def __init__(self, surface, *al, **ad):
self._renderer = self._dwg = surface
self._bounds = Extents()
self._padding = PADDING
self._stack = []
self._m = Affine.translation(0, 0)
self._xy = (0, 0)
self._mxy = self._m * self._xy
self._lw = 0
self._rgb = (0, 0, 0)
self._ff = "sans-serif"
self._fs = 10
self._last_path = None
def _adjust_coordinates(self):
extents = self.extents()
extents.xmin -= PADDING
extents.ymin -= PADDING
extents.xmax += PADDING
extents.ymax += PADDING
m = Affine.translation(-extents.xmin, -extents.ymin)
if self.invert_y:
m = Affine.scale(self.scale, -self.scale) * m
m = Affine.translation(0, self.scale*extents.height) * m
else:
m = Affine.scale(self.scale, self.scale) * m
self.transform(m, self.invert_y)
return Extents(0, 0, extents.width * self.scale, extents.height * self.scale)
def extents(self):
e = Extents()
for p in self.path:
e.add(*p[1:3])
if p[0] == 'T':
m, text, params = p[3:]
h = params['fs']
l = len(text) * h * 0.7
align = params.get('align', 'left')
start, end = {
'left': (0, 1),
'middle': (-0.5, 0.5),
'end': (-1, 0),
}[align]
for x in (start * l, end * l):
for y in (0, h):
x_, y_ = m * (x, y)
e.add(x_, y_)
return e
def extents(self):
if not self.parts:
return Extents()
return sum([p.extents() for p in self.parts])
