Source code for camelot.view.export.excel

#  ============================================================================
#
#  Copyright (C) 2007-2011 Conceptive Engineering bvba. All rights reserved.
#  www.conceptive.be / project-camelot@conceptive.be
#
#  This file is part of the Camelot Library.
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#  This file may be used under the terms of the GNU General Public
#  License version 2.0 as published by the Free Software Foundation
#  and appearing in the file license.txt included in the packaging of
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#  General Public Licensing requirements will be met.
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#  If you are unsure which license is appropriate for your use, please
#  visit www.python-camelot.com or contact project-camelot@conceptive.be
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#  This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
#  WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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#  For use of this library in commercial applications, please contact
#  project-camelot@conceptive.be
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#  ============================================================================

import logging
import datetime
from decimal import Decimal

LOGGER = logging.getLogger('camelot.view.export.excel')

from camelot.core.utils import ugettext
from camelot.core.conf import settings
from camelot.view.controls import delegates
from camelot.view.utils import local_date_format

# previously used pyExcelerator, but this gave errors opening the generated documents in Excel 2010
from xlwt import Font, Borders, XFStyle, Pattern, Workbook, ExcelFormula

titleFont = Font()              # initializing titleFont Object
headerFont = Font()             # initializing headerFont Object
cellFont = Font()               # initializing cellFont Object

# when you need a specific font or size, declare this in your settings file
fontname = 'Arial'
if hasattr(settings, 'EXPORT_EXCEL_FONT'):
    fontname = settings.EXPORT_EXCEL_FONT
titleFont.name = fontname        # Setting Fonts Name
headerFont.name = fontname
cellFont.name = fontname

title_bold = True
header_bold = True
cell_bold = False
if hasattr(settings, 'EXPORT_EXCEL_TITLE_BOLD'):
    title_bold = settings.EXPORT_EXCEL_TITLE_BOLD
if hasattr(settings, 'EXPORT_EXCEL_HEADER_BOLD'):
    header_bold = settings.EXPORT_EXCEL_HEADER_BOLD
if hasattr(settings, 'EXPORT_EXCEL_CELL_BOLD'):
    cell_bold = settings.EXPORT_EXCEL_CELL_BOLD
titleFont.bold = title_bold           # Setting title font to bold
headerFont.bold = header_bold          # Setting column header font to bold
cellFont.bold = cell_bold           # Setting cell font to bold

titlesize = 240 # 12*20 = 240 Font Size
fontsize = 200# 10*20 = 200 Font Size
if hasattr(settings, 'EXPORT_EXCEL_TITLE_SIZE'):
    titlesize = settings.EXPORT_EXCEL_TITLE_SIZE
if hasattr(settings, 'EXPORT_EXCEL_FONT_SIZE'):
    fontsize = settings.EXPORT_EXCEL_FONT_SIZE
titleFont.height = titlesize          
headerFont.height = fontsize         
cellFont.height = fontsize

brdLeft = Borders()                # Defining border which is around header
brdLeft.left = 0x01

brdRight = Borders()                # Defining border which is around header
brdRight.right = 0x01

brdTop = Borders()                # Defining border which is around header
brdTop.top = 0x01

brdBottom = Borders()                # Defining border which is around header
brdBottom.bottom = 0x01

brdTopLeft = Borders()
brdTopLeft.top = 0x01
brdTopLeft.left = 0x01

brdBottomLeft = Borders()
brdBottomLeft.bottom = 0x01
brdBottomLeft.left = 0x01

brdBottomRight = Borders()
brdBottomRight.bottom = 0x01
brdBottomRight.right = 0x01

brdTopRight = Borders()
brdTopRight.top = 0x01
brdTopRight.right = 0x01

dateStyle = XFStyle()


titleStyle = XFStyle()
headerStyle = XFStyle()
cellStyle = XFStyle()
dateStyle = XFStyle()

leftCellStyle = XFStyle()
rightCellStyle = XFStyle()
bottomCellStyle = XFStyle()
topleftCellStyle = XFStyle()
bottomleftCellStyle = XFStyle()
bottomrightCellStyle = XFStyle()
toprightCellStyle = XFStyle()

titleStyle.font = titleFont
headerStyle.font = headerFont
headerStyle.borders = brdTop
cellStyle.font = cellFont

topleftCellStyle.font = headerFont
topleftCellStyle.borders = brdTopLeft

bottomleftCellStyle.font = cellFont
bottomleftCellStyle.borders = brdBottomLeft

bottomrightCellStyle.font = cellFont
bottomrightCellStyle.borders = brdBottomRight

toprightCellStyle.font = headerFont
toprightCellStyle.borders = brdTopRight

leftCellStyle.borders = brdLeft
leftCellStyle.font = cellFont

rightCellStyle.borders = brdRight
rightCellStyle.font = cellFont

bottomCellStyle.borders = brdBottom
bottomCellStyle.font = cellFont

pat1 = Pattern()
pat1.pattern = Pattern.SOLID_PATTERN
pat1.pattern_fore_colour = 0x16
headerStyle.pattern = pat1
topleftCellStyle.pattern = pat1
toprightCellStyle.pattern = pat1

