freetype_test.py 文件源码

def test_issue_242(self):
        """Issue #242: get_rect() uses 0 as default style"""

        # Issue #242: freetype.Font.get_rect() ignores style defaults when
        #             the style argument is not given
        #
        # The text boundary rectangle returned by freetype.Font.get_rect()
        # should match the boundary of the same text rendered directly to a
        # surface. This permits accurate text positioning. To work properly,
        # get_rect() should calculate the text boundary to reflect text style,
        # such as underline. Instead, it ignores the style settings for the
        # Font object when the style argument is omitted.
        # 
        # When the style argument is not given, freetype.get_rect() uses
        # unstyled text when calculating the boundary rectangle. This is
        # because _ftfont_getrect(), in _freetype.c, set the default
        # style to 0 rather than FT_STYLE_DEFAULT.
        #
        font = self._TEST_FONTS['sans']

        # Try wide style on a wide character.
        prev_style = font.wide
        font.wide = True
        try:
            rect = font.get_rect('M', size=64)
            surf, rrect = font.render(None, size=64)
            self.assertEqual(rect, rrect)
        finally:
            font.wide = prev_style

        # Try strong style on several wide characters.
        prev_style = font.strong
        font.strong = True
        try:
            rect = font.get_rect('Mm_', size=64)
            surf, rrect = font.render(None, size=64)
            self.assertEqual(rect, rrect)
        finally:
            font.strong = prev_style

        # Try oblique style on a tall, narrow character.
        prev_style = font.oblique
        font.oblique = True
        try:
            rect = font.get_rect('|', size=64)
            surf, rrect = font.render(None, size=64)
            self.assertEqual(rect, rrect)
        finally:
            font.oblique = prev_style

        # Try underline style on a glyphless character.
        prev_style = font.underline
        font.underline = True
        try:
            rect = font.get_rect(' ', size=64)
            surf, rrect = font.render(None, size=64)
            self.assertEqual(rect, rrect)
        finally:
            font.underline = prev_style