ch1_1view.cpp

《VisualC++数字图像处理》配套源代码

// ch1_1View.cpp : implementation of the CCh1_1View class
//

#include "stdafx.h"
#include "ch1_1.h"

#include "ch1_1Doc.h"
#include "ch1_1View.h"
#include "mainfrm.h"
#include "DlgIntensity.h"
#include "DlgLinerPara.h"
#include "DlgPointThre.h"
#include "DlgPointWin.h"
#include "DlgPointStre.h"
#include "DlgGeoTran.h"
#include "DlgGeoZoom.h"
#include "DlgGeoRota.h"
#include "DlgSmooth.h"
#include "DlgMidFilter.h"
#include "DlgSharpThre.h"
#include "DlgColor.h"
#include "ColorTable.h"

#include "cDlgMorphErosion.h"
#include "cDlgMorphDilation.h"
#include "cDlgMorphOpen.h"
#include "cDlgMorphClose.h"

#include "DlgHuffman.h"
#include "DlgShannon.h"
#include "DlgCodeGIF.h"

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

/////////////////////////////////////////////////////////////////////////////
// CCh1_1View

IMPLEMENT_DYNCREATE(CCh1_1View, CScrollView)

BEGIN_MESSAGE_MAP(CCh1_1View, CScrollView)
	//{{AFX_MSG_MAP(CCh1_1View)
	ON_WM_ERASEBKGND()
	ON_COMMAND(ID_EDIT_COPY, OnEditCopy)
	ON_COMMAND(ID_EDIT_PASTE, OnEditPaste)
	ON_UPDATE_COMMAND_UI(ID_EDIT_COPY, OnUpdateEditCopy)
	ON_UPDATE_COMMAND_UI(ID_EDIT_PASTE, OnUpdateEditPaste)
	ON_COMMAND(ID_GEOM_TRAN, OnGeomTran)
	ON_COMMAND(ID_GEOM_MIRV, OnGeomMirv)
	ON_COMMAND(ID_GEOM_MIRH, OnGeomMirh)
	ON_COMMAND(ID_GEOM_ROTA, OnGeomRota)
	ON_COMMAND(ID_GEOM_TRPO, OnGeomTrpo)
	ON_COMMAND(ID_GEOM_ZOOM, OnGeomZoom)
	ON_COMMAND(ID_POINT_INVERT, OnPointInvert)
	ON_COMMAND(ID_POINT_EQUA, OnPointEqua)
	ON_COMMAND(ID_POINT_LINER, OnPointLiner)
	ON_COMMAND(ID_POINT_WIND, OnPointWind)
	ON_COMMAND(ID_VIEW_INTENSITY, OnViewIntensity)
	ON_COMMAND(ID_POINT_STRE, OnPointStre)
	ON_COMMAND(ID_FREQ_FOUR, OnFreqFour)
	ON_COMMAND(ID_FREQ_DCT, OnFreqDct)
	ON_COMMAND(ID_POINT_THRE, OnPointThre)
	ON_COMMAND(ID_ENHA_SMOOTH, OnEnhaSmooth)
	ON_COMMAND(ID_ENHA_MidianF, OnENHAMidianF)
	ON_COMMAND(ID_ENHA_SHARP, OnEnhaSharp)
	ON_COMMAND(ID_ENHA_COLOR, OnEnhaColor)
