镜像自地址
https://github.com/a13zhy/a13rollcall.git
已同步 2026-10-20 11:27:47 +08:00
228 行
7.7 KiB
Python
228 行
7.7 KiB
Python
# -*- coding: utf-8 -*-
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"""
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A13课堂点名系统 - 抽取权重可视化组件
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动态显示每个学生的当前抽取权重，支持条形图和列表两种模式
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"""
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from PyQt5.QtWidgets import (
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QWidget, QVBoxLayout, QHBoxLayout, QLabel, QScrollArea,
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QFrame, QSizePolicy, QPushButton, QButtonGroup, QDialog
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)
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from PyQt5.QtCore import Qt, QTimer, pyqtSignal
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from PyQt5.QtGui import QFont, QColor, QPainter, QBrush, QPen, QLinearGradient
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class WeightBarWidget(QWidget):
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"""单个学生的权重条形图"""
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def __init__(self, student_name="", weight=1.0, max_weight=10.0, parent=None):
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super().__init__(parent)
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self.student_name = student_name
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self.weight = weight
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self.max_weight = max_weight
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self.setMinimumHeight(32)
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self.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Fixed)
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def set_weight(self, weight):
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self.weight = weight
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self.update()
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def set_student_name(self, name):
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self.student_name = name
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self.update()
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def paintEvent(self, event):
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painter = QPainter(self)
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painter.setRenderHint(QPainter.Antialiasing)
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w = self.width()
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h = self.height()
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padding = 8
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name_width = int(min(100, w * 0.3))
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bar_x = int(padding + name_width + 8)
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bar_width = int(w - bar_x - padding - 50)
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bar_height = 16
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bar_y = int((h - bar_height) // 2)
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painter.setPen(QColor("#333333"))
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painter.setFont(QFont("Microsoft YaHei", 9))
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painter.drawText(padding, 0, name_width, h, Qt.AlignVCenter | Qt.AlignLeft, self.student_name)
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painter.setPen(Qt.NoPen)
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painter.setBrush(QBrush(QColor("#f0f0f0")))
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painter.drawRoundedRect(bar_x, bar_y, bar_width, bar_height, 4, 4)
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if self.max_weight > 0:
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ratio = min(1.0, self.weight / self.max_weight)
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fill_width = max(4, int(bar_width * ratio))
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gradient = QLinearGradient(bar_x, 0, bar_x + fill_width, 0)
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if ratio > 0.7:
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gradient.setColorAt(0, QColor("#107c10"))
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gradient.setColorAt(1, QColor("#0e6c0e"))
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elif ratio > 0.4:
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gradient.setColorAt(0, QColor("#0067c0"))
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gradient.setColorAt(1, QColor("#005a9e"))
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else:
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gradient.setColorAt(0, QColor("#ca5010"))
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gradient.setColorAt(1, QColor("#b04810"))
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painter.setBrush(QBrush(gradient))
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painter.drawRoundedRect(bar_x, bar_y, fill_width, bar_height, 4, 4)
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weight_text = f"{self.weight:.1f}"
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painter.setPen(QColor("#666666"))
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painter.setFont(QFont("Microsoft YaHei", 8))
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painter.drawText(int(w - 50), 0, 42, h, Qt.AlignVCenter | Qt.AlignRight, weight_text)
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painter.end()
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class WeightVisualizationWidget(QWidget):
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"""
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抽取权重可视化组件
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显示所有学生的当前权重，支持动态更新
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"""
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def __init__(self, parent=None):
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super().__init__(parent)
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self._students = []
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self._weights = {}
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self._max_weight = 10.0
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self._setup_ui()
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def _setup_ui(self):
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layout = QVBoxLayout(self)
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layout.setContentsMargins(0, 0, 0, 0)
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layout.setSpacing(8)
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header = QHBoxLayout()
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header.setSpacing(8)
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title = QLabel("抽取权重分布")
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title.setStyleSheet("font-size: 12px; font-weight: 700; color: #0067c0;")
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header.addWidget(title)
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header.addStretch()
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self.summary_label = QLabel("")
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self.summary_label.setStyleSheet("font-size: 10px; color: #666666;")
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header.addWidget(self.summary_label)
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layout.addLayout(header)
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self.scroll = QScrollArea()
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self.scroll.setWidgetResizable(True)
