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ImageView.cpp
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// ImageView.cpp : implementation file
//
#include "stdafx.h"
#include "ImageView.h"
#include "ImageDoc.h"
//{{
#include "MainFrm.h"
//}}
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CImageView
IMPLEMENT_DYNCREATE(CImageView, CFormView)
BEGIN_MESSAGE_MAP(CImageView, CFormView)
//{{AFX_MSG_MAP(CImageView)
ON_COMMAND(ID_EDIT_CLEAR, OnEditClear)
ON_UPDATE_COMMAND_UI(ID_EDIT_CLEAR, OnUpdateEditClear)
ON_COMMAND(ID_EDIT_COPY, OnEditCopy)
ON_UPDATE_COMMAND_UI(ID_EDIT_COPY, OnUpdateEditCopy)
ON_COMMAND(ID_EDIT_CUT, OnEditCut)
ON_UPDATE_COMMAND_UI(ID_EDIT_CUT, OnUpdateEditCut)
ON_COMMAND(ID_EDIT_PASTE, OnEditPaste)
ON_UPDATE_COMMAND_UI(ID_EDIT_PASTE, OnUpdateEditPaste)
ON_COMMAND(ID_EDIT_REDO, OnEditRedo)
ON_UPDATE_COMMAND_UI(ID_EDIT_REDO, OnUpdateEditRedo)
ON_COMMAND(ID_EDIT_SELECT_ALL, OnEditSelectAll)
ON_COMMAND(ID_EDIT_UNDO, OnEditUndo)
ON_UPDATE_COMMAND_UI(ID_EDIT_UNDO, OnUpdateEditUndo)
ON_WM_LBUTTONDOWN()
ON_WM_LBUTTONUP()
ON_WM_MOUSEMOVE()
ON_WM_LBUTTONDBLCLK()
ON_COMMAND(ID_FILE_PRINT, OnFilePrint)
ON_COMMAND(ID_FILE_PRINT_PREVIEW, OnFilePrintPreview)
ON_WM_ERASEBKGND()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
CImageView::CImageView()
: CFormView(CImageView::IDD)
{
//{{AFX_DATA_INIT(CImageView)
// NOTE: the ClassWizard will add member initialization here
//}}AFX_DATA_INIT
InitData();
}
CImageView::CImageView( LPCTSTR lpszTemplateName )
:CFormView(lpszTemplateName)
{
InitData();
}
CImageView::CImageView( UINT nIDTemplate )
:CFormView(nIDTemplate)
{
InitData();
}
//初始化成员数据
void CImageView::InitData()
{
m_nUndoStackDeep = 5;//Undo/Redo堆栈深度
m_nAutoCommand=NULL;
m_bAutoProcessing=FALSE;
m_nRegionCombineMode=RGN_COPY;
m_nRegionFillMode=WINDING;
m_nZoomFactor=100; //100%
m_nMouseFunction=MOUSE_REGION;
m_nRegionTool=RGNMARK_FREEHAND;
m_stkUnRedo.SetStackDeep(m_nUndoStackDeep);
}
CImageView::~CImageView()
{
m_Region.Clear();
m_Region.DeleteObject();
}
void CImageView::DoDataExchange(CDataExchange* pDX)
{
CFormView::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CImageView)
// NOTE: the ClassWizard will add DDX and DDV calls here
//}}AFX_DATA_MAP
}
/////////////////////////////////////////////////////////////////////////////
// CImageView diagnostics
#ifdef _DEBUG
void CImageView::AssertValid() const
{
CFormView::AssertValid();
}
void CImageView::Dump(CDumpContext& dc) const
{
CFormView::Dump(dc);
}
CImageDoc* CImageView::GetDocument() // non-debug version is inline
{
// 为利于子类重载，去除该断言
// ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CImageDoc)));
return (CImageDoc*)m_pDocument;
}
#endif //_DEBUG
/////////////////////////////////////////////////////////////////////////////
// CImageView message handlers
//文档坐标与客户区坐标变换
void CImageView::ClientToDoc(CPoint& point)
{
// CClientDC dc(this);
// OnPrepareDC(&dc, NULL);
// dc.DPtoLP(&point);
