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/*  Visualization Library                                                             */
/*  http://visualizationlibrary.org                                                   */
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/*  Copyright (c) 2005-2010, Michele Bosi                                             */
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#ifndef FlatManipulator_INCLUDE_ONCE
#define FlatManipulator_INCLUDE_ONCE

#include <vlCore/Vector3.hpp>
#include <vlCore/Vector4.hpp>
#include <vlGraphics/UIEventListener.hpp>
#include <vlGraphics/Camera.hpp>
#include <vlGraphics/Geometry.hpp>

// mic fixme: clean up this mess

namespace vl
{

  //------------------------------------------------------------------------------
  // FlatManipulator
  //------------------------------------------------------------------------------
class FlatManipulator: public UIEventListener
{
  VL_INSTRUMENT_CLASS(vl::FlatManipulator, UIEventListener)

  public:
    typedef enum { NoMode, TranslationMode, ZoomMode } EManipMode;

    FlatManipulator();

    // --- UIEventListener ---

    virtual void mouseDownEvent(EMouseButton, int x, int y);

    virtual void mouseUpEvent(EMouseButton, int x, int y);

    virtual void mouseMoveEvent(int x, int y);

    virtual void enableEvent(bool enabled);

    virtual void initEvent() {}

    virtual void destroyEvent() {}

    virtual void updateEvent() {}

    virtual void addedListenerEvent(OpenGLContext*) {}

    virtual void removedListenerEvent(OpenGLContext*) {}

    virtual void mouseWheelEvent(int) {}

    virtual void keyPressEvent(unsigned short, EKey) {}

    virtual void keyReleaseEvent(unsigned short, EKey) {}

    virtual void resizeEvent(int, int) {}

    virtual void fileDroppedEvent(const std::vector<String>&) {}

    virtual void visibilityEvent(bool) {}

    // --- user methods ---

    void setCamera(Camera* camera);

    Camera* camera() { return mCamera.get(); }

    int zoomButton() const { return mZoomButton; }

    void setZoomButton(int mouse_button) { mZoomButton = mouse_button; }

    int translationButton() const { return mTranslationButton; }

    void setTranslationButton(int mouse_button) { mTranslationButton = mouse_button; }

    float zoomSpeed() const { return mZoomSpeed; }

    void setZoomSpeed(float speed) { mZoomSpeed = speed; }

    EManipMode mode() const { return mMode; }

  protected:

    bool mouseInViewport(int mx, int my, int& vx, int& vy);

  protected:
    ref<Camera> mCamera;
    vec2        mMouseStart;
    vec2        mPixelSize;
    EManipMode  mMode;
    int         mTranslationButton;
    int         mZoomButton;
    float       mZoomSpeed;
  };


vl::ref<vl::Geometry> makeScales(bool X = true,
                                 bool Y = true,
                                 bool Z = true,
                                 int numArmTicks = 50,
                                 float mmStep = 10,
                                 float mmTickSize = 4,
                                 vl::fvec4 color = vl::fvec4(1,1,1,1));
}

#endif