hexeditview.cpp

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// HexEditView.cpp : 实现文件
//

#include "stdafx.h"
#include "GameMaster.h"
#include "HexEditView.h"

#include "GameMasterDoc.h"
#include ".\hexeditview.h"

const int block = 1024 * 4;
static int block_num = 1;
// CHexEditView

IMPLEMENT_DYNCREATE(CHexEditView, CView)

CHexEditView::CHexEditView()
{
	m_nTopLine = 0;
	m_nLeftChar = 0;
	strText = NULL;
	m_bFirst = TRUE;
	m_bStartDrag = FALSE;
////////////////此部分关于动态获得文件长度和字体高度尚未解决/////////////////////
	//m_nRows = 100;
	//m_nLineHeight = 16;
////////////////此部分关于动态获得文件长度和字体高度尚未解决/////////////////////
}

CHexEditView::~CHexEditView()
{
	if(strText!=NULL)
	{
		delete strText;
		strText = NULL;
	}
}

BEGIN_MESSAGE_MAP(CHexEditView, CView)
ON_WM_SIZE()
ON_WM_VSCROLL()
ON_WM_HSCROLL()
ON_WM_MOUSEWHEEL()
ON_WM_SETFOCUS()
ON_WM_KILLFOCUS()
ON_WM_LBUTTONDOWN()
ON_WM_LBUTTONUP()
ON_WM_MOUSEMOVE()
ON_WM_CHAR()
END_MESSAGE_MAP()


// CHexEditView 绘图

void CHexEditView::OnDraw(CDC* pDC)
{
	CGameMasterDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: 在此添加绘制代码
	
	//获取客户区大小
	CRect rectClient;
	GetClientRect(&rectClient);

	CDC dc;	
	dc.CreateCompatibleDC(pDC);

	CBitmap bm;
	bm.CreateCompatibleBitmap(pDC, rectClient.Width(), rectClient.Height());
	dc.SelectObject(bm);
	dc.SetBoundsRect(&rectClient, DCB_DISABLE);
	//将字体选入设备上下文
	CFont* pOldFont = dc.SelectObject (&font);

	CBrush bkBrush(RGB(255,255,255));
    dc.FillRect(rectClient, &bkBrush);

//////显示数据////////////////////////////////////////////////////////////////////
	UINT lineCY, lineCX;
	UINT dwPos;
	char currentchar[20];
	char text[17];

	int lineBeginPos;
	DWORD showAddress = startAddress;

	m_nHexStart = m_nCharWidth * (14 - m_nLeftChar);	//计算二进制显示开始位置
	m_nTextStart = m_nHexStart + m_nCharWidth * 50;	//计算ASCII码显示开始位置

	for(UINT i = 0; i < m_nPageRows; i++)			//按行显示数据
	{
		lineBeginPos = (m_nTopLine+i)*16;			//计算当前行开始字符相对于总缓冲区的位置
		
		lineCY = i * m_nLineHeight;					//当前行的Y坐标
		sprintf(currentchar, "%08X:", showAddress);

		dc.SetTextColor(::GetSysColor(COLOR_WINDOWTEXT));
		dc.SetBkColor(RGB(255,255,255));

		dc.TextOut (m_nCharWidth*(2-m_nLeftChar), lineCY, currentchar);	//显示地址基值

		memcpy(text,&strText[lineBeginPos],16);	//取当前行数据
		text[16] = '\0';

		for(int l = 0; l < 16; l++)
		{
			if(text[l] < 32)
				text[l] = 46;	//不可见ASCII字符用.表示
		}
		if(lineBeginPos+16 > m_nCharCount)
		{
			text[m_nCharCount%16] = '\0';	//最后的数据不满一行时
		}

		dc.TextOut (m_nTextStart, lineCY, text);//显示右面的ASCII字符

		//被选中时反色显示右面的ASCII字符
		int s = m_nSelStart - lineBeginPos;
		int e = m_nSelEnd - lineBeginPos;
		int selStart = s < 0 ? 0:(m_nSelStart - lineBeginPos);
		int selEnd = e > 15 ? 15:(m_nSelEnd - lineBeginPos);
		if(selStart <= 15 && selEnd >= 0)
		{
			dc.SetBkColor(::GetSysColor ( COLOR_HIGHLIGHT ));
			dc.SetTextColor(::GetSysColor ( COLOR_HIGHLIGHTTEXT ));
			text[selEnd+1]='\0';

