PrimaryFlightDisplay.h

#ifndef PRIMARYFLIGHTDISPLAY_H
#define PRIMARYFLIGHTDISPLAY_H

#include <QWidget>
#include <QPen>
#include "UASInterface.h"

class PrimaryFlightDisplay : public QWidget
{
    Q_OBJECT
public:
    PrimaryFlightDisplay(int width = 640, int height = 480, QWidget* parent = NULL);
    ~PrimaryFlightDisplay();

public slots:
    /** @brief Attitude from main autopilot / system state */
    void updateAttitude(UASInterface* uas, double roll, double pitch, double yaw, quint64 timestamp);
    /** @brief Attitude from one specific component / redundant autopilot */
    void updateAttitude(UASInterface* uas, int component, double roll, double pitch, double yaw, quint64 timestamp);

    void updateSpeed(UASInterface* uas, double _groundSpeed, double _airSpeed, quint64 timestamp);
    void updateAltitude(UASInterface* uas, double _altitudeAMSL, double _altitudeRelative, double _climbRate, quint64 timestamp);
    void updateNavigationControllerErrors(UASInterface* uas, double altitudeError, double speedError, double xtrackError);

    /** @brief Set the currently monitored UAS */
    //void addUAS(UASInterface* uas);
    void forgetUAS(UASInterface* uas);
    void setActiveUAS(UASInterface* uas);

protected:
    enum Layout {
        COMPASS_INTEGRATED,
        COMPASS_SEPARATED               // For a very high container. Feature panels are at bottom.
    };

    enum Style {
        NO_OVERLAYS,                    // Hzon not visible through tapes nor through feature panels. Frames with margins between.
        OVERLAY_HORIZONTAL,             // Hzon visible through tapes and (frameless) feature panels.
        OVERLAY_HSI                     // Hzon visible through everything except bottom feature panels.
    };

    void paintEvent(QPaintEvent *event);
    void resizeEvent(QResizeEvent *e);

    // from HUD.h:

    /** @brief Preferred Size */
    QSize sizeHint() const;
    /** @brief Start updating widget */
    void showEvent(QShowEvent* event);
    /** @brief Stop updating widget */
    void hideEvent(QHideEvent* event);

    // dongfang: We have no context menu. Viewonly.
    // void contextMenuEvent (QContextMenuEvent* event);

    // dongfang: What is that?
    // dongfang: OK it's for UI interaction. Presently, there is none.
    void createActions();

signals:
    void visibilityChanged(bool visible);

private:
    /*
    enum AltimeterMode {
        PRIMARY_MAIN_GPS_SUB,   // Show the primary alt. on tape and GPS as extra info
        GPS_MAIN                // Show GPS on tape and no extra info
    };