#include "mainwindow.h"

Inheritance diagram for MainWindow:

Collaboration diagram for MainWindow:

Public Member Functions
	MainWindow (QWidget *parent=nullptr)
	Initialize MainWindow and ListenServer. More...

	~MainWindow () override

QRect	calcFrameGeometry (ConnectionFrame *frame) const

Protected Slots
void	disableButtons ()
	DisableButtons. More...

void	enableButtons ()
	EnableButtons. More...

void	clientCountChanged ()
	this function determines if the number of clients in exam mode comprise more than 50%. More...

void	onSessionNameClick ()
	Show session name, after it was clicked on. More...

void	onSessionNameUpdate ()
	Update session name. More...

void	onDeleteClient ()

void	onButtonLock (bool checked)
	Handle button to lock or unlock screens of client(s). More...

void	onButtonLockSingle ()

void	onButtonStudentToTutor ()
	Handle projection from one student to tutor. More...

void	onButtonStudentToTutorExclusive ()
	Handle projection from one student to tutor, lock everyone else. More...

void	onButtonTutorToAll ()
	Handle projection from tutor to all. More...

void	onButtonTutorToStudent ()
	Handle the projection from Tutor to specific student. More...

void	onButtonStopProjection ()
	Handle Button StopProjection. More...

void	onButtonSetAsTutor ()
	Handle button to set specific client as tutor. More...

void	onButtonReloadRoomConfig ()

void	onReloadRoomOk ()

void	onReloadRoomCancel ()

void	onButtonExit ()
	On button exit, close application. More...

void	onButtonHelp ()
	Display popup which explains possible actions about the buttons. More...

void	onFrameMoving (ConnectionFrame *frame)

void	onFrameDropped (ConnectionFrame *frame)
	Place frame to from user specified position. More...

void	onFrameClicked (ConnectionFrame *frame)
	Mark given frame after it was clicked on. More...

void	onClientConnected (Client *client)
	Handle from ListenServer signaled new client connection. More...

void	onClientAuthenticating (Client client, ClientLogin request)
	Authenticate new Client client. More...

void	onClientAuthenticated (Client *client)
	New client was authenticated, make several checks. More...

void	onVncServerStateChange (Client *client)
	Handle if VNC Server State has changed. More...

void	onVncClientStateChange (Client *client)
	Handle VNC client state change. More...

Private Types
enum	Mode { Mode::Broadcast, Mode::Multicast, Mode::Unicast, Mode::LockedUnicast, Mode::None }

Private Member Functions
QPoint	closestFreeSlot (const QPoint &preferredPixels, const ConnectionFrame *toIgnore)
	: find the closest available frame. More...

void	placeFrameInFreeSlot (ConnectionFrame *frame, QPoint preferred=QPoint(-1,-1))

ConnectionFrame *	createFrame (const QString &computerId=QString(), const QPoint *gridPosition=nullptr, bool fromRoomplan=false)
	Create new Frame. More...

void	startVncServerIfNecessary (int from)
	MainWindow::startVncServerIfNecessary. More...

void	tellClientCurrentSituation (Client *client)
	Tells the new client the current situation in class room. More...

void	reset (bool lock=false)
	reset More...

Client *	getClientFromId (int id)
	Returns connected client which belongs to given id. More...

ConnectionFrame *	getTutorFrame ()
	Return the Frame, which is currently beeing Tutor. More...

ConnectionFrame *	getSelectedFrame ()
	Return the Frame, which is currently selected by user. More...

void	closeEvent (QCloseEvent *e) override
	Handle closeEvent. More...

void	changeEvent (QEvent *e) override
	Change Event. More...

void	resizeEvent (QResizeEvent *e) override
	Resize event. More...

void	mouseReleaseEvent (QMouseEvent *e) override
	Handle Mouse Release Event. More...

int	getTileWidthPx () const

int	getTileHeightPx () const

void	updateContextButtonStates ()

void	reloadCurrentRoom ()

void	vncOneOnOne (bool exclusive)

Private Attributes
Ui::MainWindow *	ui

SessionNameWindow *	_sessionNameWindow

HelpWindow *	_helpWindow

ReloadRoomWindow *	_reloadWindow

ClickLabel *	_sessionNameLabel

int	_tilesX

int	_tilesY

QImage *	_backgroundImage = nullptr

QLabel *	_examModeLabel = nullptr

QTimer *	_buttonLockTimer

QList< QAction * >	_lockingButtons

enum MainWindow::Mode	_mode

int	_streamingSource {}

QList< ConnectionFrame * >	_clientFrames

QWidget *	_dropMarker

int	_lastClientCount {}

Static Private Attributes
static const qint64	BUTTON_BLOCK_TIME = 2000

Detailed Description

Initializing MainWindow.

