a reverb is a reverb is a reverb

[ardour.git] / gtk2_ardour / ardour_dropdown.cc

diff --git a/gtk2_ardour/ardour_dropdown.cc b/gtk2_ardour/ardour_dropdown.cc
index cd1bfefed35ef71aa1b66675d7b8ad5b9d55f4ce..6c527f2d27b356721bbc7cd71ab5c51fa24ba5db 100644 (file)
--- a/gtk2_ardour/ardour_dropdown.cc
+++ b/gtk2_ardour/ardour_dropdown.cc
@@ -34,10 +34,8 @@
 #include "ardour/rc_configuration.h" // for widget prelight preference
 
 #include "ardour_dropdown.h"
-#include "ardour_ui.h"
-#include "global_signals.h"
 
-#include "i18n.h"
+#include "pbd/i18n.h"
 
 #define REFLECTION_HEIGHT 2
 
@@ -45,14 +43,16 @@ using namespace Gdk;
 using namespace Gtk;
 using namespace Glib;
 using namespace PBD;
-using std::max;
-using std::min;
 using namespace std;
 
 
 ArdourDropdown::ArdourDropdown (Element e)
+       : _scrolling_disabled(false)
 {
 //     signal_button_press_event().connect (sigc::mem_fun(*this, &ArdourDropdown::on_mouse_pressed));
+       _menu.signal_size_request().connect (sigc::mem_fun(*this, &ArdourDropdown::menu_size_request));
+
+       _menu.set_reserve_toggle_size(false);
 
        add_elements(e);
        add_elements(ArdourButton::Menu);
@@ -62,10 +62,78 @@ ArdourDropdown::~ArdourDropdown ()
 {
 }
 
+void
+ArdourDropdown::menu_size_request(Requisition *req) {
+       req->width = max(req->width, get_allocation().get_width());
+}
+
+bool
+ArdourDropdown::on_button_press_event (GdkEventButton* ev)
+{
+       if (ev->type == GDK_BUTTON_PRESS) {
+               Gtkmm2ext::anchored_menu_popup(&_menu, this, get_text(), 1, ev->time);
+       }
+       return true;
+}
+
 bool
-ArdourDropdown::on_button_press_event (GdkEventButton*)
+ArdourDropdown::on_scroll_event (GdkEventScroll* ev)
 {
-       _menu.popup (1, gtk_get_current_event_time());  
+       using namespace Menu_Helpers;
+
+       if (_scrolling_disabled) {
+               return false;
+       }
+
+       const MenuItem * current_active = _menu.get_active();
+       const MenuList& items = _menu.items ();
+       int c = 0;
+
+       if (!current_active) {
+               return true;
+       }
+
+       /* work around another gtkmm API clusterfuck
+        * const MenuItem* get_active () const
+        * void set_active (guint index)
+        *
+        * also MenuList.activate_item does not actually
+        * set it as active in the menu.
+        *
+        */
+
+       switch (ev->direction) {
+               case GDK_SCROLL_UP:
+
+                       for (MenuList::const_reverse_iterator i = items.rbegin(); i != items.rend(); ++i, ++c) {
+                               if ( &(*i) != current_active) {
+                                       continue;
+                               }
+                               if (++i != items.rend()) {
+                                       c = items.size() - 2 - c;
+                                       assert(c >= 0);
+                                       _menu.set_active(c);
+                                       _menu.activate_item(*i);
+                               }
+                               break;
+                       }
+                       break;
+               case GDK_SCROLL_DOWN:
+                       for (MenuList::const_iterator i = items.begin(); i != items.end(); ++i, ++c) {
+                               if ( &(*i) != current_active) {
+                                       continue;
+                               }
+                               if (++i != items.end()) {
+                                       assert(c + 1 < (int) items.size());
+                                       _menu.set_active(c + 1);
+                                       _menu.activate_item(*i);
+                               }
+                               break;
+                       }
+                       break;
+               default:
+                       break;
+       }
        return true;
 }
 
@@ -76,13 +144,17 @@ ArdourDropdown::clear_items ()
 }
 
 void
-ArdourDropdown::AddMenuElem (Menu_Helpers::MenuElem e)
+ArdourDropdown::AddMenuElem (Menu_Helpers::Element e)
 {
        using namespace Menu_Helpers;
 
        MenuList& items = _menu.items ();
-       
+
        items.push_back (e);
 }
 
-
+void
+ArdourDropdown::disable_scrolling()
+{
+       _scrolling_disabled = true;
+}