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# -*- coding: utf-8 -*-
"""
OnionShare | https://onionshare.org/
Copyright (C) 2018 Micah Lee <micah@micahflee.com>
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/>.
"""
import time
from PyQt5 import QtCore, QtWidgets
from onionshare import strings, common
class Download(object):
def __init__(self, download_id, total_bytes):
self.download_id = download_id
self.started = time.time()
self.total_bytes = total_bytes
self.downloaded_bytes = 0
# make a new progress bar
cssStyleData ="""
QProgressBar {
border: 1px solid #4e064f;
background-color: #ffffff !important;
text-align: center;
color: #9b9b9b;
font-size: 12px;
}
QProgressBar::chunk {
background-color: #4e064f;
width: 10px;
}"""
self.progress_bar = QtWidgets.QProgressBar()
self.progress_bar.setTextVisible(True)
self.progress_bar.setAttribute(QtCore.Qt.WA_DeleteOnClose)
self.progress_bar.setAlignment(QtCore.Qt.AlignHCenter)
self.progress_bar.setMinimum(0)
self.progress_bar.setMaximum(total_bytes)
self.progress_bar.setValue(0)
self.progress_bar.setStyleSheet(cssStyleData)
self.progress_bar.total_bytes = total_bytes
# start at 0
self.update(0)
def update(self, downloaded_bytes):
self.downloaded_bytes = downloaded_bytes
self.progress_bar.setValue(downloaded_bytes)
if downloaded_bytes == self.progress_bar.total_bytes:
pb_fmt = strings._('gui_download_progress_complete').format(
common.format_seconds(time.time() - self.started))
else:
elapsed = time.time() - self.started
if elapsed < 10:
# Wait a couple of seconds for the download rate to stabilize.
# This prevents a "Windows copy dialog"-esque experience at
# the beginning of the download.
pb_fmt = strings._('gui_download_progress_starting').format(
common.human_readable_filesize(downloaded_bytes))
else:
pb_fmt = strings._('gui_download_progress_eta').format(
common.human_readable_filesize(downloaded_bytes),
self.estimated_time_remaining)
self.progress_bar.setFormat(pb_fmt)
def cancel(self):
self.progress_bar.setFormat(strings._('gui_canceled'))
@property
def estimated_time_remaining(self):
return common.estimated_time_remaining(self.downloaded_bytes,
self.total_bytes,
self.started)
class Downloads(QtWidgets.QWidget):
"""
The downloads chunk of the GUI. This lists all of the active download
progress bars.
"""
def __init__(self):
super(Downloads, self).__init__()
self.downloads = {}
self.layout = QtWidgets.QVBoxLayout()
self.setLayout(self.layout)
def add_download(self, download_id, total_bytes):
"""
Add a new download progress bar.
"""
self.parent().show()
# add it to the list
download = Download(download_id, total_bytes)
self.downloads[download_id] = download
self.layout.insertWidget(-1, download.progress_bar)
def update_download(self, download_id, downloaded_bytes):
"""
Update the progress of a download progress bar.
"""
self.downloads[download_id].update(downloaded_bytes)
def cancel_download(self, download_id):
"""
Update a download progress bar to show that it has been canceled.
"""
self.downloads[download_id].cancel()
def reset_downloads(self):
"""
Reset the downloads back to zero
"""
for download in self.downloads.values():
self.layout.removeWidget(download.progress_bar)
download.progress_bar.close()
self.downloads = {}
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