QT QTextEdit中超連結

最近要QTextEdit中 有超連結 功能， 在網上查了一下，沒找到滿意的，就自己寫了一個

這個代碼是根據部落格  http://blog.csdn.net/shizheng163/article/details/53312201    改造的。

感謝，感謝，這裡也将我寫的代碼分享給大家

#ifndef MYTEXTEDIT_H      

#define MYTEXTEDIT_H      

#include <QTextEdit>      

class myTextEdit : public QTextEdit      

{      

Q_OBJECT      

public:      

explicit myTextEdit(QWidget *parent = 0);      

QString GetlinkUrl(const QString &str);      

void SetTextContent(const QString &str);      

typedef struct urldata{      

int firstPos;      

int lastPos;      

QString url;      

}UrlData;      

signals:      

void openUrl(QString);      

public slots:      

protected:      

void mouseReleaseEvent(QMouseEvent *);      

private:      

QList<UrlData> m_list;      

};      

#endif // MYTEXTEDIT_H      

#include "mytextedit.h"      

#include <QDebug>      

#define LINK_RegulaString "((http[s]{0,1}|ftp)://[a-zA-Z0-9\\.\\-]+\\.([a-zA-Z]{2,4})(:\\d+)?(/[a-zA-Z0-9\\.\\[email protected]#$%^&*+?:_/=<>]*)?)|(www.[a-zA-Z0-9\\.\\-]+\\.([a-zA-Z]{2,4})(:\\d+)?(/[a-zA-Z0-9\\.\\[email protected]#$%^&*+?:_/=<>]*)?)"      

myTextEdit::myTextEdit(QWidget *parent) :      

QTextEdit(parent)      

{      

}      

void myTextEdit::SetTextContent(const QString &str)      

{      

m_list.clear();      

UrlData  data;      

QString content = str;      

QRegExp regexp(LINK_RegulaString);      

int pos = content.indexOf(regexp);      

while(pos>=0)      

{      

QString tmp1 = content.mid(0, pos);      

this->append(tmp1);      

int count1 = this->toPlainText().size();      

QString tmp2 = content.mid(pos, regexp.matchedLength());      

this->append(this->GetlinkUrl(tmp2));      

int count2 = this->toPlainText().size();      

//      

data.firstPos = count1;      

data.lastPos = count2;      

data.url = tmp2;      

m_list << data;      

//      

content = content.mid(pos+regexp.matchedLength());      

pos = content.indexOf(regexp);      

}      

this->append(content);      

}      

QString myTextEdit::GetlinkUrl(const QString &str)      

{      

return "<a href='"+str+"'>"+str+"</a>";      

}      

void myTextEdit::mouseReleaseEvent(QMouseEvent *event)      

{      

int index = this->textCursor().anchor();      

qDebug() << "index" <<  index;      

for(int i = 0; i< m_list.count(); i++)      

{      

if(index > m_list.at(i).firstPos && index <m_list.at(i).lastPos)      

{      

emit  openUrl(m_list.at(i).url);      

qDebug() << m_list.at(i).url;      

}      

}      

QTextEdit::mousePressEvent(event);      

}      

如果在富文本中有超連結，會破壞富文本

這裡可以更改 正規表達式

#define LINK_RegulaString "((http[s]{0,1}|ftp)://[a-zA-Z0-9\\.\\-]+\\.([a-zA-Z]{2,4})(:\\d+)?(/[a-zA-Z0-9\\.\\[email protected]#$%^&*+?:_/=<>]*)?)|(www.[a-zA-Z0-9\\.\\-]+\\.([a-zA-Z]{2,4})(:\\d+)?(/[a-zA-Z0-9\\.\\[email protected]#$%^&*+?:_/=<>]*)?)"