工具类（读者直接复制到项目中） class QWindowMoveResizeWidget(QWidget):
def __init__(self, parent=None):
super(QWindowMoveResizeWidget, self).__init__(parent)
# 1.设置无边框 和 透明背景 无边框必须设置全，不然会导致点击任务栏不能最小化窗口
self.setWindowFlags(
Qt.Window
| Qt.FramelessWindowHint
| Qt.WindowSystemMenuHint
| Qt.WindowMinimizeButtonHint
| Qt.WindowMaximizeButtonHint
)
# 设置窗体透明
self.setAttribute(Qt.WA_TranslucentBackground)
# 默认标题栏高度 必须设
self.DEFAULT_TITILE_BAR_HEIGHT = 40
# 鼠标缩放窗口最小宽度，必须设
self.MIN_WINDOW_WIDTH = 10
self.MIN_WINDOW_HEIGHT = 10
# 鼠标拖动窗口的标识
self.m_flag = False
# 初始化鼠标拖动标题栏标志
self.drag_flag = False
# 记录按下时窗口坐标， 这个用于窗口移动
self.win_x = 0
self.win_y = 0
# 记录按下时鼠标坐标，这个用于计算鼠标移动的距离
self.mouse_x = 0
self.mouse_y = 0
# 记录鼠标移入的拖动区域，共8种区域 左上 左 左下 上 下 右上 右 右下
self.left_up = None
self.left = None
self.left_down = None
self.up = None
self.down = None
self.right_up = None
self.right = None
self.right_down = None
# 设置为True则mouseMoveEvent事件不需要按下也能触发,不然要按着鼠标左键或右键才能触发
self.setMouseTracking(True)
# 设置子类的mousetrack
# self.centralwidget.setMouseTracking(True)
# 记录按下时窗口的大小，用于计算鼠标相对于窗口移动的距离，用于缩放
self.win_w = 0
self.win_h = 0
# 初始化鼠标缩放标志
self.move_left_up_flag = False
self.move_left_flag = False
self.move_left_down_flag = False
self.move_up_flag = False
self.move_down_flag = False
self.move_right_up_flag = False
self.move_right_flag = False
self.move_right_down_flag = False
# 设置边框圆角
def paintEvent(self, event: PySide6.QtGui.QPaintEvent) -> None:
painter = QPainter(self)
painter.setRenderHint(QPainter.RenderHint.Antialiasing) # 设置抗锯齿，不然边框会有明显锯齿
painter.setBrush(Qt.white) # 设置窗体颜色
painter.drawRoundedRect(self.rect(), 10, 10)
super().paintEvent(event)
def resizeEvent(self, a0: QtGui.QResizeEvent) -> None:
"""
@description 窗口缩放事件
@param
@return
"""
# 最大化最小化的时候，需要去改变按钮组位置
# self.titleBar.close_btn.move(self.width() - 33, 10)
# self.titleBar.max_btn.move(self.width() - 66, 10)
# self.titleBar.min_btn.move(self.width() - 99, 10)
# self.titleBar.title.resize(self.width(), DEFAULT_TITILE_BAR_HEIGHT)
# 记录鼠标移入的拖动区域，共8种区域
self.left_up = QRect(0, 0, 10, 10)
self.left = QRect(0, 10, 10, self.height() - 20)
self.left_down = QRect(0, self.height() - 10, 10, 10)
self.up = QRect(10, 0, self.width() - 20, 10)
self.down = QRect(10, self.height() - 10, self.width() - 20, 10)
self.right_up = QRect(self.width() - 10, 0, 10, 10)
self.right = QRect(self.width() - 10, 10, 10, self.height() - 20)
self.right_down = QRect(self.width() - 10, self.height() - 10, 10, 10)
return super().resizeEvent(a0)
def mousePressEvent(self, a0: QtGui.QMouseEvent) -> None:
"""
拖动窗口
"""
if a0.button() == QtCore.Qt.LeftButton and self.isMaximized() == False and self.cursor().shape() == QtGui.QCursor(
