imageview.cpp

一种实现图片无缝接合软件的源代码

// ImageView.cpp : implementation of the CImageView class
//

#include "stdafx.h"
#include "Image.h"

#include "ImageDoc.h"
#include "ImageView.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CImageView

IMPLEMENT_DYNCREATE(CImageView, CView)

BEGIN_MESSAGE_MAP(CImageView, CView)
	//{{AFX_MSG_MAP(CImageView)
	ON_WM_LBUTTONDOWN()
	ON_WM_MOUSEMOVE()
	ON_WM_LBUTTONUP()
	ON_WM_ERASEBKGND()
	ON_COMMAND(ID_OPENONEC, OnOpen1C)
	ON_COMMAND(ID_OPENTWOC, OnOpen2C)
	ON_COMMAND(ID_OPENTHREEC, OnOpen3C)
	ON_COMMAND(ID_OPENFOURC, OnOpen4C)
	ON_COMMAND(ID_UNIE, OnUnie)
	ON_COMMAND(ID_UNDO, OnUndo)
	ON_COMMAND(ID_SAVE, OnSave)
	ON_WM_KEYDOWN()
	ON_WM_LBUTTONDBLCLK()
	ON_COMMAND(ID_NEW, OnNew)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CImageView construction/destruction

CImageView::CImageView()
{
	m_sPath1="";
	m_nWidth1=0;
	m_nHeight1=0;
	m_nX1=0;
	m_nY1=0;
	m_bCanMove1=false;
	m_sPath2="";
	m_nWidth2=0;
	m_nHeight2=0;
	m_nX2=0;
	m_nY2=0;
	m_bCanMove2=false;
	m_sPath3="";
	m_nWidth3=0;
	m_nHeight3=0;
	m_nX3=0;
	m_nY3=0;
	m_bCanMove3=false;
	m_sPath4="";
	m_nWidth4=0;
	m_nHeight4=0;
	m_nX4=0;
	m_nY4=0;
	m_bCanMove4=false;
	m_dwRop=SRCINVERT;
	m_nID=0;
}

CImageView::~CImageView()
{
	if(m_sPath1!="")
		::DeleteDC(hMemDC1);
	if(m_sPath2!="")
		::DeleteDC(hMemDC2);
	if(m_sPath3!="")
		::DeleteDC(hMemDC3);
	if(m_sPath4!="")
		::DeleteDC(hMemDC4);
}

BOOL CImageView::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CImageView drawing

void CImageView::OnDraw(CDC* pDC)
{
	CImageDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	
	if(m_sPath1!="")
		::BitBlt(pDC->m_hDC,m_nX1,m_nY1,m_nWidth1,m_nHeight1,hMemDC1,0,0,m_dwRop);
	if(m_sPath2!="")
		::BitBlt(pDC->m_hDC,m_nX2,m_nY2,m_nWidth2,m_nHeight2,hMemDC2,0,0,m_dwRop);
	if(m_sPath3!="")
		::BitBlt(pDC->m_hDC,m_nX3,m_nY3,m_nWidth3,m_nHeight3,hMemDC3,0,0,m_dwRop);
	if(m_sPath4!="")
		::BitBlt(pDC->m_hDC,m_nX4,m_nY4,m_nWidth4,m_nHeight4,hMemDC4,0,0,m_dwRop);
}

/////////////////////////////////////////////////////////////////////////////
// CImageView diagnostics

#ifdef _DEBUG
void CImageView::AssertValid() const
{
	CView::AssertValid();
}

void CImageView::Dump(CDumpContext& dc) const
{
	CView::Dump(dc);
}

CImageDoc* CImageView::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CImageDoc)));
	return (CImageDoc*)m_pDocument;
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CImageView message handlers
BOOL CImageView::OnEraseBkgnd(CDC* pDC) 
{
	CRect rect;
	GetClientRect(&rect);
	pDC->PatBlt(0,0,rect.Width(),rect.Height(), BLACKNESS);
	return TRUE;
}

