ardour/livetrax
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make knob respond to X & Y axis drags

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This commit is contained in:
Robin Gareus 2015-04-25 02:44:47 +02:00
parent c43c3d3e08
commit c809e528c0
2 changed files with 9 additions and 5 deletions
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13
gtk2_ardour/ardour_knob.cc
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@ -57,6 +57,7 @@ ArdourKnob::Element ArdourKnob::default_elements = ArdourKnob::Element (ArdourKn
ArdourKnob::ArdourKnob (Element e, bool arc_to_zero) ArdourKnob::ArdourKnob (Element e, bool arc_to_zero)
: _elements (e) : _elements (e)
, _hovering (false) , _hovering (false)
, _grabbed_x (0)
, _grabbed_y (0) , _grabbed_y (0)
, _val (0) , _val (0)
, _zero (0) , _zero (0)
@ -320,18 +321,19 @@ ArdourKnob::on_motion_notify_event (GdkEventMotion *ev)
} }
//calculate the travel of the mouse //calculate the travel of the mouse
int y_delta = 0; int delta = 0;
if (ev->state & Gdk::BUTTON1_MASK) { if (ev->state & Gdk::BUTTON1_MASK) {
y_delta = _grabbed_y - ev->y; delta = (_grabbed_y - ev->y) - (_grabbed_x - ev->x);
_grabbed_x = ev->x;
_grabbed_y = ev->y; _grabbed_y = ev->y;
if (y_delta == 0) return TRUE; if (delta == 0) return TRUE;
} }
//step the value of the controllable //step the value of the controllable
boost::shared_ptr<PBD::Controllable> c = binding_proxy.get_controllable(); boost::shared_ptr<PBD::Controllable> c = binding_proxy.get_controllable();
if (c) { if (c) {
float val = c->get_interface(); float val = c->get_interface();
val += y_delta * scale; val += delta * scale;
c->set_interface(val); c->set_interface(val);
} }
@ -341,6 +343,7 @@ ArdourKnob::on_motion_notify_event (GdkEventMotion *ev)
bool bool
ArdourKnob::on_button_press_event (GdkEventButton *ev) ArdourKnob::on_button_press_event (GdkEventButton *ev)
{ {
_grabbed_x = ev->x;
_grabbed_y = ev->y; _grabbed_y = ev->y;
_tooltip.start_drag(); _tooltip.start_drag();
@ -356,7 +359,7 @@ ArdourKnob::on_button_press_event (GdkEventButton *ev)
bool bool
ArdourKnob::on_button_release_event (GdkEventButton *ev) ArdourKnob::on_button_release_event (GdkEventButton *ev)
{ {
if ( (_grabbed_y == ev->y) && Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) { //no move, shift-click sets to default if ( (_grabbed_y == ev->y && _grabbed_x == ev->x) && Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) { //no move, shift-click sets to default
boost::shared_ptr<PBD::Controllable> c = binding_proxy.get_controllable(); boost::shared_ptr<PBD::Controllable> c = binding_proxy.get_controllable();
if (!c) return false; if (!c) return false;
c->set_value (c->normal()); c->set_value (c->normal());

1
gtk2_ardour/ardour_knob.h
View File

@ -101,6 +101,7 @@ public:
BindingProxy binding_proxy; BindingProxy binding_proxy;
bool _hovering; bool _hovering;
float _grabbed_x;
float _grabbed_y; float _grabbed_y;
float _val; // current value [0..1] float _val; // current value [0..1]