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/***
Olive - Non-Linear Video Editor
Copyright (C) 2019 Olive Team
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
***/
#include "timelinescaledobject.h"
#include <cfloat>
#include <QtMath>
#include "common/clamp.h"
OLIVE_NAMESPACE_ENTER
const int TimelineScaledObject::kCalculateDimensionsPadding = 10;
TimelineScaledObject::TimelineScaledObject() :
scale_(1.0),
min_scale_(0),
max_scale_(DBL_MAX)
{
}
void TimelineScaledObject::SetTimebase(const rational &timebase)
{
timebase_ = timebase;
timebase_dbl_ = timebase_.toDouble();
TimebaseChangedEvent(timebase);
}
const rational &TimelineScaledObject::timebase() const
{
return timebase_;
}
const double &TimelineScaledObject::timebase_dbl() const
{
return timebase_dbl_;
}
rational TimelineScaledObject::SceneToTime(const double &x, const double &x_scale, const rational &timebase, bool round)
{
double unscaled_time = x / x_scale / timebase.toDouble();
// Adjust screen point by scale and timebase
qint64 rounded_x_mvmt;
if (round) {
rounded_x_mvmt = qRound64(unscaled_time);
} else {
rounded_x_mvmt = qFloor(unscaled_time);
}
// Return a time in the timebase
return rational(rounded_x_mvmt * timebase.numerator(), timebase.denominator());
}
double TimelineScaledObject::TimeToScene(const rational &time)
{
return time.toDouble() * scale_;
}
rational TimelineScaledObject::SceneToTime(const double &x, bool round)
{
return SceneToTime(x, scale_, timebase_, round);
}
void TimelineScaledObject::SetMaximumScale(const double &max)
{
max_scale_ = max;
if (GetScale() > max_scale_) {
SetScale(max_scale_);
}
}
void TimelineScaledObject::SetMinimumScale(const double &min)
{
min_scale_ = min;
if (GetScale() < min_scale_) {
SetScale(min_scale_);
}
}
const double& TimelineScaledObject::GetScale() const
{
return scale_;
}
void TimelineScaledObject::SetScale(const double& scale)
{
Q_ASSERT(scale > 0);
scale_ = clamp(scale, min_scale_, max_scale_);
ScaleChangedEvent(scale_);
}
void TimelineScaledObject::SetScaleFromDimensions(double viewport_width, double content_width)
{
SetScale(CalculateScaleFromDimensions(viewport_width, content_width));
}
double TimelineScaledObject::CalculateScaleFromDimensions(double viewport_sz, double content_sz)
{
return static_cast<double>(viewport_sz / kCalculateDimensionsPadding * (kCalculateDimensionsPadding-1)) / static_cast<double>(content_sz);
}
double TimelineScaledObject::CalculatePaddingFromDimensionScale(double viewport_sz)
{
return (viewport_sz / (kCalculateDimensionsPadding * 2));
}
TimelineScaledWidget::TimelineScaledWidget(QWidget *parent) :
QWidget(parent)
{
}
OLIVE_NAMESPACE_EXIT
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