Handle ButtonEvents and initialize ListenServer.

Definition at line 27 of file mainwindow.h.

Member Enumeration Documentation

enum MainWindow::Mode

strongprivate

Enumerator
Broadcast
Multicast
Unicast
LockedUnicast
None

Definition at line 57 of file mainwindow.h.

Constructor & Destructor Documentation

MainWindow::MainWindow ( QWidget * parent = nullptr )

explicit

Initialize MainWindow and ListenServer.

Parameters

ipListUrl
parent

Definition at line 57 of file mainwindow.cpp.

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MainWindow::~MainWindow ( )

override

Definition at line 204 of file mainwindow.cpp.

Member Function Documentation

QRect MainWindow::calcFrameGeometry ( ConnectionFrame * frame ) const

Definition at line 814 of file mainwindow.cpp.

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void MainWindow::changeEvent ( QEvent * e )

overrideprivate

Change Event.

Parameters

e

Definition at line 419 of file mainwindow.cpp.

void MainWindow::clientCountChanged ( )

protectedslot

this function determines if the number of clients in exam mode comprise more than 50%.

In that case the whole manager switches to exam mode, disabling many features in the toolbar

Definition at line 160 of file mainwindow.cpp.

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void MainWindow::closeEvent ( QCloseEvent * e )

overrideprivate

Handle closeEvent.

If user calls closing MainWindow, close, else ignore.

Parameters

e

Definition at line 404 of file mainwindow.cpp.

QPoint MainWindow::closestFreeSlot	(	const QPoint &	preferredPixels,
		const ConnectionFrame *	toIgnore
	)

private

: find the closest available frame.

Closest: smallest Euclidean distance from center to center

'Algorithm': ideally, go in circles around the preferred point until you find a free spot. Lazy way: store all free positions in an array and find later there the closest (<- that's what I do)

Parameters

preferred	in Pixels!
toIgnore,ignore	this connectionframe when considering free slots

Returns: the free slot

Definition at line 232 of file mainwindow.cpp.

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ConnectionFrame * MainWindow::createFrame	(	const QString &	computerId = `QString()`,
		const QPoint *	gridPosition = `nullptr`,
		bool	fromRoomplan = `false`
	)

private

Create new Frame.

Create new frame and add to current available frame list. Also connect signals frameMoved() and clicked() with slots.

Returns: ConnectionFrame*

Definition at line 312 of file mainwindow.cpp.

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void MainWindow::disableButtons ( )

protectedslot

DisableButtons.

Definition at line 1260 of file mainwindow.cpp.

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void MainWindow::enableButtons ( )

protectedslot

EnableButtons.

Definition at line 1271 of file mainwindow.cpp.

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Client * MainWindow::getClientFromId ( int id )

private

Returns connected client which belongs to given id.

Iterating over ConnectionFrames and comparing id to given id.

Parameters

id

Returns: Client with given id, if not nullptr.

Definition at line 354 of file mainwindow.cpp.

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ConnectionFrame * MainWindow::getSelectedFrame ( )

private

Return the Frame, which is currently selected by user.

Iterating over all ConnectionFrame and looking for flag _isSelected.

Returns: Frame with flag _isSelected = true, else nullptr if no frame is selected.

Definition at line 386 of file mainwindow.cpp.

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int MainWindow::getTileHeightPx ( ) const

private

Definition at line 809 of file mainwindow.cpp.

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int MainWindow::getTileWidthPx ( ) const

private

Definition at line 803 of file mainwindow.cpp.

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ConnectionFrame * MainWindow::getTutorFrame ( )

private

Return the Frame, which is currently beeing Tutor.

Iterating over all ConnectionFrames, and looking for flag _isTutor.

Returns: Frame with flag _isTutor = true, else nullptr if no Tutor is available.

