def start(self, thumbnails):
logging.debug('Starting carrousel of thumbnails in thread {0}...'.format(threading.current_thread().ident))
logging.debug('Carrousel of thumbnails count {0}'.format(len(thumbnails)))
self.thumbnails = thumbnails
self.thumbnailsIterator = ThumbnailsIterator(self.thumbnails)
self.rotate()
class ThumbnailsCarrouselFrame(tk.Frame):
def __init__(self, parent, size, *args, **kwargs):
tk.Frame.__init__(self, parent, *args, **kwargs)
self.parent = parent
self.size = size
self.fontFamily = 'System'
self.config(bg='black', bd=0)
self.emptyIcon = ImageTk.PhotoImage(file='resources/empty16x16.png')
self.emptyThumbnail = ImageTk.PhotoImage(file='resources/empty60x60.png')
self.createWidgets()
self.initialize()
def createWidgets(self):
labelFont = tkFont.Font(family=self.fontFamily, size=9)
self.thumbnailsLabels = []
self.iconsLabels = []
self.descLabels = []
for i in xrange(self.size):
f = tk.Frame(self, bg='black', bd=0, padx=10)
self.iconsLabels.append(tk.Label(f, bd=0, bg='white'))
self.descLabels.append(tk.Label(f, bd=0, bg='white', fg='black', font=labelFont))
self.thumbnailsLabels.append(tk.Label(f, bd=0))
f.grid(row=0, column=i)
def initialize(self):
self.iconsTkImages = [None] * self.size
self.thumbnailsTkImages = [None] * self.size
self.descriptions = [None] * self.size
self.rotateHandler = -1
self.workerThread = None
map((lambda l: l.config(text='')), self.descLabels)
def start(self, thumbnails):
logging.debug('Starting carrousel of thumbnails in thread {0}...'.format(threading.current_thread().ident))
logging.debug('Carrousel of thumbnails count {0}'.format(len(thumbnails)))
self.thumbnails = thumbnails
self.thumbnailsIterator = ThumbnailsIterator(self.thumbnails)
self.rotate()
def stop(self):
if self.isWorkingInBackground():
self.workerThread.join()
self.after_cancel(self.rotateHandler)
self.initialize()
def rotate(self):
if self.isWorkingInBackground():
self.workerThread.join()
logging.debug('Rotating thumbnails in thread {0}...'.format(threading.current_thread().ident))
self.thumbnailsTkImages.pop(0)
self.thumbnailsTkImages.append(None)
self.iconsTkImages.pop(0)
self.iconsTkImages.append(None)
self.descriptions.pop(0)
self.descriptions.append('')
for i in xrange(0, self.size - 2):
self.showThumbnail(i)
self.workerThread = threading.Thread(target=self.displayNextThumbnail)
self.workerThread.start()
# For windows, to avoid using threads
# self.displayNextThumbnail()
def isWorkingInBackground(self):
return self.workerThread is not None and self.workerThread.is_alive()
def displayNextThumbnail(self):
logging.debug('Displaying netxt thumbnail in thread {0}...'.format(threading.current_thread().ident))
if self.thumbnailsIterator.hasNext():
icon, description, image = self.thumbnailsIterator.next()
lastIndex = self.size - 1
self.iconsTkImages[lastIndex] = ImageTk.PhotoImage(icon) if icon is not None else self.emptyIcon
self.descriptions[lastIndex] = self.extractDisplayDescription(description)
self.thumbnailsTkImages[lastIndex] = ImageTk.PhotoImage(image) if image is not None else self.emptyThumbnail
self.showThumbnail(lastIndex)
self.rotateHandler = self.after(CARROUSEL_ROTATION_DELAY, self.rotate)
def extractDisplayDescription(self, description):
if description is None:
return ''
sp = description.split('-')
if len(sp) > 1:
return sp[1].strip()
else:
return description
def showThumbnail(self, i):
try:
iconLabel = self.iconsLabels[i]
iconLabel.configure(image=self.iconsTkImages[i])
iconLabel.grid(row=0, column=0)
descLabel = self.descLabels[i]
descLabel.configure(text=self.descriptions[i])
descLabel.grid(row=0, column=1)
thumbLabel = self.thumbnailsLabels[i]
thumbLabel.configure(image=self.thumbnailsTkImages[i])
thumbLabel.grid(row=1, column=0, columnspan=2)
except:
pass
