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/*
* VncView.h - VNC viewer widget
*
* Copyright (c) 2006-2019 Tobias Junghans <tobydox@veyon.io>
*
* This file is part of Veyon - http://veyon.io
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program (see COPYING); if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
*/
#ifndef VNC_VIEW_H
#define VNC_VIEW_H
#include <QEvent>
#include <QPointer>
#include <QTimer>
#include <QWidget>
#include "KeyboardShortcutTrapper.h"
#include "VncConnection.h"
class ProgressWidget;
class RemoteControlWidget;
class KeyboardShortcutTrapper;
class VEYON_CORE_EXPORT VncView : public QWidget
{
Q_OBJECT
public:
enum Modes
{
RemoteControlMode,
DemoMode,
NumModes
} ;
typedef Modes Mode;
typedef enum Shortcut
{
ShortcutCtrlAltDel,
ShortcutCtrlEscape,
ShortcutAltTab,
ShortcutAltF4,
ShortcutWinTab,
ShortcutWin,
ShortcutMenu,
ShortcutAltCtrlF1,
ShortcutCount
} Shortcut;
VncView( const QString &host, int port, QWidget *parent, Mode mode );
~VncView() override;
bool isViewOnly() const
{
return m_viewOnly;
}
VncConnection* vncConnection()
{
return m_vncConn;
}
QSize scaledSize() const;
QSize framebufferSize() const
{
return m_framebufferSize;
}
QSize sizeHint() const override;
public slots:
void setViewOnly( bool viewOnly );
void sendShortcut( Shortcut shortcut );
signals:
void mouseAtBorder();
void keyEvent( unsigned int, bool );
void startConnection();
void connectionEstablished();
void sizeHintChanged();
private slots:
void handleShortcut( KeyboardShortcutTrapper::Shortcut shortcut );
void updateCursorPos( int x, int y );
void updateCursorShape( const QPixmap& cursorShape, int xh, int yh );
void updateImage( int x, int y, int w, int h );
void updateFramebufferSize( int w, int h );
void updateConnectionState();
private:
bool eventFilter( QObject* obj, QEvent* event ) override;
bool event( QEvent* event ) override;
void focusInEvent( QFocusEvent* event ) override;
void focusOutEvent( QFocusEvent* event ) override;
void paintEvent( QPaintEvent* event ) override;
void resizeEvent( QResizeEvent* event ) override;
void keyEventHandler( QKeyEvent* event );
void mouseEventHandler( QMouseEvent* event );
void wheelEventHandler( QWheelEvent* event );
void unpressModifiers();
bool isScaledView() const;
qreal scaleFactor() const;
QPoint mapToFramebuffer( QPoint pos );
QRect mapFromFramebuffer( QRect rect );
void updateLocalCursor();
void pressKey( unsigned int key );
void unpressKey( unsigned int key );
VncConnection* m_vncConn;
Mode m_mode;
QPixmap m_cursorShape;
int m_cursorX;
int m_cursorY;
QSize m_framebufferSize;
int m_cursorHotX;
int m_cursorHotY;
bool m_viewOnly;
bool m_viewOnlyFocus;
bool m_initDone;
int m_buttonMask;
QMap<unsigned int, bool> m_mods;
ProgressWidget* m_establishingConnectionWidget;
KeyboardShortcutTrapper* m_keyboardShortcutTrapper;
static constexpr int MouseBorderSignalDelay = 500;
QTimer m_mouseBorderSignalTimer;
} ;
#endif
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