/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkWin32ImageWindow.h
  Language:  C++
  Date:      $Date$
  Version:   $Revision$
  Thanks:    Thanks to Matt Turek who developed this class.

Copyright (c) 1993-2000 Ken Martin, Will Schroeder, Bill Lorensen 
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

 * Redistributions of source code must retain the above copyright notice,
   this list of conditions and the following disclaimer.

 * Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.

 * Neither name of Ken Martin, Will Schroeder, or Bill Lorensen nor the names
   of any contributors may be used to endorse or promote products derived
   from this software without specific prior written permission.

 * Modified source versions must be plainly marked as such, and must not be
   misrepresented as being the original software.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

=========================================================================*/
// .NAME vtkWin32ImageWindow - 2D display window for Windows
// .SECTION Description
// vtkWin32ImageWindow is a concrete subclass of vtkImageWindow.
// It handles 2D rendering under windows.

// .SECTION See Also
// vtkImageWindow

#ifndef __vtkWin32ImageWindow_h
#define __vtkWin32ImageWindow_h


#include 	"vtkImageWindow.h"

class VTK_EXPORT vtkWin32ImageWindow : public vtkImageWindow 
{
public:
  HINSTANCE ApplicationInstance;
  HPALETTE  Palette;
  HDC       DeviceContext;
  HWND      WindowId;
  HWND      ParentId;

  static vtkWin32ImageWindow *New();
  vtkTypeMacro(vtkWin32ImageWindow,vtkImageWindow);
  void PrintSelf(ostream& os, vtkIndent indent);

  // Description:
  // Swap the front and back buffers. Normally not called by the user.
  // Double buffering is not supported in this class.
  void SwapBuffers();
  
  // Description:
  // Flush and swap buffers if necessary. Double buffering is not
  // supported in this class.
  void Frame();

  // output to the viewer.
  vtkWin32ImageWindow *GetOutput(){return this;};
  
  //BTX

  // Description:
  // Set/Get the window id and parent window id.
  HWND GetWindowId(); 
  void SetWindowId(void* id) {this->WindowId = (HWND) id;};
  void SetParentId(void* id) {this->ParentId = (HWND) id;};
  void SetWindowId(HWND);
  void SetParentId(HWND);

  void SetDeviceContext(void* dc) {this->DeviceContext = (HDC) dc;};
  void SetDeviceContext(HDC);
  void SetDisplayId(void *foo) {vtkDebugMacro(<<"SetDisplayID not implemented");};

  void *GetGenericDisplayId() 
        {vtkDebugMacro(<<"Display ID not implemented in Win32."); return (void*) NULL;};
  void *GetGenericWindowId() {return (void*) this->WindowId;};
  void *GetGenericParentId() {return (void*) this->ParentId;};
  void *GetGenericContext() {return (void*) this->DeviceContext;};
  //ETX

  // Description:
  // Set/Get the current size of the window.
  void   SetSize(int,int);
  int   *GetSize();

  // Description:
  // Set/Get the position in screen coordinates of the window.
  int   *GetPosition();
  void   SetPosition(int,int);

  // Description:
  // Set the desired background color for the window.
  void SetBackgroundColor(float r, float g, float b);

  // Description:
  // Erase the window. Normally nor called by the user.
  void EraseWindow();

  unsigned char *GetDIBPtr();
  unsigned char *GetPixelData(int x1, int y1, int x2, int y2, int);
  
  // Description:
  // Creates a Win32 window or sets up an existing window.
  void MakeDefaultWindow();  

  // Description:
  // These methods can be used by MFC applications 
  // to support print preview and printing, or more
  // general rendering into memory. 
  void SetupMemoryRendering(int x, int y, HDC prn);
  void ResumeScreenRendering();
  HDC GetMemoryDC();
  unsigned char *GetMemoryData(){return this->MemoryData;};

protected:
  vtkWin32ImageWindow();
  ~vtkWin32ImageWindow();
  vtkWin32ImageWindow(const vtkWin32ImageWindow&) {};
  void operator=(const vtkWin32ImageWindow&) {};

  // the following is used to support rendering into memory
  BITMAPINFO MemoryDataHeader;
  HBITMAP MemoryBuffer;
  unsigned char *MemoryData;	// the data in the DIBSection
  HDC MemoryHdc;
  int ScreenMapped;
  int ScreenWindowSize[2];
  HDC ScreenDeviceContext;

  int OwnWindow; // do we create this window ?

  unsigned char *DIBPtr;	// the data in the DIBSection
  int SwapFlag;
  HDC CompatHdc;
  HDC OldHdc;
  HBITMAP BackBuffer;
  BITMAPINFO DataHeader;
};

#endif
