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Archived:How to plot sparklines using PySymbian

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Archived.pngAquivado: Este artigo foi arquivado, pois o conteúdo não é mais considerado relevante para se criar soluções comerciais atuais. Se você achar que este artigo ainda é importante, inclua o template {{ForArchiveReview|escreva a sua justificativa}}.

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Article Metadata
Tested with
Devices(s): Nokia N96
Platform(s): S60 2nd Edition, S60 3rd Edition
Keywords: graphics, canvas
Created: cyke64 (15 Mar 2007)
Last edited: hamishwillee (31 May 2013)



Python has its drawing API very similar to PIL. Porting from PIL to S60 is very easy. Here's an example for porting a sparkline drawing function from Joe Gregorio's article at


# import modules
from appuifw import *
import e32
lock = e32.Ao_lock() # declare exit lock
c = Canvas()
app.body = c
draw = c._draw
# define colors
red, green, blue, gray = 0xff0000, 0x00ff00, 0x0000ff, 0x777777
def plot_sparkline(results, step=2, height=20, \
min_m=None, max_m=None, last_m=None, \
min_color=blue, max_color=green, last_color=red):
coords = zip(range(1,len(results)*step+1, step), \
[height - 3 - y/(101.0/(height-4)) for y in results])
draw.line(coords, gray)
if min_m:
min_pt = coords[results.index(min(results))]
draw.rectangle([min_pt[0]-1, min_pt[1]-1, min_pt[0]+1, min_pt[1]+1], fill=min_color)
if max_m:
max_pt = coords[results.index(max(results))]
draw.rectangle([max_pt[0]-1, max_pt[1]-1, max_pt[0]+1, max_pt[1]+1], fill=max_color)
if last_m:
end = coords[-1]
draw.rectangle([end[0]-1, end[1]-1, end[0]+1, end[1]+1], fill=last_color)
results = [88,84,82,92,82,86,66,82,44,64,66,88,96,80,24,26, \
plot_sparkline(results, 3, 30, min_m=1, max_m=1, last_m=1)
app.exit_key_handler = lock.signal
lock.wait() # Wait for exit



Related Links

How to draw shapes on canvas

This page was last modified on 31 May 2013, at 01:09.
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