layout.h

#ifndef LAYOUT_H
#define LAYOUT_H

#include <opencv2/core.hpp>
#include <memory>
#include "widget.h"

namespace canvascv
{

class Layout
{
protected:
    virtual void addWidget(const std::shared_ptr<Widget> &widget) = 0;

    virtual std::shared_ptr<Widget> rmvWidget(const std::shared_ptr<Widget> &widget) = 0;

    friend class WidgetFactory;
    template <class T> friend class WidgetFactoryT;
    friend class Widget;

    virtual std::shared_ptr<Widget> rmvWidget(Widget* widget) = 0;

    // returns the growth limit as calculated by the layout
    virtual const cv::Rect getBoundaries() const = 0;

    virtual bool addDirtyWidget(Widget *widget) = 0;
    virtual void rmvDirtyWidget(Widget *widget) = 0;

    virtual bool hasDirtyWidgets() = 0;

    virtual void updateDirtyWidgets() = 0;
};

}

#endif // LAYOUT_H