	ON_COMMAND(ID_FILE_256ToGray, OnFILE256ToGray)
	ON_COMMAND(ID_ENHA_GRADSHARP, OnEnhaGradsharp)
	ON_COMMAND(ID_FREQ_WALH, OnFreqWalh)
	ON_COMMAND(ID_CODE_HUFFMAN, OnCodeHuffman)
	ON_COMMAND(ID_CODE_RLE, OnCodeRLE)
	ON_COMMAND(ID_CODE_IRLE, OnCodeIRLE)
	ON_COMMAND(ID_CODE_JEPG, OnCodeJEPG)
	ON_COMMAND(ID_CODE_IJEPG, OnCodeIJEPG)
	ON_COMMAND(ID_CODE_SHANNON, OnCodeShannon)
	ON_COMMAND(ID_MORPH_EROSION, OnMorphErosion)
	ON_COMMAND(ID_MORPH_DILATION, OnMorphDilation)
	ON_COMMAND(ID_MORPH_OPEN, OnMorphOpen)
	ON_COMMAND(ID_MORPH_CLOSE, OnMorphClose)
	ON_COMMAND(ID_MORPH_THINING, OnMorphThining)
	ON_COMMAND(ID_EDGE_FILL, OnEdgeFill)
	ON_COMMAND(ID_EDGE_GAUSS, OnEdgeGauss)
	ON_COMMAND(ID_EDGE_HOUGH, OnEdgeHough)
	ON_COMMAND(ID_EDGE_KIRSCH, OnEdgeKirsch)
	ON_COMMAND(ID_EDGE_PREWITT, OnEdgePrewitt)
	ON_COMMAND(ID_EDGE_ROBERT, OnEdgeRobert)
	ON_COMMAND(ID_EDGE_SOBEL, OnEdgeSobel)
	ON_COMMAND(ID_EDGE_TRACE, OnEdgeTrace)
	ON_COMMAND(ID_DETECT_HPROJECTION, OnDetectHprojection)
	ON_COMMAND(ID_DETECT_MINUS, OnDetectMinus)
	ON_COMMAND(ID_DETECT_TEMPLATE, OnDetectTemplate)
	ON_COMMAND(ID_DETECT_THRESHOLD, OnDetectThreshold)
	ON_COMMAND(ID_DETECT_VPROJECTION, OnDetectVprojection)
	ON_COMMAND(ID_RESTORE_BLUR, OnRestoreBlur)
	ON_COMMAND(ID_RESTORE_INVERSE, OnRestoreInverse)
	ON_COMMAND(ID_RESTORE_NOISEBLUR, OnRestoreNoiseblur)
	ON_COMMAND(ID_RESTORE_RANDOMNOISE, OnRestoreRandomnoise)
	ON_COMMAND(ID_RESTORE_SALTNOISE, OnRestoreSaltnoise)
	ON_COMMAND(ID_RESTORE_WIENER, OnRestoreWiener)
	ON_COMMAND(ID_EDGE_CONTOUR, OnEdgeContour)
	ON_COMMAND(ID_CODE_LZW, OnCodeLzw)
	ON_COMMAND(ID_CODE_ILZW, OnCodeIlzw)
	ON_COMMAND(ID_EDGE_FILL2, OnEdgeFill2)
	//}}AFX_MSG_MAP
	// Standard printing commands
	ON_COMMAND(ID_FILE_PRINT, CScrollView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_DIRECT, CScrollView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_PREVIEW, CScrollView::OnFilePrintPreview)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CCh1_1View construction/destruction

