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863 lines
28 KiB
Python
863 lines
28 KiB
Python
import copy
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import os
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import re
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import shutil
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import sys
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from io import BytesIO
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import pytest
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from packaging.version import parse as parse_version
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from PIL import Image, ImageDraw, ImageFont, features
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from .helper import (
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assert_image_equal,
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assert_image_equal_tofile,
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assert_image_similar,
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assert_image_similar_tofile,
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is_pypy,
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is_win32,
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skip_unless_feature,
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)
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FONT_PATH = "Tests/fonts/FreeMono.ttf"
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FONT_SIZE = 20
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TEST_TEXT = "hey you\nyou are awesome\nthis looks awkward"
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pytestmark = skip_unless_feature("freetype2")
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class TestImageFont:
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LAYOUT_ENGINE = ImageFont.LAYOUT_BASIC
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# Freetype has different metrics depending on the version.
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# (and, other things, but first things first)
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METRICS = {
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(">=2.3", "<2.4"): {
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"multiline": 30,
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"textsize": 12,
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"getters": (13, 16),
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"mask": (107, 13),
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"multiline-anchor": 6,
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},
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(">=2.7",): {
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"multiline": 6.2,
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"textsize": 2.5,
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"getters": (12, 16),
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"mask": (108, 13),
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"multiline-anchor": 4,
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},
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"Default": {
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"multiline": 0.5,
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"textsize": 0.5,
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"getters": (12, 16),
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"mask": (108, 13),
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"multiline-anchor": 4,
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},
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}
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@classmethod
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def setup_class(self):
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freetype = parse_version(features.version_module("freetype2"))
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self.metrics = self.METRICS["Default"]
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for conditions, metrics in self.METRICS.items():
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if not isinstance(conditions, tuple):
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continue
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for condition in conditions:
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version = parse_version(re.sub("[<=>]", "", condition))
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if (condition.startswith(">=") and freetype >= version) or (
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condition.startswith("<") and freetype < version
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):
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# Condition was met
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continue
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# Condition failed
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break
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else:
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# All conditions were met
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self.metrics = metrics
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def get_font(self):
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return ImageFont.truetype(
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FONT_PATH, FONT_SIZE, layout_engine=self.LAYOUT_ENGINE
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)
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def test_sanity(self):
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assert re.search(r"\d+\.\d+\.\d+$", features.version_module("freetype2"))
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def test_font_properties(self):
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ttf = self.get_font()
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assert ttf.path == FONT_PATH
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assert ttf.size == FONT_SIZE
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ttf_copy = ttf.font_variant()
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assert ttf_copy.path == FONT_PATH
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assert ttf_copy.size == FONT_SIZE
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ttf_copy = ttf.font_variant(size=FONT_SIZE + 1)
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assert ttf_copy.size == FONT_SIZE + 1
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second_font_path = "Tests/fonts/DejaVuSans.ttf"
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ttf_copy = ttf.font_variant(font=second_font_path)
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assert ttf_copy.path == second_font_path
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def test_font_with_name(self):
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self.get_font()
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self._render(FONT_PATH)
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def _font_as_bytes(self):
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with open(FONT_PATH, "rb") as f:
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font_bytes = BytesIO(f.read())
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return font_bytes
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def test_font_with_filelike(self):
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ImageFont.truetype(
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self._font_as_bytes(), FONT_SIZE, layout_engine=self.LAYOUT_ENGINE
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)
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self._render(self._font_as_bytes())
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# Usage note: making two fonts from the same buffer fails.
