SVGHMI: Behave when project path include spaces, and make more understandable error in case of problem extracting geometry with inkscape.
#!/usr/bin/env python
# -*- coding: utf-8 -*-
# This file is part of Beremiz
# Copyright (C) 2019: Edouard TISSERANT
#
# See COPYING file for copyrights details.
from __future__ import absolute_import
import os
import shutil
from itertools import izip, imap
from pprint import pformat
import hashlib
import weakref
import shlex
import wx
import wx.dataview as dv
from lxml import etree
from lxml.etree import XSLTApplyError
import util.paths as paths
from POULibrary import POULibrary
from docutil import open_svg, get_inkscape_path
from util.ProcessLogger import ProcessLogger
from runtime.typemapping import DebugTypesSize
import targets
from editors.ConfTreeNodeEditor import ConfTreeNodeEditor
from XSLTransform import XSLTransform
HMI_TYPES_DESC = {
"HMI_NODE":{},
"HMI_STRING":{},
"HMI_INT":{},
"HMI_BOOL":{}
}
HMI_TYPES = HMI_TYPES_DESC.keys()
ScriptDirectory = paths.AbsDir(__file__)
class HMITreeNode(object):
def __init__(self, path, name, nodetype, iectype = None, vartype = None, cpath = None, hmiclass = None):
self.path = path
self.name = name
self.nodetype = nodetype
self.hmiclass = hmiclass
if iectype is not None:
self.iectype = iectype
self.vartype = vartype
self.cpath = cpath
if nodetype in ["HMI_NODE"]:
self.children = []
def pprint(self, indent = 0):
res = ">"*indent + pformat(self.__dict__, indent = indent, depth = 1) + "\n"
if hasattr(self, "children"):
res += "\n".join([child.pprint(indent = indent + 1)
for child in self.children])
res += "\n"
return res
def place_node(self, node):
best_child = None
known_best_match = 0
potential_siblings = {}
for child in self.children:
if child.path is not None:
in_common = 0
for child_path_item, node_path_item in izip(child.path, node.path):
if child_path_item == node_path_item:
in_common +=1
else:
break
# Match can only be HMI_NODE, and the whole path of node
# must match candidate node (except for name part)
# since candidate would become child of that node
if in_common > known_best_match and \
child.nodetype == "HMI_NODE" and \
in_common == len(child.path) - 1:
known_best_match = in_common
best_child = child
else:
potential_siblings[child.path[
-2 if child.nodetype == "HMI_NODE" else -1]] = child
if best_child is not None:
if node.nodetype == "HMI_NODE" and best_child.path[:-1] == node.path[:-1]:
return "Duplicate_HMI_NODE", best_child
return best_child.place_node(node)
else:
candidate_name = node.path[-2 if node.nodetype == "HMI_NODE" else -1]
if candidate_name in potential_siblings:
return "Non_Unique", potential_siblings[candidate_name]
if node.nodetype == "HMI_NODE" and len(self.children) > 0:
prev = self.children[-1]
if prev.path[:-1] == node.path[:-1]:
return "Late_HMI_NODE",prev
self.children.append(node)
return None
def etree(self, add_hash=False):
attribs = dict(name=self.name)
if self.path is not None:
attribs["path"] = ".".join(self.path)
if self.hmiclass is not None:
attribs["class"] = self.hmiclass
if add_hash:
attribs["hash"] = ",".join(map(str,self.hash()))
res = etree.Element(self.nodetype, **attribs)
if hasattr(self, "children"):
for child_etree in imap(lambda c:c.etree(), self.children):
res.append(child_etree)
return res
def traverse(self):
yield self
if hasattr(self, "children"):
for c in self.children:
for yoodl in c.traverse():
yield yoodl
def hash(self):
""" Produce a hash, any change in HMI tree structure change that hash """
s = hashlib.new('md5')
self._hash(s)
# limit size to HMI_HASH_SIZE as in svghmi.c
return map(ord,s.digest())[:8]
def _hash(self, s):
s.update(str((self.name,self.nodetype)))
