95 lines
2.4 KiB
C++
95 lines
2.4 KiB
C++
/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2022 Olive Team
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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***/
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#ifndef TIMELINESCALEDOBJECT_H
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#define TIMELINESCALEDOBJECT_H
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#include <QWidget>
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#include "common/rational.h"
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#include "node/block/block.h"
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namespace olive {
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/**
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* @brief Provides base functionality for any object that uses time and scale
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*/
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class TimeScaledObject
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{
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public:
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TimeScaledObject();
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virtual ~TimeScaledObject() = default;
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void SetTimebase(const rational &timebase);
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const rational& timebase() const;
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const double& timebase_dbl() const;
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static rational SceneToTime(const double &x, const double& x_scale, const rational& timebase, bool round = false);
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static rational SceneToTimeNoGrid(const double &x, const double& x_scale);
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const double& GetScale() const;
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const double &GetMaximumScale() const { return max_scale_; }
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void SetScale(const double& scale);
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void SetScaleFromDimensions(double viewport_width, double content_width);
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static double CalculateScaleFromDimensions(double viewport_sz, double content_sz);
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static double CalculatePaddingFromDimensionScale(double viewport_sz);
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double TimeToScene(const rational& time) const;
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rational SceneToTime(const double &x, bool round = false) const;
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rational SceneToTimeNoGrid(const double &x) const;
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protected:
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virtual void TimebaseChangedEvent(const rational&){}
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virtual void ScaleChangedEvent(const double&){}
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void SetMaximumScale(const double& max);
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void SetMinimumScale(const double& min);
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private:
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rational timebase_;
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double timebase_dbl_;
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double scale_;
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double min_scale_;
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double max_scale_;
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static const int kCalculateDimensionsPadding;
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};
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class TimelineScaledWidget : public QWidget, public TimeScaledObject
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{
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Q_OBJECT
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public:
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TimelineScaledWidget(QWidget* parent = nullptr);
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};
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}
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#endif // TIMELINESCALEDOBJECT_H
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