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# shared_bytes = self._font_as_bytes()
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# self._render(shared_bytes)
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# with pytest.raises(Exception):
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# _render(shared_bytes)
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def test_font_with_open_file(self):
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with open(FONT_PATH, "rb") as f:
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self._render(f)
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def test_non_ascii_path(self, tmp_path):
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tempfile = str(tmp_path / ("temp_" + chr(128) + ".ttf"))
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try:
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shutil.copy(FONT_PATH, tempfile)
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except UnicodeEncodeError:
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pytest.skip("Non-ASCII path could not be created")
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ImageFont.truetype(tempfile, FONT_SIZE)
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def test_unavailable_layout_engine(self):
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have_raqm = ImageFont.core.HAVE_RAQM
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ImageFont.core.HAVE_RAQM = False
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try:
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ttf = ImageFont.truetype(
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FONT_PATH, FONT_SIZE, layout_engine=ImageFont.LAYOUT_RAQM
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)
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finally:
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ImageFont.core.HAVE_RAQM = have_raqm
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assert ttf.layout_engine == ImageFont.LAYOUT_BASIC
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def _render(self, font):
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txt = "Hello World!"
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ttf = ImageFont.truetype(font, FONT_SIZE, layout_engine=self.LAYOUT_ENGINE)
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ttf.getsize(txt)
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img = Image.new("RGB", (256, 64), "white")
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d = ImageDraw.Draw(img)
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d.text((10, 10), txt, font=ttf, fill="black")
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return img
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def test_render_equal(self):
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img_path = self._render(FONT_PATH)
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with open(FONT_PATH, "rb") as f:
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font_filelike = BytesIO(f.read())
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img_filelike = self._render(font_filelike)
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assert_image_equal(img_path, img_filelike)
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def test_transparent_background(self):
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im = Image.new(mode="RGBA", size=(300, 100))
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draw = ImageDraw.Draw(im)
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ttf = self.get_font()
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txt = "Hello World!"
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draw.text((10, 10), txt, font=ttf)
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target = "Tests/images/transparent_background_text.png"
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with Image.open(target) as target_img:
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assert_image_similar(im, target_img, 4.09)
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def test_textsize_equal(self):
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im = Image.new(mode="RGB", size=(300, 100))
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draw = ImageDraw.Draw(im)
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ttf = self.get_font()
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txt = "Hello World!"
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size = draw.textsize(txt, ttf)
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draw.text((10, 10), txt, font=ttf)
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draw.rectangle((10, 10, 10 + size[0], 10 + size[1]))
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target = "Tests/images/rectangle_surrounding_text.png"
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with Image.open(target) as target_img:
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# Epsilon ~.5 fails with FreeType 2.7
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assert_image_similar(im, target_img, self.metrics["textsize"])
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def test_render_multiline(self):
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im = Image.new(mode="RGB", size=(300, 100))
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draw = ImageDraw.Draw(im)
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ttf = self.get_font()
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line_spacing = draw.textsize("A", font=ttf)[1] + 4
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lines = TEST_TEXT.split("\n")
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y = 0
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for line in lines:
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draw.text((0, y), line, font=ttf)
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y += line_spacing
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target = "Tests/images/multiline_text.png"
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with Image.open(target) as target_img:
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# some versions of freetype have different horizontal spacing.
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# setting a tight epsilon, I'm showing the original test failure
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# at epsilon = ~38.