point.x+=GetScrollPos(SB_HORZ),
point.y+=GetScrollPos(SB_VERT);
}
void CImageView::ClientToDoc(CRect& rect)
{
// CClientDC dc(this);
// OnPrepareDC(&dc, NULL);
// dc.DPtoLP(rect);
rect.left+=GetScrollPos(SB_HORZ),
rect.right+=GetScrollPos(SB_HORZ),
rect.top+=GetScrollPos(SB_VERT);
rect.bottom+=GetScrollPos(SB_VERT);
ASSERT(rect.left <= rect.right);
ASSERT(rect.bottom <= rect.top);
}
//该函数不完善
void CImageView::ClientToDoc(CRgn& rgn)
{
rgn.OffsetRgn(GetScrollPos(SB_HORZ),
GetScrollPos(SB_VERT));
}
void CImageView::DocToClient(CPoint& point)
{
// CClientDC dc(this);
// OnPrepareDC(&dc, NULL);
// dc.LPtoDP(&point);
point.x-=GetScrollPos(SB_HORZ),
point.y-=GetScrollPos(SB_VERT);
}
void CImageView::DocToClient(CRect& rect)
{
// CClientDC dc(this);
// OnPrepareDC(&dc, NULL);
// dc.LPtoDP(rect);
rect.left-=GetScrollPos(SB_HORZ),
rect.right-=GetScrollPos(SB_HORZ),
rect.top-=GetScrollPos(SB_VERT);
rect.bottom-=GetScrollPos(SB_VERT);
rect.NormalizeRect();
}
//该函数不完善
void CImageView::DocToClient(CRgn& rgn)
{
rgn.OffsetRgn(-GetScrollPos(SB_HORZ),
-GetScrollPos(SB_VERT));
}
/////////////////////////////////////////////////////////////////////////////
// CImageView 绘制
void CImageView::OnInitialUpdate()
{
CFormView::OnInitialUpdate();
ASSERT(GetDocument() != NULL);
// TODO: calculate the total size of this view
CSize size=GetDocument()->GetDocSize();
SetScrollSizes(MM_TEXT, size);
//设置初始区域为全图象
CRgn rgnImage;
rgnImage.CreateRectRgn(0,0,size.cx,size.cy);
m_Region.DeleteObject();
m_Region.Attach(rgnImage.Detach());
}
void CImageView::OnDraw(CDC* pDC)
{
// TODO: Add your specialized code here and/or call the base class
ASSERT_VALID(pDC);
CImageDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
HDIB hDIB = pDoc->GetHDIB();
//1998.12.26设置背景色
CBrush brush(HS_DIAGCROSS,RGB(192,192,192) );
if(!pDC->IsPrinting())
{
pDC->SetBkColor(RGB(255,255,255));
CRect rectWnd;
GetClientRect(&rectWnd);
rectWnd.right*=5;rectWnd.bottom*=5;//暂时用此下策
pDC->FillRect(&rectWnd,&brush);
}
if (hDIB != NULL)
{
//由句柄取得位图指针
LPSTR lpDIB = (LPSTR) ::GlobalLock((HGLOBAL) hDIB);
//由句柄取得位图宽高
int cxDIB = (int) ::DIBWidth(lpDIB); // Size of DIB - x
int cyDIB = (int) ::DIBHeight(lpDIB); // Size of DIB - y
::GlobalUnlock((HGLOBAL) hDIB);
//确定显示区域大小
CRect rcDIB;
rcDIB.top = rcDIB.left = 0;
rcDIB.right = cxDIB;
rcDIB.bottom = cyDIB;
CRect rcDest;
if (pDC->IsPrinting()) // printer DC
{
// 取得打印机纸张大小(in pixels)
int cxPage = pDC->GetDeviceCaps(HORZRES);
int cyPage = pDC->GetDeviceCaps(VERTRES);
// 取得打印机 pixels per inch
int cxInch = pDC->GetDeviceCaps(LOGPIXELSX);
int cyInch = pDC->GetDeviceCaps(LOGPIXELSY);
//
// Best Fit case -- create a rectangle which preserves
// the DIB's aspect ratio, and fills the page horizontally.
//
// The formula in the "->bottom" field below calculates the Y
// position of the printed bitmap, based on the size of the
// bitmap, the width of the page, and the relative size of
// a printed pixel (cyInch / cxInch).
