/usr/lib/python2.7/dist-packages/ubuntu-sso-client/ubuntu_sso/qt/loadingoverlay.py is in ubuntu-sso-client-qt 13.10-0ubuntu6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 | # -*- coding: utf-8 -*-
#
# Copyright 2012 Canonical Ltd.
#
# This program is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License version 3, as published
# by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranties of
# MERCHANTABILITY, SATISFACTORY QUALITY, 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/>.
#
# In addition, as a special exception, the copyright holders give
# permission to link the code of portions of this program with the
# OpenSSL library under certain conditions as described in each
# individual source file, and distribute linked combinations
# including the two.
# You must obey the GNU General Public License in all respects
# for all of the code used other than OpenSSL. If you modify
# file(s) with this exception, you may extend this exception to your
# version of the file(s), but you are not obligated to do so. If you
# do not wish to do so, delete this exception statement from your
# version. If you delete this exception statement from all source
# files in the program, then also delete it here.
"""Loading animation over a widget."""
from __future__ import unicode_literals
from PyQt4 import QtGui, QtCore
from ubuntu_sso.qt.ui import loadingoverlay_ui
from ubuntu_sso.utils.ui import LOADING_OVERLAY
LOADING_STYLE = '<span style="font-size:x-large;">{0}</span>'
class LoadingOverlay(QtGui.QFrame):
"""The widget that shows a loading animation and disable the widget below.
In order to have this working, the Widget which is going to use this
overlay has to reimplement the resizeEvent as follows:
def resizeEvent(self, event):
self.overlay.resize(event.size())
event.accept()
"""
def __init__(self, parent=None):
super(LoadingOverlay, self).__init__(parent=parent)
self.ui = loadingoverlay_ui.Ui_Form()
self.ui.setupUi(self)
self.timer = None
self.counter = 0
self.orientation = False
self.ui.label.setText(LOADING_STYLE.format(LOADING_OVERLAY))
# Invalid name "paintEvent", "eventFilter", "showEvent", "timerEvent"
# pylint: disable=C0103
def paintEvent(self, event):
"""Paint over the widget to overlay its content."""
painter = QtGui.QPainter()
painter.begin(self)
painter.setRenderHint(QtGui.QPainter.TextAntialiasing, True)
painter.setRenderHint(QtGui.QPainter.Antialiasing, True)
painter.fillRect(event.rect(), QtGui.QBrush(
QtGui.QColor(255, 255, 255, 135)))
painter.setPen(QtGui.QPen(QtCore.Qt.NoPen))
painter.end()
QtGui.QFrame.paintEvent(self, event)
def eventFilter(self, obj, event):
"""Filter events from Frame content to draw the dot animation."""
if getattr(self, 'ui', None) is not None and \
obj == self.ui.frm_box and event.type() == QtCore.QEvent.Paint:
painter = QtGui.QPainter()
painter.begin(obj)
painter.setRenderHint(QtGui.QPainter.Antialiasing, True)
pos_x = self.ui.frm_box.width() / 3
x_padding = pos_x / 5
for i in range(5):
if self.counter != i:
linear_gradient = QtGui.QLinearGradient(
pos_x + (x_padding * i),
self.ui.frm_box.height() / 2 + 10,
pos_x + (x_padding * i) + 15,
self.ui.frm_box.height() / 2 + 25)
linear_gradient.setColorAt(0, QtGui.QColor(205, 200, 198))
linear_gradient.setColorAt(1, QtGui.QColor(237, 237, 237))
painter.setBrush(QtGui.QBrush(linear_gradient))
else:
linear_gradient = QtGui.QLinearGradient(
pos_x + (x_padding * i),
self.ui.frm_box.height() / 2 + 10,
pos_x + (x_padding * i) + 15,
self.ui.frm_box.height() / 2 + 25)
linear_gradient.setColorAt(0, QtGui.QColor(240, 67, 26))
linear_gradient.setColorAt(1, QtGui.QColor(255, 122, 53))
painter.setBrush(QtGui.QBrush(linear_gradient))
painter.drawEllipse(
pos_x + (x_padding * i),
self.ui.frm_box.height() / 2 + 10,
15, 15)
painter.end()
return False
def showEvent(self, event):
"""Start the dot animation."""
self.ui.frm_box.installEventFilter(self)
palette = QtGui.QPalette(self.palette())
palette.setColor(palette.Background, QtCore.Qt.transparent)
self.setPalette(palette)
if not self.timer:
self.timer = self.startTimer(200)
def timerEvent(self, event):
"""Execute a loop to update the dot animation."""
if self.counter in (0, 4):
self.orientation = not self.orientation
if self.orientation:
self.counter += 1
else:
self.counter -= 1
self.update()
# pylint: enable=C0103
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