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assert_image_similar(im, target_img, self.metrics["multiline"])
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def test_render_multiline_text(self):
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ttf = self.get_font()
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# Test that text() correctly connects to multiline_text()
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# and that align defaults to left
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im = Image.new(mode="RGB", size=(300, 100))
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draw = ImageDraw.Draw(im)
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draw.text((0, 0), TEST_TEXT, font=ttf)
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target = "Tests/images/multiline_text.png"
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with Image.open(target) as target_img:
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# Epsilon ~.5 fails with FreeType 2.7
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assert_image_similar(im, target_img, self.metrics["multiline"])
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# Test that text() can pass on additional arguments
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# to multiline_text()
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draw.text(
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(0, 0), TEST_TEXT, fill=None, font=ttf, anchor=None, spacing=4, align="left"
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)
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draw.text((0, 0), TEST_TEXT, None, ttf, None, 4, "left")
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# Test align center and right
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for align, ext in {"center": "_center", "right": "_right"}.items():
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im = Image.new(mode="RGB", size=(300, 100))
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draw = ImageDraw.Draw(im)
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draw.multiline_text((0, 0), TEST_TEXT, font=ttf, align=align)
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target = "Tests/images/multiline_text" + ext + ".png"
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with Image.open(target) as target_img:
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# Epsilon ~.5 fails with FreeType 2.7
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assert_image_similar(im, target_img, self.metrics["multiline"])
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def test_unknown_align(self):
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im = Image.new(mode="RGB", size=(300, 100))
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draw = ImageDraw.Draw(im)
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ttf = self.get_font()
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# Act/Assert
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with pytest.raises(ValueError):
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draw.multiline_text((0, 0), TEST_TEXT, font=ttf, align="unknown")
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def test_draw_align(self):
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im = Image.new("RGB", (300, 100), "white")
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draw = ImageDraw.Draw(im)
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ttf = self.get_font()
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line = "some text"
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draw.text((100, 40), line, (0, 0, 0), font=ttf, align="left")
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def test_multiline_size(self):
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ttf = self.get_font()
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im = Image.new(mode="RGB", size=(300, 100))
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draw = ImageDraw.Draw(im)
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# Test that textsize() correctly connects to multiline_textsize()
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assert draw.textsize(TEST_TEXT, font=ttf) == draw.multiline_textsize(
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TEST_TEXT, font=ttf
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)
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# Test that multiline_textsize corresponds to ImageFont.textsize()
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# for single line text
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assert ttf.getsize("A") == draw.multiline_textsize("A", font=ttf)
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# Test that textsize() can pass on additional arguments
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# to multiline_textsize()
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draw.textsize(TEST_TEXT, font=ttf, spacing=4)
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draw.textsize(TEST_TEXT, ttf, 4)
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def test_multiline_width(self):
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ttf = self.get_font()
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im = Image.new(mode="RGB", size=(300, 100))
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draw = ImageDraw.Draw(im)
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assert (
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draw.textsize("longest line", font=ttf)[0]
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== draw.multiline_textsize("longest line\nline", font=ttf)[0]
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)
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def test_multiline_spacing(self):
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ttf = self.get_font()
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im = Image.new(mode="RGB", size=(300, 100))
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draw = ImageDraw.Draw(im)
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draw.multiline_text((0, 0), TEST_TEXT, font=ttf, spacing=10)
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target = "Tests/images/multiline_text_spacing.png"
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with Image.open(target) as target_img:
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# Epsilon ~.5 fails with FreeType 2.7
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assert_image_similar(im, target_img, self.metrics["multiline"])
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def test_rotated_transposed_font(self):
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img_grey = Image.new("L", (100, 100))
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draw = ImageDraw.Draw(img_grey)
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word = "testing"
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font = self.get_font()
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orientation = Image.ROTATE_90
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transposed_font = ImageFont.TransposedFont(font, orientation=orientation)
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# Original font
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draw.font = font
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box_size_a = draw.textsize(word)
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# Rotated font
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draw.font = transposed_font
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box_size_b = draw.textsize(word)
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# Check (w,h) of box a is (h,w) of box b
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assert box_size_a[0] == box_size_b[1]
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assert box_size_a[1] == box_size_b[0]
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def test_unrotated_transposed_font(self):
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img_grey = Image.new("L", (100, 100))
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draw = ImageDraw.Draw(img_grey)
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word = "testing"
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font = self.get_font()
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orientation = None
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transposed_font = ImageFont.TransposedFont(font, orientation=orientation)
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# Original font
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draw.font = font
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box_size_a = draw.textsize(word)
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# Rotated font
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draw.font = transposed_font
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box_size_b = draw.textsize(word)
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# Check boxes a and b are same size
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assert box_size_a == box_size_b
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def test_rotated_transposed_font_get_mask(self):
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# Arrange
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text = "mask this"
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font = self.get_font()
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orientation = Image.ROTATE_90
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transposed_font = ImageFont.TransposedFont(font, orientation=orientation)
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# Act
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mask = transposed_font.getmask(text)
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# Assert
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assert mask.size == self.metrics["mask"][::-1]
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def test_unrotated_transposed_font_get_mask(self):
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# Arrange
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text = "mask this"
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font = self.get_font()
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orientation = None
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transposed_font = ImageFont.TransposedFont(font, orientation=orientation)
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# Act
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mask = transposed_font.getmask(text)
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# Assert
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assert mask.size == self.metrics["mask"]
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def test_free_type_font_get_name(self):
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# Arrange
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font = self.get_font()
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# Act
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name = font.getname()
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# Assert
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assert ("FreeMono", "Regular") == name
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def test_free_type_font_get_metrics(self):
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# Arrange
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font = self.get_font()
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# Act
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ascent, descent = font.getmetrics()
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# Assert
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assert isinstance(ascent, int)
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assert isinstance(descent, int)
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assert (ascent, descent) == (16, 4) # too exact check?