QtCore.Qt.ArrowCursor).shape():
self.m_flag = True
self.m_Position = a0.globalPosition().toPoint() - self.pos() # 获取鼠标相对窗口的位置
a0.accept()
self.setCursor(QtGui.QCursor(QtCore.Qt.OpenHandCursor)) # 更改鼠标图标
else:
"""
@description 鼠标按下事件
@param
@return
"""
# 记录按下时窗口坐标， 这个用于窗口移动
self.win_x = self.x()
self.win_y = self.y()
# 记录按下时鼠标坐标，这个用于计算鼠标移动的距离
self.mouse_x = a0.globalPosition().x()
self.mouse_y = a0.globalPosition().y()
# 记录按下时窗口的大小，用于计算鼠标相对于窗口移动的距离，用于缩放
self.win_w = self.width()
self.win_h = self.height()
if not self.isMaximized():
# 如果按下的是鼠标左键
if a0.button() == Qt.MouseButton.LeftButton and self.left_up.contains(a0.position().x(),
a0.position().y()):
self.move_left_up_flag = True
if a0.button() == Qt.MouseButton.LeftButton and self.left.contains(a0.position().x(),
a0.position().y()):
self.move_left_flag = True
if a0.button() == Qt.MouseButton.LeftButton and self.left_down.contains(
a0.position().x(), a0.position().y()
):
self.move_left_down_flag = True
if a0.button() == Qt.MouseButton.LeftButton and self.up.contains(a0.position().x(), a0.position().y()):
self.move_up_flag = True
if a0.button() == Qt.MouseButton.LeftButton and self.down.contains(a0.position().x(),
a0.position().y()):
self.move_down_flag = True
if a0.button() == Qt.MouseButton.LeftButton and self.right_up.contains(
a0.position().x(), a0.position().y()
):
self.move_right_up_flag = True
if a0.button() == Qt.MouseButton.LeftButton and self.right.contains(a0.position().x(),
a0.position().y()):
self.move_right_flag = True
if a0.button() == Qt.MouseButton.LeftButton and self.right_down.contains(
a0.position().x(), a0.position().y()
):
self.move_right_down_flag = True
return super().mousePressEvent(a0)
def mouseMoveEvent(self, a0: QtGui.QMouseEvent) -> None:
"""
拖动窗口
"""
if QtCore.Qt.LeftButton and self.m_flag and self.cursor().shape() == QtGui.QCursor(
QtCore.Qt.OpenHandCursor).shape():
self.move(a0.globalPosition().toPoint() - self.m_Position) # 更改窗口位置
a0.accept()
else:
"""
@description 鼠标按下移动事件
@param
@return
"""
# 获取移动后鼠标的位置
mouse_move_x = a0.globalPosition().x()
mouse_move_y = a0.globalPosition().y()
# 计算移动的距离
offset_x = mouse_move_x - self.mouse_x
offset_y = mouse_move_y - self.mouse_y
# 移动鼠标时设置鼠标样式
if not self.isMaximized():
# 不是拖动的时才可能是缩放状态
if not self.drag_flag:
# 左上
if self.left_up.contains(a0.position().x(), a0.position().y()):
self.setCursor(Qt.SizeFDiagCursor)
# 左
elif self.left.contains(a0.position().x(), a0.position().y()):
self.setCursor(Qt.SizeHorCursor)
# 左下
elif self.left_down.contains(a0.position().x(), a0.position().y()):
self.setCursor(Qt.SizeBDiagCursor)
# 上
elif self.up.contains(a0.position().x(), a0.position().y()):
