def test_layout_setting_properties():
context = Context()
layout = Layout(context)
layout.set_width(300)
assert layout.get_width() == 300
layout.set_height(400)
assert layout.get_height() == 400
assert layout.get_spacing() == 0
layout.set_spacing(30)
assert layout.get_spacing() == 30
layout.set_alignment(Alignment.CENTER)
assert layout.get_alignment() is Alignment.CENTER
layout.set_ellipsize(EllipsizeMode.MIDDLE)
assert layout.get_ellipsize() is EllipsizeMode.MIDDLE
ink_rect, logical_rect = layout.get_extents()
assert logical_rect.width == 0
assert logical_rect.height == 0
width, height = layout.get_size()
assert width == 0
assert height == 0
baseline = layout.get_baseline()
assert baseline == 0
line_count = layout.get_line_count()
assert line_count == 1
def __init__(self, line_string: LineString, layout: Layout):
if layout.get_line_count() > 1:
raise ValueError('layout cannot be more than one line.')
self._layout = layout
self._input_line_string = line_string
self._layout_text = layout.get_text()
self._alignment = Alignment.LEFT
self._start_offset = 0
self._vertical_offset = 0
self._side = Side.LEFT
self._layout_clusters = LayoutClusters(self._layout)
self._layout_engine_class = SvgLayoutEngine
self._layout_engine = None
def test_layout_setting_properties(self):
layout = Layout(self.pango_context)
layout.set_width(300)
assert layout.get_width() == 300
layout.set_height(400)
assert layout.get_height() == 400
assert layout.get_spacing() == 0
layout.set_spacing(30)
assert layout.get_spacing() == 30
layout.set_alignment(Alignment.CENTER)
assert layout.get_alignment() is Alignment.CENTER
layout.set_ellipsize(EllipsizeMode.MIDDLE)
assert layout.get_ellipsize() is EllipsizeMode.MIDDLE
layout.set_wrap(WrapMode.WORD_CHAR)
assert layout.get_wrap() is WrapMode.WORD_CHAR
ink_rect, logical_rect = layout.get_extents()
assert logical_rect.width == 0
# The height of the layout will be the height of the font, despite no
# text being set against the layout.
assert logical_rect.height > 0
width, height = layout.get_size()
assert width == 0
# The height of the layout will be the height of the font, despite no
# text being set against the layout.
assert height > 0
baseline = layout.get_baseline()
# The baseline of the layout will correspond to the selected font,
# despite no text being set against the layout.
assert baseline > 0
line_count = layout.get_line_count()
assert line_count == 1
def compute_subtext_extents(layout: Layout, parsed_text,
id_index: int) -> Tuple[float, float]:
"""
Returns the x coordinate and width of a subtext of a single line.
"""
assert layout.get_line_count() == 1
(start, end) = get_byte_range(parsed_text, id_index)
iter = layout.get_iter()
x = None
width = 0
while True:
byte_offset = iter.get_index()
if start <= byte_offset < end:
extents = from_pango_rect(iter.get_char_extents())
if x is None:
assert start == byte_offset
x = extents.x
width += extents.width
if byte_offset >= end or not iter.next_char():
break
assert x is not None
return (x, width)
