controls/EnhancedStatusBar.py
author Edouard Tisserant
Fri, 28 Feb 2020 16:09:21 +0100
branchsvghmi
changeset 2844 eee5dcd9fc92
parent 2453 9900a8df922f
child 3303 0ffb41625592
permissions -rw-r--r--
SVGHMI: detachable and discardable elements sets, Reworked geometric intersection, toward more accurate page content detection.

Moved page's widget/element dependency crawling functions so that it is possible to compute a global detachable and discardable elements sets.
Reworked geometric intersection detection logic to distinguish ovelapping and inclusion.
Goal is to include englobing and overlapping graphical elements, but not groups (would then include everything around...). Intermediate commit, to be continued.
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# --------------------------------------------------------------------------- #
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# ENHANCEDSTATUSBAR wxPython IMPLEMENTATION
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# Python Code By:
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#
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# Andrea Gavana, @ 31 May 2005
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# Nitro, @ 21 September 2005
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# Latest Revision: 21 September 2005, 19.57.20 GMT+2
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# Latest Revision before Latest Revision: 21 September 2005, 18.29.35 GMT+2
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# Latest Revision before Latest Revision before Latest Revision: 31 May 2005, 23.17 CET
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#
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#
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# TODO List/Caveats
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#
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# 1. Some Requests/Features To Add?
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#
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#
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# For All Kind Of Problems, Requests Of Enhancements And Bug Reports, Please
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# Write To Me At:
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#
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#
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# andrea.gavana@agip.it
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# andrea_gavan@tin.it
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#
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# Or, Obviously, To The wxPython Mailing List!!!
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#
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#
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# licensed under wxWidgets License (GPL compatible)
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# End Of Comments
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# --------------------------------------------------------------------------- #
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""" Description:
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EnhancedStatusBar Is A Slight Modification (Actually A Subclassing) Of wx.StatusBar.
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It Allows You To Add Almost Any Widget You Like To The wx.StatusBar Of Your Main
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Frame Application And Also To Layout Them Properly.
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What It Can Do:
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1) Almost All The Functionalities Of wx.StatusBar Are Still Present;
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2) You Can Add Different Kind Of Widgets Into Every Field Of The EnhancedStatusBar;
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3) The AddWidget() Methods Accepts 2 Layout Inputs:
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   - horizontalalignment: This Specify The Horizontal Alignment For Your Widget,
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     And Can Be ESB_EXACT_FIT, ESB_ALIGN_CENTER_HORIZONTAL, ESB_ALIGN_LEFT And
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     ESB_ALIGN_RIGHT;
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   - varticalalignment: This Specify The Vertical Alignment For Your Widget,
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     And Can Be ESB_EXACT_FIT, ESB_ALIGN_CENTER_VERTICAL, ESB_ALIGN_BOTTOM And
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     ESB_ALIGN_LEFT;
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EnhancedStatusBar Is Freeware And Distributed Under The wxPython License.
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Latest Revision: 21 September 2005, 19.57.20 GMT+2
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Latest Revision before Latest Revision: 21 September 2005, 18.29.35 GMT+2
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Latest Revision before Latest Revision before Latest Revision: 31 May 2005, 23.17 CET
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"""
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from __future__ import absolute_import
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from __future__ import division
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import wx
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# Horizontal Alignment Constants
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ESB_ALIGN_CENTER_VERTICAL = 1
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ESB_ALIGN_TOP = 2
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ESB_ALIGN_BOTTOM = 3
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# Vertical Alignment Constants
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ESB_ALIGN_CENTER_HORIZONTAL = 11
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ESB_ALIGN_LEFT = 12
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ESB_ALIGN_RIGHT = 13
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# Exact Fit (Either Horizontal Or Vertical Or Both) Constant
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ESB_EXACT_FIT = 20
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# ---------------------------------------------------------------
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# Class EnhancedStatusBar
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# ---------------------------------------------------------------
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# This Is The Main Class Implementation. See The Demo For Details
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# ---------------------------------------------------------------
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class EnhancedStatusBarItem(object):
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    def __init__(self, widget, pos, horizontalalignment=ESB_ALIGN_CENTER_HORIZONTAL, verticalalignment=ESB_ALIGN_CENTER_VERTICAL):
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        self.__dict__.update(locals())
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class EnhancedStatusBar(wx.StatusBar):
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    def __init__(self, parent, id=wx.ID_ANY, style=wx.ST_SIZEGRIP,
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                 name="EnhancedStatusBar"):
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        """Default Class Constructor.