[docs]def open_data_with_excel(title, headerList, dataList): import tempfile _xls_fd, xls_fn = tempfile.mkstemp(suffix='.xls') write_data_to_excel(xls_fn, title, headerList, dataList) from PyQt4 import QtGui, QtCore QtGui.QDesktopServices.openUrl( QtCore.QUrl.fromLocalFile( xls_fn ) )
[docs]def write_data_to_excel(filename, title, headerList, data_list): """ @param filename: the file to which to save the exported excel @param title: title to put in the first row of the genarated excel file @param headerList: list of header definitions @param data_list: list or generator with the row data """ LOGGER.debug(u'write data to excel : %s'%title) w = Workbook() ws = w.add_sheet('Sheet1') ## Writing Title ws.write(0, 0, title, titleStyle) # Writing Title ws.col(0).width = len(title) * 400 # Setting cell width ## Writing Header myDataTypeDict = {} # dictionary of datatype, {columnnumber, Datatype} myPrecisionDict = {} # dictionary of precision , {columnnumber, Precision} myLengthDict = {} # dictionary of length , {columnnumber, length} myFormatDict = {} # dictionary of dateformat , {columnnumber, format} header_delegates = {} number_of_columns = len(headerList) for n,desc in enumerate(headerList): lst = desc[1] header_delegates[n] = lst['delegate'] if n==0: ws.write(2, n, unicode(lst['name']), topleftCellStyle) elif n==len(headerList)-1: ws.write(2, n, unicode(lst['name']), toprightCellStyle) else: ws.write(2, n, unicode(lst['name']), headerStyle) if len(unicode(lst['name'])) < 8: ws.col(n).width = 8 * 375 else: ws.col(n).width = len(unicode(lst['name'])) * 375 myDataTypeDict[ n ] = lst["python_type"] if lst["python_type"] == float: myPrecisionDict [ n ] = lst["precision"] #Populating precision dictionary elif issubclass(lst['delegate'], delegates.FloatDelegate): myPrecisionDict [ n ] = lst.get("precision", 2) myDataTypeDict[ n ] = float elif lst["python_type"] == datetime.date or issubclass(lst['delegate'], delegates.DateDelegate): myFormatDict [ n ] = lst.get('format', local_date_format()) #Populating date Format dictionary myDataTypeDict[ n ] = datetime.date elif lst["python_type"] == datetime.datetime or issubclass(lst['delegate'], delegates.DateTimeDelegate): myDataTypeDict[ n ] = datetime.datetime myFormatDict [ n ] = lst["format"] #Populating date Format dictionary elif lst["python_type"] == str: if 'length' in lst: myLengthDict [ n ] = lst["length"] #Populating Column Length dictionary ## Writing Data row = 3 valueAddedInSize = 0 formatStr = '0' for data in data_list: # iterating the data_list, having dictionary cellStyle.num_format_str = '0' for column, val in enumerate( data ): #for i in dictCounter: valueAddedInSize = 0 if val != None: # make sure translations are tried on types that might have one if isinstance(val, (unicode, str)): newval = ugettext(val.capitalize()) if newval == val.capitalize(): newval = ugettext(val) val = newval # this is to handle fields of type code if isinstance(val, list): val = '.'.join(val) if not isinstance(val,(str,unicode,int,float, datetime.datetime,datetime.time,datetime.date, ExcelFormula.Formula, Decimal) ): val = unicode(val) if isinstance(val, Decimal): val = float(str(val)) if myDataTypeDict.has_key(column) == True: if myLengthDict.get(column) != None: if len(val) > myLengthDict[ column ]: val = val[0:myLengthDict[ column ]] elif myDataTypeDict[ column ] == str: formatStr = '0' elif myDataTypeDict[ column ] == int: formatStr = '0' elif myDataTypeDict[ column ] == float: formatStr = '0.' precision = myPrecisionDict[ column ] if not isinstance( precision, int ): # this might happen when precision is a callable precision = 2 for _j in range( 0 , precision ): formatStr += '0' valueAddedInSize = len(formatStr) # To fit the cell width + 1 (of dot(.)) elif myDataTypeDict[ column ] == datetime.date or isinstance(header_delegates[column], delegates.DateDelegate): formatStr = myFormatDict[column] val = datetime.datetime( day = val.day, year = val.year, month = val.month) elif myDataTypeDict[ column ] == datetime.datetime: formatStr = myFormatDict[column] elif myDataTypeDict[ column ] == bool: formatStr = '0' else: formatStr = '0' cellStyle.num_format_str = formatStr bottomCellStyle.num_format_str = formatStr rightCellStyle.num_format_str = formatStr bottomrightCellStyle.num_format_str = formatStr leftCellStyle.num_format_str = formatStr bottomleftCellStyle.num_format_str = formatStr elif val == None: val = ' ' if row - 2 == len(data_list): #we re at the bottom row if column == 0: ws.write(row , column, val , bottomleftCellStyle) elif column == number_of_columns - 1: ws.write(row , column, val , bottomrightCellStyle) else: ws.write(row , column, val , bottomCellStyle) else: if column == 0: ws.write(row , column, val , leftCellStyle) elif column == number_of_columns - 1: ws.write(row , column, val , rightCellStyle) else: ws.write(row , column, val , cellStyle) if ws.col(column).width < (len(unicode( val )) )* 300: ws.col(column).width = (len(unicode( val )) + valueAddedInSize )* 300 column = column + 1 row = row + 1 w.save(filename)

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