59 lines
2.2 KiB
Python
59 lines
2.2 KiB
Python
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""
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Created on 2021/4/13
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@author: Irony
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@site: https://github.com/PyQt5
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@email: 892768447@qq.com
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@file: ScreenNotify
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@description: 屏幕、分辨率、DPI变化通知
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"""
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import sys
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from PyQt5.QtCore import QTimer, QRect
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from PyQt5.QtWidgets import QApplication, QPlainTextEdit, qApp
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class Window(QPlainTextEdit):
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def __init__(self, *args, **kwargs):
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super(Window, self).__init__(*args, **kwargs)
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self.appendPlainText('修改分辨率后查看')
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# 记录最后一次的值（减少槽调用）
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self.m_rect = QRect()
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# 使用定时器来延迟触发最后一次变化
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self.m_timer = QTimer(self, timeout=self.onSolutionChanged)
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self.m_timer.setSingleShot(True) # **重要** 保证多次信号尽量少的调用函数
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# 主要是多屏幕->无屏幕->有屏幕
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qApp.primaryScreenChanged.connect(lambda _: self.m_timer.start(1000))
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# 其它信号最终基本上都会调用该信号
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qApp.primaryScreen().virtualGeometryChanged.connect(lambda _: self.m_timer.start(1000))
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# DPI变化
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qApp.primaryScreen().logicalDotsPerInchChanged.connect(lambda _: self.m_timer.start(1000))
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def onSolutionChanged(self):
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# 获取主屏幕
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screen = qApp.primaryScreen()
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if self.m_rect == screen.availableVirtualGeometry():
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return
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self.m_rect = screen.availableVirtualGeometry()
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# 所有屏幕可用大小
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self.appendPlainText('\navailableVirtualGeometry: {0}'.format(str(screen.availableVirtualGeometry())))
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# 获取所有屏幕
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screens = qApp.screens()
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for screen in screens:
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self.appendPlainText(
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'screen: {0}, geometry({1}), availableGeometry({2}), logicalDotsPerInch({3}), '
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'physicalDotsPerInch({4}), refreshRate({5})'.format(
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screen.name(), screen.geometry(), screen.availableGeometry(), screen.logicalDotsPerInch(),
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screen.physicalDotsPerInch(), screen.refreshRate()))
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if __name__ == '__main__':
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app = QApplication(sys.argv)
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w = Window()
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w.show()
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sys.exit(app.exec_())
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