# -*- coding: utf-8 -*-
import sys
from PyQt4 import QtGui
from PyQt4 import QtCore


class Icon(QtGui.QMainWindow):
    def __init__(self, parent=None):
        super(Icon, self).__init__(parent)

        # MenuBar
        menubar = self.menuBar()
        file = menubar.addMenu('文件')
        fileopen = file.addAction('打开')
        fileopen.setStatusTip('打开文件')
        filexit = file.addAction('退出')
        filexit.setShortcut('Ctrl+Q')
        self.connect(filexit, QtCore.SIGNAL('triggered()'), self.exit)
        self.setMenuBar(menubar)

        # ToolBar
        editToolbar = self.addToolBar('设置')
        newTool = editToolbar.addAction(QtGui.QIcon('new.png'), '新建')
        saveTool = editToolbar.addAction(QtGui.QIcon('save.png'), '保存')
        self.connect(saveTool, QtCore.SIGNAL('triggered()'), self.save)

        exit = QtGui.QPushButton('Exit', self)
        exit.setGeometry(30, 100, 50, 30)
        exit.setToolTip('点击按钮关闭窗口')
        self.connect(exit, QtCore.SIGNAL('clicked()'), self.exit)

        # 设置窗口大小已经位置
        self.resize(350, 250)
        self.center()

        self.statusBar().showMessage('准备就绪')
        self.setWindowIcon(QtGui.QIcon('logo.png'))
        self.setWindowTitle('PyQt4 Demo')

    def closeEvent(self, event):
        replay = QtGui.QMessageBox.question(
            self, '温馨提示', '是否确定关闭窗口', QtGui.QMessageBox.Yes, QtGui.QMessageBox.No)
        if replay == QtGui.QMessageBox.Yes:
            event.accept()
        else:
            event.ignore()

    def save(self):
        replay = QtGui.QMessageBox.question(
            self, '温馨提示', '是否进行保存', QtGui.QMessageBox.Yes, QtGui.QMessageBox.No)

    def exit(self):
        sys.exit(0)

    def center(self):
        screenGeometry = QtGui.QDesktopWidget().screenGeometry()
        size = self.geometry()
        self.move((screenGeometry.width() - size.width()) / 2,
                  (screenGeometry.height() - size.height()) / 2)


if __name__ == '__main__':
    app = QtGui.QApplication(sys.argv)
    icon = Icon()
    icon.show()
    app.exec_()