Draw method implemented for Boxes/Inputs

1 files changed, 42 insertions, 2 deletions

diff --git a/src/c_fl_box.cpp b/src/c_fl_box.cpp
index eeee320..18afb1a 100644
--- a/src/c_fl_box.cpp
+++ b/src/c_fl_box.cpp
@@ -4,13 +4,53 @@
 #include "c_fl_box.h"
 
 
+typedef void (hook)(void*);
+typedef hook* hook_p;
+
+
+
+
+class My_Box : public Fl_Box {
+    public:
+        using Fl_Box::Fl_Box;
+        friend void box_set_draw_hook(BOX n, void * d);
+        friend void fl_box_draw(BOX n);
+    protected:
+        void draw();
+        void real_draw();
+        hook_p draw_hook;
+};
+
+
+void My_Box::draw() {
+    (*draw_hook)(this->user_data());
+}
+
+
+void My_Box::real_draw() {
+    Fl_Box::draw();
+}
+
+
+void box_set_draw_hook(BOX n, void * d) {
+    reinterpret_cast<My_Box*>(n)->draw_hook = reinterpret_cast<hook_p>(d);
+}
+
+
+void fl_box_draw(BOX n) {
+    reinterpret_cast<My_Box*>(n)->real_draw();
+}
+
+
+
+
 BOX new_fl_box(int x, int y, int w, int h, char* label) {
-    Fl_Box *b = new Fl_Box(x, y, w, h, label);
+    My_Box *b = new My_Box(x, y, w, h, label);
     return b;
 }
 
 
 void free_fl_box(BOX b) {
-    delete reinterpret_cast<Fl_Box*>(b);
+    delete reinterpret_cast<My_Box*>(b);
 }