beremiz

Fix 'DoGetTextExtent - invalid DC' error

2018-06-26, Andrey Skvortsov
3c94bac4526e
Fix 'DoGetTextExtent - invalid DC' error

most likely this error happens only on certain wx backends.
GTK3+ on GNU/Linux is apparently one of them.
The problem is described in wxWidgets issue tracker.
http://trac.wxwidgets.org/ticket/12486

[-------------------------------------------------------------------------------------------------------------------]
platform:
Linux-4.16.0-2-rt-amd64-x86_64-with-debian-buster-sid

python-version:
2.7.15

traceback:
File "/home/developer/WorkData/PLC/beremiz/beremiz/ProjectController.py", line 1605, in DispatchDebugValuesProc
self.CallWeakcallables("__tick__", "NewDataAvailable", debug_ticks)
File "/home/developer/WorkData/PLC/beremiz/beremiz/ProjectController.py", line 1585, in CallWeakcallables
function(*cargs)
File "/home/developer/WorkData/PLC/beremiz/beremiz/editors/Viewer.py", line 1217, in NewDataAvailable
refresh_rect.Union(element.GetRedrawRect())
File "/home/developer/WorkData/PLC/beremiz/beremiz/graphics/GraphicCommons.py", line 1609, in GetRedrawRect
self.ValueSize = self.Parent.GetMiniTextExtent(self.ComputedValue)
File "/home/developer/WorkData/PLC/beremiz/beremiz/editors/Viewer.py", line 932, in GetMiniTextExtent
return self.MiniTextDC.GetTextExtent(text)
File "/usr/lib/python2.7/dist-packages/wx-3.0-gtk3/wx/_gdi.py", line 4127, in GetTextExtent
return _gdi_.DC_GetTextExtent(*args, **kwargs)
: C++ assertion "m_graphicContext" failed at ../src/common/dcgraph.cpp(1160) in DoGetTextExtent(): wxGCDC(cg)::DoGetTextExtent - invalid DC

wx-platform:
__WXGTK__

wx-version:
3.0.2.0

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traceback:
File "/home/developer/WorkData/PLC/beremiz/beremiz/controls/LogViewer.py", line 740, in OnMessageToolTipTimer
self.MessageToolTip.SetFont(self.Font)
File "/home/developer/WorkData/PLC/beremiz/beremiz/controls/CustomToolTip.py", line 75, in SetFont
self.RefreshTip()
File "/home/developer/WorkData/PLC/beremiz/beremiz/controls/CustomToolTip.py", line 158, in RefreshTip
self.SetClientSize(self.GetToolTipSize())
File "/home/developer/WorkData/PLC/beremiz/beremiz/controls/CustomToolTip.py", line 145, in GetToolTipSize
w, h = dc.GetTextExtent(line)
File "/usr/lib/python2.7/dist-packages/wx-3.0-gtk3/wx/_gdi.py", line 4127, in GetTextExtent
return _gdi_.DC_GetTextExtent(*args, **kwargs)
: C++ assertion "m_graphicContext" failed at ../src/common/dcgraph.cpp(1160) in DoGetTextExtent(): wxGCDC(cg)::DoGetTextExtent - invalid DC

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include yslt_noindent.yml2
istylesheet xmlns:ppx="http://www.plcopen.org/xml/tc6_0201"
xmlns:xhtml="http://www.w3.org/1999/xhtml"
xmlns:ns="beremiz"
extension-element-prefixes="ns"
exclude-result-prefixes="ns" {
param "instance_type";
template "text()";
variable "project", "ns:GetProject()";
variable "stdlib", "ns:GetStdLibs()";
variable "extensions", "ns:GetExtensions()";
variable "all_types", "($project | $stdlib | $extensions)/ppx:types";
template "ppx:project" {
apply "ppx:instances/ppx:configurations/ppx:configuration";
}
template "ppx:configuration" {
apply "ppx:globalVars/ppx:variable[ppx:type/ppx:derived] | ppx:resource" {
with "parent_path" > «@name»
}
}
template "ppx:resource" {
param "parent_path";
variable "resource_path" > «$parent_path».«@name»
apply "ppx:globalVars/ppx:variable[ppx:type/ppx:derived] | ppx:pouInstance | ppx:task/ppx:pouInstance" {
with "parent_path" > «$resource_path»
}
}
template "ppx:pouInstance" {
param "parent_path";
variable "pou_instance_path" > «$parent_path».«@name»
choose {
when "@typeName=$instance_type" {
value "ns:AddInstance($pou_instance_path)";
}
otherwise {
variable "type_name" > «@typeName»
apply """$all_types/ppx:pous/ppx:pou[@name=$type_name] | \
$all_types/ppx:dataTypes/ppx:dataType[@name=$type_name]""" {
with "instance_path" > «$pou_instance_path»
}
}
}
}
template "ppx:pou" {
param "instance_path";
apply "ppx:interface/*/ppx:variable[ppx:type/ppx:derived]" {
with "parent_path" > «$instance_path»
}
}
template "ppx:dataType" {
param "instance_path";
apply "ppx:baseType/*[self::ppx:derived or self::ppx:struct or self::ppx:array]" {
with "parent_path" > «$instance_path»
}
}
template "ppx:variable" {
param "parent_path";
variable "variable_path" > «$parent_path».«@name»
apply "ppx:type/ppx:derived" {
with "variable_path" > «$variable_path»
}
}
template "ppx:derived" {
param "variable_path";
choose {
when "@name=$instance_type" {
value "ns:AddInstance($variable_path)";
}
otherwise {
variable "type_name" > «@name»
apply """$all_types/ppx:pous/ppx:pou[@name=$type_name] | \
$all_types/ppx:dataTypes/ppx:dataType[@name=$type_name]""" {
with "instance_path" > «$variable_path»
}
}
}
}
template "ppx:struct" {
param "variable_path";
foreach "ppx:variable[ppx:type/ppx:derived or ppx:type/ppx:struct or ppx:type/ppx:array]" {
variable "element_path" > «$variable_path».«@name»
}
apply "ppx:type/*[self::ppx:derived or self::ppx:struct or self::ppx:array]" {
with "variable_path" > «$element_path»
}
}
template "ppx:array" {
param "variable_path";
apply "ppx:baseType/*[self::ppx:derived or self::ppx:struct or self::ppx:array]" {
with "variable_path" > «$variable_path»
}
}
}