Hi Phil
I am using the attached qt project file on my CentOS 6.8 build, adapted
to build
examples/c++/wxPLplotDemo.cpp
to use, place the file in
examples/c++
just change these lines for your own case
dir_inc_plplot =
/data/home002/pvicente/plplot-plplot-install/include/plplot
dir_lib_plplot = /data/home002/pvicente/plplot-plplot-install/lib
dir_inc_wx =
/data/data127/pvicente/install/wxwidgets-3.1.0d/include/wx-3.1
dir_inc_wx_setup =
/data/data127/pvicente/install/wxwidgets-3.1.0d/lib/wx/include/gtk2-unicode-static-3.1
dir_lib_wx = /data/data127/pvicente/install/wxwidgets-3.1.0d/lib
in QtCreator change in Projects/Run, disable the the "Run in Terminal"
this is the stack on the window creation as shown in QtCreator
0 wxWindow::PostCreation window.cpp 2753 0x4d9ea4
1 wxTopLevelWindowGTK::Create toplevel.cpp 674 0x4cdb79
2 wxFrame::Create frame.cpp 48 0x4e672b
3 MyApp::OnInit wxPLplotDemo.cpp 148 0x4259d8
4 wxAppConsoleBase::CallOnInit app.h 93 0x426c23
5 wxEntry init.cpp 487 0x6bf36d
6 wxEntry init.cpp 515 0x6bf475
7 main wxPLplotDemo.cpp 131 0x4258a4
As opposed to the wxWidgets Windows build, that uses the WIN32 API, for
linux it's a totally different API (GTK),
so the issue may be a wxWidgets GTK code thing
-Pedro
On 2016-12-14 10:59, Pedro Vicente wrote:
Hi Phil
Were you able to reproduce the error I get on my linux builds of
wxPLplotDemo?
I just did a git clone of the last plplot and I still get the error
see my last email from today, there are instructions on how to debug
with Qt
project here
https://github.com/pedro-vicente/plplot-wxwidgets/blob/master/wx_plplot/wx_plplot.qt.ubuntu.x86_64.pro
then install QtCreator
https://www.qt.io/download-open-source/#section-2
and use the file wx_plplot.qt.ubuntu.x86_64.pro
what I did
git clone http://git.code.sf.net/p/plplot/plplot plplot-plplot
then I edited the file examples/c++/wxPLplotDemo.cpp and added this
assert here
wxPLplotstream* pls = plotwindow->GetStream();
assert(pls);
just to make sure this is the issue.
then
cd plplot-plplot
cmake .. -G "Unix Makefiles" -DBUILD_SHARED_LIBS:BOOL=OFF
-DENABLE_f95:BOOL=OFF -DENABLE_tcl:BOOL=OFF -DENABLE_tk:BOOL=OFF
-DBUILD_TEST:BOOL=ON >& cmake2.txt &
make >& make2.txt &
cd examples/c++/
./wxPLplotDemo
wxPLplotDemo:
/data/home002/pvicente/plplot-plplot/examples/c++/wxPLplotDemo.cpp:158:
void Plot(wxPLplotwindow<WXWINDOW>*) [with WXWINDOW = wxFrame]:
Assertion `pls' failed.
Aborted
On 2016-12-10 03:57, Phil Rosenberg wrote:
Hi Pedro
I have included the devel list on this email, so the thread will get
documented on the mailing list.
It is very strange that the OnCreate function is not being called.
If
you are calling Create then you should be generating a create event.
Am I correct in saying that you are getting this segfault with the
unchanged demo app?
This location really is the best (and maybe only) place this
initialisation should be done. It cannot be included in the
constructor, because the generic nature of the template
specification
means the code in the constructor does not know which type of
wxWindow
we are inheriting from so cannot pass the correct parameters to the
constructor. By the time OnPaint is called it is really too late,
because we would like to already have the plot initialised and ready
to draw and it would be a real pain for you in your code if you had
to
somehow wait for the first paint or resize event.
I do have access to a CentOS machine at work, although I think I
have
only got access to wxWidgets 2.8 on that system. I will check. I may
be able to build 3.1 from source. I presume you are using 3.1.0 as
released in February, rather than the head of the master branch?
