SVGHMI: Widget DnD to Inkscape : Added source SVG widget label parsing and pass selecte HMI subtree to XSLT tranform, so that SVG containing multiple widgets can later be matched against hmi tree fragments, in order to DnD complex groups of widgets.
<?xml version='1.0' encoding='utf-8'?>
<PyFile xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<variables>
<variable name="AlarmNotify" type="HMI_INT"/>
<variable name="SendAlarm" type="HMI_INT" onchange="TriggerAlarm"/>
<variable name="AlarmText" type="HMI_STRING" initial="'POS'"/>
<variable name="AlarmStatus" type="HMI_STRING" initial="'alarm'"/>
</variables>
<globals>
<xhtml:p><![CDATA[
from twisted.web.resource import Resource
import json, time, random, collections
Alarms = []
AlarmIndex = {}
lastid = 0
def TriggerAlarm(changed_var_name):
global Alarms, lastid
new_entry = [time.time(), PLCGlobals.AlarmText, PLCGlobals.AlarmStatus, lastid]
Alarms.append(new_entry)
AlarmIndex[lastid] = new_entry
lastid = lastid + 1
PLCGlobals.AlarmNotify = random.randint(0, 4294967296)
class AlarmJsonResource(Resource):
def render_GET(self, request):
return ''
def render_POST(self, request):
newstr = request.content.getvalue()
newdata = json.loads(newstr)
args = newdata[u'args']
range_feedback = newdata[u'range']
slider_position = newdata[u'position']
visible = newdata[u'visible']
extra = newdata[u'extra']
options = newdata[u'options']
if len(options) == 2 :
action, alarmid = options
if action == "onClick[acknowledge]":
AlarmIndex[int(alarmid)][2] = "ack"
answer = self.renderTable(range_feedback, slider_position, visible, extra)
janswer = json.dumps(answer)
return janswer
def renderTable(self, old_range, old_position, visible, extra):
if len(extra) > 0 and extra[0] != "":
fAlarms = [alrm for alrm in Alarms if alrm[1].find(extra[0])!=-1]
else:
fAlarms = Alarms
new_range = len(fAlarms)
delta = new_range - visible
new_position = 0 if delta <= 0 else delta if old_position > delta else old_position
new_visible = new_range if delta <= 0 else visible
visible_alarms = []
for ts, text, status, alarmid in fAlarms[new_position:new_position + new_visible]:
visible_alarms.append({
"time": time.ctime(ts),
"text": text, # TODO translate text
"status": status,
"alarmid": alarmid
})
return new_range, new_position, visible_alarms
]]></xhtml:p>
</globals>
<init>
<xhtml:p><![CDATA[
]]></xhtml:p>
</init>
<cleanup>
<xhtml:p><![CDATA[
]]></xhtml:p>
</cleanup>
<start>
<xhtml:p><![CDATA[
svghmi_root.putChild("alarms", AlarmJsonResource())
]]></xhtml:p>
</start>
<stop>
<xhtml:p><![CDATA[
]]></xhtml:p>
</stop>
</PyFile>