void CImageView::OnOpen1C() 
{
	CFileDialog dlg(TRUE,"bmp","*.bmp",OFN_HIDEREADONLY|OFN_OVERWRITEPROMPT,"BMP位图文件(*.bmp)|*.bmp||",NULL);
	if(dlg.DoModal()==IDOK)
	{
		m_sPath1=dlg.GetPathName();
		CFile file;
		file.Open(m_sPath1,CFile::modeReadWrite);
		unsigned char a[1],b[1];
		file.Seek(18,CFile::begin);
		file.Read(b,1);
		file.Read(a,1);
		m_nWidth1=a[0]*256+b[0];
		file.Seek(22,CFile::begin);
		file.Read(b,1);
		file.Read(a,1);
		m_nHeight1=a[0]*256+b[0];
		file.Close();
		HBITMAP hbitmap;
		hbitmap=(HBITMAP)LoadImage(AfxGetInstanceHandle(),m_sPath1,IMAGE_BITMAP,0,0,LR_LOADFROMFILE|LR_CREATEDIBSECTION);
		hMemDC1=::CreateCompatibleDC(NULL);
		SelectObject(hMemDC1,hbitmap);
		::DeleteObject(hbitmap);		
		Invalidate();
	}
}

void CImageView::OnOpen2C() 
{
	CFileDialog dlg(TRUE,"bmp","*.bmp",OFN_HIDEREADONLY|OFN_OVERWRITEPROMPT,"BMP位图文件(*.bmp)|*.bmp||",NULL);
	if(dlg.DoModal()==IDOK)
	{
		m_sPath2=dlg.GetPathName();
		CFile file;
		file.Open(m_sPath2,CFile::modeReadWrite);
		unsigned char a[1],b[1];
		file.Seek(18,CFile::begin);
		file.Read(b,1);
		file.Read(a,1);
		m_nWidth2=a[0]*256+b[0];
		file.Seek(22,CFile::begin);
		file.Read(b,1);
		file.Read(a,1);
		m_nHeight2=a[0]*256+b[0];
		file.Close();
		HBITMAP hbitmap;
		hbitmap=(HBITMAP)LoadImage(AfxGetInstanceHandle(),m_sPath2,IMAGE_BITMAP,0,0,LR_LOADFROMFILE|LR_CREATEDIBSECTION);
		hMemDC2=::CreateCompatibleDC(NULL);
		SelectObject(hMemDC2,hbitmap);
		::DeleteObject(hbitmap);		
		Invalidate();
	}
}	

void CImageView::OnOpen3C() 
{
	CFileDialog dlg(TRUE,"bmp","*.bmp",OFN_HIDEREADONLY|OFN_OVERWRITEPROMPT,"BMP位图文件(*.bmp)|*.bmp||",NULL);
	if(dlg.DoModal()==IDOK)
	{
		m_sPath3=dlg.GetPathName();
		CFile file;
		file.Open(m_sPath3,CFile::modeReadWrite);
		unsigned char a[1],b[1];
		file.Seek(18,CFile::begin);
		file.Read(b,1);
		file.Read(a,1);
		m_nWidth3=a[0]*256+b[0];
		file.Seek(22,CFile::begin);
		file.Read(b,1);
		file.Read(a,1);
		m_nHeight3=a[0]*256+b[0];
		file.Close();
		HBITMAP hbitmap;
		hbitmap=(HBITMAP)LoadImage(AfxGetInstanceHandle(),m_sPath3,IMAGE_BITMAP,0,0,LR_LOADFROMFILE|LR_CREATEDIBSECTION);
		hMemDC3=::CreateCompatibleDC(NULL);
		SelectObject(hMemDC3,hbitmap);
		::DeleteObject(hbitmap);		
		Invalidate();
	}
}

void CImageView::OnOpen4C() 
{
	CFileDialog dlg(TRUE,"bmp","*.bmp",OFN_HIDEREADONLY|OFN_OVERWRITEPROMPT,"BMP位图文件(*.bmp)|*.bmp||",NULL);
	if(dlg.DoModal()==IDOK)
	{
		m_sPath4=dlg.GetPathName();
		CFile file;
		file.Open(m_sPath4,CFile::modeReadWrite);
		unsigned char a[1],b[1];
		file.Seek(18,CFile::begin);
		file.Read(b,1);
		file.Read(a,1);
		m_nWidth4=a[0]*256+b[0];
		file.Seek(22,CFile::begin);
		file.Read(b,1);
		file.Read(a,1);
		m_nHeight4=a[0]*256+b[0];
		file.Close();
		HBITMAP hbitmap;
		hbitmap=(HBITMAP)LoadImage(AfxGetInstanceHandle(),m_sPath4,IMAGE_BITMAP,0,0,LR_LOADFROMFILE|LR_CREATEDIBSECTION);
		hMemDC4=::CreateCompatibleDC(NULL);
		SelectObject(hMemDC4,hbitmap);
		::DeleteObject(hbitmap);		
		Invalidate();
	}
}

