#!/usr/bin/python3
# -*- coding: utf-8 -*-

import sys
from PyQt5.QtWidgets import (QWidget, QToolTip, QDesktopWidget, QPushButton, QMessageBox, QApplication)
from PyQt5.QtGui import QFontDatabase, QIcon, QFont
from PyQt5 import QtCore, QtGui
from PyQt5.Qt import *

class PortablePony(QWidget):

    def __init__(self):
        super().__init__()

        self.initUI()


    def initUI(self, parent=None):
        QToolTip.setFont(QFont('SansSerif', 10))
        QWidget.__init__(self, parent)
        self.setWindowFlags(Qt.FramelessWindowHint)
        self.setToolTip('Портативная поняшка')
        self.resize(300, 250)
        pixmap = QtGui.QPixmap("pinkie.png")
        pal = self.palette()
        pal.setBrush(QtGui.QPalette.Normal, QtGui.QPalette.Window, QtGui.QBrush(pixmap))
        pal.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.Window, QtGui.QBrush(pixmap))
        self.setPalette(pal)
        self.setMask(pixmap.mask())
        self.left_bottom()
        self.setWindowIcon(QIcon('icon.png'))

        self.show()

    def left_bottom(self):
        qr = self.frameGeometry()
        cp = QDesktopWidget().availableGeometry().bottomLeft()
        qr.moveCenter(cp)
        self.move(qr.topLeft())

    def closeEvent(self, event):
        reply = QMessageBox.question(self, 'Message',
            "Закрыть Портативную поняшку?", QMessageBox.Yes |
            QMessageBox.No, QMessageBox.No)

        if reply == QMessageBox.Yes:
            event.accept()
        else:
            event.ignore()

    def mousePressEvent(self, event):
        self.offset = event.pos()

    def mouseMoveEvent(self, event):
        x=event.globalX()
        y=event.globalY()
        x_w = self.offset.x()
        y_w = self.offset.y()
        self.move(x-x_w, y-y_w)

if __name__ == '__main__':

    app = QApplication(sys.argv)
    pony = PortablePony()
    sys.exit(app.exec_())