屏幕变化监听

Demo/README.md

@@ -23,6 +23,7 @@
   - [判断信号是否连接](#20判断信号是否连接)
   - [调用虚拟键盘](#21调用虚拟键盘)
   - [动态忙碌光标](#22动态忙碌光标)
+  - [屏幕变动监听](#23屏幕变动监听)
 
 ## 1、重启窗口Widget
 [运行 RestartWindow.py](RestartWindow.py)
@@ -223,4 +224,11 @@ PyQt 结合 Opencv 进行人脸检测；
 
 通过定时器不停的修改光标图片来实现动态效果
 
-![GifCursor](ScreenShot/GifCursor.gif)
+![GifCursor](ScreenShot/GifCursor.gif)
+
+## 23、屏幕变动监听
+[运行 ScreenNotify.py](ScreenNotify.py)
+
+通过定时器减少不同的变化信号，尽量保证只调用一次槽函数来获取信息
+
+![ScreenNotify](ScreenShot/ScreenNotify.png)

Demo/ScreenNotify.py

@@ -0,0 +1,58 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+"""
+Created on 2021/4/13
+@author: Irony
+@site: https://github.com/PyQt5
+@email: 892768447@qq.com
+@file: ScreenNotify
+@description: 屏幕、分辨率、DPI变化通知
+"""
+import sys
+
+from PyQt5.QtCore import QTimer, QRect
+from PyQt5.QtWidgets import QApplication, QPlainTextEdit, qApp
+
+
+class Window(QPlainTextEdit):
+
+    def __init__(self, *args, **kwargs):
+        super(Window, self).__init__(*args, **kwargs)
+        self.appendPlainText('修改分辨率后查看')
+        # 记录最后一次的值（减少槽调用）
+        self.m_rect = QRect()
+        # 使用定时器来延迟触发最后一次变化
+        self.m_timer = QTimer(self, timeout=self.onSolutionChanged)
+        self.m_timer.setSingleShot(True)  # **重要** 保证多次信号尽量少的调用函数
+
+        # 主要是多屏幕->无屏幕->有屏幕
+        qApp.primaryScreenChanged.connect(lambda _: self.m_timer.start(1000))
+        # 其它信号最终基本上都会调用该信号
+        qApp.primaryScreen().virtualGeometryChanged.connect(lambda _: self.m_timer.start(1000))
+        # DPI变化
+        qApp.primaryScreen().logicalDotsPerInchChanged.connect(lambda _: self.m_timer.start(1000))
+
+    def onSolutionChanged(self):
+        # 获取主屏幕
+        screen = qApp.primaryScreen()
+        if self.m_rect == screen.availableVirtualGeometry():
+            return
+        self.m_rect = screen.availableVirtualGeometry()
+        # 所有屏幕可用大小
+        self.appendPlainText('\navailableVirtualGeometry: {0}'.format(str(screen.availableVirtualGeometry())))
+        # 获取所有屏幕
+        screens = qApp.screens()
+        for screen in screens:
+            self.appendPlainText(
+                'screen: {0}, geometry({1}), availableGeometry({2}), logicalDotsPerInch({3}), '
+                'physicalDotsPerInch({4}), refreshRate({5})'.format(
+                    screen.name(), screen.geometry(), screen.availableGeometry(), screen.logicalDotsPerInch(),
+                    screen.physicalDotsPerInch(), screen.refreshRate()))
+
+
+if __name__ == '__main__':
+    app = QApplication(sys.argv)
+    w = Window()
+    w.show()
+    sys.exit(app.exec_())

