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  4. [NOT SOLVED] Unable to set font of the widget derived from QPlainTextEdit
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[NOT SOLVED] Unable to set font of the widget derived from QPlainTextEdit

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  • S Offline
    S Offline
    soroush
    wrote on last edited by
    #5

    bq. With the code, the font was changed and qDebug output is right. So you problem is the display text’s font doesn’t change?

    yes!

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    • C Offline
      C Offline
      Chuck Gao
      wrote on last edited by
      #6

      ok. I forget why this function can not change the font of your plainTextEdit, but there is still a way to make this happend, try style-sheet like this:
      @
      // this->setFont(QFont("Tahoma"));
      this->setStyleSheet(QString("font: bold italic large "Tahoma""));
      qDebug() << font(); // The output is not Tahoma, but the displaying text is.
      @

      We can check the document and find what's the differences. :-)

      Chuck

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      • S Offline
        S Offline
        soroush
        wrote on last edited by
        #7

        AFAIK this way I can't obtain current font. I would like to save which font is used and load it again from setting file.

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        • S Offline
          S Offline
          soroush
          wrote on last edited by
          #8

          So doesn't anybody know what's happening here?
          Should I give more details or codes ?

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          • S Offline
            S Offline
            soroush
            wrote on last edited by
            #9

            I'm still waiting....

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            • L Offline
              L Offline
              loladiro
              wrote on last edited by
              #10

              @document()->setDefaultFont(myFont);@
              The problem is that you set the font on the widget, but not the content.

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              • S Offline
                S Offline
                soroush
                wrote on last edited by
                #11

                Not works!
                @
                void LatexTextEdit::updateViewSetting()
                {
                document()->setDefaultFont((Configuration::instance()->displayFont));
                this->setFont((Configuration::instance()->displayFont));
                qDebug()<<"Widget Font:"<<font();
                qDebug()<<"Docement font:"<<document()->defaultFont();
                this->update();
                }
                @
                Output is:
                @
                Widget Font: QFont( "Tahoma,10,-1,5,50,0,0,0,0,0" )
                Docement font: QFont( "Tahoma,10,-1,5,50,0,0,0,0,0" )
                @
                But nothing happens. I tried with new documents too.

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                • L Offline
                  L Offline
                  loladiro
                  wrote on last edited by
                  #12

                  In that case I'll need to see the code where you insert the text into your widget. If you do it by hand, then it should be in the default font.

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                  • S Offline
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                    soroush
                    wrote on last edited by
                    #13

                    Ok, I call updateViewSetting in my ctor. This is the ctor:
                    @
                    LatexTextEdit::LatexTextEdit(QWidget *parent) :
                    QPlainTextEdit(parent)
                    {
                    createWidgets();
                    createConnections();
                    // setWordWrapMode(QTextOption::QTextOption::NoWrap);
                    highlighter = new srchiliteqt::Qt4SyntaxHighlighter(document());
                    highlighter->init(qApp->applicationDirPath()+"/latex.lang");
                    highlighter->setFormattingStyle(qApp->applicationDirPath()+"/latex.css");
                    updateViewSetting();
                    updateLineNumberAreaWidth();
                    // highlightCurrentLine();
                    }
                    @
                    and this is definition of class:
                    @
                    class LatexTextEdit : public QPlainTextEdit
                    {
                    Q_OBJECT
                    public:
                    explicit LatexTextEdit(QWidget *parent = 0);
                    // ....
                    void updateViewSetting();
                    // ...
                    private:
                    // void highlightCurrentLine();
                    QStringListModel *model;
                    QCompleter *completer;
                    bool completedAndSelected;
                    srchiliteqt::Qt4SyntaxHighlighter highlighter;
                    QWidget
                    lineNumberArea;
                    @

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                    • S Offline
                      S Offline
                      soroush
                      wrote on last edited by
                      #14

                      I have a guess... I used Qt4SyntaxHighlighter that reads a css file and applies highlighting on the content. I didn't set any font in that css file (just colors). Is this related to syntax highlighter ?

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