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def test_free_type_font_get_offset(self):
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# Arrange
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font = self.get_font()
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text = "offset this"
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# Act
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offset = font.getoffset(text)
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# Assert
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assert offset == (0, 3)
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def test_free_type_font_get_mask(self):
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# Arrange
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font = self.get_font()
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text = "mask this"
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# Act
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mask = font.getmask(text)
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# Assert
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assert mask.size == self.metrics["mask"]
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def test_load_path_not_found(self):
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# Arrange
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filename = "somefilenamethatdoesntexist.ttf"
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# Act/Assert
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with pytest.raises(OSError):
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ImageFont.load_path(filename)
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with pytest.raises(OSError):
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ImageFont.truetype(filename)
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def test_load_non_font_bytes(self):
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with open("Tests/images/hopper.jpg", "rb") as f:
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with pytest.raises(OSError):
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ImageFont.truetype(f)
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def test_default_font(self):
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# Arrange
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txt = 'This is a "better than nothing" default font.'
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im = Image.new(mode="RGB", size=(300, 100))
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draw = ImageDraw.Draw(im)
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target = "Tests/images/default_font.png"
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with Image.open(target) as target_img:
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# Act
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default_font = ImageFont.load_default()
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draw.text((10, 10), txt, font=default_font)
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# Assert
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assert_image_equal(im, target_img)
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def test_getsize_empty(self):
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# issue #2614
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font = self.get_font()
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# should not crash.
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assert (0, 0) == font.getsize("")
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def test_render_empty(self):
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# issue 2666
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font = self.get_font()
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im = Image.new(mode="RGB", size=(300, 100))
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target = im.copy()
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draw = ImageDraw.Draw(im)
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# should not crash here.