CCh1_1View::CCh1_1View()
{
	// TODO: add construction code here

}

CCh1_1View::~CCh1_1View()
{
}

BOOL CCh1_1View::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CCh1_1View drawing

void CCh1_1View::OnDraw(CDC* pDC)
{
	
	// 显示等待光标
	BeginWaitCursor();
	
	// 获取文档
	CCh1_1Doc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	
	// 获取DIB
	HDIB hDIB = pDoc->GetHDIB();
	
	// 判断DIB是否为空
	if (hDIB != NULL)
	{
		LPSTR lpDIB = (LPSTR) ::GlobalLock((HGLOBAL) hDIB);
		
		// 获取DIB宽度
		int cxDIB = (int) ::DIBWidth(lpDIB);
		
		// 获取DIB高度
		int cyDIB = (int) ::DIBHeight(lpDIB);

		::GlobalUnlock((HGLOBAL) hDIB);
		
		CRect rcDIB;
		rcDIB.top = rcDIB.left = 0;
		rcDIB.right = cxDIB;
		rcDIB.bottom = cyDIB;
		
		CRect rcDest;
		
		// 判断是否是打印
		if (pDC->IsPrinting())
		{
			// 是打印，计算输出图像的位置和大小，以便符合页面
			
			// 获取打印页面的水平宽度(象素)
			int cxPage = pDC->GetDeviceCaps(HORZRES);
			
			// 获取打印页面的垂直高度(象素)
			int cyPage = pDC->GetDeviceCaps(VERTRES);
			
			// 获取打印机每英寸象素数
			int cxInch = pDC->GetDeviceCaps(LOGPIXELSX);
			int cyInch = pDC->GetDeviceCaps(LOGPIXELSY);
			
			// 计算打印图像大小（缩放，根据页面宽度调整图像大小）
			rcDest.top = rcDest.left = 0;
			rcDest.bottom = (int)(((double)cyDIB * cxPage * cyInch)
					/ ((double)cxDIB * cxInch));
			rcDest.right = cxPage;
			
			// 计算打印图像位置（垂直居中）
			int temp = cyPage - (rcDest.bottom - rcDest.top);
			rcDest.bottom += temp/2;
			rcDest.top += temp/2;

		}
		else   
		// 非打印
		{
			// 不必缩放图像
			rcDest = rcDIB;
		}
		
		// 输出DIB
		::PaintDIB(pDC->m_hDC, &rcDest, pDoc->GetHDIB(),
			&rcDIB, pDoc->GetDocPalette());
	}
	
	// 恢复正常光标
	EndWaitCursor();
	
}

/////////////////////////////////////////////////////////////////////////////
// CCh1_1View printing

BOOL CCh1_1View::OnPreparePrinting(CPrintInfo* pInfo)
{
	// 设置总页数为一。
	pInfo->SetMaxPage(1);

	return DoPreparePrinting(pInfo);
}

void CCh1_1View::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add extra initialization before printing
}

void CCh1_1View::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add cleanup after printing
}

/////////////////////////////////////////////////////////////////////////////
// CCh1_1View diagnostics

#ifdef _DEBUG
void CCh1_1View::AssertValid() const
{
	CView::AssertValid();
}

void CCh1_1View::Dump(CDumpContext& dc) const
{
	CView::Dump(dc);
}

CCh1_1Doc* CCh1_1View::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CCh1_1Doc)));
	return (CCh1_1Doc*)m_pDocument;
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CCh1_1View message handlers


BOOL CCh1_1View::OnEraseBkgnd(CDC* pDC) 
{
	// 主要是为了设置子窗体默认的背景色
	// 背景色由文档成员变量m_refColorBKG指定

	// 获取文档
	CCh1_1Doc* pDoc = GetDocument();

	// 创建一个Brush
	CBrush brush(pDoc->m_refColorBKG);                                              
                                                                                  
	// 保存以前的Brush
	CBrush* pOldBrush = pDC->SelectObject(&brush);
	
	// 获取重绘区域
	CRect rectClip;
	pDC->GetClipBox(&rectClip);
	
	// 重绘
	pDC->PatBlt(rectClip.left, rectClip.top, rectClip.Width(), rectClip.Height(), PATCOPY);

	// 恢复以前的Brush
	pDC->SelectObject(pOldBrush);                                                  

	// 返回
	return TRUE;

}

LRESULT CCh1_1View::OnDoRealize(WPARAM wParam, LPARAM)
{
	ASSERT(wParam != NULL);

	// 获取文档
	CCh1_1Doc* pDoc = GetDocument();
	
	// 判断DIB是否为空
	if (pDoc->GetHDIB() == NULL)
	{
		// 直接返回
		return 0L;
	}
	
	// 获取Palette
	CPalette* pPal = pDoc->GetDocPalette();
	if (pPal != NULL)
	{
		// 获取MainFrame
		CMainFrame* pAppFrame = (CMainFrame*) AfxGetApp()->m_pMainWnd;
		ASSERT_KINDOF(CMainFrame, pAppFrame);
		
		CClientDC appDC(pAppFrame);

