anchor_scrubber.py

from mojo.subscriber import Subscriber, registerGlyphEditorSubscriber, unregisterGlyphEditorSubscriber, listRegisteredSubscribers
from mojo.UI import inDarkMode

class anchor_scrubber(Subscriber):

    debug = False
    
    def build(self):
        
        editor = self.getGlyphEditor()
        foregroundLayer = editor.extensionContainer(
            identifier="com.scrubber.foreground",
            location='foreground',
            clear=True
        )
        self.pointInsertionLayer = foregroundLayer.appendBaseSublayer()

    glyphDidChangeAnchorsDelay = 0
    def glyphDidChangeAnchors(self, info):                
        glyph = info['glyph']
        delNames  = []
        ignore = []
        rev = list(glyph.anchors)
        rev.reverse()
        d = False
        for ar in rev:
            if ar.name in ignore:
                delNames.append(ar.name)
                glyph.removeAnchor(ar)
                rev.remove(ar)
                d = True
            else:
                ignore.append(ar.name)     
        if d:
            for anc in glyph.anchors:
                if anc.name in delNames:
                    anc.selected = False
                    color = anc.color or (1,0,0,1)
                    self.playPointAnimation(anc.position, 15, color)
        
                
    def playPointAnimation(self, location, size, color):
        x, y = location
        pathLayer = self.pointInsertionLayer.appendBaseSublayer(
            position=((x-size/2, y-size/2)),
            size=(size, size),
        )
        circle = pathLayer.appendOvalSublayer(
            size=(size, size),
            fillColor=None,
            strokeColor=color,
            strokeWidth=2,
            strokeCap="round")

        size *= 2.2
        with circle.propertyGroup(duration=1):
            circle.setStrokeWidth(1)
            circle.setSize((size,size))

        with pathLayer.propertyGroup(
                duration=1,
                animationFinishedCallback=self.removePointAnimation
            ):
            pathLayer.setOpacity(0)
            pathLayer.setPosition((x-size/2, y-size/2))
            

    def removePointAnimation(self, layer):
        self.pointInsertionLayer.removeSublayer(layer)




if __name__ == '__main__':
    registerGlyphEditorSubscriber(anchor_scrubber)