//
rcDest.top = rcDest.left = 0;
rcDest.bottom = (int)(((double)cyDIB * cxPage * cyInch)
/ ((double)cxDIB * cxInch));
rcDest.right = cxPage;
}
else // not printer DC
{
rcDest = rcDIB;
//{{ 图象缩放显示
rcDest.bottom=int(rcDest.bottom * m_nZoomFactor/100);
rcDest.right =int(rcDest.right * m_nZoomFactor/100);
//}}
}
//显示
pDC->FillRect(&rcDest,&brush);
::PaintDIB(pDC->m_hDC, &rcDest, pDoc->GetHDIB(),
&rcDIB, pDoc->GetDocPalette());
//绘制选中区域的边框
if(!pDC->IsPrinting())
{
CBrush brush(RGB(0,128,128));
pDC->SetROP2(R2_NOT);
pDC->FrameRgn(&m_Region,&brush,1,1);
pDC->SetROP2(R2_COPYPEN);
}
}
}
//通用处理开始函数
//操作 :设置m_entryImage,设置等待光标,准备Undo
//返回值 TRUE 成功
// FALSE 失败
BOOL CImageView::BeginProcessing()
{
CImageDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
m_entryImage.hDIB=NULL; //源位图句柄
m_entryImage.hNewDIB=NULL; //生成目标位图句柄
m_entryImage.pImage=NULL; //源位图数据开始位（用于灰度图）
m_entryImage.pNewImage=NULL; //目标位图数据开始位（用于灰度图）
m_entryImage.hBitmap=NULL; //源临时中间设备相关位图句柄
m_entryImage.hNewBitmap=NULL; //目标临时中间设备相关位图句柄
m_entryImage.hMemDC=NULL; //源位图设备
m_entryImage.hNewDC=NULL; //目标位图设备
m_entryImage.rectImage=CRect(0,0,1,1); //包围选中区域的最小矩形
m_entryImage.sizeImage=CSize(1,1); //图象大小
if(pDoc->GetHDIB()==NULL) return FALSE;
//求出包围区域的最小矩形
if(m_Region.m_hObject == NULL ) return FALSE;
m_Region.GetRgnBox(&(m_entryImage.rectImage));
if(m_entryImage.rectImage.right-2<=m_entryImage.rectImage.left ||
m_entryImage.rectImage.bottom-2<=m_entryImage.rectImage.top)
{
AfxMessageBox(_T("选定的处理区域无效"));
return FALSE;
}
BeginWaitCursor();
// ReplaceHandleForUndo((HGLOBAL)pDoc->GetHDIB());
m_stkUnRedo.PushUndo(CopyHandle((HGLOBAL)pDoc->GetHDIB()));
m_entryImage.sizeImage.cx=pDoc->GetDocSize().cx;
m_entryImage.sizeImage.cy=pDoc->GetDocSize().cy;
return TRUE;
}
///////////////////////////////////////////////////
//灰度处理开始函数
//返回值 TRUE 成功
// FALSE 失败
// pNewImage是pImage的副本
///////////////////////////////////////////////////
BOOL CImageView::BeginProcessingGray()
{
CImageDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
BeginProcessing();
LPBITMAPINFOHEADER lpBi,lpNewBi;
m_entryImage.hDIB=pDoc->GetHDIB();
lpBi=(LPBITMAPINFOHEADER)::GlobalLock((HGLOBAL) m_entryImage.hDIB);//取得原有位图
m_entryImage.pImage=(BYTE FAR*)::FindDIBBits((LPSTR)lpBi);
m_entryImage.hNewDIB=(HDIB)::CopyHandle((HGLOBAL)m_entryImage.hDIB);//建立一个新位图
lpNewBi=(LPBITMAPINFOHEADER)::GlobalLock((HGLOBAL)m_entryImage.hNewDIB);
m_entryImage.pNewImage=(BYTE FAR*)::FindDIBBits((LPSTR)lpNewBi);
return TRUE;
}
///////////////////////////////////////////////////
//彩色处理开始函数
//返回值 TRUE 成功
// FALSE 失败
// hNewBitmap是hBitmap的副本
// hNewDC关联hNewBitmap, hMemDC关联hBitmap
BOOL CImageView::BeginProcessingColor()
{
CImageDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
BeginProcessing();
HDC hDC=::GetDC(NULL);
m_entryImage.hMemDC=::CreateCompatibleDC(hDC);
m_entryImage.hNewDC=::CreateCompatibleDC(hDC);
m_entryImage.hBitmap=::DIBToBitmap(pDoc->GetHDIB(),
//HPALETTE(pDoc->GetDocPalette()->m_hObject));
NULL);
m_entryImage.hNewBitmap=::DIBToBitmap(pDoc->GetHDIB(),
//HPALETTE(pDoc->GetDocPalette()->m_hObject));
NULL);
/* //{{test
m_entryImage.hBitmap=(HBITMAP)::CopyHandle(pDoc->GetHDIB());
m_entryImage.hNewBitmap=(HBITMAP)::CopyHandle(pDoc->GetHDIB());//建立一个新位图
//}}
*/
if(!m_entryImage.hBitmap || !m_entryImage.hNewBitmap) return FALSE;
if(!::SelectObject(m_entryImage.hMemDC,m_entryImage.hBitmap)) return FALSE;
if(!::SelectObject(m_entryImage.hNewDC,m_entryImage.hNewBitmap)) return FALSE;
::SelectClipRgn(m_entryImage.hNewDC,m_Region);
::DeleteDC(hDC);
return TRUE;
}
BOOL CImageView::EndProcessing(BOOL bSuccess)
{
EndWaitCursor();
if(bSuccess)
{
UpdateDocument(m_entryImage.hNewDIB);
return TRUE;
}
return FALSE;
}
BOOL CImageView::EndProcessingGray(BOOL bSuccess )
{
::GlobalUnlock((HGLOBAL)m_entryImage.hDIB);
::GlobalUnlock((HGLOBAL)m_entryImage.hNewDIB);
return EndProcessing(bSuccess );
}
BOOL CImageView::EndProcessingColor(BOOL bSuccess )
{
CImageDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
m_entryImage.hNewDIB=::BitmapToDIB(m_entryImage.hNewBitmap,
//HPALETTE(pDoc->GetDocPalette()->m_hObject));// 使用文档的调色板
NULL);
// m_entryImage.hNewDIB=(HDIB)::CopyHandle(m_entryImage.hNewBitmap);
BOOL bFlag=FALSE;
if(m_entryImage.hNewDIB!=NULL)
{
bFlag=EndProcessing(bSuccess);
}
else
{
EndWaitCursor();
}
::DeleteDC(m_entryImage.hMemDC);
::DeleteDC(m_entryImage.hNewDC);
::DeleteObject(m_entryImage.hBitmap);
::DeleteObject(m_entryImage.hNewBitmap);
::DeleteObject(m_entryImage.hNewDIB);
return bFlag;
}
/////////////////////////////////////////////////////////////////////////////
// CImageView 剪贴板
void CImageView::OnEditClear()
{
if (OpenClipboard())
{
EmptyClipboard();
CloseClipboard();
}
}
void CImageView::OnUpdateEditClear(CCmdUI* pCmdUI)
{
// TODO: Add your command update UI handler code here
pCmdUI->Enable(::IsClipboardFormatAvailable(CF_DIB));
//当剪贴板为空，ID_EDIT_CLEAR菜单项不可用
}
void CImageView::OnEditCopy()
{
// TODO: Add your command handler code here
CImageDoc* pDoc = GetDocument();
// Clean clipboard of contents, and copy the DIB.
if (OpenClipboard())
{
BeginWaitCursor();
EmptyClipboard();
SetClipboardData (CF_DIB, ::CopyHandle((HANDLE) pDoc->GetHDIB()) );
CloseClipboard();
EndWaitCursor();
}
}
void CImageView::OnUpdateEditCopy(CCmdUI* pCmdUI)
{
// TODO: Add your command update UI handler code here
pCmdUI->Enable(GetDocument()->GetHDIB() != NULL);
//当内存DIB为空，ID_EDIT_COPY菜单项不可用
}
void CImageView::OnEditCut()
{
// TODO: Add your command handler code here
CImageDoc* pDoc = GetDocument();
// Clean clipboard of contents, and copy the DIB.