		// All views but one should be a background palette.
		// wParam contains a handle to the active view, so the SelectPalette
		// bForceBackground flag is FALSE only if wParam == m_hWnd (this view)
		CPalette* oldPalette = appDC.SelectPalette(pPal, ((HWND)wParam) != m_hWnd);
		
		if (oldPalette != NULL)
		{
			UINT nColorsChanged = appDC.RealizePalette();
			if (nColorsChanged > 0)
				pDoc->UpdateAllViews(NULL);
			appDC.SelectPalette(oldPalette, TRUE);
		}
		else
		{
			TRACE0("\tCCh1_1View::OnPaletteChanged中调用SelectPalette()失败！\n");
		}
	}
	
	return 0L;
}

void CCh1_1View::OnInitialUpdate() 
{
	CView::OnInitialUpdate();
	
	// TODO: Add your specialized code here and/or call the base class
	
}

void CCh1_1View::CalcWindowRect(LPRECT lpClientRect, UINT nAdjustType) 
{
	CScrollView::OnInitialUpdate();
	ASSERT(GetDocument() != NULL);
	
	SetScrollSizes(MM_TEXT, GetDocument()->GetDocSize());
}

void CCh1_1View::OnActivateView(BOOL bActivate, CView* pActivateView,
					CView* pDeactiveView)
{
	CScrollView::OnActivateView(bActivate, pActivateView, pDeactiveView);

	if (bActivate)
	{
		ASSERT(pActivateView == this);
		OnDoRealize((WPARAM)m_hWnd, 0);   // same as SendMessage(WM_DOREALIZE);
	}
}

void CCh1_1View::OnEditCopy() 
{
	// 复制当前图像

	// 获取文档
	CCh1_1Doc* pDoc = GetDocument();
	
	// 打开剪贴板
	if (OpenClipboard())
	{
		// 更改光标形状
		BeginWaitCursor();
		
		// 清空剪贴板
		EmptyClipboard();
		
		// 复制当前图像到剪贴板
		SetClipboardData (CF_DIB, CopyHandle((HANDLE) pDoc->GetHDIB()) );
		
		// 关闭剪贴板
		CloseClipboard();
		
		// 恢复光标
		EndWaitCursor();
	}
}

void CCh1_1View::OnEditPaste() 
{
	// 粘贴图像
	
	// 创建新DIB
	HDIB hNewDIB = NULL;
	
	// 打开剪贴板
	if (OpenClipboard())
	{
		// 更改光标形状
		BeginWaitCursor();

		// 读取剪贴板中的图像
		hNewDIB = (HDIB) CopyHandle(::GetClipboardData(CF_DIB));

		// 关闭剪贴板
		CloseClipboard();
		
		// 判断是否读取成功
		if (hNewDIB != NULL)
		{
			// 获取文档
			CCh1_1Doc* pDoc = GetDocument();

			// 替换DIB，同时释放旧DIB对象
			pDoc->ReplaceHDIB(hNewDIB);

			// 更新DIB大小和调色板
			pDoc->InitDIBData();

			// 设置脏标记
			pDoc->SetModifiedFlag(TRUE);
			
			// 重新设置滚动视图大小
			SetScrollSizes(MM_TEXT, pDoc->GetDocSize());

			// 实现新的调色板
			OnDoRealize((WPARAM)m_hWnd,0);

			// 更新视图
			pDoc->UpdateAllViews(NULL);
		}
		// 恢复光标
		EndWaitCursor();
	}
}

void CCh1_1View::OnUpdateEditCopy(CCmdUI* pCmdUI) 
{
	// 如果当前DIB对象不空，复制菜单项有效
	pCmdUI->Enable(GetDocument()->GetHDIB() != NULL);
}

void CCh1_1View::OnUpdateEditPaste(CCmdUI* pCmdUI) 
{
	// 如果当前剪贴板中有DIB对象，粘贴菜单项有效
	pCmdUI->Enable(::IsClipboardFormatAvailable(CF_DIB));
}

void CCh1_1View::OnViewIntensity() 
{
	// 查看当前图像灰度直方图
	
	// 获取文档
	CCh1_1Doc* pDoc = GetDocument();
	
