import sys
from PyQt5.Qt import *
class Window(QWidget):
def __init__(self):
super().__init__()
# 按钮宽,高,距离顶部距离
self.max_min_close_button_size = [45, 25, 0]
self.setup_ui()
def setup_ui(self):
self.setWindowTitle("Qt桌面应用程序")
# 窗口无边框
self.setWindowFlag(Qt.FramelessWindowHint)
# 窗口不透明度
self.setWindowOpacity(0.8)
self.resize(300, 300)
self.add_max_min_close_button()
self.max_min_close_button_func()
# 定义最小化、最大化、关闭按钮内容、尺寸
def add_max_min_close_button(self):
self.close_button = QPushButton(self)
self.close_button.setText("关闭")
self.close_button.resize(self.max_min_close_button_size[0], self.max_min_close_button_size[1])
self.max_button = QPushButton(self)
self.max_button.setText("最大化")
self.max_button.resize(self.max_min_close_button_size[0], self.max_min_close_button_size[1])
self.min_button = QPushButton(self)
self.min_button.setText("最小化")
self.min_button.resize(self.max_min_close_button_size[0], self.max_min_close_button_size[1])
# 重写窗口尺寸变化事件处理方法，重新设定按钮位置
def resizeEvent(self, a0) -> None:
self.close_button_position_x = self.width() - self.max_min_close_button_size[0]
self.close_button_position_y = self.max_min_close_button_size[2]
self.close_button.move(self.close_button_position_x, self.close_button_position_y)
self.max_button_position_x = self.close_button_position_x - self.max_min_close_button_size[0]
self.max_button_position_y = self.max_min_close_button_size[2]
self.max_button.move(self.max_button_position_x, self.max_button_position_y)
self.min_button_position_x = self.max_button_position_x - self.max_min_close_button_size[0]
self.min_button_position_y = self.max_min_close_button_size[2]
self.min_button.move(self.min_button_position_x, self.min_button_position_y)
# 重写鼠标按下事件处理方法，鼠标左键按下时获取鼠标和窗口初始位置
def mousePressEvent(self, a0) -> None:
if a0.button() == Qt.LeftButton:
# 鼠标左键按下标志
self.left_button_press_flag = True
self.window_initial_position = [self.x(), self.y()]
self.mouse_initial_position = [a0.globalX(), a0.globalY()]
# 重写鼠标移动事件处理方法，鼠标左键按下移动时重新设置窗口的位置
def mouseMoveEvent(self, a0) -> None:
if self.left_button_press_flag:
mouse_current_position = [a0.globalX(), a0.globalY()]
mouse_move_distance = [mouse_current_position[0] - self.mouse_initial_position[0],
mouse_current_position[1] - self.mouse_initial_position[1]]
window_current_position = [self.window_initial_position[0] + mouse_move_distance[0],
self.window_initial_position[1] + mouse_move_distance[1]]
self.move(window_current_position[0], window_current_position[1])
# 重写鼠标松开事件处理方法，鼠标左键松开时重置鼠标左键按下标志
def mouseReleaseEvent(self, a0) -> None:
# if self.left_button_press_flag:
self.left_button_press_flag = False
# 定义按键功能方法
def max_min_close_button_func(self):
def window_close():
self.close()
self.close_button.clicked.connect(window_close)
def window_maximum():
if self.isMaximized():
self.showNormal()
self.max_button.setText("最大化")
else:
self.showMaximized()
self.max_button.setText("恢复")
self.max_button.clicked.connect(window_maximum)
def window_minimum():
self.showMinimized()
self.min_button.clicked.connect(window_minimum)
if __name__ == '__main__':
app = QApplication(sys.argv)
window = Window()
window.show()
sys.exit(app.exec_())
