#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# PEP8:NO, LINT:OK, PY3:OK
# metadata
"""Pyority."""
__package__ = "pyority"
__version__ = ' 0.0.1 '
__license__ = ' GPLv3+ LGPLv3+ '
__author__ = ' juancarlos '
__email__ = ' juancarlospaco@gmail.com '
__url__ = 'https://github.com/juancarlospaco/pyority#pyority'
__date__ = '2015/01/01'
__docformat__ = 'html'
__source__ = ('https://raw.githubusercontent.com/juancarlospaco/'
'pyority/master/pyority.py')
# imports
import os
import sys
from ctypes import byref, cdll, create_string_buffer
from copy import copy
from getopt import getopt
from getpass import getuser
import logging as log
from subprocess import call
from urllib import request
from webbrowser import open_new_tab
import signal
import time
from datetime import datetime
import psutil
from PyQt5.QtCore import QSize, Qt, QTimer, QUrl
from PyQt5.QtGui import QColor, QIcon
from PyQt5.QtNetwork import (QNetworkAccessManager, QNetworkProxyFactory,
QNetworkRequest)
from PyQt5.QtWidgets import (QAbstractItemView, QApplication, QFontDialog,
QGraphicsDropShadowEffect, QGroupBox, QHBoxLayout,
QLabel, QMainWindow, QMessageBox, QShortcut,
QSlider, QTableWidget, QTableWidgetItem,
QVBoxLayout, QWidget, QProgressDialog)
HELP = """Pyority:
Change CPU and I/O Priority with Python!
{} version {}, licence GPLv3+,by {}""".format(__doc__, __version__, __author__)
###############################################################################
class Downloader(QProgressDialog):
"""Downloader Dialog with complete informations and progress bar."""
def __init__(self, parent=None):
"""Init class."""
super(Downloader, self).__init__(parent)
self.setWindowTitle(__doc__)
if not os.path.isfile(__file__) or not __source__:
return
if not os.access(__file__, os.W_OK):
error_msg = ("Destination file permission denied (not Writable)! "
"Try again to Update but as root or administrator.")
log.critical(error_msg)
QMessageBox.warning(self, __doc__.title(), error_msg)
return
self._time, self._date = time.time(), datetime.now().isoformat()[:-7]
self._url, self._dst = __source__, __file__
log.debug("Downloading from {} to {}.".format(self._url, self._dst))
if not self._url.lower().startswith("https:"):
log.warning("Unsecure Download over plain text without SSL.")
self.template = """Downloading
| From: | {} |
| To: | {} |
| Started: | {} |
| Actual: | {} |
| Elapsed: | {} |
| Remaining: | {} |
| Received: | {} MegaBytes |
| Total: | {} MegaBytes |
| Speed: | {} |
| Percent: | {}% |
"""
self.manager = QNetworkAccessManager(self)
self.manager.finished.connect(self.save_downloaded_data)
self.manager.sslErrors.connect(self.download_failed)
self.progreso = self.manager.get(QNetworkRequest(QUrl(self._url)))
self.progreso.downloadProgress.connect(self.update_download_progress)
self.show()
self.exec_()
def save_downloaded_data(self, data):
"""Save all downloaded data to the disk and quit."""
log.debug("Download done. Update Done.")
with open(os.path.join(self._dst), "wb") as output_file:
output_file.write(data.readAll())
data.close()
QMessageBox.information(self, __doc__.title(),
"You got the latest version of this App!")
del self.manager, data
return self.close()
def download_failed(self, download_error):
"""Handle a download error, probable SSL errors."""
log.error(download_error)
QMessageBox.warning(self, __doc__.title(), str(download_error))
def seconds_time_to_human_string(self, time_on_seconds=0):
"""Calculate time, with precision from seconds to days."""
minutes, seconds = divmod(int(time_on_seconds), 60)
hours, minutes = divmod(minutes, 60)
days, hours = divmod(hours, 24)
human_time_string = ""
if days:
human_time_string += "%02d Days " % days
if hours:
human_time_string += "%02d Hours " % hours
if minutes:
human_time_string += "%02d Minutes " % minutes
human_time_string += "%02d Seconds" % seconds
return human_time_string
def update_download_progress(self, bytesReceived, bytesTotal):
"""Calculate statistics and update the UI with them."""
