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mixer left/right: snap to track

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This commit is contained in:
Robin Gareus 2016-10-14 22:58:59 +02:00
parent a1a1112998
commit 4251747760
1 changed files with 33 additions and 4 deletions
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37
gtk2_ardour/mixer_ui.cc
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@ -2044,8 +2044,23 @@ Mixer_UI::scroll_left ()
{
if (!scroller.get_hscrollbar()) return;
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()));
int sc_w = scroller.get_width();
int sp_w = strip_packer.get_width();
if (sp_w <= sc_w) {
return;
}
int lp = adj->get_value();
int lm = 0;
using namespace Gtk::Box_Helpers;
const BoxList& strips = strip_packer.children();
for (BoxList::const_iterator i = strips.begin(); i != strips.end(); ++i) {
lm += i->get_widget()->get_width ();
if (lm >= lp) {
lm -= i->get_widget()->get_width ();
break;
}
}
scroller.get_hscrollbar()->set_value (max (adj->get_lower(), min (adj->get_upper(), lm - 1.0)));
}
void
@ -2053,8 +2068,22 @@ Mixer_UI::scroll_right ()
{
if (!scroller.get_hscrollbar()) return;
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()));
int sc_w = scroller.get_width();
int sp_w = strip_packer.get_width();
if (sp_w <= sc_w) {
return;
}
int lp = adj->get_value();
int lm = 0;
using namespace Gtk::Box_Helpers;
const BoxList& strips = strip_packer.children();
for (BoxList::const_iterator i = strips.begin(); i != strips.end(); ++i) {
lm += i->get_widget()->get_width ();
if (lm > lp + 1) {
break;
}
}
scroller.get_hscrollbar()->set_value (max (adj->get_lower(), min (adj->get_upper(), lm - 1.0)));
}
bool