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Sparkline: From PIL To S60
py_s60 1.1.3 has its drawing API very similar to PIL.
Porting from PIL to S60 is very easy. Here's an example
that I port a sparkline drawing function from
Joe Gregorio's article at xml.com
# modified from Joe Gregorio's article at
# http://www.xml.com/pub/a/2005/06/22/sparklines.html
from appuifw import *
import e32
lock = e32.Ao_lock()
c = Canvas()
app.body = c
draw = c._draw
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, \
14,0,0,26,8,6,6,24,52,66,36,6,10,14,30]
plot_sparkline(results, 3, 30, min_m=1, max_m=1, last_m=1)
app.exit_key_handler = lock.signal
lock.wait()
