magnum-bindings/src/python/magnum/test/test_text_gl.py

#
#   This file is part of Magnum.
#
#   Copyright © 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019,
#               2020, 2021, 2022, 2023 Vladimír Vondruš <mosra@centrum.cz>
#
#   Permission is hereby granted, free of charge, to any person obtaining a
#   copy of this software and associated documentation files (the "Software"),
#   to deal in the Software without restriction, including without limitation
#   the rights to use, copy, modify, merge, publish, distribute, sublicense,
#   and/or sell copies of the Software, and to permit persons to whom the
#   Software is furnished to do so, subject to the following conditions:
#
#   The above copyright notice and this permission notice shall be included
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#   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
#   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
#   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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import os
import sys
import unittest

# setUpModule gets called before everything else, skipping if GL tests can't
# be run
from . import GLTestCase, setUpModule

from corrade import pluginmanager
import magnum
from magnum import *
from magnum import gl, text

class GlyphCache(GLTestCase):
    def test(self):
        cache = text.GlyphCache((128, 128), (2, 2))

        self.assertEqual(cache.size, (128, 128, 1))
        self.assertEqual(cache.padding, (2, 2))

        cache_refcount = sys.getrefcount(cache)

        # Returned texture references the cache to ensure it doesn't get GC'd
        # before the texture instances
        texture = cache.texture
        self.assertEqual(sys.getrefcount(cache), cache_refcount + 1)

        # Deleting the texture should decrease cache refcount again
        del texture
        self.assertEqual(sys.getrefcount(cache), cache_refcount)

class DistanceFieldGlyphCache(GLTestCase):
    def test(self):
        cache = text.DistanceFieldGlyphCache((1024, 1024), (128, 128), 2)

        self.assertEqual(cache.size, (1024, 1024, 1))
        self.assertEqual(cache.padding, (2, 2))

class Renderer2D(GLTestCase):
    @unittest.skipIf(magnum.TARGET_GLES2, "Needs OES_mapbuffer on ES2 and extension queries are not exposed to Python yet")
    def test(self):
        font = text.FontManager().load_and_instantiate('StbTrueTypeFont')
        font.open_file(os.path.join(os.path.dirname(__file__), 'Oxygen.ttf'), 16.0)

        cache = text.GlyphCache((128, 128))
        font.fill_glyph_cache(cache, "hello")

        renderer = text.Renderer2D(font, cache, 1.0)
        renderer.reserve(16)
        renderer.render("hello")

        self.assertEqual(renderer.rectangle, Range2D((0.0625, -0.0625), (2.4807, 0.875)))