#include "vncwindow.h"

Inheritance diagram for VncWindow:

Collaboration diagram for VncWindow:

Public Slots
void	open (const QString &host, int port, const QString &passwd, bool ro, bool fullscreen, const QString &caption, const int clientId, const QByteArray &rawThumb)
	Show the VNC client window and connect to the given VNC server. More...

Signals
void	running (const bool isRunning, const int clientId)

Public Member Functions
	VncWindow (QWidget *parent=0)

virtual	~VncWindow ()

Protected Slots
void	onUpdateImage (const int x, const int y, const int w, const int h)
	Triggered by imageUpdate signal from the _vncWorker thread telling that the given region of the image changed. More...

void	onProjectionStarted ()
	Triggered by _vncWorker after successfully connecting to the VNC server. More...

void	onProjectionStopped ()
	Triggered by _vncWorker when the connection to the VNC server is lost. More...

void	timer_moveToTop ()

void	deleteVncThread ()

Protected Member Functions
void	paintEvent (QPaintEvent *event)
	Called by Qt when a part of the window should be redrawn. More...

void	resizeEvent (QResizeEvent *)

void	closeEvent (QCloseEvent *e)
	Called by Qt if the window is requested to be closed. More...

void	timerEvent (QTimerEvent *event)
	Called when a Qt timer fires. More...

void	keyReleaseEvent (QKeyEvent *event)
	Called when user releases a pressed key and the window has focus. More...

Private Member Functions
void	draw (const int x, const int y, const int w, const int h)
	Draws given part of the current VNC frame buffer to the window. More...

void	terminateVncThread ()
	Terminates the vnc worker thread and stops all related timers. More...

bool	calcScaling (const QImage *remote)
	When using image scaling, calc matching pixel borders for both resolutions to prevent artifacts through bilinear scaling. More...

Private Attributes
int	_srcStepX

int	_srcStepY

int	_dstStepX

int	_dstStepY

VncThread *	_vncWorker

bool	_viewOnly

bool	_multiScreen

int	_clientId

int	_redrawTimer

int	_tcpTimeoutTimer

QPixmap	_remoteThumb

QSize	_remoteSize

QSize	_desiredSize

Detailed Description

Definition at line 25 of file vncwindow.h.

Constructor & Destructor Documentation

VncWindow::VncWindow ( QWidget * parent = 0 )

Definition at line 42 of file vncwindow.cpp.

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VncWindow::~VncWindow ( )

virtualdefault

Member Function Documentation

bool VncWindow::calcScaling ( const QImage * remote )

private

When using image scaling, calc matching pixel borders for both resolutions to prevent artifacts through bilinear scaling.

If you simply round to the nearest number when scaling, you would slightly stretch or shrink the image area, which leads to strange sub-pixel-movements of parts of the image when being updated. The values calculated here are used to determine a larger area around the area that should actually be updated, that will not cause any artifacts when scaling down/up.

Returns: whether scaling factors changed

Definition at line 147 of file vncwindow.cpp.

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void VncWindow::closeEvent ( QCloseEvent * e )

protected

Called by Qt if the window is requested to be closed.

This can either happen through code (this->close()), or a keypress (Alt-F4). As long as Qt::WA_DeleteOnClose is not set the QWidget gets just hidden and not quit. See http://qt-project.org/doc/qt-4.8/qcloseevent.html#details for more details.

Parameters

e	close event data

Definition at line 242 of file vncwindow.cpp.

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void VncWindow::deleteVncThread ( )

protectedslot

Definition at line 83 of file vncwindow.cpp.

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void VncWindow::draw	(	const int	x,
		const int	y,
		const int	w,
		const int	h
	)

private

Draws given part of the current VNC frame buffer to the window.

Parameters

x	X offset of the region to draw
y	Y offset of the region to draw
w	width of the region to draw
h	height of the region to draw

Definition at line 97 of file vncwindow.cpp.

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void VncWindow::keyReleaseEvent ( QKeyEvent * event )

protected

Called when user releases a pressed key and the window has focus.

Definition at line 379 of file vncwindow.cpp.

void VncWindow::onProjectionStarted ( )

protectedslot

Triggered by _vncWorker after successfully connecting to the VNC server.

This emits a signal that will eventually lead to the ServerConnection telling the server that we're now watching another client.

Definition at line 288 of file vncwindow.cpp.

