* Added CanvasSysEx class for displaying SysExes

[ardour.git] / gtk2_ardour / level_meter.cc

diff --git a/gtk2_ardour/level_meter.cc b/gtk2_ardour/level_meter.cc
index cc1df9add5ecb79cf8276164678c3f21888079c5..f7b44d1b0861778bb57a9834f45a086200486900 100644 (file)
--- a/gtk2_ardour/level_meter.cc
+++ b/gtk2_ardour/level_meter.cc
@@ -58,15 +58,15 @@ using namespace std;
 //sigc::signal<void,RouteGroup*> LevelMeter::ResetGroupPeakDisplays;
 
 
-LevelMeter::LevelMeter (boost::shared_ptr<IO> io, Session& s)
-       : _io (io),
-         _session (s)
+LevelMeter::LevelMeter (Session& s)
+       : _session (s)
        
 {
        set_spacing (1);
        Config->ParameterChanged.connect (mem_fun (*this, &LevelMeter::parameter_changed));
        UI::instance()->theme_changed.connect (mem_fun(*this, &LevelMeter::on_theme_changed));
        ColorsChanged.connect (mem_fun (*this, &LevelMeter::color_handler));
+       max_peak = minus_infinity();
 }
 
 void
@@ -78,13 +78,17 @@ LevelMeter::on_theme_changed()
 LevelMeter::~LevelMeter ()
 {
        for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); i++) {
-               if ((*i).meter) {
-                       delete (*i).meter;
-               }
+               delete (*i).meter;
        }
 }
 
 void
+LevelMeter::set_io (boost::shared_ptr<IO> io)
+{
+       _io = io;
+}
+
+float
 LevelMeter::update_meters ()
 {
        vector<MeterInfo>::iterator i;
@@ -96,8 +100,15 @@ LevelMeter::update_meters ()
                        peak = _io->peak_meter().peak_power (n);
                        (*i).meter->set (log_meter (peak));
                        mpeak = _io->peak_meter().max_peak_power(n);
+                       if (mpeak > max_peak) {
+                               max_peak = mpeak;
+                       }
+                       if (mpeak > max_peak) {
+                               max_peak = mpeak;
+                       }
                }
        }
+       return max_peak;
 }
 
 void
@@ -134,9 +145,15 @@ LevelMeter::hide_all_meters ()
 }
 
 void
-LevelMeter::setup_meters (int len)
+LevelMeter::setup_meters (int len, int initial_width)
 {
+       if (!_io) {
+               return; /* do it later */
+       }
+ 
        uint32_t nmeters = _io->n_outputs().n_total();
+       regular_meter_width = initial_width;
+
        guint16 width;
 
        hide_all_meters ();
@@ -191,6 +208,7 @@ LevelMeter::setup_meters (int len)
                        meters[n].width = width;
                        meters[n].length = len;
                        meters[n].meter->add_events (Gdk::BUTTON_RELEASE_MASK);
+                       meters[n].meter->signal_button_release_event().connect (bind (mem_fun(*this, &LevelMeter::meter_button_release), n));
                }
 
                pack_end (*meters[n].meter, false, false);
@@ -199,13 +217,24 @@ LevelMeter::setup_meters (int len)
        }
        show();
        color_changed = false;
-}      
+}
+
+gint
+LevelMeter::meter_button_release (GdkEventButton* ev, uint32_t which)
+{
+       if (ev->button == 1) {
+               clear_meters();
+       }
+       return true;
+}
+       
 
 void LevelMeter::clear_meters ()
 {
        for (vector<MeterInfo>::iterator i = meters.begin(); i < meters.end(); i++) {
                (*i).meter->clear();
        }
+       max_peak = minus_infinity();
 }
 
 void LevelMeter::hide_meters ()