svgui/svguilib.py
author Edouard Tisserant
Tue, 09 Apr 2019 13:05:35 +0200
changeset 2583 e172ab28d04e
parent 1872 866fb3ab8778
permissions -rw-r--r--
Continue fixing deadlock of previous commit, this time occuring when waiting for 'cleanup' python runtime call to finish. Now 'init' and 'cleanup' python runtime calls are called directly from main thread, and aren't anymore invoked in the context of wxMainloop and/or twisted reactor.
#!/usr/bin/env python
# -*- coding: utf-8 -*-

# This file is part of Beremiz, a Integrated Development Environment for
# programming IEC 61131-3 automates supporting plcopen standard and CanFestival.
#
# Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD
#
# See COPYING file for copyrights details.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.


# pylint: disable=old-style-class,undefined-variable


class button:

    def __init__(self, parent, id, args):
        self.parent = parent
        self.id = id
        self.back_elt = getSVGElementById(args.back_id)
        self.sele_elt = getSVGElementById(args.sele_id)
        self.toggle = args.toggle
        self.active = args.active
        if args.state != undefined:
            self.state = args.state
        else:
            self.state = False
        self.dragging = False
        if self.toggle:
            self.up = not self.state
        else:
            self.up = True

        # Add event on each element of the button
        if self.active:
            self.back_elt.addEventListener("mouseup", self, False)
            self.back_elt.addEventListener("mousedown", self, False)
            self.back_elt.addEventListener("mouseover", self, False)
            self.back_elt.addEventListener("mouseout", self, False)

            self.sele_elt.addEventListener("mouseup", self, False)
            self.sele_elt.addEventListener("mousedown", self, False)
            self.sele_elt.addEventListener("mouseover", self, False)
            self.sele_elt.addEventListener("mouseout", self, False)

        blockSVGElementDrag(self.back_elt)
        blockSVGElementDrag(self.sele_elt)

        self.updateElements()

    # method to display the current state of interface
    def updateElements(self):
        if self.up:
            self.sele_elt.setAttribute("display", "none")
            self.back_elt.removeAttribute("display")
        else:
            self.sele_elt.removeAttribute("display")
            self.back_elt.setAttribute("display", "none")

    def updateValues(self, values):
        if values.state != self.state:
            self.state = values.state
            self.up = not self.state
            if self.toggle:
                updateAttr(self.id, 'state', self.state)
            self.updateElements()

    def handleEvent(self, evt):
        # Quand le bouton de la souris est presse
        if evt.type == "mousedown":
            evt.stopPropagation()
            setCurrentObject(self)

            self.dragging = True

            if self.toggle:
                self.up = self.state
            else:
                self.up = False
                self.state = True
                updateAttr(self.id, 'state', self.state)
            self.updateElements()

        if isCurrentObject(self) and self.dragging:
            # Quand le bouton est survole
            if evt.type == "mouseover" and self.toggle:
                self.up = self.state
                self.updateElements()

            # Quand le curseur quitte la zone du bouton
            elif evt.type == "mouseout" and self.toggle:
                self.up = not self.state
                self.updateElements()

            # Quand le bouton de la souris est relache
            elif evt.type == "mouseup":
                evt.stopPropagation()
                if self.toggle and self.up == self.state:
                    self.state = not self.state
                    updateAttr(self.id, 'state', self.state)
                elif not self.toggle:
                    self.up = True
                    self.state = False
                    updateAttr(self.id, 'state', self.state)
                    self.updateElements()
                self.dragging = False


class textControl:

    def __init__(self, parent, id, args):
        self.parent = parent
        self.id = id
        self.back_elt = getSVGElementById(args.back_id)
        if args.text != undefined:
            self.text = args.text
        else:
            self.text = ""
        self.updateElements()

    def updateValues(self, values):
        if values.text != self.value:
            self.text = values.text
            updateAttr(self.id, 'text', self.text)
            self.updateElements()

    def updateElements(self):
        self.back_elt.firstChild.firstChild.textContent = self.text

    def handleEvent(self, evt):
        pass