ardour/livetrax
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Touch Support for Ardour Fader

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This commit is contained in:
Robin Gareus 2024-10-02 00:17:07 +02:00
parent 24b916d125
commit 000a1aaa46
Signed by: rgareus
GPG Key ID: A090BCE02CF57F04
4 changed files with 42 additions and 0 deletions
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14
libs/widgets/ardour_fader.cc
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@ -61,6 +61,8 @@ ArdourFader::ArdourFader (Gtk::Adjustment& adj, int orientation, int fader_lengt
{
update_unity_position ();
add_events (Gdk::TOUCH_UPDATE_MASK);
if (_orien == VERT) {
CairoWidget::set_size_request(_girth, _span);
} else {
@ -464,6 +466,18 @@ ArdourFader::on_motion_notify_event (GdkEventMotion* ev)
return true;
}
bool
ArdourFader::on_touch_update_event (GdkEventTouch* ev)
{
GdkEventMotion mev;
mev.window = ev->window;
mev.time = ev->time;
mev.x = ev->x;
mev.y = ev->y;
mev.state = 0;
return ArdourFader::on_motion_notify_event (&mev);
}
/** @return pixel offset of the current value from the right or bottom of the fader */
int
ArdourFader::display_span ()

25
libs/widgets/fader_widget.cc
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@ -41,6 +41,8 @@ FaderWidget::FaderWidget (Gtk::Adjustment& adj, int orien)
| Gdk::SCROLL_MASK
| Gdk::ENTER_NOTIFY_MASK
| Gdk::LEAVE_NOTIFY_MASK
| Gdk::TOUCH_BEGIN_MASK
| Gdk::TOUCH_END_MASK
);
_adjustment.signal_value_changed().connect (mem_fun (*this, &FaderWidget::adjustment_changed));
@ -100,6 +102,29 @@ FaderWidget::on_button_press_event (GdkEventButton* ev)
return (_tweaks & NoButtonForward) ? true : false;
}
bool
FaderWidget::on_touch_begin_event (GdkEventTouch *ev)
{
StartGesture (0);
_grab_loc = (_orien == VERT) ? ev->y : ev->x;
_grab_start = (_orien == VERT) ? ev->y : ev->x;
_grab_window = ev->window;
_dragging = true;
return true;
}
bool
FaderWidget::on_touch_end_event (GdkEventTouch *ev)
{
if (!_dragging) {
return true;
}
_dragging = false;
StopGesture (0);
return true;
}
bool
FaderWidget::on_enter_notify_event (GdkEventCrossing*)
{

1
libs/widgets/widgets/ardour_fader.h
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@ -55,6 +55,7 @@ protected:
void render (Cairo::RefPtr<Cairo::Context> const&, cairo_rectangle_t*);
bool on_motion_notify_event (GdkEventMotion*);
bool on_touch_update_event (GdkEventTouch*);
void on_state_changed (Gtk::StateType);
void on_style_changed (const Glib::RefPtr<Gtk::Style>&);

2
libs/widgets/widgets/fader_widget.h
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@ -62,6 +62,8 @@ public:
protected:
bool on_button_press_event (GdkEventButton*);
bool on_button_release_event (GdkEventButton*);
bool on_touch_begin_event (GdkEventTouch*);
bool on_touch_end_event (GdkEventTouch*);
bool on_enter_notify_event (GdkEventCrossing* ev);
bool on_leave_notify_event (GdkEventCrossing* ev);
bool on_scroll_event (GdkEventScroll* ev);