使用CRichEditCtrl与正则实现XML高亮编辑器

最近与XML打交道比较多，为了便于XML格式内容在界面上的编辑，结合正则写了这个简单的XML高亮编辑器，因为是全文解析的，遇到大文件XML时，会慢一些。代码里所使用的正则库是deelx，也可以换成其他的正则库。

派生自CRichEditCtrl的类CKofXMLRichEditCtrl，代码如下：

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/**
* \file KofXMLRichEditCtrl.h
*
* \author 无幻
* \date 2012-3-28
*
* 简单的XML文件高亮编辑器类
*/

#pragma once

#include <tom.h>
#include <Richole.h>

#define XML_COLOR_TEXT RGB(0, 0, 0)
#define XML_COLOR_STRING RGB(163, 21, 21)
#define XML_COLOR_TAGS RGB(0, 0, 255)
#define XML_COLOR_COMMENT RGB(0, 128, 0)
#define XML_COLOR_BACKGROUND RGB(255, 255, 255)

class CKofXMLRichEditCtrl : public CRichEditCtrl
{
    DECLARE_DYNAMIC(CKofXMLRichEditCtrl)

public:
    CKofXMLRichEditCtrl();
    virtual ~CKofXMLRichEditCtrl();

protected:
    void InitXmlRichEdit();
    void ColorXml();
    DECLARE_MESSAGE_MAP()
    virtual void PreSubclassWindow();
    afx_msg void OnEnChange();

private:
    IRichEditOle *m_pRichEditOle;
    ITextDocument *m_pTextDocument;
};

实现文件如下：

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/**
* \file KofXMLRichEditCtrl.cpp
*
* \author 无幻
* \date 2012-3-28
*
* 简单的XML文件高亮编辑器类
*/

#include "stdafx.h"
#include "deelx.h"
#include "KofXMLRichEditCtrl.h"

IMPLEMENT_DYNAMIC(CKofXMLRichEditCtrl, CRichEditCtrl)

CKofXMLRichEditCtrl::CKofXMLRichEditCtrl()
{
    m_pRichEditOle = NULL;
    m_pTextDocument = NULL;
}

CKofXMLRichEditCtrl::~CKofXMLRichEditCtrl()
{
    if (m_pTextDocument)
    {
        m_pTextDocument->Release();
        m_pTextDocument = NULL;
    }
    if (m_pRichEditOle)
    {
        m_pRichEditOle->Release();
        m_pRichEditOle = NULL;
    }
}

BEGIN_MESSAGE_MAP(CKofXMLRichEditCtrl, CRichEditCtrl)
    ON_CONTROL_REFLECT(EN_CHANGE, &CKofXMLRichEditCtrl::OnEnChange)
END_MESSAGE_MAP()

void CKofXMLRichEditCtrl::PreSubclassWindow()
{
    m_pRichEditOle = GetIRichEditOle();
    if (m_pRichEditOle)
    {
        if (S_OK != m_pRichEditOle->QueryInterface(__uuidof(ITextDocument), (LPVOID*)&m_pTextDocument))
        {
            m_pTextDocument = NULL;
        }
    }
    InitXmlRichEdit();
    CRichEditCtrl::PreSubclassWindow();
}

void CKofXMLRichEditCtrl::InitXmlRichEdit()
{
    // 关闭自动字体切换
    SendMessage(EM_SETLANGOPTIONS, 0, 0);

    // 设置文本内容变化响应事件掩码
    SetEventMask(GetEventMask() | ENM_CHANGE);

    // 设置默认字体
    CHARFORMAT cf;
    ZeroMemory(&cf, sizeof(CHARFORMAT));
    cf.cbSize = sizeof(CHARFORMAT);
    cf.dwMask = CFM_FACE | CFM_CHARSET | CFM_COLOR;
    cf.bCharSet = ANSI_CHARSET;
    cf.dwEffects = 0;
    cf.crTextColor = XML_COLOR_TEXT;
    CFileFind fFind;
    if (fFind.FindFile(_T("C:\\WINDOWS\\Fonts\\CONSOLA.TTF")))
    {
        _tcscpy_s(cf.szFaceName, _T("Consolas"));
    }
    else
    {
        _tcscpy_s(cf.szFaceName, _T("Courier New"));
    }
    fFind.Close();
    SetDefaultCharFormat(cf);