BeginWaitCursor();
if (pDoc->GetHDIB() != NULL)
{
if (OpenClipboard())
{
EmptyClipboard();
SetClipboardData (CF_DIB, ::CopyHandle((HANDLE) pDoc->GetHDIB()) );
CloseClipboard();
}
pDoc->ReplaceHDIB((HDIB)NULL); // and free the old DIB
pDoc->InitDIBData(); // set up new size & palette
pDoc->SetModifiedFlag(TRUE);
SetScrollSizes(MM_TEXT, pDoc->GetDocSize());
// OnDoRealize((WPARAM)m_hWnd,0); // realize the new palette
pDoc->UpdateAllViews(NULL);
}
EndWaitCursor();
}
void CImageView::OnUpdateEditCut(CCmdUI* pCmdUI)
{
// TODO: Add your command update UI handler code here
pCmdUI->Enable(GetDocument()->GetHDIB() != NULL);
//当内存DIB为空，ID_EDIT_CUT菜单项不可用
}
void CImageView::OnEditPaste()
{
// TODO: Add your command handler code here
HDIB hNewDIB = NULL;
if (OpenClipboard())
{
BeginWaitCursor();
hNewDIB = (HDIB) CopyHandle(::GetClipboardData(CF_DIB));
CloseClipboard();
if (hNewDIB != NULL)
{
CImageDoc* pDoc = GetDocument();
pDoc->ReplaceHDIB(hNewDIB); // and free the old DIB
pDoc->InitDIBData(); // set up new size & palette
pDoc->SetModifiedFlag(TRUE);
SetScrollSizes(MM_TEXT, pDoc->GetDocSize());
// OnDoRealize((WPARAM)m_hWnd,0); // realize the new palette
pDoc->UpdateAllViews(NULL);
}
EndWaitCursor();
}
}
void CImageView::OnUpdateEditPaste(CCmdUI* pCmdUI)
{
// TODO: Add your command update UI handler code here
pCmdUI->Enable(::IsClipboardFormatAvailable(CF_DIB));
//当剪贴板为空，ID_EDIT_PASTE菜单项不可用
}
void CImageView::OnEditRedo()
{
CImageDoc* pDoc = GetDocument();
HGLOBAL hNew = NULL;
HGLOBAL hData = pDoc->GetHDIB() ;//在此准备Undo数据
if (m_stkUnRedo.HasRedo())
{
BeginWaitCursor();
hNew = m_stkUnRedo.Redo(hData);
if (hNew != NULL)
{
//在此处利用该Redo句柄
pDoc->ReplaceHDIB((HDIB)hNew); // and free the old DIB
pDoc->InitDIBData(); // set up new size & palette
pDoc->SetModifiedFlag(TRUE);
SetScrollSizes(MM_TEXT, pDoc->GetDocSize());
pDoc->UpdateAllViews(NULL);
}
EndWaitCursor();
}
}
void CImageView::OnUpdateEditRedo(CCmdUI* pCmdUI)
{
// TODO: Add your command update UI handler code here
pCmdUI->Enable(m_stkUnRedo.HasRedo());
//当Redo备份句柄为空，ID_EDIT_REDO菜单项不可用
}
void CImageView::OnEditSelectAll()
{
// TODO: Add your command handler code here
//设置区域为全图象
if(GetDocument()==NULL) return;
CSize size=GetDocument()->GetDocSize();
CRgn rgnImage;
rgnImage.CreateRectRgn(0,0,size.cx,size.cy);
m_Region.DeleteObject();
m_Region.Attach(rgnImage.Detach());
GetDocument()->UpdateAllViews(NULL); //更新显示区域边缘
}
void CImageView::OnEditUndo()
{
CImageDoc* pDoc = GetDocument();
HGLOBAL hNew = NULL;
HGLOBAL hData = pDoc->GetHDIB() ;//在此准备Undo数据
if (m_stkUnRedo.HasUndo())
{
BeginWaitCursor();
hNew = m_stkUnRedo.Undo(hData);
if (hNew != NULL)
{
//在此处利用该Undo句柄
pDoc->ReplaceHDIB((HDIB)hNew); // and free the old DIB
pDoc->InitDIBData(); // set up new size & palette
pDoc->SetModifiedFlag(TRUE);
SetScrollSizes(MM_TEXT, pDoc->GetDocSize());
pDoc->UpdateAllViews(NULL);
}
EndWaitCursor();
}
}
void CImageView::OnUpdateEditUndo(CCmdUI* pCmdUI)
{
// TODO: Add your command update UI handler code here