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        EnhancedStatusBar.__init__(self, parent, id=wx.ID_ANY,
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                                   style=wx.ST_SIZEGRIP,
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                                   name="EnhancedStatusBar")
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        """
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        wx.StatusBar.__init__(self, parent, id, style, name)
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        self._items = {}
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        self._curPos = 0
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        self._parent = parent
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        wx.EVT_SIZE(self, self.OnSize)
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        wx.CallAfter(self.OnSize, None)
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    def OnSize(self, event):
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        """Handles The wx.EVT_SIZE Events For The StatusBar.
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        Actually, All The Calculations Linked To HorizontalAlignment And
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        VerticalAlignment Are Done In This Function."""
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        for pos, item in self._items.items():
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            widget, horizontalalignment, verticalalignment = item.widget, item.horizontalalignment, item.verticalalignment
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            rect = self.GetFieldRect(pos)
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            widgetsize = widget.GetSize()
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            rect = self.GetFieldRect(pos)
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            if horizontalalignment == ESB_EXACT_FIT:
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                if verticalalignment == ESB_EXACT_FIT:
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                    # 1 September 2015 Fix fit align
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                    widget.SetSize((rect.width-4, rect.height-4))
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                    widget.SetPosition((rect.x+2, rect.y+2))
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                elif verticalalignment == ESB_ALIGN_CENTER_VERTICAL:
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                    if widgetsize[1] < rect.width - 1:
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                        diffs = (rect.height - widgetsize[1])/2
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                        widget.SetSize((rect.width-2, widgetsize[1]))
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                        widget.SetPosition((rect.x-1, rect.y+diffs))
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                    else:
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                        widget.SetSize((rect.width-2, widgetsize[1]))
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                        widget.SetPosition((rect.x-1, rect.y-1))
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                elif verticalalignment == ESB_ALIGN_TOP:
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                    widget.SetSize((rect.width-2, widgetsize[1]))
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                    widget.SetPosition((rect.x-1, rect.y))
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                elif verticalalignment == ESB_ALIGN_BOTTOM:
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                    widget.SetSize((rect.width-2, widgetsize[1]))
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                    widget.SetPosition((rect.x-1, rect.height-widgetsize[1]))
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            elif horizontalalignment == ESB_ALIGN_LEFT:
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                xpos = rect.x - 1
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                if verticalalignment == ESB_EXACT_FIT:
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                    widget.SetSize((widgetsize[0], rect.height-2))
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                    widget.SetPosition((xpos, rect.y-1))
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                elif verticalalignment == ESB_ALIGN_CENTER_VERTICAL:
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                    if widgetsize[1] < rect.height - 1:
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                        diffs = (rect.height - widgetsize[1]) // 2
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                        widget.SetPosition((xpos, rect.y+diffs))
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                    else:
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                        widget.SetSize((widgetsize[0], rect.height-2))
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                        widget.SetPosition((xpos, rect.y-1))
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                elif verticalalignment == ESB_ALIGN_TOP:
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                    widget.SetPosition((xpos, rect.y))
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                elif verticalalignment == ESB_ALIGN_BOTTOM:
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                    widget.SetPosition((xpos, rect.height-widgetsize[1]))
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            elif horizontalalignment == ESB_ALIGN_RIGHT:
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                xpos = rect.x + rect.width - widgetsize[0] - 1
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                if verticalalignment == ESB_EXACT_FIT:
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                    widget.SetSize((widgetsize[0], rect.height-2))
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                    widget.SetPosition((xpos, rect.y-1))
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                elif verticalalignment == ESB_ALIGN_CENTER_VERTICAL:
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                    if widgetsize[1] < rect.height - 1:
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                        diffs = (rect.height - widgetsize[1]) // 2
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                        widget.SetPosition((xpos, rect.y+diffs))
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                    else:
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                        widget.SetSize((widgetsize[0], rect.height-2))
