C++ 大作业 图新编辑器 实验报告

// VCadView.cpp : implementation of the CVCadView class // #include "stdafx.h" #include "VCad.h" #include "VCadDoc.h" #include "VCadView.h" #include "Base.h" #include "Command.h" #include "CreateCmd.h" #include "ModifyCmd.h" #include "Entity.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif ///////////////////////////////////////////////////////////////////////////// // CVCadView IMPLEMENT_DYNCREATE(CVCadView, CView) BEGIN_MESSAGE_MAP(CVCadView, CView) //{{AFX_MSG_MAP(CVCadView) ON_WM_LBUTTONDOWN() ON_WM_MOUSEMOVE() ON_WM_RBUTTONDOWN() ON_COMMAND(ID_PICK, OnPick) ON_UPDATE_COMMAND_UI(ID_PICK, OnUpdatePick) ON_COMMAND(ID_REDRAW, OnRedraw) //}}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) ON_COMMAND_RANGE(ID_CREATE_LINE, ID_CREATE_TRIANGLE, OnCreateEntity) ON_UPDATE_COMMAND_UI_RANGE(ID_CREATE_LINE, ID_CREATE_TRIANGLE, OnUpdateCreateCommand) ON_COMMAND_RANGE(ID_MODIFY_MOVE, ID_MODIFY_MIRROR, OnModifyEntity) ON_UPDATE_COMMAND_UI_RANGE(ID_MODIFY_MOVE, ID_MODIFY_MIRROR, OnUpdateModifyCommand) END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CVCadView construction/destruction CVCadView::CVCadView() { // TODO: add construction code here g_pView = this; m_pCmd = NULL; // 初始化世界坐标与屏幕坐标的关系 m_dOrgX = m_dOrgY = 0.; scale = 1.; } CVCadView::~CVCadView() { if( m_pCmd ) delete m_pCmd ; } BOOL CVCadView::PreCreateWindow(CREATESTRUCT& cs) { // TODO: Modify the Window class or styles here by modifying // the CREATESTRUCT cs return CView::PreCreateWindow(cs); } ///////////////////////////////////////////////////////////////////////////// // CVCadView drawing void CVCadView::OnDraw(CDC* pDC) { g_nRefresh ++; // 每次视窗被重新绘制时，刷新次数加 1 CVCadDoc* pDoc = GetDocument(); ASSERT_VALID(pDoc); // TODO: add draw code for native data here pDoc->Draw(pDC); } ///////////////////////////////////////////////////////////////////////////// // CVCadView diagnostics #ifdef _DEBUG void CVCadView::AssertValid() const { CView::AssertValid(); } void CVCadView::Dump(CDumpContext& dc) const { CView::Dump(dc); } CVCadDoc* CVCadView::GetDocument() // non-debug version is inline { ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CVCadDoc))); return (CVCadDoc*)m_pDocument; } #endif //_DEBUG ///////////////////////////////////////////////////////////////////////////// // CVCadView message handlers void CVCadView::OnCreateEntity(int m_nID) { // 如果当前状态存在命令，那么 // 1. 取消该命令的操作 // 2. 删除该命令对象 // 3. 将命令指针设为空 if( m_pCmd ){ m_pCmd->Cancel(); delete m_pCmd ; m_pCmd = NULL; } // 下面根据不同的菜单命令创建不同的命令对象 switch(m_nID) { case ID_CREATE_LINE: // 直线 { m_pCmd = new CCreateLine(); break; } case ID_CREATE_RECTANGLE: // 矩形 { m_pCmd = new CCreateRect(); break; } case ID_CREATE_CIRCLE: // 圆 { m_pCmd = new CCreateCircle(); break; } case ID_CREATE_ARC: // 圆弧 { m_pCmd = new CCreateArc(); break; } case ID_CREATE_TRIANGLE: //三角形 { m_pCmd = new CCreateTriangle(); break; } } } void CVCadView::OnUpdateCreateCommand(CCmdUI* pCmdUI) { int flag = 0 ; switch(pCmdUI->m_nID) { case ID_CREATE_LINE: { if( (m_pCmd != NULL && m_pCmd->GetType() == ctCreateLine) ) flag = 1; break; } case ID_CREATE_RECTANGLE: { if( (m_pCmd != NULL && m_pCmd->GetType() == ctCreateRectangle) ) flag = 1; break; } case ID_CREATE_CIRCLE: { if( (m_pCmd != NULL && m_pCmd->GetType() == ctCreateCircle) ) flag = 1; break; } case ID_CREATE_ARC: { if( (m_pCmd != NULL && m_pCmd->GetType() == ctCreateArc) ) flag = 1; break; } case ID_CREATE_TRIANGLE: { if( (m_pCmd != NULL && m_pCmd->GetType() == ctCreateTriangle) ) flag = 1; break; } default: break; } pCmdUI->SetCheck(flag); } void CVCadView::OnModifyEntity(int m_nID) { CVCadDoc* pDoc = GetDocument(); ASSERT(pDoc) ; // 如果当前状态存在命令，那么 // 1. 