	// 指向DIB的指针
	LPSTR lpDIB;
	
	// 指向DIB象素指针
	LPSTR    lpDIBBits;
	
	// 锁定DIB
	lpDIB = (LPSTR) ::GlobalLock((HGLOBAL) pDoc->GetHDIB());
	
	// 找到DIB图像象素起始位置
	lpDIBBits = ::FindDIBBits(lpDIB);
	
	// 判断是否是8-bpp位图（这里为了方便，只处理8-bpp位图，其它的可以类推）
	if (::DIBNumColors(lpDIB) != 256)
	{
		// 提示用户
		MessageBox("目前只支持查看256色位图灰度直方图！", "系统提示" , MB_ICONINFORMATION | MB_OK);
		
		// 解除锁定
		::GlobalUnlock((HGLOBAL) pDoc->GetHDIB());
		
		// 返回
		return;
	}
	
	// 更改光标形状
	BeginWaitCursor();
	
	// 创建对话框
	CDlgIntensity dlgPara;
	
	// 初始化变量值
	dlgPara.m_lpDIBBits = lpDIBBits;
	dlgPara.m_lWidth = ::DIBWidth(lpDIB);
	dlgPara.m_lHeight = ::DIBHeight(lpDIB);
	dlgPara.m_iLowGray = 0;
	dlgPara.m_iUpGray = 255;
	
	// 显示对话框，提示用户设定平移量
	if (dlgPara.DoModal() != IDOK)
	{
		// 返回
		return;
	}
	
	// 解除锁定
	::GlobalUnlock((HGLOBAL) pDoc->GetHDIB());

	// 恢复光标
	EndWaitCursor();
	
}

//////////////////////////////////////////////////////////////////////////////////////
//  图像点运算
//
void CCh1_1View::OnPointInvert() 
{
	// 图像反色
	
	// 获取文档
	CCh1_1Doc* pDoc = GetDocument();
	
	// 指向DIB的指针
	LPSTR lpDIB;
	
	// 指向DIB象素指针
	LPSTR    lpDIBBits;
	
	// 线性变换的斜率
	FLOAT fA;
	
	// 线性变换的截距
	FLOAT fB;
	
	// 反色操作的线性变换的方程是-x + 255
	fA = -1.0;
	fB = 255.0;
	
	// 锁定DIB
	lpDIB = (LPSTR) ::GlobalLock((HGLOBAL) pDoc->GetHDIB());

	// 找到DIB图像象素起始位置
	lpDIBBits = ::FindDIBBits(lpDIB);
	
	// 判断是否是8-bpp位图（这里为了方便，只处理8-bpp位图的反色，其它的可以类推）
	if (::DIBNumColors(lpDIB) != 256)
	{
		// 提示用户
		MessageBox("目前只支持256色位图的反色！", "系统提示" , MB_ICONINFORMATION | MB_OK);
		
		// 解除锁定
		::GlobalUnlock((HGLOBAL) pDoc->GetHDIB());
		
		// 返回
		return;
	}
	
	// 更改光标形状
	BeginWaitCursor();
	
	// 调用LinerTrans()函数反色
	LinerTrans(lpDIBBits, ::DIBWidth(lpDIB), ::DIBHeight(lpDIB), fA, fB);
	
	// 设置脏标记
	pDoc->SetModifiedFlag(TRUE);
	
	// 更新视图
	pDoc->UpdateAllViews(NULL);
	
	// 解除锁定
	::GlobalUnlock((HGLOBAL) pDoc->GetHDIB());

	// 恢复光标
	EndWaitCursor();
	
}

void CCh1_1View::OnPointLiner() 
{
	// 线性变换
	
	// 获取文档
	CCh1_1Doc* pDoc = GetDocument();
	
	// 指向DIB的指针
	LPSTR lpDIB;
	
	// 指向DIB象素指针
	LPSTR    lpDIBBits;
	
	// 创建对话框
	CDlgLinerPara dlgPara;
	
	// 线性变换的斜率
	FLOAT fA;
	
	// 线性变换的截距
	FLOAT fB;