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                        widget.SetPosition((xpos, rect.y-1))
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                elif verticalalignment == ESB_ALIGN_TOP:
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                    widget.SetPosition((xpos, rect.y))
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                elif verticalalignment == ESB_ALIGN_BOTTOM:
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                    widget.SetPosition((xpos, rect.height-widgetsize[1]))
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            elif horizontalalignment == ESB_ALIGN_CENTER_HORIZONTAL:
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                xpos = rect.x + (rect.width - widgetsize[0]) // 2 - 1
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                if verticalalignment == ESB_EXACT_FIT:
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                    widget.SetSize((widgetsize[0], rect.height))
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                    widget.SetPosition((xpos, rect.y))
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                elif verticalalignment == ESB_ALIGN_CENTER_VERTICAL:
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                    if widgetsize[1] < rect.height - 1:
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                        diffs = (rect.height - widgetsize[1]) // 2
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                        widget.SetPosition((xpos, rect.y+diffs))
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                    else:
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                        widget.SetSize((widgetsize[0], rect.height-1))
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                        widget.SetPosition((xpos, rect.y+1))
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                elif verticalalignment == ESB_ALIGN_TOP:
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                    widget.SetPosition((xpos, rect.y))
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                elif verticalalignment == ESB_ALIGN_BOTTOM:
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                    widget.SetPosition((xpos, rect.height-widgetsize[1]))
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        if event is not None:
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            event.Skip()
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    def AddWidget(self, widget, horizontalalignment=ESB_ALIGN_CENTER_HORIZONTAL,
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                  verticalalignment=ESB_ALIGN_CENTER_VERTICAL, pos=-1):
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        """Add A Widget To The EnhancedStatusBar.
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        Parameters:
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        - horizontalalignment: This Can Be One Of:
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          a) ESB_EXACT_FIT: The Widget Will Fit Horizontally The StatusBar Field Width;
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          b) ESB_ALIGN_CENTER_HORIZONTAL: The Widget Will Be Centered Horizontally In
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             The StatusBar Field;
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          c) ESB_ALIGN_LEFT: The Widget Will Be Left Aligned In The StatusBar Field;
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          d) ESB_ALIGN_RIGHT: The Widget Will Be Right Aligned In The StatusBar Field;
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        - verticalalignment:
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          a) ESB_EXACT_FIT: The Widget Will Fit Vertically The StatusBar Field Height;
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          b) ESB_ALIGN_CENTER_VERTICAL: The Widget Will Be Centered Vertically In
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             The StatusBar Field;
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          c) ESB_ALIGN_BOTTOM: The Widget Will Be Bottom Aligned In The StatusBar Field;
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          d) ESB_ALIGN_TOP: The Widget Will Be TOP Aligned In The StatusBar Field;
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        """
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        if pos == -1:
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            pos = self._curPos
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            self._curPos += 1
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        if self.GetFieldsCount() <= pos:
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            raise ValueError("\nERROR: EnhancedStatusBar has a max of %d items, you tried to set item #%d" %
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                             (self.GetFieldsCount(), pos))
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        if horizontalalignment not in [ESB_ALIGN_CENTER_HORIZONTAL, ESB_EXACT_FIT,
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                                       ESB_ALIGN_LEFT, ESB_ALIGN_RIGHT]:
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            raise ValueError('\nERROR: Parameter "horizontalalignment" Should Be One Of '
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                             '"ESB_ALIGN_CENTER_HORIZONTAL", "ESB_ALIGN_LEFT", "ESB_ALIGN_RIGHT"'
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                             '"ESB_EXACT_FIT"')
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        if verticalalignment not in [ESB_ALIGN_CENTER_VERTICAL, ESB_EXACT_FIT,
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                                     ESB_ALIGN_TOP, ESB_ALIGN_BOTTOM]:
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            raise ValueError('\nERROR: Parameter "verticalalignment" Should Be One Of '
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                             '"ESB_ALIGN_CENTER_VERTICAL", "ESB_ALIGN_TOP", "ESB_ALIGN_BOTTOM"'
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                             '"ESB_EXACT_FIT"')
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        try:
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            self.RemoveChild(self._items[pos].widget)
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            self._items[pos].widget.Destroy()
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        except KeyError:
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            pass
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        self._items[pos] = EnhancedStatusBarItem(widget, pos, horizontalalignment, verticalalignment)
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        wx.CallAfter(self.OnSize, None)