if hasattr(self, "children"):
for c in self.children:
c._hash(s)
# module scope for HMITree root
# so that CTN can use HMITree deduced in Library
# note: this only works because library's Generate_C is
# systematicaly invoked before CTN's CTNGenerate_C
hmi_tree_root = None
on_hmitree_update = None
SPECIAL_NODES = [("HMI_ROOT", "HMI_NODE"),
("heartbeat", "HMI_INT")]
# ("current_page", "HMI_STRING")])
class SVGHMILibrary(POULibrary):
def GetLibraryPath(self):
return paths.AbsNeighbourFile(__file__, "pous.xml")
def Generate_C(self, buildpath, varlist, IECCFLAGS):
global hmi_tree_root, on_hmitree_update
"""
PLC Instance Tree:
prog0
+->v1 HMI_INT
+->v2 HMI_INT
+->fb0 (type mhoo)
| +->va HMI_NODE
| +->v3 HMI_INT
| +->v4 HMI_INT
|
+->fb1 (type mhoo)
| +->va HMI_NODE
| +->v3 HMI_INT
| +->v4 HMI_INT
|
+->fb2
+->v5 HMI_IN
HMI tree:
hmi0
+->v1
+->v2
+->fb0 class:va
| +-> v3
| +-> v4
|
+->fb1 class:va
| +-> v3
| +-> v4
|
+->v5
"""
# Filter known HMI types
hmi_types_instances = [v for v in varlist if v["derived"] in HMI_TYPES]
hmi_tree_root = None
# take first HMI_NODE (placed as special node), make it root
for i,v in enumerate(hmi_types_instances):
path = v["IEC_path"].split(".")
derived = v["derived"]
if derived == "HMI_NODE":
hmi_tree_root = HMITreeNode(path, "", derived, v["type"], v["vartype"], v["C_path"])
hmi_types_instances.pop(i)
break
assert(hmi_tree_root is not None)
# deduce HMI tree from PLC HMI_* instances
for v in hmi_types_instances:
path = v["IEC_path"].split(".")
# ignores variables starting with _TMP_
if path[-1].startswith("_TMP_"):
continue
derived = v["derived"]
kwargs={}
if derived == "HMI_NODE":
# TODO : make problem if HMI_NODE used in CONFIG or RESOURCE
name = path[-2]
kwargs['hmiclass'] = path[-1]
else:
name = path[-1]
new_node = HMITreeNode(path, name, derived, v["type"], v["vartype"], v["C_path"], **kwargs)
placement_result = hmi_tree_root.place_node(new_node)
if placement_result is not None:
cause, problematic_node = placement_result
if cause == "Non_Unique":
message = _("HMI tree nodes paths are not unique.\nConflicting variable: {} {}").format(
".".join(problematic_node.path),
".".join(new_node.path))
last_FB = None
for v in varlist:
if v["vartype"] == "FB":
last_FB = v
if v["C_path"] == problematic_node:
break
if last_FB is not None:
failing_parent = last_FB["type"]
message += "\n"
message += _("Solution: Add HMI_NODE at beginning of {}").format(failing_parent)
elif cause in ["Late_HMI_NODE", "Duplicate_HMI_NODE"]:
cause, problematic_node = placement_result
message = _("There must be only one occurrence of HMI_NODE before any HMI_* variable in POU.\nConflicting variable: {} {}").format(
".".join(problematic_node.path),
".".join(new_node.path))
self.FatalError("SVGHMI : " + message)
if on_hmitree_update is not None:
on_hmitree_update()
variable_decl_array = []
extern_variables_declarations = []
buf_index = 0
item_count = 0
found_heartbeat = False
hearbeat_IEC_path = ['CONFIG', 'HEARTBEAT']
for node in hmi_tree_root.traverse():
if not found_heartbeat and node.path == hearbeat_IEC_path:
hmi_tree_hearbeat_index = item_count
found_heartbeat = True
extern_variables_declarations += [
"#define heartbeat_index "+str(hmi_tree_hearbeat_index)
]
if hasattr(node, "iectype"):
sz = DebugTypesSize.get(node.iectype, 0)
variable_decl_array += [
"{&(" + node.cpath + "), " + node.iectype + {
"EXT": "_P_ENUM",
"IN": "_P_ENUM",
"MEM": "_O_ENUM",
"OUT": "_O_ENUM",
"VAR": "_ENUM"
}[node.vartype] + ", " +
str(buf_index) + ", 0, }"]
buf_index += sz
item_count += 1
if len(node.path) == 1:
extern_variables_declarations += [
"extern __IEC_" + node.iectype + "_" +
