248 lines
10 KiB
C++
248 lines
10 KiB
C++
#include "faulttable.h"
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#include <QVBoxLayout>
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#include <QHBoxLayout>
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#include <QTableWidget>
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#include <QHeaderView>
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#include <QLabel>
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#include <QPushButton>
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#include <QKeyEvent>
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#include "global.h"
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FaultTable::FaultTable(QWidget* parent)
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: QWidget(parent)
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{
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QVBoxLayout* lay = new QVBoxLayout(this);
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lay->setContentsMargins(0, 0, 0, 0);
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lay->setSpacing(10);
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// 分页行（上一页 / 页码 / 下一页）——水平居中，字号与按钮加大
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QHBoxLayout* nav = new QHBoxLayout();
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nav->setSpacing(50);
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nav->addStretch(1);
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m_prev = new QPushButton("上一页", this);
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m_prev->setFixedSize(240, 100);
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m_prev->setStyleSheet("font-size:50px;");
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connect(m_prev, &QPushButton::clicked, this, [this]() {
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if (m_page > 0) { setPage(m_page - 1); emit pageChanged(m_page); }
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});
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m_pageLabel = new QLabel("1/1", this);
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m_pageLabel->setAlignment(Qt::AlignCenter);
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m_pageLabel->setStyleSheet(QString("color:%1;font-size:40px;").arg(C::TEXT));
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m_pageLabel->setFixedWidth(180);
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m_next = new QPushButton("下一页", this);
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m_next->setFixedSize(240, 100);
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m_next->setStyleSheet("font-size:50px;");
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connect(m_next, &QPushButton::clicked, this, [this]() {
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if (m_page < pageCount() - 1) { setPage(m_page + 1); emit pageChanged(m_page); }
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});
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nav->addWidget(m_prev);
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nav->addWidget(m_pageLabel);
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nav->addWidget(m_next);
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nav->addStretch(1); // 尾部也留弹性 → 整行居中
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lay->addLayout(nav);
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// 表格
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m_table = new QTableWidget(this);
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m_table->setColumnCount(3);
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m_table->setHorizontalHeaderLabels(QStringList() << "序号" << "故障时间" << "故障名称");
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m_table->setEditTriggers(QAbstractItemView::NoEditTriggers);
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m_table->setSelectionBehavior(QAbstractItemView::SelectRows);
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m_table->setSelectionMode(QAbstractItemView::SingleSelection);
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m_table->setTabKeyNavigation(false); // 关掉视图自带的 Tab 导航，改由下方 eventFilter 按行切换
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m_table->verticalHeader()->setVisible(false);
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m_table->horizontalHeader()->setFocusPolicy(Qt::NoFocus); // 表头不参与 Tab
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m_table->verticalHeader()->setFocusPolicy(Qt::NoFocus);
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m_table->setAlternatingRowColors(true);
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m_table->horizontalHeader()->setSectionResizeMode(QHeaderView::Stretch);
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m_table->horizontalHeader()->setSectionResizeMode(0, QHeaderView::Fixed);
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m_table->setColumnWidth(0, 120);
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m_table->horizontalHeader()->setSectionResizeMode(2, QHeaderView::Stretch);
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m_table->horizontalHeader()->setFixedHeight(kHeaderHeight); // 固定表头高度（供对齐）
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// 每页 6 行等分填满表格可用高度，行高由视口高度直接算出（见 updateRowHeights）。
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// 不能用 Stretch：它不会把行压到 minimumSectionSize 之下，而该值默认取自字体度量，
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// 主板上 QSS 指定的中文字体（微软雅黑等）都不存在、回退字体的行高更大，6 行塞不进
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// 视口就会出滚动条、只看得到 5 行。改为固定行高后与字体无关。
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m_table->verticalHeader()->setSectionResizeMode(QHeaderView::Fixed);
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m_table->verticalHeader()->setMinimumSectionSize(1);
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m_table->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
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connect(m_table, &QTableWidget::cellClicked, this, [this](int row, int) {
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int global = m_page * m_pageSize + row;
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if (global >= 0 && global < m_data.size())
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emit rowClicked(global);
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});
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m_table->installEventFilter(this); // 拦截 Tab，实现按行切换
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m_table->viewport()->setMouseTracking(true); // 悬停整行高亮
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m_table->viewport()->installEventFilter(this); // 鼠标移出视口 → 取消高亮
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connect(m_table, &QAbstractItemView::entered, this,
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[this](const QModelIndex& idx) { setHoverRow(idx.row()); });
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lay->addWidget(m_table, 1);
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refresh();
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}
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QWidget* FaultTable::view() const { return m_table; }
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QWidget* FaultTable::prevButton() const { return m_prev; }
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QWidget* FaultTable::nextButton() const { return m_next; }
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bool FaultTable::eventFilter(QObject* obj, QEvent* ev)
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{
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// 视口尺寸变化（含首次布局）后重算行高，保证 6 行恰好铺满。
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// 必须挂在 viewport 上：m_table 收到 Resize 时它的 viewport 还没重排，
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// 那时读到的 viewport 高度是旧值（首次为 0）。
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if (obj == m_table->viewport() && ev->type() == QEvent::Resize) {
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updateRowHeights();
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return QWidget::eventFilter(obj, ev);
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}
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if (obj == m_table->viewport() && ev->type() == QEvent::Leave) {
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setHoverRow(-1); // 鼠标移出表格 → 取消悬停高亮
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return QWidget::eventFilter(obj, ev);
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}
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if (obj != m_table)
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return QWidget::eventFilter(obj, ev);
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// 焦点进入表格时选中一行：正向(Tab)进末行→回首行、否则选首行；反向(Shift+Tab)同理选末行
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if (ev->type() == QEvent::FocusIn) {
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QFocusEvent* fe = static_cast<QFocusEvent*>(ev);
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const int last = m_table->rowCount() - 1;
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const int col = qMax(0, m_table->currentColumn());
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int row = -1;
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if (fe->reason() == Qt::TabFocusReason) {
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if (last >= 0 && (m_table->currentRow() < 0 || m_table->currentRow() >= last))
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row = 0;
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} else if (fe->reason() == Qt::BacktabFocusReason) {
