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import sys
import os
import platform
from env_indigo import isIronPython, isJython
if sys.version_info > (3, 0):
from bistring3 import BitString
else:
from bistring1 import BitString
HASH_SIZE = 32
if isIronPython():
import clr
clr.AddReference("System")
clr.AddReference("System.Runtime.Extensions")
clr.AddReference("System.Runtime.InteropServices.RuntimeInformation")
import System
import System.Environment
import System.Runtime.InteropServices.RuntimeInformation
dotnet_framework = System.Runtime.InteropServices.RuntimeInformation.FrameworkDescription
if dotnet_framework.startswith('.NET Core'):
clr.AddReferenceToFileAndPath(os.path.join(os.path.dirname(os.path.abspath(__file__)), 'dotnet', 'System.Drawing.Common.dll'))
os_version = System.Environment.OSVersion.ToString()
if os_version.startswith('Unix'):
clr.AddReferenceToFileAndPath(os.path.join(os.path.dirname(os.path.abspath(__file__)), 'dotnet', 'System.Drawing.Common.unix.dll'))
elif os_version.startswith('Microsoft Windows'):
clr.AddReferenceToFileAndPath(os.path.join(os.path.dirname(os.path.abspath(__file__)), 'dotnet', 'System.Drawing.Common.win.dll'))
else:
raise SystemError("Unsupported OS: " + os_version)
clr.AddReference("System.Drawing")
from System.Drawing import Bitmap, Graphics, Rectangle, Drawing2D
elif isJython():
from java.lang import System
from java.awt.image import BufferedImage
from javax.imageio import ImageIO
from java.io import File
from java.awt import RenderingHints, Image
else:
try:
import Image
except ImportError:
from PIL import Image
class RenderingTestException(Exception):
pass
class ImageHash(object):
def __init__(self, path, size=HASH_SIZE):
self.image_path = path
self.hash_size = size
def getBitString(self, pixels):
avg = sum(pixels) / len(pixels)
diff = []
for pixel in pixels:
value = 1 if pixel > avg else 0
diff.append(str(value))
bits = BitString(bin="".join(diff))
return bits
def average_hash_and_sizes(self):
height = 0
width = 0
if isJython():
image = ImageIO.read(File(self.image_path))
height = image.getHeight()
width = image.getWidth()
newImage = BufferedImage(self.hash_size, self.hash_size, BufferedImage.TYPE_INT_ARGB)
g = newImage.createGraphics()
g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC)
g.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY)
g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON)
g.drawImage(image, 0, 0, self.hash_size, self.hash_size, None)
g.dispose()
allchannelpixels = [[], [], [], []]
for i in range(self.hash_size):
for j in range(self.hash_size):
pixel = int(newImage.getRGB(i, j))
allchannelpixels[0].append((pixel >> 16) & 0xFF)
allchannelpixels[1].append((pixel >> 8) & 0xFF)
allchannelpixels[2].append((pixel) & 0xFF)
allchannelpixels[3].append((pixel >> 24) & 0xFF)
elif isIronPython():
srcImage = Bitmap(self.image_path)
height = srcImage.Height
width = srcImage.Width
newImage = Bitmap(self.hash_size, self.hash_size)
gr = Graphics.FromImage(newImage)
gr.SmoothingMode = Drawing2D.SmoothingMode.AntiAlias
gr.InterpolationMode = Drawing2D.InterpolationMode.HighQualityBicubic
gr.PixelOffsetMode = Drawing2D.PixelOffsetMode.HighQuality
gr.DrawImage(srcImage, Rectangle(0, 0, self.hash_size, self.hash_size))
allchannelpixels = [[], [], [], []]
for i in range(self.hash_size):
for j in range(self.hash_size):
pixel = newImage.GetPixel(i, j)
allchannelpixels[0].append(int(pixel.R))
allchannelpixels[1].append(int(pixel.G))