downloaded_MB = round(((bytesReceived / 1024) / 1024), 2)
total_data_MB = round(((bytesTotal / 1024) / 1024), 2)
downloaded_KB, total_data_KB = bytesReceived / 1024, bytesTotal / 1024
# Calculate download speed values, with precision from Kb/s to Gb/s
elapsed = time.clock()
if elapsed > 0:
speed = round((downloaded_KB / elapsed), 2)
if speed > 1024000: # Gigabyte speeds
download_speed = "{} GigaByte/Second".format(speed // 1024000)
if speed > 1024: # MegaByte speeds
download_speed = "{} MegaBytes/Second".format(speed // 1024)
else: # KiloByte speeds
download_speed = "{} KiloBytes/Second".format(int(speed))
if speed > 0:
missing = abs((total_data_KB - downloaded_KB) // speed)
percentage = int(100.0 * bytesReceived // bytesTotal)
self.setLabelText(self.template.format(
self._url.lower()[:99], self._dst.lower()[:99],
self._date, datetime.now().isoformat()[:-7],
self.seconds_time_to_human_string(time.time() - self._time),
self.seconds_time_to_human_string(missing),
downloaded_MB, total_data_MB, download_speed, percentage))
self.setValue(percentage)
###############################################################################
class MainWindow(QMainWindow):
"""Main window class."""
def __init__(self, parent=None):
"""Init class."""
super(MainWindow, self).__init__()
self.setWindowTitle(__doc__.strip().capitalize())
self.statusBar().showMessage(" Choose one App and move the sliders !")
self.setMinimumSize(480, 240)
self.setMaximumSize(640, 2048)
self.setWindowIcon(QIcon.fromTheme("preferences-system"))
self.center()
QShortcut("Ctrl+q", self, activated=lambda: self.close())
self.menuBar().addMenu("&File").addAction("Exit", exit)
windowMenu = self.menuBar().addMenu("&Window")
windowMenu.addAction("Minimize", lambda: self.showMinimized())
windowMenu.addAction("Maximize", lambda: self.showMaximized())
windowMenu.addAction("Restore", lambda: self.showNormal())
windowMenu.addAction("FullScreen", lambda: self.showFullScreen())
windowMenu.addAction("Center", lambda: self.center())
windowMenu.addAction("Top-Left", lambda: self.move(0, 0))
windowMenu.addAction("To Mouse", lambda: self.move_to_mouse_position())
windowMenu.addSeparator()
windowMenu.addAction(
"Increase size", lambda:
self.resize(self.size().width() * 1.4, self.size().height() * 1.4))
windowMenu.addAction("Decrease size", lambda: self.resize(
self.size().width() // 1.4, self.size().height() // 1.4))
windowMenu.addAction("Minimum size", lambda:
self.resize(self.minimumSize()))
windowMenu.addAction("Maximum size", lambda:
self.resize(self.maximumSize()))
windowMenu.addAction("Horizontal Wide", lambda: self.resize(
self.maximumSize().width(), self.minimumSize().height()))
windowMenu.addAction("Vertical Tall", lambda: self.resize(
self.minimumSize().width(), self.maximumSize().height()))
windowMenu.addSeparator()
windowMenu.addAction("Disable Resize", lambda:
self.setFixedSize(self.size()))
windowMenu.addAction("Set Interface Font...", lambda:
self.setFont(QFontDialog.getFont()[0]))
helpMenu = self.menuBar().addMenu("&Help")
helpMenu.addAction("About Qt 5", lambda: QMessageBox.aboutQt(self))
helpMenu.addAction("About Python 3",
lambda: open_new_tab('https://www.python.org'))
helpMenu.addAction("About" + __doc__,
lambda: QMessageBox.about(self, __doc__, HELP))
helpMenu.addSeparator()
helpMenu.addAction(
"Keyboard Shortcut",
lambda: QMessageBox.information(self, __doc__, "Quit = CTRL+Q"))
helpMenu.addAction("View Source Code",
lambda: call('xdg-open ' + __file__, shell=True))
helpMenu.addAction("View GitHub Repo", lambda: open_new_tab(__url__))
helpMenu.addAction("Report Bugs", lambda: open_new_tab(
'https://github.com/juancarlospaco/pyority/issues?state=open'))
helpMenu.addAction("Check Updates", lambda: Downloader(self))
container, child_container = QWidget(), QWidget()
container_layout = QVBoxLayout(container)
child_layout = QHBoxLayout(child_container)
self.setCentralWidget(container)
