controls/CustomTree.py
author Edouard Tisserant <edouard@beremiz.fr>
Tue, 06 Aug 2024 15:25:57 +0200
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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# This file is part of Beremiz, a Integrated Development Environment for
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# programming IEC 61131-3 automates supporting plcopen standard and CanFestival.
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#
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# Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD
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#
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# See COPYING file for copyrights details.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (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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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
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import wx
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import wx.lib.agw.customtreectrl as CT
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from util.BitmapLibrary import GetBitmap
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# Customize CustomTreeItem for adding icon on item left
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CT.GenericTreeItem._ExtraImage = None
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def SetExtraImage(self, image):
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    self._type = (1 if image is not None else 0)
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    self._ExtraImage = image
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CT.GenericTreeItem.SetExtraImage = SetExtraImage
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_DefaultGetCurrentCheckedImage = CT.GenericTreeItem.GetCurrentCheckedImage
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def GetCurrentCheckedImage(self):
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    if self._ExtraImage is not None:
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        return self._ExtraImage
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    return _DefaultGetCurrentCheckedImage(self)
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CT.GenericTreeItem.GetCurrentCheckedImage = GetCurrentCheckedImage
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class CustomTree(CT.CustomTreeCtrl):
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    def __init__(self, *args, **kwargs):
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        CT.CustomTreeCtrl.__init__(self, *args, **kwargs)
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        self.BackgroundBitmap = None
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        self.BackgroundAlign = wx.ALIGN_LEFT | wx.ALIGN_TOP
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        self.AddMenu = None
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        self.Enabled = False
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        self.Bind(wx.EVT_SCROLLWIN, self.OnScroll)
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        self.Bind(wx.EVT_LEFT_UP, self.OnLeftUp)
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    def SetBackgroundBitmap(self, bitmap, align):
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        self.BackgroundBitmap = bitmap
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        self.BackgroundAlign = align
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    def SetImageListCheck(self, sizex, sizey, imglist=None):
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        CT.CustomTreeCtrl.SetImageListCheck(self, sizex, sizey, imglist=None)
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        self.ExtraImages = {}
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        for image in ["function", "functionBlock", "program"]:
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            self.ExtraImages[image] = self._imageListCheck.Add(GetBitmap(image.upper()))
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    def SetItemExtraImage(self, item, bitmap):
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        dc = wx.ClientDC(self)
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        image = self.ExtraImages.get(bitmap)
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        if image is not None:
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            item.SetExtraImage(image)
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        else:
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            item.SetExtraImage(None)
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        self.CalculateSize(item, dc)
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        self.RefreshLine(item)
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    def SetAddMenu(self, add_menu):
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        self.AddMenu = add_menu
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    def Enable(self, enabled):
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        self.Enabled = enabled
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    def GetBitmapRect(self):
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        client_size = self.GetClientSize()
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        bitmap_size = self.BackgroundBitmap.GetSize()
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        if self.BackgroundAlign & wx.ALIGN_RIGHT:
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            x = client_size[0] - bitmap_size[0]
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        elif self.BackgroundAlign & wx.ALIGN_CENTER_HORIZONTAL:
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            x = (client_size[0] - bitmap_size[0]) // 2
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        else:
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            x = 0
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        if self.BackgroundAlign & wx.ALIGN_BOTTOM:
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            y = client_size[1] - bitmap_size[1]
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        elif self.BackgroundAlign & wx.ALIGN_CENTER_VERTICAL:
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            y = (client_size[1] - bitmap_size[1]) // 2
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        else:
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            y = 0
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        return wx.Rect(x, y, bitmap_size[0], bitmap_size[1])
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    def OnLeftUp(self, event):
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        if self.Enabled:
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            pos = event.GetPosition()
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            _item, flags = self.HitTest(pos)
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            bitmap_rect = self.GetBitmapRect()
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            if ((bitmap_rect.Contains(pos.x, pos.y) or
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                 flags & wx.TREE_HITTEST_NOWHERE) and self.AddMenu is not None):
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                wx.CallAfter(self.PopupMenu, self.AddMenu, pos.x, pos.y)
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        event.Skip()
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    def OnEraseBackground(self, event):
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        dc = event.GetDC()
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        if not dc:
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            dc = wx.ClientDC(self)
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            rect = self.GetUpdateRegion().GetBox()
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            dc.SetClippingRect(rect)
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        dc.Clear()
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        bitmap_rect = self.GetBitmapRect()
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        dc.DrawBitmap(self.BackgroundBitmap, bitmap_rect.x, bitmap_rect.y)
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    def OnScroll(self, event):
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        wx.CallAfter(self.Refresh)
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        event.Skip()
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    def OnSize(self, event):
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        CT.CustomTreeCtrl.OnSize(self, event)
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        self.Refresh()