HTML in QTextView

**genick bar-meir** · 18th September 2007, 21:46

Hi,

I am sending a file to the QTextView with piece of HTML code (Table).
Sometimes the results are shown in HTML i.e. as in a web browser
and sometime the actual code "file" is shown.
Then if the code is resubmitted it is shown properly (by the user).
I don't want to make the user submit twice the results.
How can i force the QTextView to accept the code in HTML
and how can I make it accept the file as a plain text?

I have tried to send the tags <html> and </html>
and it does not have the effect on the code.

thank for any help,
genick

**wysota** · 19th September 2007, 10:37

Could you prepare a minimal compilable example reproducing the problem?

**genick bar-meir** · 19th September 2007, 15:17

Thanks for the help

The call for the dialog is make by this

Qt Code:

Switch view

class    ShowResults;
 
        if (!showResults){
                showResults = new ShowResults (this, "showResutls");
                connect(this, SIGNAL(newData(QString)),
         showResults, SLOT(newData(QString)));
   }
   showResults->show();
   showResults->raise();
   showResults->setActiveWindow();
   filename = workingFileName ;
   emit newData(workingFileName);

class    ShowResults;

        if (!showResults){
                showResults = new ShowResults (this, "showResutls");
                connect(this, SIGNAL(newData(QString)),
         showResults, SLOT(newData(QString)));
   }
   showResults->show();
   showResults->raise();
   showResults->setActiveWindow();
   filename = workingFileName ;
   emit newData(workingFileName);

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This the header file

Qt Code:

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#ifndef FINDDIALOG_H 
#define FINDDIALOG_H 
#include <qdialog.h> 
class   QCheckBox;
class   QLabel;
class   QLineEdit;
class   QPushButton;
class   QTextView;
class   QProcess;
 
class ShowResults : public QDialog {
        Q_OBJECT 
public:
        ShowResults(QWidget *parent = 0, const char *name = 0 );
        QString fileName;
signals:
 
public slots:
        void readFromStdout();
        void scrollToTop();
        void clearOutput();
        void newData(QString fileName);
 
private slots:
        void init();
 
private:
        QPushButton *closeButton; 
        QPushButton *clearButton; 
        QTextView *output;
        QProcess *proc;
        int curPosX;
};
 
#endif

#ifndef FINDDIALOG_H 
#define FINDDIALOG_H 
#include <qdialog.h> 
class   QCheckBox;
class   QLabel;
class   QLineEdit;
class   QPushButton;
class   QTextView;
class   QProcess;

class ShowResults : public QDialog {
        Q_OBJECT 
public:
        ShowResults(QWidget *parent = 0, const char *name = 0 );
        QString fileName;
signals:

public slots:
        void readFromStdout();
        void scrollToTop();
        void clearOutput();
        void newData(QString fileName);

private slots:
        void init();

private:
        QPushButton *closeButton; 
        QPushButton *clearButton; 
        QTextView *output;
        QProcess *proc;
        int curPosX;
};

#endif

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This the implementation

Qt Code:

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#include <qcheckbox.h>
#include <qlabel.h>
#include <qlayout.h>
#include <qlineedit.h>
#include <qpushbutton.h>
#include <qtextview.h>
#include <qprocess.h>
#include <qstring.h>
#include <qfile.h>
#include <qdir.h>
#include <qmessagebox.h>
 
#include "showResults.h"
 
ShowResults::ShowResults(QWidget *parent, const char *name)
//                      ,QString FileName ) 
        : QDialog(parent, name) 
{
        setGeometry( QRect( 400, 40, 660, 640 ) );
        setCaption(tr("Gas Dynamics Calculator: The Results"));
        output = new QTextView( this );
        output->setGeometry( QRect( 15, 10, 630, 550 ) );
 
        closeButton = new QPushButton(tr("Close Window"), this);
        closeButton->setGeometry( QRect( 200, 580, 100, 40 ) );
        connect(closeButton, SIGNAL(clicked()), this, SLOT(close()));
        clearButton = new QPushButton(tr("Clear Window"), this);
        clearButton->setGeometry( QRect( 340, 580, 100, 40 ) );
        connect(clearButton, SIGNAL(clicked()), this, SLOT(clearOutput()));
        init();
}
 
void ShowResults::init()
{
        proc = 0;
        output->setText("<html> </html>");
}
 
void ShowResults::readFromStdout()
{
        curPosX = output->contentsHeight() - 30 ;
        output->append( proc->readStdout() );
}
 
void ShowResults::clearOutput()
{
        output->setText("");
}
 
void ShowResults::scrollToTop()
{
        curPosX = output->contentsHeight()- 30;
        output->setContentsPos( curPosX, 0 );
}
 
void ShowResults::newData(QString FileName)
{
        if (!proc){
                proc = new QProcess( this );
                connect( proc, SIGNAL(readyReadStdout()), this, SLOT(readFromStdout()) );
                connect( proc, SIGNAL(processExited()), this, SLOT(scrollToTop()) );
                // the gd/gd program sent the html file below
                proc->setArguments( "./gd/gd" );
                proc->addArgument( FileName );
        }
        curPosX = output->contentsHeight();
        output->setContentsPos( curPosX, 0 );
        QString notice, notice1, caption;
                                                                                 output->setContentsPos( curPosX, 0 );
        if ( !proc->start() ) {
        QMessageBox::critical( 0,
                        tr("Fatal error"),
                        tr("Could not start the gd program."),
                        tr("Quit") );
        exit( -1 );
    }
}

