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alex mitchell's piano roll header: add correct motion event handler

This commit is contained in:
Paul Davis 2023-08-17 12:29:23 -06:00
parent baa32aa5bd
commit a3838f0c66
1 changed files with 79 additions and 19 deletions
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98
gtk2_ardour/piano_roll_header.cc
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@ -497,35 +497,93 @@ PianoRollHeader::get_note_name (int note)
bool
PianoRollHeader::on_motion_notify_event (GdkEventMotion* ev)
{
int note = _view.y_to_note (ev->y);
set_note_highlight (note);
if (!_scroomer_drag && ev->x < _scroomer_size){
Gdk::Cursor m_Cursor;
double scroomer_top = max(1.0, (1.0 - ((_adj.get_value()+_adj.get_page_size()) / 127.0)) * get_height () );
double scroomer_bottom = (1.0 - (_adj.get_value () / 127.0)) * get_height ();
if (ev->y > scroomer_top - 5 && ev->y < scroomer_top + 5){
m_Cursor = Gdk::Cursor (Gdk::TOP_SIDE);
get_window()->set_cursor(m_Cursor);
_scroomer_state = TOP;
}else if (ev->y > scroomer_bottom - 5 && ev->y < scroomer_bottom + 5){
m_Cursor = Gdk::Cursor (Gdk::BOTTOM_SIDE);
get_window()->set_cursor(m_Cursor);
_scroomer_state = BOTTOM;
}else {
_scroomer_state = MOVE;
get_window()->set_cursor();
}
}
if (_dragging) {
if (false /*editor().current_mouse_mode() == Editing::MouseRange*/) { //ToDo: fix this. this mode is buggy, and of questionable utility anyway
if (_scroomer_drag){
double pixel2val = 127.0 / get_height();
double delta = _old_y - ev->y;
double val_at_pointer = (delta * pixel2val);
double real_val_at_pointer = 127.0 - (ev->y * pixel2val);
double note_range = _adj.get_page_size ();
/* select note range */
switch (_scroomer_button_state){
case MOVE:
_fract += val_at_pointer;
_fract = (_fract + note_range > 127.0)? 127.0 - note_range : _fract;
_fract = max(0.0, _fract);
_adj.set_value (min(_fract, 127.0 - note_range));
break;
case TOP:
real_val_at_pointer = real_val_at_pointer <= _saved_top_val? _adj.get_value() + _adj.get_page_size() : real_val_at_pointer;
real_val_at_pointer = min(127.0, real_val_at_pointer);
if (_note_height >= 18.5){
_saved_top_val = min(_adj.get_value() + _adj.get_page_size (), 127.0);
}else _saved_top_val = 0.0;
//if we are at largest note size & the user is moving down don't do anything
//FIXME we are using a heuristic of 18.5 for max note size, but this changes when track size is small to 19.5?
_view.apply_note_range (_adj.get_value (), real_val_at_pointer, true);
break;
case BOTTOM:
real_val_at_pointer = max(0.0, real_val_at_pointer);
real_val_at_pointer = real_val_at_pointer >= _saved_bottom_val? _adj.get_value() : real_val_at_pointer;
if (_note_height >= 18.5){
_saved_bottom_val = _adj.get_value();
}else _saved_bottom_val = 127.0;
_view.apply_note_range (real_val_at_pointer, _adj.get_value () + _adj.get_page_size (), true);
break;
default:
break;
}
}else{
int note = _view.y_to_note(ev->y);
set_note_highlight (note);
if (Keyboard::no_modifiers_active (ev->state)) {
AddNoteSelection (note); // EMIT SIGNAL
}
if (_dragging) {
} else {
/* play notes */
/* redraw already taken care of above in set_note_highlight */
if (_clicked_note != NO_MIDI_NOTE && _clicked_note != note) {
_active_notes[_clicked_note] = false;
send_note_off (_clicked_note);
if ( false /*editor().current_mouse_mode() == Editing::MouseRange*/ ) { //ToDo: fix this. this mode is buggy, and of questionable utility anyway
_clicked_note = note;
/* select note range */
if (!_active_notes[note]) {
_active_notes[note] = true;
send_note_on (note);
if (Keyboard::no_modifiers_active (ev->state)) {
AddNoteSelection (note); // EMIT SIGNAL
}
} else {
/* play notes */
/* redraw already taken care of above in set_note_highlight */
if (_clicked_note != NO_MIDI_NOTE && _clicked_note != note) {
_active_notes[_clicked_note] = false;
send_note_off(_clicked_note);
_clicked_note = note;
if (!_active_notes[note]) {
_active_notes[note] = true;
send_note_on(note);
}
}
}
}
}
_adj.value_changed ();
queue_draw ();
_old_y = ev->y;
//win->process_updates(false);
return true;
@ -540,6 +598,7 @@ PianoRollHeader::on_button_press_event (GdkEventButton* ev)
_old_y = ev->y;
_fract = _adj.get_value();
_fract_top = _adj.get_value() + _adj.get_page_size();
std::cerr << "scroomer drag ON\n";
return true;
}else {
int note = _view.y_to_note(ev->y);
@ -583,6 +642,7 @@ PianoRollHeader::on_button_release_event (GdkEventButton* ev)
{
if (_scroomer_drag){
_scroomer_drag = false;
std::cerr << "scroomer drag OFF\n";
}
int note = _view.y_to_note(ev->y);