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mouse drag operations in beatbox

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This commit is contained in:
Paul Davis 2018-11-07 20:54:22 -05:00
parent 62eb966dae
commit 20047e09f2
2 changed files with 33 additions and 0 deletions
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31
gtk2_ardour/beatbox_gui.cc
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@ -451,6 +451,7 @@ StepView::StepView (SequencerGrid& sg, Step& s, ArdourCanvas::Item* parent)
, _step (s)
, _seq (sg)
, text (new Text (this))
, grabbed (false)
{
set_fill_color (UIConfiguration::instance().color ("selection"));
@ -552,6 +553,31 @@ StepView::on_event (GdkEvent *ev)
bool
StepView::motion_event (GdkEventMotion* ev)
{
if (!grabbed) {
return false;
}
const double xdelta = ev->x - last_motion.first;
const double ydelta = last_motion.second - ev->y;
//const double distance = sqrt (xdelta * xdelta + ydelta * ydelta);
const double distance = ydelta;
if ((ev->state & GDK_MOD1_MASK) || _seq.mode() == SequencerGrid::Pitch) {
cerr << "adjust pitch by " << distance << endl;
adjust_step_pitch (distance);
} else if (_seq.mode() == SequencerGrid::Velocity) {
cerr << "adjust velocity by " << distance << endl;
adjust_step_velocity (distance);
} else if (_seq.mode() == SequencerGrid::Duration) {
cerr << "adjust duration by " << Step::DurationRatio (distance, 32) << endl;
adjust_step_duration (Step::DurationRatio (distance, 32)); /* adjust by 1/32 of the sequencer step size */
} else if (_seq.mode() == SequencerGrid::Octave) {
adjust_step_octave (distance);
} else if (_seq.mode() == SequencerGrid::Group) {
}
last_motion = std::make_pair (ev->x, ev->y);
return true;
}
@ -559,12 +585,17 @@ bool
StepView::button_press_event (GdkEventButton* ev)
{
grab_at = std::make_pair (ev->x, ev->y);
last_motion = grab_at;
grab ();
grabbed = true;
return true;
}
bool
StepView::button_release_event (GdkEventButton* ev)
{
ungrab ();
grabbed = false;
return true;
}