0f03e6529a
* Add default auto doc options * Ensure all references are unique * Use anonymous links to avoid duplicate references * Remove default options, fix wrong module name * Don’t index repeated class * Remove repeated classes included through automodule * Fix warnings * We don’t use our own static directory * Correctly format XML in docs * Fix indentation * Fix overline * Bring TOC to top * Fix definition list * Offset definition lists and examples * Fix erroneous markup * Fix markup * Already included in automodule * Fix args markup * Correct markup for example * Don’t reindex repeated module * Correct XML code block markup * Fix markup errors, change example to doctest * Correct list markup * Make ttx docstring both valid RST and valid help output * Various other boring markup fixes * Fix example indenting * Make docstring valid RST and valid help output * Mock import for reportlab * It’s ok if manual links don’t appear in toctrees * Oops typo, I guess doctests are useful
99 lines
2.7 KiB
Python
99 lines
2.7 KiB
Python
from fontTools.misc.arrayTools import updateBounds, pointInRect, unionRect
|
|
from fontTools.misc.bezierTools import calcCubicBounds, calcQuadraticBounds
|
|
from fontTools.pens.basePen import BasePen
|
|
|
|
|
|
__all__ = ["BoundsPen", "ControlBoundsPen"]
|
|
|
|
|
|
class ControlBoundsPen(BasePen):
|
|
|
|
"""Pen to calculate the "control bounds" of a shape. This is the
|
|
bounding box of all control points, so may be larger than the
|
|
actual bounding box if there are curves that don't have points
|
|
on their extremes.
|
|
|
|
When the shape has been drawn, the bounds are available as the
|
|
``bounds`` attribute of the pen object. It's a 4-tuple::
|
|
|
|
(xMin, yMin, xMax, yMax).
|
|
|
|
If ``ignoreSinglePoints`` is True, single points are ignored.
|
|
"""
|
|
|
|
def __init__(self, glyphSet, ignoreSinglePoints=False):
|
|
BasePen.__init__(self, glyphSet)
|
|
self.ignoreSinglePoints = ignoreSinglePoints
|
|
self.init()
|
|
|
|
def init(self):
|
|
self.bounds = None
|
|
self._start = None
|
|
|
|
def _moveTo(self, pt):
|
|
self._start = pt
|
|
if not self.ignoreSinglePoints:
|
|
self._addMoveTo()
|
|
|
|
def _addMoveTo(self):
|
|
if self._start is None:
|
|
return
|
|
bounds = self.bounds
|
|
if bounds:
|
|
self.bounds = updateBounds(bounds, self._start)
|
|
else:
|
|
x, y = self._start
|
|
self.bounds = (x, y, x, y)
|
|
self._start = None
|
|
|
|
def _lineTo(self, pt):
|
|
self._addMoveTo()
|
|
self.bounds = updateBounds(self.bounds, pt)
|
|
|
|
def _curveToOne(self, bcp1, bcp2, pt):
|
|
self._addMoveTo()
|
|
bounds = self.bounds
|
|
bounds = updateBounds(bounds, bcp1)
|
|
bounds = updateBounds(bounds, bcp2)
|
|
bounds = updateBounds(bounds, pt)
|
|
self.bounds = bounds
|
|
|
|
def _qCurveToOne(self, bcp, pt):
|
|
self._addMoveTo()
|
|
bounds = self.bounds
|
|
bounds = updateBounds(bounds, bcp)
|
|
bounds = updateBounds(bounds, pt)
|
|
self.bounds = bounds
|
|
|
|
|
|
class BoundsPen(ControlBoundsPen):
|
|
|
|
"""Pen to calculate the bounds of a shape. It calculates the
|
|
correct bounds even when the shape contains curves that don't
|
|
have points on their extremes. This is somewhat slower to compute
|
|
than the "control bounds".
|
|
|
|
When the shape has been drawn, the bounds are available as the
|
|
``bounds`` attribute of the pen object. It's a 4-tuple::
|
|
|
|
(xMin, yMin, xMax, yMax)
|
|
"""
|
|
|
|
def _curveToOne(self, bcp1, bcp2, pt):
|
|
self._addMoveTo()
|
|
bounds = self.bounds
|
|
bounds = updateBounds(bounds, pt)
|
|
if not pointInRect(bcp1, bounds) or not pointInRect(bcp2, bounds):
|
|
bounds = unionRect(bounds, calcCubicBounds(
|
|
self._getCurrentPoint(), bcp1, bcp2, pt))
|
|
self.bounds = bounds
|
|
|
|
def _qCurveToOne(self, bcp, pt):
|
|
self._addMoveTo()
|
|
bounds = self.bounds
|
|
bounds = updateBounds(bounds, pt)
|
|
if not pointInRect(bcp, bounds):
|
|
bounds = unionRect(bounds, calcQuadraticBounds(
|
|
self._getCurrentPoint(), bcp, pt))
|
|
self.bounds = bounds
|