import os from PIL import FontFile, Image, ImageDraw, ImageFont, PcfFontFile from .helper import ( assert_image_equal_tofile, assert_image_similar_tofile, skip_unless_feature, ) fontname = "Tests/fonts/ter-x20b.pcf" charsets = { "iso8859-1": { "glyph_count": 223, "message": "hello, world", "image1": "Tests/images/test_draw_pbm_ter_en_target.png", }, "iso8859-2": { "glyph_count": 223, "message": "witaj świecie", "image1": "Tests/images/test_draw_pbm_ter_pl_target.png", }, "cp1250": { "glyph_count": 250, "message": "witaj świecie", "image1": "Tests/images/test_draw_pbm_ter_pl_target.png", }, } pytestmark = skip_unless_feature("zlib") def save_font(request, tmp_path, encoding): with open(fontname, "rb") as test_file: font = PcfFontFile.PcfFontFile(test_file, encoding) assert isinstance(font, FontFile.FontFile) # check the number of characters in the font assert len([_f for _f in font.glyph if _f]) == charsets[encoding]["glyph_count"] tempname = str(tmp_path / "temp.pil") def delete_tempfile(): try: os.remove(tempname[:-4] + ".pbm") except OSError: pass # report? request.addfinalizer(delete_tempfile) font.save(tempname) with Image.open(tempname.replace(".pil", ".pbm")) as loaded: assert_image_equal_tofile(loaded, f"Tests/fonts/ter-x20b-{encoding}.pbm") with open(tempname, "rb") as f_loaded: with open(f"Tests/fonts/ter-x20b-{encoding}.pil", "rb") as f_target: assert f_loaded.read() == f_target.read() return tempname def _test_sanity(request, tmp_path, encoding): save_font(request, tmp_path, encoding) def test_sanity_iso8859_1(request, tmp_path): _test_sanity(request, tmp_path, "iso8859-1") def test_sanity_iso8859_2(request, tmp_path): _test_sanity(request, tmp_path, "iso8859-2") def test_sanity_cp1250(request, tmp_path): _test_sanity(request, tmp_path, "cp1250") def _test_draw(request, tmp_path, encoding): tempname = save_font(request, tmp_path, encoding) font = ImageFont.load(tempname) im = Image.new("L", (150, 30), "white") draw = ImageDraw.Draw(im) message = charsets[encoding]["message"].encode(encoding) draw.text((0, 0), message, "black", font=font) assert_image_similar_tofile(im, charsets[encoding]["image1"], 0) def test_draw_iso8859_1(request, tmp_path): _test_draw(request, tmp_path, "iso8859-1") def test_draw_iso8859_2(request, tmp_path): _test_draw(request, tmp_path, "iso8859-2") def test_draw_cp1250(request, tmp_path): _test_draw(request, tmp_path, "cp1250") def _test_textsize(request, tmp_path, encoding): tempname = save_font(request, tmp_path, encoding) font = ImageFont.load(tempname) for i in range(255): (dx, dy) = font.getsize(bytearray([i])) assert dy == 20 assert dx in (0, 10) message = charsets[encoding]["message"].encode(encoding) for i in range(len(message)): msg = message[: i + 1] assert font.getsize(msg) == (len(msg) * 10, 20) def test_textsize_iso8859_1(request, tmp_path): _test_textsize(request, tmp_path, "iso8859-1") def test_textsize_iso8859_2(request, tmp_path): _test_textsize(request, tmp_path, "iso8859-2") def test_textsize_cp1250(request, tmp_path): _test_textsize(request, tmp_path, "cp1250")