void CImageView::OnLButtonDblClk(UINT nFlags, CPoint point) 
{
	if(point.x<m_nX1+m_nWidth1 && point.y<m_nY1+m_nHeight1 && point.x>m_nX1 && point.y>m_nY1)	
		m_nID=1;
	if(point.x<m_nX2+m_nWidth2 && point.y<m_nY2+m_nHeight2 && point.x>m_nX2 && point.y>m_nY2)	
		m_nID=2;
	if(point.x<m_nX3+m_nWidth3 && point.y<m_nY3+m_nHeight3 && point.x>m_nX3 && point.y>m_nY3)	
		m_nID=3;
	if(point.x<m_nX4+m_nWidth4 && point.y<m_nY4+m_nHeight4 && point.x>m_nX4 && point.y>m_nY4)	
		m_nID=4;
	CView::OnLButtonDblClk(nFlags, point);
}

void CImageView::OnLButtonDown(UINT nFlags, CPoint point) 
{
	if(point.x<m_nX4+m_nWidth4 && point.y<m_nY4+m_nHeight4 && point.x>m_nX4 && point.y>m_nY4 && m_bCanMove1==false && m_bCanMove2==false && m_bCanMove3==false)	
		m_bCanMove4=true;
	if(point.x<m_nX3+m_nWidth3 && point.y<m_nY3+m_nHeight3 && point.x>m_nX3 && point.y>m_nY3 && m_bCanMove1==false && m_bCanMove2==false && m_bCanMove4==false)	
		m_bCanMove3=true;
	if(point.x<m_nX2+m_nWidth2 && point.y<m_nY2+m_nHeight2 && point.x>m_nX2 && point.y>m_nY2 && m_bCanMove1==false && m_bCanMove3==false && m_bCanMove4==false)	
		m_bCanMove2=true;
	if(point.x<m_nX1+m_nWidth1 && point.y<m_nY1+m_nHeight1 && point.x>m_nX1 && point.y>m_nY1 && m_bCanMove2==false && m_bCanMove3==false && m_bCanMove4==false)	
		m_bCanMove1=true;
	CView::OnLButtonDown(nFlags, point);
}

void CImageView::OnMouseMove(UINT nFlags, CPoint point) 
{
	if(m_bCanMove1==true)
	{
		int dx=m_nOldX1-m_nX1;
		int dy=m_nOldY1-m_nY1;
		m_nX1=point.x-dx;
		m_nY1=point.y-dy;
		Invalidate();
	}
	if(m_bCanMove2==true)
	{
		int dx=m_nOldX2-m_nX2;
		int dy=m_nOldY2-m_nY2;
		m_nX2=point.x-dx;
		m_nY2=point.y-dy;
		Invalidate();
	}
	if(m_bCanMove3==true)
	{
		int dx=m_nOldX3-m_nX3;
		int dy=m_nOldY3-m_nY3;
		m_nX3=point.x-dx;
		m_nY3=point.y-dy;
		Invalidate();
	}
	if(m_bCanMove4==true)
	{
		int dx=m_nOldX4-m_nX4;
		int dy=m_nOldY4-m_nY4;
		m_nX4=point.x-dx;
		m_nY4=point.y-dy;
		Invalidate();
	}
	m_nOldX1=m_nOldX2=m_nOldX3=m_nOldX4=point.x;
	m_nOldY1=m_nOldY2=m_nOldY3=m_nOldY4=point.y;
	
	CView::OnMouseMove(nFlags, point);
}

void CImageView::OnLButtonUp(UINT nFlags, CPoint point) 
{
	m_bCanMove1=false;
	m_bCanMove2=false;
	m_bCanMove3=false;
	m_bCanMove4=false;
	CView::OnLButtonUp(nFlags, point);
}

void CImageView::OnUnie() 
{
	m_dwRop=SRCPAINT;
	Invalidate();
}

void CImageView::OnUndo() 
{
	m_dwRop=SRCINVERT;
	Invalidate();
}