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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/>.
***/
#ifndef BLOCK_H
#define BLOCK_H
#include "node/node.h"
#include "timeline/timelinecommon.h"
OLIVE_NAMESPACE_ENTER
/**
* @brief A Node that represents a block of time, also displayable on a Timeline
*/
class Block : public Node
{
Q_OBJECT
public:
Block();
enum Type {
kClip,
kGap,
kTransition
};
virtual Type type() const = 0;
virtual QList<CategoryID> Category() const override;
const rational& in() const;
const rational& out() const;
void set_in(const rational& in);
void set_out(const rational& out);
rational length() const;
void set_length_and_media_out(const rational &length);
void set_length_and_media_in(const rational &length);
Block* previous();
Block* next();
void set_previous(Block* previous);
void set_next(Block* next);
rational media_in() const;
void set_media_in(const rational& media_in);
rational media_out() const;
rational speed() const;
void set_speed(const rational& speed);
bool is_still() const;
bool is_reversed() const;
bool is_enabled() const;
void set_enabled(bool e);
static bool Link(Block* a, Block* b);
static void Link(const QList<Block*>& blocks);
static bool Unlink(Block* a, Block* b);
static void Unlink(const QList<Block*>& blocks);
static bool AreLinked(Block* a, Block* b);
const QVector<Block*>& linked_clips();
bool HasLinks();
virtual bool IsBlock() const override;
virtual void Retranslate() override;
NodeInput* length_input() const;
NodeInput* media_in_input() const;
NodeInput* speed_input() const;
virtual void Hash(QCryptographicHash &hash, const rational &time) const override;
public slots:
signals:
/**
* @brief Signal emitted when this Block is refreshed
*
* Can be used as essentially a "changed" signal for UI widgets to know when to update their views
*/
void Refreshed();
void LengthChanged(const rational& length);
void LinksChanged();
void EnabledChanged();
protected:
rational SequenceToMediaTime(const rational& sequence_time) const;
rational MediaToSequenceTime(const rational& media_time) const;
virtual void LoadInternal(QXmlStreamReader* reader, XMLNodeData& xml_node_data) override;
virtual void SaveInternal(QXmlStreamWriter* writer) const override;
virtual QList<NodeInput*> GetInputsToHash() const override;
virtual void LengthChangedEvent(const rational& old_length,
const rational& new_length,
const Timeline::MovementMode& mode);
Block* previous_;
Block* next_;
private:
void set_length_internal(const rational &length);
NodeInput* length_input_;
NodeInput* media_in_input_;
NodeInput* speed_input_;
NodeInput* enabled_input_;
rational in_point_;
rational out_point_;
QVector<Block*> linked_clips_;
private slots:
void LengthInputChanged();
};
OLIVE_NAMESPACE_EXIT
#endif // BLOCK_H
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