def set_position(self, axis, pos=None):
delta = max(0, self.scroll_size[axis] - self.frame.size[axis])
if pos is None:
pos = self._position[axis]
elif isinstance(pos, float):
pos = int(delta * pos)
self._position = axis.point(clamp(pos, 0, delta), self._position[axis.cross])
def constrain(self, available, value=None, clamped=True):
final = list(value or available)
for a in Axis:
v = self.size[a]
if v:
final[a] = v if isinstance(v, int) else int(v * available[a])
if clamped:
final[a] = clamp(final[a], 0, available[a])
return Size(*final)
def load(self, class_name):
for key, value in self.theme.env(class_name.lower()).items():
if key in ("padding", "border"):
value = Insets(*value).scaled(self.scale)
elif key in ("color", "background", "border_color", "text_shadow"):
value = sdl2.SDL_Color(*value)
elif key == "priority":
value = Priority[value.upper()]
elif key == "position":
value = Position[value.upper()]
elif key == "alignment":
value = Alignment[value.upper()]
elif key == "spacing":
value = self.scaled(value)
elif key == "size":
value = Size(self.scaled(value[0]), self.scaled(value[1]))
elif key == "opacity":
value = clamp(float(value), 0.0, 1.0)
setattr(self, key, value)
def opacity(self, value):
self.env.opacity = clamp(float(value), 0.0, 1.0)
return self
async def mousemotion(self, pt):
inner = self.frame - self.env.padding - self.env.border
pos = pt.x - inner.left
pct = clamp(pos / inner.width, 0.0, 1.0)
self._set(self.minimum + (pct * self.span))
def _set(self, value):
clamped = clamp(int(value), self.minimum, self.maximum)
if self.current.value != clamped:
self.current.value = clamped