"t" if node.vartype is "VAR" else "p"
+ node.cpath + ";"]
assert(found_heartbeat)
# TODO : filter only requiered external declarations
for v in varlist:
if v["C_path"].find('.') < 0:
extern_variables_declarations += [
"extern %(type)s %(C_path)s;" % v]
# TODO check if programs need to be declared separately
# "programs_declarations": "\n".join(["extern %(type)s %(C_path)s;" %
# p for p in self._ProgramList]),
# C code to observe/access HMI tree variables
svghmi_c_filepath = paths.AbsNeighbourFile(__file__, "svghmi.c")
svghmi_c_file = open(svghmi_c_filepath, 'r')
svghmi_c_code = svghmi_c_file.read()
svghmi_c_file.close()
svghmi_c_code = svghmi_c_code % {
"variable_decl_array": ",\n".join(variable_decl_array),
"extern_variables_declarations": "\n".join(extern_variables_declarations),
"buffer_size": buf_index,
"item_count": item_count,
"var_access_code": targets.GetCode("var_access.c"),
"PLC_ticktime": self.GetCTR().GetTicktime(),
"hmi_hash_ints": ",".join(map(str,hmi_tree_root.hash()))
}
gen_svghmi_c_path = os.path.join(buildpath, "svghmi.c")
gen_svghmi_c = open(gen_svghmi_c_path, 'w')
gen_svghmi_c.write(svghmi_c_code)
gen_svghmi_c.close()
# Python based WebSocket HMITree Server
svghmiserverfile = open(paths.AbsNeighbourFile(__file__, "svghmi_server.py"), 'r')
svghmiservercode = svghmiserverfile.read()
svghmiserverfile.close()
runtimefile_path = os.path.join(buildpath, "runtime_00_svghmi.py")
runtimefile = open(runtimefile_path, 'w')
runtimefile.write(svghmiservercode)
runtimefile.close()
return ((["svghmi"], [(gen_svghmi_c_path, IECCFLAGS)], True), "",
("runtime_00_svghmi.py", open(runtimefile_path, "rb")))
# ^
# note the double zero after "runtime_",
# to ensure placement before other CTN generated code in execution order
class HMITreeSelector(wx.TreeCtrl):
def __init__(self, parent):
global on_hmitree_update
wx.TreeCtrl.__init__(self,parent,style=wx.TR_MULTIPLE)# | wx.TR_HIDE_ROOT)
isz = (16,16)
self.il = il = wx.ImageList(*isz)
self.fldridx = il.AddIcon(wx.ArtProvider.GetIcon(wx.ART_FOLDER, wx.ART_OTHER, isz))
self.fldropenidx = il.AddIcon(wx.ArtProvider.GetIcon(wx.ART_FOLDER_OPEN, wx.ART_OTHER, isz))
self.fileidx = il.AddIcon(wx.ArtProvider.GetIcon(wx.ART_NORMAL_FILE, wx.ART_OTHER, isz))
self.SetImageList(il)
on_hmitree_update = self.SVGHMIEditorUpdater()
self.MakeTree()
def _recurseTree(self, current_hmitree_root, current_tc_root):
for c in current_hmitree_root.children:
if hasattr(c, "children"):
display_name = ('{} (class={})'.format(c.name, c.hmiclass)) \
if c.hmiclass is not None else c.name
tc_child = self.AppendItem(current_tc_root, display_name)
self.SetPyData(tc_child, None)
self.SetItemImage(tc_child, self.fldridx, wx.TreeItemIcon_Normal)
self.SetItemImage(tc_child, self.fldropenidx, wx.TreeItemIcon_Expanded)
self._recurseTree(c,tc_child)
else:
display_name = '{} {}'.format(c.nodetype[4:], c.name)
tc_child = self.AppendItem(current_tc_root, display_name)
self.SetPyData(tc_child, None)
self.SetItemImage(tc_child, self.fileidx, wx.TreeItemIcon_Normal)
self.SetItemImage(tc_child, self.fileidx, wx.TreeItemIcon_Expanded)
def MakeTree(self):
global hmi_tree_root
self.Freeze()
self.root = None
self.DeleteAllItems()
root_display_name = _("Please build to see HMI Tree") if hmi_tree_root is None else "HMI"
self.root = self.AddRoot(root_display_name)
self.SetPyData(self.root, None)
self.SetItemImage(self.root, self.fldridx, wx.TreeItemIcon_Normal)
self.SetItemImage(self.root, self.fldropenidx, wx.TreeItemIcon_Expanded)
if hmi_tree_root is not None:
self._recurseTree(hmi_tree_root, self.root)
self.Thaw()
def SVGHMIEditorUpdater(self):
selfref = weakref.ref(self)
def SVGHMIEditorUpdate():
