/*=========================================================================  Program:   Visualization Toolkit  Module:    $RCSfile: vtkMDIView.cpp,v $  Language:  C++  Date:      $Date: 2003/02/06 18:20:11 $  Version:   $Revision: 1.2 $  Copyright (c) 1993-2002 Ken Martin, Will Schroeder, Bill Lorensen   All rights reserved.  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.     This software is distributed WITHOUT ANY WARRANTY; without even      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR      PURPOSE.  See the above copyright notice for more information.=========================================================================*/#include "stdafx.h"#include "vtkMDI.h"#include "vtkMDIDoc.h"#include "vtkMDIView.h"#include "vtkTextProperty.h"#ifdef _DEBUG#define new DEBUG_NEW#undef THIS_FILEstatic char THIS_FILE[] = __FILE__;#endif/////////////////////////////////////////////////////////////////////////////// CVtkMDIViewIMPLEMENT_DYNCREATE(CVtkMDIView, CView)BEGIN_MESSAGE_MAP(CVtkMDIView, CView)  //{{AFX_MSG_MAP(CVtkMDIView)  ON_WM_SIZE()  ON_WM_ERASEBKGND()  ON_WM_CREATE()  //}}AFX_MSG_MAP  // Standard printing commands  ON_COMMAND(ID_FILE_PRINT, CView::OnFilePrint)  ON_COMMAND(ID_FILE_PRINT_DIRECT, CView::OnFilePrint)  ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView::OnFilePrintPreview)END_MESSAGE_MAP()/////////////////////////////////////////////////////////////////////////////// CVtkMDIView construction/destructionCVtkMDIView::CVtkMDIView(){  // Create the the renderer, window and interactor objects.  this->ren = vtkRenderer::New();  this->renWin = vtkWin32OpenGLRenderWindow::New();  this->iren = vtkWin32RenderWindowInteractor::New();    // Create the the objects used to form the visualisation.  this->Mapper = vtkDataSetMapper::New();  this->Actor = vtkActor::New();  this->txtActor = vtkActor2D::New();  this->txtMapper = vtkTextMapper::New();}CVtkMDIView::~CVtkMDIView(){  // Delete the the renderer, window and interactor objects.    this->ren->Delete();    this->iren->Delete();    this->renWin->Delete();  // Delete the the objects used to form the visualisation.  this->Mapper->Delete();  this->Actor->Delete();  this->txtActor->Delete();  this->txtMapper->Delete();}BOOL CVtkMDIView::PreCreateWindow(CREATESTRUCT& cs){  // TODO: Modify the Window class or styles here by modifying  //  the CREATESTRUCT cs  return CView::PreCreateWindow(cs);}/////////////////////////////////////////////////////////////////////////////// CVtkMDIView drawing/*! * Based on a comment from Klaus Nowikow in vtkusers list.  * <http://public.kitware.com/pipermail/vtkusers/1999-August/001852.html> * * Here we intialise the interactor and set up for printing and displaying. * * @param pDC :  * * @return void  :  */void CVtkMDIView::OnDraw(CDC* pDC){  CVtkMDIDoc* pDoc = GetDocument();  ASSERT_VALID(pDoc);  if ( !this->iren->GetInitialized() )  {    CRect rect;    this->GetClientRect(&rect);    this->iren->Initialize();    this->renWin->SetSize(rect.right-rect.left,rect.bottom-rect.top);    this->ren->ResetCamera();  }  // Invoke the pipeline  Pipeline();  if ( pDC->IsPrinting() )  {    this->BeginWaitCursor();    // Obtain the size of the printer page in pixels.    int cxPage = pDC->GetDeviceCaps(HORZRES);    int cyPage = pDC->GetDeviceCaps(VERTRES);    // Get the size of the window in pixels.    