使用pyqt实现的一个自定义标题栏窗体

#!/usr/bin/env python # -*- coding:utf-8 -*- # Author: jyroy import sys from PyQt5.QtWidgets import QApplication, QMenuBar, QAction, QTabWidget, QGroupBox, QPlainTextEdit from PyQt5.QtCore import Qt, pyqtSignal, QPoint, QSize from PyQt5.QtGui import QFont, QEnterEvent, QPainter, QColor, QPen, QIcon from PyQt5.QtWidgets import QWidget, QVBoxLayout, QHBoxLayout, QLabel, QSpacerItem, QSizePolicy, QPushButton, QTextEdit class TitleBar(QWidget): # 窗口最小化信号 windowMinimumed = pyqtSignal() # 窗口最大化信号 windowMaximumed = pyqtSignal() # 窗口还原信号 windowNormaled = pyqtSignal() # 窗口关闭信号 windowClosed = pyqtSignal() # 窗口移动 windowMoved = pyqtSignal(QPoint) def __init__(self, *args, **kwargs): super(TitleBar, self).__init__(*args, **kwargs) # 支持qss设置背景 self.setAttribute(Qt.WA_StyledBackground, True) self.mPos = None self.iconSize = 20 # 图标的默认大小 # 设置默认背景颜色,否则由于受到父窗口的影响导致透明 self.setAutoFillBackground(True) palette = self.palette() palette.setColor(palette.Window, QColor('#1e1d23')) self.setPalette(palette) # 布局 layout = QHBoxLayout(self, spacing=0) layout.setContentsMargins(0, 0, 0, 0) # 窗口图标 self.iconLabel = QLabel(self) layout.addWidget(self.iconLabel) layout.addSpacerItem(QSpacerItem(40, 20, QSizePolicy.Expanding, QSizePolicy.Minimum)) # 窗口标题 self.titleLabel = QLabel(self) self.titleLabel.setMargin(2) self.titleLabel.setAlignment(Qt.AlignCenter) layout.addWidget(self.titleLabel) # 中间伸缩条 layout.addSpacerItem(QSpacerItem(40, 20, QSizePolicy.Expanding, QSizePolicy.Minimum)) # 利用Webdings字体来显示最小化、最大化、关闭图标 font = self.font() or QFont() font.setFamily('Webdings') # 最小化按钮 self.buttonMinimum = QPushButton('0', self, clicked=self.windowMinimumed.emit, font=font, objectName='buttonMinimum') layout.addWidget(self.buttonMinimum) # 最大化/还原按钮 self.buttonMaximum = QPushButton('1', self, clicked=self.showMaximized, font=font, objectName='buttonMaximum') layout.addWidget(self.buttonMaximum) # 关闭按钮 self.buttonClose = QPushButton('r', self, clicked=self.windowClosed.emit, font=font, objectName='buttonClose') layout.addWidget(self.buttonClose) # 初始高度 self.setHeight() def showMaximized(self): if self.buttonMaximum.text() == '1': # 最大化 self.buttonMaximum.setText('2') self.windowMaximumed.emit() else: # 还原 self.buttonMaximum.setText('1') self.windowNormaled.emit() def setHeight(self, height=38): """设置标题栏高度""" self.setMinimumHeight(height) self.setMaximumHeight(height) # 设置右边按钮的大小 self.buttonMinimum.setMinimumSize(height, height) self.buttonMinimum.setMaximumSize(height, height) self.buttonMaximum.setMinimumSize(height, height) self.buttonMaximum.setMaximumSize(height, height) self.buttonClose.setMinimumSize(height, height) self.buttonClose.setMaximumSize(height, height) def setTitle(self, title): """设置标题""" self.titleLabel.setText(title) def setIcon(self, icon): """设置图标""" self.iconLabel.setPixmap(icon.pixmap(self.iconSize, self.iconSize)) def setIconSize(self, size): """设置图标大小""" self.iconSize = size def enterEvent(self, event): self.setCursor(Qt.ArrowCursor) super(TitleBar, self).enterEvent(event) def mouseDoubleClickEvent(self, event): super(TitleBar, self).mouseDoubleClickEvent(event) self.showMaximized() def mousePressEvent(self, event): """鼠标点击事件""" if event.button() == Qt.LeftButton: self.mPos = event.pos() event.accept() def mouseReleaseEvent(self, event): '''鼠标弹起事件''' self.mPos = None event.accept() def mouseMoveEvent(self, event): if event.buttons() == Qt.LeftButton and self.mPos: self.windowMoved.emit(self.mapToGlobal(event.pos() - self.mPos)) event.accept() # 枚举左上右下以及四个定点 Left, Top, Right, Bottom, LeftTop, RightTop, LeftBottom, RightBottom = range(8) class CustomizeTitleWindow(QWidget): # 四周边距 Margins = 5 def __init__(self, *args, **kwargs): super(CustomizeTitleWindow, self).__init__(*args, **kwargs) self._pressed = False self.Direction = None # 背景透明 self.setAttribute(Qt.WA_TranslucentBackground, True) # 无边框 self.setWindowFlags(Qt.FramelessWindowHint) # 隐藏边框 # 鼠标跟踪 self.setMouseTracking(True) # 布局 layout = QVBoxLayout(self, spacing=0) # 预留边界用于实现无边框窗口调整大小 layout.setContentsMargins(self.Margins, self.Margins, self.Margins, self.Margins) # 标题栏 self.titleBar = TitleBar(self) layout.addWidget(self.titleBar) # 信号槽 self.titleBar.windowMinimumed.connect(self.showMinimized) self.titleBar.windowMaximumed.connect(self.showMaximized) self.titleBar.windowNormaled.connect(self.showNormal) self.titleBar.windowClosed.connect(self.close) self.titleBar.windowMoved.connect(self.move) self.windowTitleChanged.connect(self.titleBar.setTitle) self.windowIconChanged.connect(self.titleBar.setIcon) self.setTitleBarHeight(32) self.setIconSize(24) def setTitleBarHeight(self, height=32): """设置标题栏高度""" self.titleBar.setHeight(height) def setIconSize(self, size): """设置图标的大小""" self.titleBar.setIconSize(size) def setWidget(self, widget): """设置自己的控件""" if hasattr(self, '_widget'): return self._widget = widget # 设置默认背景颜色,否则由于受到父窗口的影响导致透明 self._widget.setAutoFillBackground(True) palette = self._widget.palette() palette.setColor(palette.Window, QColor('#1e1d23')) self._widget.setPalette(palette) self._widget.installEventFilter(self) self.layout().addWidget(self._widget) def move(self, pos): if self.windowState() == Qt.WindowMaximized or self.windowState() == Qt.WindowFullScreen: # 最大化或者全屏则不允许移动 return super(CustomizeTitleWindow, self).move(pos) def showMaximized(self): """最大化,要去除上下左右边界,如果不去除则边框地方会有空隙""" super(CustomizeTitleWindow, self).showMaximized() self.layout().setContentsMargins(0, 0, 0, 0) def showNormal(self): """还原,要保留上下左右边界,否则没有边框无法调整""" super(CustomizeTitleWindow, self).showNormal() self.layout().setContentsMargins( self.Margins, self.Margins, self.Margins, self.Margins) def eventFilter(self, obj, event): """事件过滤器,用于解决鼠标进入其它控件后还原为标准鼠标样式""" if isinstance(event, QEnterEvent): self.setCursor(Qt.ArrowCursor) return super(CustomizeTitleWindow, self).eventFilter(obj, event) def paintEven