8000 TST: Add tests for FT2Font drawing and path generation · matplotlib/matplotlib@06df253 · GitHub
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TST: Add tests for FT2Font drawing and path generation
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‎lib/matplotlib/tests/test_ft2font.py

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@@ -8,6 +8,7 @@
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from matplotlib import ft2font
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from matplotlib.testing.decorators import check_figures_equal
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import matplotlib.font_manager as fm
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import matplotlib.path as mpath
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import matplotlib.pyplot as plt
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@@ -764,6 +765,65 @@ def test_ft2font_loading():
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assert font.get_bitmap_offset() == (0, 0)
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def test_ft2font_drawing():
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expected_str = (
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' ',
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'11 11 ',
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'11 11 ',
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'1 1 1 1 ',
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'1 1 1 1 ',
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'1 1 1 1 ',
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'1 11 1 ',
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'1 11 1 ',
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'1 1 ',
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'1 1 ',
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' ',
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)
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expected = np.array([
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[int(c) for c in line.replace(' ', '0')] for line in expected_str
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])
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expected *= 255
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file = fm.findfont('DejaVu Sans')
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font = ft2font.FT2Font(file, hinting_factor=1, _kerning_factor=0)
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font.set_text('M')
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font.draw_glyphs_to_bitmap(antialiased=False)
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image = font.get_image()
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np.testing.assert_array_equal(image, expected)
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font = ft2font.FT2Font(file, hinting_factor=1, _kerning_factor=0)
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glyph = font.load_char(ord('M'))
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image = ft2font.FT2Image(expected.shape[1], expected.shape[0])
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font.draw_glyph_to_bitmap(image, -1, 1, glyph, antialiased=False)
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np.testing.assert_array_equal(image, expected)
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def test_ft2font_get_path():
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file = fm.findfont('DejaVu Sans')
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font = ft2font.FT2Font(file, hinting_factor=1, _kerning_factor=0)
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vertices, codes = font.get_path()
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assert vertices.shape == (0, 2)
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assert codes.shape == (0, )
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font.load_char(ord('M'))
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vertices, codes = font.get_path()
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expected_vertices = np.array([
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(0.843750, 9.000000), (2.609375, 9.000000), # Top left.
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(4.906250, 2.875000), # Top of midpoint.
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(7.218750, 9.000000), (8.968750, 9.000000), # Top right.
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(8.968750, 0.000000), (7.843750, 0.000000), # Bottom right.
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(7.843750, 7.906250), # Point under top right.
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(5.531250, 1.734375), (4.296875, 1.734375), # Bar under midpoint.
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(1.984375, 7.906250), # Point under top left.
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(1.984375, 0.000000), (0.843750, 0.000000), # Bottom left.
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(0.843750, 9.000000), # Back to top left corner.
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(0.000000, 0.000000),
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])
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np.testing.assert_array_equal(vertices, expected_vertices)
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expected_codes = np.full(expected_vertices.shape[0], mpath.Path.LINETO,
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dtype=mpath.Path.code_type)
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expected_codes[0] = mpath.Path.MOVETO
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expected_codes[-1] = mpath.Path.CLOSEPOLY
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np.testing.assert_array_equal(codes, expected_codes)
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@pytest.mark.parametrize('family_name, file_name',
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[("WenQuanYi Zen Hei", "wqy-zenhei.ttc"),
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("Noto Sans CJK JP", "NotoSansCJK.ttc"),

‎src/ft2font_wrapper.cpp

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@@ -832,9 +832,9 @@ static PyObject *PyFT2Font_draw_glyphs_to_bitmap(PyFT2Font *self, PyObject *args
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const char *PyFT2Font_draw_glyph_to_bitmap__doc__ =
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"draw_glyph_to_bitmap(self, image, x, y, glyph, antialiased=True)\n"
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"--\n\n"
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"Draw a single glyph to the bitmap at pixel locations x, y\n"
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"Note it is your responsibility to set up the bitmap manually\n"
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"with ``set_bitmap_size(w, h)`` before this call is made.\n"
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"Draw a single glyph to *image* at pixel locations *x*, *y*\n"
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"Note it is your responsibility to create the image manually\n"
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"with the correct size before this call is made.\n"
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"\n"
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"If you want automatic layout, use `.set_text` in combinations with\n"
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"`.draw_glyphs_to_bitmap`. This function is instead intended for people\n"

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