util/BitmapLibrary.py
author alexander@60.125.16.172.in-addr.arpa
Tue, 23 Aug 2016 10:24:47 +0500
changeset 1518 a656ccb868d4
parent 815 e4f24593a758
child 1571 486f94a8032c
permissions -rw-r--r--
- Fixed startup from ancestor code.
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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#This file is part of PLCOpenEditor, a library implementing an IEC 61131-3 editor
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#based on the plcopen standard. 
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#
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#Copyright (C) 2012: 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 library is free software; you can redistribute it and/or
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#modify it under the terms of the GNU General Public
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#License as published by the Free Software Foundation; either
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#version 2.1 of the License, or (at your option) any later version.
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#
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#This library 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 GNU
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#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
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#License along with this library; if not, write to the Free Software
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#Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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import os
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import wx
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#-------------------------------------------------------------------------------
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#                            Library Structures
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#-------------------------------------------------------------------------------
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BitmapLibrary = {}
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BitmapFolders = []
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#-------------------------------------------------------------------------------
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#                             Library Helpers
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#-------------------------------------------------------------------------------
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def AddBitmapFolder(path):
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    if os.path.exists(path) and os.path.isdir(path) and path not in BitmapFolders:
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        BitmapFolders.append(path)
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def SearchBitmap(bmp_name):
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    for folder in BitmapFolders:
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        bmp_path = os.path.join(folder, bmp_name + ".png")
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        if os.path.isfile(bmp_path):
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            return wx.Bitmap(bmp_path)
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    return None
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def GetBitmap(bmp_name1, bmp_name2=None, size=None):
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    bmp = BitmapLibrary.get((bmp_name1, bmp_name2, size))
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    if bmp is not None:
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        return bmp
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    if bmp_name2 is None:
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        bmp = SearchBitmap(bmp_name1)
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    else:
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        # Bitmap with two icon
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        bmp1 = SearchBitmap(bmp_name1)
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        bmp2 = SearchBitmap(bmp_name2)
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        if bmp1 is not None and bmp2 is not None:
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            # Calculate bitmap size
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            width = bmp1.GetWidth() + bmp2.GetWidth() - 1
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            height = max(bmp1.GetHeight(), bmp2.GetHeight())
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            # Create bitmap with both icons
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            bmp = wx.EmptyBitmap(width, height)
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            dc = wx.MemoryDC()
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            dc.SelectObject(bmp)
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            dc.Clear()
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            dc.DrawBitmap(bmp1, 0, 0)
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            dc.DrawBitmap(bmp2, bmp1.GetWidth() - 1, 0)
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            dc.Destroy()
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        elif bmp1 is not None:
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            bmp = bmp1
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        elif bmp2 is not None:
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            bmp = bmp2
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    if bmp is not None:
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        BitmapLibrary[(bmp_name1, bmp_name2, size)] = bmp
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    return bmp