cvExpanderButton.h

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// ----------------------------------------------------------------------------
// -                        CloudViewer: www.cloudViewer.org                  -
// ----------------------------------------------------------------------------
// Copyright (c) 2018-2024 www.cloudViewer.org
// SPDX-License-Identifier: MIT
// ----------------------------------------------------------------------------
 
#pragma once
 
#include <QFrame>
#include <QHBoxLayout>
#include <QLabel>
#include <QPixmap>
 
#include "qPCL.h"
 
class QPCL_ENGINE_LIB_API cvExpanderButton : public QFrame {
    Q_OBJECT
 
    Q_PROPERTY(QString text READ text WRITE setText)
    Q_PROPERTY(bool checked READ checked WRITE setChecked)
 
public:
    explicit cvExpanderButton(QWidget* parent = nullptr);
    ~cvExpanderButton() override;
 
public slots:
    void toggle();
 
    void setChecked(bool checked);
    bool checked() const { return m_checked; }
 
    void setText(const QString& text);
    QString text() const;
 
signals:
    void toggled(bool checked);
 
protected:
    void mousePressEvent(QMouseEvent* evt) override;
    void mouseReleaseEvent(QMouseEvent* evt) override;
 
private:
    void setupUi();
    void updateIcon();
 
private:
    QHBoxLayout* m_layout;
    QLabel* m_iconLabel;
    QLabel* m_textLabel;
 
    bool m_checked;
    bool m_pressed;
 
    QPixmap m_checkedPixmap;    // Minus icon (expanded)
    QPixmap m_uncheckedPixmap;  // Plus icon (collapsed)
};