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CircleTool.cpp
Package: TCAD.rar　[view]
Upload User: ggmm7909
Upload Date: 2008-11-12
Package Size: 80k
Code Size: 3k
Category:

Graph Drawing

Development Platform:

C/C++

CircleTool.cpp：Code Content
  1. // CircleTool.cpp: implementation of the CCircleTool class.
  2. //
  3. //////////////////////////////////////////////////////////////////////
  5. #include "stdafx.h"
  6. #include "CircleTool.h"
  7. #include "Circle.h"
  8. #include "WinApp.h"
  10. extern CWinApp g_theApp;
  11. //////////////////////////////////////////////////////////////////////
  12. // Construction/Destruction
  13. //////////////////////////////////////////////////////////////////////
  15. CCircleTool::CCircleTool()
  16. {
  18. }
  20. CCircleTool::~CCircleTool()
  21. {
  23. }
  25. void CCircleTool::OnMouseMove(HWND hWnd, UINT nFlags, POINT ptPos) 
  26. {
  27. CDataBase *pDataBase = &(g_theApp.m_DataBase);
  28. if(m_eToolState == FirstHit)
  29. {
  30. HDC  hdc      = ::GetDC(hWnd);
  31. int  nOldMode = ::SetROP2(hdc,R2_XORPEN);
  32. HPEN hPen     = ::CreatePen( pDataBase->m_Shape.fnPenStyle,
  33.              pDataBase->m_Shape.nWidth,
  34.      pDataBase->m_Shape.crColor^ GetBkColor(hdc) );
  35.  
  36.  
  37. HPEN hOldPen = (HPEN)::SelectObject(hdc,hPen);
  38. //不进行填充
  39. ::SelectObject(hdc,GetStockObject(NULL_BRUSH));
  41. //擦去前一次线段
  42. int nRadius = CDraw::Distance(m_ptBeginPos,m_ptPrePos );
  43. CDraw::DrawCircle(hdc,m_ptBeginPos,nRadius);
  45. //画出这一次线段
  46. nRadius = CDraw::Distance(m_ptBeginPos,ptPos );
  47. CDraw::DrawCircle(hdc,m_ptBeginPos,nRadius);
  49. ::SetROP2(hdc,nOldMode);
  50. ::SelectObject(hdc,hOldPen);
  51. ::DeleteObject(hPen);
  52. ::ReleaseDC(hWnd,hdc);
  54. m_ptPrePos = ptPos;
  55. }
  56. }
  58. void CCircleTool::OnRButtonDown(HWND hWnd,UINT nFlags, POINT ptPos)
  59. {
  60. CDataBase *pDataBase = &(g_theApp.m_DataBase);
  61. if(m_eToolState == FirstHit)
  62. {
  63. HDC  hdc      = ::GetDC(hWnd);
  64. int  nOldMode = ::SetROP2(hdc,R2_XORPEN);
  65. HPEN hPen     = ::CreatePen( pDataBase->m_Shape.fnPenStyle,
  66.              pDataBase->m_Shape.nWidth,
  67.      pDataBase->m_Shape.crColor^ GetBkColor(hdc) );
  69. ::SelectObject(hdc,hPen);
  70. //不进行填充
  71. ::SelectObject(hdc,GetStockObject(NULL_BRUSH));
  73. //擦除
  74. int nRadius = CDraw::Distance(m_ptBeginPos,m_ptPrePos );
  75. CDraw::DrawCircle(hdc,m_ptBeginPos,nRadius);
  77. ::SetROP2(hdc,nOldMode);
  78. ::ReleaseDC(hWnd,hdc);
  79. }
  80. //取消画图状态
  81. OverCurTool(hWnd);
  82. }
  84. void CCircleTool::OnLButtonDown(HWND hWnd,UINT nFlags, POINT ptPos)
  85. {
  86. CDataBase *pDataBase         = &(g_theApp.m_DataBase);
  87. CArray<CShape*> *pArrayShape = &(g_theApp.m_DataBase.m_ArrayShape);
  88. CCircle *pShape              = NULL;
  90. if(m_eToolState == Init_State)
  91. {
  92. m_eToolState = FirstHit;
  93. m_ptBeginPos = m_ptPrePos = ptPos;
  94. }
  95. else if(m_eToolState == FirstHit)
  96. {
  97. m_eToolState = SecondHit;
  98. pShape       = new CCircle;
  100. //保存图形样式
  101. pShape->crColor    = pDataBase->m_Shape.crColor;
  102. pShape->fnPenStyle = pDataBase->m_Shape.fnPenStyle;
  103. pShape->nWidth     = pDataBase->m_Shape.nWidth;
  105. pShape->m_ptFirstPos  = m_ptBeginPos;
  106. pShape->m_ptSecondPos = ptPos;
  107. pShape->nRadius       = CDraw::Distance(pShape->m_ptFirstPos,
  108.                     pShape->m_ptSecondPos);
  110. //第一点和第二点不重合才保存
  111. if (pShape->m_ptFirstPos.x != ptPos.x || 
  112. pShape->m_ptFirstPos.y != ptPos.y)
  113. {
  114. //保存至数组
  115. pArrayShape->Add(pShape);
  116. }
  117. else
  118. {
  119. delete pShape;
  120. pShape = NULL;
  121. }
  123. //取消画图状态
  124. OverCurTool(hWnd);
  125. }
  126. }