# incr_slider_demo.py

# incr_slider_demo.py

from appuifw import *
import e32,audio,appuifw,os,sys,key_codes,time,math,random,graphics,sensor,copy
from graphics import *

# define colour constants
RGB_RED = (255, 0, 0)
RGB_GREEN = (0, 255, 0)
RGB_BLUE = (0, 0, 255)
RGB_BLACK = (0,0,0)
RGB_WHITE = (255,255,255)
RGB_GREY = (128,128,128)

def draw(rect):
    if img:
        canvas.blit(img)

rainbow=[]
def z(r,g,b):
    rainbow.append((r,g,b))
r,g,b=255,0,0
for g in range(256):
    z(r,g,b)
for r in range(254, -1, -1):
    z(r,g,b)
for b in range(256):
    z(r,g,b)
for g in range(254, -1, -1):
    z(r,g,b)
for r in range(256):
    z(r,g,b)
for b in range(254, -1, -1):
    z(r,g,b)
max_rgb=len(rainbow)-1

running = 1
def quit():
    global running
    timer.cancel()
    running = 0
app.exit_key_handler = quit


def e_callback(event):
    global pixel,timer,ss,yo,t
    try:
        pixel = event['pos']
    except : print 'err'
    try: timer.cancel()
    except: pass
    timer.after(1,zero)
    try:
        if t < time.time():
            yo=increment[int(pixel[1]*sVy)]
            ss+=yo
    except:
        yo=increment[int(pixel[1]*sVy)]
        ss+=yo

img=None
app.screen = 'large'
app.orientation = 'portrait'
app.directional_pad = False
app.body = canvas = Canvas(redraw_callback=draw, event_callback=e_callback) #
buf = Image.new(canvas.size)
res_x, res_y = canvas.size

timer = e32.Ao_timer()

#obtaining canvas size (Total_x and Total_y)
res_x, res_y = 360,576
sVy = 9.0/res_y

increment=[100,50,10,1,0,-1,-10,-50,-100]

buf.clear(RGB_GREY)
BorW=[RGB_WHITE,RGB_BLACK]
yy2=res_y/9
for ssVyy in xrange(0,9):
    yy=yy2*ssVyy+2
    WvB=BorW[0]
    BorW[0],BorW[1]=BorW[1],BorW[0]
    buf.rectangle(((350,yy), (358,yy+yy2)), fill=WvB)
    img=copy.copy(buf)
    draw(())
#

buf.text((10,44), u"Color:", fill = RGB_BLACK,font=(u'Nokia Hindi S60',40,STYLE_BOLD))
ss=max_rgb
pixel=None
yo=0
prev_ss=None
tt=''

def zero():
    global yo
    yo=0

def layout():
    global yo
    yo=0

while running:
    if ss < 0: ss += max_rgb
    if ss > max_rgb: ss -= max_rgb
    if yo <> None:
        buf.text((10,90), unicode(tt), fill = RGB_GREY,font=(u'Nokia Hindi S60',30,STYLE_BOLD))
        tt=str(rainbow[ss])+' : '+str(yo)
        buf.rectangle(((120,2), (348,50)), fill=rainbow[ss])
        buf.text((10,90), unicode(tt), fill = RGB_BLACK,font=(u'Nokia Hindi S60',30,STYLE_BOLD))
        img=copy.copy(buf)
        if yo <> 0:
            t=time.time()+0.3
        draw(())
    yo=None
    e32.ao_yield()
#