customslider.py

customslider.py

import ui

class CustomSlider(ui.View):
    def __init__(self,*args,**kwargs):
        super().__init__(*args, **kwargs)

    @property
    def value(self):
        return self.__value
        
    @value.setter
    def value(self, val):
        if val < 0:
            self.__value = val = 0
        elif val > 1.0:
            self.__value = val = 1.0
        else:
            self.__value = val
        self.pos = self.width*val
        self.set_needs_display()
        
    @property
    def action(self):
        return self.__action
        
    @action.setter
    def action(self, act):
        self.__action = act
        
    def draw(self):
        ui.set_color((.5,.5,.5,1.0))
        self.path = ui.Path()
        self.path.move_to(0, self.height/2.0+self.height/8)
        self.path.line_to(self.width, self.height/2+self.height/8)
        self.path.stroke()
        self.path = ui.Path()
        ui.set_color((0,0,1,1))
        self.path.move_to(0, self.height/2.0+self.height/8)
        self.path.line_to(self.pos, self.height/2+self.height/8)
        self.path.stroke()
        self.path = ui.Path.oval(self.pos, self.height/2.0,
            self.height/4.0, self.height/4.0)
        ui.set_color((.5,.5,.5,1.0))
        self.path.fill()
        self.value = self.pos/self.width
        if self.action:
            self.action(self)
                       
    def touch_began(self, touch):
        self.pos = touch.location.x
        
    def touch_moved(self, touch):
        delta = (touch.location.x - self.pos)
        if abs(delta) > 5.0:
            self.pos += delta
        self.set_needs_display()
        
    def touch_ended(self, touch):
        self.set_needs_display()
        
if __name__ == '__main__':
    v = ui.load_view()
    v.height = 500
    v.width = 500
    def update_label(sender):
        sender.superview['label1'].text=str(sender.value)
    v['view1'].action = update_label
    v['view1'].value = .5
    v.present('sheet')
               

customslider.pyui

[
  {
    "class" : "View",
    "attributes" : {
      "background_color" : "RGBA(1.000000,1.000000,1.000000,1.000000)",
      "tint_color" : "RGBA(0.000000,0.478000,1.000000,1.000000)",
      "enabled" : true,
      "border_color" : "RGBA(0.000000,0.000000,0.000000,1.000000)",
      "flex" : ""
    },
    "frame" : "{{0, 0}, {493, 363}}",
    "selected" : false,
    "nodes" : [
      {
        "class" : "View",
        "attributes" : {
          "class" : "View",
          "name" : "view1",
          "uuid" : "873644B6-2A2E-4C33-B4AF-C8D8DD35D576",
          "frame" : "{{153, 53}, {100, 100}}",
          "custom_class" : "CustomSlider"
        },
        "frame" : "{{50, 50}, {400, 100}}",
        "selected" : false,
        "nodes" : [

        ]
      },
      {
        "class" : "Label",
        "attributes" : {
          "font_size" : 18,
          "text" : "0.5",
          "font_name" : "<System>",
          "name" : "label1",
          "class" : "Label",
          "alignment" : "center",
          "frame" : "{{128, 169}, {150, 32}}",
          "uuid" : "69ECF698-7671-42F9-AB70-2E654312FE67"
        },
        "frame" : "{{50, 200}, {400, 50}}",
        "selected" : true,
        "nodes" : [

        ]
      }
    ]
  }
]

        if val < 0:
            self.__value = val = 0
        elif val > 1.0:
            self.__value = val = 1.0
        else:
            self.__value = val
# —>
        self.__value = val = max(0, min(val, 1.0))