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if (last >= 0 && (m_table->currentRow() < 0 || m_table->currentRow() <= 0))
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row = last;
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}
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if (row >= 0) {
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m_table->setCurrentCell(row, col);
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m_table->selectRow(row); // 显式整行选中（只设当前单元格时可能只高亮一格）
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}
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}
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// 仅键盘(Tab/Shift+Tab)移走焦点时清除选中；鼠标点击/弹窗抢焦点时保留，便于看清当前行
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if (ev->type() == QEvent::FocusOut) {
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QFocusEvent* fe = static_cast<QFocusEvent*>(ev);
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if (fe->reason() == Qt::TabFocusReason || fe->reason() == Qt::BacktabFocusReason)
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m_table->clearSelection();
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return QWidget::eventFilter(obj, ev);
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}
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// Tab / Shift+Tab：按行切换选中（每一行作为一个单位）；空格：等同鼠标点击
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if (ev->type() == QEvent::KeyPress) {
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QKeyEvent* ke = static_cast<QKeyEvent*>(ev);
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const int k = ke->key();
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// 上/下方向键在本机是"旋钮"键位（只给 ParamControl 调值），表格里不参与导航：
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// 换行只走 Tab/Shift+Tab，激活只走空格
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if (Keys::up(k) || Keys::down(k))
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return true;
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if (Keys::tab(k) || Keys::backtab(k)) {
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const bool back = Keys::backtab(k) || Keys::shifted(ke->modifiers());
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const int next = m_table->currentRow() + (back ? -1 : 1);
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if (next >= 0 && next < m_table->rowCount()) {
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m_table->setCurrentCell(next, qMax(0, m_table->currentColumn()));
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m_table->selectRow(next); // 整行选中
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return true; // 消费事件，焦点留在表格内
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}
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// 已在首/末行：不拦截，焦点按 Tab 顺序移到下一个控件
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} else if (Keys::space(k)) {
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// 键盘激活：与鼠标 cellClicked 走同一个信号，弹窗逻辑只有一份
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const int row = m_table->currentRow();
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const int global = m_page * m_pageSize + row;
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if (row >= 0 && global >= 0 && global < m_data.size()) {
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emit rowClicked(global);
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return true;
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}
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}
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}
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return QWidget::eventFilter(obj, ev);
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}
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// 鼠标悬停的整行高亮：颜色与“选中”一致（主色蓝底白字）
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void FaultTable::setHoverRow(int row)
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{
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if (row == m_hoverRow)
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return;
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if (m_hoverRow >= 0) {
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for (int c = 0; c < m_table->columnCount(); ++c)
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if (QTableWidgetItem* it = m_table->item(m_hoverRow, c)) {
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it->setData(Qt::BackgroundRole, QVariant());
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it->setData(Qt::ForegroundRole, QVariant());
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}
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}
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m_hoverRow = row;
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if (m_hoverRow >= 0) {
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for (int c = 0; c < m_table->columnCount(); ++c)
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if (QTableWidgetItem* it = m_table->item(m_hoverRow, c)) {
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it->setData(Qt::BackgroundRole, QColor(C::PRIMARY));
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it->setData(Qt::ForegroundRole, QColor("#FFFFFF"));
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}
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}
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}
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void FaultTable::setData(const QVector<FaultRecord>& data)
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{
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m_data = data;
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if (m_page >= pageCount() && pageCount() > 0)
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m_page = pageCount() - 1;
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refresh();
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}
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void FaultTable::setPage(int p)
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{
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m_page = qBound(0, p, qMax(0, pageCount() - 1));
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refresh();
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}
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int FaultTable::pageCount() const
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{
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if (m_data.isEmpty()) return 1;
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return (m_data.size() + m_pageSize - 1) / m_pageSize;
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}
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void FaultTable::refresh()
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{
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m_hoverRow = -1; // 单元格会重建，悬停行失效
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m_table->setRowCount(0);
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m_table->setRowCount(m_pageSize);
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int start = m_page * m_pageSize;
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for (int r = 0; r < m_pageSize; ++r) {
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int idx = start + r;
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bool has = idx < m_data.size();
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for (int c = 0; c < 3; ++c) {
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QTableWidgetItem* it = new QTableWidgetItem();
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it->setTextAlignment(Qt::AlignCenter);
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if (has) {
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const FaultRecord& rec = m_data[idx];
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if (c == 0) it->setText(QString::number(idx + 1));
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else if (c == 1) it->setText(rec.time);
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else it->setText(rec.desc);
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}
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m_table->setItem(r, c, it);
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}
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}
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// 空数据显示提示
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if (m_data.isEmpty()) {
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m_table->clearSelection();
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}
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m_pageLabel->setText(QString("%1/%2").arg(m_page + 1).arg(pageCount()));
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m_prev->setEnabled(m_page > 0);
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m_next->setEnabled(m_page < pageCount() - 1);
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}
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// 行高 = 视口高度 / 每页行数：6 行恰好铺满，不出现滚动条，也不受字体度量影响
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void FaultTable::updateRowHeights()
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{
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const int h = m_table->viewport()->height();
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if (h <= 0 || m_pageSize <= 0)
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return;
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m_table->verticalHeader()->setDefaultSectionSize(qMax(1, h / m_pageSize));
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}
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