pyqt-todolist/view/MyDayView.py

import os
import sys
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import Qt

from view.AddToDoLabel import AddToDoAction
from view.MyDayHeadLabel import HeadLabel
from view.ChangeThemeLabel import ChangeTheme


class MyDay(QWidget):
    def __init__(self, parent=None):
        super(MyDay, self).__init__()
        self.setObjectName('my_day')
        self.setStyleSheet('#my_day{background-image:url("../images/10.jpg");border-radius: 10px;}')

        self.setAttribute(Qt.WA_StyledBackground)
        # 下面这一句有问题，需要修复修改主题的实现方法
        # self.setStyleSheet('#my_day{background-image:url("../images/2.jpg");')
        # 无效
        # palette = QPalette()
        # palette.setBrush(QPalette.Background,
        #                  QBrush(QPixmap(os.getcwd() + "/../images/0.jpg").scaled(self.width(), self.height())))
        # self.setPalette(palette)

        # 布局样式：最外面一个大的垂直布局，里面的最上面标题是一个水平布局，水平布局显示的是一个垂直布局和一个右边的选项，用来更换背景
        # 布局样式：继承QWidget,里面一个垂直布局，最上面一个QWidget用来设置头部布局
        #         头部QWidget里面一个水平布局，水平布局里面一个QWidget（方便设置整体位置），然后是一个
        layout = QVBoxLayout()  # 总布局
        head_layout = QHBoxLayout()     # 头部总布局

        head_widget = QWidget(self)
        head_widget.setMinimumHeight(175)

        head_widget.setMaximumHeight(200)

        head_widget.setAttribute(Qt.WA_StyledBackground)
        self.todo_list = QListWidget()
        self.todo_list.setObjectName('todo_list')

        self.add_todo = AddToDoAction()
        self.add_todo.setAlignment(Qt.AlignBottom)

        # head_widget.setPalette(palette)

        head_widget.setLayout(head_layout)
        head_layout.setAlignment(Qt.AlignCenter)
        # head_left_layout = QVBoxLayout()

        layout.addWidget(head_widget, 2, Qt.AlignTop)
        self.head_label = HeadLabel()
        layout.addWidget(self.todo_list, 6, Qt.AlignCenter | Qt.AlignTop)
        head_layout.addWidget(self.head_label, 8)
        # todo : 修改布局
        layout.addWidget(self.add_todo, 2, Qt.AlignHCenter)

        self.menu_image = QPushButton()
        self.menu_image.setObjectName('menu_image')
        self.menu_image.setFixedSize(30, 30)
        # self.menu_image.setScaledContents(True)
        pic_btn = QPixmap(os.getcwd() + "/../images/menu.png")
        self.menu_image.setIcon(QIcon(pic_btn))
        # self.menu_image.setFixedSize(QPixmap(os.getcwd() + "/../images/menu.png").size())
        # head_layout.addLayout(head_left_layout)
        head_layout.addWidget(self.menu_image, 2)
        head_layout.addStretch(1)

        self.setLayout(layout)
        # self.menu_image.clicked.connect(self.menu_action)

        button_menu = QMenu(self)
        # 背景透明
        button_menu.setAttribute(Qt.WA_TranslucentBackground)
        # 无边框、去掉自带阴影
        button_menu.setWindowFlags(
            button_menu.windowFlags() | Qt.FramelessWindowHint | Qt.NoDropShadowWindowHint)

        self.menu_image.setMenu(button_menu)

        theme_label = QAction(self)
        theme_label.setText('主题')
        theme_label.setDisabled(True)
        button_menu.addAction(theme_label)
        button_menu.addSeparator()
        # button_menu
        for i in range(11):
            label_action = QAction(self)
            label_action.setIcon(QIcon('../images/' + str(i) + '.jpg'))
            label_action.setText(str(i))
            label_action.triggered.connect(lambda: self.menu_action(str(i)))
            button_menu.addAction(label_action)

        # pass

        # todo : 下面的方法实现点击更换主题的功能

    def menu_action(self, count):
        # 点击按钮
        # self.menu_label = ChangeTheme()
        self.setStyleSheet('#my_day{background-image:url("../images/3.jpg");'
                           'background-position: center;    border-radius: 10px;'
                           '    padding-top:170px;}')
        self.head_label.show()

        print('选中：' + count)
        # self.palette = QPalette()
        # self.palette.setBrush(self.palette.Background, QBrush(QPixmap('../images/' + count + '.png')))
        # self.setPalette(self.palette)

        pass