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# This file is part of the Frescobaldi project, http://www.frescobaldi.org/
#
# Copyright (c) 2008, 2009, 2010 by Wilbert Berendsen
#
# 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 2
# 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, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
# See http://www.gnu.org/licenses/ for more information.
from __future__ import unicode_literals
"""
Code that manages the progress bar at the bottom of
the Frescobaldi main window
"""
import weakref, time
from PyQt4.QtCore import QTimer
_ticks = 10 # ticks per second
class ProgressBarManager(object):
def __init__(self, jobmanager, progressbar):
self.bar = progressbar
self.man = jobmanager
self.times = weakref.WeakKeyDictionary() # don't keep real references
self.timer = QTimer()
self.hideTimer = QTimer()
self.timer.setInterval(1000 / _ticks)
self.timer.timeout.connect(self.timeout)
self.hideTimer.setInterval(3000)
self.hideTimer.setSingleShot(True)
self.hideTimer.timeout.connect(self.bar.hide)
self.man.jobStarted.connect(self.start)
self.man.jobFinished.connect(self.stop)
def start(self, job):
""" Call this when a job has started. """
doc = job.document
lastruntime = doc.metainfo["build time"]
if lastruntime == 0.0:
lastruntime = 3.0 + doc.lines() / 20 # very arbitrary estimate...
self.times[doc] = time.time()
if self.man.count() == 1:
self.hideTimer.stop()
self.bar.show()
self.bar.setValue(0)
self.bar.setMaximum(0)
self.timer.start()
self.bar.setMaximum(self.bar.maximum() + int(_ticks * lastruntime))
def stop(self, job, success):
""" Call this when a job has stopped. """
doc = job.document
starttime = self.times.get(doc, 0.0)
if starttime and success:
runtime = time.time() - starttime
doc.metainfo["build time"] = runtime
if self.man.count() == 0:
self.timer.stop()
if success:
self.bar.setValue(self.bar.maximum())
self.hideTimer.start()
else:
self.bar.hide()
def timeout(self):
self.bar.setValue(self.bar.value() + 1)
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