from helper import unittest, PillowTestCase, hopper from PIL import Image from PIL import ImageColor from PIL import ImageDraw import os.path import sys 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)] class TestImageDraw(PillowTestCase): def test_sanity(self): im = hopper("RGB").copy() draw = ImageDraw.ImageDraw(im) draw = ImageDraw.Draw(im) draw.ellipse(list(range(4))) draw.line(list(range(10))) draw.polygon(list(range(100))) draw.rectangle(list(range(4))) def test_valueerror(self): im = Image.open("Tests/images/chi.gif") draw = ImageDraw.Draw(im) draw.line(((0, 0)), fill=(0, 0, 0)) def test_mode_mismatch(self): im = hopper("RGB").copy() self.assertRaises(ValueError, ImageDraw.ImageDraw, im, mode="L") def helper_arc(self, bbox, start, end): # Arrange im = Image.new("RGB", (W, H)) draw = ImageDraw.Draw(im) # Act draw.arc(bbox, start, end) # Assert self.assert_image_similar( im, Image.open("Tests/images/imagedraw_arc.png"), 1) def test_arc1(self): self.helper_arc(BBOX1, 0, 180) self.helper_arc(BBOX1, 0.5, 180.4) def test_arc2(self): self.helper_arc(BBOX2, 0, 180) self.helper_arc(BBOX2, 0.5, 180.4) def test_arc_end_le_start(self): # Arrange im = Image.new("RGB", (W, H)) draw = ImageDraw.Draw(im) start = 270.5 end = 0 # Act draw.arc(BBOX1, start=start, end=end) # Assert self.assert_image_equal( im, Image.open("Tests/images/imagedraw_arc_end_le_start.png")) def test_arc_no_loops(self): # No need to go in loops # Arrange im = Image.new("RGB", (W, H)) draw = ImageDraw.Draw(im) start = 5 end = 370 # Act draw.arc(BBOX1, start=start, end=end) # Assert self.assert_image_similar( im, Image.open("Tests/images/imagedraw_arc_no_loops.png"), 1) def test_bitmap(self): # Arrange small = Image.open("Tests/images/pil123rgba.png").resize((50, 50)) im = Image.new("RGB", (W, H)) draw = ImageDraw.Draw(im) # Act draw.bitmap((10, 10), small) # Assert self.assert_image_equal( im, Image.open("Tests/images/imagedraw_bitmap.png")) def helper_chord(self, mode, bbox, start, end): # Arrange im = Image.new(mode, (W, H)) draw = ImageDraw.Draw(im) expected = "Tests/images/imagedraw_chord_{}.png".format(mode) # Act draw.chord(bbox, start, end, fill="red", outline="yellow") # Assert self.assert_image_similar(im, Image.open(expected), 1) def test_chord1(self): for mode in ["RGB", "L"]: self.helper_chord(mode, BBOX1, 0, 180) self.helper_chord(mode, BBOX1, 0.5, 180.4) def test_chord2(self): for mode in ["RGB", "L"]: self.helper_chord(mode, BBOX2, 0, 180) self.helper_chord(mode, BBOX2, 0.5, 180.4) def helper_ellipse(self, mode, bbox): # Arrange im = Image.new(mode, (W, H)) draw = ImageDraw.Draw(im) expected = "Tests/images/imagedraw_ellipse_{}.png".format(mode) # Act draw.ellipse(bbox, fill="green", outline="blue") # Assert self.assert_image_similar(im, Image.open(expected), 1) def test_ellipse1(self): for mode in ["RGB", "L"]: self.helper_ellipse(mode, BBOX1) def test_ellipse2(self): for mode in ["RGB", "L"]: self.helper_ellipse(mode, BBOX2) def test_ellipse_edge(self): # Arrange im = Image.new("RGB", (W, H)) draw = ImageDraw.Draw(im) # Act draw.ellipse(((0, 0), (W-1, H)), fill="white") # Assert self.assert_image_similar( im, Image.open("Tests/images/imagedraw_ellipse_edge.png"), 1) def helper_line(self, points): # Arrange im = Image.new("RGB", (W, H)) draw = ImageDraw.Draw(im) # Act draw.line(points, fill="yellow", width=2) # Assert self.assert_image_equal( im, Image.open("Tests/images/imagedraw_line.png")) def