			dc.TextOut(m_nTextStart+selStart*m_nCharWidth, lineCY, &text[selStart]);
		}
		else
		{
			dc.SetTextColor(::GetSysColor(COLOR_WINDOWTEXT));
			dc.SetBkColor(RGB(255,255,255));
		}

		for(UINT j = 0; j < 16; j++)
		{
			dwPos = j + lineBeginPos;

			if((int)dwPos > (m_nCharCount-1))
				goto bitblt;			//显示完最后一行退出

			if(dwPos >= m_nSelStart && dwPos <= m_nSelEnd)
			{
				dc.SetBkColor(::GetSysColor ( COLOR_HIGHLIGHT ));
				dc.SetTextColor(::GetSysColor ( COLOR_HIGHLIGHTTEXT ));
			}
			else
			{
				dc.SetTextColor(::GetSysColor(COLOR_WINDOWTEXT));
				dc.SetBkColor(RGB(255,255,255));
			}
			lineCX = m_nHexStart + j * m_nCharWidth *3 ;				//计算当前要显示的二进制字符的位置
			sprintf(currentchar, "%02X", ((UCHAR *)strText)[dwPos]);	
			dc.TextOut (lineCX, lineCY, currentchar);				//显示二进制字符

			if(dwPos == m_nSelEnd)									//选中单个字符的显示
			{
				dc.SetTextColor(::GetSysColor(COLOR_HIGHLIGHTTEXT));
				dc.SetBkColor(RGB(255,0,0));
				UCHAR cHex = strText[dwPos];

				if(m_bFirst)//二进制字符的高四位选中
				{
					cHex = cHex & 0xf0;
					cHex = cHex >> 4;
					sprintf(currentchar, "%X", cHex);
					dc.TextOut (lineCX, lineCY, currentchar);
				}
				else
				{
					lineCX = m_nHexStart + j * m_nCharWidth *3 + m_nCharWidth;
					cHex = cHex & 0x0f;
					sprintf(currentchar, "%X", cHex);
					dc.TextOut (lineCX, lineCY, currentchar);
				}
			}
		}
		showAddress += 16;

	}

bitblt:
	pDC->BitBlt(0, 0, rectClient.Width(), rectClient.Height(), &dc, 0, 0, SRCCOPY);
	dc.DeleteDC ();

//	strText[m_nCharCount] = '\0';
//	pDoc->m_strline = strText;
}
// CHexEditView 诊断

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

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

CGameMasterDoc* CHexEditView::GetDocument() const // 非调试版本是内联的
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CGameMasterDoc)));
	return (CGameMasterDoc*)m_pDocument;
}
#endif //_DEBUG


//自定义函数
void CHexEditView::SetView(DWORD dwAddress,char *text,int nDocChars,LOGFONT lf)
{
	//获取起始地址
	startAddress = dwAddress;
	//获取文件总字节数
	m_nCharCount = nDocChars;
	//获取总行数
	m_nRows = nDocChars/16;
	//获取文件内容
	strText = text;
	block_num = m_nCharCount / block + 1;
	strText = (char *)realloc(strText,block*block_num);
	//设置视图显示字体
	font.CreateFontIndirect(&lf);

	GetDC()->SelectObject(&font);
	CSize size = GetDC()->GetTextExtent("A");
	//设置行高
	m_nLineHeight = size.cy;
	//设置列宽
	m_nCharWidth = size.cx;

	m_nSelStart = m_nSelEnd = 0;
	//获取客户区信息
	GetClientInfo();

	SetVertScrollBar();
	SetHorzScrollBar();
}

void CHexEditView::GetClientInfo()
{

	//获取一页的行数和列数
	CRect rc;
	GetClientRect(rc);
	m_nPageRows = rc.Height()/m_nLineHeight+1;
	m_nPageCols = rc.Width()/m_nCharWidth;
}

