add explanatory comments

[ardour.git] / gtk2_ardour / step_entry.cc

diff --git a/gtk2_ardour/step_entry.cc b/gtk2_ardour/step_entry.cc
index 77d7b1409a2333a06ca320fab8d94a6a78102c59..756adfde4cbb1653b6f911b6916f72d55f3f18b0 100644 (file)
--- a/gtk2_ardour/step_entry.cc
+++ b/gtk2_ardour/step_entry.cc
@@ -46,7 +46,7 @@ using namespace ARDOUR_UI_UTILS;
 using namespace ArdourWidgets;
 
 Gtkmm2ext::Bindings* StepEntry::bindings = 0;
-StepEntry* StepEntry::_current_step_entry = 0;
+StepEntry* StepEntry::_instance = 0;
 
 static void
 _note_off_event_handler (GtkWidget* /*widget*/, int note, gpointer arg)
@@ -60,8 +60,18 @@ _rest_event_handler (GtkWidget* /*widget*/, gpointer arg)
        ((StepEntry*)arg)->rest_event_handler ();
 }
 
-StepEntry::StepEntry (StepEditor& seditor)
-       : ArdourWindow (string_compose (_("Step Entry: %1"), seditor.name()))
+StepEntry&
+StepEntry::instance()
+{
+       if (!_instance) {
+               _instance = new StepEntry;
+       }
+
+       return *_instance;
+}
+
+StepEntry::StepEntry ()
+       : ArdourWindow (string())
        , _current_note_length (1.0)
        , _current_note_velocity (64)
        , triplet_button ("3")
@@ -89,27 +99,10 @@ StepEntry::StepEntry (StepEditor& seditor)
        , program_button (_("+"))
        , _piano (0)
        , piano (0)
-       , se (&seditor)
+       , se (0)
 {
        set_data ("ardour-bindings", bindings);
 
-#if 0
-       /* set channel selector to first selected channel. if none
-          are selected, it will remain at the value set in its
-          constructor, above (1)
-       */
-
-       uint16_t chn_mask = se->channel_selector().get_selected_channels();
-
-       for (uint32_t i = 0; i < 16; ++i) {
-               if (chn_mask & (1<<i)) {
-                       channel_adjustment.set_value (i+1);
-                       break;
-               }
-       }
-
-#endif
-
        RadioButtonGroup length_group = length_1_button.get_group();
        length_2_button.set_group (length_group);
        length_4_button.set_group (length_group);
@@ -473,6 +466,35 @@ StepEntry::~StepEntry()
 {
 }
 
+void
+StepEntry::set_step_editor (StepEditor* seditor)
+{
+       se = seditor;
+
+       if (se) {
+               set_title (string_compose (_("Step Entry: %1"), se->name()));
+#if 0
+               /* set channel selector to first selected channel. if none
+                  are selected, it will remain at the value set in its
+                  constructor, above (1)
+               */
+
+               uint16_t chn_mask = se->channel_selector().get_selected_channels();
+
+               for (uint32_t i = 0; i < 16; ++i) {
+                       if (chn_mask & (1<<i)) {
+                               channel_adjustment.set_value (i+1);
+                               break;
+                       }
+               }
+
+#endif
+       } else {
+               hide ();
+       }
+}
+
+
 void
 StepEntry::length_changed ()
 {
@@ -514,7 +536,9 @@ StepEntry::on_key_release_event (GdkEventKey* ev)
 void
 StepEntry::rest_event_handler ()
 {
-       se->step_edit_rest (Temporal::Beats());
+       if (se) {
+               se->step_edit_rest (Temporal::Beats());
+       }
 }
 