pCmdUI->Enable(m_stkUnRedo.HasUndo());
//当Undo备份句柄为空，ID_EDIT_UNDO菜单项不可用
}
/////////////////////////////////////////////////////////////////////////////
// CImageView 打印
/*MFC的默认打印流程
ID_FILE_PRINT \
-> CView::OnFilePrint() \
ID_FILE_PRINT_PREVIEW | ==>
-> CView::OnFilePrintPreview() /
CView::DoPrintPreview /
CMyView::OnPreparePrinting(CPrintInfo* pInfo )
CView::DoPreparePrinting( CPrintInfo* pInfo )
对话框 CPrintDialog.DoModal();
创建打印设备描述表
打印进程对话框AFX_IDD_PRINTDLG
CMyView::OnBeginPrinting( CDC* pDC, CPrintInfo* pInfo )
CDC::StartDoc( LPDOCINFO lpDocInfo )
┌─> CMyView::OnPrepareDC( CDC* pDC, CPrintInfo* pInfo = NULL )
│ CDC::StartPage()
│ CMyView::OnPrint( CDC* pDC, CPrintInfo* pInfo )
│ CMyView::OnDraw(CDC* pDC)
│ {
│ if(pDC->IsPrinting()) {.......}
│ }
└─ CDC::EndPage()
CDC::EndDoc()
CMyView::OnEndPrinting( CDC* pDC, CPrintInfo* pInfo )
*/
BOOL CImageView::OnPreparePrinting(CPrintInfo* pInfo)
{
// default preparation
return DoPreparePrinting(pInfo);
}
void CImageView::OnBeginPrinting(CDC* pDC, CPrintInfo* pInfo)
{
// TODO: add extra initialization before printing
CView::OnBeginPrinting(pDC,pInfo);
}
void CImageView::OnEndPrinting(CDC* pDC, CPrintInfo* pInfo)
{
// TODO: add cleanup after printing
CView::OnEndPrinting(pDC,pInfo);
}
void CImageView::OnPrint(CDC* pDC, CPrintInfo* pInfo)
{
// TODO: add code to print the controls
CView::OnPrint(pDC, pInfo);//call OnDraw(pDC)
}
void CImageView::UpdateDocument(HDIB hNewDIB)
{
if (hNewDIB != NULL)
{
CImageDoc* pDoc = GetDocument();
CSize sizeOld= pDoc->GetDocSize();
pDoc->ReplaceHDIB(hNewDIB); // and free the old DIB
// pDoc->InitDIBData(); // set up new size & palette
// pDoc->SetModifiedFlag(TRUE);
// SetScrollSizes(MM_TEXT, pDoc->GetDocSize());
// OnDoRealize((WPARAM)m_hWnd,0); // realize the new palette
// pDoc->UpdateAllViews(NULL);
CSize size=pDoc->GetDocSize();
SetScrollSizes(MM_TEXT, size);
//若大小改变则重设区域
if(size.cx == sizeOld.cx && size.cy == sizeOld.cy)
return;
else
{
CRgn rgnImage;
rgnImage.CreateRectRgn(0,0,size.cx,size.cy);
m_Region.DeleteObject();
m_Region.Attach(rgnImage.Detach());
}
}
}
/////////////////////////////////////////////////////////////////////////////
// CImageView 鼠标处理
void CImageView::OnLButtonDblClk(UINT nFlags, CPoint point)
{
// TODO: Add your message handler code here and/or call default
switch(m_nMouseFunction)
{
case MOUSE_REGION:
LButtonDblClkRegion(nFlags,point);
break;
};
}
void CImageView::LButtonDblClkRegion(UINT nFlags, CPoint point)
{ //取消当前选中区域，恢复为全图象
m_Region.Clear();
OnEditSelectAll();
CFormView::OnLButtonDblClk(nFlags, point);
}
void CImageView::OnLButtonDown(UINT nFlags, CPoint point)
{
// TODO: Add your message handler code here and/or call default
// Pressing the mouse button in the view window starts a new stroke
switch(m_nMouseFunction)
{
case MOUSE_REGION:
LButtonDownRegion(nFlags,point);
break;
};
}
void CImageView::LButtonDownRegion(UINT nFlags, CPoint point)
{
if( m_nRegionTool == RGNMARK_NONE)
return;
SetCapture(); // Capture the mouse until button up.