Definition at line 371 of file mainwindow.cpp.

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void MainWindow::mouseReleaseEvent ( QMouseEvent * e )

overrideprivate

Handle Mouse Release Event.

Check if click was inside the frame and if that is the case, set the selection of each connected client to false.

Parameters

e

Definition at line 542 of file mainwindow.cpp.

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void MainWindow::onButtonExit ( )

protectedslot

On button exit, close application.

Definition at line 1039 of file mainwindow.cpp.

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void MainWindow::onButtonHelp ( )

protectedslot

Display popup which explains possible actions about the buttons.

Definition at line 826 of file mainwindow.cpp.

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void MainWindow::onButtonLock ( bool checked )

protectedslot

Handle button to lock or unlock screens of client(s).

If already locked, do nothing, else lock or unlock the clients, except the tutor and the manager running machine.

Parameters

checked

Definition at line 1001 of file mainwindow.cpp.

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void MainWindow::onButtonLockSingle ( )

protectedslot

Definition at line 1007 of file mainwindow.cpp.

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void MainWindow::onButtonReloadRoomConfig ( )

protectedslot

Definition at line 698 of file mainwindow.cpp.

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void MainWindow::onButtonSetAsTutor ( )

protectedslot

Handle button to set specific client as tutor.

Unset active tutor and set selected client, if not inactive, as new tutor.

Definition at line 1048 of file mainwindow.cpp.

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void MainWindow::onButtonStopProjection ( )

protectedslot

Handle Button StopProjection.

Set ProjectionSource of each client to false, stop the active VNC Server and the active VNC Client(s) and unlock all screens.

Definition at line 989 of file mainwindow.cpp.

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void MainWindow::onButtonStudentToTutor ( )

protectedslot

Handle projection from one student to tutor.

Definition at line 921 of file mainwindow.cpp.

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void MainWindow::onButtonStudentToTutorExclusive ( )

protectedslot

Handle projection from one student to tutor, lock everyone else.

Definition at line 930 of file mainwindow.cpp.

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void MainWindow::onButtonTutorToAll ( )

protectedslot

Handle projection from tutor to all.

Get the client who is tutor and set the projectionSource of all clients, except the tutor ones, to false.

Definition at line 836 of file mainwindow.cpp.

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void MainWindow::onButtonTutorToStudent ( )

protectedslot

Handle the projection from Tutor to specific student.

Set the client who is tutor as from and the selected client as to.

Definition at line 868 of file mainwindow.cpp.

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void MainWindow::onClientAuthenticated ( Client * client )

protectedslot

New client was authenticated, make several checks.

Check if new clients ip already exists, if yes –> not necessary to create new clientFrame. if not –> create a new one and adapt this one to current situation in class room(projection / lock screen). Check if avctiv tutor is available, if not –> check if new client is possible tutor.

Parameters

client

Definition at line 1140 of file mainwindow.cpp.

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void MainWindow::onClientAuthenticating	(	Client *	client,
		ClientLogin *	request
	)

protectedslot

Authenticate new Client client.

Check if incoming client ip already exists, if yes –> return. Check if same name of client already exist, if yes –> name new client as name(x). x = number of clients with the same name.

Parameters

client
request

Definition at line 1093 of file mainwindow.cpp.

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void MainWindow::onClientConnected ( Client * client )

protectedslot

Handle from ListenServer signaled new client connection.

Parameters

client

Definition at line 1077 of file mainwindow.cpp.

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void MainWindow::onDeleteClient ( )

protectedslot

Definition at line 1281 of file mainwindow.cpp.

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void MainWindow::onFrameClicked ( ConnectionFrame * frame )

protectedslot

Mark given frame after it was clicked on.

Parameters

frame

Definition at line 612 of file mainwindow.cpp.

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void MainWindow::onFrameDropped ( ConnectionFrame * connectionFrame )

protectedslot

Place frame to from user specified position.

Should be called when a connectionFrame is dropped during the "drag-n-drop".

Definition at line 601 of file mainwindow.cpp.

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void MainWindow::onFrameMoving ( ConnectionFrame * frame )

protectedslot

Definition at line 585 of file mainwindow.cpp.

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void MainWindow::onReloadRoomCancel ( )

protectedslot

Definition at line 709 of file mainwindow.cpp.

