various: moved more to core lib

app/widget/timebased/timebasedwidget.cpp

@@ -153,7 +153,7 @@ void TimeBasedWidget::UpdateMaximumScroll()
   rational length = (viewer_node_) ? viewer_node_->GetLength() : 0;
 
   if (auto_max_scrollbar_) {
-    scrollbar_->setMaximum(qMax(0, qCeil(TimeToScene(length)) - width()));
+    scrollbar_->setMaximum(std::max(0, int(std::ceil(TimeToScene(length)) - width())));
   }
 
   foreach (TimeBasedView* base, timeline_views_) {

app/widget/timebased/timescaledobject.cpp

@@ -24,7 +24,6 @@
 #include <QtMath>
 
 #include "audio/audiovisualwaveform.h"
-#include "common/clamp.h"
 
 namespace olive {
 
@@ -124,7 +123,7 @@ void TimeScaledObject::SetScale(const double& scale)
 {
   Q_ASSERT(scale > 0);
 
-  scale_ = clamp(scale, min_scale_, max_scale_);
+  scale_ = std::clamp(scale, min_scale_, max_scale_);
 
   ScaleChangedEvent(scale_);
 }