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imaging/vtkWin32OpenGLImageWindow.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkWin32OpenGLImageWindow.h,v $
  Language:  C++


Copyright (c) 1993-2001 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 AUTHORS 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.

=========================================================================*/
#ifndef __vtkWin32OpenGLImageWindow_h
#define __vtkWin32OpenGLImageWindow_h

#include <stdlib.h>
#include "vtkImageWindow.h"
#include "vtkMutexLock.h"

class VTK_EXPORT vtkWin32OpenGLImageWindow : public vtkImageWindow
{
public:
  static vtkWin32OpenGLImageWindow *New();
  vtkTypeMacro(vtkWin32OpenGLImageWindow,vtkImageWindow);
  void PrintSelf(ostream& os, vtkIndent indent);

  // output to the viewer.
  vtkWin32OpenGLImageWindow *GetOutput(){return this;};

  virtual void MakeDefaultWindow();

  void SwapBuffers();

  void Frame();

  void Render();

  virtual void SetSize(int,int);

  virtual int *GetSize();

  virtual void SetPosition(int,int);
  
  virtual int *GetPosition();

  virtual void SetWindowName(char *);
  
  //BTX
  virtual void *GetGenericDisplayId() {return (void *)this->ContextId;};
  virtual void *GetGenericWindowId()  {return (void *)this->WindowId;};
  virtual void *GetGenericParentId()  {return (void *)this->ParentId;};
  virtual void *GetGenericContext()   {return (void *)this->DeviceContext;};
  virtual void SetDisplayId(void *) {};

  virtual HWND  GetWindowId();
  void  SetWindowId(void *foo) {this->SetWindowId((HWND)foo);};

  virtual void  SetWindowId(HWND);
  
  virtual void  SetParentId(HWND);
  void  SetParentId(void *foo) {this->SetParentId((HWND)foo);};

  void  SetContextId(HGLRC);  // hsr
  void  SetDeviceContext(HDC);   // hsr

  virtual void  SetNextWindowId(HWND);
  //ETX

  virtual unsigned char *GetPixelData(int x,int y,int x2,int y2,int front);
  virtual void SetPixelData(int x,int y,int x2,int y2,unsigned char *,
             int front);

  virtual float *GetRGBAPixelData(int x,int y,int x2,int y2,int front);
  virtual void SetRGBAPixelData(int x,int y,int x2,int y2,float *,int front,
                                int blend=0);
  virtual void ReleaseRGBAPixelData(float *data);

  void MakeCurrent();

  void SetupMemoryRendering(int x, int y, HDC prn);
  void ResumeScreenRendering();
  HDC GetMemoryDC();
  unsigned char *GetMemoryData(){return this->MemoryData;};  
  
  virtual void OpenGLInit();
  virtual void SetupPalette(HDC hDC);
  virtual void SetupPixelFormat(HDC hDC, DWORD dwFlags, int debug, 
            int bpp=16, int zbpp=16);
  
  void Clean();

protected:
  vtkWin32OpenGLImageWindow();
  ~vtkWin32OpenGLImageWindow();
  vtkWin32OpenGLImageWindow(const vtkWin32OpenGLImageWindow&) {};
  void operator=(const vtkWin32OpenGLImageWindow&) {};

  HINSTANCE ApplicationInstance;
  HPALETTE  Palette;
  HPALETTE  OldPalette;
  HGLRC     ContextId;
  HDC       DeviceContext;
  HWND      WindowId;
  HWND      ParentId;
  HWND      NextWindowId;
  int       OwnWindow;
  int       ScreenSize[2];

  // 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 ScreenDoubleBuffer;
  HGLRC ScreenContextId;

  //BTX
  // message handler
  virtual LRESULT MessageProc(HWND hWnd, UINT message, 
               WPARAM wParam, LPARAM lParam);

  static LRESULT APIENTRY WndProc(HWND hWnd, UINT message, 
              WPARAM wParam, LPARAM lParam);
  //ETX
  
};


#endif

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