ExampleViewport.h

// Copyright (c) 2016 The Foundry Visionmongers Ltd. All Rights Reserved.

#ifndef EXAMPLEVIEWPORT_H_
#define EXAMPLEVIEWPORT_H_

#include <FnViewer/plugin/FnViewport.h>
#include <FnViewer/plugin/FnViewportLayer.h>
#include <FnViewer/plugin/FnEventWrapper.h>
#include <FnAttribute/FnAttribute.h>
#include <FnAttribute/FnGroupBuilder.h>
#include "GL/glew.h"
#include "ExampleViewerDelegate.h"

#include <map>
#include <string>

using Foundry::Katana::ViewerAPI::FnEventWrapper;
using Foundry::Katana::ViewerAPI::OptionIdGenerator;
using Foundry::Katana::ViewerAPI::ViewerDelegate;

class ExampleViewport : public Foundry::Katana::ViewerAPI::Viewport
{
public:
    ExampleViewport();
    ~ExampleViewport();

    static Foundry::Katana::ViewerAPI::Viewport* create();

    void setup();

    void cleanup();

    bool event(const FnEventWrapper& event);

    void draw();

    void resize(unsigned int width, unsigned int height);

    void setOption(OptionIdGenerator::value_type optionId,
        FnAttribute::Attribute attr);

    FnAttribute::Attribute getOption(
        OptionIdGenerator::value_type optionId);

    static void flush();

    void freeze();

    void thaw();

protected:
    void createDefaultCameras();

private:
    ExampleViewerDelegate* _getViewerDelegate();

    std::string _getEventDescription(const FnEventWrapper& event) const;

    void setupFramebuffer();
    void resizeFramebuffer();
    void resolveFramebuffer();
    void cleanupFramebuffer();

private:
    typedef std::map<OptionIdGenerator::value_type,
        FnAttribute::Attribute> AttrMap;
    AttrMap m_options;
    float _backgroundColor[3];

    GLuint m_framebuffer;
    GLuint m_colorRenderBuffer;
    GLuint m_depthRenderBuffer;
    unsigned int m_multisampleCount;
};

#endif  // EXAMPLEVIEWPORT_H_