+
+void
+AudioMappingView::mouse_moved (wxMouseEvent& ev)
+{
+ int xx;
+ int yy;
+ _grid->CalcUnscrolledPosition (ev.GetX(), ev.GetY(), &xx, &yy);
+
+ int const row = _grid->YToRow (yy);
+ int const column = _grid->XToCol (xx);
+
+ if (row < 0 || column < 1) {
+ _grid->GetGridWindow()->SetToolTip ("");
+ _last_tooltip_row = row;
+ _last_tooltip_column = column;
+ }
+
+ if (row != _last_tooltip_row || column != _last_tooltip_column) {
+
+ wxString s;
+ float const gain = _map.get (row, static_cast<dcp::Channel> (column - 1));
+ if (gain == 0) {
+ s = wxString::Format (_("No audio will be passed from content channel %d to DCP channel %d."), row + 1, column);
+ } else if (gain == 1) {
+ s = wxString::Format (_("Audio will be passed from content channel %d to DCP channel %d unaltered."), row + 1, column);
+ } else {
+ float const dB = 20 * log10 (gain);
+ s = wxString::Format (_("Audio will be passed from content channel %d to DCP channel %d with gain %.1fdB."), row + 1, column, dB);
+ }
+
+ _grid->GetGridWindow()->SetToolTip (s + " " + _("Right click to change gain."));
+ _last_tooltip_row = row;
+ _last_tooltip_column = column;
+ }
+
+ ev.Skip ();
+}