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Wang Dequan
185
lib/python/gladevcp/overridewidget.py
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185
lib/python/gladevcp/overridewidget.py
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#!/usr/bin/env python3
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# GladeVcp Widget - override widget
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# This widgets controls linuxcnc's override rate
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#
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# Copyright (c) 2015 Chris Morley
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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import sys,os
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import linuxcnc
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import gi
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gi.require_version('Gtk', '3.0')
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from gi.repository import Gtk
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from gi.repository import GObject
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from gi.repository import GLib
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INIPATH = os.environ.get('INI_FILE_NAME', '/dev/null')
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class Override(Gtk.Scale):
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__gtype_name__ = 'Override'
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__gproperties__ = {
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'override_type' : ( GObject.TYPE_INT, 'Override Type', '0: Feed 1: Rapid 2: Spindle 3: Max velocity',
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0, 3, 0, GObject.ParamFlags.READWRITE | GObject.ParamFlags.CONSTRUCT),
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}
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__gproperties = __gproperties__
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def __init__(self, *a, **kw):
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Gtk.Scale.__init__(self, *a, **kw)
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self.emc = linuxcnc
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self.status = self.emc.stat()
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self.cmd = linuxcnc.command()
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self.override_type = 0
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self.override = 1.0
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self.max_vel_convert = 100
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self.adjustment = Gtk.Adjustment(value=100, lower=0, upper=200, step_incr=1, page_incr=0, page_size=0)
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self.set_type(self.override_type)
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self.set_adjustment(self.adjustment)
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self.set_digits(0)
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self.set_value_pos(Gtk.PositionType.LEFT)
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#self.add_mark(100.0,Gtk.PositionType.LEFT,'')
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self.connect('value-changed',self.update_value)
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# The update time: every 100 milliseconds
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GLib.timeout_add(100, self.periodic)
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# we set the adjustment limits based on the INI entries
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def set_type(self, data=0):
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adjustment = self.get_adjustment()
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self.override_type = data
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self.inifile = self.emc.ini(INIPATH)
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if self.override_type == 0:
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MAXFEED = self.inifile.getreal("DISPLAY","MAX_FEED_OVERRIDE", fallback=2.0)
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#print 'feed',MAXFEED
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adjustment.set_upper(MAXFEED*100)
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adjustment.set_lower(0)
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elif self.override_type == 1:
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#print 'rapid'
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adjustment.set_upper(100)
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adjustment.set_lower(0)
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elif self.override_type == 2:
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MINSPINDLE = self.inifile.getreal("DISPLAY","MIN_SPINDLE_OVERRIDE", fallback=0.5)
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#print 'mins',MINSPINDLE
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MAXSPINDLE = self.inifile.getreal("DISPLAY","MAX_SPINDLE_OVERRIDE", fallback=1.5)
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#print 'maxs',MAXSPINDLE
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adjustment.set_upper(MAXSPINDLE*100)
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adjustment.set_lower(MINSPINDLE*100)
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elif self.override_type == 3:
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MAXVEL = self.inifile.getreal("TRAJ","MAX_LINEAR_VELOCITY", fallback=100)
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#print 'maxv',MAXVEL,MAXVEL/100.0
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self.max_vel_convert = MAXVEL/100.0
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adjustment.set_upper(100)
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adjustment.set_lower(0)
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# This is a signal callback that commands linuxcnc based on the current
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# scale position
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def update_value(self, widget):
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data = widget.get_value()
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if not self.override_type == 3:
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data=data/100
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else:
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data=data*self.max_vel_convert
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#print data,self.override_type ,self.adjustment
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if self.override_type == 0:
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self.cmd.feedrate(data)
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elif self.override_type == 1:
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self.cmd.rapidrate(data)
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elif self.override_type == 2:
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self.cmd.spindleoverride(data)
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elif self.override_type == 3:
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self.cmd.maxvel(data)
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return True
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# This runs runs at the gooject timeout rate
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# it polls linuxcnc to get the current data
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# and updates the scale to refleck the current value.
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# in this way if eg HALUI is used to set an override the
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# scale will track it.
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def periodic(self):
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try:
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self.status.poll()
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if self.override_type == 0:
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self.override = self.status.feedrate
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elif self.override_type == 1:
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self.override = self.status.rapidrate
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elif self.override_type == 2:
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self.override = self.status.spindlerate
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elif self.override_type == 3:
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self.override = self.status.max_velocity
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# max velocity is not based on % so must be converted
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if not self.override_type == 3:
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self.set_value(self.override*100)
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else:
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self.set_value(self.override/self.max_vel_convert)
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except:
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pass
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return True
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# This is so GLADE can get the values for the editor
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# A user can use this too using gobject
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def do_get_property(self, property):
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name = property.name.replace('-', '_')
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if name in list(self.__gproperties.keys()):
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return getattr(self, name)
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else:
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raise AttributeError('unknown property %s' % property.name)
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# This is used by GLADE editor to set values
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def do_set_property(self, property, value):
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name = property.name.replace('-', '_')
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if name in list(self.__gproperties.keys()):
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setattr(self, name, value)
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if name == 'override_type':
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self.set_type(value)
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else:
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raise AttributeError('unknown property %s' % property.name)
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# for testing without glade editor:
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def main():
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window = Gtk.Dialog("My dialog",
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None,
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modal = True,
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destroy_with_parent = True)
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window.add_buttons(Gtk.STOCK_CANCEL, Gtk.ResponseType.REJECT,
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Gtk.STOCK_OK, Gtk.ResponseType.ACCEPT)
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t = Gtk.Grid()
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t.set_column_homogeneous(True)
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t.set_row_homogeneous(True)
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window.vbox.add(t)
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offset1 = Override()
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offset1.set_type(0)
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t.attach(offset1, 0, 0, 1, 1)
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offset2 = Override()
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offset2.set_type(1)
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t.attach(offset2, 0, 1, 1, 1)
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offset3 = Override()
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offset3.set_type(2)
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t.attach(offset3, 0, 2, 1, 1)
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offset4 = Override()
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offset4.set_type(3)
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t.attach(offset4, 0, 3, 1, 1)
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window.connect("destroy", Gtk.main_quit)
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window.show_all()
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response = window.run()
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if response == Gtk.ResponseType.ACCEPT:
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print("ok")
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else:
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print("cancel")
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if __name__ == "__main__":
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main()
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