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void MainWindow::onReloadRoomOk ( )

protectedslot

Definition at line 772 of file mainwindow.cpp.

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void MainWindow::onSessionNameClick ( )

protectedslot

Show session name, after it was clicked on.

Definition at line 632 of file mainwindow.cpp.

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void MainWindow::onSessionNameUpdate ( )

protectedslot

Update session name.

Definition at line 640 of file mainwindow.cpp.

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void MainWindow::onVncClientStateChange ( Client * client )

protectedslot

Handle VNC client state change.

Check if any vnc client is in use, and if that is not the case, stop VNC Server.

Parameters

client
lastProjectionSource

Definition at line 1222 of file mainwindow.cpp.

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void MainWindow::onVncServerStateChange ( Client * client )

protectedslot

Handle if VNC Server State has changed.

Check if VNC server has been started/stopped on some client and start VNC server/reset pending VNC projection information.

Parameters

client

Definition at line 1172 of file mainwindow.cpp.

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void MainWindow::placeFrameInFreeSlot	(	ConnectionFrame *	frame,
		QPoint	preferred = `QPoint(-1, -1)`
	)

private

Definition at line 300 of file mainwindow.cpp.

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void MainWindow::reloadCurrentRoom ( )

private

Definition at line 717 of file mainwindow.cpp.

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void MainWindow::reset ( bool lock = false )

private

reset

Definition at line 562 of file mainwindow.cpp.

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void MainWindow::resizeEvent ( QResizeEvent * e )

overrideprivate

Resize event.

Parameters

e

Definition at line 450 of file mainwindow.cpp.

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void MainWindow::startVncServerIfNecessary ( int from )

private

MainWindow::startVncServerIfNecessary.

Parameters

from

Definition at line 675 of file mainwindow.cpp.

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void MainWindow::tellClientCurrentSituation ( Client * client )

private

Tells the new client the current situation in class room.

Set the specific parameters like projection source or lock screen.

Parameters

client

Definition at line 334 of file mainwindow.cpp.

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void MainWindow::updateContextButtonStates ( )

private

Definition at line 515 of file mainwindow.cpp.

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void MainWindow::vncOneOnOne ( bool exclusive )

private

Definition at line 935 of file mainwindow.cpp.

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Member Data Documentation

QImage* MainWindow::_backgroundImage = nullptr

private

Definition at line 48 of file mainwindow.h.

QTimer* MainWindow::_buttonLockTimer

private

Definition at line 52 of file mainwindow.h.

QList<ConnectionFrame*> MainWindow::_clientFrames

private

Definition at line 67 of file mainwindow.h.

QWidget* MainWindow::_dropMarker

private

Definition at line 68 of file mainwindow.h.

QLabel* MainWindow::_examModeLabel = nullptr

private

Definition at line 49 of file mainwindow.h.

HelpWindow* MainWindow::_helpWindow

private

Definition at line 43 of file mainwindow.h.

int MainWindow::_lastClientCount {}

private

Definition at line 70 of file mainwindow.h.

QList<QAction*> MainWindow::_lockingButtons

private

Definition at line 53 of file mainwindow.h.

enum MainWindow::Mode MainWindow::_mode

private

ReloadRoomWindow* MainWindow::_reloadWindow

private

Definition at line 44 of file mainwindow.h.

ClickLabel* MainWindow::_sessionNameLabel

private

Definition at line 45 of file mainwindow.h.

SessionNameWindow* MainWindow::_sessionNameWindow

private

Definition at line 42 of file mainwindow.h.

int MainWindow::_streamingSource {}

private

Definition at line 65 of file mainwindow.h.

int MainWindow::_tilesX

private

Definition at line 46 of file mainwindow.h.

int MainWindow::_tilesY

private

Definition at line 47 of file mainwindow.h.

const qint64 MainWindow::BUTTON_BLOCK_TIME = 2000

staticprivate

Definition at line 54 of file mainwindow.h.

Ui::MainWindow* MainWindow::ui

private

Definition at line 41 of file mainwindow.h.

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

server/mainwindow/mainwindow.h
server/mainwindow/mainwindow.cpp

Public Member Functions

Protected Slots

Private Types

Private Member Functions

Private Attributes

Static Private Attributes

Detailed Description

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation