MiniDraw.rar_MFC 双缓冲_MFC双缓冲绘图_mfc 绘图 双_minidraw_双缓冲

#include "StdAfx.h" #include "DrawDoc.h" #include "CommUtils.h" IMPLEMENT_DYNCREATE(CDrawDoc, CDocument) CDrawDoc::CDrawDoc(): m_ShapeList(), m_Color(RGB(0xFF, 0xFF, 0xFF)), m_ActiveShape(NULL) { m_Size.cx = 600; m_Size.cy = 400; } CDrawDoc::~CDrawDoc() { ClearShape(); } void CDrawDoc::Serialize( CArchive& ar ) { CObject::Serialize(ar); if (ar.IsStoring()) { // 标识与版本 ar<<MND_FLAG; ar<<MND_VER; // 属性 ar<<m_Size.cx; ar<<m_Size.cy; ar<<m_Color; // 序列化图形列表 m_ShapeList.Serialize(ar); } else { WORD wFlag; ar>>wFlag; if (wFlag != MND_FLAG) { MessageBox(AfxGetMainWnd()->GetSafeHwnd(), "打开的文件格式不对", "错误", MB_OK|MB_ICONERROR); return; } BYTE bVer; ar>>bVer; ar>>m_Size.cx; ar>>m_Size.cy; ar>>m_Color; m_ShapeList.Serialize(ar); // 挂接文档类 CShape* pShape; for (int i = 0; i < m_ShapeList.GetSize(); i++) { pShape = (CShape*)m_ShapeList[i]; pShape->InitData(this); } } } void CDrawDoc::SetSize( const SIZE& sz ) { if ((sz.cx != m_Size.cx) || (sz.cy != m_Size.cy)) { m_Size = sz; UpdateAllViews(NULL); SetModifiedFlag(TRUE); } } const SIZE& CDrawDoc::GetSize() { return m_Size; } void CDrawDoc::SetColor( const COLORREF nColor ) { if (nColor != m_Color) { m_Color = nColor; UpdateAllViews(NULL); SetModifiedFlag(TRUE); } } COLORREF CDrawDoc::GetColor() { return m_Color; } int CDrawDoc::GetShapeCount() { return m_ShapeList.GetSize(); } BOOL CDrawDoc::AddShape( CShape* pShape ) { if (IndexOf(pShape) < 0) { m_ShapeList.Add(pShape); RECT rcShape; pShape->InitData(this); pShape->GetShapeRect(rcShape); UpdateAllViews(NULL, (long)&rcShape, 0); SetModifiedFlag(TRUE); return TRUE; } else return FALSE; } BOOL CDrawDoc::RemoveShape( CShape* pShape ) { int Idx = IndexOf(pShape); if ( Idx >= 0 ) { m_ShapeList.RemoveAt(Idx); // 重新选定活动图形 if (m_ActiveShape == pShape) { if (m_ShapeList.GetSize() == 0) SetActiveShape(NULL); else if (Idx < m_ShapeList.GetSize()) SetActiveShape(GetShape(Idx)); else SetActiveShape(GetShape(--Idx)); } RECT rcShape; pShape->GetShapeRect(rcShape); delete pShape; UpdateAllViews(NULL, (long)&rcShape, 0); SetModifiedFlag(TRUE); return TRUE; } else return FALSE; } CShape* CDrawDoc::GetShape( int idx ) { if ((idx < 0) || (idx >= m_ShapeList.GetSize())) return NULL; else return (CShape*)m_ShapeList[idx]; } int CDrawDoc::IndexOf( CShape* pShape ) { for(int i = 0; i < m_ShapeList.GetSize(); i++) if (pShape == m_ShapeList[i]) return i; return -1; } BOOL CDrawDoc::MoveShape( CShape* pShape, int nNewPos ) { int idx = IndexOf(pShape); if ((idx < 0) || (idx == nNewPos) || (nNewPos < 0) || (nNewPos >= m_ShapeList.GetSize())) return FALSE; else { m_ShapeList.RemoveAt(idx); m_ShapeList.InsertAt(nNewPos, pShape); RECT rcShape; pShape->GetShapeRect(rcShape); UpdateAllViews(NULL, (long)&rcShape, 0); SetModifiedFlag(TRUE); return TRUE; } } void CDrawDoc::SetActiveShape( CShape* pShape ) { if (m_ActiveShape != pShape) { RECT rcOld, rcUpdate; if (m_ActiveShape != NULL) m_ActiveShape->GetShapeRect(rcOld); else memset(&rcOld, 0, sizeof(rcOld)); m_ActiveShape = pShape; if (m_ActiveShape != NULL) m_ActiveShape->GetShapeRect(rcUpdate); else memset(&rcUpdate, 0, sizeof(rcUpdate)); UnionRect(&rcUpdate, &rcUpdate, &rcOld); if (!IsRectEmpty(&rcUpdate)) { UpdateAllViews(NULL, (long)&rcUpdate, 0); SetModifiedFlag(TRUE); } } } CShape* CDrawDoc::GetActiveShape() { return m_ActiveShape; } void CDrawDoc::ClearShape() { for (int i = 0; i < m_ShapeList.GetSize(); i++) { delete m_ShapeList[i]; } m_ShapeList.RemoveAll(); } CShape* CDrawDoc::GetShapeFromPoint( POINT& pt ) { // 优先考虑在活动图形的拖动点上的情况 