m_ptPrev = point; // Serves as the MoveTo() anchor point for the
// LineTo() the next point, as the user drags the
// mouse.
switch(m_nRegionTool)
{
case RGNMARK_FREEHAND:
m_Region.Clear();
// Add first point to the new stroke
m_Region.m_pointArray.Add(point);
break;
case RGNMARK_RECT:
case RGNMARK_ROUNDRECT:
case RGNMARK_ELLIPSE:
m_ptPrev2 = point;
break;
};
}
void CImageView::OnLButtonUp(UINT nFlags, CPoint point)
{
switch(m_nMouseFunction)
{
case MOUSE_REGION:
LButtonUpRegion(nFlags,point);
break;
};
}
/*
范例，取反
void Process(HDC hDC,CRect rect)
{
for(int x=rect.left;x<=rect.right;x++)
for(int y=rect.top;y<=rect.bottom;y++)
{
::SetPixelV(hDC,x,y,0x00FFFFFF-::GetPixel(hDC,x,y));
}
}
*/
void CImageView::LButtonUpRegion(UINT nFlags, CPoint point)
{
if( m_nRegionTool == RGNMARK_NONE)
return;
CImageDoc* pDoc = GetDocument();
CSize size=pDoc->GetDocSize();
CClientDC dc(this);
CRgn rgn;//绘图产生的区域
CRgn rgnImage;//全图象区域
// rgnImage.DeleteObject();
rgnImage.CreateRectRgn(0,0,size.cx,size.cy);
if (GetCapture() != this)
return; // If this window (view) didn't capture the mouse,
// then the user isn't drawing in this window.
// Mouse button up is interesting in the Scribble application
// only if the user is currently drawing a new stroke by dragging
// the captured mouse.
switch(m_nRegionTool)
{
case RGNMARK_FREEHAND:
// dc.MoveTo(m_ptPrev);
// dc.LineTo(point);
m_Region.m_pointArray.Add(point);
//建立区域
if(!m_Region.CreateRegion(&rgn,m_nRegionFillMode))
{
AfxMessageBox(_T("区域选择失败"));
return;
}
break;
case RGNMARK_RECT:
rgn.CreateRectRgn(m_ptPrev.x,m_ptPrev.y,point.x,point.y);
break;
case RGNMARK_ELLIPSE:
rgn.CreateEllipticRgn(m_ptPrev.x,m_ptPrev.y,point.x,point.y);
break;
case RGNMARK_ROUNDRECT:
rgn.CreateRoundRectRgn(m_ptPrev.x,m_ptPrev.y,point.x,point.y,
20,20);//圆角半径20
break;
};
if(rgn.m_hObject == NULL)
{
rgn.CreateRectRgn(0,0,0,0);
}
ClientToDoc(rgn); //转换为文档坐标
//求区域与图象的交
rgn.CombineRgn(&rgn,&rgnImage,RGN_AND);
//根据区域合并模式确定目标区域
if(m_nRegionCombineMode== RGN_DIFF)
rgn.CombineRgn(&m_Region,&rgn,m_nRegionCombineMode);
else
rgn.CombineRgn(&rgn,&m_Region,m_nRegionCombineMode);
//置当前区域为该区域
m_Region.DeleteObject();
m_Region.Attach(rgn.Detach());
pDoc->UpdateAllViews(NULL);
ReleaseCapture(); // Release the mouse capture established at
// the beginning of the mouse drag.
AutoProcessing();//自动处理
return;
}
void CImageView::OnMouseMove(UINT nFlags, CPoint point)
{
// TODO: Add your message handler code here and/or call default
switch(m_nMouseFunction)
{
case MOUSE_REGION:
MouseMoveRegion(nFlags,point);
break;
};
}
void CImageView::MouseMoveRegion(UINT nFlags, CPoint point)
{
if((nFlags & MK_LBUTTON) !=0 )//左键按下
{
//do somthing
}
else//左键未按下
{
return;
}
if (GetCapture() != this)
return; // If this window (view) didn't capture the mouse,
// then the user isn't drawing in this window.
