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Archived:Displaying a thumbnail gallery 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}}.

All PySymbian articles have been archived. PySymbian is no longer maintained by Nokia and is not guaranteed to work on more recent Symbian devices.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: cyke64 (31 Mar 2007)
Last edited: hamishwillee (31 May 2013)

This code displays the thumbnails gallery

First version

from appuifw import *
from graphics import Image
from key_codes import *
#from status import *
#from e32db import format_time
import os, e32
 
dir = u'C:\\Nokia\\Images\\_PAlbTN\\'
os.chdir(dir)
fs = os.listdir('')
mtime = os.path.getmtime
# newest first
fs.sort(key=mtime, reverse=True)
 
app.body = canvas = Canvas()
# show just 16 images
for k in range(min(16, len(fs))):
j, i = divmod(k, 4)
im = Image.open(dir + fs[k])
canvas.blit(im, target=(2+44*i, 2+34*j))
canvas.rectangle([(0,0), (43,33)], 0xff, width=2) # selected
 
x, y, k = 0, 0, 0
def move(dx, dy):
global x, y, k
canvas.rectangle([(44*x,34*y), (44*x+43,34*y+33)], 0xffffff, width=2)
k = 4*y + x + 4*dy + dx
y, x = divmod(k, 4)
canvas.rectangle([(44*x,34*y), (44*x+43,34*y+33)], 0xff, width=2)
if 0 <= k < len(fs):
app.title = u''+fs[k]
#status_on(format_time(mtime(fs[k])))
 
# move cursor and open image
canvas.bind(EKeyUpArrow, lambda: move(0,-1))
canvas.bind(EKeyDownArrow, lambda: move(0,1))
canvas.bind(EKeyLeftArrow, lambda: move(-1,0))
canvas.bind(EKeyRightArrow,lambda: move(1,0))
canvas.bind(EKeySelect, lambda: Content_handler().open(dir[:-8]+fs[k]))
 
# standard code for non-loop app
lock = e32.Ao_lock()
app.exit_key_handler = lock.signal
lock.wait()

Second version

import appuifw
import e32
import graphics
import key_codes
import os
 
class FlickrS60Error(Exception): pass
 
class FlickrS60Thumb:
 
def __init__(self, path):
 
self.path = unicode(path)
self.listFile = []
self.ldivx = 0
self.ldivy = 0
self.lock = e32.Ao_lock()
self.canvas = None
self.img = graphics.Image.new((176, 144))
self.img_tmp = graphics.Image.new((42, 36))
self.x, self.y = 0, 0
self.p = 0
self.pages = 0
self.currpages = 0
self.mpath = 0
 
def OnRun(self):
 
appuifw.app.exit_key_handler = self.lock.signal
 
self._createList()
 
self.canvas = appuifw.Canvas(redraw_callback=self.OnUpdate)
appuifw.app.body = self.canvas
 
self.canvas.bind(key_codes.EKeyRightArrow, lambda: self.move(1, 0))
self.canvas.bind(key_codes.EKeyLeftArrow, lambda: self.move(-1, 0))
self.canvas.bind(key_codes.EKeyUpArrow, lambda: self.move(0, -1))
self.canvas.bind(key_codes.EKeyDownArrow, lambda: self.move(0, 1))
self.canvas.bind(key_codes.EKeySelect, self.IMG)
 
self._drawIMG()
 
self.lock.wait()
 
def OnUpdate(self, rect):
 
self.canvas.blit(self.img)
self.canvas.rectangle([(self.p+(42*self.x), 36*self.y), (self.p+(42*self.x)+42, (36*self.y)+36)], width=2, outline=0x123456)
 
def move(self, x, y):
 
self.x = (self.x+x)%4
self.y = (self.y+y)
 
if x == 1: self.p = (self.p+2)%8
if x == -1: self.p = (self.p-2)%8
 
if self.y == 4:
if self.currpages < self.pages-1:
self.y = 0
self.currpages += 1
self._drawIMG(start=self.currpages)
else:
self.y = 3
 
if self.y == -1:
if self.currpages > 0:
self.y = 3
self.currpages -= 1
self._drawIMG(start=self.currpages)
else:
self.y = 0
 
self.mpath = (4*self.y + self.x)+(16*self.currpages)
 
self.OnUpdate(None)
 
def IMG(self):
 
try:
m = self.listFile[self.mpath].replace('_PalbTN\\', '')
appuifw.Content_handler().open(m)
except:
pass
 
def _drawIMG(self, start=0):
 
self.img.clear(0xffffff)
z = 0
 
for id in range(start*16, (start+1)*16):
j, i = divmod(id-(start*16), 4)
try:
self.img_tmp.load(self.listFile[id])
self.img.blit(self.img_tmp, target=(z+(42*i)+(z+1), 36*j))
z = (z+1)%4
except:
break
 
self.OnUpdate(None)
 
def _createList(self):
 
try:
for id in os.listdir(self.path):
self.listFile.append(self.path + id)
 
self.ldivx, self.ldivy = divmod(len(self.listFile), 16)
 
self.pages = self.ldivx
if self.ldivy <> 0: self.pages += 1
except:
raise FlickrS60Error('Error in the list creation.')
 
if __name__ == '__main__':
 
FlickrS60Thumb('E:\\Images\\_PalbTN\\').OnRun()
This page was last modified on 31 May 2013, at 04:07.
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