    // 设置背景色
    SetBackgroundColor(FALSE, XML_COLOR_BACKGROUND);
}

void CKofXMLRichEditCtrl::ColorXml()
{
    CString strValue;
    GetWindowText(strValue);
    if (strValue.IsEmpty())
    {
        return;
    }

    //SetSel会把\r\n当成一个字符位
    strValue.Replace(_T("\r\n"), _T("\n"));

    //转成Unicode统一当成一个字符
    CStringW strValueW(strValue);

    CHARFORMAT cf;
    ZeroMemory(&cf, sizeof(CHARFORMAT));
    cf.cbSize = sizeof(CHARFORMAT);
    cf.dwMask = CFM_COLOR;
    cf.dwEffects = 0;

    CStringW strText;
    long lBegin, lEnd;
    int iHorzPos, iVertPos;

    GetSel(lBegin, lEnd);
    iHorzPos = GetScrollPos(SB_HORZ);
    iVertPos = GetScrollPos(SB_VERT);
    SetRedraw(FALSE);
    m_pTextDocument->Undo(tomSuspend, NULL);

    SetSel(0, -1);
    cf.crTextColor = XML_COLOR_TEXT;
    SetSelectionCharFormat(cf);
    static CRegexpT<wchar_t> regexpTags(L"<([^>]*)>");            //找寻<>标签
    static CRegexpT<wchar_t> regexpString(L"\"([^\"]*)\"");        //找寻""字符串
    static CRegexpT<wchar_t> regexpComment(L"");//找寻注释

    MatchResult resultTags = regexpTags.Match(strValueW);
    while (resultTags.IsMatched())
    {
        strText = strValueW.Mid(resultTags.GetStart(), resultTags.GetEnd() - resultTags.GetStart());
        SetSel(resultTags.GetStart(), resultTags.GetEnd());
        cf.crTextColor = XML_COLOR_TAGS;
        SetSelectionCharFormat(cf);

        MatchResult resultString = regexpString.Match(strText);
        while (resultString.IsMatched())
        {
            SetSel(resultTags.GetStart() + resultString.GetStart(),
                resultTags.GetStart() + resultString.GetEnd());
            cf.crTextColor = XML_COLOR_STRING;
            SetSelectionCharFormat(cf);
            resultString = regexpString.Match(strText,  resultString.GetEnd());
        }
        resultTags = regexpTags.Match(strValueW, resultTags.GetEnd());
    }
    MatchResult resultComment = regexpComment.Match(strValueW);
    while (resultComment.IsMatched())
    {
        SetSel(resultComment.GetStart(), resultComment.GetEnd());
        cf.crTextColor = XML_COLOR_COMMENT;
        SetSelectionCharFormat(cf);
        resultComment = regexpComment.Match(strValueW, resultComment.GetEnd());
    }

    SetSel(lBegin, lEnd);
    SendMessage(WM_HSCROLL, MAKELONG(SB_THUMBPOSITION, iHorzPos), 0);
    SendMessage(WM_VSCROLL, MAKELONG(SB_THUMBPOSITION, iVertPos), 0);
    SetRedraw(TRUE);
    RedrawWindow();
    m_pTextDocument->Undo(tomResume, NULL);
}

void CKofXMLRichEditCtrl::OnEnChange()
{
    if (m_pTextDocument)
    {
        ColorXml();
    }
}

步骤如下：
1.打开VC2008，新建基于对话框工程，名称：MyXmlViewer；
2.在对话框上放置一个RichEdit 2.0控件，ID号改为：IDC_RICHEDIT_XML，设置其Multiline属性、Horizontal Scroll属性、Vertical Scroll属性、Want Return属性；
3.在应用程序类实现文件，添加以下代码：

AfxInitRichEdit2();

4.包含"kofxmlricheditctrl.h"头文件，然后关联IDC_RICHEDIT_XML的变量即可，如下：

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#include "kofxmlricheditctrl.h"

class CMyXmlViewerDlg : public CDialog
{
    //...
public:
    CKofXMLRichEditCtrl m_RichEdit;
};

void CMyXmlViewerDlg::DoDataExchange(CDataExchange* pDX)
{
    CDialog::DoDataExchange(pDX);
    DDX_Control(pDX, IDC_RICHEDIT_XML, m_RichEdit);
}

5.效果如下所示：

http://blog.csdn.net/akof1314/article/details/7384294

posted @ 2012-03-02 22:56 findumars Views(760) Comments(0) Edit 收藏举报

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使用CRichEditCtrl与正则实现XML高亮编辑器

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