problem understanding pygtk
Samuele Giovanni Tonon
tonon at students.cs.unibo.it
Thu Oct 28 14:23:40 EDT 2004
hi,
i'm trying to develop a trivial application which random copy files
from a directory to another one.
i made it using pygtk for the graphical interface, however i find
some problem with progressbar and ListStore:
basically i need to make pulse the progressbar while i'm copying files
and write filenames copied on the ListStore on to the window.
However while copying the window is frozen, even if files are copied
one by one and when the copy process finish the window is updated
suddenly.
This behaviour is well shown if i try to copy files to slow devices
such as usb disk.
Looking to example in pygtk i though one way to solve this problem
was using gtk.timeouts or using thread , but none of them seems
to work.
Any hints ? The code is attached here, hoping someone can help me
Thanks
Samuele
----
#!/usr/bin/python
import pygtk
pygtk.require('2.0')
import gtk
import gobject
import os
import time
import sys
import random
import shutil
def progress_timeout(pbobj):
if pbobj.transfermode == 1:
pbobj.progbar.pulse()
return gtk.TRUE
def copy_file(pbobj):
if pbobj.copying == 0 and pbobj.transfermode == 1:
pbobj.copying = 1
for f in pbobj.cplist:
shutil.copy2(f,pbobj.dstdir)
pbobj.model.append([f])
pbobj.cplist=[]
pbobj.statusbar.push(pbobj.statbarCID, "Transfer Done")
pbobj.transfermode = 0
pbobj.copying = 0
return gtk.TRUE
class RanFiles:
def listfiles(self):
if len(self.model) >= 1:
self.model.clear()
self.fileslist = []
for root, dirs, files in os.walk(self.pathname):
for f in files:
self.fileslist.append(root + '/' + f)
def enter_callback(self, widget, entry):
self.dstdir = self.txtentry.get_text()
def src_callback(self, widget, entry):
self.pathname = self.txtentry0.get_text()
def delete_event(self, widget, event, data=None):
return gtk.FALSE
def destroy(self, widget, data=None):
self.statusbar.pop(self.statbarCID)
gtk.timeout_remove(self.timer)
gtk.timeout_remove(self.timer1)
self.timer = 0
self.timer1 = 0
gtk.main_quit()
def refresh_menu(self, widget, data=None):
self.statusbar.pop(self.statbarCID)
self.listfiles()
def random_menu(self, widget, data=None):
self.statusbar.pop(self.statbarCID)
self.defsize = self.spinner.get_value_as_int()
maxsize= self.defsize * 1024 * 1024
self.cplist=[]
complete = 0
size = 0
while complete == 0:
file = self.fileslist[random.randint(0,len(self.fileslist)-1)]
fsize = int(os.stat(file)[6])
if (size + fsize) < maxsize:
self.cplist.append(file)
size = size + fsize
else:
complete = 1
self.transfer_menu(widget)
def transfer_menu(self, widget, data=None):
if self.dstdir == "":
self.dstdir_menu(widget)
self.statusbar.pop(self.statbarCID)
self.model.clear()
self.transfermode = 1
def dstdir_menu(self, widget, data=None):
self.statusbar.pop(self.statbarCID)
dir='/'
dlg = gtk.FileSelection(title = 'Select destination directory...')
dlg.file_list.set_sensitive(0)
dlg.set_filename(dir)
response = dlg.run()
if response == gtk.RESPONSE_OK:
self.dstdir = dlg.get_filename()
else:
self.dstdir = '/'
self.txtentry.set_text(self.dstdir)
dlg.destroy()
def browse_menu(self, widget, data=None):
self.statusbar.pop(self.statbarCID)
dir=self.pathname+'/'
if(dir=='/'):
dir = "~/"
dlg = gtk.FileSelection(title = 'Select directory...')
