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# -*- coding: utf-8 -*-
#
# gtklick
#
# Copyright (C) 2008-2010 Dominic Sacré <dominic.sacre@gmx.de>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
import gtk
import gtk.keysyms
import gobject
import inspect
import weakref, new
block = False
# decorator: don't call function while gtk signals are blocked
def gui_callback(f):
def g(self, *args):
global block
# FIXME: it may be a bad idea to discard arbitrary signals
if not block:
return f(self, *args)
return g
# decorator: enclose the function in threads_enter() / threads_leave() to safely call
# gtk functions, and block gtk signals while the function is running
def osc_callback(f):
def g(self, *args):
global block
try:
gtk.gdk.threads_enter()
block = True
#print args[0], args[1]
# call function with the correct number of arguments, to allow osc callbacks to omit
# some of pyliblo's callback arguments
if inspect.getargspec(f)[1] == None:
n = len(inspect.getargspec(f)[0]) - 1
r = f(self, *args[0:n])
else:
r = f(self, *args)
return r
finally:
block = False
gtk.gdk.threads_leave()
return g
# block gtk signals while calling function f
def do_quietly(f):
global block
try:
block = True
return f()
finally:
block = False
class weakref_method:
def __init__(self, f):
self.inst = weakref.ref(f.im_self)
self.func = f.im_func
def __call__(self, *args, **kwargs):
f = new.instancemethod(self.func, self.inst(), self.inst().__class__)
return f(*args, **kwargs)
# calls function once when going idle, blocking redundant calls
class run_idle_once:
def __init__(self, call):
self.call = call
self.pending = False
def queue(self):
if not self.pending:
self.pending = True
gobject.idle_add(self.call_wrapper)
def call_wrapper(self):
self.pending = False
self.call()
return False
class TristateCheckButton(gtk.CheckButton):
def __init__(self, label):
gtk.CheckButton.__init__(self, label)
self.connect('button-release-event', self.on_button_released)
self.connect('key-press-event', self.on_key_pressed)
def get_state(self):
if self.get_inconsistent():
return 1
elif self.get_active():
return 2
else:
return 0
def set_state(self, state):
toggle = self.get_inconsistent() != (state == 1) and self.get_active() == (state != 0)
self.set_inconsistent(state == 1)
self.set_active(state != 0)
if toggle:
# emit "toggled" manually if "active" didn't change, but "inconsistent" did
self.toggled()
def on_button_released(self, b, ev):
s = ev.get_state()
if s & gtk.gdk.CONTROL_MASK:
if s & gtk.gdk.BUTTON1_MASK:
self.set_state(2)
elif s & gtk.gdk.BUTTON2_MASK:
self.set_state(1)
elif s & gtk.gdk.BUTTON3_MASK:
self.set_state(0)
else:
if s & gtk.gdk.BUTTON1_MASK:
self.set_state((self.get_state() - 1) % 3)
elif s & gtk.gdk.BUTTON2_MASK:
self.set_state(1 if self.get_state() == 2 else 2)
elif s & gtk.gdk.BUTTON3_MASK:
self.set_state(1 if self.get_state() == 0 else 0)
self.queue_draw()
return True
def on_key_pressed(self, b, ev):
if ev.keyval == gtk.keysyms.space:
self.set_state((self.get_state() - 1) % 3)
self.queue_draw()
return True
else:
return False
def treeview_remove(model, selection, i):
path = model.get_path(i)
model.remove(i)
# select next item
selection.select_path(path)
if not selection.path_is_selected(path):
row = path[0]-1
if row >= 0:
selection.select_path(row)
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