On 10 December 2016 at 07:52, Pedro Vicente
<pedro.vice...@space-research.org> wrote:
Hi Phil
My idea for a fix is to move the stream initialization that is now
on
void wxPLplotwindow<WXWINDOW>::OnCreate( wxWindowCreateEvent &event
{
if ( !m_created )
either to the OnSize or onPaint events
void wxPLplotwindow<WXWINDOW>::OnSize( wxSizeEvent& WXUNUSED( event
) )
and also in the plot call do this
template< class WXWINDOW >
void Plot( wxPLplotwindow<WXWINDOW> *plotwindow )
{
wxPLplotstream* pls = plotwindow->GetStream();
if (pls == NULL)
{
return;
}
Like this , in this sequence
wxPLplotwindow<wxFrame> *frame = new wxPLplotwindow<wxFrame>();
frame->Create( NULL, wxID_ANY, wxT( "wxPLplotDemo" ) );
frame->SetIcon( wxIcon( graph ) );
frame->Show();
Plot( frame );
first we go to
Plot( frame );
but the stream is NULL because
:OnCreate
was not called, but the function returns, avoiding the seg fault
then the window gets a paint or size event, and the stream
initialization
code is called
at this time I have a PLplot empty black window
but because
Plot( frame );
was only called at start, it is not called again, so there is no
draw
any ideas here ?
of course making the Plot() call in another app function should
work
If you could replicate this issue, that would be great.
I am using CentOS 6.8, PLplot.5.11.1 , wxWidgets 3.1.0
----- Original Message ----- From: Pedro Vicente
To: plplot-devel@lists.sourceforge.net ; Phil Rosenberg
Sent: Saturday, December 10, 2016 12:59 AM
Subject: Re: [Plplot-devel] wxPLplotDemo.cpp errors
Hi Phil
So, the issue seems to be the same that I have been reporting
In the wxPLplotDemo.cpp code you have these callling functions
wxPLplotwindow<wxFrame> *frame = new wxPlDemoFrame();
frame->Create( NULL, wxID_ANY, wxT( "wxPLplotDemo" ) );
that make 2 calls to the PLplot library, or the wxWidgets driver of
it
all these calls are in the header file wxPLplotwindow.h
first the constructor is called
template<class WXWINDOW>
wxPLplotwindow<WXWINDOW>::wxPLplotwindow( bool useGraphicsContext,
wxSize
clientSize )
: m_created( false ), m_initialSize( clientSize )
then this call OnCreate() is called, like you mentioned
and the !m_created bool makes the initialization of the stream
happen
the problem is that this function id *NOT* called on my linux
build
(it is
on the Windows build)
so therefore later
wxPLplotstream* pls = plotwindow->GetStream();
this is NULL, so therefore it seg faults on the plot calls
//! This is called when the widow is created i.e. after
WXWINDOW::Create
// has been called. We note that this has been called to avoid
attempting
// to redraw a plot on a window that hasn't been created yet.
template<class WXWINDOW>
void wxPLplotwindow<WXWINDOW>::OnCreate( wxWindowCreateEvent &event
)
{
if ( !m_created )
so, one quick try is to put the code of
void wxPLplotwindow<WXWINDOW>::OnCreate
that is not called on the constructor maybe ?
-Pedro
----- Original Message ----- From: Pedro Vicente
To: plplot-devel@lists.sourceforge.net ; Phil Rosenberg
Sent: Friday, December 09, 2016 11:57 PM
Subject: [Plplot-devel] wxPLplotDemo.cpp errors
Hi Phil
So, resuming the last thread about wxWidgets, what I did was to
build and
run wxPLplotDemo.cpp from PLpplot 5.11.1 on CentOS 6.8
all builds fine, but when I do run , I get a seg fault
[pedro.vicente@rhw9121 c++]$ cd
/data/home002/pvicente/plplot/build/examples/c++
[pedro.vicente@rhw9121 c++]$ ./wxPLplotDemo
Segmentation fault
I know that only this information is not much help to you to debug,
but in
the next couple of days I'll be debugging this and posting here any
solution.