dlg.file_list.set_sensitive(0)
dlg.set_filename(dir)
response = dlg.run()
if response == gtk.RESPONSE_OK:
self.pathname = dlg.get_filename()
self.listfiles()
else:
self.pathname = '/'
self.txtentry0.set_text(self.pathname)
dlg.destroy()
def __init__(self):
self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)
self.window.set_title("Random Files")
self.window.set_geometry_hints(min_width=360, min_height=200)
self.window.connect("delete_event", self.delete_event)
self.window.connect("destroy", self.destroy)
self.pathname = "~/"
self.transfermode = 0
self.dstdir = ""
self.defsize = 128
self.copying = 0
self.vbox1 = gtk.VBox(gtk.FALSE,0)
self.window.add(self.vbox1)
self.hsep = gtk.HSeparator()
self.vbox1.pack_start(self.hsep,gtk.FALSE,gtk.FALSE,0)
self.hbox0 = gtk.HBox(gtk.FALSE,0)
self.vbox1.pack_start(self.hbox0,gtk.FALSE, gtk.FALSE,0)
self.label0 = gtk.Label("Src Dir: ")
self.hbox0.pack_start(self.label0,gtk.FALSE,gtk.TRUE,0)
self.txtentry0 = gtk.Entry(max=0)
self.txtentry0.set_text(self.pathname)
self.txtentry0.connect("activate", self.src_callback, self.txtentry0)
self.hbox0.pack_start(self.txtentry0,gtk.TRUE,gtk.TRUE,0)
self.button1 = gtk.Button(None,"Browse")
self.button1.connect_object("clicked", self.browse_menu, None)
self.hbox0.pack_start(self.button1,gtk.FALSE,gtk.TRUE,0)
self.label9 = gtk.Label(" ")
self.hbox0.pack_start(self.label9,gtk.FALSE,gtk.TRUE,0)
self.hbox1 = gtk.HBox(gtk.FALSE,0)
self.vbox1.pack_start(self.hbox1,gtk.FALSE, gtk.FALSE,0)
self.label = gtk.Label("Dst Dir: ")
self.hbox1.pack_start(self.label,gtk.FALSE,gtk.TRUE,0)
self.txtentry = gtk.Entry(max=0)
self.txtentry.set_text(self.dstdir)
self.txtentry.connect("activate", self.enter_callback, self.txtentry)
self.hbox1.pack_start(self.txtentry,gtk.TRUE,gtk.TRUE,0)
self.button5 = gtk.Button(None,"Browse")
self.button5.connect_object("clicked", self.dstdir_menu, None)
self.hbox1.pack_start(self.button5,gtk.FALSE,gtk.TRUE,0)
self.label1 = gtk.Label(" ")
self.hbox1.pack_start(self.label1,gtk.FALSE,gtk.TRUE,0)
self.hbox2 = gtk.HBox(gtk.FALSE,0)
self.vbox1.pack_start(self.hbox2,gtk.FALSE, gtk.FALSE,0)
self.label2 = gtk.Label("Size (MB): ")
self.hbox2.pack_start(self.label2,gtk.FALSE,gtk.TRUE,0)
self.adj = gtk.Adjustment(self.defsize, 1.0, 512.0, 1.0, 10.0, 0.0)
self.spinner = gtk.SpinButton(self.adj, 0, 0)
self.spinner.set_wrap(gtk.TRUE)
self.hbox2.pack_start(self.spinner, gtk.FALSE, gtk.TRUE, 0)
self.toolbar = gtk.Toolbar()
self.toolbar.set_style(gtk.TOOLBAR_BOTH)
self.vbox1.pack_start(self.toolbar,gtk.FALSE,gtk.FALSE,0)
self.toolbutton2 = gtk.ToolButton(None,"Transfer")
self.toolbutton2.connect_object("clicked", self.transfer_menu, None)
self.toolbar.add(self.toolbutton2)
self.toolbutton3 = gtk.ToolButton(None,"Random")
self.toolbutton3.connect_object("clicked", self.random_menu, None)
self.toolbar.add(self.toolbutton3)
self.toolbutton4 = gtk.ToolButton(None,"Quit")
self.toolbutton4.connect_object("clicked", self.destroy, None)
self.toolbar.add(self.toolbutton4)
self.scwindow = gtk.ScrolledWindow()
self.scwindow.set_shadow_type(gtk.SHADOW_IN)
self.vbox1.pack_start(self.scwindow,gtk.TRUE,gtk.TRUE,0)
self.model = gtk.ListStore(gobject.TYPE_STRING)
self.listfiles()
self.treeview = gtk.TreeView(self.model)
self.column = gtk.TreeViewColumn("Folder", gtk.CellRendererText(), text=0)
self.treeview.append_column(self.column)
self.treeview.set_headers_visible(gtk.FALSE)
self.scwindow.add(self.treeview)
self.hbox = gtk.HBox(gtk.TRUE,0)
self.vbox1.pack_start(self.hbox,gtk.FALSE, gtk.FALSE,0)
self.progbar = gtk.ProgressBar()
self.progbar.set_orientation(gtk.PROGRESS_LEFT_TO_RIGHT)
self.progbar.set_pulse_step(0.1)
self.hbox.pack_start(self.progbar,gtk.FALSE,gtk.TRUE,0)
self.timer = gtk.timeout_add (100, progress_timeout, self)
self.timer1 = gtk.timeout_add (100, copy_file, self)
self.statusbar = gtk.Statusbar()
self.statbarCID = self.statusbar.get_context_id('my stat bar')
self.hbox.pack_start(self.statusbar,gtk.FALSE,gtk.TRUE,0)
self.vbox1.show()
self.hsep.show()
self.toolbar.show()
self.toolbutton3.show()
self.toolbutton4.show()
self.hbox0.show()
self.label0.show()
self.txtentry0.show()
self.button1.show()
self.hbox1.show()
self.label.show()
self.label9.show()
self.txtentry.show()
self.button5.show()
self.label1.show()
self.hbox2.show()
self.label2.show()
self.spinner.show()
self.scwindow.show()
self.treeview.show()
self.hbox.show()
self.progbar.show()
self.statusbar.show()
self.window.show()
def main(self):
gtk.main()
if __name__ == "__main__":
RM = RanFiles()
RM.main()
--
Samuele Giovanni Tonon <tonon at students.cs.unibo.it>
5% fats, 2% cerebral activities
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