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timebasedwidget: move center scroll functionality to base class so widgets like

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This commit is contained in:
itsmattkc
2020-02-17 15:21:10 +11:00
parent 139127ed3c
commit 6eeae7b15e
7 changed files with 40 additions and 28 deletions
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app/widget/timebased/timebased.cpp
+16 -2
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@@ -13,6 +13,15 @@ TimeBasedWidget::TimeBasedWidget(bool ruler_text_visible, bool ruler_cache_statu
scrollbar_ = new QScrollBar(Qt::Horizontal, this);
}
void TimeBasedWidget::SetScaleAndCenterOnPlayhead(const double &scale)
{
SetScale(scale);
// Zoom towards the playhead
// (using a hacky singleShot so the scroll occurs after the scene and its scrollbars have updated)
QTimer::singleShot(0, this, &TimeBasedWidget::CenterScrollOnPlayhead);
}
rational TimeBasedWidget::GetTime() const
{
return Timecode::timestamp_to_time(ruler()->GetTime(), timebase());
@@ -118,12 +127,12 @@ void TimeBasedWidget::SetScale(const double &scale)
void TimeBasedWidget::ZoomIn()
{
SetScale(GetScale() * 2);
SetScaleAndCenterOnPlayhead(GetScale() * 2);
}
void TimeBasedWidget::ZoomOut()
{
SetScale(GetScale() * 0.5);
SetScaleAndCenterOnPlayhead(GetScale() * 0.5);
}
void TimeBasedWidget::GoToPrevCut()
@@ -222,3 +231,8 @@ void TimeBasedWidget::SetTimeAndSignal(const int64_t &t)
SetTime(t);
emit TimeChanged(t);
}
void TimeBasedWidget::CenterScrollOnPlayhead()
{
scrollbar_->setValue(qRound(TimeToScene(Timecode::timestamp_to_time(ruler_->GetTime(), timebase()))) - scrollbar_->width()/2);
}