test_line1(self): self.helper_line(POINTS1) def test_line2(self): self.helper_line(POINTS2) def test_shape1(self): # Arrange im = Image.new("RGB", (100, 100), "white") draw = ImageDraw.Draw(im) x0, y0 = 5, 5 x1, y1 = 5, 50 x2, y2 = 95, 50 x3, y3 = 95, 5 # Act s = ImageDraw.Outline() s.move(x0, y0) s.curve(x1, y1, x2, y2, x3, y3) s.line(x0, y0) draw.shape(s, fill=1) # Assert self.assert_image_equal( im, Image.open("Tests/images/imagedraw_shape1.png")) def test_shape2(self): # Arrange im = Image.new("RGB", (100, 100), "white") draw = ImageDraw.Draw(im) x0, y0 = 95, 95 x1, y1 = 95, 50 x2, y2 = 5, 50 x3, y3 = 5, 95 # Act s = ImageDraw.Outline() s.move(x0, y0) s.curve(x1, y1, x2, y2, x3, y3) s.line(x0, y0) draw.shape(s, outline="blue") # Assert self.assert_image_equal( im, Image.open("Tests/images/imagedraw_shape2.png")) def helper_pieslice(self, bbox, start, end): # Arrange im = Image.new("RGB", (W, H)) draw = ImageDraw.Draw(im) # Act draw.pieslice(bbox, start, end, fill="white", outline="blue") # Assert self.assert_image_similar( im, Image.open("Tests/images/imagedraw_pieslice.png"), 1) def test_pieslice1(self): self.helper_pieslice(BBOX1, -90, 45) self.helper_pieslice(BBOX1, -90.5, 45.4) def test_pieslice2(self): self.helper_pieslice(BBOX2, -90, 45) self.helper_pieslice(BBOX2, -90.5, 45.4) def helper_point(self, points): # Arrange im = Image.new("RGB", (W, H)) draw = ImageDraw.Draw(im) # Act draw.point(points, fill="yellow") # Assert self.assert_image_equal( im, Image.open("Tests/images/imagedraw_point.png")) def test_point1(self): self.helper_point(POINTS1) def test_point2(self): self.helper_point(POINTS2) def helper_polygon(self, points): # Arrange im = Image.new("RGB", (W, H)) draw = ImageDraw.Draw(im) # Act draw.polygon(points, fill="red", outline="blue") # Assert self.assert_image_equal( im, Image.open("Tests/images/imagedraw_polygon.png")) def test_polygon1(self): self.helper_polygon(POINTS1) def test_polygon2(self): self.helper_polygon(POINTS2) def test_polygon_kite(self): # Test drawing lines of different gradients (dx>dy, dy>dx) and # vertical (dx==0) and horizontal (dy==0) lines for mode in ["RGB", "L"]: # Arrange im = Image.new(mode, (W, H)) draw = ImageDraw.Draw(im) expected = "Tests/images/imagedraw_polygon_kite_{}.png".format( mode) # Act draw.polygon(KITE_POINTS, fill="blue", outline="yellow") # Assert self.assert_image_equal(im, Image.open(expected)) def helper_rectangle(self, bbox): # Arrange im = Image.new("RGB", (W, H)) draw = ImageDraw.Draw(im) # Act draw.rectangle(bbox, fill="black", outline="green") # Assert self.assert_image_equal( im, Image.open("Tests/images/imagedraw_rectangle.png")) 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)] draw = ImageDraw.Draw(im) expected = "Tests/images/imagedraw_big_rectangle.png" # Act draw.rectangle(bbox, fill="orange") # Assert self.assert_image_similar(im, Image.open(expected), 1) def test_floodfill(self): # Arrange im = Image.new("RGB", (W, H)) draw = ImageDraw.Draw(im) draw.rectangle(BBOX2, outline="yellow", fill="green") centre_point = (int(W/2), int(H/2)) red = ImageColor.getrgb("red") im_floodfill = Image.open("Tests/images/imagedraw_floodfill.png") # Act ImageDraw.floodfill(im, centre_point, red) # Assert self.assert_image_equal(im, im_floodfill) # Test that using the same colour does not change the image ImageDraw.floodfill(im, centre_point, red) self.assert_image_equal(im, im_floodfill) # Test