#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
Created on 2019年7月15日
@author: Irony
@site: https://pyqt5.com https://github.com/892768447
@email: 892768447@qq.com
@file: CustomWidgets.CTitleBar
@description: 自定义标题栏
"""
from PyQt5.QtCore import Qt, QPointF
from PyQt5.QtGui import QWindowStateChangeEvent, QFont, QMouseEvent
from PyQt5.QtWidgets import QWidget, QHBoxLayout, QSpacerItem, QSizePolicy, \
QLabel, QPushButton, QApplication
__Author__ = 'Irony'
__Copyright__ = 'Copyright (c) 2019'
class CTitleBar(QWidget):
Radius = 38
def __init__(self, *args, title='', **kwargs):
super(CTitleBar, self).__init__(*args, **kwargs)
self.setupUi()
# 支持设置背景
self.setAttribute(Qt.WA_StyledBackground, True)
self.mPos = None
# 找到父控件(或者自身)
self._root = self.window() # self.parent() or self
self.labelTitle.setText(title)
# 是否需要隐藏最小化或者最大化按钮
self.showMinimizeButton(self.isMinimizeable())
self.showNormalButton(False)
self.showMaximizeButton(self.isMaximizeable())
# 绑定信号
self._root.windowTitleChanged.connect(self.setWindowTitle)
self.buttonMinimum.clicked.connect(self.showMinimized)
self.buttonMaximum.clicked.connect(self.showMaximized)
self.buttonNormal.clicked.connect(self.showNormal)
self.buttonClose.clicked.connect(self._root.close)
# 对父控件(或者自身)安装事件过滤器
self._root.installEventFilter(self)
def showMinimized(self):
self._root.showMinimized()
# 强制取消hover状态
QApplication.sendEvent(self.buttonMinimum, QMouseEvent(
QMouseEvent.Leave, QPointF(), Qt.LeftButton, Qt.NoButton, Qt.NoModifier))
def showNormal(self):
self._root.showNormal()
# 强制取消hover状态
QApplication.sendEvent(self.buttonMaximum, QMouseEvent(
QMouseEvent.Leave, QPointF(), Qt.LeftButton, Qt.NoButton, Qt.NoModifier))
def showMaximized(self):
self._root.showMaximized()
# 强制取消hover状态
QApplication.sendEvent(self.buttonNormal, QMouseEvent(
QMouseEvent.Leave, QPointF(), Qt.LeftButton, Qt.NoButton, Qt.NoModifier))
def isMinimizeable(self):
"""是否可以最小化
"""
return self.testWindowFlags(Qt.WindowMinimizeButtonHint)
def isMaximizeable(self):
"""是否可以最大化
"""
return self.testWindowFlags(Qt.WindowMaximizeButtonHint)
def isResizable(self):
"""是否可调整
"""
return self._root.minimumSize() != self._root.maximumSize()
def showMinimizeButton(self, show=True):
"""显示隐藏最小化按钮
"""
self.buttonMinimum.setVisible(show)
self.widgetMinimum.setVisible(show)
def showMaximizeButton(self, show=True):
"""显示隐藏最大化按钮
"""
self.buttonMaximum.setVisible(show)
self.widgetMaximum.setVisible(show)
def showNormalButton(self, show=True):
"""显示隐藏还原按钮
"""
self.buttonNormal.setVisible(show)
self.widgetNormal.setVisible(show)
def showEvent(self, event):
super(CTitleBar, self).showEvent(event)
if not self.isResizable():
self.showMaximizeButton(False)
self.showNormalButton(False)
else:
self.showMaximizeButton(
self.isMaximizeable() and not self._root.isMaximized())
self.showNormalButton(self.isMaximizeable()
and self._root.isMaximized())
def eventFilter(self, target, event):
if isinstance(event, QWindowStateChangeEvent):
if self._root.isVisible() and not self._root.isMinimized() and \
self.testWindowFlags(Qt.WindowMinMaxButtonsHint):
# 如果当前是最大化则隐藏最大化按钮
maximized = self._root.isMaximized()
self.showMaximizeButton(not maximized)
self.showNormalButton(maximized)
# 修复最大化边距空白问题
if maximized:
self._oldMargins = self._root.layout().getContentsMargins()
self._root.layout().setContentsMargins(0, 0, 0, 0)
else:
if hasattr(self, '_oldMargins'):
self._root.layout().setContentsMargins(*self._oldMargins)
return super(CTitleBar, self).eventFilter(target, event)
def mouseDoubleClickEvent(self, event):
"""双击标题栏最大化
:param event:
"""
if not self.isMaximizeable() or not self.isResizable():
# 不能最大化或者不能调整大小
return
if self._root.isMaximized():
self._root.showNormal()
else:
self._root.showMaximized()
def mousePressEvent(self, event):
"""鼠标按下记录坐标
:param event:
"""
if event.button() == Qt.LeftButton:
self.mPos = event.pos()
def mouseReleaseEvent(self, event):
"""鼠标释放删除坐标
:param event:
"""
self.mPos = None
def mouseMoveEvent(self, event):
"""鼠标移动移动窗口
:param event:
"""
if self._root.isMaximized():
# 最大化时不可移动
return
if event.buttons() == Qt.LeftButton and self.mPos:
pos = event.pos() - self.mPos
self._root.move(self._root.pos() + pos)
def testWindowFlags(self, windowFlags):
"""判断当前窗口是否有该flags
:param windowFlags:
"""
return bool(self._root.windowFlags() & windowFlags)
def setWindowTitle(self, title):
"""设置标题
:param title:
"""
self.labelTitle.setText(title)
def setupUi(self):
"""创建UI
"""
self.setMinimumSize(0, self.Radius)
self.setMaximumSize(0xFFFFFF, self.Radius)
layout = QHBoxLayout(self)
layout.setContentsMargins(0, 0, 0, 0)
layout.setSpacing(0)
# 左侧 添加4个对应的空白占位
for name in ('widgetMinimum', 'widgetMaximum', 'widgetNormal', 'widgetClose'):
widget = QWidget(self)
widget.setMinimumSize(self.Radius, self.Radius)
widget.setMaximumSize(self.Radius, self.Radius)
widget.setObjectName('CTitleBar_%s' % name)
setattr(self, name, widget)
layout.addWidget(widget)
layout.addItem(QSpacerItem(
40, 20, QSizePolicy.Expanding, QSizePolicy.Minimum))
# 标题
self.labelTitle = QLabel(self, alignment=Qt.AlignCenter)
self.labelTitle.setObjectName('CTitleBar_labelTitle')
layout.addWidget(self.labelTitle)
layout.addItem(QSpacerItem(
40, 20, QSizePolicy.Expanding, QSizePolicy.Minimum))
# 最小化,最大化,还原,关闭按钮
for name, text in (('buttonMinimum', '0'), ('buttonMaximum', '1'),
('buttonNormal', '2'), ('buttonClose', 'r')):
button = QPushButton(text, self, font=QFont('Webdings'))
button.setMinimumSize(self.Radius, self.Radius)
button.setMaximumSize(self.Radius, self.Radius)
button.setObjectName('CTitleBar_%s' % name)
setattr(self, name, button)
layout.addWidget(button)
