Source code for camelot.view.controls.delegates.datedelegate

#  ============================================================================
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#  Copyright (C) 2007-2013 Conceptive Engineering bvba. All rights reserved.
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#  This file is part of the Camelot Library.
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#  and appearing in the file license.txt included in the packaging of
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#  ============================================================================
from PyQt4 import QtCore
from PyQt4.QtCore import Qt

from customdelegate import CustomDelegate, DocumentationMetaclass
from camelot.view.controls import editors
from camelot.core.constants import camelot_small_icon_width
from camelot.core.utils import variant_to_pyobject
from camelot.view.proxy import ValueLoading
from camelot.view.utils import local_date_format

class DateDelegate(CustomDelegate):
    """Custom delegate for date values"""
  
    __metaclass__ = DocumentationMetaclass
    
    editor = editors.DateEditor
    
    def __init__(self, parent=None, **kwargs):
        CustomDelegate.__init__(self, parent, **kwargs)
        self.date_format = local_date_format()
        self._width = self._font_metrics.averageCharWidth() * (len(self.date_format) + 2)  + (camelot_small_icon_width*2)
    
    def paint(self, painter, option, index):
        painter.save()
        self.drawBackground(painter, option, index)
        value = variant_to_pyobject( index.model().data( index, Qt.EditRole ) )
        
        value_str = u''
        if value not in (None, ValueLoading):
            value_str = QtCore.QDate(value).toString(self.date_format)
            
        self.paint_text(painter, option, index, value_str, horizontal_align=Qt.AlignRight )
        painter.restore()