if ((m_ActiveShape != NULL) && (m_ActiveShape->HitTest(pt) == HT_DRAGPOINT)) return m_ActiveShape; CShape* pShape; for (int i = m_ShapeList.GetSize() - 1; i >= 0 ; i--) { pShape = GetShape(i); int nTest = pShape->HitTest(pt); if ((nTest == HT_INSHAPE) || (nTest == HT_DRAGPOINT)) return pShape; } return NULL; } //------------------------------------------------------------------------ //Shape IMPLEMENT_DYNAMIC(CShape, CObject) void CShape::InitData( CDrawDoc* pDrawDoc ) { m_OwnerDoc = pDrawDoc; } CShape::CShape(): m_LineWidth(1), m_LineColor(0), m_FillColor(RGB(0xFF, 0xFF, 0xFF)), m_Draging(FALSE), m_OwnerDoc(NULL) { } void CShape::SetLineWidth( const int nWidth ) { if (m_LineWidth != nWidth) { RECT rcBefore; GetShapeRect(rcBefore); m_LineWidth = nWidth; RECT rcAfter; GetShapeRect(rcAfter); UnionRect(&rcAfter, &rcAfter, &rcBefore); UpdateView(rcAfter); } } int CShape::GetLineWidth() { return m_LineWidth; } void CShape::SetLineColor( const COLORREF nColor ) { if (m_LineColor != nColor) { m_LineColor = nColor; RECT rcUpdate; GetShapeRect(rcUpdate); UpdateView(rcUpdate); } } COLORREF CShape::GetLineColor() { return m_LineColor; } void CShape::SetFillColor( const COLORREF nColor ) { if (m_FillColor != nColor) { m_FillColor = nColor; RECT rcUpdate; GetShapeRect(rcUpdate); UpdateView(rcUpdate); } } COLORREF CShape::GetFillColor() { return m_FillColor;; } void CShape::BeginDrag( POINT& pt ) { m_Draging = TRUE; DoBeginDrag(pt); } void CShape::EndDrag( POINT& pt ) { m_Draging = FALSE; DoEndDrag(pt); } void CShape::Draging( POINT& pt ) { DoDraging(pt); } struct MY_DATA_TYPE { int msgtype; RECT rect; }; void CShape::UpdateView(RECT& rcUpdate) { MY_DATA_TYPE data; data.msgtype = 1; data.rect = rcUpdate; LPARAM* lparam = (LPARAM*)&data; if (m_OwnerDoc != NULL) { m_OwnerDoc->UpdateAllViews(NULL, (long)&rcUpdate, 0); m_OwnerDoc->SetModifiedFlag(TRUE); } } void CShape::Serialize( CArchive& ar ) { CObject::Serialize(ar); if (ar.IsStoring()) { ar<<m_LineWidth; ar<<m_LineWidth; ar<<m_FillColor; } else { ar>>m_LineWidth; ar>>m_LineColor; ar>>m_FillColor; } } void CShape::GetDragPoint( RECT& rcDP, POINT& pt ) { rcDP.left = pt.x - DPRADII; rcDP.top = pt.y - DPRADII; rcDP.right = pt.x + DPRADII; rcDP.bottom = pt.y + DPRADII; } void CShape::DrawDragPoint( CDC* pDC, RECT& rcDP ) { CBrush Brsh; Brsh.CreateStockObject(BLACK_BRUSH); pDC->FillRect(&rcDP, &Brsh); } BOOL CShape::IsDraging() { return m_Draging; } //------------------------------------------------------------------------ //MiniRect IMPLEMENT_SERIAL(CShapeRect, CShape, 1) void CShapeRect::SetRect( const RECT& rcBound ) { if (!EqualRect(&rcBound, &m_rcBound)) { RECT rcOld; GetShapeRect(rcOld); m_rcBound = rcBound; RECT rcUpdate; GetShapeRect(rcUpdate); UnionRect(&rcUpdate, &rcUpdate, &rcOld); UpdateView(rcUpdate); } } const RECT& CShapeRect::GetRect() { return m_rcBound; } int CShapeRect::HitTest( POINT& pt ) { if ((m_OwnerDoc != NULL) && (m_OwnerDoc->GetActiveShape() == this) && PtInDragPoint(pt)) return HT_DRAGPOINT; if (PtInRect(&m_rcBound, pt)) return HT_INSHAPE; else return HT_OUTSHAPE; } void CShapeRect::DrawShape( CDC* pDC ) { CBrush brsh(m_FillColor); pDC->SelectObject(brsh); CPen pen(PS_SOLID, m_LineWidth, m_LineColor); pDC->SelectObject(pen); pDC->Rectangle(&m_rcBound); } void CShapeRect::DrawDragPoints( CDC* pDC ) { RECT rcDP; POINT ptAngle; //left top ptAngle.x = m_rcBound.left; ptAngle.y = m_rcBound.top; GetDragPoint(rcDP, ptAngle); DrawDragPoint(pDC, rcDP); //left bottom ptAngle.x = m_rcBound.left; ptAngle.y = m_rcBound.bottom;