# widgets
group0 = QGroupBox("My Apps")
group1, group2 = QGroupBox("CPU Priority"), QGroupBox("HDD Priority")
child_layout.addWidget(group0)
child_layout.addWidget(group1)
child_layout.addWidget(group2)
container_layout.addWidget(child_container)
# table
self.table = QTableWidget()
self.table.setColumnCount(1)
self.table.verticalHeader().setVisible(True)
self.table.horizontalHeader().setVisible(False)
self.table.setShowGrid(False)
self.table.setAlternatingRowColors(True)
self.table.setIconSize(QSize(64, 64))
self.table.setSelectionMode(QAbstractItemView.SingleSelection)
self.table.setEditTriggers(QAbstractItemView.NoEditTriggers)
# Graphic effect
glow = QGraphicsDropShadowEffect(self)
glow.setOffset(0)
glow.setBlurRadius(9)
glow.setColor(QColor(99, 255, 255))
self.table.setGraphicsEffect(glow)
glow.setEnabled(True)
processes = self.generate_process_list()
self.table.setRowCount(len(processes))
for index, process in enumerate(processes):
item = QTableWidgetItem(
QIcon.fromTheme(process.name().split()[0].split('/')[0]),
process.name().split()[0].split('/')[0].strip())
item.setData(Qt.UserRole, process)
item.setToolTip("{}, {}, {}, {}".format(
process.name(), process.nice(),
process.ionice()[1], process.pid))
self.table.setItem(index, 0, item)
self.table.clicked.connect(lambda: self.sliderhdd.setDisabled(False))
self.table.clicked.connect(lambda: self.slidercpu.setDisabled(False))
self.table.clicked.connect(lambda: self.slidercpu.setValue(
int(tuple(self.table.currentItem().toolTip().split(","))[1])))
self.table.clicked.connect(lambda: self.sliderhdd.setValue(
int(tuple(self.table.currentItem().toolTip().split(","))[2])))
self.table.resizeColumnsToContents()
# self.table.resizeRowsToContents()
# sliders
self.slidercpu = QSlider()
self.slidercpu.setRange(0, 19)
self.slidercpu.setSingleStep(1)
self.slidercpu.setTickPosition(3)
self.slidercpu.setDisabled(True)
self.slidercpu.setInvertedAppearance(True)
self.slidercpu.setInvertedControls(True)
self.slidercpu.valueChanged.connect(self.set_cpu_value)
self.slidercpu.valueChanged.connect(
lambda: self.slidercpu.setToolTip(str(self.slidercpu.value())))
# Timer to start
self.slidercpu_timer = QTimer(self)
self.slidercpu_timer.setSingleShot(True)
self.slidercpu_timer.timeout.connect(self.on_slidercpu_timer_timeout)
QLabel(self.slidercpu).setPixmap(
QIcon.fromTheme("list-add").pixmap(16))
QVBoxLayout(group1).addWidget(self.slidercpu)
self.sliderhdd = QSlider()
self.sliderhdd.setRange(0, 7)
self.sliderhdd.setSingleStep(1)
self.sliderhdd.setTickPosition(3)
self.sliderhdd.setDisabled(True)
self.sliderhdd.setInvertedAppearance(True)
self.sliderhdd.setInvertedControls(True)
self.sliderhdd.valueChanged.connect(self.set_hdd_value)
self.sliderhdd.valueChanged.connect(
lambda: self.sliderhdd.setToolTip(str(self.sliderhdd.value())))
# Timer to start
self.sliderhdd_timer = QTimer(self)
self.sliderhdd_timer.setSingleShot(True)
self.sliderhdd_timer.timeout.connect(self.on_sliderhdd_timer_timeout)
QLabel(self.sliderhdd).setPixmap(
QIcon.fromTheme("list-add").pixmap(16))
QVBoxLayout(group2).addWidget(self.sliderhdd)
QVBoxLayout(group0).addWidget(self.table)
def set_cpu_value(self):
"""Set the CPU value."""
if self.slidercpu_timer.isActive():
self.slidercpu_timer.stop()
self.slidercpu_timer.start(1000)
def set_hdd_value(self):
"""Set the Disk value."""
if self.sliderhdd_timer.isActive():
self.sliderhdd_timer.stop()
self.sliderhdd_timer.start(1000)
def on_slidercpu_timer_timeout(self):
"""What to do on slider timer time out."""
pid = int(tuple(self.table.currentItem().toolTip().split(","))[3])
psutil.Process(pid).nice(self.slidercpu.value())
nice_result = 'Nice before: {},nice after: {}.'.format(
psutil.Process(pid).nice(), psutil.Process(pid).nice())
self.statusBar().showMessage(nice_result, 5000)
log.info(nice_result)
def on_sliderhdd_timer_timeout(self):
"""What to do on slider timer time out."""