int *size = this->renWin->GetSize();    int cxWindow = size[0];    int cyWindow = size[1];    float fx = float(cxPage) / float(cxWindow);    float fy = float(cyPage) / float(cyWindow);    float scale = min(fx,fy);    int x = int(scale * float(cxWindow));    int y = int(scale * float(cyWindow));    this->renWin->SetupMemoryRendering(cxWindow, cyWindow, pDC->GetSafeHdc());    this->renWin->Render();    HDC memDC = this->renWin->GetMemoryDC();    StretchBlt(pDC->GetSafeHdc(),0,0,x,y,memDC,0,0,cxWindow,cyWindow,SRCCOPY);    this->renWin->ResumeScreenRendering();    this->EndWaitCursor();  }  else  {    this->renWin->Render();  }}/////////////////////////////////////////////////////////////////////////////// CVtkMDIView printingBOOL CVtkMDIView::OnPreparePrinting(CPrintInfo* pInfo){  // default preparation  return DoPreparePrinting(pInfo);}void CVtkMDIView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/){  // TODO: add extra initialization before printing}void CVtkMDIView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/){  // TODO: add cleanup after printing}/////////////////////////////////////////////////////////////////////////////// CVtkMDIView diagnostics#ifdef _DEBUGvoid CVtkMDIView::AssertValid() const{  CView::AssertValid();}void CVtkMDIView::Dump(CDumpContext& dc) const{  CView::Dump(dc);}CVtkMDIDoc* CVtkMDIView::GetDocument() // non-debug version is inline{  ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CVtkMDIDoc)));  return (CVtkMDIDoc*)m_pDocument;}#endif //_DEBUG/////////////////////////////////////////////////////////////////////////////// CVtkMDIView message handlers/*! * Resize the render window to that of the view window. * * @param nType :  * @param cx :  * @param cy :  * * @return void  :  */void CVtkMDIView::OnSize(UINT nType, int cx, int cy) {  CView::OnSize(nType, cx, cy);    CRect rect;  this->GetClientRect(&rect);  this->renWin->SetSize(rect.right-rect.left,rect.bottom-rect.top);  }/*!  * Based on a comment from Nigel Nunn in vtkusers list.  * <http://public.kitware.com/pipermail/vtkusers/2001-May/006371.html> * * Overriding OnEraseBkgnd() stops that horrible  * flickering on resizing.  The Renderer likes to do  * such things itself!  * * @param pDC :  * * @return BOOL  :  */BOOL CVtkMDIView::OnEraseBkgnd(CDC* pDC) {  return TRUE;}/*! * Add the renderer to the vtk window and link the wiew to the vtk window. * We assume that the objects have been already  * created in the constructor. * * @param lpCreateStruct :  * * @return int  :  */int CVtkMDIView::OnCreate(LPCREATESTRUCT lpCreateStruct) {  if (CView::OnCreate(lpCreateStruct) == -1)    return -1;    this->renWin->AddRenderer(this->ren);  // setup the parent window  this->renWin->SetParentId(this->m_hWnd);  this->iren->SetRenderWindow(this->renWin);      return 0;}/*! * Allow the interactor to interact with the keyboard. * * @param message :  * @param wParam :  * @param lParam :  * * @return LRESULT  :  */LRESULT CVtkMDIView::WindowProc(UINT message, WPARAM wParam, LPARAM lParam) {  switch (message)  {    //case WM_PAINT:     case WM_LBUTTONDOWN:     case WM_LBUTTONUP:     case WM_MBUTTONDOWN:     case WM_MBUTTONUP:     case WM_RBUTTONDOWN:     case WM_RBUTTONUP:     case WM_MOUSEMOVE:    case WM_CHAR:    case WM_TIMER:      if (this->iren->GetInitialized())      {        return vtkHandleMessage2(this->m_hWnd, message, wParam, lParam, this->iren);      }      break;  }     return CView::WindowProc(message, wParam, lParam);}/*! * This is the pipeline that creates the object for  * rendering on the screen. * Here is where we create the pipeline. * We assume that the objects have been already  * created in the constructor and that the  * renderer, window and interactor have been already * initialised in OnCreate() * * @param none * * @return void  :  */void CVtkMDIView::Pipeline(){  if ( this->GetDocument()->HasAFile )  {    this->Mapper->SetInput(this->GetDocument()->Reader->GetOutput());    this->Actor->SetMapper(this->Mapper);    this->txtMapper->SetInput(this->GetDocument()->Reader->GetFileName());    this->txtMapper->GetTextProperty()->SetFontSize(12);    this->txtActor->SetMapper(this->txtMapper);    this->ren->SetBackground(0.2,0.5,0.3);    this->ren->AddActor(this->Actor);    this->ren->AddActor(this->txtActor);  }  else  {    this->txtMapper->SetInput("Hello World");    this->txtMapper->GetTextProperty()->SetFontSize(24);    this->txtActor->SetMapper(this->txtMapper);    this->ren->SetBackground(0.2,0.5,0.3);    this->ren->AddActor(this->txtActor);  }}