VuoPortPopover.hh

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#pragma once
 
#include <dispatch/dispatch.h>
#include <VuoImageResize.h>
class VuoEditorComposition;
class VuoPort;
 
class VuoPortPopover : public QTextBrowser
{
    Q_OBJECT
public:
    explicit VuoPortPopover(VuoPort *port, VuoEditorComposition *composition, QWidget *parent=0);
    ~VuoPortPopover();
 
    // Style
    bool getDetached();
    void detach();
 
signals:
    void popoverClosedForPort(string portID); 
    void popoverDetachedFromPort(string portID); 
    void popoverResized(); 
 
public slots:
    void setWindowLevel(bool top);
    void setWindowLevelAndVisibility(bool top);
    void setCompositionRunning(bool running, bool resetDataValue=true);
    void updateTextAndResize();
    void updateDataValueImmediately(QString value);
    void updateLastEventTimeAndDataValue(bool event, bool data, QString value);
    void incrementDroppedEventCount();
 
protected:
    void mousePressEvent(QMouseEvent *event);
    void mouseMoveEvent(QMouseEvent * event);
    void mouseReleaseEvent(QMouseEvent * event);
    void closeEvent(QCloseEvent *event);
    void resizeEvent(QResizeEvent *event);
 
private slots:
    void updateStyle();
    void helpButtonClicked();
 
private:
    static const int maxPopoverContentWidth;
    static const int maxPopoverImageWidth;
    static const int maxPopoverImageHeight;
    static const qreal minTextUpdateInterval;
    static const int eventHistoryMaxSize;
    static const int noEventObserved;
    static const int noDisplayableEventTime;
    static const string noDataValueObserved;
    static const string noDisplayableDataValue;
 
    // Port attributes affecting text contents
    string portID;
    VuoEditorComposition *composition;
    string cachedDataValue;
    qint64 timeOfLastEvent;  
    qint64 timeOfLastUpdate;  
    bool compositionRunning;
    QQueue<qint64> eventHistory;
    unsigned int eventCount;
    unsigned int droppedEventCount;
    bool allEventsBlocked;
    bool someEventsBlocked;
 
    // Style
    bool isDetached;
 
    QTimer *refreshTextTimer;
    dispatch_queue_t popoverTextQueue;
 
    VuoImageResize imageResize;
    QString mostRecentImage;
 
    void updateTextAndResizeThreadUnsafe();
    void updateTextThreadUnsafe(bool includeEventIndicator=false);
    QString generateImageCode();
    void resetRefreshTextInterval();
    bool refreshTextTimerFiredSinceLastReset;
    QString generatePortPopoverText(bool includeEventIndicator=false);
 
    static double getEventIntervalMean(QQueue<qint64> timestamps);
    static double getEventIntervalStdDev(QQueue<qint64> timestamps);
 
    // User interaction
    bool dragInProgress;
    QPoint positionBeforeDrag;
};