97 lines
1.9 KiB
C++
97 lines
1.9 KiB
C++
#include "timelinescaledobject.h"
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#include <cfloat>
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#include <QtMath>
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#include "common/clamp.h"
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TimelineScaledObject::TimelineScaledObject() :
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scale_(1.0),
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min_scale_(0),
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max_scale_(DBL_MAX)
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{
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}
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void TimelineScaledObject::SetTimebase(const rational &timebase)
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{
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timebase_ = timebase;
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timebase_dbl_ = timebase_.toDouble();
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TimebaseChangedEvent(timebase);
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}
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const rational &TimelineScaledObject::timebase() const
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{
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return timebase_;
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}
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const double &TimelineScaledObject::timebase_dbl() const
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{
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return timebase_dbl_;
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}
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rational TimelineScaledObject::SceneToTime(const double &x, const double &x_scale, const rational &timebase, bool round)
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{
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double unscaled_time = x / x_scale / timebase.toDouble();
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// Adjust screen point by scale and timebase
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qint64 rounded_x_mvmt;
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if (round) {
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rounded_x_mvmt = qRound64(unscaled_time);
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} else {
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rounded_x_mvmt = qFloor(unscaled_time);
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}
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// Return a time in the timebase
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return rational(rounded_x_mvmt * timebase.numerator(), timebase.denominator());
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}
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double TimelineScaledObject::TimeToScene(const rational &time)
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{
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return time.toDouble() * scale_;
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}
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rational TimelineScaledObject::SceneToTime(const double &x, bool round)
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{
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return SceneToTime(x, scale_, timebase_, round);
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}
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void TimelineScaledObject::SetMaximumScale(const double &max)
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{
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max_scale_ = max;
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if (GetScale() > max_scale_) {
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SetScale(max_scale_);
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}
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}
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void TimelineScaledObject::SetMinimumScale(const double &min)
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{
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min_scale_ = min;
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if (GetScale() < min_scale_) {
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SetScale(min_scale_);
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}
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}
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const double& TimelineScaledObject::GetScale() const
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{
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return scale_;
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}
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void TimelineScaledObject::SetScale(const double& scale)
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{
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Q_ASSERT(scale > 0);
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scale_ = clamp(scale, min_scale_, max_scale_);
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ScaleChangedEvent(scale_);
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}
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TimelineScaledWidget::TimelineScaledWidget(QWidget *parent) :
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QWidget(parent)
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{
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}
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