Custom view drawing

v0.1

# coding: utf-8

import ui
from console import hud_alert

import ui

class MyView (ui.View):
    def __init__(self):
        # This will also be called without arguments when the view is loaded from a UI file.
        # You don't have to call super. Note that this is called *before* the attributes
        # defined in the UI file are set. Implement `did_load` to customize a view after
        # it's been fully loaded from a UI file.
        iv = ui.ImageView(frame=self.bounds)
        pass

    def did_load(self):
        # This will be called when a view has been fully loaded from a UI file.
        pass

    def will_close(self):
        # This will be called when a presented view is about to be dismissed.
        # You might want to save data here.
        pass

    def draw(self):
        # This will be called whenever the view's content needs to be drawn.
        # You can use any of the ui module's drawing functions here to render
        # content into the view's visible rectangle.
        # Do not call this method directly, instead, if you need your view
        # to redraw its content, call set_needs_display().
        # Example:
        if self.path:
        	self.path.stroke()
       # path = ui.Path.oval(0, 0, self.width, self.height)
       # ui.set_color('red')
       # path.fill()
        #img = ui.Image.named('ionicons-beaker-256')
        #img.draw(0, 0, self.width, self.height)
				
				
    def layout(self):
        # This will be called when a view is resized. You should typically set the
        # frames of the view's subviews here, if your layout requirements cannot
        # be fulfilled with the standard auto-resizing (flex) attribute.
        pass

    def touch_began(self, touch):
        # Called when a touch begins.
        x,y = touch.location
        print x
        path = ui.Path.oval(x, y, 20, self.height)
        ui.set_color('red')
        path.stroke()
#        v.set_needs_display()

    def touch_moved(self, touch):
        # Called when a touch moves.
        x,y = touch.location
        
        #Runs from 0 - 380
        #0 - 126 --> green
        #127 - 252 --> yellow
        #253 - 380 --> red
        
        print x
        if x < 191:
        	self.background_color = ((2*x/380),1,0,1)
        else:
        	self.background_color = (1,1-(2*(x-190)/380),0,1)
        
    def touch_ended(self, touch):
        # Called when a touch ends.
        x, y = touch.location
        
        with ui.ImageContext(100,300) as ctx:
        	ov = ui.Path.oval(x, y, 20, 40)
        	ui.set_color('black')
        	ov.fill()
        	img = ctx.get_image()
        	img.draw(x, y)

    def keyboard_frame_will_change(self, frame):
        # Called when the on-screen keyboard appears/disappears
        # Note: The frame is in screen coordinates.
        pass

    def keyboard_frame_did_change(self, frame):
        # Called when the on-screen keyboard appears/disappears
        # Note: The frame is in screen coordinates.
        pass
        

v = ui.load_view('behave')
v.present('sheet')

The line v = ui.load_view('behave') raises an error because there is no .pyui file.

This does not load your .pyui file but it should at least get you started...

# coding: utf-8

import ui

class MyView (ui.View):
    def __init__(self):
        self.iv = ui.ImageView(frame=self.bounds)
        self.path = None

    def draw(self):
        if self.path:
            self.path.stroke()

    def touch_began(self, touch):
        # Called when a touch begins.
        x,y = touch.location
        print('Begin:', x, y)
        self.path = ui.Path.oval(x, y, 20, self.iv.height)
        ui.set_color('red')
        self.path.stroke()
#        v.set_needs_display()

    def touch_moved(self, touch):
        # Called when a touch moves.
        x,y = touch.location

        #Runs from 0 - 380  # Where does 380 come from?
        #0 - 126 --> green
        #127 - 252 --> yellow
        #253 - 380 --> red

        print('Moved:', x, y)
        self.background_color = ((2*x/380),1,0,1) if x < 191 else (1,1-(2*(x-190)/380),0,1)

    def touch_ended(self, touch):
        # Called when a touch ends.
        x, y = touch.location

        with ui.ImageContext(100,300) as ctx:
            ov = ui.Path.oval(x, y, 20, 40)
            ui.set_color('black')
            ov.fill()
            img = ctx.get_image()
            img.draw(x, y)

#v = ui.load_view('behave')
v = MyView()
v.present('sheet')