{

Q_OBJECT

public:

explicit TimelineEventsWidget(QWidget *parent = 0);

// getters

inline double cursor() const { return mCursor; }

inline const Selection& selection() const { return mSelection; }

protected:

double pxPerSecond() const;

void paintEvent(QPaintEvent* ev) /* override */;

void mousePressEvent(QMouseEvent* ev) /* override */;

void mouseMoveEvent(QMouseEvent* ev) /* override */;

void mouseReleaseEvent(QMouseEvent* ev) /* override */;

bool event(QEvent* event) /* override */;

// void contextMenuEvent(QContextMenuEvent* ev) /* override */;

// hack so that clicking to gain focus doesn't affect selection

void focusInEvent(QFocusEvent* ev) /* override */;

void focusOutEvent(QFocusEvent* ev) /* override */;

signals:

void singleClicked(double time);

void selectionChanged(const Selection& selection);

void focusGained();

void focusLost();

public slots:

void setEventSource(EventList* events);

void setViewport(double startTime, double length);

void setCursor(double time);

void setSnapInterval(double interval); // in seconds

private:

float pxAtTime(double time) const;

double timeAtCursor(QMouseEvent* ev) const;

int eventPaintRow(const std::shared_ptr<TimelineEvent>& event) const;

QRectF eventPaintRect(const std::shared_ptr<TimelineEvent>& event) const;

std::shared_ptr<TimelineEvent> eventAtPos(const QPointF& pos);

EventList* mEvents;

double mCursor;

double mViewOffset;

double mViewLength;

Selection mSelection;

bool mHadSelection;

double mSnapInterval;

// hack so that clicking to gain focus doesn't affect selection

bool mIgnoreNextClick;