[announce] full screen dot amtrix scroller

[xchip]

Enjoy! BTW I'm loking forward to hearing your improvements :-)

[CODE]
#!/usr/bin/env python

# Very simple scroller
# (C)2006 Raul Aguaviva <raul_aguaviva@yahoo.es>

# right/left chnge teh size of the font
# up/down changes the speed

import appuifw
from graphics import *
import e32
from key_codes import *


msg = appuifw.query(u'Enter message to scroll', 'text',u'HELLO WORLD ').upper()

class Keyboard(object):
def __init__(self,onevent=lambda:None):
self._keyboard_state={}
self._downs={}
self._onevent=onevent
def handle_event(self,event):
if event['type'] == appuifw.EEventKeyDown:
code=event['scancode']
if not self.is_down(code):
self._downs[code]=self._downs.get(code,0)+1
self._keyboard_state

=1
        elif event['type'] == appuifw.EEventKeyUp:
            self._keyboard_state[event['scancode']]=0
        self._onevent()
    def is_down(self,scancode):
        return self._keyboard_state.get(scancode,0)
    def pressed(self,scancode):
        if self._downs.get(scancode,0):
            self._downs[scancode]-=1
            return True
        return False
keyboard=Keyboard()

appuifw.app.screen='full'
img=Image.new((176,208))    
 
 
canvas=appuifw.Canvas(event_callback=keyboard.handle_event)
appuifw.app.body=canvas

# dot matrix font only capital letters [A...Z]
font = []
font += [0x83, 0xED, 0xEE, 0xED, 0x83, 0xff]			
font += [0xBE, 0x80, 0xB6, 0xB6, 0xC9, 0xff]  	
font += [0xC1, 0xBE, 0xBE, 0xBE, 0xDD, 0xff] 
font += [0xBE, 0x80, 0xBE, 0xBE, 0xC1, 0xff]  
font += [0x80, 0xB6, 0xB6, 0xB6, 0xBE, 0xff]
font += [0x80, 0xF6, 0xF6, 0xF6, 0xFE, 0xff] 
font += [0xC1, 0xBE, 0xBE, 0xB6, 0x86, 0xff]
font += [0x80, 0xF7, 0xF7, 0xF7, 0x80, 0xff] 
font += [0xff, 0xbE, 0x80, 0xBe, 0xff, 0xff]   
font += [0xdF, 0xBf, 0xBf, 0xBf, 0xC0, 0xff]  
font += [0x80, 0xf7, 0xeB, 0xDD, 0xbE, 0xff] 
font += [0x80, 0xbF, 0xbF, 0xbF, 0xbF, 0xff]   
font += [0x80, 0xfD, 0xf3, 0xfD, 0x80, 0xff]
font += [0x80, 0xfB, 0xf7, 0xeF, 0x80, 0xff] 
font += [0xc1, 0xbE, 0xbE, 0xbE, 0xc1, 0xff] 
font += [0x80, 0xf6, 0xf6, 0xf6, 0xf9, 0xff] 
font += [0xc1, 0xbE, 0xaE, 0xdE, 0xa1, 0xff]  
font += [0x80, 0xf6, 0xe6, 0xd6, 0xb9, 0xff] 
font += [0xd9, 0xb6, 0xb6, 0xb6, 0xcD, 0xff]
font += [0xfE, 0xfE, 0x80, 0xfE, 0xfE, 0xff]   
font += [0xc0, 0xbF, 0xbF, 0xbF, 0xc0, 0xff]  
font += [0xf8, 0xe7, 0x9F, 0xe7, 0xf8, 0xff] 
font += [0xc0, 0xbF, 0xc7, 0xbF, 0xc0, 0xff]  
font += [0x9C, 0xeB, 0xf7, 0xeB, 0x9c, 0xff] 
font += [0xfC, 0xfB, 0x87, 0xfB, 0xfC, 0xff] 
font += [0x9E, 0xaE, 0xb6, 0xbA, 0xbC, 0xff] 


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


blobsize=10
fx = 1
fd = 1
il = 0

import time
start_time=time.clock()
n_frames=0
delay = 0
canvas.clear(0)

y = 0
x = 0

while running:

