video-pc/advanceddockingsystem/linux/floatingwidgettitlebar.h

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** Copyright (C) 2020 Uwe Kindler
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#pragma once

#include <QWidget>

namespace ADS {

class FloatingDockContainer;
struct FloatingWidgetTitleBarPrivate;

/**
 * Titlebar for floating widgets to capture non client are mouse events.
 * Linux does not support NonClieantArea mouse events like
 * QEvent::NonClientAreaMouseButtonPress. Because these events are required
 * for the docking system to work properly, we use our own titlebar here to
 * capture the required mouse events.
 */
class FloatingWidgetTitleBar : public QWidget
{
    Q_OBJECT
private:
    FloatingWidgetTitleBarPrivate *d; ///< private data (pimpl)

protected:
    virtual void mousePressEvent(QMouseEvent *event) override;
    virtual void mouseReleaseEvent(QMouseEvent *event) override;
    virtual void mouseMoveEvent(QMouseEvent *event) override;

public:
    using Super = QWidget;
    explicit FloatingWidgetTitleBar(FloatingDockContainer *parent = nullptr);

    /**
      * Virtual Destructor
      */
    virtual ~FloatingWidgetTitleBar() override;

    /**
      * Enables / disables the window close button.
      */
    void enableCloseButton(bool enable);

    /**
      * Sets the window title, that means, the text of the internal tile label.
      */
    void setTitle(const QString &text);

signals:
    /**
      * This signal is emitted, if the close button is clicked.
      */
    void closeRequested();
};

} // namespace ADS