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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
View file

@ -451,6 +451,7 @@ StepView::StepView (SequencerGrid& sg, Step& s, ArdourCanvas::Item* parent)
, _step (s) , _step (s)
, _seq (sg) , _seq (sg)
, text (new Text (this)) , text (new Text (this))
, grabbed (false)
{ {
set_fill_color (UIConfiguration::instance().color ("selection")); set_fill_color (UIConfiguration::instance().color ("selection"));
@ -552,6 +553,31 @@ StepView::on_event (GdkEvent *ev)
bool bool
StepView::motion_event (GdkEventMotion* ev) 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; return true;
} }
@ -559,12 +585,17 @@ bool
StepView::button_press_event (GdkEventButton* ev) StepView::button_press_event (GdkEventButton* ev)
{ {
grab_at = std::make_pair (ev->x, ev->y); grab_at = std::make_pair (ev->x, ev->y);
last_motion = grab_at;
grab ();
grabbed = true;
return true; return true;
} }
bool bool
StepView::button_release_event (GdkEventButton* ev) StepView::button_release_event (GdkEventButton* ev)
{ {
ungrab ();
grabbed = false;
return true; return true;
} }

2
gtk2_ardour/beatbox_gui.h
View file

@ -78,8 +78,10 @@ class StepView : public ArdourCanvas::Rectangle, public sigc::trackable {
ARDOUR::Step& _step; ARDOUR::Step& _step;
SequencerGrid& _seq; SequencerGrid& _seq;
ArdourCanvas::Text* text; ArdourCanvas::Text* text;
bool grabbed;
std::pair<double,double> grab_at; std::pair<double,double> grab_at;
std::pair<double,double> last_motion;
bool motion_event (GdkEventMotion*); bool motion_event (GdkEventMotion*);
bool button_press_event (GdkEventButton*); bool button_press_event (GdkEventButton*);