diff options
Diffstat (limited to 'gtk2_ardour/mixer_ui.cc')
| -rw-r--r-- | gtk2_ardour/mixer_ui.cc | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/gtk2_ardour/mixer_ui.cc b/gtk2_ardour/mixer_ui.cc index dbc61f4308..0d3f42c1d5 100644 --- a/gtk2_ardour/mixer_ui.cc +++ b/gtk2_ardour/mixer_ui.cc @@ -1459,10 +1459,38 @@ Mixer_UI::pane_allocation_handler (Allocation&, Gtk::Paned* which) } } } +void +Mixer_UI::scroll_left () +{ + Adjustment* adj = scroller.get_hscrollbar()->get_adjustment(); + /* stupid GTK: can't rely on clamping across versions */ + scroller.get_hscrollbar()->set_value (max (adj->get_lower(), adj->get_value() - adj->get_step_increment())); +} + +void +Mixer_UI::scroll_right () +{ + Adjustment* adj = scroller.get_hscrollbar()->get_adjustment(); + /* stupid GTK: can't rely on clamping across versions */ + scroller.get_hscrollbar()->set_value (min (adj->get_upper(), adj->get_value() + adj->get_step_increment())); +} bool Mixer_UI::on_key_press_event (GdkEventKey* ev) { + switch (ev->keyval) { + case GDK_Left: + scroll_left (); + return true; + + case GDK_Right: + scroll_right (); + return true; + + default: + break; + } + return key_press_focus_accelerator_handler (*this, ev); } @@ -1473,6 +1501,37 @@ Mixer_UI::on_key_release_event (GdkEventKey* ev) // return key_press_focus_accelerator_handler (*this, ev); } + +bool +Mixer_UI::on_scroll_event (GdkEventScroll* ev) +{ + switch (ev->direction) { + case GDK_SCROLL_LEFT: + scroll_left (); + return true; + case GDK_SCROLL_UP: + if (ev->state & Keyboard::TertiaryModifier) { + scroll_left (); + return true; + } + return false; + + case GDK_SCROLL_RIGHT: + scroll_right (); + return true; + + case GDK_SCROLL_DOWN: + if (ev->state & Keyboard::TertiaryModifier) { + scroll_right (); + return true; + } + return false; + } + + return false; +} + + void Mixer_UI::parameter_changed (string const & p) { |