o = selfref()
if o is not None:
wx.CallAfter(o.MakeTree)
return SVGHMIEditorUpdate
class HMITreeView(wx.SplitterWindow):
def __init__(self, parent):
wx.SplitterWindow.__init__(self, parent,
style=wx.SUNKEN_BORDER | wx.SP_3D)
self.SelectionTree = HMITreeSelector(self)
#self.Staging = wx.Panel(self)
#self.SplitHorizontally(self.SelectionTree, self.Staging, 200)
self.Initialize(self.SelectionTree)
class SVGHMIEditor(ConfTreeNodeEditor):
CONFNODEEDITOR_TABS = [
(_("HMI Tree"), "CreateHMITreeView")]
def CreateHMITreeView(self, parent):
#self.HMITreeView = HMITreeView(self)
return HMITreeSelector(parent)
class SVGHMI(object):
XSD = """<?xml version="1.0" encoding="utf-8" ?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<xsd:element name="SVGHMI">
<xsd:complexType>
<xsd:attribute name="OnStart" type="xsd:string" use="optional"/>
<xsd:attribute name="OnStop" type="xsd:string" use="optional"/>
<xsd:attribute name="OnWatchdog" type="xsd:string" use="optional"/>
<xsd:attribute name="WatchdogInitial" type="xsd:integer" use="optional"/>
<xsd:attribute name="WatchdogInterval" type="xsd:integer" use="optional"/>
</xsd:complexType>
</xsd:element>
</xsd:schema>
"""
EditorType = SVGHMIEditor
ConfNodeMethods = [
{
"bitmap": "ImportSVG",
"name": _("Import SVG"),
"tooltip": _("Import SVG"),
"method": "_ImportSVG"
},
{
"bitmap": "ImportSVG", # should be something different
"name": _("Inkscape"),
"tooltip": _("Edit HMI"),
"method": "_StartInkscape"
},
# TODO : Launch POEdit button
# PO -> SVG layers button
# SVG layers -> PO
# TODO : HMITree button
# - can drag'n'drop variabes to Inkscape
]
def _getSVGpath(self, project_path=None):
if project_path is None:
project_path = self.CTNPath()
return os.path.join(project_path, "svghmi.svg")
def OnCTNSave(self, from_project_path=None):
if from_project_path is not None:
shutil.copyfile(self._getSVGpath(from_project_path),
self._getSVGpath())
return True
def GetSVGGeometry(self):
# invoke inskscape -S, csv-parse output, produce elements
InkscapeGeomColumns = ["Id", "x", "y", "w", "h"]
inkpath = get_inkscape_path()
svgpath = self._getSVGpath()
status, result, _err_result = ProcessLogger(self.GetCTRoot().logger,
'"' + inkpath + '" -S "' + svgpath + '"',
no_stdout=True,
no_stderr=True).spin()
if status != 0:
self.FatalError("SVGHMI : inkscape couldn't extract geometry from given SVG")
res = []
for line in result.split():
strippedline = line.strip()
attrs = dict(
zip(InkscapeGeomColumns, line.strip().split(',')))
res.append(etree.Element("bbox", **attrs))
return res
def GetHMITree(self):
global hmi_tree_root
res = [hmi_tree_root.etree(add_hash=True)]
return res
def CTNGenerate_C(self, buildpath, locations):
location_str = "_".join(map(str, self.GetCurrentLocation()))
view_name = self.BaseParams.getName()
svgfile = self._getSVGpath()
res = ([], "", False)
target_fname = "svghmi_"+location_str+".xhtml"
target_path = os.path.join(self._getBuildPath(), target_fname)
target_file = open(target_path, 'wb')
if os.path.exists(svgfile):
# TODO : move to __init__
transform = XSLTransform(os.path.join(ScriptDirectory, "gen_index_xhtml.xslt"),
[("GetSVGGeometry", lambda *_ignored:self.GetSVGGeometry()),
("GetHMITree", lambda *_ignored:self.GetHMITree())])
# load svg as a DOM with Etree
svgdom = etree.parse(svgfile)
# call xslt transform on Inkscape's SVG to generate XHTML
try:
result = transform.transform(svgdom)
except XSLTApplyError as e:
self.FatalError("SVGHMI " + view_name + ": " + e.message)
finally:
for entry in transform.get_error_log():
message = "SVGHMI: "+ entry.message + "\n"
self.GetCTRoot().logger.write_warning(message)
result.write(target_file, encoding="utf-8")