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draw.text((10, 10), "", font=font)
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assert_image_equal(im, target)
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def test_unicode_pilfont(self):
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# should not segfault, should return UnicodeDecodeError
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# issue #2826
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font = ImageFont.load_default()
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with pytest.raises(UnicodeEncodeError):
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font.getsize("’")
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@pytest.mark.xfail(is_pypy(), reason="failing on PyPy with Raqm")
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def test_unicode_extended(self):
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# issue #3777
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text = "A\u278A\U0001F12B"
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target = "Tests/images/unicode_extended.png"
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ttf = ImageFont.truetype(
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"Tests/fonts/NotoSansSymbols-Regular.ttf",
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FONT_SIZE,
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layout_engine=self.LAYOUT_ENGINE,
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)
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img = Image.new("RGB", (100, 60))
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d = ImageDraw.Draw(img)
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d.text((10, 10), text, font=ttf)
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# fails with 14.7
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assert_image_similar_tofile(img, target, 6.2)
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def _test_fake_loading_font(self, monkeypatch, path_to_fake, fontname):
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# Make a copy of FreeTypeFont so we can patch the original
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free_type_font = copy.deepcopy(ImageFont.FreeTypeFont)
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with monkeypatch.context() as m:
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m.setattr(ImageFont, "_FreeTypeFont", free_type_font, raising=False)
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def loadable_font(filepath, size, index, encoding, *args, **kwargs):
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if filepath == path_to_fake:
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return ImageFont._FreeTypeFont(
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FONT_PATH, size, index, encoding, *args, **kwargs
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)
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return ImageFont._FreeTypeFont(
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filepath, size, index, encoding, *args, **kwargs
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)
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m.setattr(ImageFont, "FreeTypeFont", loadable_font)
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font = ImageFont.truetype(fontname)
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# Make sure it's loaded
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name = font.getname()
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assert ("FreeMono", "Regular") == name
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|
||
@pytest.mark.skipif(is_win32(), reason="requires Unix or macOS")
|
||
def test_find_linux_font(self, monkeypatch):
|
||
# A lot of mocking here - this is more for hitting code and
|
||
# catching syntax like errors
|
||
font_directory = "/usr/local/share/fonts"
|
||
monkeypatch.setattr(sys, "platform", "linux")
|
||
monkeypatch.setenv("XDG_DATA_DIRS", "/usr/share/:/usr/local/share/")
|
||
|
||
def fake_walker(path):
|
||
if path == font_directory:
|
||
return [
|
||
(
|
||
path,
|
||
[],
|
||
["Arial.ttf", "Single.otf", "Duplicate.otf", "Duplicate.ttf"],
|
||
)
|
||
]
|
||
return [(path, [], ["some_random_font.ttf"])]
|
||
|
||
monkeypatch.setattr(os, "walk", fake_walker)
|
||
# Test that the font loads both with and without the
|
||
# extension
|
||
self._test_fake_loading_font(
|
||
monkeypatch, font_directory + "/Arial.ttf", "Arial.ttf"
|
||
)
|
||
self._test_fake_loading_font(
|
||
monkeypatch, font_directory + "/Arial.ttf", "Arial"
|
||
)
|
||
|
||
# Test that non-ttf fonts can be found without the
|
||
# extension
|
||
self._test_fake_loading_font(
|
||
monkeypatch, font_directory + "/Single.otf", "Single"
|
||
)
|
||
|
||
# Test that ttf fonts are preferred if the extension is
|
||
# not specified
|
||
self._test_fake_loading_font(
|
||
monkeypatch, font_directory + "/Duplicate.ttf", "Duplicate"
|
||
)
|
||
|
||
@pytest.mark.skipif(is_win32(), reason="requires Unix or macOS")
|
||
def test_find_macos_font(self, monkeypatch):
