Pillow/Tests/test_imagedraw2.py
2024-06-24 15:08:36 +10:00

231 lines
5.4 KiB
Python

from __future__ import annotations
import os.path
import pytest
from PIL import Image, ImageDraw, ImageDraw2, features
from PIL._typing import Coords
from .helper import (
assert_image_equal,
assert_image_equal_tofile,
assert_image_similar_tofile,
hopper,
skip_unless_feature,
)
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)
# Bounding boxes
BBOX = (((X0, Y0), (X1, Y1)), [(X0, Y0), (X1, Y1)], (X0, Y0, X1, Y1), [X0, Y0, X1, Y1])
# Coordinate sequences
POINTS = (
((10, 10), (20, 40), (30, 30)),
[(10, 10), (20, 40), (30, 30)],
(10, 10, 20, 40, 30, 30),
[10, 10, 20, 40, 30, 30],
)
FONT_PATH = "Tests/fonts/FreeMono.ttf"
def test_sanity() -> None:
im = hopper("RGB").copy()
draw = ImageDraw2.Draw(im)
pen = ImageDraw2.Pen("blue", width=7)
draw.line(list(range(10)), pen)
draw2, handler = ImageDraw.getdraw(im)
assert draw2 is not None
pen = ImageDraw2.Pen("blue", width=7)
draw2.line(list(range(10)), pen)
def test_mode() -> None:
draw = ImageDraw2.Draw("L", (1, 1))
assert draw.image.mode == "L"
with pytest.raises(ValueError):
ImageDraw2.Draw("L")
@pytest.mark.parametrize("bbox", BBOX)
def test_ellipse(bbox: Coords) -> None:
# Arrange
im = Image.new("RGB", (W, H))
draw = ImageDraw2.Draw(im)
pen = ImageDraw2.Pen("blue", width=2)
brush = ImageDraw2.Brush("green")
# Act
draw.ellipse(bbox, pen, brush)
# Assert
assert_image_similar_tofile(im, "Tests/images/imagedraw_ellipse_RGB.png", 1)
def test_ellipse_edge() -> None:
# Arrange
im = Image.new("RGB", (W, H))
draw = ImageDraw2.Draw(im)
brush = ImageDraw2.Brush("white")
# Act
draw.ellipse(((0, 0), (W - 1, H - 1)), brush)
# Assert
assert_image_similar_tofile(im, "Tests/images/imagedraw_ellipse_edge.png", 1)
@pytest.mark.parametrize("points", POINTS)
def test_line(points: Coords) -> None:
# 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_tofile(im, "Tests/images/imagedraw_line.png")
@pytest.mark.parametrize("points", POINTS)
def test_line_pen_as_brush(points: Coords) -> None:
# 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(points, pen, brush)
# Assert
assert_image_equal_tofile(im, "Tests/images/imagedraw_line.png")
@pytest.mark.parametrize("points", POINTS)
def test_polygon(points: Coords) -> None:
# 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_tofile(im, "Tests/images/imagedraw_polygon.png")
@pytest.mark.parametrize("bbox", BBOX)
def test_rectangle(bbox: Coords) -> None:
# 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_tofile(im, "Tests/images/imagedraw_rectangle.png")
def test_big_rectangle() -> None:
# 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_tofile(im, expected, 1)
@skip_unless_feature("freetype2")
def test_text() -> None:
# 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_tofile(im, expected, 13)
@skip_unless_feature("freetype2")
def test_textbbox() -> None:
# Arrange
im = Image.new("RGB", (W, H))
draw = ImageDraw2.Draw(im)
font = ImageDraw2.Font("white", FONT_PATH)
# Act
bbox = draw.textbbox((0, 0), "ImageDraw2", font)
# Assert
right = 72 if features.check_feature("raqm") else 70
assert bbox == (0, 2, right, 12)
@skip_unless_feature("freetype2")
def test_textsize_empty_string() -> None:
# 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.textbbox((0, 0), "", font)
draw.textbbox((0, 0), "\n", font)
draw.textbbox((0, 0), "test\n", font)
draw.textlength("", font)
@skip_unless_feature("freetype2")
def test_flush() -> None:
# 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)