# print(str(result))
# print(transform.xslt.error_log)
# TODO
# - Errors on HMI semantics
# - ... maybe something to have a global view of what is declared in SVG.
else:
# TODO : use default svg that expose the HMI tree as-is
target_file.write("""<!DOCTYPE html>
<html>
<body>
<h1> No SVG file provided </h1>
</body>
</html>
""")
target_file.close()
res += ((target_fname, open(target_path, "rb")),)
svghmi_cmds = {}
for thing in ["Start", "Stop", "Watchdog"]:
given_command = self.GetParamsAttributes("SVGHMI.On"+thing)["value"]
svghmi_cmds[thing] = (
"Popen(" +
repr(shlex.split(given_command.format(port="8008", name=view_name))) +
")") if given_command else "pass # no command given"
runtimefile_path = os.path.join(buildpath, "runtime_%s_svghmi_.py" % location_str)
runtimefile = open(runtimefile_path, 'w')
runtimefile.write("""
# TODO : multiple watchdog (one for each svghmi instance)
def svghmi_watchdog_trigger():
{svghmi_cmds[Watchdog]}
svghmi_watchdog = None
def _runtime_{location}_svghmi_start():
global svghmi_watchdog
svghmi_root.putChild(
'{view_name}',
NoCacheFile('{xhtml}',
defaultType='application/xhtml+xml'))
{svghmi_cmds[Start]}
svghmi_watchdog = Watchdog(
{watchdog_initial},
{watchdog_interval},
svghmi_watchdog_trigger)
def _runtime_{location}_svghmi_stop():
global svghmi_watchdog
if svghmi_watchdog is not None:
svghmi_watchdog.cancel()
svghmi_watchdog = None
svghmi_root.delEntity('{view_name}')
{svghmi_cmds[Stop]}
""".format(location=location_str,
xhtml=target_fname,
view_name=view_name,
svghmi_cmds=svghmi_cmds,
watchdog_initial = self.GetParamsAttributes("SVGHMI.WatchdogInitial")["value"],
watchdog_interval = self.GetParamsAttributes("SVGHMI.WatchdogInterval")["value"],
))
runtimefile.close()
res += (("runtime_%s_svghmi.py" % location_str, open(runtimefile_path, "rb")),)
return res
def _ImportSVG(self):
dialog = wx.FileDialog(self.GetCTRoot().AppFrame, _("Choose a SVG file"), os.getcwd(), "", _("SVG files (*.svg)|*.svg|All files|*.*"), wx.OPEN)
if dialog.ShowModal() == wx.ID_OK:
svgpath = dialog.GetPath()
if os.path.isfile(svgpath):
shutil.copy(svgpath, self._getSVGpath())
else:
self.GetCTRoot().logger.write_error(_("No such SVG file: %s\n") % svgpath)
dialog.Destroy()
def _StartInkscape(self):
svgfile = self._getSVGpath()
open_inkscape = True
if not self.GetCTRoot().CheckProjectPathPerm():
dialog = wx.MessageDialog(self.GetCTRoot().AppFrame,
_("You don't have write permissions.\nOpen Inkscape anyway ?"),
_("Open Inkscape"),
wx.YES_NO | wx.ICON_QUESTION)
open_inkscape = dialog.ShowModal() == wx.ID_YES
dialog.Destroy()
if open_inkscape:
if not os.path.isfile(svgfile):
svgfile = None
open_svg(svgfile)
def CTNGlobalInstances(self):
# view_name = self.BaseParams.getName()
# return [ (view_name + "_" + name, iec_type, "") for name, iec_type in SPECIAL_NODES]
# TODO : move to library level for multiple hmi
return [(name, iec_type, "") for name, iec_type in SPECIAL_NODES]