beremiz

make clipboard open minimal time as wxPython documentation recommends

2018-05-25, Andrey Skvortsov
5ce6d08ff2c7
make clipboard open minimal time as wxPython documentation recommends

https://wxpython.org/Phoenix/docs/html/wx.Clipboard.html#wx.Clipboard.GetData

"Call wx.Clipboard.Open to get ownership of the clipboard. If this
operation returns True, you now own the clipboard. Call
wx.Clipboard.SetData to put data on the clipboard, or
wx.Clipboard.GetData to retrieve data from the clipboard. Call
wx.Clipboard.Close to close the clipboard and relinquish ownership.
You should keep the clipboard open only momentarily."

Maybe it makes situation with pretty annoying error 'clipboard already
open' a little bit better.

traceback:
File "/home/developer/WorkData/PLC/beremiz/avangard-beremiz-ide/src/../../beremiz/BeremizIDE.py", line 955, in OnSaveProjectMenu
self.RefreshAfterSave()
File "/home/developer/WorkData/PLC/beremiz/avangard-beremiz-ide/src/../../beremiz/BeremizIDE.py", line 946, in RefreshAfterSave
self._Refresh(TITLE, FILEMENU, EDITMENU, PAGETITLES)
File "/home/developer/WorkData/PLC/beremiz/avangard-beremiz-ide/src/../../beremiz/IDEFrame.py", line 926, in _Refresh
self.RefreshFunctions[element]()
File "/home/developer/WorkData/PLC/beremiz/avangard-beremiz-ide/src/../../beremiz/BeremizIDE.py", line 766, in RefreshEditMenu
IDEFrame.RefreshEditMenu(self)
File "/home/developer/WorkData/PLC/beremiz/avangard-beremiz-ide/src/../../beremiz/IDEFrame.py", line 1185, in RefreshEditMenu
if self.GetCopyBuffer() is not None:
File "/home/developer/WorkData/PLC/beremiz/avangard-beremiz-ide/src/../../beremiz/IDEFrame.py", line 956, in GetCopyBuffer
if wx.TheClipboard.Open():
File "/usr/lib/python2.7/dist-packages/wx-3.0-gtk3/wx/_misc.py", line 5793, in Open
return _misc_.Clipboard_Open(*args, **kwargs)
: C++ assertion "!m_open" failed at ../src/gtk/clipbrd.cpp(598) in Open(): clipboard already open
#!/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.
from __future__ import absolute_import
import wx
import wx.lib.agw.customtreectrl as CT
from util.BitmapLibrary import GetBitmap
# Customize CustomTreeItem for adding icon on item left
CT.GenericTreeItem._ExtraImage = None
def SetExtraImage(self, image):
self._type = (1 if image is not None else 0)
self._ExtraImage = image
CT.GenericTreeItem.SetExtraImage = SetExtraImage
_DefaultGetCurrentCheckedImage = CT.GenericTreeItem.GetCurrentCheckedImage
def GetCurrentCheckedImage(self):
if self._ExtraImage is not None:
return self._ExtraImage
return _DefaultGetCurrentCheckedImage(self)
CT.GenericTreeItem.GetCurrentCheckedImage = GetCurrentCheckedImage
class CustomTree(CT.CustomTreeCtrl):
def __init__(self, *args, **kwargs):
CT.CustomTreeCtrl.__init__(self, *args, **kwargs)
self.BackgroundBitmap = None
self.BackgroundAlign = wx.ALIGN_LEFT | wx.ALIGN_TOP
self.AddMenu = None
self.Enabled = False
self.Bind(wx.EVT_SCROLLWIN, self.OnScroll)
self.Bind(wx.EVT_LEFT_UP, self.OnLeftUp)
def SetBackgroundBitmap(self, bitmap, align):
self.BackgroundBitmap = bitmap
self.BackgroundAlign = align
def SetImageListCheck(self, sizex, sizey, imglist=None):
CT.CustomTreeCtrl.SetImageListCheck(self, sizex, sizey, imglist=None)
self.ExtraImages = {}
for image in ["function", "functionBlock", "program"]:
self.ExtraImages[image] = self._imageListCheck.Add(GetBitmap(image.upper()))
def SetItemExtraImage(self, item, bitmap):
dc = wx.ClientDC(self)
image = self.ExtraImages.get(bitmap)
if image is not None:
item.SetExtraImage(image)
else:
item.SetExtraImage(None)
self.CalculateSize(item, dc)
self.RefreshLine(item)
def SetAddMenu(self, add_menu):
self.AddMenu = add_menu
def Enable(self, enabled):
self.Enabled = enabled
def GetBitmapRect(self):
client_size = self.GetClientSize()
bitmap_size = self.BackgroundBitmap.GetSize()
if self.BackgroundAlign & wx.ALIGN_RIGHT:
x = client_size[0] - bitmap_size[0]
elif self.BackgroundAlign & wx.ALIGN_CENTER_HORIZONTAL:
x = (client_size[0] - bitmap_size[0]) / 2
else:
x = 0
if self.BackgroundAlign & wx.ALIGN_BOTTOM:
y = client_size[1] - bitmap_size[1]
elif self.BackgroundAlign & wx.ALIGN_CENTER_VERTICAL:
y = (client_size[1] - bitmap_size[1]) / 2
else:
y = 0
return wx.Rect(x, y, bitmap_size[0], bitmap_size[1])
def OnLeftUp(self, event):
if self.Enabled:
pos = event.GetPosition()
_item, flags = self.HitTest(pos)
bitmap_rect = self.GetBitmapRect()
if ((bitmap_rect.InsideXY(pos.x, pos.y) or
flags & wx.TREE_HITTEST_NOWHERE) and self.AddMenu is not None):
wx.CallAfter(self.PopupMenuXY, self.AddMenu, pos.x, pos.y)
event.Skip()
def OnEraseBackground(self, event):
dc = event.GetDC()
if not dc:
dc = wx.ClientDC(self)
rect = self.GetUpdateRegion().GetBox()
dc.SetClippingRect(rect)
dc.Clear()
bitmap_rect = self.GetBitmapRect()
dc.DrawBitmap(self.BackgroundBitmap, bitmap_rect.x, bitmap_rect.y)
def OnScroll(self, event):
wx.CallAfter(self.Refresh)
event.Skip()
def OnSize(self, event):
CT.CustomTreeCtrl.OnSize(self, event)
self.Refresh()