allchannelpixels[2].append(int(pixel.B))
allchannelpixels[3].append(int(pixel.A))
else:
self.image = Image.open(self.image_path)
width, height = self.image.size
image = self.image.resize((self.hash_size, self.hash_size), Image.ANTIALIAS)
# image.show()
allchannelpixels = [list(channel.getdata()) for channel in image.split()]
bits = []
for pixels in allchannelpixels:
bits.append(self.getBitString(pixels))
return bits, width, height
def imageDiff(imp1, imp2):
imh1, im1_width, im1_height = ImageHash(imp1, HASH_SIZE).average_hash_and_sizes()
imh2, im2_width, im2_height = ImageHash(imp2, HASH_SIZE).average_hash_and_sizes()
if (abs((float(im1_width) / float(im2_width)) - 1.0) > 0.1) or (abs((float(im1_height) / float(im2_height)) - 1.0) > 0.1):
raise RenderingTestException("Images have different sizes: %sx%s (ref) and %sx%s (out)" % (im1_width, im1_height, im2_width, im2_height))
if len(imh1) != len(imh2):
raise RenderingTestException("Images have different channels count: %s (ref) and %s (out)" % (len(imh1), len(imh2)))
results = []
for i in range(len(imh1)):
results.append((imh1[i] ^ imh2[i]).bin.count("1"))
return results
# def checkSvgSimilarity(filename):
# def blankId(n):
# return 'id=""'
#
# def roundFloat(n):
# try:
# return str(int(round(float(n.group(0)))))
# except TypeError, e:
# return n.group(0)
#
# f = open('ref/%s' % filename)
# ref = f.read()
# f.close()
# f = open('out/%s' % filename)
# out = f.read()
# f.close()
#
# pattern = re.compile('([0-9]+\.[0-9]+)')
# ref = pattern.sub(roundFloat, ref)
# out = pattern.sub(roundFloat, out)
#
# pattern = re.compile('id=\"(.+)\"')
# ref = pattern.sub(blankId, ref)
# out = pattern.sub(blankId, out)
#
# value = difflib.SequenceMatcher(None, ref, out).ratio()
# if value >= 0.75:
# print '%s rendering status: OK' % filename
# else:
# print '%s rendering status: Problem: SVG similarity is %s' % (filename, round(value, 2))
def checkBitmapSimilarity(filename, ref_filename):
if ref_filename is None:
ref_filename = filename
try:
if os.name == 'nt':
system = 'win'
elif os.name == 'posix':
if not platform.mac_ver()[0]:
system = 'linux'
else:
system = 'mac'
elif os.name == 'java':
osName = System.getProperty("os.name")
if osName.find("Windows") != -1:
system = 'win'
elif osName.find('Linux') != -1:
system = 'linux'
elif osName.find('Mac OS') != -1:
system = 'mac'
else:
raise RenderingTestException("No reference images for this operating system: {0}".format(osName))
else:
raise RenderingTestException("No reference images for this operating system: {0}".format(os.name))
dirname = os.path.normpath(os.path.abspath(os.path.join(os.path.dirname(__file__), '..', '..', 'tests', 'rendering')))
results = imageDiff('%s/ref/%s/%s' % (dirname, system, ref_filename), '%s/out/%s' % (dirname, filename))
except RenderingTestException as e:
return '%s rendering status: Problem: %s' % (filename, str(e))
channels = ['red', 'green', 'blue', 'alpha']
for i, result in enumerate(results):
if result > (HASH_SIZE ** 2) * 0.1:
return '%s rendering status: Problem: PNG similarity is %s for %s channel' % (filename, round(1 - (result / float(HASH_SIZE ** 2)), 2), channels[i])
return '%s rendering status: OK' % filename
def checkImageSimilarity(filename, ref_filename=None):
if filename.endswith('.svg'):
# checkSvgSimilarity(filename)
return ''
else:
return checkBitmapSimilarity(filename, ref_filename)
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