Archived:Displaying a thumbnail gallery using PySymbian

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Aquivado: 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

Created: cyke64 (31 Mar 2007)

Last edited: hamishwillee (08 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()