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.grid
if wx.Platform == '__WXMSW__':
ROW_HEIGHT = 20
else:
ROW_HEIGHT = 28
class CustomTable(wx.grid.PyGridTableBase):
"""
A custom wx.grid.Grid Table using user supplied data
"""
def __init__(self, parent, data, colnames):
# The base class must be initialized *first*
wx.grid.PyGridTableBase.__init__(self)
self.data = data
self.colnames = colnames
self.Highlights = {}
self.Parent = parent
# XXX
# we need to store the row length and collength to
# see if the table has changed size
self._rows = self.GetNumberRows()
self._cols = self.GetNumberCols()
def GetNumberCols(self):
return len(self.colnames)
def GetNumberRows(self):
return len(self.data)
def GetColLabelValue(self, col, translate=True):
if col < len(self.colnames):
if translate:
return _(self.colnames[col])
return self.colnames[col]
def GetRowLabelValue(self, row, translate=True):
return row
def GetValue(self, row, col):
if row < self.GetNumberRows():
return self.data[row].get(self.GetColLabelValue(col, False), "")
def SetValue(self, row, col, value):
if col < len(self.colnames):
self.data[row][self.GetColLabelValue(col, False)] = value
def GetValueByName(self, row, colname):
if row < self.GetNumberRows():
return self.data[row].get(colname)
def SetValueByName(self, row, colname, value):
if row < self.GetNumberRows():
self.data[row][colname] = value
def ResetView(self, grid):
"""
(wx.grid.Grid) -> Reset the grid view. Call this to
update the grid if rows and columns have been added or deleted
"""
grid.CloseEditControl()
grid.BeginBatch()
for current, new, delmsg, addmsg in [
(
self._rows,
self.GetNumberRows(),
wx.grid.GRIDTABLE_NOTIFY_ROWS_DELETED,
wx.grid.GRIDTABLE_NOTIFY_ROWS_APPENDED
),
(
self._cols,
self.GetNumberCols(),
wx.grid.GRIDTABLE_NOTIFY_COLS_DELETED,
wx.grid.GRIDTABLE_NOTIFY_COLS_APPENDED
),
]:
if new < current:
msg = wx.grid.GridTableMessage(self, delmsg, new, current-new)
grid.ProcessTableMessage(msg)
elif new > current:
msg = wx.grid.GridTableMessage(self, addmsg, new-current)
grid.ProcessTableMessage(msg)
self.UpdateValues(grid)
grid.EndBatch()
self._rows = self.GetNumberRows()
self._cols = self.GetNumberCols()
# update the column rendering scheme
self._updateColAttrs(grid)
# update the scrollbars and the displayed part of the grid
grid.AdjustScrollbars()
grid.ForceRefresh()
def UpdateValues(self, grid):
"""Update all displayed values"""
# This sends an event to the grid table to update all of the values
msg = wx.grid.GridTableMessage(self, wx.grid.GRIDTABLE_REQUEST_VIEW_GET_VALUES)
grid.ProcessTableMessage(msg)
def _updateColAttrs(self, grid):
"""
wx.grid.Grid -> update the column attributes to add the
appropriate renderer given the column name.
Otherwise default to the default renderer.
"""
for row in range(self.GetNumberRows()):
row_highlights = self.Highlights.get(row, {})
for col in range(self.GetNumberCols()):
colname = self.GetColLabelValue(col, False)
grid.SetReadOnly(row, col, True)
grid.SetCellEditor(row, col, None)
grid.SetCellRenderer(row, col, None)
highlight_colours = row_highlights.get(colname.lower(), [(wx.WHITE, wx.BLACK)])[-1]
grid.SetCellBackgroundColour(row, col, highlight_colours[0])
grid.SetCellTextColour(row, col, highlight_colours[1])
self.ResizeRow(grid, row)
def ResizeRow(self, grid, row):
if grid.GetRowSize(row) < ROW_HEIGHT:
grid.SetRowMinimalHeight(row, ROW_HEIGHT)
grid.AutoSizeRow(row, False)
def SetData(self, data):
self.data = data
def GetData(self):
return self.data
def GetCurrentIndex(self):
return self.CurrentIndex
def SetCurrentIndex(self, index):
self.CurrentIndex = index
def AppendRow(self, row_content):
self.data.append(row_content)
def InsertRow(self, index, row_content):
self.data.insert(index, row_content)
def MoveRow(self, row_index, move):
new_index = max(0, min(row_index + move, len(self.data) - 1))
if new_index != row_index:
self.data.insert(new_index, self.data.pop(row_index))
return new_index
def RemoveRow(self, row_index):
self.data.pop(row_index)
def GetRow(self, row_index):
return self.data[row_index]
def Empty(self):
self.data = []
def AddHighlight(self, infos, highlight_type):
row_highlights = self.Highlights.setdefault(infos[0], {})
col_highlights = row_highlights.setdefault(infos[1], [])
col_highlights.append(highlight_type)
def RemoveHighlight(self, infos, highlight_type):
row_highlights = self.Highlights.get(infos[0])
if row_highlights is not None:
col_highlights = row_highlights.get(infos[1])
if col_highlights is not None and highlight_type in col_highlights:
col_highlights.remove(highlight_type)
if len(col_highlights) == 0:
row_highlights.pop(infos[1])
def ClearHighlights(self, highlight_type=None):
if highlight_type is None:
self.Highlights = {}
else:
for _row, row_highlights in self.Highlights.iteritems():
row_items = row_highlights.items()
for col, col_highlights in row_items:
if highlight_type in col_highlights:
col_highlights.remove(highlight_type)
if len(col_highlights) == 0:
row_highlights.pop(col)