# Pull down to refresh.
# By Shambhala, for Pythonista

from scene import *
import sound

class MyScene (Scene):
	def setup(self):
		self.sw, self.sh = self.size.w, self.size.h
		self.ssh = self.sh # Top of page.
		self.tch = self.sh
		self.rise = False
		
		self.DIST = 0 # Distance, in pixels, that the user has pulled down the page.
		self.ref = 30 # Distance to refresh.
		self.maxD = 50 # Maximum distance.
		self.RiseSpeed = 10 # Speed the page rises.
	
	def draw(self):
		# Background color, behind the page:
		background(0, 0, 0)
		
		# When you let go, raise the page:
		if self.rise:
			self.ssh+=self.RiseSpeed
		if self.ssh>self.sh:
			self.rise = False
			self.ssh = self.sh
		
		# Adjust variables:
		self.DIST = self.sh - self.ssh
		
		# Draw above/behind the page:
		tint(1, 1, 1)
		if self.DIST >= self.ref:
			text('Release to refresh.','Helvetica',26,self.sw/2.0,self.sh-2,2)
		else:
			text('Pull down to refresh...','Helvetica',26,self.sw/2.0,self.sh-2,2)
			
		# Draw the page content here:
		fill(0.2, 0.2, 0.2)
		rect(0, 0, self.sw ,self.ssh) #Background
		text('Distance: ' + str(self.DIST), 'Arial', 20, 50, 50, 9)
	
	def touch_began(self, touch):
		self.rise = False
		self.tch = touch.location.y
	
	def touch_moved(self, touch):
		mk = self.tch - touch.location.y
		self.tch = touch.location.y
		self.ssh -= mk
		if self.ssh < self.sh - self.maxD:
			self.ssh = self.sh - self.maxD

	def touch_ended(self, touch):
		if self.ssh>self.sh: self.ssh=self.sh
		if self.DIST >= self.ref:
			self.refreshPage()
		else:
			self.rise = True
			print 'ni'
	
	def refreshPage(self):
		# When the user pulls, run this code.
		sound.play_effect('Click_1',3,3)
		# When it's done, raise the page:
		self.rise = True

run(MyScene())



# Track how far your finger moves.
# 	Move the page the same amount that your finger moves.
# 	Don't let the page go too low.
# When the user pulls it down enough, tell them they can release to refresh the page. 
# Once the player releases:
# 	If the page is pulled down far enough, run the refreshPage() function.
# 	Otherwise, just bring the page back to normal height.