//设置滚动条
void CHexEditView::SetVertScrollBar()
{
	if((m_nRows - m_nTopLine + 2) < m_nPageRows)
		m_nTopLine = 0;

	SCROLLINFO si;
	ZeroMemory(&si,sizeof(si));
	si.cbSize = sizeof(si);
	si.fMask = SIF_DISABLENOSCROLL | SIF_PAGE | SIF_POS | SIF_RANGE;
	si.nMin = -1;
	si.nMax = m_nRows;
	si.nPage = m_nPageRows;
	si.nPos = m_nTopLine-1;
	VERIFY(SetScrollInfo(SB_VERT, &si, TRUE));
	Invalidate(FALSE);
}

void CHexEditView::SetHorzScrollBar()
{
	if((80 - ((UINT)m_nLeftChar) + 2) < m_nPageCols) 
		m_nLeftChar = 0;
	
	SCROLLINFO si;
	ZeroMemory(&si,sizeof(si));
	si.cbSize = sizeof(si);
	si.fMask = SIF_DISABLENOSCROLL | SIF_PAGE | SIF_POS | SIF_RANGE;
	si.nMin = 0;
	si.nMax = 80;
	si.nPage = m_nPageCols;
	si.nPos = m_nLeftChar;
	VERIFY(SetScrollInfo(SB_HORZ, &si, TRUE));
	Invalidate(FALSE);
}

//根据鼠标位置求鼠标当前指向的字符
UINT CHexEditView::PointPos(CPoint point)
{
	UINT line = m_nTopLine + point.y / m_nLineHeight;//鼠标所在的行
	if(line > m_nRows)
		line = m_nRows;
//	int liney = line*m_nLineHeight;//行纵坐标
	UINT charset;


	
	if(point.x < m_nHexStart)
		charset = 0;
	else if(point.x < m_nTextStart-m_nCharWidth)
		charset = (point.x-m_nHexStart)/(m_nCharWidth*3);
//	else if(point.x==m_nTextStart-m_nCharWidth)
//		charset = (point.x-m_nTextStart)/m_nCharWidth+1;
	else if(point.x < m_nTextStart + 16*m_nCharWidth)
		charset = (point.x-m_nTextStart)/m_nCharWidth;
	else
		charset = 15;

	//comSel = charset;
	//SelectPoint[0] = CPoint(m_nHexStart+charset*m_nCharWidth*3,liney);
	//SelectPoint[1] = CPoint(m_nTextStart+charset*m_nCharWidth,liney);

	return ((line * 16 + charset)>(UINT)m_nCharCount?(UINT)m_nCharCount-1:(line * 16 + charset));
}

//计算顶行
void CHexEditView::ChangeTop()
{
	int newtop = m_nTopLine;

	if(((int)m_nSelEnd/16 + 1) < m_nTopLine)
	{
		newtop = m_nSelEnd/16 + 1;
	}

	if((m_nSelEnd/16 + 2) > m_nTopLine+m_nPageRows)
	{
		newtop = m_nSelEnd/16 + 2 - m_nPageRows;
	}

	if(newtop != m_nTopLine)
	{
		m_nTopLine = newtop;
		SetVertScrollBar();
	}
}

//计算左列
void CHexEditView::ChangeLeft()
{
	int currentcol = m_nSelEnd%16;
	if(currentcol*3 + 14 < m_nLeftChar)
	{
		m_nLeftChar = currentcol*3 + 14;
		SetHorzScrollBar();
	}
	if(currentcol*3 + 14 - m_nLeftChar+1 >(int)m_nPageCols)
	{
		m_nLeftChar = currentcol*3 + 14 - m_nPageCols +2;
		SetHorzScrollBar();
	}
}
// CHexEditView 消息处理程序

void CHexEditView::OnSize(UINT nType, int cx, int cy)
{
	CView::OnSize(nType, cx, cy);

	// TODO: 在此处添加消息处理程序代码

	GetClientInfo();
	SetVertScrollBar();
	SetHorzScrollBar();
}