src/app/panels/DatasetListPanel.cpp

@@ -1,14 +1,18 @@
 #include "panels/DatasetListPanel.hpp"
 
 #include <QAbstractItemView>
+#include <QApplication>
 #include <QColor>
 #include <QHash>
+#include <QKeyEvent>
 #include <QListWidget>
 #include <QListWidgetItem>
+#include <QMouseEvent>
 #include <QObject>
 #include <QPainter>
 #include <QPainterPath>
 #include <QString>
+#include <QStyle>
 #include <QStyledItemDelegate>
 #include <QTreeWidget>
 #include <QTreeWidgetItem>
@@ -77,6 +81,23 @@ public:
                         geopro::app::tokenColor("accent/primary"));
         }
 
+        // 可勾选项：左侧画复选框(用当前 style 的指示器),文本整体右移。
+        int textLeftPad = 14;
+        const bool checkable = (idx.flags() & Qt::ItemIsUserCheckable);
+        if (checkable) {
+            const int box = 16;
+            QRect checkRect(r.left() + 12, r.top() + (r.height() - box) / 2, box, box);
+            const auto cs = static_cast<Qt::CheckState>(idx.data(Qt::CheckStateRole).toInt());
+            QStyleOptionViewItem o(opt);
+            o.rect = checkRect;
+            o.state &= ~QStyle::State_HasFocus;
+            o.state |= (cs == Qt::Checked ? QStyle::State_On : QStyle::State_Off);
+            const QWidget* w = opt.widget;
+            QStyle* st = w ? w->style() : QApplication::style();
+            st->drawPrimitive(QStyle::PE_IndicatorItemViewItemCheck, &o, p, w);
+            textLeftPad = 12 + box + 8;  // 复选框右侧留白后再放文本
+        }
+
         QString title = disp, meta;
         const int nl = disp.indexOf(QLatin1Char('\n'));
         if (nl >= 0) {
@@ -84,7 +105,7 @@ public:
             meta = disp.mid(nl + 1);
         }
 
-        const QRect textR = r.adjusted(14, 6, -12, -6);
+        const QRect textR = r.adjusted(textLeftPad, 6, -12, -6);
         // 标题
         QFont tf = opt.font;
         tf.setPixelSize(geopro::app::scaledPx(13));
@@ -106,6 +127,34 @@ public:
         }
         p->restore();
     }
+
+    bool editorEvent(QEvent* ev, QAbstractItemModel* model, const QStyleOptionViewItem& opt,
+                     const QModelIndex& idx) override {
+        if (!(idx.flags() & Qt::ItemIsUserCheckable))
+            return QStyledItemDelegate::editorEvent(ev, model, opt, idx);
+        const QRect r = opt.rect.adjusted(4, 2, -4, -2);
+        const int box = 16;
+        // 命中区放宽到复选框左侧整段(含一点文本起始),便于点击。
+        const QRect hit(r.left(), r.top(), 12 + box + 8, r.height());
+        auto toggle = [&]() {
+            const auto cur = static_cast<Qt::CheckState>(idx.data(Qt::CheckStateRole).toInt());
+            model->setData(idx, cur == Qt::Checked ? Qt::Unchecked : Qt::Checked, Qt::CheckStateRole);
+        };
+        if (ev->type() == QEvent::MouseButtonRelease) {
+            auto* me = static_cast<QMouseEvent*>(ev);
+            if (me->button() == Qt::LeftButton && hit.contains(me->pos())) {
+                toggle();
+                return true;
+            }
+        } else if (ev->type() == QEvent::KeyPress) {
+            auto* ke = static_cast<QKeyEvent*>(ev);
+            if (ke->key() == Qt::Key_Space || ke->key() == Qt::Key_Select) {
+                toggle();
+                return true;
+            }
+        }
+        return QStyledItemDelegate::editorEvent(ev, model, opt, idx);
+    }
 };
 }  // namespace
 

src/app/panels/columns/ColumnDrawer.cpp

@@ -2,6 +2,7 @@
 #include "panels/columns/Column3DDataset.hpp"
 #include "panels/columns/Column2DDataset.hpp"
 #include "panels/columns/Column3DAnalysis.hpp"
+#include "Theme.hpp"
 #include <QHBoxLayout>
 #include <QPushButton>
 #include <QTabWidget>
@@ -23,10 +24,16 @@ ColumnDrawer::ColumnDrawer(QWidget* parent)
     tabs->addTab(col2D_,       QStringLiteral("二维数据集"));
     tabs->addTab(colAnalysis_, QStringLiteral("三维分析"));
 
-    // 折叠按钮：固定宽 16px，垂直拉伸
+    // 折叠按钮：固定宽 18px，垂直拉伸
     toggleBtn_ = new QPushButton(QStringLiteral("◀"), this);
-    toggleBtn_->setFixedWidth(16);
+    toggleBtn_->setFixedWidth(18);
     toggleBtn_->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Expanding);
+    toggleBtn_->setCursor(Qt::PointingHandCursor);
+    toggleBtn_->setToolTip(QStringLiteral("折叠 / 展开"));
+    geopro::app::applyTokenizedStyleSheet(toggleBtn_,
+        QStringLiteral("QPushButton{background:{{bg/panel-subtle}};color:{{text/secondary}};"
+                       "border:none;border-left:1px solid {{border/default}};font-size:12px;}"
+                       "QPushButton:hover{background:{{bg/hover}};color:{{accent/primary}};}"));
     connect(toggleBtn_, &QPushButton::clicked, this, &ColumnDrawer::toggleCollapsed);
 
     // 根布局：[body_ | toggleBtn_]，无边距
@@ -36,8 +43,8 @@ ColumnDrawer::ColumnDrawer(QWidget* parent)
     root->addWidget(body_, 1);
     root->addWidget(toggleBtn_, 0);
 
-    // 展开时限宽 ~316px (300 body + 16 btn)
+    // 展开时限宽 ~318px (300 body + 18 btn)
-    setMaximumWidth(316);
+    setMaximumWidth(318);
 }
 
 void ColumnDrawer::toggleCollapsed()
@@ -46,7 +53,7 @@ void ColumnDrawer::toggleCollapsed()
     body_->setVisible(!collapsed_);
     toggleBtn_->setText(collapsed_ ? QStringLiteral("▶") : QStringLiteral("◀"));
     // 折叠后只保留按钮宽度；展开恢复上限
-    setMaximumWidth(collapsed_ ? 16 : 316);
+    setMaximumWidth(collapsed_ ? 18 : 318);
 }
 
 }  // namespace geopro::app