添加模型分割

client/gui/widgets/LongPressSwitchToolButton.cpp

@@ -0,0 +1,52 @@
+#include "widgets/LongPressSwitchToolButton.h"
+
+#include <QApplication>
+#include <QMouseEvent>
+#include <QTimer>
+
+#include <algorithm>
+
+LongPressSwitchToolButton::LongPressSwitchToolButton(QWidget* parent)
+    : QToolButton(parent) {
+    m_timer = new QTimer(this);
+    m_timer->setSingleShot(true);
+    m_timer->setInterval(m_intervalMs);
+    connect(m_timer, &QTimer::timeout, this, [this]() {
+        if (!(QApplication::mouseButtons() & Qt::LeftButton)) {
+            return;
+        }
+        m_longPressEmittedForThisPress = true;
+        emit longPressTriggered();
+    });
+}
+
+void LongPressSwitchToolButton::setLongPressInterval(int ms) {
+    m_intervalMs = std::max(50, ms);
+    if (m_timer) {
+        m_timer->setInterval(m_intervalMs);
+    }
+}
+
+void LongPressSwitchToolButton::mousePressEvent(QMouseEvent* event) {
+    if (event->button() == Qt::LeftButton) {
+        m_longPressEmittedForThisPress = false;
+        m_timer->start();
+    }
+    QToolButton::mousePressEvent(event);
+}
+
+void LongPressSwitchToolButton::mouseReleaseEvent(QMouseEvent* event) {
+    const bool left = (event->button() == Qt::LeftButton);
+    if (left && m_timer->isActive()) {
+        m_timer->stop();
+    }
+    const bool hadLongPress = left && m_longPressEmittedForThisPress;
+    QToolButton::mouseReleaseEvent(event);
+    if (hadLongPress) {
+        m_longPressEmittedForThisPress = false;
+        if (isDown()) {
+            setDown(false);
+        }
+        update();
+    }
+}

client/gui/widgets/LongPressSwitchToolButton.h

@@ -0,0 +1,32 @@
+#pragma once
+
+#include <QToolButton>
+
+class QMouseEvent;
+class QTimer;
+
+/**
+ * 可复用的工具栏按钮：短按行为与普通 QToolButton 一致；
+ * 左键按住超过设定时间（默认 450ms）且仍未松开时发出 longPressTriggered()，
+ * 用于在「同一工具钮」上切换子模式（类似 Photoshop 长按切换同类工具）。
+ */
+class LongPressSwitchToolButton final : public QToolButton {
+    Q_OBJECT
+public:
+    explicit LongPressSwitchToolButton(QWidget* parent = nullptr);
+
+    void setLongPressInterval(int ms);
+    int longPressInterval() const { return m_intervalMs; }
+
+signals:
+    void longPressTriggered();
+
+protected:
+    void mousePressEvent(QMouseEvent* event) override;
+    void mouseReleaseEvent(QMouseEvent* event) override;
+
+private:
+    QTimer* m_timer = nullptr;
+    int m_intervalMs = 450;
+    bool m_longPressEmittedForThisPress = false;
+};

client/gui/widgets/ToolOptionPopup.cpp

@@ -0,0 +1,55 @@
+#include "widgets/ToolOptionPopup.h"
+
+#include <QBoxLayout>
+#include <QPushButton>
+#include <QToolButton>
+
+ToolOptionPopup::ToolOptionPopup(QWidget* parent)
+    : QFrame(parent) {
+    setWindowFlags(Qt::Popup | Qt::FramelessWindowHint);
+    setFrameShape(QFrame::StyledPanel);
+    setObjectName(QStringLiteral("ToolOptionPopup"));
+    setStyleSheet(QStringLiteral(
+        "#ToolOptionPopup { background: palette(base); border: 1px solid palette(mid); border-radius: 10px; }"
+        "#ToolOptionPopup QPushButton { border: 1px solid transparent; padding: 8px 10px; text-align: left; }"
+        "#ToolOptionPopup QPushButton:hover { background: palette(midlight); }"));
+}
+
+void ToolOptionPopup::setOptions(const QVector<Option>& opts) {
+    m_options = opts;
+    rebuildUi();
+}
+
+void ToolOptionPopup::rebuildUi() {
+    QLayout* old = layout();
+    if (old) {
+        delete old;
+    }
+    auto* root = new QVBoxLayout(this);
+    root->setContentsMargins(8, 8, 8, 8);
+    root->setSpacing(6);
+    for (const auto& opt : m_options) {
+        auto* b = new QPushButton(opt.text, this);
+        b->setFlat(true);
+        connect(b, &QPushButton::clicked, this, [this, id = opt.id]() {
+            emit optionChosen(id);
+            close();
+        });
+        root->addWidget(b);
+    }
+}
+
+void ToolOptionPopup::popupNearToolButton(QToolButton* btn) {
+    if (!btn) {
+        return;
+    }
+    if (!layout()) {
+        rebuildUi();
+    }
+    adjustSize();
+    const QPoint g = btn->mapToGlobal(QPoint(btn->width(), 0));
+    move(g.x() + 6, g.y());
+    show();
+    raise();
+}
+

client/gui/widgets/ToolOptionPopup.h

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+#pragma once
+
+#include <QFrame>
+#include <QString>
+#include <QVector>
+
+class QToolButton;
+
+/// 可复用的“按钮弹出选项面板”（Qt::Popup），用于同一工具按钮选择子模式。
+class ToolOptionPopup final : public QFrame {
+    Q_OBJECT
+public:
+    struct Option {
+        int id = 0;
+        QString text;
+    };
+
+    explicit ToolOptionPopup(QWidget* parent = nullptr);
+
+    void setOptions(const QVector<Option>& opts);
+    void popupNearToolButton(QToolButton* btn);
+
+signals:
+    void optionChosen(int id);
+
+private:
+    void rebuildUi();
+
+private:
+    QVector<Option> m_options;
+};
+