self.setCursor(Qt.SizeVerCursor)
# 下
elif self.down.contains(a0.position().x(), a0.position().y()):
self.setCursor(Qt.SizeVerCursor)
# 右上
elif self.right_up.contains(a0.position().x(), a0.position().y()):
self.setCursor(Qt.SizeBDiagCursor)
# 右
elif self.right.contains(a0.position().x(), a0.position().y()):
self.setCursor(Qt.SizeHorCursor)
# 右下
elif self.right_down.contains(a0.position().x(), a0.position().y()):
self.setCursor(Qt.SizeFDiagCursor)
else:
self.setCursor(Qt.ArrowCursor)
else:
self.setCursor(Qt.ArrowCursor)
else:
self.setCursor(Qt.ArrowCursor)
# 如果按下且在左上角范围内则缩放（其他代码参考左上）
if self.move_left_up_flag:
# 拖动的时候也要设置一下形状
self.setCursor(Qt.SizeFDiagCursor)
resize_w = self.win_w - offset_x
resize_h = self.win_h - offset_y
# 如果缩放后的尺寸小于最小尺寸则窗口不能缩放了
resize_w = self.MIN_WINDOW_WIDTH if resize_w < self.MIN_WINDOW_WIDTH else resize_w
resize_h = self.MIN_WINDOW_HEIGHT if resize_h < self.MIN_WINDOW_HEIGHT else resize_h
# 设置窗口缩放尺寸
self.resize(resize_w, resize_h)
# 设置窗口移动,需要鼠标跟随
# x y 都要鼠标跟随
if resize_w != self.MIN_WINDOW_WIDTH and resize_h != self.MIN_WINDOW_HEIGHT:
self.move(self.win_x + offset_x, self.win_y + offset_y)
# 缩放宽度等于最小宽度，高度鼠标跟随
if resize_w == self.MIN_WINDOW_WIDTH and resize_h != self.MIN_WINDOW_HEIGHT:
self.move(self.x(), self.win_y + offset_y)
# 缩放高度等于最小高度，宽度鼠标跟随
if resize_w != self.MIN_WINDOW_WIDTH and resize_h == self.MIN_WINDOW_HEIGHT:
self.move(self.win_x + offset_x, self.y())
# 如果按下且在左边范围内则缩放
elif self.move_left_flag:
# 拖动的时候也要设置一下形状
self.setCursor(Qt.SizeHorCursor)
resize_w = self.win_w - offset_x
resize_h = self.win_h
# 如果缩放后的尺寸小于最小尺寸则窗口不能缩放了
resize_w = self.MIN_WINDOW_WIDTH if resize_w < self.MIN_WINDOW_WIDTH else resize_w
# 设置窗口缩放尺寸
self.resize(resize_w, resize_h)
# 设置窗口移动,需要鼠标跟随
# 只要宽度鼠标跟随
if resize_w != self.MIN_WINDOW_WIDTH:
self.move(self.win_x + offset_x, self.win_y)
# 如果按下且在左下角范围内则缩放
elif self.move_left_down_flag:
# 拖动的时候也要设置一下形状
self.setCursor(Qt.SizeBDiagCursor)
resize_w = self.win_w - offset_x
resize_h = self.win_h + offset_y
# 如果缩放后的尺寸小于最小尺寸则窗口不能缩放了
resize_w = self.MIN_WINDOW_WIDTH if resize_w < self.MIN_WINDOW_WIDTH else resize_w
resize_h = self.MIN_WINDOW_HEIGHT if resize_h < self.MIN_WINDOW_HEIGHT else resize_h
# 设置窗口缩放尺寸
self.resize(resize_w, resize_h)
# 设置窗口移动,需要鼠标跟随
# x y 都要鼠标跟随
if resize_w != self.MIN_WINDOW_WIDTH and resize_h != self.MIN_WINDOW_HEIGHT:
self.move(self.win_x + offset_x, self.y())
# 缩放高度等于最小高度，宽度鼠标跟随
if resize_w != self.MIN_WINDOW_WIDTH and resize_h == self.MIN_WINDOW_HEIGHT:
self.move(self.win_x + offset_x, self.y())
# 如果按下且在上边范围内则缩放
elif self.move_up_flag:
# 拖动的时候也要设置一下形状
self.setCursor(Qt.SizeVerCursor)
resize_w = self.win_w
