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Untitled_130.py
import ui,ctypes,string
from objc_util import *
UIFont=ObjCClass('UIFont')
CAKeyframeAnimation=ObjCClass('CAKeyframeAnimation')
import sys
c.CTFontCreatePathForGlyph.restype = c_void_p
c.CTFontCreatePathForGlyph.argtypes = [c_void_p, c_void_p, c_void_p]
createPath=c.CTFontCreatePathForGlyph
glyphs_list=[]
class PathAnimation(object):
def __init__(self,pathList):
a=CAKeyframeAnimation.animationWithKeyPath_('path')
a.values=ns([p.CGPath() for p in pathList])
a.duration=len(pathList)
a.removedOnCompletion=False
self.animation=a
self._len=len(pathList)
@on_main_thread
def copyToLayer(self,layer):
'''Given a CAShapeLayer, add animation'''
layer.timeOffset=0
layer.speed=0
layer.addAnimation(self.animation, forKey='a')
def __len__(self):
return self._len
'''
set to false for funny alternative'''
usePredefined=True
if usePredefined:
sys.path.append('vfont/VariableFonts')
from variableTools import glyphsListConstruct
g=glyphsListConstruct()
for G in g[0::20]:
glyphs_list.append(ObjCInstance(G))
else:
glyphs_list=[]
for w in [-1, -0.5, 0., 0.5, 1]:
f=UIFont.systemFontOfSize_weight_(512,w)
glph=f.glyphWithName_('O')
glyphs_list.append(UIBezierPath.bezierPathWithCGPath_(ObjCInstance(createPath(f,glph,None))))
a=PathAnimation(glyphs_list)
def _get_CGColor(color):
"""Get a CGColor from a wide range of formats."""
return UIColor.colorWithRed_green_blue_alpha_(
*ui.parse_color(color)
).CGColor()
class AniPathView(ui.View):
'''animates a path based on touch'''
def __init__(self, pathList, color="#21abed",
line_width=1, line_color="#0f210f",
*args, **kwargs):
super().__init__(self, *args, **kwargs)
self.bg_color='white'
# Draw the full path on one layer
self._layer = ObjCClass("CAShapeLayer").new()
self._layer.setStrokeColor_(_get_CGColor(line_color))
self._layer.setFillColor_(_get_CGColor(color))
self._layer.setLineWidth_(line_width)
self.setup_layer()
a.copyToLayer(self._layer)
def setup_layer(self):
ObjCInstance(self).layer().addSublayer_(self._layer)
b=ObjCInstance(self).layer().bounds()
b.size.height-=44
b.origin.y=44
self._layer.frame=b
def curpath(self):
'''get current path, interpolated'''
try:
self._layer.presentationLayer().path()
except AttributeError:
return self._path
def touch_began(self,touch):
i=(5+touch.location.x)/(self.width-10)*len(glyphs_list)
if i<0:
i=0
if i>len(glyphs_list):
i=len(glyphs_list)
self._layer.timeOffset=i
self.name=str(i)
@on_main_thread
def touch_moved(self,touch):
i=(5+touch.location.x)/(self.width-10)*len(glyphs_list)
if i<0:
i=0
if i>len(glyphs_list):
i=len(glyphs_list)
self._layer.timeOffset=i
self.name=str(i)
pv=AniPathView(glyphs_list)
pv.present()
#pv.setupani(0)
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