ecvPickingHub.h

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// ----------------------------------------------------------------------------
// -                        CloudViewer: www.cloudViewer.org                  -
// ----------------------------------------------------------------------------
// Copyright (c) 2018-2024 www.cloudViewer.org
// SPDX-License-Identifier: MIT
// ----------------------------------------------------------------------------
 
#pragma once
 
#include "CVPluginAPI.h"
 
// Local
#include "ecvPickingListener.h"
 
// CV_DB_LIB
#include <ecvDisplayTools.h>
 
// Qt
#include <QObject>
 
// system
#include <set>
 
class ccHObject;
class QMdiSubWindow;
class ecvMainAppInterface;
 
class CVPLUGIN_LIB_API ccPickingHub : public QObject {
    Q_OBJECT
 
public:
    ccPickingHub(ecvMainAppInterface* app, QObject* parent = nullptr);
    ~ccPickingHub() override = default;
 
    inline size_t listenerCount() const { return m_listeners.size(); }
 
 
    bool addListener(ccPickingListener* listener,
                     bool exclusive = false,
                     bool autoStartPicking = true,
                     ecvDisplayTools::PICKING_MODE mode =
                             ecvDisplayTools::POINT_OR_TRIANGLE_PICKING);
 
 
    void removeListener(ccPickingListener* listener,
                        bool autoStopPickingIfLast = true);
 
    //  //! Sets the default picking mode
    //  /** \param mode picking mode
    //      \param autoEnableOnActivatedWindow whether picking mode should
    // be enabled automatically on newly activated windows (if listeners are
    // present only)
    //  **/
    // DGM: too dangerous, we can't change this behavior on the fly
 
    void togglePickingMode(bool state);
 
    QWidget* activeWindow() const { return m_activeWindow; }
 
    bool isLocked() const { return m_exclusive && !m_listeners.empty(); }
 
public slots:
 
    void onActiveWindowChanged(QMdiSubWindow*);
    void onActiveWindowDeleted(QObject*);
    void processPickedItem(ccHObject*, unsigned, int, int, const CCVector3&);
 
protected:
    std::set<ccPickingListener*> m_listeners;
 
    ecvMainAppInterface* m_app;
 
    QWidget* m_activeWindow;
 
    ecvDisplayTools::PICKING_MODE m_pickingMode;
 
    bool m_autoEnableOnActivatedWindow;
 
    bool m_exclusive;
};