|
||
# Like the linux test, more cover hitting code rather than testing
|
||
# correctness.
|
||
font_directory = "/System/Library/Fonts"
|
||
monkeypatch.setattr(sys, "platform", "darwin")
|
||
|
||
def fake_walker(path):
|
||
if path == font_directory:
|
||
return [
|
||
(
|
||
path,
|
||
[],
|
||
["Arial.ttf", "Single.otf", "Duplicate.otf", "Duplicate.ttf"],
|
||
)
|
||
]
|
||
return [(path, [], ["some_random_font.ttf"])]
|
||
|
||
monkeypatch.setattr(os, "walk", fake_walker)
|
||
self._test_fake_loading_font(
|
||
monkeypatch, font_directory + "/Arial.ttf", "Arial.ttf"
|
||
)
|
||
self._test_fake_loading_font(
|
||
monkeypatch, font_directory + "/Arial.ttf", "Arial"
|
||
)
|
||
self._test_fake_loading_font(
|
||
monkeypatch, font_directory + "/Single.otf", "Single"
|
||
)
|
||
self._test_fake_loading_font(
|
||
monkeypatch, font_directory + "/Duplicate.ttf", "Duplicate"
|
||
)
|
||
|
||
def test_imagefont_getters(self):
|
||
# Arrange
|
||
t = self.get_font()
|
||
|
||
# Act / Assert
|
||
assert t.getmetrics() == (16, 4)
|
||
assert t.font.ascent == 16
|
||
assert t.font.descent == 4
|
||
assert t.font.height == 20
|
||
assert t.font.x_ppem == 20
|
||
assert t.font.y_ppem == 20
|
||
assert t.font.glyphs == 4177
|
||
assert t.getsize("A") == (12, 16)
|
||
assert t.getsize("AB") == (24, 16)
|
||
assert t.getsize("M") == self.metrics["getters"]
|
||
assert t.getsize("y") == (12, 20)
|
||
assert t.getsize("a") == (12, 16)
|
||
assert t.getsize_multiline("A") == (12, 16)
|
||
assert t.getsize_multiline("AB") == (24, 16)
|
||
assert t.getsize_multiline("a") == (12, 16)
|
||
assert t.getsize_multiline("ABC\n") == (36, 36)
|
||
assert t.getsize_multiline("ABC\nA") == (36, 36)
|
||
assert t.getsize_multiline("ABC\nAaaa") == (48, 36)
|
||
|
||
def test_getsize_stroke(self):
|
||
# Arrange
|
||
t = self.get_font()
|
||
|
||
# Act / Assert
|
||
for stroke_width in [0, 2]:
|
||
assert t.getsize("A", stroke_width=stroke_width) == (
|
||
12 + stroke_width * 2,
|
||
16 + stroke_width * 2,
|
||
)
|
||
assert t.getsize_multiline("ABC\nAaaa", stroke_width=stroke_width) == (
|
||
48 + stroke_width * 2,
|
||
36 + stroke_width * 4,
|
||
)
|
||
|
||
def test_complex_font_settings(self):
|
||
# Arrange
|
||
t = self.get_font()
|
||
# Act / Assert
|
||
if t.layout_engine == ImageFont.LAYOUT_BASIC:
|
||
with pytest.raises(KeyError):
|
||
t.getmask("абвг", direction="rtl")
|
||
with pytest.raises(KeyError):
|
||
t.getmask("абвг", features=["-kern"])
|
||
with pytest.raises(KeyError):
|
||
t.getmask("абвг", language="sr")
|
||
|
||
def test_variation_get(self):
|
||
font = self.get_font()
|
||
|
||
freetype = parse_version(features.version_module("freetype2"))
|
||
if freetype < parse_version("2.9.1"):
|
||
with pytest.raises(NotImplementedError):
|
||
font.get_variation_names()
|
||
with pytest.raises(NotImplementedError):
|
||
font.get_variation_axes()
|
||
return
|
||
|
||
with pytest.raises(OSError):
|
||
font.get_variation_names()
|
||
with pytest.raises(OSError):
|
||
font.get_variation_axes()
|
||
|
||
font = ImageFont.truetype("Tests/fonts/AdobeVFPrototype.ttf")
|
||
