Pillow/Tests/test_imagedraw2.py

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import os.path
import unittest
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from PIL import Image, ImageDraw2, features
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from .helper import PillowTestCase, assert_image_equal, assert_image_similar, hopper
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BLACK = (0, 0, 0)
WHITE = (255, 255, 255)
GRAY = (190, 190, 190)
DEFAULT_MODE = "RGB"
IMAGES_PATH = os.path.join("Tests", "images", "imagedraw")
# Image size
W, H = 100, 100
# Bounding box points
X0 = int(W / 4)
X1 = int(X0 * 3)
Y0 = int(H / 4)
Y1 = int(X0 * 3)
# Two kinds of bounding box
BBOX1 = [(X0, Y0), (X1, Y1)]
BBOX2 = [X0, Y0, X1, Y1]
# Two kinds of coordinate sequences
POINTS1 = [(10, 10), (20, 40), (30, 30)]
POINTS2 = [10, 10, 20, 40, 30, 30]
KITE_POINTS = [(10, 50), (70, 10), (90, 50), (70, 90), (10, 50)]
HAS_FREETYPE = features.check("freetype2")
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FONT_PATH = "Tests/fonts/FreeMono.ttf"
class TestImageDraw(PillowTestCase):
def test_sanity(self):
im = hopper("RGB").copy()
draw = ImageDraw2.Draw(im)
pen = ImageDraw2.Pen("blue", width=7)
draw.line(list(range(10)), pen)
from PIL import ImageDraw
draw, handler = ImageDraw.getdraw(im)
pen = ImageDraw2.Pen("blue", width=7)
draw.line(list(range(10)), pen)
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def helper_ellipse(self, mode, bbox):
# Arrange
im = Image.new("RGB", (W, H))
draw = ImageDraw2.Draw(im)
pen = ImageDraw2.Pen("blue", width=2)
brush = ImageDraw2.Brush("green")
expected = "Tests/images/imagedraw_ellipse_{}.png".format(mode)
# Act
draw.ellipse(bbox, pen, brush)
# Assert
assert_image_similar(im, Image.open(expected), 1)
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def test_ellipse1(self):
self.helper_ellipse("RGB", BBOX1)
def test_ellipse2(self):
self.helper_ellipse("RGB", BBOX2)
def test_ellipse_edge(self):
# Arrange
im = Image.new("RGB", (W, H))
draw = ImageDraw2.Draw(im)
brush = ImageDraw2.Brush("white")
# Act
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draw.ellipse(((0, 0), (W - 1, H)), brush)
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# Assert
assert_image_similar(
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im, Image.open("Tests/images/imagedraw_ellipse_edge.png"), 1
)
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def helper_line(self, points):
# Arrange
im = Image.new("RGB", (W, H))
draw = ImageDraw2.Draw(im)
pen = ImageDraw2.Pen("yellow", width=2)
# Act
draw.line(points, pen)
# Assert
assert_image_equal(im, Image.open("Tests/images/imagedraw_line.png"))
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def test_line1_pen(self):
self.helper_line(POINTS1)
def test_line2_pen(self):
self.helper_line(POINTS2)
def test_line_pen_as_brush(self):
# Arrange
im = Image.new("RGB", (W, H))
draw = ImageDraw2.Draw(im)
pen = None
brush = ImageDraw2.Pen("yellow", width=2)
# Act
# Pass in the pen as the brush parameter
draw.line(POINTS1, pen, brush)
# Assert
assert_image_equal(im, Image.open("Tests/images/imagedraw_line.png"))
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def helper_polygon(self, points):
# Arrange
im = Image.new("RGB", (W, H))
draw = ImageDraw2.Draw(im)
pen = ImageDraw2.Pen("blue", width=2)
brush = ImageDraw2.Brush("red")
# Act
draw.polygon(points, pen, brush)
# Assert
assert_image_equal(im, Image.open("Tests/images/imagedraw_polygon.png"))
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def test_polygon1(self):
self.helper_polygon(POINTS1)
def test_polygon2(self):
self.helper_polygon(POINTS2)
def helper_rectangle(self, bbox):
# Arrange
im = Image.new("RGB", (W, H))
draw = ImageDraw2.Draw(im)
pen = ImageDraw2.Pen("green", width=2)
brush = ImageDraw2.Brush("black")
# Act
draw.rectangle(bbox, pen, brush)
# Assert
assert_image_equal(im, Image.open("Tests/images/imagedraw_rectangle.png"))
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def test_rectangle1(self):
self.helper_rectangle(BBOX1)
def test_rectangle2(self):
self.helper_rectangle(BBOX2)
def test_big_rectangle(self):
# Test drawing a rectangle bigger than the image
# Arrange
im = Image.new("RGB", (W, H))
bbox = [(-1, -1), (W + 1, H + 1)]
brush = ImageDraw2.Brush("orange")
draw = ImageDraw2.Draw(im)
expected = "Tests/images/imagedraw_big_rectangle.png"
# Act
draw.rectangle(bbox, brush)
# Assert
assert_image_similar(im, Image.open(expected), 1)
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@unittest.skipUnless(HAS_FREETYPE, "ImageFont not available")
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def test_text(self):
# Arrange
im = Image.new("RGB", (W, H))
draw = ImageDraw2.Draw(im)
font = ImageDraw2.Font("white", FONT_PATH)
expected = "Tests/images/imagedraw2_text.png"
# Act
draw.text((5, 5), "ImageDraw2", font)
# Assert
assert_image_similar(im, Image.open(expected), 13)
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@unittest.skipUnless(HAS_FREETYPE, "ImageFont not available")
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def test_textsize(self):
# Arrange
im = Image.new("RGB", (W, H))
draw = ImageDraw2.Draw(im)
font = ImageDraw2.Font("white", FONT_PATH)
# Act
size = draw.textsize("ImageDraw2", font)
# Assert
self.assertEqual(size[1], 12)
@unittest.skipUnless(HAS_FREETYPE, "ImageFont not available")
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def test_textsize_empty_string(self):
# Arrange
im = Image.new("RGB", (W, H))
draw = ImageDraw2.Draw(im)
font = ImageDraw2.Font("white", FONT_PATH)
# Act
# Should not cause 'SystemError: <built-in method getsize of
# ImagingFont object at 0x...> returned NULL without setting an error'
draw.textsize("", font)
draw.textsize("\n", font)
draw.textsize("test\n", font)
@unittest.skipUnless(HAS_FREETYPE, "ImageFont not available")
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def test_flush(self):
# Arrange
im = Image.new("RGB", (W, H))
draw = ImageDraw2.Draw(im)
font = ImageDraw2.Font("white", FONT_PATH)
# Act
draw.text((5, 5), "ImageDraw2", font)
im2 = draw.flush()
# Assert
assert_image_equal(im, im2)