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Queue.py
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# -*- coding: utf-8 -*-
"""
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/>.
@author: mkaay
"""
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from time import time
from module.remote.thriftbackend.ThriftClient import Destination
from module.gui.Collector import CollectorModel, Package, Link, CollectorView, statusMapReverse
from module.utils import formatSize, formatSpeed
class QueueModel(CollectorModel):
"""
model for the queue view, inherits from CollectorModel
"""
def __init__(self, view, connector):
CollectorModel.__init__(self, view, connector)
self.cols = 6
self.wait_dict = {}
self.updater = self.QueueUpdater(self.interval)
self.connect(self.updater, SIGNAL("update()"), self.update)
class QueueUpdater(QObject):
"""
timer which emits signal for a download status reload
@TODO: make intervall configurable
"""
def __init__(self, interval):
QObject.__init__(self)
self.interval = interval
self.timer = QTimer()
self.timer.connect(self.timer, SIGNAL("timeout()"), self, SIGNAL("update()"))
def start(self):
self.timer.start(1000)
def stop(self):
self.timer.stop()
def start(self):
self.updater.start()
def stop(self):
self.updater.stop()
def fullReload(self):
"""
reimplements CollectorModel.fullReload, because we want the Queue data
"""
self._data = []
order = self.connector.getPackageOrder(Destination.Queue)
self.beginInsertRows(QModelIndex(), 0, len(order.values()))
for position, pid in order.iteritems():
pack = self.connector.getPackageData(pid)
package = Package(pack)
self._data.append(package)
self._data = sorted(self._data, key=lambda p: p.data["order"])
self.endInsertRows()
self.updateCount()
def insertEvent(self, event):
"""
wrap CollectorModel.insertEvent to update the element count
"""
CollectorModel.insertEvent(self, event)
self.updateCount()
def removeEvent(self, event):
"""
wrap CollectorModel.removeEvent to update the element count
"""
CollectorModel.removeEvent(self, event)
self.updateCount()
def updateEvent(self, event):
"""
wrap CollectorModel.updateEvent to update the element count
"""
CollectorModel.updateEvent(self, event)
self.updateCount()
def updateCount(self):
"""
calculate package- and filecount for statusbar,
ugly?: Overview connects to this signal for updating
"""
packageCount = len(self._data)
fileCount = 0
for p in self._data:
fileCount += len(p.children)
self.mutex.unlock()
self.emit(SIGNAL("updateCount"), packageCount, fileCount)
self.mutex.lock()
def update(self):
"""
update slot for download status updating
"""
locker = QMutexLocker(self.mutex)
downloading = self.connector.statusDownloads()
if not downloading:
return
for p, pack in enumerate(self._data):
for d in downloading:
child = pack.getChild(d.fid)
if child:
dd = {
"name": d.name,
"speed": d.speed,
"eta": d.eta,
"format_eta": d.format_eta,
"bleft": d.bleft,
"size": d.size,
"format_size": d.format_size,
"percent": d.percent,
"status": d.status,
"statusmsg": d.statusmsg,
"format_wait": d.format_wait,
"wait_until": d.wait_until
}
child.data["downloading"] = dd
k = pack.getChildKey(d.fid)
self.emit(SIGNAL("dataChanged(const QModelIndex &, const QModelIndex &)"), self.index(k, 0, self.index(p, 0)), self.index(k, self.cols, self.index(p, self.cols)))
self.updateCount()
def headerData(self, section, orientation, role=Qt.DisplayRole):
"""
returns column heading
"""
if orientation == Qt.Horizontal and role == Qt.DisplayRole:
if section == 0:
return QVariant(_("Name"))
elif section == 2:
return QVariant(_("Status"))
elif section == 1:
return QVariant(_("Plugin"))
elif section == 3:
return QVariant(_("Size"))
elif section == 4:
return QVariant(_("ETA"))
elif section == 5:
return QVariant(_("Progress"))
return QVariant()
def getWaitingProgress(self, item):
"""
returns time to wait, caches startingtime to provide progress
"""
locker = QMutexLocker(self.mutex)
if isinstance(item, Link):
if item.data["status"] == 5 and item.data["downloading"]:
until = float(item.data["downloading"]["wait_until"])
try:
since, until_old = self.wait_dict[item.id]
if not until == until_old:
raise Exception
except:
since = time()
self.wait_dict[item.id] = since, until
since = float(since)
max_wait = float(until-since)
rest = int(until-time())
if rest < 0:
return 0, None
res = 100/max_wait
perc = rest*res
return perc, rest
return None
def getProgress(self, item, locked=True):
"""
return download progress, locks by default
since it's used in already locked calls,
it provides an option to not lock
"""
if locked:
locker = QMutexLocker(self.mutex)
if isinstance(item, Link):
try:
if item.data["status"] == 0:
return 100
return int(item.data["downloading"]["percent"])
except:
return 0
elif isinstance(item, Package):
count = len(item.children)
