research/transmission_spectroscopy/TOF/Win32++/tutorials/Tutorial5/View.cpp

   1 //////////////////////////////////////////////\r
   2 // View.cpp\r
   3 //  Definitions for the CView class\r
   4 \r
   5 #include "view.h"\r
   6 #include "resource.h"\r
   7 \r
   8 \r
   9 CView::CView()\r
  10 {\r
  11 }\r
  12 \r
  13 void CView::DrawLine(int x, int y)\r
  14 {\r
  15         CClientDC dcClient(this);\r
  16         dcClient.MoveTo(m_points.back().x, m_points.back().y);\r
  17         dcClient.LineTo(x, y);\r
  18 }\r
  19 \r
  20 void CView::OnDraw(CDC* pDC)\r
  21 {\r
  22         if (m_points.size() > 0)\r
  23         {\r
  24                 bool bDraw = false;  //Start with the pen up\r
  25 \r
  26                 for (unsigned int i = 0 ; i < m_points.size(); i++)\r
  27                 {\r
  28                         if (bDraw) pDC->LineTo(m_points[i].x, m_points[i].y);\r
  29                         else pDC->MoveTo(m_points[i].x, m_points[i].y);\r
  30                         bDraw = m_points[i].PenDown;\r
  31                 }\r
  32         }\r
  33 }\r
  34 \r
  35 void CView::StorePoint(int x, int y, bool PenDown)\r
  36 {\r
  37         PlotPoint P1;\r
  38         P1.x = x;\r
  39         P1.y = y;\r
  40         P1.PenDown = PenDown;\r
  41 \r
  42         m_points.push_back(P1); //Add the point to the vector\r
  43 }\r
  44 \r
  45 void CView::OnLButtonDown(LPARAM lParam)\r
  46 {\r
  47         // Capture mouse input.\r
  48         SetCapture();\r
  49 \r
  50         StorePoint(GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam), true);\r
  51 }\r
  52 \r
  53 void CView::OnLButtonUp(LPARAM lParam)\r
  54 {\r
  55         {\r
  56                 //Release the capture on the mouse\r
  57                 ReleaseCapture();\r
  58 \r
  59                 StorePoint(GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam), false);\r
  60         }\r
  61 }\r
  62 \r
  63 void CView::OnMouseMove(WPARAM wParam, LPARAM lParam)\r
  64 {\r
  65         // hold down the left mouse button and move mouse to draw lines.\r
  66         if ( (wParam & MK_LBUTTON) && (GetCapture() == this) )\r
  67         {\r
  68                 DrawLine(GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam));\r
  69                 StorePoint(GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam), true);\r
  70         }\r
  71 }\r
  72 \r
  73 LRESULT CView::WndProc(UINT uMsg, WPARAM wParam, LPARAM lParam)\r
  74 {\r
  75         switch (uMsg)\r
  76         {\r
  77         case WM_LBUTTONDOWN:\r
  78                 OnLButtonDown(lParam);\r
  79                 break;\r
  80 \r
  81         case WM_MOUSEMOVE:\r
  82                 OnMouseMove(wParam, lParam);\r
  83         break;\r
  84 \r
  85     case WM_LBUTTONUP:\r
  86                 OnLButtonUp(lParam);\r
  87                 break;\r
  88 \r
  89         // Note: No need to handle WM_DESTROY. The frame does this for us.\r
  90         //      case WM_DESTROY:\r
  91         //      ::PostQuitMessage(0);\r
  92         //      break;\r
  93         }\r
  94 \r
  95         //Use the default message handling for remaining messages\r
  96         return WndProcDefault(uMsg, wParam, lParam);\r
  97 }\r
  98 \r
  99 \r
 100 \r
 101 \r