 Temporal::Beats
@@ -569,13 +593,17 @@ StepEntry::on_show ()
 void
 StepEntry::beat_resync_click ()
 {
-       se->step_edit_beat_sync ();
+       if (se) {
+               se->step_edit_beat_sync ();
+       }
 }
 
 void
 StepEntry::bar_resync_click ()
 {
-       se->step_edit_bar_sync ();
+       if (se) {
+               se->step_edit_bar_sync ();
+       }
 }
 
 void
@@ -699,13 +727,17 @@ StepEntry::load_bindings ()
 void
 StepEntry::toggle_triplet ()
 {
-       se->set_step_edit_cursor_width (note_length());
+       if (se) {
+               se->set_step_edit_cursor_width (note_length());
+       }
 }
 
 void
 StepEntry::toggle_chord ()
 {
-       se->step_edit_toggle_chord ();
+       if (se) {
+               se->step_edit_toggle_chord ();
+       }
 }
 
 void
@@ -752,31 +784,41 @@ StepEntry::dot_value_change ()
        dot2_button.set_inconsistent (inconsistent);
        dot3_button.set_inconsistent (inconsistent);
 
-       se->set_step_edit_cursor_width (note_length());
+       if (se) {
+               se->set_step_edit_cursor_width (note_length());
+       }
 }
 
 void
 StepEntry::program_click ()
 {
-       se->step_add_program_change (note_channel(), (int8_t) floor (program_adjustment.get_value()));
+       if (se) {
+               se->step_add_program_change (note_channel(), (int8_t) floor (program_adjustment.get_value()));
+       }
 }
 
 void
 StepEntry::bank_click ()
 {
-       se->step_add_bank_change (note_channel(), (int8_t) floor (bank_adjustment.get_value()));
+       if (se) {
+               se->step_add_bank_change (note_channel(), (int8_t) floor (bank_adjustment.get_value()));
+       }
 }
 
 void
 StepEntry::insert_rest ()
 {
-       se->step_edit_rest (note_length());
+       if (se) {
+               se->step_edit_rest (note_length());
+       }
 }
 
 void
 StepEntry::insert_grid_rest ()
 {
-       se->step_edit_rest (Temporal::Beats());
+       if (se) {
+               se->step_edit_rest (Temporal::Beats());
+       }
 }
 
 void
@@ -786,7 +828,9 @@ StepEntry::insert_note (uint8_t note)
                return;
        }
 
-       se->step_add_note (note_channel(), note, note_velocity(), note_length());
+       if (se) {
+               se->step_add_note (note_channel(), note, note_velocity(), note_length());
+       }
 }
 void
 StepEntry::insert_c ()
@@ -935,7 +979,6 @@ StepEntry::length_value_change ()
 {
        RefPtr<Action> act;
        RefPtr<RadioAction> ract;
-       double val = length_divisor_adjustment.get_value();
        bool inconsistent = true;
        vector<const char*> length_actions;
 
@@ -964,7 +1007,9 @@ StepEntry::length_value_change ()
        length_32_button.set_inconsistent (inconsistent);
        length_64_button.set_inconsistent (inconsistent);
 
-       se->set_step_edit_cursor_width (note_length());
+       if (se) {
+               se->set_step_edit_cursor_width (note_length());
+       }
 }
 
 bool
@@ -1124,31 +1169,23 @@ StepEntry::octave_n (int n)
 void
 StepEntry::do_sustain ()
 {
-       se->step_edit_sustain (note_length());
+       if (se) {
+               se->step_edit_sustain (note_length());
+       }
 }
 
 void
 StepEntry::back ()
 {
-       se->move_step_edit_beat_pos (-note_length());
+       if (se) {
+               se->move_step_edit_beat_pos (-note_length());
+       }
 }
 
 void
 StepEntry::sync_to_edit_point ()
 {
-       se->resync_step_edit_to_edit_point ();
-}
-
-bool
-StepEntry::on_focus_in_event (GdkEventFocus* ev)
-{
-       _current_step_entry = this;
-       return ArdourWindow::on_focus_in_event (ev);
-}
-
-bool
-StepEntry::on_focus_out_event (GdkEventFocus* ev)
-{
-       _current_step_entry = 0;
-       return ArdourWindow::on_focus_out_event (ev);
+       if (se) {
+               se->resync_step_edit_to_edit_point ();
+       }
 }