PyQt5实现无边框窗口的标题拖动和窗口缩放

网上找了半天都找不到好用的PyQt5无边框窗口的实现,借鉴部分前辈的窗口拖放代码,自己实现了一下无边框窗口,问题可能还有一点,慢慢改吧

先做个笔记

py文件

#!/usr/bin/env python

#-*- coding:utf-8 -*-

from PyQt5.QtWidgets import QWidget, QLabel, QPushButton, QVBoxLayout

from PyQt5.QtCore import Qt, QPoint

from PyQt5.QtGui import QFont, QCursor

class QTitleLabel(QLabel):

"""

新建标题栏标签类

"""

def __init__(self, *args):

super(QTitleLabel, self).__init__(*args)

self.setAlignment(Qt.AlignLeft | Qt.AlignVCenter)

self.setFixedHeight(30)

class QTitleButton(QPushButton):

"""

新建标题栏按钮类

"""

def __init__(self, *args):

super(QTitleButton, self).__init__(*args)

self.setFont(QFont("Webdings")) # 特殊字体以不借助图片实现最小化最大化和关闭按钮

self.setFixedWidth(40)

class QUnFrameWindow(QWidget):

"""

无边框窗口类

"""

def __init__(self):

super(QUnFrameWindow, self).__init__(None, Qt.FramelessWindowHint) # 设置为顶级窗口,无边框

self._padding = 5 # 设置边界宽度为5

self.initTitleLabel() # 安放标题栏标签

self.setWindowTitle = self._setTitleText(self.setWindowTitle) # 用装饰器将设置WindowTitle名字函数共享到标题栏标签上

self.setWindowTitle("UnFrameWindow")

self.initLayout() # 设置框架布局

self.setMinimumWidth(250)

self.setMouseTracking(True) # 设置widget鼠标跟踪

self.initDrag() # 设置鼠标跟踪判断默认值

def initDrag(self):

# 设置鼠标跟踪判断扳机默认值

self._move_drag = False

self._corner_drag = False

self._bottom_drag = False

self._right_drag = False

def initTitleLabel(self):

# 安放标题栏标签

self._TitleLabel = QTitleLabel(self)

self._TitleLabel.setMouseTracking(True) # 设置标题栏标签鼠标跟踪(如不设,则标题栏内在widget上层,无法实现跟踪)

self._TitleLabel.setIndent(10) # 设置标题栏文本缩进

self._TitleLabel.move(0, 0) # 标题栏安放到左上角

def initLayout(self):

# 设置框架布局

self._MainLayout = QVBoxLayout()

self._MainLayout.setSpacing(0)

self._MainLayout.addWidget(QLabel(), Qt.AlignLeft) # 顶一个QLabel在竖放框架第一行,以免正常内容挤占到标题范围里

self._MainLayout.addStretch()

self.setLayout(self._MainLayout)

def addLayout(self, QLayout):

# 给widget定义一个addLayout函数,以实现往竖放框架的正确内容区内嵌套Layout框架

self._MainLayout.addLayout(QLayout)

def _setTitleText(self, func):

# 设置标题栏标签的装饰器函数

def wrapper(*args):

self._TitleLabel.setText(*args)

return func(*args)

return wrapper

def setTitleAlignment(self, alignment):

# 给widget定义一个setTitleAlignment函数,以实现标题栏标签的对齐方式设定

self._TitleLabel.setAlignment(alignment | Qt.AlignVCenter)

def setCloseButton(self, bool):

# 给widget定义一个setCloseButton函数,为True时设置一个关闭按钮

if bool == True:

self._CloseButton = QTitleButton(b'\xef\x81\xb2'.decode("utf-8"), self)

self._CloseButton.setObjectName("CloseButton") # 设置按钮的ObjectName以在qss样式表内定义不同的按钮样式

self._CloseButton.setToolTip("关闭窗口")

self._CloseButton.setMouseTracking(True) # 设置按钮鼠标跟踪(如不设,则按钮在widget上层,无法实现跟踪)

self._CloseButton.setFixedHeight(self._TitleLabel.height()) # 设置按钮高度为标题栏高度

self._CloseButton.clicked.connect(self.close) # 按钮信号连接到关闭窗口的槽函数

def setMinMaxButtons(self, bool):

# 给widget定义一个setMinMaxButtons函数,为True时设置一组最小化最大化按钮

if bool == True:

self._MinimumButton = QTitleButton(b'\xef\x80\xb0'.decode("utf-8"), self)

self._MinimumButton.setObjectName("MinMaxButton") # 设置按钮的ObjectName以在qss样式表内定义不同的按钮样式

self._MinimumButton.setToolTip("最小化")

self._MinimumButton.setMouseTracking(True) # 设置按钮鼠标跟踪(如不设,则按钮在widget上层,无法实现跟踪)

self._MinimumButton.setFixedHeight(self._TitleLabel.height()) # 设置按钮高度为标题栏高度

self._MinimumButton.clicked.connect(self.showMinimized) # 按钮信号连接到最小化窗口的槽函数

self._MaximumButton = QTitleButton(b'\xef\x80\xb1'.decode("utf-8"), self)

self._MaximumButton.setObjectName("MinMaxButton") # 设置按钮的ObjectName以在qss样式表内定义不同的按钮样式

self._MaximumButton.setToolTip("最大化")

self._MaximumButton.setMouseTracking(True) # 设置按钮鼠标跟踪(如不设,则按钮在widget上层,无法实现跟踪)

self._MaximumButton.setFixedHeight(self._TitleLabel.height()) # 设置按钮高度为标题栏高度

self._MaximumButton.clicked.connect(self._changeNormalButton) # 按钮信号连接切换到恢复窗口大小按钮函数

def _changeNormalButton(self):