resize_h = self.win_h - offset_y
# 如果缩放后的尺寸小于最小尺寸则窗口不能缩放了
resize_h = self.MIN_WINDOW_HEIGHT if resize_h < self.MIN_WINDOW_HEIGHT else resize_h
# 设置窗口缩放尺寸
self.resize(resize_w, resize_h)
# 设置窗口移动,需要鼠标跟随
# 只要高度鼠标跟随
if resize_h != self.MIN_WINDOW_HEIGHT:
self.move(self.win_x, self.win_y + offset_y)
# 如果按下且在下边范围内则缩放
elif self.move_down_flag:
# 拖动的时候也要设置一下形状
self.setCursor(Qt.SizeVerCursor)
resize_w = self.win_w
resize_h = self.win_h + offset_y
# 如果缩放后的尺寸小于最小尺寸则窗口不能缩放了
resize_h = self.MIN_WINDOW_HEIGHT if resize_h < self.MIN_WINDOW_HEIGHT else resize_h
# 设置窗口缩放尺寸
self.resize(resize_w, resize_h)
# 如果按下且在右上角范围内则缩放
elif self.move_right_up_flag:
# 拖动的时候也要设置一下形状
self.setCursor(Qt.SizeBDiagCursor)
resize_w = self.win_w + offset_x
resize_h = self.win_h - offset_y
# 如果缩放后的尺寸小于最小尺寸则窗口不能缩放了
resize_w = self.MIN_WINDOW_WIDTH if resize_w < self.MIN_WINDOW_WIDTH else resize_w
resize_h = self.MIN_WINDOW_HEIGHT if resize_h < self.MIN_WINDOW_HEIGHT else resize_h
# 设置窗口缩放尺寸
self.resize(resize_w, resize_h)
# 设置窗口移动,需要鼠标跟随
# x y 都要鼠标跟随
if resize_w != self.MIN_WINDOW_WIDTH and resize_h != self.MIN_WINDOW_HEIGHT:
self.move(self.win_x, self.win_y + offset_y)
# 缩放宽度等于最小宽度，高度鼠标跟随
if resize_w == self.MIN_WINDOW_WIDTH and resize_h != self.MIN_WINDOW_HEIGHT:
self.move(self.x(), self.win_y + offset_y)
# 如果按下且在右边范围内则缩放
elif self.move_right_flag:
# 拖动的时候也要设置一下形状
self.setCursor(Qt.SizeHorCursor)
resize_w = self.win_w + offset_x
resize_h = self.win_h
# 如果缩放后的尺寸小于最小尺寸则窗口不能缩放了
resize_w = self.MIN_WINDOW_WIDTH if resize_w < self.MIN_WINDOW_WIDTH else resize_w
# 设置窗口缩放尺寸
self.resize(resize_w, resize_h)
# 如果按下且在右下角范围内则缩放
elif self.move_right_down_flag:
# 拖动的时候也要设置一下形状
self.setCursor(Qt.SizeFDiagCursor)
resize_w = self.win_w + offset_x
resize_h = self.win_h + offset_y
# 如果缩放后的尺寸小于最小尺寸则窗口不能缩放了
resize_w = self.MIN_WINDOW_WIDTH if resize_w < self.MIN_WINDOW_WIDTH else resize_w
resize_h = self.MIN_WINDOW_HEIGHT if resize_h < self.MIN_WINDOW_HEIGHT else resize_h
# 设置窗口缩放尺寸
self.resize(resize_w, resize_h)
# 如果按下才能移动
elif self.drag_flag:
# 设置窗口移动的距离
self.move(self.win_x + offset_x, self.win_y + offset_y)
return super().mouseMoveEvent(a0)
def mouseReleaseEvent(self, a0: QtGui.QMouseEvent) -> None:
self.m_flag = False
self.setCursor(QtGui.QCursor(QtCore.Qt.ArrowCursor))
"""
@description 鼠标按下松开事件
@param
@return
"""
self.drag_flag = False
self.move_left_up_flag = False
self.move_left_flag = False
self.move_left_down_flag = False
self.move_up_flag = False
self.move_down_flag = False
self.move_right_up_flag = False
self.move_right_flag = False
self.move_right_down_flag = False
self.setCursor(QtGui.QCursor(QtCore.Qt.ArrowCursor))
return super().mouseReleaseEvent(a0)
