FrmViewer.h

// Author: Kang Lin <kl222@126.com>
 
#ifndef FRMVIEWER_H
#define FRMVIEWER_H
 
#pragma once
 
#include <QWidget>
#include <QSettings>
#include <QMutex>
#include <QImage>
#include <QTimer>
#include <QSharedPointer>
#include "plugin_export.h"
 
#ifdef USE_FROM_OPENGL
 
    #include "FrmViewerOpenGL.h"
    #define CFrmViewer CFrmViewerOpenGL
 
#else
 
class CRecordVideoThread;
class QTouchEvent;
class QGestureEvent;

class PLUGIN_EXPORT CFrmViewer : public QWidget
{
    Q_OBJECT
    Q_PROPERTY(double ZoomFactor READ GetZoomFactor WRITE slotSetZoomFactor)
 
public:
    explicit CFrmViewer(QWidget *parent = nullptr);
    virtual ~CFrmViewer() override;
    
    enum class ADAPT_WINDOWS {
        Disable = 0,                  
        Auto = 1,
        Original = 2,                 
        OriginalCenter = 3,           
        Zoom = 4,                     
        ZoomToWindow = 5,             
        KeepAspectRationToWindow = 6, 
    };
    Q_ENUM(ADAPT_WINDOWS)
    ADAPT_WINDOWS GetAdaptWindows();

    double GetZoomFactor() const;
 
    QSize GetDesktopSize();
 
    enum LED_STATE{
        Unknown = -1,
        ScrollLock = 1,
        NumLock = 1 << 1,
        CapsLock = 1 << 2,
    };
    Q_ENUM(LED_STATE)
 
public Q_SLOTS:
    void slotSetAdaptWindows(CFrmViewer::ADAPT_WINDOWS aw = ADAPT_WINDOWS::Original);
    int slotSetZoomFactor(double newZoomFactor);
 
    /*================== Internal calls ==================*/
    void slotSetDesktopSize(int width, int height);
    void slotSetName(const QString& szName);
    void slotUpdateRect(const QRect& r, const QImage& image);
    void slotUpdateRect(const QImage& image);
    void slotUpdateCursor(const QCursor& cursor);
    void slotUpdateCursorPosition(const QPoint& pos);
    void slotUpdateLedState(unsigned int state);
    void slotRunning();
    void slotEnableInputMethod(bool bEnable);

    Q_INVOKABLE int OnFullScreen(bool bFull);
 
Q_SIGNALS:
    void sigMousePressEvent(QMouseEvent* event, QPoint pos);
    void sigMouseReleaseEvent(QMouseEvent* event, QPoint pos);
    void sigMouseMoveEvent(QMouseEvent* event, QPoint pos);
    void sigMouseMoveEvent(QMouseEvent* event);
    void sigWheelEvent(QWheelEvent *event, QPoint pos);
    void sigKeyPressEvent(QKeyEvent *event);
    void sigKeyReleaseEvent(QKeyEvent *event);
    void sigInputMethodEvent(QInputMethodEvent *event);
 
    // Please use CConnecter::sigServerName
    void sigServerName(const QString &szName);

    void sigViewerFocusIn(QWidget* pView);
 
    // QWidget interface
protected:
    virtual bool event(QEvent *event) override;
    virtual void paintEvent(QPaintEvent *event) override;
 
    virtual void focusInEvent(QFocusEvent *event) override;
    virtual void focusOutEvent(QFocusEvent *event) override;
 
    virtual void mousePressEvent(QMouseEvent *event) override;
    virtual void mouseReleaseEvent(QMouseEvent *event) override;
    virtual void mouseMoveEvent(QMouseEvent *event) override;
    virtual void wheelEvent(QWheelEvent *event) override;
    virtual void keyPressEvent(QKeyEvent *event) override;
    virtual void keyReleaseEvent(QKeyEvent *event) override;
    virtual void inputMethodEvent(QInputMethodEvent *event) override;
    virtual QVariant inputMethodQuery( Qt::InputMethodQuery query ) const override;
 
    virtual bool touchEvent(QTouchEvent* event);
    virtual bool gestureEvent(QGestureEvent* event);
 
private:
    QImage m_Desktop;
    QSize m_DesktopSize;
 
    ADAPT_WINDOWS m_AdaptWindows;
    double m_dbZoomFactor;
 
    int ReSize(int width, int height);
    void paintDesktop();
    int PointToRemote(const QPointF &inPos, QPointF &outPos);
    int PointFromRemote(const QPointF &inPos, QPointF &outPos);
    QRectF GetAspectRationRect();
 
public:
    virtual QImage GrabImage(int x = 0, int y = 0, int w = -1, int h = -1);
 
public Q_SLOTS:
    void slotRecordVideo(bool bRecord, qreal nRate = 0);
    void slotRecordVideo();
Q_SIGNALS:
    void sigRecordVideo(const QImage& img);
private:
    QTimer m_TimerRecordVideo;
    bool m_bRecordVideo;
};
 
#endif // #ifdef USE_FROM_OPENGL
 
#endif // FRMVIEWER_H