def child_pos(self, style: Style, bounding_box: Rectangle) -> Rectangle:
if not self.sizes:
return Rectangle()
text_align = style.get("text-align", TextAlign.CENTER)
vertical_align = style.get("vertical-align", VerticalAlign.BOTTOM)
vertical_spacing = style.get("vertical-spacing",
0) # should be margin?
ws, hs = list(zip(*self.sizes))
max_w = max(ws)
total_h = sum(hs)
if text_align == TextAlign.CENTER:
x = bounding_box.x + (bounding_box.width - max_w) / 2
elif text_align == TextAlign.LEFT:
x = bounding_box.x - max_w - vertical_spacing
elif text_align == TextAlign.RIGHT:
x = bounding_box.x + bounding_box.width + vertical_spacing
if vertical_align == VerticalAlign.BOTTOM:
y = bounding_box.y + bounding_box.height + vertical_spacing
elif vertical_align == VerticalAlign.MIDDLE:
y = bounding_box.y + (bounding_box.height - total_h) / 2
elif vertical_align == VerticalAlign.TOP:
y = bounding_box.y - total_h - vertical_spacing
return Rectangle(
x,
y,
max_w,
total_h,
)
def set_font(self, font: Style):
font_family = font.get("font-family")
font_size = font.get("font-size")
font_weight = font.get("font-weight")
font_style = font.get("font-style")
assert font_family, "Font family should be set"
assert font_size, "Font size should be set"
font_id = (font_family, font_size, font_weight, font_style)
if font_id == self.font_id:
return
self.font_id = font_id
fd = Pango.FontDescription.new()
fd.set_family(font_family)
fd.set_absolute_size(font_size * Pango.SCALE)
if font_weight:
assert isinstance(font_weight, FontWeight)
fd.set_weight(getattr(Pango.Weight, font_weight.name))
if font_style:
assert isinstance(font_style, FontStyle)
fd.set_style(getattr(Pango.Style, font_style.name))
self.layout.set_font_description(fd)
underline = (
font.get("text-decoration", TextDecoration.NONE) == TextDecoration.UNDERLINE
)
if self.underline != underline:
self.underline = underline
self.update_text()