that filling outside the image does not change the image ImageDraw.floodfill(im, (W, H), red) self.assert_image_equal(im, im_floodfill) @unittest.skipIf(hasattr(sys, 'pypy_version_info'), "Causes fatal RPython error on PyPy") def test_floodfill_border(self): # floodfill() is experimental # Arrange im = Image.new("RGB", (W, H)) draw = ImageDraw.Draw(im) draw.rectangle(BBOX2, outline="yellow", fill="green") centre_point = (int(W/2), int(H/2)) # Act ImageDraw.floodfill( im, centre_point, ImageColor.getrgb("red"), border=ImageColor.getrgb("black")) # Assert self.assert_image_equal( im, Image.open("Tests/images/imagedraw_floodfill2.png")) def test_floodfill_thresh(self): # floodfill() is experimental # Arrange im = Image.new("RGB", (W, H)) draw = ImageDraw.Draw(im) draw.rectangle(BBOX2, outline="darkgreen", fill="green") centre_point = (int(W/2), int(H/2)) # Act ImageDraw.floodfill( im, centre_point, ImageColor.getrgb("red"), thresh=30) # Assert self.assert_image_equal( im, Image.open("Tests/images/imagedraw_floodfill2.png")) def create_base_image_draw(self, size, mode=DEFAULT_MODE, background1=WHITE, background2=GRAY): img = Image.new(mode, size, background1) for x in range(0, size[0]): for y in range(0, size[1]): if (x + y) % 2 == 0: img.putpixel((x, y), background2) return (img, ImageDraw.Draw(img)) def test_square(self): expected = Image.open(os.path.join(IMAGES_PATH, 'square.png')) expected.load() img, draw = self.create_base_image_draw((10, 10)) draw.polygon([(2, 2), (2, 7), (7, 7), (7, 2)], BLACK) self.assert_image_equal(img, expected, 'square as normal polygon failed') img, draw = self.create_base_image_draw((10, 10)) draw.polygon([(7, 7), (7, 2), (2, 2), (2, 7)], BLACK) self.assert_image_equal(img, expected, 'square as inverted polygon failed') img, draw = self.create_base_image_draw((10, 10)) draw.rectangle((2, 2, 7, 7), BLACK) self.assert_image_equal(img, expected, 'square as normal rectangle failed') img, draw = self.create_base_image_draw((10, 10)) draw.rectangle((7, 7, 2, 2), BLACK) self.assert_image_equal( img, expected, 'square as inverted rectangle failed') def test_triangle_right(self): expected = Image.open(os.path.join(IMAGES_PATH, 'triangle_right.png')) expected.load() img, draw = self.create_base_image_draw((20, 20)) draw.polygon([(3, 5), (17, 5), (10, 12)], BLACK) self.assert_image_equal(img, expected, 'triangle right failed') def test_line_horizontal(self): expected = Image.open(os.path.join(IMAGES_PATH, 'line_horizontal_w2px_normal.png')) expected.load() img, draw = self.create_base_image_draw((20, 20)) draw.line((5, 5, 14, 5), BLACK, 2) self.assert_image_equal( img, expected, 'line straight horizontal normal 2px wide failed') expected = Image.open(os.path.join(IMAGES_PATH, 'line_horizontal_w2px_inverted.png')) expected.load() img, draw = self.create_base_image_draw((20, 20)) draw.line((14, 5, 5, 5), BLACK, 2) self.assert_image_equal( img, expected, 'line straight horizontal inverted 2px wide failed') expected = Image.open(os.path.join(IMAGES_PATH, 'line_horizontal_w3px.png')) expected.load() img, draw = self.create_base_image_draw((20, 20)) draw.line((5, 5, 14, 5), BLACK, 3) self.assert_image_equal( img, expected, 'line straight horizontal normal 3px wide failed') img, draw = self.create_base_image_draw((20, 20)) draw.line((14, 5, 5, 5), BLACK, 3) self.assert_image_equal( img, expected, 'line straight horizontal inverted 3px wide failed') expected = Image.open(os.path.join(IMAGES_PATH, 'line_horizontal_w101px.png')) expected.load() img, draw = self.create_base_image_draw((200, 110)) draw.line((5, 55, 195, 55), BLACK, 101) self.assert_image_equal( img, expected, 'line straight horizontal 101px wide failed') def test_line_h_s1_w2(self): self.skipTest('failing') expected = Image.open(os.path.join(IMAGES_PATH, 'line_horizontal_slope1px_w2px.png')) expected.load() img, draw = self.create_base_image_draw((20, 20)) draw.line((5, 5, 14, 6), BLACK, 2) self.assert_image_equal( img, expected, 'line horizontal 1px slope 2px wide failed') def test_line_vertical(self): expected = Image.open(os.path.join(IMAGES_PATH, 'line_vertical_w2px_normal.png')) expected.load() img, draw = self.create_base_image_draw((20, 20)) draw.line((5, 5, 5, 14), BLACK, 2) self.assert_image_equal( img, expected, 'line straight vertical normal 2px wide failed') expected = Image.open(os.path.join(IMAGES_PATH, 'line_vertical_w2px_inverted.png')) expected.load() img, draw = self.create_base_image_draw((20, 20)) draw.line((5, 14, 5, 5), BLACK, 2) self.assert_image_equal( img, expected, 'line straight vertical inverted 2px wide failed') expected = Image.open(os.path.join(IMAGES_PATH, 'line_vertical_w3px.png')) expected.load() img, draw = self.create_base_image_draw((20, 20)) draw.line((5, 5, 5, 14), BLACK, 3) self.assert_image_equal( img, expected, 'line straight vertical normal 3px wide failed') img, draw = self.create_base_image_draw((20, 20)) draw.line((5, 14, 5, 5), BLACK, 3) self.assert_image_equal( img, expected, 'line straight vertical inverted 3px wide failed') expected = Image.open(os.path.join(IMAGES_PATH, 'line_vertical_w101px.png')) expected.load() img, draw = self.create_base_image_draw((110, 200)) draw.line((55, 5, 55, 195), BLACK, 101) self.assert_image_equal(img, expected, 'line straight vertical 101px wide failed') expected = Image.open(os.path.join(IMAGES_PATH, 'line_vertical_slope1px_w2px.png')) expected.load() img, draw = self.create_base_image_draw((20, 20)) draw.line((5, 5, 6, 14), BLACK, 2) self.assert_image_equal(img, expected, 'line vertical 1px slope 2px wide failed') def test_line_oblique_45(self): expected = Image.open(os.path.join(IMAGES_PATH, 'line_oblique_45_w3px_a.png')) expected.load() img, draw = self.create_base_image_draw((20, 20)) draw.line((5, 5, 14, 14), BLACK, 3) self.assert_image_equal(img, expected, 'line oblique 45 normal 3px wide A failed') img, draw = self.create_base_image_draw((20, 20)) draw.line((14, 14, 5, 5), BLACK, 3) self.assert_image_equal(img, expected, 'line oblique 45 inverted 3px wide A failed') expected = Image.open(os.path.join(IMAGES_PATH, 'line_oblique_45_w3px_b.png')) expected.load() img, draw = self.create_base_image_draw((20, 20)) draw.line((14, 5, 5, 14), BLACK, 3) self.assert_image_equal(img, expected, 'line oblique 45 normal 3px wide B failed') img, draw = self.create_base_image_draw((20, 20)) draw.line((5, 14, 14, 5), BLACK, 3) self.assert_image_equal(img, expected, 'line oblique 45 inverted 3px wide B failed') def test_wide_line_dot(self): # Test drawing a wide "line" from one point to another just draws # a single point # Arrange im = Image.new("RGB", (W, H)) draw = ImageDraw.Draw(im) expected = "Tests/images/imagedraw_wide_line_dot.png" # Act draw.line([(50, 50), (50, 50)], width=3) # Assert self.assert_image_similar(im, Image.open(expected), 1) if __name__ == '__main__': unittest.main()