Created
April 1, 2017 17:48
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Untitled_130.py
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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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