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/*  Visualization Library                                                             */
/*  http://visualizationlibrary.org                                                   */
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/*  Copyright (c) 2005-2011, Michele Bosi                                             */
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#ifndef EGL_Window_INCLUDE_ONCE
#define EGL_Window_INCLUDE_ONCE

#include <vlEGL/link_config.hpp>
#include <vlGraphics/OpenGLContext.hpp>
#include <EGL/egl.h>
#include <map>

namespace vlEGL
{
//-----------------------------------------------------------------------------
  VLEGL_EXPORT int messageLoop();
  VLEGL_EXPORT void peekMessage(MSG& msg);
  VLEGL_EXPORT void dispatchUpdate();
//-----------------------------------------------------------------------------
// EGLWindow
//-----------------------------------------------------------------------------
  class VLEGL_EXPORT EGLWindow: public vl::OpenGLContext
  {
  public:
    static const wchar_t* EGLWindowClassName;
    static LONG WINAPI WindowProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam);

  public:
    EGLWindow();
    ~EGLWindow();

    // *** OpenGLContext implementation ***

    void swapBuffers();
    void makeCurrent();
    void update();
    void quitApplication();
    void setMouseVisible(bool visible);
    void setPosition(int x, int y);
    void setSize(int w, int h);
    void setWindowSize(int w, int h);
    vl::ivec2 position() const;
    vl::ivec2 windowSize() const;
    vl::ivec2 size() const;
    void setWindowTitle(const vl::String& title);
    void show();
    void hide();
    void getFocus();
    void setMousePosition(int x, int y);

    bool initEGLWindow(HWND parent, const vl::String& title, const vl::OpenGLContextFormat& fmt, int x=0, int y=0, int width=640, int height=480);

    void destroyEGLGLWindow();

    HWND  hwnd()  const { return mHWND;  }

    DWORD style() const { return mStyle; }

    void setStyle(DWORD style) { mStyle = style; }

    DWORD exStyle() const { return mStyle; }

    void setExStyle(DWORD ex_style) { mStyle = ex_style; }

    const wchar_t* windowClassName() const { return mWindowClassName; }

    void setWindowClassName(const wchar_t* name) { mWindowClassName = name; }

    const EGLDisplay& eglDisplay() const { return mEGL_Display; }
    const EGLContext& eglContext() const { return mEGL_Context; }
    const EGLSurface& eglSurface() const { return mEGL_Surface; }

  protected:
    int   mMouseDownCount;
    HWND  mHWND;
    DWORD mStyle;
    DWORD mExStyle;
    const wchar_t* mWindowClassName;
    
    EGLDisplay mEGL_Display;
    EGLContext mEGL_Context;
    EGLSurface mEGL_Surface;

    // *** static members start here ***

  public:
    static EGLWindow* getWindow(HWND hWnd);
    static const std::map< HWND, EGLWindow* >& winMap() { return mWinMap; }

  protected:
    static std::map< HWND, EGLWindow* > mWinMap;
  };
//-----------------------------------------------------------------------------
  VLEGL_EXPORT void translateKeyEvent(WPARAM wParam, LPARAM lParam, unsigned short& unicode_out, vl::EKey& key_out);
//-----------------------------------------------------------------------------
}

#endif