取消该命令的操作 // 2. 删除该命令对象 // 3. 将命令指针设为空 if( m_pCmd ){ m_pCmd->Cancel(); delete m_pCmd ; m_pCmd = NULL; } // 判断是否有实体图元被选中 if(pDoc->m_selectArray.GetSize() == 0) { CString strError = _T("请首先选取图元"); AfxMessageBox(strError); return; } // 下面根据不同的菜单命令创建不同的命令对象 switch(m_nID) { case ID_MODIFY_MOVE: // 平移 { m_pCmd = new CMove(); break; } case ID_MODIFY_ROTATE: // 旋转 { m_pCmd = new CRotate(); break; } case ID_MODIFY_MIRROR: // 镜像 { m_pCmd = new CMirror(); break; } default: break; } } void CVCadView::OnUpdateModifyCommand(CCmdUI* pCmdUI) { CVCadDoc* pDoc = GetDocument(); ASSERT(pDoc) ; // 判断是否有实体图元被选中 if(pDoc->m_selectArray.GetSize() == 0) { pCmdUI->Enable(FALSE); return; } int flag = 0 ; switch(pCmdUI->m_nID) { case ID_MODIFY_MOVE: { if( (m_pCmd != NULL && m_pCmd->GetType() == ctMove) ) flag = 1; break; } case ID_MODIFY_ROTATE: { if( (m_pCmd != NULL && m_pCmd->GetType() == ctRotate) ) flag = 1; break; } case ID_MODIFY_MIRROR: { if( (m_pCmd != NULL && m_pCmd->GetType() == ctMirror) ) flag = 1; break; } default: break; } pCmdUI->SetCheck(flag); } void CVCadView::WorldtoScreen(const Position& pos, CPoint& screenPt) { // 获取当前客户区的大小 CRect rect ; GetClientRect(&rect) ; // 将屏幕原点设置为客户区的中心 int nSOrgX = (rect.left + rect.right) / 2 ; int nSOrgY = -(rect.top + rect.bottom) / 2 ; // 计算屏幕坐标值 screenPt.x = (int)((pos.x - m_dOrgX) / scale + nSOrgX) ; screenPt.y = (int)((pos.y - m_dOrgY) / scale + nSOrgY) ; } void CVCadView::ScreentoWorld(const CPoint& pt, Position& pos) { CPoint screenPt = pt; CDC* pDC = GetDC(); pDC->SetMapMode(MM_LOENGLISH); pDC->DPtoLP(&screenPt); ReleaseDC(pDC); // 获取当前客户区的大小 CRect rect ; GetClientRect(&rect) ; // 将屏幕原点设置为客户区的中心 int nSOrgX = (rect.left + rect.right) / 2 ; int nSOrgY = -(rect.top + rect.bottom) / 2 ; // 计算世界坐标值 pos.x = (screenPt.x - nSOrgX) * scale + m_dOrgX; pos.y = (screenPt.y - nSOrgY ) * scale + m_dOrgY; } double CVCadView::GetScale() { return scale; } void CVCadView::OnLButtonDown(UINT nFlags, CPoint point) { // TODO: Add your message handler code here and/or call default CVCadDoc* pDoc = GetDocument(); ASSERT_VALID(pDoc); Position pos; ScreentoWorld(point, pos); // 将设备坐标转换为世界坐标 if(m_pCmd) m_pCmd->OnLButtonDown(nFlags, pos); else pDoc->OnLButtonDown(nFlags, pos); CView::OnLButtonDown(nFlags, point); } void CVCadView::OnMouseMove(UINT nFlags, CPoint point) { // TODO: Add your message handler code here and/or call default CVCadDoc* pDoc = GetDocument(); ASSERT_VALID(pDoc); Position pos; ScreentoWorld(point, pos);// 将设备坐标转换为世界坐标 //获得状态条的指针 CStatusBar* pStatus=(CStatusBar*) AfxGetApp()->m_pMainWnd->GetDescendantWindow(ID_VIEW_STATUS_BAR); if(pStatus) { char tbuf[40]; sprintf(tbuf,"(%8.3f,%8.3f)",pos.x, pos.y); //在状态条的第二个窗格中输出当前鼠标的位置 pStatus->SetPaneText(1,tbuf); } if(m_pCmd) m_pCmd->OnMouseMove(nFlags, pos); else pDoc->OnMouseMove(nFlags, pos); CView::OnMouseMove(nFlags, point); } void CVCadView::OnRButtonDown(UINT nFlags, CPoint point) { // TODO: Add your message handler code here and/or call default Position pos; ScreentoWorld(point, pos);//