}
+
+
+void My_Menu_Bar::real_draw() {
+    Fl_Menu_Bar::draw();
+}
+
+
+void menu_bar_set_draw_hook(MENUBAR m, void * d) {
+    reinterpret_cast<My_Menu_Bar*>(m)->draw_hook = reinterpret_cast<hook_p>(d);
+}
+
+
+void fl_menu_bar_draw(MENUBAR m) {
+    reinterpret_cast<My_Menu_Bar*>(m)->real_draw();
+}
+
+
+
+
 MENUBAR new_fl_menu_bar(int x, int y, int w, int h, char* label) {
-    Fl_Menu_Bar *m = new Fl_Menu_Bar(x, y, w, h, label);
+    My_Menu_Bar *m = new My_Menu_Bar(x, y, w, h, label);
     return m;
 }
 
 
 void free_fl_menu_bar(MENUBAR m) {
-    delete reinterpret_cast<Fl_Menu_Bar*>(m);
+    delete reinterpret_cast<My_Menu_Bar*>(m);
 }