pid = int(tuple(self.table.currentItem().toolTip().split(","))[3])
ionice_before = psutil.Process(pid).ionice()
psutil.Process(pid).ionice(
2 if self.sliderhdd.value() < 7 else 0,
self.sliderhdd.value() if self.sliderhdd.value() < 7 else None)
nice_result = 'ionice before: {}, ionice after: {}'.format(
ionice_before, psutil.Process(pid).ionice())
self.statusBar().showMessage(nice_result, 5000)
log.info(nice_result)
def center(self):
"""Center Window on the Current Screen,with Multi-Monitor support."""
window_geometry = self.frameGeometry()
mousepointer_position = QApplication.desktop().cursor().pos()
screen = QApplication.desktop().screenNumber(mousepointer_position)
centerPoint = QApplication.desktop().screenGeometry(screen).center()
window_geometry.moveCenter(centerPoint)
self.move(window_geometry.topLeft())
def move_to_mouse_position(self):
"""Center the Window on the Current Mouse position."""
window_geometry = self.frameGeometry()
window_geometry.moveCenter(QApplication.desktop().cursor().pos())
self.move(window_geometry.topLeft())
def closeEvent(self, event):
"""Ask to Quit."""
the_conditional_is_true = QMessageBox.question(
self, __doc__.title(), 'Quit ?.', QMessageBox.Yes | QMessageBox.No,
QMessageBox.No) == QMessageBox.Yes
event.accept() if the_conditional_is_true else event.ignore()
def generate_process_list(self):
"""Return a list of processes."""
return [p for p in psutil.process_iter() if p.username() == getuser()]
###############################################################################
def main():
"""Main Loop."""
APPNAME = str(__package__ or __doc__)[:99].lower().strip().replace(" ", "")
if not sys.platform.startswith("win") and sys.stderr.isatty():
def add_color_emit_ansi(fn):
"""Add methods we need to the class."""
def new(*args):
"""Method overload."""
if len(args) == 2:
new_args = (args[0], copy(args[1]))
else:
new_args = (args[0], copy(args[1]), args[2:])
if hasattr(args[0], 'baseFilename'):
return fn(*args)
levelno = new_args[1].levelno
if levelno >= 50:
color = '\x1b[31m' # red
elif levelno >= 40:
color = '\x1b[31m' # red
elif levelno >= 30:
color = '\x1b[33m' # yellow
elif levelno >= 20:
color = '\x1b[32m' # green
elif levelno >= 10:
color = '\x1b[35m' # pink
else:
color = '\x1b[0m' # normal
try:
new_args[1].msg = color + str(new_args[1].msg) + '\x1b[0m'
except Exception as reason:
print(reason) # Do not use log here.
return fn(*new_args)
return new
# all non-Windows platforms support ANSI Colors so we use them
log.StreamHandler.emit = add_color_emit_ansi(log.StreamHandler.emit)
log.basicConfig(level=-1, format="%(levelname)s:%(asctime)s %(message)s")
log.getLogger().addHandler(log.StreamHandler(sys.stderr))
try:
os.nice(19) # smooth cpu priority
libc = cdll.LoadLibrary('libc.so.6') # set process name
buff = create_string_buffer(len(APPNAME) + 1)
buff.value = bytes(APPNAME.encode("utf-8"))
libc.prctl(15, byref(buff), 0, 0, 0)
except Exception as reason:
log.warning(reason)
signal.signal(signal.SIGINT, signal.SIG_DFL) # CTRL+C work to quit app
application = QApplication(sys.argv)
application.setApplicationName(__doc__.strip().lower())
application.setOrganizationName(__doc__.strip().lower())
application.setOrganizationDomain(__doc__.strip())
application.setWindowIcon(QIcon.fromTheme("preferences-system"))
try:
opts, args = getopt(sys.argv[1:], 'hv', ('version', 'help'))
except:
pass
for o, v in opts:
if o in ('-h', '--help'):
print(''' Usage:
-h, --help Show help informations and exit.
-v, --version Show version information and exit.''')
return sys.exit(0)
elif o in ('-v', '--version'):
print(__version__)
return sys.exit(0)
mainwindow = MainWindow()
mainwindow.show()
sys.exit(application.exec_())
if __name__ in '__main__':
main()