    #take character
    c = ord(msg[(il/6)])  #take character
    if c == 32:
        r = 0xff
    else:
        r = font[(c-65)*6 + (il%6)]
    il += 1    
    if il>=len(msg)*6:
      il = 0

    x = (176-(7*blobsize))/2
    p = 1
    for j in range(0,7):
        if ((r & p) == 0):
            canvas.rectangle((x,y,x+blobsize,y+blobsize), fill = 0xff0000)
        else:
            canvas.rectangle((x,y,x+blobsize,y+blobsize), fill = 0x000000)
        p = p * 2
        x = x + blobsize

    # scroll the text
    img = screenshot()
    e32.ao_yield()
    e32.ao_sleep(delay)
    canvas.blit(img,target=(0,blobsize))
        

    #right left change the size of the text
    if keyboard.is_down(EScancodeLeftArrow):  
        canvas.rectangle((0,0,176,blobsize), fill = 0x000000)
        blobsize -= 1
        if blobsize<1:
            blobsize = 1
        
    if keyboard.is_down(EScancodeRightArrow): 
        canvas.rectangle((0,0,176,blobsize), fill = 0x0000)
        blobsize += 1
        
    #up down change speed
    if keyboard.is_down(EScancodeDownArrow):  delay += .01
    if keyboard.is_down(EScancodeUpArrow):    
        delay -= .01
        if delay<0:
            delay = 0
            
    if keyboard.pressed(EScancodeHash):
        filename=u'e:\\screenshot.png'
        canvas.text((0,32),u'Saving screenshot to:',fill=0xffff00)
        canvas.text((0,48),filename,fill=0xffff00)
        img.save(filename)

    n_frames+=1
end_time=time.clock()
total=end_time-start_time

print "%d frames\n %f seconds\n %f FPS\n %f ms/frame.\n"%(n_frames,total,
                                                     n_frames/total,
                                                     total/n_frames*1000.)

[cyke64]

Enjoy! BTW I'm loking forward to hearing your improvements :-)


[/CODE]

Cool
On my Nokia 6600 stats are 0.077 FPS
Could you add some modifications ?
- choose scrolling direction (right to left,left to right , up to down , down to up)
- choose color or use more colors
- change setting during scrolling

OK I found size changing feature but I found a bug
When you lower font character size screen is frozen !
I push right arrow to make characters bigger and screen scroll again but size changing is not smooth and behavior is weird (size is not correct ! ) It's difficult to have very little characters !

[xchip]

Cool
On my Nokia 6600 stats are 0.077 FPS

I fixed the fps counter, I got 30 FPS on my 6610

Could you add some modifications ?
- choose scrolling direction (right to left,left to right , up to down , down to up)

oops that is going to be tricky, it woudl be easy to add if all the font had the same size, I'lll look into that though

- choose color or use more colors
- change setting during scrolling

yup, I need to learn how the UI works to add more effects

OK I found size changing feature but I found a bug
When you lower font character size screen is frozen !
I push right arrow to make characters bigger and screen scroll again but size changing is not smooth and behavior is weird (size is not correct ! ) It's difficult to have very little characters !

I fixed the frozen characteres, but I didn't see incorrect size problem

Cool! thanks for testing!

[cyke64]

hey Raul ,

Update the link of your scroller app to you site (google pages)


http://aguaviva.googlepages.com/s60pythondevelopment
http://aguaviva.googlepages.com/scroller.zip

[xchip]

hey Raul ,

Update the link of your scroller app to you site (google pages)


http://aguaviva.googlepages.com/s60pythondevelopment
http://aguaviva.googlepages.com/scroller.zip

err what do you mean?? You wanted me to post the link to my page? :-)

[cyke64]

err what do you mean?? You wanted me to post the link to my page? :-)

Yes
It's better to have a permanent link to an explanation and also a file than copy/paste text to a file !

[eriksmartt]

Cool script! One suggestion though would be to determine the screen size at runtime instead of hardcoding 176x208. This will make the app more scalable for devices with different resolutions (like the E60/E80/N80/N90 and the QVGA phones.) On my N90 the text displays a bit smaller then I think you intended -- though I'm still having fun passing messages in meetings ;-)

[xchip]

Cool script! One suggestion though would be to determine the screen size at runtime instead of hardcoding 176x208. This will make the app more scalable for devices with different resolutions (like the E60/E80/N80/N90 and the QVGA phones.) On my N90 the text displays a bit smaller then I think you intended --

Yep, BTW did you try to change the hardcoded screen size? Was it still running at a decent speed? How many FPS did you get?

though I'm still having fun passing messages in meetings ;-)

hehehe :-) Just to hear this comment makes worth the effort of writing the script :-)