mirror of
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1034 lines
34 KiB
Python
1034 lines
34 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_tofile,
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is_win32,
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skip_unless_feature,
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skip_unless_feature_version,
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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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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/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 _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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assert_image_similar_tofile(im, target, 4.09)
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target = "Tests/images/transparent_background_text_L.png"
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assert_image_similar_tofile(im.convert("L"), target, 0.01)
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def test_I16(self):
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im = Image.new(mode="I;16", 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_L.png"
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assert_image_similar_tofile(im.convert("L"), target, 0.01)
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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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assert_image_similar_tofile(
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im, "Tests/images/rectangle_surrounding_text.png", 2.5
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)
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@pytest.mark.parametrize(
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"text, mode, font, size, length_basic, length_raqm",
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(
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# basic test
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("text", "L", "FreeMono.ttf", 15, 36, 36),
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("text", "1", "FreeMono.ttf", 15, 36, 36),
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# issue 4177
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("rrr", "L", "DejaVuSans/DejaVuSans.ttf", 18, 21, 22.21875),
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("rrr", "1", "DejaVuSans/DejaVuSans.ttf", 18, 24, 22.21875),
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# test 'l' not including extra margin
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# using exact value 2047 / 64 for raqm, checked with debugger
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("ill", "L", "OpenSansCondensed-LightItalic.ttf", 63, 33, 31.984375),
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("ill", "1", "OpenSansCondensed-LightItalic.ttf", 63, 33, 31.984375),
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),
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)
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def test_getlength(self, text, mode, font, size, length_basic, length_raqm):
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f = ImageFont.truetype(
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"Tests/fonts/" + font, size, layout_engine=self.LAYOUT_ENGINE
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)
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im = Image.new(mode, (1, 1), 0)
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d = ImageDraw.Draw(im)
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if self.LAYOUT_ENGINE == ImageFont.Layout.BASIC:
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length = d.textlength(text, f)
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assert length == length_basic
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else:
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# disable kerning, kerning metrics changed
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length = d.textlength(text, f, features=["-kern"])
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assert length == length_raqm
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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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# 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_tofile(im, "Tests/images/multiline_text.png", 6.2)
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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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assert_image_similar_tofile(im, "Tests/images/multiline_text.png", 0.01)
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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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assert_image_similar_tofile(
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im, "Tests/images/multiline_text" + ext + ".png", 0.01
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)
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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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assert_image_similar_tofile(im, "Tests/images/multiline_text_spacing.png", 2.5)
