from tester import * from PIL import Image from io import BytesIO import os try: from PIL import ImageFont ImageFont.core.getfont # check if freetype is available except ImportError: skip() from PIL import ImageDraw font_path = "Tests/fonts/FreeMono.ttf" font_size=20 def test_sanity(): assert_match(ImageFont.core.freetype2_version, "\d+\.\d+\.\d+$") def test_font_with_name(): assert_no_exception(lambda: ImageFont.truetype(font_path, font_size)) assert_no_exception(lambda: _render(font_path)) _clean() def _font_as_bytes(): with open(font_path, 'rb') as f: font_bytes = BytesIO(f.read()) return font_bytes def test_font_with_filelike(): assert_no_exception(lambda: ImageFont.truetype(_font_as_bytes(), font_size)) assert_no_exception(lambda: _render(_font_as_bytes())) # Usage note: making two fonts from the same buffer fails. #shared_bytes = _font_as_bytes() #assert_no_exception(lambda: _render(shared_bytes)) #assert_exception(Exception, lambda: _render(shared_bytes)) _clean() def test_font_with_open_file(): with open(font_path, 'rb') as f: assert_no_exception(lambda: _render(f)) _clean() def test_font_old_parameters(): assert_warning(DeprecationWarning, lambda: ImageFont.truetype(filename=font_path, size=font_size)) def _render(font): txt = "Hello World!" ttf = ImageFont.truetype(font, font_size) w, h = ttf.getsize(txt) img = Image.new("RGB", (256, 64), "white") d = ImageDraw.Draw(img) d.text((10, 10), txt, font=ttf, fill='black') img.save('font.png') return img def _clean(): os.unlink('font.png') def test_render_equal(): img_path = _render(font_path) with open(font_path, 'rb') as f: font_filelike = BytesIO(f.read()) img_filelike = _render(font_filelike) assert_image_equal(img_path, img_filelike) _clean() def test_render_multiline(): im = Image.new(mode='RGB', size=(300,100)) draw = ImageDraw.Draw(im) ttf = ImageFont.truetype(font_path, font_size) line_spacing = draw.textsize('A', font=ttf)[1] + 8 lines = ['hey you', 'you are awesome', 'this looks awkward'] y = 0 for line in lines: draw.text((0, y), line, font=ttf) y += line_spacing target = 'Tests/images/multiline_text.png' target_img = Image.open(target) # some versions of freetype have different horizontal spacing. # setting a tight epsilon, I'm showing the original test failure # at epsilon = ~38. assert_image_similar(im, target_img,.5)