PyQt5无边框窗口边框可拖动调节窗口大小 双击最大化还原

from PyQt5.QtWidgets import QWidget, QVBoxLayout, QHBoxLayout, QLabel, QPushButton, QGraphicsDropShadowEffect from PyQt5.QtCore import Qt, QPoint, QEvent from PyQt5.QtGui import QColor class pywidget(QWidget): def __init__(self): QWidget.__init__(self) # 对象声明 self.shadowWidget = QWidget() self.shadowLayout = QVBoxLayout() self.shadow = QGraphicsDropShadowEffect() self.shadowColor = QColor(0, 0, 0) self.titleBarWidget = QWidget() self.titleBarLayout = QHBoxLayout() self.titleLabel = QLabel() self.minButton = QPushButton() self.maxButton = QPushButton() self.quitButton = QPushButton() self.mainLayout = QVBoxLayout() self.mainWidget = QWidget() # 设置窗口属性 self.setFixedSize(800, 600) self.setWindowFlag(Qt.FramelessWindowHint) self.setAttribute(Qt.WA_TranslucentBackground) self.installEventFilter(self) self.setMouseTracking(True) self.shadowLayout.addWidget(self.shadowWidget) self.shadowLayout.setContentsMargins(9, 9, 9, 9) self.shadowLayout.setSpacing(0) self.setLayout(self.shadowLayout) self.shadowWidget.setLayout(self.mainLayout) self.shadowWidget.setGraphicsEffect(self.shadow) self.shadowWidget.installEventFilter(self) self.shadowWidget.setMouseTracking(True) self.shadow.setBlurRadius(9) self.shadowColor.setAlpha(100) self.shadow.setColor(self.shadowColor) self.shadow.setOffset(0) # 标题栏窗体 self.titleBarWidget.setLayout(self.titleBarLayout) self.titleBarWidget.setFixedHeight(31) self.titleBarWidget.installEventFilter(self) self.titleBarWidget.setMouseTracking(True) self.titleBarWidget.setObjectName("titleBarWidget") self.titleBarWidget.setStyleSheet("#titleBarWidget{background-color: rgb(50, 50, 50); border-top: 1px solid; border-right: 1px solid; border-left: 1px solid; \ border-color: rgba(200,200,200,50); border-top-right-radius:2px; border-top-left-radius:2px;}") # 标题栏布局 self.titleBarLayout.setContentsMargins(0, 0, 0, 0) self.titleBarLayout.setSpacing(0) self.titleBarLayout.addWidget(self.titleLabel) self.titleBarLayout.addWidget(self.minButton) self.titleBarLayout.addWidget(self.maxButton) self.titleBarLayout.addWidget(self.quitButton) # 标题标签 self.titleLabel.setText(" 窗口") self.titleLabel.setStyleSheet('QLabel{font: 10pt "微软雅黑"; color: rgb(121, 116, 127)}') self.titleLabel.setFixedHeight(31) self.titleLabel.setMouseTracking(True) # 标题栏按钮 self.minButton.setFixedSize(35, 31) self.minButton.setText("0") self.minButton.setMouseTracking(True) self.minButton.clicked.connect(self.minButton_clicked) self.minButton.setStyleSheet('QPushButton {font: 10pt "Marlett"; border:none; background-color: rgba(204, 204, 204, 0); color: rgb(121, 116, 127);}\ QPushButton:hover{background-color: rgba(255, 255, 255, 10);}\ QPushButton:pressed{background-color: rgba(255, 255, 255, 20);}') self.maxButton.setFixedSize(35, 31) self.maxButton.setText("1") self.maxButton.setMouseTracking(True) self.maxButton.clicked.connect(self.maxButton_clicked) self.maxButton.setStyleSheet('QPushButton {font: 10pt "Marlett"; background-color: rgba(204, 204, 204, 0); color: rgb(121, 116, 127); border-top: 2px solid; border-color: rgba(200,200,200,0);}\ QPushButton:hover{background-color: rgba(255, 255, 255, 10);}\ QPushButton:pressed{background-color: rgba(255, 255, 255, 20);}') self.quitButton.setFixedSize(35, 31) self.quitButton.setText("r") self.quitButton.setMouseTracking(True) self.quitButton.clicked.connect(self.quitButton_clicked) self.quitButton.setStyleSheet('QPushButton {font: 10pt "Marlett"; background-color: rgba(204, 204, 204, 0); color: rgb(121, 116, 127); border-top-right-radius: 2px; \ border-top: 1px solid; border-right: 1px solid; border-color: rgba(200,200,200,0);}\ QPushButton:hover{background-color: rgb(244, 84, 84); color: rgb(255, 255, 255); border-color: rgba(200,200,200,50);} \ QPushButton:pressed{background-color: rgb(220, 72, 72);}') self.mainLayout.setContentsMargins(0, 0, 0, 0) self.mainLayout.setSpacing(0) self.mainLayout.addWidget(self.titleBarWidget) self.mainLayout.addWidget(self.mainWidget) self.mainWidget.setMouseTracking(True) self.mainWidget.setStyleSheet("QWidget{background-color: rgb(57, 58, 60); border-bottom: 1px solid; border-right: 1px solid; border-left: 1px solid; \ border-color: rgba(200,200,200,50); border-bottom-right-radius:2px; border-bottom-left-radius:2px;}") self.dragMode = '' def eventFilter(self, watched, event): # 监听标题栏事件 #print("watched", event.type()) if watched == self.titleBarWidget: if event.type() == QEvent.MouseButtonDblClick: if self.isMaximized(): self.showNormal() else: self.showMaximized() if event.type() == QEvent.MouseButtonPress: self.clickPos = event.globalPos() - self.pos() if event.type() == QEvent.MouseMove: if event.buttons() == Qt.LeftButton and self.clickPos and not self.isMaximized(): self.move(event.globalPos() - self.clickPos) elif event.buttons() == Qt.LeftButton and self.clickPos and self.isMaximized(): maxWidth = self.width() self.showNormal() if self.width() - maxWidth + self.clickPos.x() <= 0 and self.width() - self.clickPos.x() - 35 * 3 <= 0: self.clickPos.setX(self.width()/2) elif self.width() - maxWidth + self.clickPos.x() > 0: self.clickPos.setX(self.width() - maxWidth + self.clickPos.x()) elif self.width() - self.clickPos.x() - 35 * 3 > 0: self.clickPos.setX(self.clickPos.x()+9) self.clickPos.setY(self.clickPos.y() + 11) if event.type() == QEvent.MouseButtonRelease: self.clickPos = QPoint() if watched == self: if event.type() == QEvent.MouseButtonPress: self.dragPos = event.globalPos() self.dragWidth = self.width() self.dragHeight = self.height() if not self.isMaximized(): self.mousePos = event.globalPos() - self.pos() if self.width() - 10 <= self.mousePos.x() <= self.width() - 5: if self.height() - 10 <= self.mousePos.y() <= self.height() - 5: self.dragMode = 'rb' elif 5 <= self.mousePos.y() <= 10: self.dragMode = 'rt' else: self.dragMode = 'r' elif 5 <= self.mousePos.x() <= 10: if self.height() - 10 <= self.mousePos.y() <= self.height() - 5: self.dragMode = 'lb' elif 5 <= self.mousePos.y() <= 10: self.dragMode = 'lt' else: