DRAGPAGE.CPP
资源名称:SNMP范例源代码.zip [点击查看]
上传用户:shgx688
上传日期:2009-12-27
资源大小:855k
文件大小:3k
源码类别:
SNMP编程
开发平台:
MultiPlatform
- ************************************
- REVISION LOG ENTRY
- Revision By: Mihai Filimon
- Revised on 7/22/98 9:22:22 AM
- Comments: DragPage.cpp implementation for CDragPage
- ************************************/
- #include "stdafx.h"
- #include "DragPage.h"
- #include "SheetsWnd.h"
- #include <math.h>
- // Function name : CDragPage::CDragPage
- // Description : Default constructor for this object
- // Return type :
- CDragPage::CDragPage()
- {
- Reset();
- m_pRectSave = new SRectSave();
- }
- // Function name : CDragPage::CDragPage
- // Description : Copy constructor
- // Return type :
- // Argument : CDragPage& dragSource
- CDragPage::CDragPage(CDragPage& dragSource)
- {
- m_bDragging = dragSource.m_bDragging;
- m_pViewStartDrag = dragSource.m_pViewStartDrag;
- m_pViewTrackDrag = dragSource.m_pViewTrackDrag;
- m_pRectSave = NULL;
- }
- // Function name : CDragPage::~CDragPage
- // Description : virtual Destructor of this object
- // Return type :
- CDragPage::~CDragPage()
- {
- if (m_pRectSave)
- delete m_pRectSave;
- m_pRectSave = NULL;
- }
- // Function name : CDragPage::Set
- // Description : Set the m_bDragging, m_pViewStartDrag to new values, and reset m_pViewTrackDrag
- // Return type : void
- // Argument : BOOL bDragging
- // Argument : CWnd* pViewStartDrag
- void CDragPage::Set(BOOL bDragging , CWnd* pViewStartDrag )
- {
- m_bDragging = bDragging;
- m_pViewStartDrag = pViewStartDrag;
- SetTrackDrag(m_pViewStartDrag);
- }
- // Function name : CDragPage::SetTrackDrag
- // Description : Set the m_pViewTrackDrag mamber to new value pWnd
- // Return type : void
- // Argument : CWnd * pWnd
- void CDragPage::SetTrackDrag(CWnd * pWnd)
- {
- m_pViewTrackDrag = pWnd;
- }
- // Function name : CDragPage::Reset
- // Description : Reset all member variables
- // Return type : void
- void CDragPage::Reset()
- {
- Set(FALSE,NULL);
- }
- // Function name : CDragPage::IsDragging
- // Description : True if dragging
- // Return type : BOOL
- BOOL CDragPage::IsDragging()
- {
- return m_bDragging;
- }
- // Function name : CDragPage::Draw
- // Description : Draw drag object
- // Return type : void
- // Argument : CSheetAlpha* pSheet
- void CDragPage::Draw(CSheetsWnd* pSheet)
- {
- static const int arDX = 0, arDY = -5, a = 7;
- if (!m_pViewTrackDrag)
- m_pRectSave->Restore();
- else
- {
- CRect rt = pSheet->GetPageRect(m_pViewTrackDrag);
- CRect rDraw = pSheet->GetDrawRect();
- rt.left = min(max(rt.left, rDraw.left),rt.right);
- pSheet->ClientToScreen(rt);
- rt.top = rt.top + arDY; rt.left = rt.left + arDX;
- int ar3p3p2 = (int)((double)a * sqrt(3)/6);
- CPoint points[3];
- points[0] = rt.TopLeft() + CPoint(-a / 2,-ar3p3p2);
- points[1] = rt.TopLeft() + CPoint(+a / 2,-ar3p3p2);
- points[2] = rt.TopLeft() + CPoint( 0 ,ar3p3p2 * 2);
- if (m_pRectSave->IsChanged(points[0]))
- {
- CRgn rgn;
- if (rgn.CreatePolygonRgn(points, 3, WINDING))
- {
- m_pRectSave->Restore();
- m_pRectSave->Save(CRect(points[0], CSize(a,a)));
- CDC* pDC = CDC::FromHandle(::GetDC(NULL));
- // Draw the putirin
- pDC->FillRgn(&rgn, &CBrush(RGB(0,0,0)));
- // End draw putirin
- ::ReleaseDC(NULL, pDC->m_hDC);
- }
- }
- }
- }