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import unittest
import os

import IECore
import IECoreImage

class FontTest( unittest.TestCase ) :

	def testConstructors( self ) :

		f = IECoreImage.Font( os.path.join( "test", "IECore", "data", "fonts", "Vera.ttf" ) )

		self.assertRaises( Exception, IECoreImage.Font, "notAFont" )

	def testImages( self ) :

		f = IECoreImage.Font( os.path.join( "test", "IECore", "data", "fonts", "Vera.ttf" ) )
		f.setResolution( 300 )

		for c in range( 0, 128 ) :

			i = f.image( chr( c ) )
			self.assertTrue( i.displayWindow.intersects( i.dataWindow.min() ) )
			self.assertTrue( i.displayWindow.intersects( i.dataWindow.max() ) )
			self.assertTrue( len( i ), 1 )
			self.assertTrue( "Y" in i )
			self.assertTrue( i.channelValid( "Y" ) )

	def testWholeImage( self ) :

		f = IECoreImage.Font( os.path.join( "test", "IECore", "data", "fonts", "Vera.ttf" ) )
		f.setResolution( 50 )

		a = f.image( 'a' )
		i = f.image()

		self.assertEqual( (a.displayWindow.size().x + 1) * 16, i.displayWindow.size().x + 1 )
		self.assertEqual( (a.displayWindow.size().y + 1) * 8, i.displayWindow.size().y + 1 )

		self.assertTrue( len( i ), 1 )
		self.assertTrue( "Y" in i )
		self.assertTrue( i.channelValid( "Y" ) )

if __name__ == "__main__":
	unittest.main()