my cmake call was
cmake .. -G "Unix Makefiles" -DBUILD_SHARED_LIBS:BOOL=OFF
-DENABLE_f95:BOOL=OFF -DENABLE_tcl:BOOL=OFF -DENABLE_tk:BOOL=OFF
-DCMAKE_INSTALL_PREFIX:PATH=/data/data127/pvicente/install/plplot-5.11.1d
-DPL_HAVE_PTHREAD:BOOL=OFF -DPLD_xwin:BOOL=OFF
-DPLD_wxwidgets:BOOL=ON
-DwxWidgets_ROOT_DIR:PATH=/data/data127/pvicente/install/wxwidgets-3.1.0
-DwxWidgets_LIB_DIR:PATH=/data/data127/pvicente/install/wxwidgets-3.1.0/lib
-DwxWidgets_CONFIGURATION=mswud -DENABLE_MIX_CXX=ON
-DwxWidgets_EXCLUDE_COMMON_LIBRARIES:BOOL=OFF
-DCMAKE_VERBOSE_MAKEFILE:BOOL=ON -DBUILD_TEST:BOOL=ON >& cmake.txt
&
the output of
cmake
and
make
are attached
-Pedro
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http://www.space-research.org/
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# usage :
# make -f Makefile
# make -f Makefile clean
# wx-config --cxxflags
# wx-config --libs
TEMPLATE = app
TARGET = wxPLplotDemo_qt
QT -= gui
CONFIG += console
CONFIG += debug
CONFIG += static
lessThan(QT_MAJOR_VERSION, 5) {
QMAKE_CXXFLAGS += -std=c++0x
} else {
CONFIG += c++11
}
HDR1 =
SRC1 =
SRC_MAIN1 = wxPLplotDemo.cpp
unix {
DEFINES += _FILE_OFFSET_BITS=64
DEFINES += __WXGTK__
DEFINES += pthread
dir_inc_plplot = /data/home002/pvicente/plplot-plplot-install/include/plplot
dir_lib_plplot = /data/home002/pvicente/plplot-plplot-install/lib
dir_inc_wx = /data/data127/pvicente/install/wxwidgets-3.1.0d/include/wx-3.1
dir_inc_wx_setup =
/data/data127/pvicente/install/wxwidgets-3.1.0d/lib/wx/include/gtk2-unicode-static-3.1
dir_lib_wx = /data/data127/pvicente/install/wxwidgets-3.1.0d/lib
INCLUDEPATH += $${dir_inc_plplot}
INCLUDEPATH += $${dir_inc_wx}
INCLUDEPATH += $${dir_inc_wx_setup}
INCLUDEPATH += ../wx_lib
QMAKE_LIBDIR += $${dir_lib_plplot}
LIBS += -lplplotwxwidgets
LIBS += -lplplotcxx
LIBS += -lplplot
LIBS += -lcsirocsa
LIBS += -lqsastime
QMAKE_LIBDIR += $${dir_lib_wx}
LIBS += -lwx_gtk2u_xrc-3.1
LIBS += -lwx_gtk2u_qa-3.1
LIBS += -lwx_baseu_net-3.1
LIBS += -lwx_gtk2u_html-3.1
LIBS += -lwx_gtk2u_adv-3.1
LIBS += -lwx_gtk2u_core-3.1
LIBS += -lwx_baseu-3.1
LIBS += -pthread
LIBS += -lX11
LIBS += -lXxf86vm
LIBS += -lSM
LIBS += -lgtk-x11-2.0
LIBS += -lgdk-x11-2.0
LIBS += -latk-1.0
LIBS += -lgio-2.0
LIBS += -lpangoft2-1.0
LIBS += -lpangocairo-1.0
LIBS += -lgdk_pixbuf-2.0
LIBS += -lcairo
LIBS += -lpango-1.0
LIBS += -lfreetype
LIBS += -lfontconfig
LIBS += -lgobject-2.0
LIBS += -lgmodule-2.0
LIBS += -lgthread-2.0
LIBS += -lrt
LIBS += -lglib-2.0
LIBS += -lpng
LIBS += -ljpeg
LIBS += -lexpat
LIBS += -lwxregexu-3.1
LIBS += -lwxtiff-3.1
LIBS += -lz -ldl
LIBS += -lm
LIBS += -llzma
QMAKE_LFLAGS += -Wl,-rpath,$${dir_lib_wx}
QMAKE_LFLAGS += -Wl,-rpath,$${dir_lib_plplot}
HEADERS += $${HDR1}
SOURCES += $${SRC1} $${SRC_MAIN1}
}
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