2020.0.0 calibrate_lens_gui - multiple assertions at startup

[Andreas Metzler]

Hello,

starting calibrate_lens_gui generates assertion errors:

ASSERT INFO:
../src/gtk/bitmap.cpp(1262): assert "bmpData->m_pixbufNoMask" failed in SetSourceSurface(): no bitmap data

BACKTRACE:
[1] wxBitmap::SetSourceSurface(_cairo*, int, int, wxColour const*, wxColour const*) const
[2] wxBitmap::Draw(_cairo*, int, int, bool, wxColour const*, wxColour const*) const
[3] wxEvtHandler::ProcessEventIfMatchesId(wxEventTableEntryBase const&, wxEvtHandler*, wxEvent&)
[4] wxEventHashTable::HandleEvent(wxEvent&, wxEvtHandler*)
[5] wxEvtHandler::TryHereOnly(wxEvent&)
[6] wxEvtHandler::ProcessEventLocally(wxEvent&)
[7] wxEvtHandler::ProcessEvent(wxEvent&)
[8] wxEvtHandler::SafelyProcessEvent(wxEvent&)
[9] wxWindow::GTKSendPaintEvents(_cairo*)
[10] g_closure_invoke
[11] g_signal_emit_valist
[12] g_signal_emit
[13] gtk_container_propagate_draw
[14] gtk_container_propagate_draw
[15] gtk_container_propagate_draw
[16] g_closure_invoke
[17] g_signal_emit_valist
[18] g_signal_emit
[19] gtk_container_propagate_draw
[20] g_closure_invoke
[21] g_signal_emit_valist
[22] g_signal_emit
[23] gtk_container_propagate_draw
[24] gtk_container_propagate_draw
[25] gtk_main_do_event
[26] g_signal_emit_valist
[27] g_signal_emit
[28] g_main_context_dispatch
[29] g_main_loop_run
[30] gtk_main
[31] wxGUIEventLoop::DoRun()
[32] wxEventLoopBase::Run()
[33] wxAppConsoleBase::MainLoop()
[34] wxEntry(int&, wchar_t**)
[35] __libc_start_main

Te error is shown three times. After clicking though (Continue) the program is stuck (no window refresh) and nned to be Ctrl-C-ed.

cu Andreas

[tmodes (tmodes)]

I can't reproduce the issue. I get no assert on Windows and also not on Ubuntu.

The issue seems to stem from wxWidgets see http://trac.wxwidgets.org/ticket/18520
and seems to fixed up-streams already in the 3.1.x series.

Could you please test if the attached patch fixes the issue for you?

[Andreas Metzler (k-launchpad-downhill-at-eu-org)]

On 2020-12-29 tmodes <email address hidden> wrote:
> I can't reproduce the issue. I get no assert on Windows and also not on
> Ubuntu.

> The issue seems to stem from wxWidgets see
> http://trac.wxwidgets.org/ticket/18520 and seems to fixed up-streams
> already in the 3.1.x series.

> Could you please test if the attached patch fixes the issue for you?

It does. Thanks a lot!

cu Andreas

[tmodes (tmodes)]

Committed changes to repository in default branch.

Andreas, thanks for testing.