Initial revision

git-svn-id: file:///fltk/svn/fltk/trunk@2 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

1 files changed, 96 insertions, 0 deletions

diff --git a/src/Fl_Menu_.cxx b/src/Fl_Menu_.cxx
new file mode 100644
index 000000000..a045b3489
--- /dev/null
+++ b/src/Fl_Menu_.cxx
@@ -0,0 +1,96 @@
+// Fl_Menu_.C
+
+// This is a base class for all items that have a menu:
+//	Fl_Menu_Bar, Fl_Menu_Button, Fl_Choice
+// This provides storage for a menu item, functions to add/modify/delete
+// items, and a call for when the user picks a menu item.
+
+// More code in Fl_Menu_add.C
+
+#include <FL/Fl.H>
+#include <FL/Fl_Menu_.H>
+#include <stdlib.h>
+
+Fl_Font Fl_Menu_::default_font_;
+int Fl_Menu_::default_size_;
+
+int Fl_Menu_::value(const Fl_Menu_Item* m) {
+  clear_changed();
+  if (value_ != m) {value_ = m; return 1;}
+  return 0;
+}
+
+// When user picks a menu item, call this.  It will do the callback.
+// Unfortunatly this also casts away const for the checkboxes, but this
+// was necessary so non-checkbox menus can really be declared const...
+const Fl_Menu_Item* Fl_Menu_::picked(const Fl_Menu_Item* v) {
+  if (v) {
+    if (v->radio()) {
+      if (!v->value()) { // they are turning on a radio item
+	set_changed();
+	((Fl_Menu_Item*)v)->setonly();
+      }
+    } else if (v->flags & FL_MENU_TOGGLE) {
+      set_changed();
+      ((Fl_Menu_Item*)v)->flags ^= FL_MENU_VALUE;
+    } else if (v != value_) { // normal item
+      set_changed();
+    }
+    value_ = v;
+    if (when()&(FL_WHEN_CHANGED|FL_WHEN_RELEASE)) {
+      if (changed() || when()&FL_WHEN_NOT_CHANGED) {
+	clear_changed();
+	if (value_ && value_->callback_) value_->do_callback((Fl_Widget*)this);
+	else do_callback();
+      }
+    }
+  }
+  return v;
+}
+
+// turn on one of a set of radio buttons
+void Fl_Menu_Item::setonly() {
+  flags |= FL_MENU_RADIO | FL_MENU_VALUE;
+  Fl_Menu_Item* j;
+  for (j = this; ; ) {	// go down
+    if (j->flags & FL_MENU_DIVIDER) break; // stop on divider lines
+    j++;
+    if (!j->text || !j->radio()) break; // stop after group
+    j->clear();
+  }
+  for (j = this-1; ; j--) { // go up
+    if (!j->text || (j->flags&FL_MENU_DIVIDER) || !j->radio()) break;
+    j->clear();
+  }
+}
+
+Fl_Menu_::Fl_Menu_(int X,int Y,int W,int H,const char* l)
+: Fl_Widget(X,Y,W,H,l) {
+  set_flag(SHORTCUT_LABEL);
+  box(FL_UP_BOX);
+  when(FL_WHEN_RELEASE_ALWAYS);
+  value_ = menu_ = 0;
+  alloc = 0;
+  selection_color(FL_SELECTION_COLOR);
+  textfont(FL_HELVETICA);
+  textsize(FL_NORMAL_SIZE);
+  textcolor(FL_BLACK);
+  down_box(FL_NO_BOX);
+}
+
+int Fl_Menu_::size() const {
+  if (!menu_) return 0;
+  return menu_->size();
+}
+
+void Fl_Menu_::menu(const Fl_Menu_Item* m) {
+  // if (alloc) clear();
+  alloc = 0;
+  value_ = menu_ = (Fl_Menu_Item*)m;
+}
+
+Fl_Menu_::~Fl_Menu_() {
+  // if (alloc) clear();
+}
+
+// end of Fl_Menu_.C