QtRemoteObjects/SyncUi/ClipboardMaster.py

@@ -0,0 +1,105 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+"""
+Created on 2020/7/31
+@author: Irony
+@site: https://pyqt.site https://github.com/PyQt5
+@email: 892768447@qq.com
+@file: ClipboardMaster
+@description: 
+"""
+from PyQt5.QtCore import QUrl, pyqtSlot, pyqtSignal, QLoggingCategory, QVariant, QMimeData
+from PyQt5.QtRemoteObjects import QRemoteObjectHost
+from PyQt5.QtWidgets import QTextBrowser
+
+__Author__ = 'Irony'
+__Copyright__ = 'Copyright (c) 2019 Irony'
+__Version__ = 1.0
+
+import sys
+
+
+class WindowMaster(QTextBrowser):
+    SignalUpdateMimeData = pyqtSignal(
+        bool, QVariant,  # color
+        bool, QVariant,  # html
+        bool, QVariant,  # image
+        bool, QVariant,  # text
+        bool, QVariant,  # urls
+    )
+
+    def __init__(self, *args, **kwargs):
+        super(WindowMaster, self).__init__(*args, **kwargs)
+        # 监听剪切板
+        # clipboard = QApplication.clipboard()
+        # clipboard.dataChanged.connect(self.on_data_changed)
+        # 开启节点
+        host = QRemoteObjectHost(QUrl('tcp://0.0.0.0:' + sys.argv[1]), parent=self)
+        host.enableRemoting(self, 'WindowMaster')
+        self.append('开启节点完成')
+
+    def on_data_changed(self):
+        # 服务端剪贴板变化后发送到客户端
+        clipboard = QApplication.clipboard()
+        clipboard.blockSignals(True)
+        mime_data = clipboard.mimeData()
+        self.SignalUpdateMimeData.emit(
+            mime_data.hasColor(), mime_data.colorData(),
+            mime_data.hasHtml(), mime_data.html(),
+            mime_data.hasImage(), mime_data.imageData(),
+            mime_data.hasText(), mime_data.text(),
+            mime_data.hasUrls(), mime_data.urls(),
+        )
+        clipboard.blockSignals(False)
+
+    @pyqtSlot(
+        bool, QVariant,  # color
+        bool, QVariant,  # html
+        bool, QVariant,  # image
+        bool, QVariant,  # text
+        bool, QVariant,  # urls
+        bool, QVariant  # files
+    )
+    def updateMimeData(self,
+                       hasColor, color,
+                       hasHtml, html,
+                       hasImage, image,
+                       hasText, text,
+                       hasUrls, urls,
+                       hasFiles, files,
+                       ):
+        # 客户端剪切板同步到服务端
+        self.append('收到客户端发送的剪贴板')
+        clipboard = QApplication.clipboard()
+        clipboard.blockSignals(True)
+        data = QMimeData()
+        if hasColor:
+            data.setColorData(color)
+        if hasHtml:
+            data.setHtml(html)
+        if hasImage:
+            data.setImageData(image)
+        if hasText:
+            data.setText(text)
+        # if hasUrls:
+        #     data.setUrls(urls)
+        if hasFiles:
+            data.setData('')
+        clipboard.setMimeData(data)
+        clipboard.blockSignals(False)
+
+
+if __name__ == '__main__':
+    import cgitb
+
+    cgitb.enable(1, None, 5, '')
+    from PyQt5.QtWidgets import QApplication
+
+    QLoggingCategory.setFilterRules('qt.remoteobjects.debug=true\n'
+                                    'qt.remoteobjects.warning=true')
+
+    app = QApplication(sys.argv)
+    w = WindowMaster()
+    w.show()
+    sys.exit(app.exec_())

