#ifndef TRANSITION_H
#define TRANSITION_H

#include "effect.h"

#define TA_NO_TRANSITION 0
#define TA_OPENING_TRANSITION 1
#define TA_CLOSING_TRANSITION 2

#define TRANSITION_INTERNAL_CROSSDISSOLVE 0
#define TRANSITION_INTERNAL_LINEARFADE 1
#define TRANSITION_INTERNAL_EXPONENTIALFADE	2
#define TRANSITION_INTERNAL_LOGARITHMICFADE 3
#define TRANSITION_INTERNAL_CUBE 4
#define TRANSITION_INTERNAL_COUNT 5

int create_transition(Clip* c, Clip* s, const EffectMeta* em, long length = -1);

class Transition : public Effect {
	Q_OBJECT
public:
	Transition(Clip* c, Clip* s, const EffectMeta* em);
	int copy(Clip* c, Clip* s);
	Clip* secondary_clip;
	void set_length(long l);
	long get_true_length();
	long get_length();
private slots:
	void set_length_from_slider();
private:
	long length; // used only for transitions
	EffectField* length_field;
};

#endif // TRANSITION_H