CImageDoc* pDoc = GetDocument();
CSize size=pDoc->GetDocSize();
CClientDC dc(this);
CRgn rgn;
CRgn rgnImage;
CBrush* pOldBrush;
rgnImage.CreateRectRgn(0,0,size.cx,size.cy);
switch(m_nRegionTool)
{
case RGNMARK_FREEHAND:
m_Region.m_pointArray.Add(point);
//将当前裁剪区置为该区域
dc.SelectClipRgn(&rgnImage);
dc.MoveTo(m_ptPrev);
dc.LineTo(point);
m_ptPrev = point;
break;
case RGNMARK_RECT:
//清除上次绘制
pOldBrush = (CBrush*)dc.SelectStockObject(NULL_BRUSH);
dc.SetROP2(R2_NOT);//反色
dc.Rectangle(m_ptPrev.x,m_ptPrev.y,m_ptPrev2.x,m_ptPrev2.y);
//反反得正
m_ptPrev2 = point;
dc.Rectangle(m_ptPrev.x,m_ptPrev.y,point.x,point.y);
dc.SelectObject(pOldBrush);
break;
case RGNMARK_ELLIPSE:
//清除上次绘制
pOldBrush = (CBrush*)dc.SelectStockObject(NULL_BRUSH);
dc.SetROP2(R2_NOT);//反色
dc.Ellipse(m_ptPrev.x,m_ptPrev.y,m_ptPrev2.x,m_ptPrev2.y);
//反反得正
m_ptPrev2 = point;
dc.Ellipse(m_ptPrev.x,m_ptPrev.y,point.x,point.y);
dc.SelectObject(pOldBrush);
break;
case RGNMARK_ROUNDRECT:
//清除上次绘制
pOldBrush = (CBrush*)dc.SelectStockObject(NULL_BRUSH);
dc.SetROP2(R2_NOT);//反色
dc.RoundRect(m_ptPrev.x,m_ptPrev.y,m_ptPrev2.x,m_ptPrev2.y,
20,20);//圆角半径20
//反反得正
m_ptPrev2 = point;
dc.RoundRect(m_ptPrev.x,m_ptPrev.y,point.x,point.y,
20,20);
dc.SelectObject(pOldBrush);
break;
};
return;
}
BOOL CImageView::OnScroll(UINT nScrollCode, UINT nPos, BOOL bDoScroll)
{
CImageDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
HDIB hDIB = pDoc->GetHDIB();
/* //1998.12.26设置背景色
CClientDC dc(this);
dc.SetBkColor(RGB(255,255,255));
CBrush brush(HS_DIAGCROSS,RGB(192,192,192) );
CRect rectWnd;
GetClientRect(&rectWnd);
dc.FillRect(&rectWnd,&brush);
*/
// Invalidate();
return CFormView::OnScroll(nScrollCode, nPos, bDoScroll);
}
/*1998.12.27 灰度图象使用，设置
m_entryImage.hDIB //源位图句柄
m_entryImage.pImage //源位图数据开始位（用于灰度图）
m_entryImage.rectImage //包围选中区域的最小矩形
m_entryImage.sizeImage //图象大小
*/
BOOL CImageView::BeginUseGray()
{
CImageDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
if(pDoc->GetHDIB()==NULL) return FALSE;
m_entryImage.hDIB=NULL; //源位图句柄
m_entryImage.hNewDIB=NULL; //生成目标位图句柄
m_entryImage.pImage=NULL; //源位图数据开始位（用于灰度图）
m_entryImage.pNewImage=NULL; //目标位图数据开始位（用于灰度图）
m_entryImage.hBitmap=NULL; //源临时中间设备相关位图句柄
m_entryImage.hNewBitmap=NULL; //目标临时中间设备相关位图句柄
m_entryImage.hMemDC=NULL; //源位图设备
m_entryImage.hNewDC=NULL; //目标位图设备
m_entryImage.rectImage=CRect(0,0,1,1); //包围选中区域的最小矩形
m_entryImage.sizeImage=CSize(1,1); //图象大小
//求出包围区域的最小矩形
m_Region.GetRgnBox(&(m_entryImage.rectImage));
m_entryImage.sizeImage.cx=pDoc->GetDocSize().cx;
m_entryImage.sizeImage.cy=pDoc->GetDocSize().cy;