plain_drawer.h

/*****************************************************************************
 * VCLib                                                                     *
 * Visual Computing Library                                                  *
 *                                                                           *
 * Copyright(C) 2021-2025                                                    *
 * Visual Computing Lab                                                      *
 * ISTI - Italian National Research Council                                  *
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 * This program is free software; you can redistribute it and/or modify      *
 * it under the terms of the Mozilla Public License Version 2.0 as published *
 * by the Mozilla Foundation; either version 2 of the License, or            *
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 * This program is distributed in the hope that it will be useful,           *
 * but WITHOUT ANY WARRANTY; without even the implied warranty of            *
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the              *
 * Mozilla Public License Version 2.0                                        *
 * (https://www.mozilla.org/en-US/MPL/2.0/) for more details.                *
 ****************************************************************************/
 
#ifndef VCL_RENDER_DRAWERS_PLAIN_DRAWER_H
#define VCL_RENDER_DRAWERS_PLAIN_DRAWER_H
 
#include <vclib/types.h>
 
namespace vcl {
 
template<typename DerivedRenderApp>
class PlainDrawer
{
protected:
    using DRT = DerivedRenderApp;
 
public:
    PlainDrawer() = default;
 
    PlainDrawer(uint, uint) {}
 
    virtual void onInit(uint viewId) {}
 
    virtual void onResize(uint width, uint height) {}
 
    virtual void onDraw(uint viewId) { onDrawContent(viewId); }
 
    virtual void onDrawContent(uint viewId) {}
 
    virtual void onPostDraw() {}
 
protected:
    auto* derived() { return static_cast<DRT*>(this); }
 
    const auto* derived() const { return static_cast<const DRT*>(this); }
};
 
} // namespace vcl
 
#endif // VCL_RENDER_DRAWERS_PLAIN_DRAWER_H