Feeding_control_system/view/widgets/system_nav_bar.py

from PySide6.QtWidgets import QWidget, QLabel, QHBoxLayout, QSpacerItem, QSizePolicy
from PySide6.QtGui import QPixmap, QFont, QPainter
from PySide6.QtCore import Qt, QTimer, QDateTime

import resources.resources_rc
from utils.image_paths import ImagePaths

"""主界面最上方的导航栏"""

# 自定义消息容器, 显示系统消息
class MsgContainer(QWidget):
    def __init__(self, parent=None):
        super().__init__(parent)
        self.setFixedSize(770, 24)

        # 加载消息区域背景图
        self.bg_pixmap = QPixmap(ImagePaths.SYSTEM_MSG_BACKGROUND)  # 替换为实际路径
        if self.bg_pixmap.isNull():
            print("警告：系统消息背景.png 加载失败")

        # 消息区域内部布局（喇叭+文本）
        msg_layout = QHBoxLayout(self)
        msg_layout.setContentsMargins(0, 0, 0, 0)  # 调整内边距，避免内容贴边
        msg_layout.setSpacing(3)  # 喇叭和文本的间距

        # 消息喇叭图标
        self.msg_icon = QLabel()
        self.msg_icon.setFixedSize(13, 18)
        # self.msg_icon.setStyleSheet("background-color:red;")
        self.msg_icon.setPixmap(QPixmap(ImagePaths.SYSTEM_MSG_HORN))  # 替换为实际路径
        msg_layout.addWidget(self.msg_icon, alignment=Qt.AlignVCenter | Qt.AlignLeft)

        # 消息文本
        current_time = QDateTime.currentDateTime().toString("hh:mm:ss")
        self.msg_text = QLabel(f"{current_time} 开始启动智能浇筑系统")
        self.msg_text.setFixedWidth(740)
        # self.msg_text.setStyleSheet("color: white; font-size: 14px;background-color:red;")  # 文本样式
        self.msg_text.setStyleSheet("color: white; font-size: 16px;font-weight:Bold;")
        self.msg_text.setAlignment(Qt.AlignLeft | Qt.AlignVCenter)
        msg_layout.addWidget(self.msg_text)

    def paintEvent(self, event):
        # 绘制消息区域背景图
        super().paintEvent(event)  # 确保子控件正常绘制
        if self.bg_pixmap.isNull():
            return  # 图片加载失败则不绘制

        painter = QPainter(self)
        painter.setRenderHint(QPainter.SmoothPixmapTransform)  # 缩放平滑
        painter.drawPixmap(self.rect(), self.bg_pixmap)

class SystemNavBar(QWidget):
    def __init__(self, parent=None):
        super().__init__(parent)
        # 设置尺寸
        self.setFixedSize(1280, 80)
        
        # 1. 加载背景图
        self.bg_pixmap = QPixmap(ImagePaths.SYSTEM_MAIN_NAV)  # 替换为实际图片路径
        if self.bg_pixmap.isNull():
            print("警告：背景图加载失败，请检查路径！")

        main_layout = QHBoxLayout(self)
        main_layout.setContentsMargins(9, 9, 9, 19)
        main_layout.setSpacing(100) # 注意：左侧的logo+系统标题的容器 和 系统消息的间隔

        # 左侧区域：logo + 系统标题
        left_container = QWidget()  
        left_container.setFixedSize(400, 53)
        left_layout = QHBoxLayout(left_container)  # 容器内部的水平布局
        left_layout.setContentsMargins(0, 0, 0, 0)  # 容器内边距
        left_layout.setSpacing(6)  # 设置logo和标题之间的间隙为6px
        # 系统logo
        self.logo = QLabel()
        self.logo.setFixedSize(53, 53)
        self.logo.setPixmap(QPixmap(ImagePaths.SYSTEM_LOGO))
        left_layout.addWidget(self.logo, alignment=Qt.AlignTop)  
        # 系统总标题
        self.title = QLabel()
        self.title.setPixmap(QPixmap(ImagePaths.SYSTEM_TOTAL_TITLE))
        left_layout.addWidget(self.title, alignment=Qt.AlignCenter)  
        main_layout.addWidget(left_container, alignment=Qt.AlignTop)

        # 中间区域：系统消息（喇叭+文本+背景）
        self.msg_container = MsgContainer()
        main_layout.addWidget(self.msg_container, alignment=Qt.AlignBottom | Qt.AlignRight)

        # 右侧区域：实时时间
        self.time_label = QLabel()
        self.time_label.setStyleSheet("color: white; font-size: 16px;font-weight:Bold;")
        main_layout.addWidget(self.time_label, alignment= Qt.AlignTop | Qt.AlignRight)

        # 启动时间更新定时器
        self.timer = QTimer(self)
        self.timer.timeout.connect(self.update_time)
        self.timer.start(1000)  # 每秒更新一次
    
    def paintEvent(self, event):
        # 2. 调用父类paintEvent
        super().paintEvent(event)

        # 3. 创建画家对象，绘制背景图
        painter = QPainter(self)
        painter.setRenderHint(QPainter.SmoothPixmapTransform)  # 缩放时平滑

        painter.drawPixmap(0, 0, self.bg_pixmap)

    def update_time(self):
        current_time = QDateTime.currentDateTime().toString("yyyy/MM/dd hh:mm:ss")
        self.time_label.setText(current_time)

# 测试代码
if __name__ == "__main__":
    import sys
    from PySide6.QtWidgets import QApplication, QMainWindow

    app = QApplication(sys.argv)
    nav_bar = SystemNavBar()
    nav_bar.show()
    sys.exit(app.exec())