controls/DebugVariablePanel/GraphButton.py
author Edouard Tisserant
Thu, 04 Jun 2020 11:14:21 +0200
branchsvghmi
changeset 2980 2a21d6060d64
parent 1881 091005ec69c4
child 3303 0ffb41625592
permissions -rw-r--r--
SVGHMI: add "unsubscribable" property to widgets in order to generalize what already happens for jump buttons.
In most cases jump buttons do not really subscribe to pointed HMI variable, path is given as a relative page jump path. When widget.unsubscribable is set to true, no subscription is made on page switch, but still offset is updated.
This fixes bug happening on relative jump buttons without "disabled" element where offset did not change on relative page switch.
#!/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) 2012: 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.


from __future__ import absolute_import
import wx

from util.BitmapLibrary import GetBitmap

# -------------------------------------------------------------------------------
#                        Custom button for Graphic Viewer Class
# -------------------------------------------------------------------------------


class GraphButton(object):
    """
    Class that implements a custom button for graphic Viewer
    """

    def __init__(self, x, y, bitmap, callback):
        """
        Constructor
        @param x: X coordinate of Button in Graphic Viewer
        @param y: Y coordinate of Button in Graphic Viewer
        @param bitmap: Name of bitmap to use for button
        @param callback: Reference to function to call when button is pressed
        """
        # Save button position
        self.SetPosition(x, y)
        # Set button bitmap
        self.SetBitmap(bitmap)

        # By default button is hide and enabled
        self.Shown = False
        self.Enabled = True

        # Save reference to callback function
        self.Callback = callback

    def __del__(self):
        """
        Destructor
        """
        # Remove reference to callback function
        self.callback = None

    def SetBitmap(self, bitmap):
        """
        Set bitmap to use for button
        @param bitmap: Name of bitmap to use for button
        """
        # Get wx.Bitmap object corresponding to bitmap
        self.Bitmap = GetBitmap(bitmap)

    def GetSize(self):
        """
        Return size of button
        @return: wx.Size object containing button size
        """
        # Button size is size of bitmap
        return self.Bitmap.GetSize()

    def SetPosition(self, x, y):
        """
        Set button position
        @param x: X coordinate of Button in Graphic Viewer
        @param y: Y coordinate of Button in Graphic Viewer
        """
        self.Position = wx.Point(x, y)

    def Show(self, show=True):
        """
        Mark if button to be displayed in Graphic Viewer
        @param show: True if button to be displayed in Graphic Viewer
        (default True)
        """
        self.Shown = show

    def Hide(self):
        """
        Hide button from Graphic Viewer
        """
        self.Show(False)

    def IsShown(self):
        """
        Return if button is displayed in Graphic Viewer
        @return: True if button is displayed in Graphic Viewer
        """
        return self.Shown

    def Enable(self, enable=True):
        """
        Mark if button is active in Graphic Viewer
        @param enable: True if button is active in Graphic Viewer
        (default True)
        """
        self.Enabled = enable

    def Disable(self):
        """
        Deactivate button in Graphic Viewer
        """
        self.Enabled = False

    def IsEnabled(self):
        """
        Return if button is active in Graphic Viewer
        @return: True if button is active in Graphic Viewer
        """
        return self.Enabled

    def HitTest(self, x, y):
        """
        Test if point is inside button
        @param x: X coordinate of point
        @param y: Y coordinate of point
        @return: True if button is active and displayed and point is inside
        button
        """
        # Return immediately if button is hidden or inactive
        if not (self.IsShown() and self.IsEnabled()):
            return False

        # Test if point is inside button
        w, h = self.Bitmap.GetSize()
        rect = wx.Rect(self.Position.x, self.Position.y, w, h)
        return rect.InsideXY(x, y)

    def ProcessCallback(self):
        """
        Call callback function if defined
        """
        if self.Callback is not None:
            self.Callback()

    def Draw(self, dc):
        """
        Draw button in Graphic Viewer
        @param dc: wx.DC object corresponding to Graphic Viewer device context
        """
        # Only draw button if button is active and displayed
        if self.Shown and self.Enabled:
            dc.DrawBitmap(self.Bitmap, self.Position.x, self.Position.y, True)