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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.Transpose.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.Transpose.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 == (13, 108)
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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 == (108, 13)
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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 == (108, 13)
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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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# 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_tofile(im, "Tests/images/default_font.png")
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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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|
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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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||
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
|
||
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)
|
||
|
||
def loadable_font(filepath, size, index, encoding, *args, **kwargs):
|
||
if filepath == path_to_fake:
|
||
return ImageFont._FreeTypeFont(
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FONT_PATH, size, index, encoding, *args, **kwargs
|
||
)
|
||
return ImageFont._FreeTypeFont(
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||
filepath, size, index, encoding, *args, **kwargs
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||
)
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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"
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||
monkeypatch.setattr(sys, "platform", "linux")
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||
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") == (12, 16)
|
||
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:
|
||
assert_image_similar_tofile(im, path, epsilon)
|
||
except AssertionError:
|
||
if "_adobe" in path:
|
||
path = path.replace("_adobe", "_adobe_older_harfbuzz")
|
||
assert_image_similar_tofile(im, path, 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)
|
||
|
||
def test_textbbox_non_freetypefont(self):
|
||
im = Image.new("RGB", (200, 200))
|
||
d = ImageDraw.Draw(im)
|
||
default_font = ImageFont.load_default()
|
||
with pytest.raises(ValueError):
|
||
d.textbbox((0, 0), "test", font=default_font)
|
||
|
||
@pytest.mark.parametrize(
|
||
"anchor, left, top",
|
||
(
|
||
# test horizontal anchors
|
||
("ls", 0, -36),
|
||
("ms", -64, -36),
|
||
("rs", -128, -36),
|
||
# test vertical anchors
|
||
("ma", -64, 16),
|
||
("mt", -64, 0),
|
||
("mm", -64, -17),
|
||
("mb", -64, -44),
|
||
("md", -64, -51),
|
||
),
|
||
ids=("ls", "ms", "rs", "ma", "mt", "mm", "mb", "md"),
|
||
)
|
||
def test_anchor(self, anchor, left, top):
|
||
name, text = "quick", "Quick"
|
||
path = f"Tests/images/test_anchor_{name}_{anchor}.png"
|
||
|
||
if self.LAYOUT_ENGINE == ImageFont.Layout.RAQM:
|
||
width, height = (129, 44)
|
||
else:
|
||
width, height = (128, 44)
|
||
|
||
bbox_expected = (left, top, left + width, top + height)
|
||
|
||
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)
|
||
|
||
assert d.textbbox((0, 0), text, f, anchor=anchor) == bbox_expected
|
||
|
||
assert_image_similar_tofile(im, path, 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
|
||
)
|
||
|
||
assert_image_similar_tofile(im, target, 4)
|
||
|
||
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: font.getbbox("hello", anchor=anchor))
|
||
pytest.raises(ValueError, lambda: d.text((0, 0), "hello", anchor=anchor))
|
||
pytest.raises(
|
||
ValueError, lambda: d.textbbox((0, 0), "hello", anchor=anchor)
|
||
)
|
||
pytest.raises(
|
||
ValueError, lambda: d.multiline_text((0, 0), "foo\nbar", anchor=anchor)
|
||
)
|
||
pytest.raises(
|
||
ValueError,
|
||
lambda: d.multiline_textbbox((0, 0), "foo\nbar", anchor=anchor),
|
||
)
|
||
for anchor in ["lt", "lb"]:
|
||
pytest.raises(
|
||
ValueError, lambda: d.multiline_text((0, 0), "foo\nbar", anchor=anchor)
|
||
)
|
||
pytest.raises(
|
||
ValueError,
|
||
lambda: d.multiline_textbbox((0, 0), "foo\nbar", anchor=anchor),
|
||
)
|
||
|
||
@skip_unless_feature("freetype2")
|
||
@pytest.mark.parametrize("bpp", (1, 2, 4, 8))
|
||
def test_bitmap_font(self, bpp):
|
||
text = "Bitmap Font"
|
||
layout_name = ["basic", "raqm"][self.LAYOUT_ENGINE]
|
||
target = f"Tests/images/bitmap_font_{bpp}_{layout_name}.png"
|
||
font = ImageFont.truetype(
|
||
f"Tests/fonts/DejaVuSans/DejaVuSans-24-{bpp}-stripped.ttf",
|
||
24,
|
||
layout_engine=self.LAYOUT_ENGINE,
|
||
)
|
||
|
||
im = Image.new("RGB", (160, 35), "white")
|
||
draw = ImageDraw.Draw(im)
|
||
draw.text((2, 2), text, "black", font)
|
||
|
||
assert_image_equal_tofile(im, target)
|
||
|
||
def test_bitmap_font_stroke(self):
|
||
text = "Bitmap Font"
|
||
layout_name = ["basic", "raqm"][self.LAYOUT_ENGINE]
|
||
target = f"Tests/images/bitmap_font_stroke_{layout_name}.png"
|
||
font = ImageFont.truetype(
|
||
"Tests/fonts/DejaVuSans/DejaVuSans-24-8-stripped.ttf",
|
||
24,
|
||
layout_engine=self.LAYOUT_ENGINE,
|
||
)
|
||
|
||
im = Image.new("RGB", (160, 35), "white")
|
||
draw = ImageDraw.Draw(im)
|
||
