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/*
* VncView.h - abstract base for all VNC views
*
* Copyright (c) 2006-2021 Tobias Junghans <tobydox@veyon.io>
*
* This file is part of Veyon - https://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.
*
*/
#pragma once
#include <QEvent>
#include <QPixmap>
#include "KeyboardShortcutTrapper.h"
#include "VncConnection.h"
class QHoverEvent;
class QKeyEvent;
class QMouseEvent;
class QWheelEvent;
class KeyboardShortcutTrapper;
class VncConnection;
// clazy:excludeall=copyable-polymorphic
class VEYON_CORE_EXPORT VncView
{
public:
enum Modes
{
RemoteControlMode,
DemoMode,
NumModes
} ;
using Mode = Modes;
enum Shortcut
{
ShortcutCtrlAltDel,
ShortcutCtrlEscape,
ShortcutAltTab,
ShortcutAltF4,
ShortcutWinTab,
ShortcutWin,
ShortcutMenu,
ShortcutAltCtrlF1,
ShortcutCount
} ;
VncView( VncConnection* connection );
virtual ~VncView();
VncConnection* connection() const
{
return m_connection;
}
bool viewOnly() const
{
return m_viewOnly;
}
QSize scaledSize() const;
QSize effectiveFramebufferSize() const;
const QRect& viewport() const
{
return m_viewport;
}
void setViewport( const QRect& viewport )
{
m_viewport = viewport;
}
virtual void setViewOnly( bool viewOnly );
void sendShortcut( VncView::Shortcut shortcut );
protected:
template<class SubClass>
void connectUpdateFunctions( SubClass* object )
{
QObject::connect( connection(), &VncConnection::imageUpdated, object,
[this](int x, int y, int w, int h) { updateImage( x, y, w, h ); } );
QObject::connect( connection(), &VncConnection::framebufferSizeChanged, object,
[this]( int w, int h ) { updateFramebufferSize( w, h ); } );
QObject::connect( connection(), &VncConnection::cursorPosChanged, object,
[this]( int x, int y ) { updateCursorPos( x, y ); } );
QObject::connect( connection(), &VncConnection::cursorShapeUpdated, object,
[this]( const QPixmap& cursorShape, int xh, int yh ) { updateCursorShape( cursorShape, xh, yh ); } );
}
virtual void updateView( int x, int y, int w, int h ) = 0;
virtual QSize viewSize() const = 0;
virtual void setViewCursor( const QCursor& cursor ) = 0;
virtual void updateCursorPos( int x, int y );
virtual void updateCursorShape( const QPixmap& cursorShape, int xh, int yh );
virtual void updateFramebufferSize( int w, int h );
virtual void updateImage( int x, int y, int w, int h );
void unpressModifiers();
void handleShortcut( KeyboardShortcutTrapper::Shortcut shortcut );
bool handleEvent( QEvent* handleEvent );
virtual void hoverEventHandler( QHoverEvent* event );
virtual void keyEventHandler( QKeyEvent* event );
virtual void mouseEventHandler( QMouseEvent* event );
virtual void wheelEventHandler( QWheelEvent* event );
bool isScaledView() const;
QPixmap cursorShape() const
{
return m_cursorShape;
}
QPoint cursorPos() const
{
return m_cursorPos;
}
QPoint cursorHot() const
{
return m_cursorHot;
}
qreal scaleFactor() const;
QPoint mapToFramebuffer( QPoint pos );
QRect mapFromFramebuffer( QRect rect );
void updateLocalCursor();
private:
void updatePaintedCursor();
void pressKey( unsigned int key );
void unpressKey( unsigned int key );
VncConnection* m_connection{nullptr};
QPixmap m_cursorShape{};
QPoint m_cursorPos{0, 0};
QPoint m_cursorHot{0, 0};
QSize m_framebufferSize{0, 0};
bool m_viewOnly{true};
QRect m_viewport{};
uint m_buttonMask{0};
QMap<unsigned int, bool> m_mods;
KeyboardShortcutTrapper* m_keyboardShortcutTrapper{nullptr};
} ;
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