gtk_ui.py 文件源码

def _parse_font(font, cr=None):
    if not cr:
        ims = cairo.ImageSurface(cairo.FORMAT_RGB24, 300, 300)
        cr = cairo.Context(ims)
    fd = Pango.font_description_from_string(font)
    layout = PangoCairo.create_layout(cr)
    layout.set_font_description(fd)
    layout.set_alignment(Pango.Alignment.LEFT)
    layout.set_markup('<span font_weight="bold">A</span>')
    bold_width, _ = layout.get_size()
    layout.set_markup('<span>A</span>')
    pixels = layout.get_pixel_size()
    normal_width, _ = layout.get_size()
    return fd, pixels, normal_width, bold_width