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gnuplot/src/qtterminal/QtGnuplotEvent.cpp at 5.5 · gnuplot/gnuplot · GitHub
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/*
GNUPLOT - QtGnuplotEvent.cpp
*/
/*
[
* Copyright 2009 Jérôme Lodewyck
*
* Permission to use, copy, and distribute this software and its
* documentation for any purpose with or without fee is hereby granted,
* provided that the above copyright notice appear in all copies and
* that both that copyright notice and this permission notice appear
* in supporting documentation.
*
* Permission to modify the software is granted, but not the right to
* distribute the complete modified source code. Modifications are to
* be distributed as patches to the released version. Permission to
* distribute binaries produced by compiling modified sources is granted,
* provided you
* 1. distribute the corresponding source modifications from the
* released version in the form of a patch file along with the binaries,
* 2. add special version identification to distinguish your version
* in addition to the base release version number,
* 3. provide your name and address as the primary contact for the
* support of your modified version, and
* 4. retain our contact information in regard to use of the base
* software.
* Permission to distribute the released version of the source code along
* with corresponding source modifications in the form of a patch file is
* granted with same provisions 2 through 4 for binary distributions.
*
* This software is provided "as is" without express or implied warranty
* to the extent permitted by applicable law.
*
*
* Alternatively, the contents of this file may be used under the terms of the
* GNU General Public License Version 2 or later (the "GPL"), in which case the
* provisions of GPL are applicable instead of those above. If you wish to allow
* use of your version of this file only under the terms of the GPL and not
* to allow others to use your version of this file under the above gnuplot
* license, indicate your decision by deleting the provisions above and replace
* them with the notice and other provisions required by the GPL. If you do not
* delete the provisions above, a recipient may use your version of this file
* under either the GPL or the gnuplot license.
]
*/
#
include
"
QtGnuplotEvent.h
"
#
include
"
QtGnuplotWidget.h
"
extern
"
C
"
{
#
include
"
../mousecmn.h
"
}
#
include
<
QtNetwork
>
QString
QtGnuplotEventReceiver::serverName
()
{
if
(m_eventHandler)
return
m_eventHandler->
serverName
();
return
QString
();
}
QtGnuplotEventHandler::QtGnuplotEventHandler
(QObject* parent,
const
QString& socket)
: QObject(parent)
{
m_blockSize =
0
;
m_socket =
0
;
m_server =
new
QLocalServer
(
this
);
if
(!m_server->
listen
(socket))
qDebug
() <<
"
QtGnuplotApplication error : cannot open server
"
;
connect
(m_server,
SIGNAL
(
newConnection
()),
this
,
SLOT
(
newConnection
()));
}
QString
QtGnuplotEventHandler::serverName
()
{
return
m_server->
serverName
();
}
void
QtGnuplotEventHandler::newConnection
()
{
m_socket = m_server->
nextPendingConnection
();
connect
(m_socket,
SIGNAL
(
readyRead
()),
this
,
SLOT
(
readEvent
()));
connect
(m_socket,
SIGNAL
(
disconnected
()),
this
,
SLOT
(
connectionClosed
()));
emit
(
connected
());
}
void
QtGnuplotEventHandler::connectionClosed
()
{
emit
(
disconnected
());
}
void
QtGnuplotEventHandler::readEvent
()
{
QDataStream
in
(m_socket);
in.
setVersion
(QDataStream::Qt_4_4);
QtGnuplotEventReceiver* receiver =
dynamic_cast
<QtGnuplotEventReceiver*>(
parent
());
if
(!receiver)
{
qDebug
() <<
"
QtGnuplotEventHandler::readEvent -- No receiver !
"
;
return
;
}
while
(!in.
atEnd
())
{
//
Extract the message length
if
(m_blockSize ==
0
)
{
if
(m_socket->
bytesAvailable
() < (
int
)
sizeof
(qint32))
return
;
in >> m_blockSize;
}
//
Break if the message is not entirely received yet
if
(m_socket->
bytesAvailable
() < m_blockSize)
return
;
//
Process the message
int
remaining = m_socket->
bytesAvailable
() - m_blockSize;
while
(m_socket->
bytesAvailable
() > remaining)
{
int
type;
in >> type;
if
((type <
1000
) || (type > GEDone))
{
//
FIXME EAM - At this point the program cannot recover and
//
if we try to continue it will eventually become a zombie.
//
Better to just exit explicitly right now.
qDebug
() <<
"
qt_gnuplot exiting on read error
"
;
exit
(
0
);
//
return;
}
receiver->
processEvent
(
QtGnuplotEventType
(type), in);
}
m_blockSize =
0
;
}
}
bool
QtGnuplotEventHandler::postTermEvent
(
int
type,
int
mx,
int
my,
int
par1,
int
par2, QtGnuplotWidget* widget)
{
if
((m_socket ==
0
) || (m_socket->
state
() != QLocalSocket::ConnectedState))
return
false
;
if
(widget && !widget->
isActive
()) {
if
(type == GE_buttonrelease) {
//
qDebug() << "Rescued buttonrelease event with widget inactive";
}
else
{
//
qDebug() << "Event lost because widget is not active";
return
false
;
}
}
gp_event_t
event;
event.
type
= type;
event.
mx
= mx;
event.
my
= my;
event.
par1
= par1;
event.
par2
= par2;
event.
winid
=
0
;
//
We don't forward any window id to gnuplot
m_socket->
write
((
char
*) &event,
sizeof
(
gp_event_t
));
return
true
;
}
//
Catch events for which the receiver is not active
void
QtGnuplotEventReceiver::swallowEvent
(QtGnuplotEventType type, QDataStream& in)
{
QPoint point;
QString string;
int
i;
bool
b;
if
(type == GESetCurrentWindow) in >> i;
//
1000
else
if
(type == GEInitWindow) ;
//
1001
else
if
(type == GECloseWindow) in >> i;
//
1002
else
if
(type == GEExit) ;
//
1003
else
if
(type == GEPersist) ;
//
1004
else
if
(type == GEStatusText) in >> string;
//
1005
else
if
(type == GETitle) in >> string;
//
1006
else
if
(type == GESetCtrl) in >> b;
//
1007
else
if
(type == GESetRounded) in >> b;
else
if
(type == GESetAntiAlias) in >> b;
else
if
(type == GESetReplotOnResize) in >> b;
else
if
(type == GECursor) in >> i;
//
1009
else
if
(type == GEZoomStart) in >> string;
//
1022
else
if
(type == GEZoomStop) in >> string;
//
1023
else
if
(type == GERaise) ;
//
1034
else
if
(type == GEDesactivate) ;
//
1038
else
if
(type == GESetPosition) in >> point;
else
qDebug
() <<
"
Event not swallowed !
"
<< type;
}
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