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void VncWindow::onProjectionStopped ( )

protectedslot

Triggered by _vncWorker when the connection to the VNC server is lost.

We'll terminate the thread (detached) and close the window. A signal telling the server that we're not watching a VNC stream anymore will eventually be emited by the closeEvent.

Definition at line 305 of file vncwindow.cpp.

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void VncWindow::onUpdateImage	(	const int	x,
		const int	y,
		const int	w,
		const int	h
	)

protectedslot

Triggered by imageUpdate signal from the _vncWorker thread telling that the given region of the image changed.

Simply repaints the given area of the window. Since these are client coordinates we might have to do some scaling.

Parameters

x	X offset of the region to update
y	Y offset of the region to update
w	width of the region to update
h	height of the region to update

Definition at line 264 of file vncwindow.cpp.

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void VncWindow::open	(	const QString &	host,
		int	port,
		const QString &	passwd,
		bool	ro,
		bool	fullscreen,
		const QString &	caption,
		const int	clientId,
		const QByteArray &	rawThumb
	)

slot

Show the VNC client window and connect to the given VNC server.

Any currently active VNC client connection is signaled to terminate, and a new VNC client worker thread is created for the new connection.

Parameters

host	IP address of VNC server to connect to
port	Port of VNC server to connect to
passwd	(view only) password of VNC server to connect to
ro	currently unused
fullscreen	display VNC image in fullscreen mode
caption	caption of window (only visible if not running in fullscreen mode)
clientId	the ID of the client we're connecting to (echoed back to server, not used locally)

Definition at line 186 of file vncwindow.cpp.

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void VncWindow::paintEvent ( QPaintEvent * event )

protected

Called by Qt when a part of the window should be redrawn.

This can either be caused by Qt (or the underlying graphical subsystem), or by an explicit call to QWidget::repaint()

Parameters

event the paint event, containing data like location and size area that should be repainted

Definition at line 356 of file vncwindow.cpp.

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void VncWindow::resizeEvent ( QResizeEvent * )

inlineprotected

Definition at line 48 of file vncwindow.h.

void VncWindow::running	(	const bool	isRunning,
		const int	clientId
	)

signal

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void VncWindow::terminateVncThread ( )

private

Terminates the vnc worker thread and stops all related timers.

The thread will be signalled to stop, but we don't wait for it to actually terminate. All signals of the thread are blocked, and we nullptr our reference to it. It will finish running in a detached state and finally delete itself upon completion.

Definition at line 63 of file vncwindow.cpp.

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void VncWindow::timer_moveToTop ( )

protectedslot

Definition at line 311 of file vncwindow.cpp.

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void VncWindow::timerEvent ( QTimerEvent * event )

protected

Called when a Qt timer fires.

redrawTimer: Redraw whole viewer window.

tcpTimeoutTimer: Check if we're connected, close window if not.

Parameters

event the timer event

Definition at line 332 of file vncwindow.cpp.

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Member Data Documentation

int VncWindow::_clientId

private

Definition at line 58 of file vncwindow.h.

QSize VncWindow::_desiredSize

private

Definition at line 63 of file vncwindow.h.

int VncWindow::_dstStepX

private

Definition at line 54 of file vncwindow.h.

int VncWindow::_dstStepY

private

Definition at line 54 of file vncwindow.h.

bool VncWindow::_multiScreen

private

Definition at line 57 of file vncwindow.h.

int VncWindow::_redrawTimer

private

Definition at line 59 of file vncwindow.h.

QSize VncWindow::_remoteSize

private

Definition at line 62 of file vncwindow.h.

QPixmap VncWindow::_remoteThumb

private

Definition at line 61 of file vncwindow.h.

int VncWindow::_srcStepX

private

Definition at line 54 of file vncwindow.h.

int VncWindow::_srcStepY

private

Definition at line 54 of file vncwindow.h.

int VncWindow::_tcpTimeoutTimer

private

Definition at line 60 of file vncwindow.h.

bool VncWindow::_viewOnly

private

Definition at line 56 of file vncwindow.h.

VncThread* VncWindow::_vncWorker

private

Definition at line 55 of file vncwindow.h.

The documentation for this class was generated from the following files:

client/vnc/vncwindow.h
client/vnc/vncwindow.cpp

Public Slots

Signals

Public Member Functions

Protected Slots

Protected Member Functions

Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation