在 QSystemTrayIcon 中实现 Popup 映射答案

【问题标题】：Implement Popup mapping in QSystemTrayIcon在 QSystemTrayIcon 中实现 Popup 映射
【发布时间】：2020-05-11 00:05:44
【问题描述】：

我想实现弹出窗口的行为，就像 Windows 10 中的默认音量控制器一样。单击图标，窗口打开或关闭；如果窗口已打开，单击外部将关闭窗口。我该如何实现？

之前，我发现小部件可以覆盖按下和释放鼠标键的方法，但是这里没有找到，或者搜索不佳。请帮帮我。

import sys
from PyQt5.QtWidgets import QApplication, QMainWindow, QLabel, QGridLayout, \
                            QWidget, QSystemTrayIcon, QStyle, qApp
import PyQt5.QtCore


class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()

        self.setMinimumSize(PyQt5.QtCore.QSize(600, 130))
        self.setMaximumSize(PyQt5.QtCore.QSize(600, 130))

        self.setWindowFlags(PyQt5.QtCore.Qt.Popup)

        screen_geometry = QApplication.desktop().availableGeometry()
        screen_size = (screen_geometry.width(), screen_geometry.height())
        win_size = (self.frameSize().width(), self.frameSize().height())
        x = screen_size[0] - win_size[0]
        y = screen_size[1] - win_size[1]
        self.move(x, y)
        self.setWindowOpacity(0.85)
        self.setWindowTitle("System Tray Application")
        central_widget = QWidget(self)
        self.setCentralWidget(central_widget)

        grid_layout = QGridLayout(central_widget)
        grid_layout.addWidget(QLabel("Application, which can minimize to tray",
                                     self), 0, 0)

        self.tray_icon = QSystemTrayIcon(self)
        self.tray_icon.setIcon(self.
                               style().standardIcon(QStyle.SP_ComputerIcon))
        self.tray_icon.activated.connect(self.trigger)
        self.tray_icon.show()

        self.setGeometry(500, 570, 600, 130)
        self.fl = False

    def trigger(self, reason):
        if reason == QSystemTrayIcon.MiddleClick:
            qApp.quit()
        elif reason == QSystemTrayIcon.Trigger:
            if not self.fl:
                self.show()
            else:
                self.hide()
            self.fl = not self.fl
        elif reason == 1:
            self.fl = False

    # def mouseReleaseEvent(self, event):
    #     self.hide()
    #     self.fl = False


if __name__ == "__main__":
    app = QApplication(sys.argv)
    mw = MainWindow()
    mw.show()
    sys.exit(app.exec())

【问题讨论】：

标签： python pyqt pyqt5 qsystemtrayicon

【解决方案1】：

如果要切换可见性，则必须使用 setVisible() 和 isVisible() 方法：

import sys

from PyQt5.QtWidgets import (
    QApplication,
    QGridLayout,
    QLabel,
    QMainWindow,
    QStyle,
    QSystemTrayIcon,
    QWidget,
)
from PyQt5.QtCore import Qt, QSize


class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()

        self.setFixedSize(600, 130)

        self.setWindowFlag(Qt.Popup)

        self.setWindowOpacity(0.85)
        self.setWindowTitle("System Tray Application")
        central_widget = QWidget()
        self.setCentralWidget(central_widget)

        grid_layout = QGridLayout(central_widget)
        grid_layout.addWidget(QLabel("Application, which can minimize to tray"), 0, 0)

        self.tray_icon = QSystemTrayIcon(self)
        self.tray_icon.setIcon(self.style().standardIcon(QStyle.SP_ComputerIcon))
        self.tray_icon.activated.connect(self.trigger)
        self.tray_icon.show()

        self.setGeometry(
            QStyle.alignedRect(
                Qt.LeftToRight,
                Qt.AlignBottom | Qt.AlignRight,
                self.window().size(),
                QApplication.desktop().availableGeometry(),
            )
        )

    def trigger(self, reason):
        if reason == QSystemTrayIcon.MiddleClick:
            QApplication.quit()
        elif reason == QSystemTrayIcon.Trigger:
            self.setVisible(not self.isVisible())


if __name__ == "__main__":
    app = QApplication(sys.argv)
    mw = MainWindow()
    mw.show()
    sys.exit(app.exec())

【讨论】：