101 lines
3.5 KiB
Python
101 lines
3.5 KiB
Python
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# Miscellaneous UI functions
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#
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# Copyright (C) 2012 Red Hat, Inc.
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#
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# This copyrighted material is made available to anyone wishing to use,
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# modify, copy, or redistribute it subject to the terms and conditions of
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# the GNU General Public License v.2, or (at your option) any later version.
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY expressed or implied, including the implied warranties of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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# Public License for more details. You should have received a copy of the
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# GNU General Public License along with this program; if not, write to the
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# Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA. Any Red Hat trademarks that are incorporated in the
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# source code or documentation are not subject to the GNU General Public
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# License and may only be used or replicated with the express permission of
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# Red Hat, Inc.
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#
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# Red Hat Author(s): Chris Lumens <clumens@redhat.com>
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#
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from contextlib import contextmanager
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from gi.repository import Gdk, Gtk, GLib
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import Queue
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def gtk_call_once(func, *args):
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"""Wrapper for GLib.idle_add call that ensures the func is called
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only once.
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"""
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def wrap(args):
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func(*args)
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return False
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GLib.idle_add(wrap, args)
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def gtk_thread_wait(func):
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"""Decorator method which causes every call of the decorated function
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to be executed in the context of Gtk main loop and returns the ret
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value after the decorated method finishes.
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Method decorated by this decorator must not be called from inside
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of the Gtk main loop. It will cause a hang.
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"""
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queue = Queue.Queue()
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def _idle_method(q_args):
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"""This method contains the code for the main loop to execute.
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"""
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queue, args = q_args
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ret = func(*args)
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queue.put(ret)
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return False
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def _call_method(*args):
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"""The new body for the decorated method. It uses closure bound
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queue variable which is valid until the reference to this method
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is destroyed."""
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GLib.idle_add(_idle_method, (queue, args))
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return queue.get()
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return _call_method
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def gtk_thread_nowait(func):
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"""Decorator method which causes every call of the decorated function
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to be executed in the context of Gtk main loop. The new method does
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not wait for the callback to finish.
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"""
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def _idle_method(args):
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"""This method contains the code for the main loop to execute.
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"""
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ret = func(*args)
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return False
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def _call_method(*args):
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"""The new body for the decorated method.
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"""
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GLib.idle_add(_idle_method, args)
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return _call_method
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@contextmanager
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def enlightbox(mainWindow, dialog):
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from gi.repository import AnacondaWidgets
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lightbox = AnacondaWidgets.lb_show_over(mainWindow)
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dialog.set_transient_for(lightbox)
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yield
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lightbox.destroy()
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def setViewportBackground(vp, color="@theme_bg_color"):
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"""Set the background color of the GtkViewport vp to be the same as the
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overall UI background. This should not be called for every viewport,
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as that will affect things like TreeViews as well.
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"""
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provider = Gtk.CssProvider()
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provider.load_from_data("GtkViewport { background-color: %s }" % color)
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context = vp.get_style_context()
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context.add_provider(provider, Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION)
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