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self.scroll.setFrameShape(QFrame.NoFrame)
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self.scroll.setStyleSheet("QScrollArea { border: none; background: transparent; }")
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self.container = QWidget()
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self.bars_layout = QVBoxLayout(self.container)
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self.bars_layout.setContentsMargins(0, 0, 0, 0)
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self.bars_layout.setSpacing(2)
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self.bars_layout.addStretch()
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self.scroll.setWidget(self.container)
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layout.addWidget(self.scroll, 1)
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self._bar_widgets = {}
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def update_weights(self, students, weights):
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"""
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更新权重显示
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students: 学生列表
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weights: {student_name: weight} 字典
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"""
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self._students = students
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self._weights = weights
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if weights:
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self._max_weight = max(weights.values()) if weights else 10.0
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if self._max_weight <= 0:
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self._max_weight = 1.0
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for i in reversed(range(self.bars_layout.count())):
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item = self.bars_layout.itemAt(i)
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if item and item.widget():
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item.widget().deleteLater()
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self._bar_widgets = {}
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if not students:
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empty_label = QLabel("暂无学生数据")
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empty_label.setAlignment(Qt.AlignCenter)
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empty_label.setStyleSheet("color: #999999; font-size: 11px; padding: 20px;")
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self.bars_layout.addWidget(empty_label)
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else:
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sorted_students = sorted(students, key=lambda s: weights.get(s, 0), reverse=True)
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for student in sorted_students:
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weight = weights.get(student, 1.0)
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bar = WeightBarWidget(student, weight, self._max_weight)
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self._bar_widgets[student] = bar
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self.bars_layout.addWidget(bar)
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self.bars_layout.addStretch()
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total_weight = sum(weights.values()) if weights else 0
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avg_weight = total_weight / len(students) if students else 0
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self.summary_label.setText(f"共{len(students)}人 | 总权重{total_weight:.1f} | 平均{avg_weight:.1f}")
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def highlight_student(self, student_name):
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"""高亮显示某个学生"""
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for name, bar in self._bar_widgets.items():
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if name == student_name:
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bar.setStyleSheet("background: #e5f1fb; border-radius: 4px;")
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else:
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bar.setStyleSheet("")
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def clear_highlight(self):
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"""清除所有高亮"""
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for bar in self._bar_widgets.values():
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bar.setStyleSheet("")
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class WeightDistributionDialog(QDialog):
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"""
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权重分布查看对话框
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全屏显示所有学生的权重分布
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"""
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def __init__(self, students=None, weights=None, parent=None):
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super().__init__(parent)
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self.setWindowTitle("抽取权重分布")
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self.setMinimumSize(500, 600)
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self.resize(550, 650)
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layout = QVBoxLayout(self)
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layout.setContentsMargins(20, 20, 20, 20)
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layout.setSpacing(16)
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title = QLabel("📊 抽取权重分布")
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title.setStyleSheet("font-size: 18px; font-weight: 800; color: #0067c0;")
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layout.addWidget(title)
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desc = QLabel("动态权重模式下，未被抽取的学生权重会逐渐增加，被抽取的学生权重会降低，确保抽取公平性。")
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desc.setStyleSheet("font-size: 11px; color: #666666;")
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desc.setWordWrap(True)
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layout.addWidget(desc)
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self.visualization = WeightVisualizationWidget()
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layout.addWidget(self.visualization, 1)
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if students and weights:
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self.visualization.update_weights(students, weights)
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btn_layout = QHBoxLayout()
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btn_layout.addStretch()
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close_btn = QPushButton("关闭")
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close_btn.setObjectName("primary")
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close_btn.clicked.connect(self.accept)
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btn_layout.addWidget(close_btn)
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layout.addLayout(btn_layout)
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def create_weight_visualization(parent=None):
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"""创建权重可视化组件的工厂函数"""
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return WeightVisualizationWidget(parent)
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