// Created on: 1996-01-26
// Created by: PLOTNIKOV Eugeny
// Copyright (c) 1996-1999 Matra Datavision
// Copyright (c) 1999-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.

#ifndef _WNT_Window_HeaderFile
#define _WNT_Window_HeaderFile

#include <Aspect_Window.hxx>

#if defined(_WIN32) && !defined(OCCT_UWP)

#include <Aspect_Drawable.hxx>
#include <Aspect_VKey.hxx>
#include <Aspect_Handle.hxx>
#include <WNT_Dword.hxx>

class Aspect_WindowInputListener;
class WNT_WClass;
typedef struct tagMSG MSG;

DEFINE_STANDARD_HANDLE(WNT_Window, Aspect_Window)

//! This class defines Windows NT window
class WNT_Window : public Aspect_Window
{
  DEFINE_STANDARD_RTTIEXT(WNT_Window, Aspect_Window)
public:

  //! Convert WInAPI virtual key (VK_ enumeration) into Aspect_VKey.
  Standard_EXPORT static Aspect_VKey VirtualKeyFromNative (Standard_Integer theKey);

  //! Convert WPARAM from mouse event to key flags.
  Standard_EXPORT static Aspect_VKeyFlags MouseKeyFlagsFromEvent (WPARAM theKeys);

  //! Convert WPARAM from mouse event to mouse buttons bitmask.
  Standard_EXPORT static Aspect_VKeyMouse MouseButtonsFromEvent (WPARAM theKeys);

  //! Use GetAsyncKeyState() to fetch actual mouse key flags regardless of event loop.
  Standard_EXPORT static Aspect_VKeyFlags MouseKeyFlagsAsync();

  //! Use GetAsyncKeyState() to fetch actual mouse buttons state regardless of event loop.
  Standard_EXPORT static Aspect_VKeyMouse MouseButtonsAsync();

public:

  //! Creates a Window defined by his position and size in pixels from the Parent Window.
  //! Trigger: Raises WindowDefinitionError if the Position out of the Screen Space or the window creation failed.
  Standard_EXPORT WNT_Window (const Standard_CString theTitle,
                              const Handle(WNT_WClass)& theClass,
                              const WNT_Dword& theStyle,
                              const Standard_Integer thePxLeft,  const Standard_Integer thePxTop,
                              const Standard_Integer thePxWidth, const Standard_Integer thePxHeight,
                              const Quantity_NameOfColor theBackColor = Quantity_NOC_MATRAGRAY,
                              const Aspect_Handle theParent = 0,
                              const Aspect_Handle theMenu = 0,
                              const Standard_Address theClientStruct = 0);

  //! Creates a Window based on the existing window handle.
  Standard_EXPORT WNT_Window (const Aspect_Handle theHandle,
                              const Quantity_NameOfColor theBackColor = Quantity_NOC_MATRAGRAY);

  //! Destroys the Window and all resources attached to it.
  Standard_EXPORT virtual ~WNT_Window();

  //! Sets cursor for ENTIRE WINDOW CLASS to which the Window belongs.
  Standard_EXPORT void SetCursor (const Aspect_Handle theCursor) const;

  //! Opens the window <me>.
  Standard_EXPORT virtual void Map() const Standard_OVERRIDE;
  
  //! Opens a window according to the map mode.
  //! This method is specific to Windows NT.
  //! @param theMapMode [in] can be one of SW_xxx constants defined in <windows.h>
  Standard_EXPORT void Map (const Standard_Integer theMapMode) const;

  //! Closes the window <me>.
  Standard_EXPORT virtual void Unmap() const Standard_OVERRIDE;
  
  //! Applies the resizing to the window <me>.
  Standard_EXPORT virtual Aspect_TypeOfResize DoResize() Standard_OVERRIDE;
  
  //! Does nothing on Windows.
  virtual Standard_Boolean DoMapping() const Standard_OVERRIDE { return Standard_True; }

  //! Changes variables due to window position.
  Standard_EXPORT void SetPos (const Standard_Integer X, const Standard_Integer Y, const Standard_Integer X1, const Standard_Integer Y1);
  
  //! Returns True if the window <me> is opened
  //! and False if the window is closed.
  Standard_EXPORT virtual Standard_Boolean IsMapped() const Standard_OVERRIDE;
  
  //! Returns The Window RATIO equal to the physical
  //! WIDTH/HEIGHT dimensions.
  Standard_EXPORT virtual Standard_Real Ratio() const Standard_OVERRIDE;
  
  //! Returns The Window POSITION in PIXEL
  Standard_EXPORT virtual void Position (Standard_Integer& X1, Standard_Integer& Y1, Standard_Integer& X2, Standard_Integer& Y2) const Standard_OVERRIDE;
  
  //! Returns The Window SIZE in PIXEL
  Standard_EXPORT virtual void Size (Standard_Integer& Width, Standard_Integer& Height) const Standard_OVERRIDE;
  
  //! Returns native Window handle (HWND)
  virtual Aspect_Drawable NativeHandle() const Standard_OVERRIDE { return (Aspect_Drawable )myHWindow; }
  
  //! Returns parent of native Window handle (HWND on Windows).
  virtual Aspect_Drawable NativeParentHandle() const Standard_OVERRIDE { return (Aspect_Drawable )myHParentWindow; }

  //! Returns nothing on Windows
  virtual Aspect_FBConfig NativeFBConfig() const Standard_OVERRIDE { return NULL; }

  //! Sets window title.
  Standard_EXPORT virtual void SetTitle (const TCollection_AsciiString& theTitle) Standard_OVERRIDE;

  //! Invalidate entire window content by calling InvalidateRect() WinAPI function, resulting in WM_PAINT event put into window message loop.
  //! Method can be called from non-window thread, and system will also automatically aggregate multiple events into single one.
  Standard_EXPORT virtual void InvalidateContent (const Handle(Aspect_DisplayConnection)& theDisp = Handle(Aspect_DisplayConnection)()) Standard_OVERRIDE;

public:

  //! Returns the Windows NT handle of the created window <me>.
  Aspect_Handle HWindow() const { return myHWindow; }

  //! Returns the Windows NT handle parent of the created window <me>.
  Aspect_Handle HParentWindow() const { return myHParentWindow; }

  //! Raw input flags.
  enum RawInputMask
  {
    RawInputMask_Mouse      = 0x01, //!< HID_USAGE_GENERIC_MOUSE
    RawInputMask_SpaceMouse = 0x02, //!< HID_USAGE_GENERIC_MULTI_AXIS_CONTROLLER
  };

  //! RegisterRawInputDevices() wrapper.
  //! @param theRawDeviceMask [in] mask of RawInputMask flags
  //! @return number of actually registered device types
  Standard_EXPORT int RegisterRawInputDevices (unsigned int theRawDeviceMask);

  //! Process a single window message.
  //! @param theListener [in][out] listener to redirect message
  //! @param theMsg [in][out] message to process
  //! @return TRUE if message has been processed
  Standard_EXPORT virtual bool ProcessMessage (Aspect_WindowInputListener& theListener,
                                               MSG& theMsg);

private:

  class TouchInputHelper;

protected:

  Handle(WNT_WClass) myWClass;
  Handle(TouchInputHelper) myTouchInputHelper;
  Aspect_Handle    myHWindow;
  Aspect_Handle    myHParentWindow;
  Standard_Integer myXLeft;
  Standard_Integer myYTop;
  Standard_Integer myXRight;
  Standard_Integer myYBottom;
  Standard_Boolean myIsForeign;

};

#endif // _WIN32
#endif // _WNT_Window_HeaderFile