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catch hscroll in pianoroll appropriately

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Some thought might be put into thinking about why/whether EditingContext
ought to do this instead, since Editor does almost the same thing, but
without using the horizontal_adjustment owned by EditingContext
This commit is contained in:
Paul Davis 2025-05-02 09:40:38 -06:00
parent e348607976
commit 130cfd2e08
2 changed files with 11 additions and 0 deletions
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10
gtk2_ardour/pianoroll.cc
View file

@ -265,9 +265,19 @@ Pianoroll::add_multi_controller_item (Gtk::Menu_Helpers::MenuList&,
}
void
Pianoroll::scrolled ()
{
pending_visual_change.add (VisualChange::TimeOrigin);
pending_visual_change.time_origin = horizontal_adjustment.get_value() * samples_per_pixel;
ensure_visual_change_idle_handler ();
}
void
Pianoroll::build_lower_toolbar ()
{
horizontal_adjustment.signal_value_changed().connect (sigc::mem_fun (*this, &Pianoroll::scrolled));
ArdourButton::Element elements = ArdourButton::Element (ArdourButton::Text|ArdourButton::Indicator|ArdourButton::Edge|ArdourButton::Body);
_canvas_hscrollbar = manage (new Gtk::HScrollbar (horizontal_adjustment));

1
gtk2_ardour/pianoroll.h
View file

@ -346,4 +346,5 @@ class Pianoroll : public CueEditor
bool bbt_ruler_event (GdkEvent*);
void ruler_locate (GdkEventButton*);
void scrolled ();
};