assert font.get_variation_names(), [
|
||
b"ExtraLight",
|
||
b"Light",
|
||
b"Regular",
|
||
b"Semibold",
|
||
b"Bold",
|
||
b"Black",
|
||
b"Black Medium Contrast",
|
||
b"Black High Contrast",
|
||
b"Default",
|
||
]
|
||
assert font.get_variation_axes() == [
|
||
{"name": b"Weight", "minimum": 200, "maximum": 900, "default": 389},
|
||
{"name": b"Contrast", "minimum": 0, "maximum": 100, "default": 0},
|
||
]
|
||
|
||
font = ImageFont.truetype("Tests/fonts/TINY5x3GX.ttf")
|
||
assert font.get_variation_names() == [
|
||
b"20",
|
||
b"40",
|
||
b"60",
|
||
b"80",
|
||
b"100",
|
||
b"120",
|
||
b"140",
|
||
b"160",
|
||
b"180",
|
||
b"200",
|
||
b"220",
|
||
b"240",
|
||
b"260",
|
||
b"280",
|
||
b"300",
|
||
b"Regular",
|
||
]
|
||
assert font.get_variation_axes() == [
|
||
{"name": b"Size", "minimum": 0, "maximum": 300, "default": 0}
|
||
]
|
||
|
||
def _check_text(self, font, path, epsilon):
|
||
im = Image.new("RGB", (100, 75), "white")
|
||
d = ImageDraw.Draw(im)
|
||
d.text((10, 10), "Text", font=font, fill="black")
|
||
|
||
try:
|
||
with Image.open(path) as expected:
|
||
assert_image_similar(im, expected, epsilon)
|
||
except AssertionError:
|
||
if "_adobe" in path:
|
||
path = path.replace("_adobe", "_adobe_older_harfbuzz")
|
||
with Image.open(path) as expected:
|
||
assert_image_similar(im, expected, epsilon)
|
||
else:
|
||
raise
|
||
|
||
def test_variation_set_by_name(self):
|
||
font = self.get_font()
|
||
|
||
freetype = parse_version(features.version_module("freetype2"))
|
||
if freetype < parse_version("2.9.1"):
|
||
with pytest.raises(NotImplementedError):
|
||
font.set_variation_by_name("Bold")
|
||
return
|
||
|
||
with pytest.raises(OSError):
|
||
font.set_variation_by_name("Bold")
|
||
|
||
font = ImageFont.truetype("Tests/fonts/AdobeVFPrototype.ttf", 36)
|
||
self._check_text(font, "Tests/images/variation_adobe.png", 11)
|
||
for name in ["Bold", b"Bold"]:
|
||
font.set_variation_by_name(name)
|
||
self._check_text(font, "Tests/images/variation_adobe_name.png", 11)
|
||
|
||
font = ImageFont.truetype("Tests/fonts/TINY5x3GX.ttf", 36)
|
||
self._check_text(font, "Tests/images/variation_tiny.png", 40)
|
||
for name in ["200", b"200"]:
|
||
font.set_variation_by_name(name)
|
||
self._check_text(font, "Tests/images/variation_tiny_name.png", 40)
|
||
|
||
def test_variation_set_by_axes(self):
|
||
font = self.get_font()
|
||
|
||
freetype = parse_version(features.version_module("freetype2"))
|
||
if freetype < parse_version("2.9.1"):
|
||
with pytest.raises(NotImplementedError):
|
||
font.set_variation_by_axes([100])
|
||
return
|
||
|
||
with pytest.raises(OSError):
|
||
font.set_variation_by_axes([500, 50])
|
||
|
||
font = ImageFont.truetype("Tests/fonts/AdobeVFPrototype.ttf", 36)
|
||
font.set_variation_by_axes([500, 50])
|
||
self._check_text(font, "Tests/images/variation_adobe_axes.png", 11.05)
|
||
|
||
font = ImageFont.truetype("Tests/fonts/TINY5x3GX.ttf", 36)
|
||
font.set_variation_by_axes([100])
|
||
self._check_text(font, "Tests/images/variation_tiny_axes.png", 32.5)
|
||
|
||
@pytest.mark.parametrize(
|
||
"anchor",
|
||
