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shuttle control: make scroll events step by precisely 1 of the current units

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git-svn-id: svn://localhost/ardour2/branches/3.0@9801 d708f5d6-7413-0410-9779-e7cbd77b26cf
This commit is contained in:
Paul Davis 2011-07-07 16:49:10 +00:00
parent 5946e84fc5
commit e6a515578e
1 changed files with 26 additions and 4 deletions
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30
gtk2_ardour/shuttle_control.cc
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@ -304,20 +304,42 @@ ShuttleControl::on_scroll_event (GdkEventScroll* ev)
return true;
}
bool semis = (Config->get_shuttle_units() == Semitones);
switch (ev->direction) {
case GDK_SCROLL_UP:
case GDK_SCROLL_RIGHT:
shuttle_fract += 0.005;
if (semis) {
if (shuttle_fract == 0) {
shuttle_fract = semitones_as_fract (1, false);
} else {
bool rev;
int st = fract_as_semitones (shuttle_fract, rev);
shuttle_fract = semitones_as_fract (st + 1, rev);
}
} else {
shuttle_fract += 0.00125;
}
break;
case GDK_SCROLL_DOWN:
case GDK_SCROLL_LEFT:
shuttle_fract -= 0.005;
if (semis) {
if (shuttle_fract == 0) {
shuttle_fract = semitones_as_fract (1, true);
} else {
bool rev;
int st = fract_as_semitones (shuttle_fract, rev);
shuttle_fract = semitones_as_fract (st - 1, rev);
}
} else {
shuttle_fract -= 0.00125;
}
break;
default:
return false;
}
if (Config->get_shuttle_units() == Semitones) {
if (semis) {
float lower_side_of_dead_zone = semitones_as_fract (-24, true);
float upper_side_of_dead_zone = semitones_as_fract (-24, false);