timeline.h

#ifndef TIMELINE_H
#define TIMELINE_H
 
#include <QWidget>
#include <QSpinBox>
#include <QScreen>
#include "slideablelabel.h"
#include "timelinelabel.h"
#include "ui_timeline.h"
 
#define MARKER_COLOR Qt::black
#define BOUNDARY_COLOR Qt::black
 
namespace Ui {
class Timeline;
}
 
class Timeline : public QWidget
{
    Q_OBJECT
 
public:
    explicit Timeline(QWidget *parent = nullptr);
    ~Timeline();
 
    void updateKeyframes(const std::vector<uint> &newKeyframes);
 
    void setFrames(const std::vector<uint> &keyframes, uint frameCount);
 
    uint selectedFrame();
 
    void selectFrame(uint index);
 
    void updateHighlighterWidth();
 
    void resizeEvent(QResizeEvent *ev) override;
 
    void setEnabled(bool enable);
 
    QPoint getBoundaries();
 
    void setBoundaries(QPoint boundaries);
 
    void resetBoundaries();
 
signals:
    void sig_selectedChanged(uint index);
    void sig_boundariesChanged(QPoint boundaries);
 
private slots:
    // triggered by SlideableLabels mouseMoved signal
    void highlighterMoved(int xMovement);
    void markerMoved(int xMovement);
    void sbIndexChanged(int index);
    void boundaryMoved(int xMovement, SlideableLabel *boundaryLabel);
    // triggered by click on Timeline
    void slot_totalTimelineClicked(QPoint pos);
    void slot_zoomTimelineClicked(QPoint pos);
    void zoomChanged();
 
public slots:
    void resize();
 
private:
    Ui::Timeline *ui;
    // ui elements
    SlideableLabel *m_highlighter = 0; // used for highlighting the zoomed area
    SlideableLabel *m_marker = 0; // used to mark the currently shown frame
    TimelineLabel *m_zoomTimeline = 0; // displays a only highlighted frames
    TimelineLabel *m_totalTimeline = 0; // displays every frame
    SlideableLabel *m_startBoundaryLabel = 0; // marks the start boundary of the corpped frames
    SlideableLabel *m_endBoundaryLabel = 0; // marks the end boundary of the cropped frames
    QDoubleSpinBox *m_zoomSpinBox = 0; // adjust width of the highlighter (=> zoom)
    QSpinBox *m_indexSpinBox = 0; // shows and changes current index
 
    QPointF getHighlighterRange();
    void setupSpinBoxes();
    QPixmap drawMarker(uint pixWidth, uint pixHeight, uint symbolWidth, uint symbolHeigth, uint topMargin);
 
    // cropped boundaries
    QPoint m_boundaries;
    QPixmap drawBoundary(uint pixWidth, uint pixHeight, uint symbolWidth, uint topBottomMargin, bool isStart);
    void positionBoundaries(uint startPos, uint endPos);
 
    // frame data
    std::vector<uint> m_keyframes;
    uint m_frameCount = 1;
 
    bool m_selectActive = false;
    bool m_enableWindow = false;
};
 
#endif // TIMELINE_H