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status_label.py
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status_label.py
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# -*- coding: utf-8 -*-
# -----------------------------------------------------------------------------
# PyRoom - A clone of WriteRoom
# Copyright (c) 2007 Nicolas P. Rougier & NoWhereMan
# Copyright (c) 2008 The Pyroom Team - See AUTHORS file for more information
#
# 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 3 of the License, or (at your option) any later
# version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along with
# this program. If not, see <http://www.gnu.org/licenses/>.
# -----------------------------------------------------------------------------
"""
status bar
provides a fading status bar that displays information to the user
"""
import gobject
import gtk
class FadeLabel(gtk.Label):
""" GTK Label with timed fade out effect """
active_duration = 3000 # Fade start after this time
fade_duration = 1500.0 # Fade duration
def __init__(self, message='', active_color=None, inactive_color=None):
gtk.Label.__init__(self, message)
if not active_color:
active_color = '#ffffff'
self.active_color = active_color
if not inactive_color:
inactive_color = '#000000'
self.fade_level = 0
self.inactive_color = inactive_color
self.idle = 0
def set_text(self, message, duration=None):
"""change text that is displayed
@param message: message to display
@param duration: duration in miliseconds"""
if not duration:
duration = self.active_duration
self.modify_fg(gtk.STATE_NORMAL,
gtk.gdk.color_parse(self.active_color))
gtk.Label.set_text(self, message)
if self.idle:
gobject.source_remove(self.idle)
self.idle = gobject.timeout_add(duration, self.fade_start)
def fade_start(self):
"""start fading timer"""
self.fade_level = 1.0
if self.idle:
gobject.source_remove(self.idle)
self.idle = gobject.timeout_add(25, self.fade_out)
def fade_out(self):
"""now fade out"""
color = gtk.gdk.color_parse(self.inactive_color)
(red1, green1, blue1) = (color.red, color.green, color.blue)
color = gtk.gdk.color_parse(self.active_color)
(red2, green2, blue2) = (color.red, color.green, color.blue)
red = red1 + int(self.fade_level * abs(red1 - red2))
green = green1 + int(self.fade_level * abs(green1 - green2))
blue = blue1 + int(self.fade_level * abs(blue1 - blue2))
self.modify_fg(gtk.STATE_NORMAL, gtk.gdk.Color(red, green, blue))
self.fade_level -= 1.0 / (self.fade_duration / 25)
if self.fade_level > 0:
return True
self.idle = 0
return False