perc_sum = 0
for child in item.children:
try:
if child.data["status"] == 0: #completed
perc_sum += 100
perc_sum += int(child.data["downloading"]["percent"])
except:
pass
if count == 0:
return 0
return perc_sum/count
return 0
def getSpeed(self, item):
"""
calculate download speed
"""
if isinstance(item, Link):
if item.data["downloading"]:
return int(item.data["downloading"]["speed"])
elif isinstance(item, Package):
count = len(item.children)
speed_sum = 0
all_waiting = True
running = False
for child in item.children:
val = 0
if child.data["downloading"]:
if not child.data["statusmsg"] == "waiting":
all_waiting = False
val = int(child.data["downloading"]["speed"])
running = True
speed_sum += val
if count == 0 or not running or all_waiting:
return None
return speed_sum
return None
def data(self, index, role=Qt.DisplayRole):
"""
return cell data
"""
if not index.isValid():
return QVariant()
if role == Qt.DisplayRole:
if index.column() == 0:
return QVariant(index.internalPointer().data["name"])
elif index.column() == 1:
item = index.internalPointer()
plugins = []
if isinstance(item, Package):
for child in item.children:
if not child.data["plugin"] in plugins:
plugins.append(child.data["plugin"])
else:
plugins.append(item.data["plugin"])
return QVariant(", ".join(plugins))
elif index.column() == 2:
item = index.internalPointer()
status = 0
speed = self.getSpeed(item)
if isinstance(item, Package):
for child in item.children:
if child.data["status"] > status:
status = child.data["status"]
else:
status = item.data["status"]
if speed is None or status == 7 or status == 10 or status == 5:
return QVariant(self.translateStatus(statusMapReverse[status]))
else:
return QVariant("%s (%s)" % (self.translateStatus(statusMapReverse[status]), formatSpeed(speed)))
elif index.column() == 3:
item = index.internalPointer()
if isinstance(item, Link):
if item.data["status"] == 0: #TODO needs change??
#self.getProgress(item, False) == 100:
return QVariant(formatSize(item.data["size"]))
elif self.getProgress(item, False) == 0:
try:
return QVariant("%s / %s" % (formatSize(item.data["size"]-item.data["downloading"]["bleft"]), formatSize(item.data["size"])))
except:
return QVariant("0 B / %s" % formatSize(item.data["size"]))
else:
try:
return QVariant("%s / %s" % (formatSize(item.data["size"]-item.data["downloading"]["bleft"]), formatSize(item.data["size"])))
except:
return QVariant("? / %s" % formatSize(item.data["size"]))
else:
ms = 0
cs = 0
for c in item.children:
try:
s = c.data["downloading"]["size"]
except:
s = c.data["size"]
if c.data["downloading"]:
cs += s - c.data["downloading"]["bleft"]
elif self.getProgress(c, False) == 100:
cs += s
ms += s
if cs == 0 or cs == ms:
return QVariant(formatSize(ms))
else:
return QVariant("%s / %s" % (formatSize(cs), formatSize(ms)))
elif index.column() == 4:
item = index.internalPointer()
if isinstance(item, Link):
if item.data["downloading"]:
return QVariant(item.data["downloading"]["format_eta"])
elif role == Qt.EditRole:
if index.column() == 0:
return QVariant(index.internalPointer().data["name"])
return QVariant()
def flags(self, index):
"""
cell flags
"""
if index.column() == 0 and self.parent(index) == QModelIndex():
return Qt.ItemIsSelectable | Qt.ItemIsEditable | Qt.ItemIsEnabled
return Qt.ItemIsSelectable | Qt.ItemIsEnabled
class QueueView(CollectorView):
"""
view component for queue
"""
def __init__(self, connector):
CollectorView.__init__(self, connector)
self.setModel(QueueModel(self, connector))
self.setColumnWidth(0, 300)
self.setColumnWidth(1, 100)
self.setColumnWidth(2, 140)
self.setColumnWidth(3, 180)
self.setColumnWidth(4, 70)
self.setEditTriggers(QAbstractItemView.NoEditTriggers)
self.delegate = QueueProgressBarDelegate(self, self.model())
self.setItemDelegateForColumn(5, self.delegate)
class QueueProgressBarDelegate(QItemDelegate):
"""
used to display a progressbar in the progress cell
"""
def __init__(self, parent, queue):
QItemDelegate.__init__(self, parent)
self.queue = queue
def paint(self, painter, option, index):
"""
paint the progressbar
"""
if not index.isValid():
return
if index.column() == 5:
item = index.internalPointer()
w = self.queue.getWaitingProgress(item)
wait = None
if w:
progress = w[0]
wait = w[1]
else:
progress = self.queue.getProgress(item)
opts = QStyleOptionProgressBarV2()
opts.maximum = 100
opts.minimum = 0
opts.progress = progress
opts.rect = option.rect
opts.rect.setRight(option.rect.right()-1)
opts.rect.setHeight(option.rect.height()-1)
opts.textVisible = True
opts.textAlignment = Qt.AlignCenter
if not wait is None:
opts.text = QString(_("waiting %d seconds") % (wait,))
else:
opts.text = QString.number(opts.progress) + "%"
QApplication.style().drawControl(QStyle.CE_ProgressBar, opts, painter)
return
QItemDelegate.paint(self, painter, option, index)