draw.text((2, 2), text, "black", font, stroke_width=2, stroke_fill="red")
|
||
|
||
assert_image_similar_tofile(im, target, 0.03)
|
||
|
||
def test_standard_embedded_color(self):
|
||
txt = "Hello World!"
|
||
ttf = ImageFont.truetype(FONT_PATH, 40, layout_engine=self.LAYOUT_ENGINE)
|
||
ttf.getsize(txt)
|
||
|
||
im = Image.new("RGB", (300, 64), "white")
|
||
d = ImageDraw.Draw(im)
|
||
d.text((10, 10), txt, font=ttf, fill="#fa6", embedded_color=True)
|
||
|
||
assert_image_similar_tofile(im, "Tests/images/standard_embedded.png", 6.2)
|
||
|
||
def test_cbdt(self):
|
||
try:
|
||
font = ImageFont.truetype(
|
||
"Tests/fonts/NotoColorEmoji.ttf",
|
||
size=109,
|
||
layout_engine=self.LAYOUT_ENGINE,
|
||
)
|
||
|
||
im = Image.new("RGB", (150, 150), "white")
|
||
d = ImageDraw.Draw(im)
|
||
|
||
d.text((10, 10), "\U0001f469", font=font, embedded_color=True)
|
||
|
||
assert_image_similar_tofile(im, "Tests/images/cbdt_notocoloremoji.png", 6.2)
|
||
except OSError as e: # pragma: no cover
|
||
assert str(e) in ("unimplemented feature", "unknown file format")
|
||
pytest.skip("freetype compiled without libpng or CBDT support")
|
||
|
||
def test_cbdt_mask(self):
|
||
try:
|
||
font = ImageFont.truetype(
|
||
"Tests/fonts/NotoColorEmoji.ttf",
|
||
size=109,
|
||
layout_engine=self.LAYOUT_ENGINE,
|
||
)
|
||
|
||
im = Image.new("RGB", (150, 150), "white")
|
||
d = ImageDraw.Draw(im)
|
||
|
||
d.text((10, 10), "\U0001f469", "black", font=font)
|
||
|
||
assert_image_similar_tofile(
|
||
im, "Tests/images/cbdt_notocoloremoji_mask.png", 6.2
|
||
)
|
||
except OSError as e: # pragma: no cover
|
||
assert str(e) in ("unimplemented feature", "unknown file format")
|
||
pytest.skip("freetype compiled without libpng or CBDT support")
|
||
|
||
def test_sbix(self):
|
||
try:
|
||
font = ImageFont.truetype(
|
||
"Tests/fonts/chromacheck-sbix.woff",
|
||
size=300,
|
||
layout_engine=self.LAYOUT_ENGINE,
|
||
)
|
||
|
||
im = Image.new("RGB", (400, 400), "white")
|
||
d = ImageDraw.Draw(im)
|
||
|
||
d.text((50, 50), "\uE901", font=font, embedded_color=True)
|
||
|
||
assert_image_similar_tofile(im, "Tests/images/chromacheck-sbix.png", 1)
|
||
except OSError as e: # pragma: no cover
|
||
assert str(e) in ("unimplemented feature", "unknown file format")
|
||
pytest.skip("freetype compiled without libpng or SBIX support")
|
||
|
||
def test_sbix_mask(self):
|
||
try:
|
||
font = ImageFont.truetype(
|
||
"Tests/fonts/chromacheck-sbix.woff",
|
||
size=300,
|
||
layout_engine=self.LAYOUT_ENGINE,
|
||
)
|
||
|
||
im = Image.new("RGB", (400, 400), "white")
|
||
d = ImageDraw.Draw(im)
|
||
|
||
d.text((50, 50), "\uE901", (100, 0, 0), font=font)
|
||
|
||
assert_image_similar_tofile(im, "Tests/images/chromacheck-sbix_mask.png", 1)
|
||
except OSError as e: # pragma: no cover
|
||
assert str(e) in ("unimplemented feature", "unknown file format")
|
||
pytest.skip("freetype compiled without libpng or SBIX support")
|
||
|
||
@skip_unless_feature_version("freetype2", "2.10.0")
|
||
def test_colr(self):
|
||
font = ImageFont.truetype(
|
||
"Tests/fonts/BungeeColor-Regular_colr_Windows.ttf",
|
||
size=64,
|
||
layout_engine=self.LAYOUT_ENGINE,
|
||
)
|
||
|
||
im = Image.new("RGB", (300, 75), "white")
|
||
d = ImageDraw.Draw(im)
|
||
|
||
d.text((15, 5), "Bungee", font=font, embedded_color=True)
|
||
|
||
assert_image_similar_tofile(im, "Tests/images/colr_bungee.png", 21)
|
||
|
||
@skip_unless_feature_version("freetype2", "2.10.0")
|
||
def test_colr_mask(self):
|
||
font = ImageFont.truetype(
|
||
"Tests/fonts/BungeeColor-Regular_colr_Windows.ttf",
|
||
size=64,
|
||
layout_engine=self.LAYOUT_ENGINE,
|
||
)
|
||
|
||
im = Image.new("RGB", (300, 75), "white")
|
||
d = ImageDraw.Draw(im)
|
||
|
||
d.text((15, 5), "Bungee", "black", font=font)
|
||
|
||
assert_image_similar_tofile(im, "Tests/images/colr_bungee_mask.png", 22)
|
||
|
||
|
||
@skip_unless_feature("raqm")
|
||
class TestImageFont_RaqmLayout(TestImageFont):
|
||
LAYOUT_ENGINE = ImageFont.Layout.RAQM
|
||
|
||
|
||
def test_render_mono_size():
|
||
# issue 4177
|
||
|
||
im = Image.new("P", (100, 30), "white")
|
||
draw = ImageDraw.Draw(im)
|
||
ttf = ImageFont.truetype(
|
||
"Tests/fonts/DejaVuSans/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")
|
||
|
||
|
||
@pytest.mark.parametrize(
|
||
"test_file",
|
||
[
|
||
"Tests/fonts/oom-e8e927ba6c0d38274a37c1567560eb33baf74627.ttf",
|
||
],
|
||
)
|
||
def test_oom(test_file):
|
||
with open(test_file, "rb") as f:
|
||
font = ImageFont.truetype(BytesIO(f.read()))
|
||
with pytest.raises(Image.DecompressionBombError):
|
||
font.getmask("Test Text")
|
||
|
||
|
||
def test_raqm_missing_warning(monkeypatch):
|
||
monkeypatch.setattr(ImageFont.core, "HAVE_RAQM", False)
|
||
with pytest.warns(UserWarning) as record:
|
||
font = ImageFont.truetype(
|
||
FONT_PATH, FONT_SIZE, layout_engine=ImageFont.Layout.RAQM
|
||
)
|
||
assert font.layout_engine == ImageFont.Layout.BASIC
|
||
assert str(record[-1].message) == (
|
||
"Raqm layout was requested, but Raqm is not available. "
|
||
"Falling back to basic layout."
|
||
)
|
||
|
||
|
||
def test_constants_deprecation():
|
||
for enum, prefix in {
|
||
ImageFont.Layout: "LAYOUT_",
|
||
}.items():
|
||
for name in enum.__members__:
|
||
with pytest.warns(DeprecationWarning):
|
||
assert getattr(ImageFont, prefix + name) == enum[name]
|