#!/usr/bin/env python3

# This python script displays the three images for a given test 
#
# ref  image: is the currently "corrrect" image archived with pdf2htmlEX 
# out  image: is the result of pdf2htmlEXing a given test pdf
# diff image: is the difference of the ref and out ('RGB') images
#
# In all cases, the diff image MUST be completely BLACK for a test to 
# pass. 
#
# Type Ctrl-Q inside the image to quit each image display.
#

import os
import sys

if len(sys.argv) != 2 :
	print("usage: compareTestImages <<aTestFileName>>")
	sys.exit(-1)

baseFileName = os.path.splitext(sys.argv[1])[0]
testPNGDir  = "/tmp/pdf2htmlEX/png"

outPNGFile  = os.path.join(testPNGDir, baseFileName+".out.png")
refPNGFile  = os.path.join(testPNGDir, baseFileName+".ref.png")
diffPNGFile = os.path.join(testPNGDir, baseFileName+".diff.png")

os.system("display "+outPNGFile+"&")
os.system("display "+refPNGFile+"&")
os.system("display "+diffPNGFile+"&")