#include <qcheckbox.h>
#include <qlabel.h>
#include <qlayout.h>
#include <qlineedit.h>
#include <qpushbutton.h>
#include <qtextview.h>
#include <qprocess.h>
#include <qstring.h>
#include <qfile.h>
#include <qdir.h>
#include <qmessagebox.h>

#include "showResults.h"

ShowResults::ShowResults(QWidget *parent, const char *name)
//                      ,QString FileName ) 
        : QDialog(parent, name) 
{
        setGeometry( QRect( 400, 40, 660, 640 ) );
        setCaption(tr("Gas Dynamics Calculator: The Results"));
        output = new QTextView( this );
        output->setGeometry( QRect( 15, 10, 630, 550 ) );

        closeButton = new QPushButton(tr("Close Window"), this);
        closeButton->setGeometry( QRect( 200, 580, 100, 40 ) );
        connect(closeButton, SIGNAL(clicked()), this, SLOT(close()));
        clearButton = new QPushButton(tr("Clear Window"), this);
        clearButton->setGeometry( QRect( 340, 580, 100, 40 ) );
        connect(clearButton, SIGNAL(clicked()), this, SLOT(clearOutput()));
        init();
}

void ShowResults::init()
{
        proc = 0;
        output->setText("<html> </html>");
}

void ShowResults::readFromStdout()
{
        curPosX = output->contentsHeight() - 30 ;
        output->append( proc->readStdout() );
}

void ShowResults::clearOutput()
{
        output->setText("");
}

void ShowResults::scrollToTop()
{
        curPosX = output->contentsHeight()- 30;
        output->setContentsPos( curPosX, 0 );
}

void ShowResults::newData(QString FileName)
{
        if (!proc){
                proc = new QProcess( this );
                connect( proc, SIGNAL(readyReadStdout()), this, SLOT(readFromStdout()) );
                connect( proc, SIGNAL(processExited()), this, SLOT(scrollToTop()) );
                // the gd/gd program sent the html file below
                proc->setArguments( "./gd/gd" );
                proc->addArgument( FileName );
        }
        curPosX = output->contentsHeight();
        output->setContentsPos( curPosX, 0 );
        QString notice, notice1, caption;
                                                                                 output->setContentsPos( curPosX, 0 );
        if ( !proc->start() ) {
        QMessageBox::critical( 0,
                        tr("Fatal error"),
                        tr("Could not start the gd program."),
                        tr("Quit") );
        exit( -1 );
    }
}

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This is the HTML code send to

html Code:

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<tr class="text"><td align="center">
<table border=1 width="100%" >
  <thead>
    <tr>
      <th align=left bgcolor="#fffeaa" colspan=2 >Normal Shock </th>
      <th align=left  bgcolor="#00ff5a" colspan=2 >Input: Mx </th>
      <th align=left  bgcolor="#9ae0ee" colspan=1 >k = 1.4 </th>
    </tr>
    <tr>
      <th align=center >Mx </th>
      <th align=center >My </th>
      <th align=center >Ty/Tx </th>
      <th align=center >&rho;y/&rho;x </th>
      <th align=center >Py/Px </th>
      <th align=center >P0y/P0x </th>
    </tr> 
  </thead>
  <tbody>
    <tr> 
      <td align=right > 1.5      </td>
      <td align=right > 0.701089      </td>
      <td align=right > 1.32022      </td>
      <td align=right > 1.86207      </td>
      <td align=right > 2.45833      </td>
      <td align=right > 0.929787      </td>
    </tr>
  </tbody>
</table>
</td>
</tr>

<tr class="text"><td align="center">
<table border=1 width="100%" >
  <thead>
    <tr>
      <th align=left bgcolor="#fffeaa" colspan=2 >Normal Shock </th>
      <th align=left  bgcolor="#00ff5a" colspan=2 >Input: Mx </th>
      <th align=left  bgcolor="#9ae0ee" colspan=1 >k = 1.4 </th>
    </tr>
    <tr>
      <th align=center >Mx </th>
      <th align=center >My </th>
      <th align=center >Ty/Tx </th>
      <th align=center >&rho;y/&rho;x </th>
      <th align=center >Py/Px </th>
      <th align=center >P0y/P0x </th>
    </tr> 
  </thead>
  <tbody>
    <tr> 
      <td align=right > 1.5      </td>
      <td align=right > 0.701089      </td>
      <td align=right > 1.32022      </td>
      <td align=right > 1.86207      </td>
      <td align=right > 2.45833      </td>
      <td align=right > 0.929787      </td>
    </tr>
  </tbody>
</table>
</td>
</tr>

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**wysota** · 19th September 2007, 15:59

Have you tried calling setFormat(Qt::RichText) on the text view? BTW. You should be using QTextBrowser or QTextEdit instead of QTextView...

**genick bar-meir** · 19th September 2007, 16:59

I have changed to QTextBrowser and it seems to solve the problem.

Thanks

genick
www.potto.org

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