QtRemoteObjects/SyncUi/ClipboardSlave.py

@@ -0,0 +1,107 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+"""
+Created on 2020/7/31
+@author: Irony
+@site: https://pyqt.site https://github.com/PyQt5
+@email: 892768447@qq.com
+@file: ClipboardSlave
+@description: 
+"""
+from PyQt5.QtCore import QUrl, pyqtSignal, QVariant, QMimeData
+from PyQt5.QtRemoteObjects import QRemoteObjectNode, QRemoteObjectReplica
+from PyQt5.QtWidgets import QTextBrowser
+
+__Author__ = 'Irony'
+__Copyright__ = 'Copyright (c) 2019 Irony'
+__Version__ = 1.0
+
+
+class WindowSlave(QTextBrowser):
+    SignalUpdateMimeData = pyqtSignal(
+        bool, QVariant,  # color
+        bool, QVariant,  # html
+        bool, QVariant,  # image
+        bool, QVariant,  # text
+        bool, QVariant,  # urls
+        bool, QVariant,  # files
+    )
+
+    def __init__(self, *args, **kwargs):
+        super(WindowSlave, self).__init__(*args, **kwargs)
+        # 监听剪切板
+        clipboard = QApplication.clipboard()
+        clipboard.dataChanged.connect(self.on_data_changed)
+        # 加入Master节点
+        node = QRemoteObjectNode(parent=self)
+        node.connectToNode(QUrl('tcp://{}:{}'.format(sys.argv[1], sys.argv[2])))
+        # 获取WindowMaster对象
+        self.windowMaster = node.acquireDynamic('WindowMaster')
+        # 初始化成功后才能去绑定信号等
+        self.windowMaster.initialized.connect(self.onInitialized)
+        # 状态改变 https://doc.qt.io/qt-5/qremoteobjectreplica.html#State-enum
+        self.windowMaster.stateChanged.connect(self.onStateChanged)
+
+    def onStateChanged(self, newState, oldState):
+        if newState == QRemoteObjectReplica.Suspect:
+            self.append('连接丢失')
+
+    def onInitialized(self):
+        self.SignalUpdateMimeData.connect(self.windowMaster.updateMimeData)
+        # self.windowMaster.SignalUpdateMimeData.connect(self.updateMimeData)
+        self.append('绑定信号槽完成')
+
+    def on_data_changed(self):
+        # 客户端剪贴板变化后发送到远程
+        print('on_data_changed')
+        clipboard = QApplication.clipboard()
+        clipboard.blockSignals(True)
+        mime_data = clipboard.mimeData()
+        files = mime_data.data('text/uri-list')
+        self.SignalUpdateMimeData.emit(
+            mime_data.hasColor(), mime_data.colorData(),
+            mime_data.hasHtml(), mime_data.html(),
+            mime_data.hasImage(), mime_data.imageData(),
+            mime_data.hasText(), mime_data.text(),
+            mime_data.hasUrls(), mime_data.urls(),
+            True if files else False, files,
+        )
+        clipboard.blockSignals(False)
+
+    def updateMimeData(self,
+                       hasColor, color,
+                       hasHtml, html,
+                       hasImage, image,
+                       hasText, text,
+                       hasUrls, urls
+                       ):
+        # 远程的剪贴板同步到客户端
+        clipboard = QApplication.clipboard()
+        clipboard.blockSignals(True)
+        data = QMimeData()
+        if hasColor:
+            data.setColorData(color)
+        if hasHtml:
+            data.setHtml(html)
+        if hasImage:
+            data.setImageData(image)
+        if hasText:
+            data.setText(text)
+        if hasUrls:
+            data.setUrls(urls)
+        clipboard.setMimeData(data)
+        clipboard.blockSignals(False)
+
+
+if __name__ == '__main__':
+    import sys
+    import cgitb
+
+    cgitb.enable(1, None, 5, '')
+    from PyQt5.QtWidgets import QApplication
+
+    app = QApplication(sys.argv)
+    w = WindowSlave()
+    w.show()
+    sys.exit(app.exec_())

README.md

@@ -253,6 +253,7 @@ https://pyqt.site 论坛是专门针对PyQt5学习和提升开设的网站，分
   - [判断信号是否连接](Demo/IsSignalConnected.py)
   - [调用虚拟键盘](Demo/CallVirtualKeyboard.py)
   - [动态忙碌光标](Demo/GifCursor.py)
+  - [屏幕变动监听](Demo/ScreenNotify.py)
 
 # QQ群
 

Test/ColumnView.py

@@ -0,0 +1,48 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+"""
+Created on 2020/9/14
+@author: Irony
+@site: https://pyqt.site https://github.com/PyQt5
+@email: 892768447@qq.com
+@file: ColumnView
+@description: 
+"""
+
+from PyQt5.QtWidgets import QComboBox, QFileSystemModel, QHBoxLayout, QSpacerItem, QSizePolicy
+
+__Author__ = 'Irony'
+__Copyright__ = 'Copyright (c) 2020'
+__Version__ = 'Version 1.0'
+
+
+class PathComboBox(QComboBox):
+
+    def __init__(self, *args, is_item=False, **kwargs):
+        super(PathComboBox, self).__init__(*args, **kwargs)
+        self.is_item = is_item
+        if not self.is_item:
+            self.setEditable(True)
+            layout = QHBoxLayout(self)
+            layout.setSpacing(0)
+            layout.setContentsMargins(0, 0, 0, 23)
+            layout.addItem(QSpacerItem(40, 20, QSizePolicy.Expanding, QSizePolicy.Minimum))
+        else:
+            self.f_model = QFileSystemModel(self)
+            self.f_model.setRootPath('')
+            self.setModel(self.f_model)
+
+    def addWidget(self, widget):
+        self.layout().insertWidget(self.layout().count()-1, widget)
+
+
+if __name__ == '__main__':
+    import sys
+    from PyQt5.QtWidgets import QApplication
+
+    app = QApplication(sys.argv)
+    w = PathComboBox()
+    w.show()
+    w.addWidget(PathComboBox(w, is_item=True))
+    sys.exit(app.exec_())