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Archived:How to create partly transparent object and text in 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}}.

All PySymbian articles have been archived. PySymbian is no longer maintained by Nokia and is not guaranteed to work on more recent Symbian devices. It is not possible to submit apps to Nokia Store.

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Created: gaba88 (01 Jul 2008)
Last edited: hamishwillee (31 May 2013)

The code below will help in creating transparent objects, texts and many more things in PySymbian.

import appuifw
import graphics
import e32
 
def quit():
global running
running = False
 
def handle_redraw(rect):
canvas.clear(0x009900)
canvas.polygon(((0, 0), (bw, 0), (0, bh)), outline = 0xFFFF00, fill = 0xFFFF00)
 
textimgsize = (320, 20)
textimg = graphics.Image.new(textimgsize, "L")
textimg.clear(0x000000)
colorimg = graphics.Image.new(textimgsize)
colorimg.clear(0xFFFFFF)
 
textmsg = u"75% transparent text"
fontspec = (None, None, graphics.FONT_BOLD)
 
tleft, ttop, tright, tbottom = textimg.measure_text(textmsg, fontspec)[0]
tw = (tright - tleft)
th = (tbottom - ttop)
 
alpha = 0xC0C0C0
textimg.text((-tleft, -ttop), textmsg, alpha, fontspec)
canvas.blit(colorimg, target = ((bw - tw) / 2, (bh - th) / 2), mask = textimg)
 
canvas = appuifw.Canvas()
appuifw.app.body = canvas
bw, bh = canvas.size
appuifw.app.exit_key_handler = quit
 
running = True
while running:
handle_redraw(None)
e32.ao_yield()
This page was last modified on 31 May 2013, at 04:03.
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