2010/04/04

Flickr Random Image Picker

P6216480
Annecy.France

It's a small tool written to randomly show my photos from flickr. I quite enjoy viewing photos in this way. It helped me to discover photos that I didn't notice before. However, there are some limitations to it:
1. in current configuration, 10 photos will be shown every time I launch it. it takes too much time to do so. I have to wait for tens of seconds or even longer.
2. in GUI version, no thread is implemented, so the UI is blocked after the button is pressed.

To make it better, I did some minor changes:
1. create a thread for fetching photos from flickr, and use wx events to post event to htmlwindow. Don't know how to use lock or mutex under python yet, though...
import threading
from time import sleep

(FetchDoneEvent, EVT_FETCH_DONE) = wx.lib.newevent.NewEvent()

class FetchThread(threading.Thread):
def __init__(self,w):
threading.Thread.__init__(self)
# windows for posting events
self.w = w

def run (self):
fi = None
for x in range(10):
print x
if fi == None:
(content,fi) = fetch_photo()
else:
content = fetch_photo(fi)

evt = FetchDoneEvent(source=content)
while (self.w.loading):
sleep(0.5)
wx.PostEvent(self.w, evt)

class MyHtmlWindow(html.HtmlWindow):
def __init__(self, parent, id ):
html.HtmlWindow.__init__(self, parent, id, style=wx.NO_FULL_REPAINT_ON_RESIZE)
self.Bind(EVT_FETCH_DONE, self.OnFetchDone)
self.loading = 0

def OnLinkClicked(self, linkinfo):
import os
os.startfile(linkinfo.GetHref())

def OnFetchDone(self, e):
#self.LoadPage("myflickr.html")
self.loading = 1
if self.start_fetching != 1:
self.AppendToPage(e.source)
else:
self.SetPage(e.source)
self.start_fetching = 0
self.loading = 0

class SimpleFrame(wx.Frame):

def __init__(self, *args, **kwargs):
...

def OnButtonClicked(self,e):
FetchThread(w=self.html).start()
self.html.SetPage("

Fetching......

")
self.html.start_fetching = 1
2. add a function to only return a photo info at a time, instead of returning a html file with 10 photo infos.
def fetch_photo(fi=None):
print 'fetch_photo'
if fi == None:
fi = FlickrIndex(API_KEY, SECRET_KEY, MY_USER_ID)
return fi.print_random_photos(10),fi
else:
return fi.print_random_photos(10)

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騎士團長殺人事件 --村上春樹

今年的日文小說看完了。篇幅很長,但規模不大,故事都繞著幾個主要的人物。情節裡有些超現實的場景,但最後卻讓人有點意猶未盡,因為有些想搞懂的疑點,在還沒講清之前就結束了。