# 切换到恢复窗口大小按钮

try:

self.showMaximized() # 先实现窗口最大化

self._MaximumButton.setText(b'\xef\x80\xb2'.decode("utf-8")) # 更改按钮文本

self._MaximumButton.setToolTip("恢复") # 更改按钮提示

self._MaximumButton.disconnect() # 断开原本的信号槽连接

self._MaximumButton.clicked.connect(self._changeMaxButton) # 重新连接信号和槽

except:

pass

def _changeMaxButton(self):

# 切换到最大化按钮

try:

self.showNormal()

self._MaximumButton.setText(b'\xef\x80\xb1'.decode("utf-8"))

self._MaximumButton.setToolTip("最大化")

self._MaximumButton.disconnect()

self._MaximumButton.clicked.connect(self._changeNormalButton)

except:

pass

def resizeEvent(self, QResizeEvent):

# 自定义窗口调整大小事件

self._TitleLabel.setFixedWidth(self.width()) # 将标题标签始终设为窗口宽度

# 分别移动三个按钮到正确的位置

try:

self._CloseButton.move(self.width() - self._CloseButton.width(), 0)

except:

pass

try:

self._MinimumButton.move(self.width() - (self._CloseButton.width() + 1) * 3 + 1, 0)

except:

pass

try:

self._MaximumButton.move(self.width() - (self._CloseButton.width() + 1) * 2 + 1, 0)

except:

pass

# 重新调整边界范围以备实现鼠标拖放缩放窗口大小,采用三个列表生成式生成三个列表

self._right_rect = [QPoint(x, y) for x in range(self.width() - self._padding, self.width() + 1)

for y in range(1, self.height() - self._padding)]

self._bottom_rect = [QPoint(x, y) for x in range(1, self.width() - self._padding)

for y in range(self.height() - self._padding, self.height() + 1)]

self._corner_rect = [QPoint(x, y) for x in range(self.width() - self._padding, self.width() + 1)

for y in range(self.height() - self._padding, self.height() + 1)]

def mousePressEvent(self, event):

# 重写鼠标点击的事件

if (event.button() == Qt.LeftButton) and (event.pos() in self._corner_rect):

# 鼠标左键点击右下角边界区域

self._corner_drag = True

event.accept()

elif (event.button() == Qt.LeftButton) and (event.pos() in self._right_rect):

# 鼠标左键点击右侧边界区域

self._right_drag = True

event.accept()

elif (event.button() == Qt.LeftButton) and (event.pos() in self._bottom_rect):

# 鼠标左键点击下侧边界区域

self._bottom_drag = True

event.accept()

elif (event.button() == Qt.LeftButton) and (event.y() < self._TitleLabel.height()):

# 鼠标左键点击标题栏区域

self._move_drag = True

self.move_DragPosition = event.globalPos() - self.pos()

event.accept()

def mouseMoveEvent(self, QMouseEvent):

# 判断鼠标位置切换鼠标手势

if QMouseEvent.pos() in self._corner_rect:

self.setCursor(Qt.SizeFDiagCursor)

elif QMouseEvent.pos() in self._bottom_rect:

self.setCursor(Qt.SizeVerCursor)

elif QMouseEvent.pos() in self._right_rect:

self.setCursor(Qt.SizeHorCursor)

else:

self.setCursor(Qt.ArrowCursor)

# 当鼠标左键点击不放及满足点击区域的要求后,分别实现不同的窗口调整

# 没有定义左方和上方相关的5个方向,主要是因为实现起来不难,但是效果很差,拖放的时候窗口闪烁,再研究研究是否有更好的实现

if Qt.LeftButton and self._right_drag:

# 右侧调整窗口宽度

self.resize(QMouseEvent.pos().x(), self.height())

QMouseEvent.accept()

elif Qt.LeftButton and self._bottom_drag:

# 下侧调整窗口高度

self.resize(self.width(), QMouseEvent.pos().y())

QMouseEvent.accept()

elif Qt.LeftButton and self._corner_drag:

# 右下角同时调整高度和宽度

self.resize(QMouseEvent.pos().x(), QMouseEvent.pos().y())

QMouseEvent.accept()

elif Qt.LeftButton and self._move_drag:

# 标题栏拖放窗口位置

self.move(QMouseEvent.globalPos() - self.move_DragPosition)

QMouseEvent.accept()

def mouseReleaseEvent(self, QMouseEvent):

# 鼠标释放后,各扳机复位

self._move_drag = False

self._corner_drag = False

self._bottom_drag = False

self._right_drag = False

if __name__ == "__main__":

from PyQt5.QtWidgets import QApplication

import sys

app = QApplication(sys.argv)

app.setStyleSheet(open("./UnFrameStyle.qss").read())

window = QUnFrameWindow()

window.setCloseButton(True)

window.setMinMaxButtons(True)

window.show()

sys.exit(app.exec_())

qss文件

/**********Title**********/

QTitleLabel{

background-color: Gainsboro;

font: 100 10pt;

}

/**********Button**********/

QTitleButton{

background-color: rgba(255, 255, 255, 0);

color: black;

border: 0px;

font: 100 10pt;

}

QTitleButton#MinMaxButton:hover{

background-color: #D0D0D1;

border: 0px;

font: 100 10pt;

}

QTitleButton#CloseButton:hover{

background-color: #D32424;

color: white;

border: 0px;

font: 100 10pt;

}

以上是 PyQt5实现无边框窗口的标题拖动和窗口缩放 的全部内容, 来源链接: utcz.com/z/329063.html

回到顶部