pyside6圆角窗口与鼠标拖动

最终效果

圆角窗口

实现圆角窗口要做以下两件事

• 设置窗口样式

# 透明背景
self.setAttribute(Qt.WA_TranslucentBackground)
# 无边框
self.setWindowFlag(Qt.WindowType.FramelessWindowHint)
# 通过 qss 设置背景和圆角
self.setStyleSheet("Window{background-color:gray;border-radius:5px;}")

• 重载​​paintEvent​​​

opt = QStyleOption()
opt.initFrom(self)
p = QPainter(self)
self.style().drawPrimitive(QStyle.PE_Widget, opt, p, self)
super().paintEvent(event)

重载的目的是为了让窗口使用设置的QSS去绘制背景。

实现鼠标拖动

def mousePressEvent(self, event: PySide6.QtGui.QMouseEvent) -> None:
if event.button() == Qt.LeftButton:
self.mouse_start_pt = event.globalPosition().toPoint()
self.window_pos = self.frameGeometry().topLeft()
self.drag = True
def mouseMoveEvent(self, event: PySide6.QtGui.QMouseEvent) -> None:
if self.drag:
distance = event.globalPosition().toPoint() - self.mouse_start_pt
self.move(self.window_pos + distance)

def mouseReleaseEvent(self, event: PySide6.QtGui.QMouseEvent) -> None:
if event.button() == Qt.LeftButton:
self.drag = False

完整的代码

import PySide6
from PySide6.QtGui import QIntValidator, Qt, QPainter
from PySide6.QtWidgets import QApplication, QWidget, \
QVBoxLayout, QHBoxLayout, QLabel, QButtonGroup, \
QPushButton, QCheckBox, QLineEdit, QStyleOption, QStyle


class CheckBoxGroup(QButtonGroup):
def checkedId(self) -> list[int]:
lst = []
for btn in self.buttons():
if btn.isChecked():
lst.append(self.id(btn))

return lst


class Window(QWidget):
def __init__(self):
super().__init__()
self.drag = None
self.window_pos = None
self.mouse_start_pt = None
self.__set_up_ui()

def paintEvent(self, event: PySide6.QtGui.QPaintEvent) -> None:
opt = QStyleOption()
opt.initFrom(self)
p = QPainter(self)
self.style().drawPrimitive(QStyle.PE_Widget, opt, p, self)
super().paintEvent(event)

def __set_up_ui(self):
self.setAttribute(Qt.WA_TranslucentBackground)
self.setWindowFlag(Qt.WindowType.FramelessWindowHint)
self.setStyleSheet("Window {background-color:gray;border-radius:5px;}")

v_box = QVBoxLayout(self)
v_box.addWidget(QLabel("你的职业是:"))
h_box = QHBoxLayout()
v_box.addLayout(h_box)
lst = [
QCheckBox("程序员"),
QCheckBox("程序媛"),
QCheckBox("程序猿"),
]
qbg = CheckBoxGroup(self)
qbg.setExclusive(False)
self.qgb = qbg
_id = 1
for qrb in lst:
h_box.addWidget(qrb)
qbg.addButton(qrb, _id)
_id += 1

btn = QPushButton("获取职业")
btn.clicked.connect(lambda: print(self.qgb.checkedId()))
v_box.addWidget(btn)

le = QLineEdit()
le.setValidator(QIntValidator())

def mousePressEvent(self, event: PySide6.QtGui.QMouseEvent) -> None:
if event.button() == Qt.LeftButton:
self.mouse_start_pt = event.globalPosition().toPoint()
self.window_pos = self.frameGeometry().topLeft()
self.drag = True
def mouseMoveEvent(self, event: PySide6.QtGui.QMouseEvent) -> None:
if self.drag:
distance = event.globalPosition().toPoint() - self.mouse_start_pt
self.move(self.window_pos + distance)

def mouseReleaseEvent(self, event: PySide6.QtGui.QMouseEvent) -> None:
if event.button() == Qt.LeftButton:
self.drag = False

app = QApplication([])
w = Window()
w.show()
app.exec()