(
|
||
# test horizontal anchors
|
||
"ls",
|
||
"ms",
|
||
"rs",
|
||
# test vertical anchors
|
||
"ma",
|
||
"mt",
|
||
"mm",
|
||
"mb",
|
||
"md",
|
||
),
|
||
)
|
||
def test_anchor(self, anchor):
|
||
name, text = "quick", "Quick"
|
||
path = f"Tests/images/test_anchor_{name}_{anchor}.png"
|
||
f = ImageFont.truetype(
|
||
"Tests/fonts/NotoSans-Regular.ttf", 48, layout_engine=self.LAYOUT_ENGINE
|
||
)
|
||
|
||
im = Image.new("RGB", (200, 200), "white")
|
||
d = ImageDraw.Draw(im)
|
||
d.line(((0, 100), (200, 100)), "gray")
|
||
d.line(((100, 0), (100, 200)), "gray")
|
||
d.text((100, 100), text, fill="black", anchor=anchor, font=f)
|
||
|
||
with Image.open(path) as expected:
|
||
assert_image_similar(im, expected, 7)
|
||
|
||
@pytest.mark.parametrize(
|
||
"anchor,align",
|
||
(
|
||
# test horizontal anchors
|
||
("lm", "left"),
|
||
("lm", "center"),
|
||
("lm", "right"),
|
||
("mm", "left"),
|
||
("mm", "center"),
|
||
("mm", "right"),
|
||
("rm", "left"),
|
||
("rm", "center"),
|
||
("rm", "right"),
|
||
# test vertical anchors
|
||
("ma", "center"),
|
||
# ("mm", "center"), # duplicate
|
||
("md", "center"),
|
||
),
|
||
)
|
||
def test_anchor_multiline(self, anchor, align):
|
||
target = f"Tests/images/test_anchor_multiline_{anchor}_{align}.png"
|
||
text = "a\nlong\ntext sample"
|
||
|
||
f = ImageFont.truetype(
|
||
"Tests/fonts/NotoSans-Regular.ttf", 48, layout_engine=self.LAYOUT_ENGINE
|
||
)
|
||
|
||
# test render
|
||
im = Image.new("RGB", (600, 400), "white")
|
||
d = ImageDraw.Draw(im)
|
||
d.line(((0, 200), (600, 200)), "gray")
|
||
d.line(((300, 0), (300, 400)), "gray")
|
||
d.multiline_text(
|
||
(300, 200), text, fill="black", anchor=anchor, font=f, align=align
|
||
)
|
||
|
||
with Image.open(target) as expected:
|
||
assert_image_similar(im, expected, self.metrics["multiline-anchor"])
|
||
|
||
def test_anchor_invalid(self):
|
||
font = self.get_font()
|
||
im = Image.new("RGB", (100, 100), "white")
|
||
d = ImageDraw.Draw(im)
|
||
d.font = font
|
||
|
||
for anchor in ["", "l", "a", "lax", "sa", "xa", "lx"]:
|
||
pytest.raises(ValueError, lambda: font.getmask2("hello", anchor=anchor))
|
||
pytest.raises(ValueError, lambda: d.text((0, 0), "hello", anchor=anchor))
|
||
pytest.raises(
|
||
ValueError, lambda: d.multiline_text((0, 0), "foo\nbar", anchor=anchor)
|
||
)
|
||
for anchor in ["lt", "lb"]:
|
||
pytest.raises(
|
||
ValueError, lambda: d.multiline_text((0, 0), "foo\nbar", anchor=anchor)
|
||
)
|
||
|
||
|
||
@skip_unless_feature("raqm")
|
||
class TestImageFont_RaqmLayout(TestImageFont):
|
||
LAYOUT_ENGINE = ImageFont.LAYOUT_RAQM
|
||
|
||
|
||
def test_render_mono_size():
|
||
# issue 4177
|
||
|
||
if parse_version(ImageFont.core.freetype2_version) < parse_version("2.4"):
|
||
pytest.skip("Different metrics")
|
||
|
||
im = Image.new("P", (100, 30), "white")
|
||
draw = ImageDraw.Draw(im)
|
||
ttf = ImageFont.truetype(
|
||
"Tests/fonts/DejaVuSans.ttf", 18, layout_engine=ImageFont.LAYOUT_BASIC
|
||
)
|
||
|
||
draw.text((10, 10), "r" * 10, "black", ttf)
|
||
assert_image_equal_tofile(im, "Tests/images/text_mono.gif")
|